Abstract

An installation for crystallizing and drying granular polymer material with a low level of crystallinity includes: a crystallization hopper, in which the granular polymer material is maintained in an agitated state and is processed with a first gas flow which is heated to a first temperature; a heating hopper which is arranged downstream of the crystallization hopper and in which the crystallized granular polymer material is heated to a second temperature which is greater than the first temperature, a drying hopper which is arranged downstream of the heating hopper and in which a predefined level of pressure reduction is maintained to dry the granular polymer material, and a supply hopper which is arranged downstream of the drying hopper and which is provided to supply a transformation machine with the granular polymer material.

IPC Classes  ?

• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas

Abstract

A drying installation for granular polymer material includes a hopper, in which the granular polymer material is dried, and a supply circuit for a process gas which is provided to dry the granular polymer material. The drying installation also includes a turbofan which is able to rotate an impeller of the turbofan at a speed of at least 7000 rpm and which is provided to move the process gas along the supply circuit towards the hopper.

IPC Classes  ?

• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 21/12 - Velocity of flowQuantity of flow

Abstract

A gravimetric metering device which is provided to add an additive material to a polymer material, includes: a hopper to contain the additive material, a supply member to transport the additive material discharged from the hopper towards the polymer material, and first and a second weighing elements to detect the weight of the additive material discharged from the gravimetric metering device. A gravimetric metering device which is provided to add an additive material to a polymer material, includes: a hopper to contain the additive material, a supply member to transport the additive material discharged from the hopper towards the polymer material, and first and a second weighing elements to detect the weight of the additive material discharged from the gravimetric metering device. A control unit determines, on the basis of the weight detected by the first weighing element, the flow rate of additive material discharged from the gravimetric metering device by regulating the supply member and controls the operation of the first weighing element by means of the second weighing element by comparing, at the start and at the end of a cycle for charging the hopper with the additive material, the weight detected by the first weighing element with the weight detected by the second weighing element.

IPC Classes  ?

• G01G 13/24 - Weighing mechanism control arrangements for automatic feed or discharge
• B29B 7/60 - Component parts, details or accessoriesAuxiliary operations for feeding, e.g. end guides for the incoming material
• B29B 7/72 - Measuring, controlling or regulating
• B29B 7/88 - Adding charges

Abstract

A gravimetric metering device which is provided to add an additive material to a polymer material includes a hopper which to contain the additive material and a supply member which is provided downstream of the hopper in order to receive the additive material which is discharged from the hopper and to transport it towards a discharge opening which is connected to the polymer material, and a first and second weighing element which are provided to detect the weight of the additive material which is discharged from the gravimetric metering device. A gravimetric metering device which is provided to add an additive material to a polymer material includes a hopper which to contain the additive material and a supply member which is provided downstream of the hopper in order to receive the additive material which is discharged from the hopper and to transport it towards a discharge opening which is connected to the polymer material, and a first and second weighing element which are provided to detect the weight of the additive material which is discharged from the gravimetric metering device. The first weighing element is configured to detect a weight within a first maximum weighing range while the second weighing element is configured to detect a weight within a second maximum weighing range different from the first maximum weighing range.

IPC Classes  ?

• G01G 13/24 - Weighing mechanism control arrangements for automatic feed or discharge
• B29B 7/60 - Component parts, details or accessoriesAuxiliary operations for feeding, e.g. end guides for the incoming material
• B29B 7/72 - Measuring, controlling or regulating
• B29B 7/88 - Adding charges

Abstract

A drying plant (1) for granular polymer material based on polyethylene terephthalate (PET) comprises a hopper (2), which the granular polymer material is dried and a supply and recirculation circuit (10) for a process gas which is provided to dry the granular polymer material and comprising a catalysing group (25) which is configured to promote a decomposition reaction of contaminating substances which are present in the process gas and which are released from the granular polymer material in the hopper.

IPC Classes  ?

• F26B 3/04 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over, or surrounding, the materials or objects to be dried
• B01J 23/42 - Platinum
• F26B 21/02 - Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
• F26B 21/10 - TemperaturePressure

Abstract

Drying plant (1) for drying granular polymeric material, comprising: a hopper (2), in which the granular polymeric material is dried, and a supply and recirculation circuit (10) configured to supply a process gas to the hopper (2) in order to dry the granular polymeric material and to at least partially recover the process gas coming out of the hopper (2) in order to supply it again to the hopper (2). The supply and recirculation circuit (10) comprises: a first heating unit (40) configured to heat the process gas; a catalyst group (42) configured to promote a decomposition reaction of contaminating substances which are present in the process gas and released from the granular polymeric material in the hopper (2), a first bypass pipe (43) suitable for bypassing the catalyst group (42), and a first bypass valve (44) suitable for allowing the passage of a first percentage of the process gas into the first bypass pipe (43).

IPC Classes  ?

• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 3/16 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the materials or objects to be dried being moved by gravity in a counter-flow of the gas or vapour
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• F26B 21/04 - Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
• F26B 25/00 - Details of general application not covered by group or
• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying

Abstract

Plant (1) for drying granular polymer material, comprising: a hopper (2), in which the granular polymer material is dried, a supply and recirculation circuit (10), configured to supply a process gas to the hopper (2) in order to dry the granular polymer material and to at least partially recover the process gas coming out of the hopper (2) in order to supply it again to the hopper (2), a heating system, configured to heat the process gas and a control system. The control system is suitable for receiving input parameters related to the granular polymer material to be dried, these input parameters comprising at least a percentage of virgin material and a percentage of recycled material, from which to obtain a desired temperature of the process gas in the hopper (2), and a desired residence time of the granular polymer material in the hopper (2). The control system is suitable for automatically setting the plant (1) to a first configuration on the basis of the input parameters, controlling: the heating system to obtain the desired temperature and a filling level of the hopper (2) to obtain the desired residence time.

IPC Classes  ?

• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• F26B 23/02 - Heating arrangements using combustion heating
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• F26B 21/06 - Controlling, e.g. regulating, parameters of gas supply
• F26B 21/12 - Velocity of flowQuantity of flow
• F26B 21/10 - TemperaturePressure
• F26B 21/08 - Humidity
• F26B 25/00 - Details of general application not covered by group or

Abstract

A discharge valve (1) for slidable material, which is configured to extract from a pipe (10) at least a portion of the slidable material (100), comprises: - a body (2) which is intended to be fixed to the pipe (10) and which is provided with an inlet (2A) which is open inside the pipe (10), and an outlet (2B) which is open outside the pipe (10), - a closure member (3) which is received inside the body (2) and which comprises a channel (30) which extends as a through-channel between a first opening (3A) and a second opening (3B) which are formed in the closure member (3). The closure member (3) can be moved between an opening configuration (V1) of the valve (1), in which the channel (30) places in communication the inlet (2A) and the outlet (2B) in order to allow the slidable material to be discharged from the pipe (10), and a closing configuration (V2), in which the closure member (3) closes the inlet (2A) so as to prevent the introduction and the stagnation of the slidable material (100) in the body (2).

IPC Classes  ?

• F16K 3/08 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular closure plates rotatable around their centres
• B29C 48/255 - Flow control means, e.g. valves
• F16K 27/06 - Construction of housingsUse of materials therefor of taps or cocks
• B29C 48/285 - Feeding the extrusion material to the extruder
• B29C 45/18 - Feeding the material into the injection moulding apparatus

Abstract

A drying plant (1) for granular polymer material (2) comprises a drying hopper (10) for the granular polymer material (2), a supply device (3) which is provided to charge the fresh granular polymer material (2a) into the drying hopper (10), a heating circuit (20) which is provided to introduce into the drying hopper (10) a hot and dry gas flow and a recirculation line (14) for the granular polymer material (2), which is provided to take from the drying hopper (10) a portion of the granular polymer material (2) and to re-introduce it into the drying hopper (10).

IPC Classes  ?

• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• F26B 25/00 - Details of general application not covered by group or

Abstract

A plant for drying granular polymer material comprises a hopper, in which granular polymer material is dried, and a process gas circuit which is configured to supply a process gas to the hopper in order to dry the granular polymer material.

IPC Classes  ?

• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• F26B 17/12 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity
• F26B 21/08 - Humidity
• F26B 25/00 - Details of general application not covered by group or

Abstract

A process for drying granular polymeric material, includes: dehumidifying the granular polymeric material by a first flow of gas at a first temperature of between 100° C. and 150° C.; heating the dehumidified granular polymeric material to a second temperature, greater than the first temperature; drying the granular polymeric material heated to the second temperature, by applying a predefined vacuum level. The pressure-sealing elements include a filling unit, which includes a small tank blocked upstream and downstream by shut-off valves, as well as a discharge unit, which includes a small tank blocked upstream and downstream by respective shut-off valves.

IPC Classes  ?

• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• B29B 9/16 - Auxiliary treatment of granules
• B29B 13/08 - Conditioning or physical treatment of the material to be shaped by using wave energy or particle radiation
• F26B 3/08 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
• F26B 5/04 - Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas

Abstract

A drying installation (1) for granular polymer material comprises a hopper (2), in which the granular polymer material is dried, and a supply circuit for a process gas which is provided to dry the granular polymer material, and comprising a turbofan (16) which is able to rotate the impeller at a speed of at least 7000 rpm and which is provided to move the process gas along the supply circuit (10) towards the hopper (2).

IPC Classes  ?

• F26B 21/06 - Controlling, e.g. regulating, parameters of gas supply
• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying

Abstract

A drying installation (1) for granular polymer material comprises a hopper (2), in which the granular polymer material is dried, and a supply circuit for a process gas which is provided to dry the granular polymer material, and comprising a turbofan (16) which is able to rotate the impeller at a speed of at least 7000 rpm and which is provided to move the process gas along the supply circuit (10) towards the hopper (2).

IPC Classes  ?

• F26B 21/06 - Controlling, e.g. regulating, parameters of gas supply
• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying

Abstract

A gravimetric metering device (1) which is provided to add an additive material to a polymer material comprises a hopper (3) which can contain the additive material and a supply member (5) which is provided downstream of the hopper (3) in order to receive the additive material which is discharged from the hopper (3) and to transport it towards a discharge opening (9) which is connected to the polymer material, and a first and second weighing element (16, 17) which are provided to detect the weight of the additive material which is discharged from the gravimetric metering device (1). The first weighing element (16) is configured to detect a weight within a first maximum weighing range while the second weighing element (17) is configured to detect a weight within a second maximum weighing range different from the first maximum weighing range.

IPC Classes  ?

• G01F 13/00 - Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups
• B01F 35/88 - Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
• B29B 7/88 - Adding charges
• G01G 11/08 - Apparatus for weighing a continuous stream of material during flowConveyor-belt weighers having means for controlling the rate of feed or discharge
• G01G 13/16 - Means for automatically discharging weigh receptacles under control of the weighing mechanism
• G01G 13/24 - Weighing mechanism control arrangements for automatic feed or discharge
• G01G 19/32 - Weighing apparatus or methods adapted for special purposes not provided for in groups for apportioning materials by weighing prior to mixing them using two or more weighing apparatus
• G05D 7/06 - Control of flow characterised by the use of electric means

Abstract

A gravimetric metering device (1) which is provided to add an additive material to a polymer material, comprises: - a hopper (3) which can contain the additive material, - a supply member (5) which is provided to transport the additive material which is discharged from the hopper (3) towards the polymer material, and - a first and a second weighing element (16, 17) which are provided to detect the weight of the additive material discharged from the gravimetric metering device (1). A control unit (11) determines, on the basis of the weight detected by the first weighing element (16), the flow rate of additive material which is discharged from the gravimetric metering device (1) by consequently regulating the supply member (5) and controls the correct operation of the first weighing element (16) by means of the second weighing element (17) by comparing, at the start and at the end of a cycle for charging the hopper (3) with the additive material, the weight detected by the first weighing element (16) with the weight detected by the second weighing element (17).

IPC Classes  ?

• G01G 11/08 - Apparatus for weighing a continuous stream of material during flowConveyor-belt weighers having means for controlling the rate of feed or discharge
• B01F 35/88 - Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
• B29B 7/88 - Adding charges
• G01F 13/00 - Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups
• G01G 13/16 - Means for automatically discharging weigh receptacles under control of the weighing mechanism
• G01G 13/24 - Weighing mechanism control arrangements for automatic feed or discharge
• G01G 19/32 - Weighing apparatus or methods adapted for special purposes not provided for in groups for apportioning materials by weighing prior to mixing them using two or more weighing apparatus

Abstract

A gravimetric metering device (1) which is provided to add an additive material to a polymer material, comprises: - a hopper (3) which can contain the additive material, - a supply member (5) which is provided to transport the additive material which is discharged from the hopper (3) towards the polymer material, and - a first and a second weighing element (16, 17) which are provided to detect the weight of the additive material discharged from the gravimetric metering device (1). A control unit (11) determines, on the basis of the weight detected by the first weighing element (16), the flow rate of additive material which is discharged from the gravimetric metering device (1) by consequently regulating the supply member (5) and controls the correct operation of the first weighing element (16) by means of the second weighing element (17) by comparing, at the start and at the end of a cycle for charging the hopper (3) with the additive material, the weight detected by the first weighing element (16) with the weight detected by the second weighing element (17).

IPC Classes  ?

• G01G 11/08 - Apparatus for weighing a continuous stream of material during flowConveyor-belt weighers having means for controlling the rate of feed or discharge
• G01G 13/16 - Means for automatically discharging weigh receptacles under control of the weighing mechanism
• G01G 13/24 - Weighing mechanism control arrangements for automatic feed or discharge
• B29B 7/88 - Adding charges
• G01F 13/00 - Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups
• G01G 19/32 - Weighing apparatus or methods adapted for special purposes not provided for in groups for apportioning materials by weighing prior to mixing them using two or more weighing apparatus
• B01F 35/88 - Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise

Abstract

A gravimetric metering device (1) which is provided to add an additive material to a polymer material comprises a hopper (3) which can contain the additive material and a supply member (5) which is provided downstream of the hopper (3) in order to receive the additive material which is discharged from the hopper (3) and to transport it towards a discharge opening (9) which is connected to the polymer material, and a first and second weighing element (16, 17) which are provided to detect the weight of the additive material which is discharged from the gravimetric metering device (1). The first weighing element (16) is configured to detect a weight within a first maximum weighing range while the second weighing element (17) is configured to detect a weight within a second maximum weighing range different from the first maximum weighing range.

IPC Classes  ?

• G01F 13/00 - Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups
• B29B 7/88 - Adding charges
• G01G 11/08 - Apparatus for weighing a continuous stream of material during flowConveyor-belt weighers having means for controlling the rate of feed or discharge
• G01G 13/16 - Means for automatically discharging weigh receptacles under control of the weighing mechanism
• G01G 13/24 - Weighing mechanism control arrangements for automatic feed or discharge
• G01G 19/32 - Weighing apparatus or methods adapted for special purposes not provided for in groups for apportioning materials by weighing prior to mixing them using two or more weighing apparatus
• G05D 7/06 - Control of flow characterised by the use of electric means
• B01F 35/88 - Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise

Abstract

A drying plant (1) for granular polymer material based on polyethylene terephthalate (PET) comprises a hopper (2), in which the granular polymer material is dried and a supply and recirculation circuit (10) for a process gas which is provided to dry the granular polymer material and comprising a catalysing group (25) which is configured to promote a decomposition reaction of contaminating substances which are present in the process gas and which are released from the granular polymer material in the hopper.

IPC Classes  ?

• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• F26B 3/16 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the materials or objects to be dried being moved by gravity in a counter-flow of the gas or vapour
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• F26B 21/04 - Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
• F26B 25/00 - Details of general application not covered by group or

Abstract

A drying plant (1) for granular polymer material based on polyethylene terephthalate (PET) comprises a hopper (2), in which the granular polymer material is dried and a supply and recirculation circuit (10) for a process gas which is provided to dry the granular polymer material and comprising a catalysing group (25) which is configured to promote a decomposition reaction of contaminating substances which are present in the process gas and which are released from the granular polymer material in the hopper.

IPC Classes  ?

• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 3/16 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the materials or objects to be dried being moved by gravity in a counter-flow of the gas or vapour
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• F26B 21/04 - Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
• F26B 25/00 - Details of general application not covered by group or
• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying

Abstract

An installation (1) for crystallizing and drying granular polymer material with a low level of crystallinity comprises: - a crystallization hopper (10), in which the granular polymer material is maintained in an agitated state and is processed with a first gas flow which is heated to a first temperature; - a heating hopper (20) which is arranged downstream of the crystallization hopper (10) and in which the crystallized granular polymer material is heated to a second temperature which is greater than the first temperature, - a drying hopper (30) which is arranged downstream of the heating hopper (20) and in which a predefined level of pressure reduction is maintained to dry the granular polymer material, and - a supply hopper (40) which is arranged downstream of the drying hopper and which is provided to supply a transformation machine (100) with the granular polymer material.

IPC Classes  ?

• F26B 1/00 - Preliminary treatment of solid materials or objects to facilitate drying
• F26B 3/08 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
• F26B 5/04 - Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
• F26B 17/12 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas

Abstract

A gravimetric metering device (1) which is provided to form an admixture based on polymer material comprises a weighing unit (2), at least one first hopper and one second hopper (3; 4) which contain a first and a second material to be partially discharged into the weighing unit (2), respectively. The first hopper (3) is connected to the weighing unit (2) by means of a first valve (7) which is selectively able to be actuated so as to open and close to allow rapid discharge of the first material and by means of a first screw feeder (8), which can be selectively actuated to allow a controlled discharge of the first material.

IPC Classes  ?

• B29B 7/24 - Component parts, details or accessoriesAuxiliary operations for feeding
• B29B 7/60 - Component parts, details or accessoriesAuxiliary operations for feeding, e.g. end guides for the incoming material
• B01F 35/71 - Feed mechanisms
• B01F 35/88 - Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
• B29C 48/285 - Feeding the extrusion material to the extruder
• B65G 65/30 - Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
• G01F 11/00 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
• G01G 13/02 - Means for automatically loading weigh-pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism

Abstract

An installation (1) for crystallizing and drying granular polymer material with a low level of crystallinity comprises: - a crystallization hopper (10), in which the granular polymer material is maintained in an agitated state and is processed with a first gas flow which is heated to a first temperature; - a heating hopper (20) which is arranged downstream of the crystallization hopper (10) and in which the crystallized granular polymer material is heated to a second temperature which is greater than the first temperature, - a drying hopper (30) which is arranged downstream of the heating hopper (20) and in which a predefined level of pressure reduction is maintained to dry the granular polymer material, and - a supply hopper (40) which is arranged downstream of the drying hopper and which is provided to supply a transformation machine (100) with the granular polymer material.

IPC Classes  ?

• F26B 1/00 - Preliminary treatment of solid materials or objects to facilitate drying
• F26B 3/08 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
• F26B 5/04 - Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
• F26B 17/12 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas

Abstract

A plant for drying granular polymer material comprises a hopper, in which granular polymer material is dried, and a process gas circuit which is configured to supply a process gas to the hopper in order to dry the granular polymer material.

IPC Classes  ?

• F26B 17/12 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity
• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• F26B 21/08 - Humidity
• F26B 25/00 - Details of general application not covered by group or

Abstract

A plant for drying granular polymer material comprises a hopper, in which granular polymer material is dried, and a process gas circuit which is configured to supply a process gas to the hopper in order to dry the granular polymer material.

IPC Classes  ?

• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 17/12 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity
• F26B 21/08 - Humidity
• F26B 25/00 - Details of general application not covered by group or

Goods & Services

Machines for the storage, dosage, blending and transport of raw materials and goods; vending machines; granulators; conveyor belts; feeders for machines; hoppers; mixers for plastic materials and powders; aspirators for the suction of plastic materials. Dispensers (machines) for dosing the feeding of plastic materials; measuring apparatus; volumetric measuring apparatus; signalling and checking apparatus and instruments; sensors; process controlling software. Apparatus and equipment for drying, dehumidifiers; refrigerating apparatus; ventilating apparatus; apparatus for air filtering; filters for air filtering.

Goods & Services

Granulators; conveyor belts; pneumatic transporters; motors (except for land vehicles); feeders for machines; hoppers; transmission belts (except for land vehicles); mixers for plastic materials and powders; aspirators for the suction of plastic materials. Dispensers; measuring apparatus; volumetric measuring apparatus; signalling and checking apparatus and instruments; acoustic alarms; sensors; process controlling software; software interface. Apparatus and equipment for drying; dehumidifiers; refrigerating apparatus; ventilating apparatus; steam generating apparatus; apparatus for air filtering; filters for air filtering.

Abstract

A process for treating polymer granular material (2) comprising the steps of heating and drying the polymer granular material in a drying hopper (10) by means of a drying gas, discharging a portion of the polymer granular material into an extruder (101), inside which the polymer granular material is brought to a molten or semi-molten state and transported along the extruder by a rotating screw (104) in order to be injected into a mould (102) or caused to pass through an extrusion head. The process provides for measuring a control parameter which is correlated with the rotation of the screw inside the extruder and regulating the flow rate of the drying gas on the basis of the control parameter.

IPC Classes  ?

• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• B29B 9/16 - Auxiliary treatment of granules
• B29C 48/285 - Feeding the extrusion material to the extruder
• B29C 48/395 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
• B29C 48/793 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling upstream of the plasticising zone, e.g. heating in the hopper
• B29C 48/92 - Measuring, controlling or regulating
• B29C 35/02 - Heating or curing, e.g. crosslinking or vulcanising
• F26B 21/12 - Velocity of flowQuantity of flow

Abstract

A plastics material transformation plant (100) comprises a transformation machine (10) for the plastics material by means of moulding or extrusion, a feeding hopper (13) which is positioned upstream of the transformation machine and a metering device (1) which is arranged to add a liquid additive to the transformation machine. The metering device (1) comprises a container (4) in which the liquid additive is contained, a metering pump (5) which is connected to the container in order to take the liquid additive and to supply it to the transformation machine (10), and a thermo-regulation system of the liquid additive which is arranged to maintain the temperature of the liquid additive in a range of 2° C. more or 2° C. less than a predetermined temperature value.

IPC Classes  ?

• B29C 48/285 - Feeding the extrusion material to the extruder
• B29C 48/29 - Feeding the extrusion material to the extruder in liquid form
• B29C 48/793 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling upstream of the plasticising zone, e.g. heating in the hopper
• B29C 48/92 - Measuring, controlling or regulating

Goods & Services

Granulators being plastic processing machines; machinery used in the transformation processes of plastic materials, namely, conveyor belts, pneumatic transporters, motors except for land vehicles, feeders for machines, mechanical discharging hoppers, transmission belts except for land vehicles; industrial mixers for plastic materials and powders; plastic processing machines, namely, aspirators for the suction of plastic materials Dispensers being volumetric measuring apparatus for metering and dispensing materials for plastics extrusion; signalling and checking apparatus and instruments, namely, melt flow index testers for quality control of plastics; acoustic alarms; temperature sensors; downloadable software used in the transformation processes of plastic materials, namely, industrial process control software and graphical user interface software Drying apparatus for chemical processing; dehumidifiers; refrigerating machines; ventilating apparatus being ventilating fans for industrial purposes; steam generating apparatus; apparatus for air filtering; air filters for industrial installations

Goods & Services

Machines for the storage, dosage, blending and transport of raw materials and goods, namely, extrusion machines for plastic; vending machines; granulators being plastic processing machines; conveyor belts; feeders for machines; mechanical discharging hoppers; industrial mixers for plastic materials and powders; aspirators for the suction of plastic materials being plastic processing machines Dispensers for automatic dosing the feeding of plastic materials; measuring apparatus being scales; volumetric measuring apparatus; signalling and checking apparatus and instruments, namely, melt flow index testers for quality control of plastics; temperature sensors; downloadable industrial process control software Apparatus and equipment for drying, namely, drying apparatus for chemical processing; dehumidifiers; refrigerating machines; ventilating apparatus being ventilating fans for industrial purposes; apparatus for air filtering; air filters for industrial installations

Abstract

transferring the dried granular polymeric material to a feed hopper (40) provided upstream of a working machine (100).

IPC Classes  ?

• A45D 20/12 - Details thereof or accessories therefor, e.g. nozzles, stands
• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• B29B 9/16 - Auxiliary treatment of granules
• B29B 13/08 - Conditioning or physical treatment of the material to be shaped by using wave energy or particle radiation
• F26B 3/08 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
• F26B 5/04 - Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas

Goods & Services

Storage silos with metallic structures. Machines for storing, dosing, mixing and transporting raw materials and goods; Distribution machines, automatic; Atomizers; Belts for conveyors; Feeders for machines; Hoppers. Dosage dispensers; Mixers of plastics and powders; Measuring apparatus; Volumetric measuring apparatus; Signalling and checking apparatus and instruments; Sensors; Process controlling software. Extractor fans; Drying apparatus and installations; Dehumidifiers; Refrigerating apparatus; Air-conditioning apparatus; Filtration devices; Filters. Building construction, installation and repair services, In relation to the following goods: Installations, machines and equipment for storing, dosing, mixing and transporting raw materials and goods.

Goods & Services

Atomizers; Conveyor belts used in the transformation processes of plastic materials; pneumatic transporters used in the transformation processes of plastic materials; motors (except for land vehicles) used in the transformation processes of plastic materials; feeders for machines used in the transformation processes of plastic materials; hoppers used in the transformation processes of plastic materials; transmission belts (except for land vehicles) used in the transformation processes of plastic materials. Dosage dispensers; Mixers; Measuring apparatus; Volumetric measuring apparatus; Signalling and checking apparatus and instruments; Acoustic alarms; Sensors; Process controlling software for the transformation processes of plastic materials; interfaces for computers for the transformation processes of plastic materials. Extractor fans; Drying apparatus and installations; Dehumidifiers; Refrigerating apparatus; Air-conditioning apparatus; Steam generating apparatus; Filtration devices; Filters.

Goods & Services

Machines for storing, dosing, mixing and transporting raw materials and goods; Distribution machines, automatic; Atomizers; Belts for conveyors; Feeders for machines; Hoppers. Dosage dispensers; Mixers of plastics and powders; Measuring apparatus; Volumetric measuring apparatus; Signalling and checking apparatus and instruments; Sensors; Process controlling software. Extractor fans; Drying apparatus and installations; Dehumidifiers; Refrigerating apparatus; Air-conditioning apparatus; Filtration devices; Filters.

Abstract

A plant for drying granular polymeric material comprises: - at least two drying hoppers (10) for drying the granular polymeric material; - a circuit (2) for feeding a process gas, which circuit is connected to the drying hoppers, for introducing a flow of gas suitable for drying the granular polymeric material into each of the drying hoppers; - a plurality of units (20) for dehumidifying the process gas, which units are inserted in the feed circuit, wherein each dehumidification unit (20) is individually connected to a corresponding drying hopper (10); and - a movement unit (5) for moving the process gas along the feed circuit towards each of the drying hoppers.

IPC Classes  ?

• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 21/04 - Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• F26B 21/08 - Humidity

Abstract

A plant for drying granular polymeric material comprises: - a drying hopper (10) provided for containing the granular polymeric material during drying, - a loading hopper (13) provided for introducing the granular polymeric material to be dried into the drying hopper (10), - a drying system arranged for drying the granular polymeric material contained in the drying hopper, and - a weight sensor (15) provided for detecting the weight of the loading hopper (13) and the granular polymeric material contained therein. A control unit (50) determines, on the basis of the weight values detected by the weight sensor (15), the quantity of granular polymeric material introduced into the drying hopper (10) by the loading hopper (13) in a period of time, and controls at least one parameter of the drying system depending on the quantity of granular polymeric material introduced into the drying hopper (10) by the loading hopper (13) in such period of time.

IPC Classes  ?

• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 21/04 - Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• F26B 21/08 - Humidity
• F26B 21/12 - Velocity of flowQuantity of flow
• F26B 25/22 - Controlling the drying process in dependence on liquid content of solid materials or objects

Goods & Services

machines, namely mechanized feeders and hoppers to convey plastic materials; machines, namely, mixers for mixing plastics for use in industrial manufacturing; injection plastic molding machines and plastics working machine tools Electronic weighing and measuring apparatus, namely, volumetric metering devices for use in extrusion control and dispensing of master batches, additives, plastic granules, powder flakes, and regrind material; electronic automated batch weighing apparatus, namely, apparatus for electronically weighing and automatically and precisely metering or dispensing portions of master batches, additives, plastic granules; electronic gravimetric measuring devices for measuring the weight of material plastic components entering the production process and adjusting the flow of material based on the weight apparatus and instruments for dehumidifying, namely, dryers and dehumidifiers for drying plastic materials, refrigerating apparatus in the nature of refrigerators, drying apparatus for the removal of water vapor from compressed air and gases, air dehumidifiers

Abstract

a) and comparing it with a predefined inlet temperature of the fresh polymeric granular material, on the basis of which the predefined process gas flow rate has been calculated. If the measured inlet temperature is different from the predefined inlet temperature, the flow rate of the process gas is regulated on the basis of the measured inlet temperature.

IPC Classes  ?

• F26B 3/16 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the materials or objects to be dried being moved by gravity in a counter-flow of the gas or vapour
• B29C 48/92 - Measuring, controlling or regulating
• B29C 48/285 - Feeding the extrusion material to the extruder
• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• F26B 21/12 - Velocity of flowQuantity of flow
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas

Abstract

A process for treating polymer granular material (2) comprising the steps of heating and drying the polymer granular material in a drying hopper (10) by means of a drying gas, discharging a portion of the polymer granular material into an extruder (101), inside which the polymer granular material is brought to a molten or semi-molten state and transported along the extruder by a rotating screw (104) in order to be injected into a mould (102) or caused to pass through an extrusion head. The process provides for measuring a control parameter which is correlated with the rotation of the screw inside the extruder and regulating the flow rate of the drying gas on the basis of the control parameter.

IPC Classes  ?

• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• F26B 21/12 - Velocity of flowQuantity of flow

Abstract

A plastics material transformation plant (100) comprises a transformation machine (10) for the plastics material by means of moulding or extrusion, a feeding hopper (13) which is positioned upstream of the transformation machine and a metering device (1) which is arranged to add a liquid additive to the transformation machine. The metering device (1) comprises a container (4) in which the liquid additive is contained, a metering pump (5) which is connected to the container in order to take the liquid additive and to supply it to the transformation machine (10), and a thermo-regulation system of the liquid additive which is arranged to maintain the temperature of the liquid additive in a range of 2°C more or 2°C less than a predetermined temperature value.

IPC Classes  ?

• B29B 7/82 - Heating or cooling
• B29C 48/29 - Feeding the extrusion material to the extruder in liquid form
• B29B 7/28 - Component parts, details or accessoriesAuxiliary operations for measuring, controlling or regulating, e.g. viscosity control
• B29B 7/72 - Measuring, controlling or regulating
• B29B 7/94 - Liquid charges
• B29B 7/24 - Component parts, details or accessoriesAuxiliary operations for feeding
• B29B 7/60 - Component parts, details or accessoriesAuxiliary operations for feeding, e.g. end guides for the incoming material

Abstract

A process for treating polymer granular material (2) comprising the steps of heating and drying the polymer granular material in a drying hopper (10) by means of a drying gas, discharging a portion of the polymer granular material into an extruder (101), inside which the polymer granular material is brought to a molten or semi-molten state and transported along the extruder by a rotating screw (104) in order to be injected into a mould (102) or caused to pass through an extrusion head. The process provides for measuring a control parameter which is correlated with the rotation of the screw inside the extruder and regulating the flow rate of the drying gas on the basis of the control parameter.

IPC Classes  ?

• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• F26B 21/12 - Velocity of flowQuantity of flow

Abstract

A plastics material transformation plant (100) comprises a transformation machine (10) for the plastics material by means of moulding or extrusion, a feeding hopper (13) which is positioned upstream of the transformation machine and a metering device (1) which is arranged to add a liquid additive to the transformation machine. The metering device (1) comprises a container (4) in which the liquid additive is contained, a metering pump (5) which is connected to the container in order to take the liquid additive and to supply it to the transformation machine (10), and a thermo-regulation system of the liquid additive which is arranged to maintain the temperature of the liquid additive in a range of 2°C more or 2°C less than a predetermined temperature value.

IPC Classes  ?

• B29B 7/82 - Heating or cooling
• B29B 7/28 - Component parts, details or accessoriesAuxiliary operations for measuring, controlling or regulating, e.g. viscosity control
• B29B 7/72 - Measuring, controlling or regulating
• B29B 7/94 - Liquid charges
• B29C 48/29 - Feeding the extrusion material to the extruder in liquid form
• B29B 7/24 - Component parts, details or accessoriesAuxiliary operations for feeding
• B29B 7/60 - Component parts, details or accessoriesAuxiliary operations for feeding, e.g. end guides for the incoming material

Goods & Services

Feeders and hoppers, mixers; machines and machine tools. Weighing, measuring, signalling, checking (supervision) apparatus and instruments. Apparatus and instrument for humidifying and dehumidifying, apparatus for steam generating, refrigerating, drying, ventilating.

Goods & Services

Feeders and hoppers, mixers; machines and machine tools. Weighing, measuring, signalling, checking (supervision) apparatus and instruments. Apparatus and instrument for humidifying and dehumidifying, apparatus for steam generating, refrigerating, drying, ventilating.

Goods & Services

Mechanized feeders and hoppers, mixers for plastics; injection plastic molding machines and plastics working machine tools; all the aforesaid products not for land vehicles, parts and accessories thereof Weighing, measuring, signaling, checking (supervision) apparatus and instruments, namely, loss-in weight feeders with screw conveyors or vibrating channels, extrusion control, gravimetric blending machines, gravimetric blenders for controlling and measuring the weight of material components entering the production process, volumetric dosing units for use in automative dosing of master batches, additives, or plastic granules, powder, flakes, and regrind material; all the aforesaid products not for land vehicles, parts and accessories thereof Apparatus and instrument for humidifying and dehumidifying, apparatus for steam generating, refrigerating apparatus in the nature of refrigerators, drying apparatus for the removal of water vapor from compressed air and gases, ventilating apparatus for desiccant wheels, molecular sieves, vacuum dryers, refrigerant circuit, all for plastic industries, namely, hot air dryers for drying non-hygroscopic thermoplastic granular materials; all the aforesaid products not for land vehicles, parts and accessories thereof

Abstract

A process for drying polymeric granular material (2) comprises the steps of: - introducing into said drying hopper (10) a process gas having a predefined flow rate so as to heat and dry the polymeric granular material, - discharging a portion of the heated polymeric granular material into a transformation unit (100) for the polymeric material; - loading an amount of fresh polymeric granular material (2a) into the drying hopper. The process gas flow rate is regulated by measuring the inlet temperature of the fresh polymeric granular material (2a) and comparing it with a predefined inlet temperature of the fresh polymeric granular material, on the basis of which the predefined process gas flow rate has been calculated. If the measured inlet temperature is different from the predefined inlet temperature, the flow rate of the process gas is regulated on the basis of the measured inlet temperature.

IPC Classes  ?

• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• F26B 21/12 - Velocity of flowQuantity of flow

Abstract

A process for drying polymeric granular material (2) comprises the steps of: - introducing into said drying hopper (10) a process gas having a predefined flow rate so as to heat and dry the polymeric granular material, - discharging a portion of the heated polymeric granular material into a transformation unit (100) for the polymeric material; - loading an amount of fresh polymeric granular material (2a) into the drying hopper. The process gas flow rate is regulated by measuring the inlet temperature of the fresh polymeric granular material (2a) and comparing it with a predefined inlet temperature of the fresh polymeric granular material, on the basis of which the predefined process gas flow rate has been calculated. If the measured inlet temperature is different from the predefined inlet temperature, the flow rate of the process gas is regulated on the basis of the measured inlet temperature.

IPC Classes  ?

• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• F26B 21/12 - Velocity of flowQuantity of flow

Abstract

A process for drying granular polymeric material, comprising the steps of: dehumidifying the granular polymeric material by means of a first flow of gas at a first temperature of between 100°C and 150°C; heating the dehumidified granular polymeric material to a second temperature, greater than the first temperature; drying the granular polymeric material heated to the second temperature, by applying a predefined vacuum level; and transferring the dried granular polymeric material to a feed hopper (40) provided upstream of a working machine (100).

IPC Classes  ?

• F26B 3/08 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
• B29B 9/16 - Auxiliary treatment of granules
• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• F26B 5/04 - Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas

Abstract

A process for drying granular polymeric material, comprising the steps of: dehumidifying the granular polymeric material by means of a first flow of gas at a first temperature of between 100°C and 150°C; heating the dehumidified granular polymeric material to a second temperature, greater than the first temperature; drying the granular polymeric material heated to the second temperature, by applying a predefined vacuum level; and transferring the dried granular polymeric material to a feed hopper (40) provided upstream of a working machine (100).

IPC Classes  ?

• F26B 3/08 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
• B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
• F26B 5/04 - Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
• F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
• B29B 9/16 - Auxiliary treatment of granules

Goods & Services

Feeders and hoppers, mixers; machines and machine tools. Weighing, measuring, signalling, checking (supervision) apparatus and instruments. Apparatus and instrument for humidifying and dehumidifying, apparatus for steam generating, refrigerating, drying, ventilating.

Goods & Services

Mechanized feeders for plastic extrusion, injection molding, compounding and mechanical discharging hoppers; machines and machines tools for plastic conveying, storage and drying; industrial mixers for plastic and additives Weighing, measuring, signaling, checking, supervision apparatus and instruments namely for the dosing of plastic materials or powders Humidifiers and dehumidifiers, steam generators, refrigerators, industrial dryers for heating and dehumidifying, ventilators for cooling or heating or conveying of plastic materials or powders

Goods & Services

Machines and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles). Weighing, measuring, signalling, checking (supervision) apparatus and instruments. Apparatus for steam generating, refrigerating, drying, ventilating; apparatus and instrument for humidifying and dehumidifying.