The present invention relates to a mould (10) for producing footwear (1) by means of direct injection onto the upper (2) of a sole (3), comprising a tread (5) and a midsole (4), wherein the midsole (4) is composed of a first layer (6) and a second layer (7). The mould (10) comprises a base (12), a pair of first half-rings (14), a pair of second half-rings (16), a first cover (18), a second cover (20) and a mould last (22). In accordance with the invention the mould (10) comprises gripping means (24) designed to fix selectively the first half-rings (14) to the base (12) or to the second half-rings (16). The present invention also relates to a method for producing footwear (1) using said mould (10).
B29D 35/08 - Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts
Plastics moulding machines; Plastics injection molding machines; machines, in relation to the following fields: Production of footwear; Moulds [parts of machines]; Moulds for moulding plastics products [parts of machines]; Moulds for die-casting [parts of machines]; Moulds for forging metal products [parts of machines]; Chill moulds [machine parts]; Embossing machines; Handling machines, automatic [manipulators]; Industrial robots.
The present invention relates to a method for the production of plastic footwear (10; 100) of the “full plastic” type by means of moulding using a polyurethane mixture (M; P). The method comprises the steps of: —providing a mould (20) having a mould cavity (22) defined by at least two impressions (28, 30) and designed to receive a shoe last (24) so as to define, when the mould (20) is closed, an interspace (26) having the shape and dimensions of the plastic footwear (10; 100) to be produced; —spraying a polyurethane mixture (M, P) onto said at least two impressions (28, 30) of the mould cavity (22); —inserting the shoe last (24) inside said mould cavity (22); —closing the mould cavity (22) so that the sprayed polyurethane mixture (M, P) occupies said interspace (26); —opening the mould (20), once at least the demoulding time (td) for the sprayed polyurethane mixture (M, P) has lapsed, such that the sprayed polyurethane mixture (M, P) has solidified inside the interspace (26) forming said plastic footwear (10, 100); —extracting the shoe last (24) from the mould cavity (22); —removing the plastic footwear (10, 100) from the shoe last (24).
B29C 41/20 - Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped articleApparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. moulding around inserts or for coating articles
B29C 43/18 - Compression moulding, i.e. applying external pressure to flow the moulding materialApparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
A mould for producing footwear by direct injection onto an upper of a sole, including a tread and a midsole, wherein the midsole is composed of a first layer and a second layer. The mould includes a base, a pair of first half-rings, a lid, a pair of second half-rings and a mould last. The first half-rings are designed to be arranged close together such that they abut against the base and against the lid, so as to form a first mould cavity for moulding the first layer (6) of the midsole. While the first half-rings are abutting against the base, the second half-rings are designed to be arranged close together, such that they lie over the half-rings and abut against the upper, fitted onto the mould last, so as to form a second mould cavity for moulding the second layer of the midsole. The first half-rings are provided with guiding means so that they can be moved away from and towards each other and rotate about an axis of rotation. Also a method for producing footwear by direct injection onto an upper, which may be performed by means of the mould.
B29L 31/50 - Footwear, e.g. shoes or parts thereof
B29D 35/06 - Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
B29D 35/08 - Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts
The present invention relates to a mould (10) for producing footwear (1) by means of direct injection onto the upper (2) of a sole (3), comprising a tread (5) and a midsole (4), wherein the midsole (4) is composed of a first layer (6) and a second layer (7). The mould (10) comprises a base (12), a pair of first half-rings (14), a pair of second half-rings (16), a first cover (18), a second cover (20) and a mould last (22). In accordance with the invention the mould (10) comprises gripping means (24) designed to fix selectively the first half-rings (14) to the base (12) or to the second half-rings (16). The present invention also relates to a method for producing footwear (1) using said mould (10).
B29D 35/08 - Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts
B29D 35/12 - Producing parts thereof, e.g. soles, heels or uppers, by a moulding technique
The present invention relates to a mould (10) for producing footwear (1) by direct injection onto an upper (2) of a sole (3), comprising a tread (5) and a midsole (4), wherein the midsole (4) is composed of a first layer (6) and a second layer (7). The mould (10) comprises a base (12), a pair of first half-rings (16), a lid (18), a pair of second half-rings (20) and a mould last (22). The first half-rings (16) are designed to be arranged close together such that they abut against the base (12) and against the lid (18), so as to form a first mould cavity for moulding the first layer (6) of the midsole (4). While the first half-rings (16) are abutting against the base (12), the second half-rings (20) are designed to be arranged close together, such that they lie over the half-rings (16) and abut against the upper (2), fitted onto the mould last (22), so as to form a second mould cavity for moulding the second layer (7) of the midsole (4). In accordance with the invention the first half-rings (16) are provided with guiding means (24) so that they can be moved away from and towards each other and rotate about an axis of rotation (C). The invention also relates to a method for producing footwear by direct injection onto an upper, which may be performed by means of the mould according to the invention.
B29D 35/06 - Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
B29D 35/08 - Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts
B29D 35/10 - Producing footwear having preformed soles or heels joined on to preformed uppers using a moulding technique, e.g. by feeding or injecting plastics material between the parts to be joined
A43B 13/12 - Soles with several layers of different materials
The present invention relates to a method for the production of plastic footwear (10; 100) of the "full plastic" type by means of moulding using a polyurethane mixture (M; P). The method comprises the steps of: - providing a mould (20) having a mould cavity (22) defined by at least two impressions (28, 30) and designed to receive a shoe last (24) so as to define, when the mould (20) is closed, an interspace (26) having the shape and dimensions of the plastic footwear (10; 100) to be produced; - spraying a polyurethane mixture (M, P) onto said at least two impressions (28, 30) of the mould cavity (22); - inserting the shoe last (24) inside said mould cavity (22); - closing the mould cavity (22) so that the sprayed polyurethane mixture (M, P) occupies said interspace (26); - opening the mould (20), once at least the demoulding time (td) for the sprayed polyurethane mixture (M, P) has lapsed, such that the sprayed polyurethane mixture (M, P) has solidified inside the interspace (26) forming said plastic footwear (10, 100); - extracting the shoe last (24) from the mould cavity (22); - removing the plastic footwear (10, 100) from the shoe last (24).
B29C 41/08 - Coating a former, core or other substrate by spraying or fluidisation, e.g. spraying powder
B29C 43/18 - Compression moulding, i.e. applying external pressure to flow the moulding materialApparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
B29D 35/02 - Producing footwear made in one piece using a moulding technique, e.g. by injection moulding or casting
B29D 35/04 - Producing footwear made in one piece using a moulding technique, e.g. by injection moulding or casting having multilayered parts
B29K 75/00 - Use of polyureas or polyurethanes as moulding material
8.
SPRAYING DEVICE OF MIXTURES OBTAINED FROM THE REACTION OF POLYMER MATERIALS
The present invention relates to a spraying device 20 for mixtures obtained from the reaction of polymer materials. The spraying device 20 comprises: a casing 22, which encloses at least one mixing chamber 24 and which is provided at one of its ends with a nozzle 26; a mixer 28, which extends at least partially inside the mixing chamber 24 along a longitudinal axis X of the mixing chamber 24 and which is designed to rotate about said longitudinal axis X. The mixer 28 is intended to mix together at least two reactive polymer components introduced inside the mixing chamber 24 so as to obtain a polymer mixture which is designed to be sprayed through the nozzle 26 in the form of a spray cone Z. In accordance with the invention the mixer 28 is provided with an appendix 30 which protrudes, at least partially, from the casing 22 through the nozzle 26. The appendix 30 is provided with a deviation surface 32, on the outside of the nozzle 26, which is inclined at an angle of deviation a relative to the longitudinal axis X and which is intended to intercept and deviate at least a first portion K of the spray cone Z sprayed through the nozzle 26.
B29B 7/42 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
B05B 1/26 - Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectorsBreaking-up the discharged liquid or other fluent material by impinging jets
B05B 7/04 - Spray pistolsApparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
The present invention relates to a method for the production of a shoe (1) by means of direct injection, onto the upper (2), of a sole (3) made of polymer material comprising a midsole (5) and a tread (4) which covers a bottom surface of the midsole (5) and which, in at least one zone thereof, is in direct contact with the upper (2). The method comprises the step of providing a mould cavity (22), designed to receive the shoe part (1) to be covered with the sole (3) and comprising a base (12) having an impression (16) intended to form the outer surface of the tread (4). The method also comprises a step of spraying a first polymer mixture M onto the impression (16) in order to form the tread (4). Moreover, the method comprises the step of closing the mould cavity (22) around the shoe (1) so that the base (12) with the previously sprayed tread (4) is positioned relative to the upper (2) with the space for the midsole (5) and with the said zone of the tread (4) placed in direct contact with the upper (2). Finally, the method comprises the step of injecting a second polymer mixture S inside said mould cavity (22) after closing with the base (12), so as to form the midsole (5) in the said space for the midsole. The present invention also relates to a mould which can be used with this method.
B29D 35/08 - Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts
The present invention relates to a mould-holder station (10) for a machine for moulding polymer material by casting or injection inside a mould (14) mounted in the mould- holder station (10), the mould (14) comprising at least a base (15) and two side rings (16), The mould-holder station (10) comprises at least one mould-holder block (11) for fixing the two side rings (16) of the mould (14), and an actuating unit (12) for moving the support plate (17) for the base (15) of the mould (14); the actuating unit (12) being arranged underneath the mould-holder block (11); In accordance with the invention the mould-holder station (10) is characterized in that a collection element (20) is removably provided in a space defined by a bottom surface (31) of the mould-holder block (11) and by a top surface (32) of the actuating unit (12), said collection element being separate from and independent of the mould-holder block (11) and suitable for collecting any machining waste and/or release agent sprayed outside of the mould (14) mounted in the mould-holder station (10).
a and the associated insert 40; trimming the portion S of the polymer mixture M which, following the spraying and pressing steps, has flowed outside the external perimeter of the impression mould 16. Finally, the invention relates to a mould 10 which can be used to implement this method and the articles 20 which may be obtained by means of this method.
B29C 43/20 - Making multilayered or multicoloured articles
B29C 43/02 - Compression moulding, i.e. applying external pressure to flow the moulding materialApparatus therefor of articles of definite length, i.e. discrete articles
B29C 43/18 - Compression moulding, i.e. applying external pressure to flow the moulding materialApparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
Method for applying an insert 40 of polymer material onto a support layer 30, 30a, comprising the following steps: providing a mould 10 comprising at least one base 12 and at least one cover 18; the base 12 and the cover 18 being suitable for defining with the facing surfaces 13, 17, when the mould 10 is closed, a mould impression 16 which is delimited perimetrally by a closing edge 14; spraying a polymer mixture M in the fluid state onto one of the two facing surfaces 13, 17 of the mould 10; introducing the support layer 30, 30a between base 12 and cover 18 of the mould 10 so that, when the mould 10 is closed, the support layer 30, 30a projects from the closing edge 14; pressing the cover 18 of the mould 10 onto the base 12; opening the mould 10 in order to remove the support layer 30, 30a and the associated insert 40; trimming the portion S of the polymer mixture M which, following the spraying and pressing steps, has flowed outside the external perimeter of the impression mould 16. Finally, the invention relates to a mould 10 which can be used to implement this method and the articles 20 which may be obtained by means of this method.
B29C 43/02 - Compression moulding, i.e. applying external pressure to flow the moulding materialApparatus therefor of articles of definite length, i.e. discrete articles
B29C 43/18 - Compression moulding, i.e. applying external pressure to flow the moulding materialApparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
B29D 35/08 - Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts
A method and a device for producing a thin article or a thin coating on a previously manufactured solid body. At least two reactive polymer materials are mixed together thoroughly and die resultant mixture is discharged via a nozzle in the form of a thin tube. This thin tube is pulverized or atomized by means of the introduction of a controlled flow of pressurized air with the result that die pulverized mixture may be sprayed onto an open mold or onto a surface or onto a previously manufactured solid body which is to be coated.
B05B 1/28 - Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with integral means for shielding the discharged liquid or other fluent material, e.g. to limit area of sprayNozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with integral means for catching drips or collecting surplus liquid or other fluent material
B29B 7/42 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
B29C 41/36 - Feeding the material on to the mould, core or other substrate
B29B 7/80 - Component parts, details or accessoriesAuxiliary operations
B29B 7/74 - MixingKneading using other mixers or combinations of dissimilar mixers
B05B 7/06 - Spray pistolsApparatus for discharge with one outlet orifice surrounding another approximately in the same plane
B05B 7/04 - Spray pistolsApparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
14.
METHOD FOR THE PRODUCTION OF BREATHABLE WATERPROOF SHOES
Method for the production of an impermeable and breathable semi-finished article (11) which, together with an outsole (20), subsequently forms a shoe (10), comprising the following steps: forming an assembled piece (14) by means of assembly of a breathable upper (15) with an impermeable and breathable membrane (17) and a breathable lining (19); forming a semi-finished article (11) by means of mounting of the assembled piece (14) on an insole (16) so that the outer edge of the membrane (17) projects from the edge of the upper; and spraying the bottom part of the semi-finished article (11) with a mixture comprising a reactive polymer material.
The invention relates to a method and a device for producing a thin article or a thin coating on a previously manufactured solid body. At least two reactive polymer materials (A, B) are mixed together thoroughly and die resultant mixture (M) is discharged via a nozzle (216) in the form of a thin tube (250). This thin tube is pulverized or atomized by means of the introduction of a controlled flow of pressurized air with the result that die pulverized mixture (Z) may be sprayed onto an open mould (300) or onto a surface (350) or onto a previously manufactured solid body which is to be coated.
B05B 7/04 - Spray pistolsApparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
B05B 7/06 - Spray pistolsApparatus for discharge with one outlet orifice surrounding another approximately in the same plane
B29B 7/74 - MixingKneading using other mixers or combinations of dissimilar mixers
B29B 7/42 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
B29C 41/08 - Coating a former, core or other substrate by spraying or fluidisation, e.g. spraying powder
17 - Rubber and plastic; packing and insulating materials
25 - Clothing; footwear; headgear
28 - Games; toys; sports equipment
Goods & Services
Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal. Clothing, footwear, headgear. Games and playthings; gymnastic and sporting articles not included in other classes; decorations for Christmas trees.
17.
METHOD OF MAKING A FOOTWEAR BY INJECTION/CASTING OF A MONO-OR MULTI-LAYERED SOLE OF SYNTHETIC MATERIAL DIRECTING ONTO THE UPPER
Method for the production, by means of injection/casting directly onto an upper (32), of a shoe formed at least by one sole part (50; 79) and an upper (32), where the former overlaps in an overlapping area (53) the toe (40) and/or the heel of the latter. The upper (32) is enclosed inside a first mould (36) which grips it at the edges leaving at least one zone (39) of the toe (40) and/or the heel thereof exposed and which defines a first cavity (49; 81) where the sole is formed. A second mould (46; 72) in the form of a single-piece block comprising a second cavity (48, 74a, 74b) is coupled to the first mould (36) so as to form the first cavity (49; 81) and so as to introduce the exposed zone (39) of the upper (32) into the second cavity (48, 74a, 74b). A mould and a machine as well as the shoes which may be made with them are also claimed.
B29D 35/08 - Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts
