A moulded polymer article having a monolithic wall part composed of a polymer, the monolithic wall part having a core layer of expanded cellular foam, composed of the polymer, disposed between, and integral with, first and second solid skins, composed of the polymer, wherein the core layer is multilaminar and includes a first layer of the expanded cellular foam adjacent to the first solid skin, a second layer of the expanded cellular foam adjacent to the second solid skin, and an intermediate layer of the expanded cellular foam which is between, and adjacent to, the first and second layers, wherein the first and second layers have a first cellular microstructure of closed cells and the intermediate layer has a second cellular microstructure of cells which have an average aspect ratio between a maximum cell dimension and a minimum cell dimension which is greater than 2:1 and less than 5:1 and wherein in the second cellular microstructure the maximum cell dimension of the cells is oriented in a direction extending between the first and second solid skins.
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
B29C 44/08 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles using several expanding steps
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
B29K 23/00 - Use of polyalkenes as moulding material
B29K 105/04 - Condition, form or state of moulded material cellular or porous
An intermediate article for assembly to form a container, the intermediate article having a base which is polygonal in plan and having an annular peripheral edge with a plurality of edge portions surrounding a base wall structure, a plurality of wall elements around the base, each wall element being adjacent to a respective edge portion of the polygonal base, wherein each wall element has a pair of opposite outwardly extending edges having a sidewall structure therebetween, each outwardly extending edge comprising at least one member of a respective fixing mechanism for affixing adjacent outwardly extending edges of adjacent wall elements, wherein the sidewall and the base are composed of an injection moulded thermoplastic polymer, and a flexible sheet having a central part which is bonded to the base wall structure and a plurality of extending parts, each extending part being connected to, and extending away from, the central part, each extending part being bonded to the sidewall structure of a respective wall element, wherein each extending part is connected to the central part by a respective hinge part of the flexible sheet, whereby each wall element is hingedly connected to the base by the respective hinge part, wherein the wall elements can be hinged upwardly relative to the base to form a container having a sidewall which is polygonal in plan and defines a central concavity for packaging a product, wherein the sidewall has the plurality of wall elements which are connected in series to form an endless wall member extending upwardly from the base, each outwardly extending edge being affixed to an adjacent outwardly extending edge of an adjacent wall element by a respective fixing mechanism at a respective corner portion of the sidewall.
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
B65D 1/42 - Reinforcing or strengthening parts or members
B65D 5/20 - Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
B65D 65/46 - Applications of disintegrable, dissolvable or edible materials
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
A container having an annular sidewall with upper and lower annular peripheral edges and a lattice structure of elongate ribs interconnecting the upper and lower annular peripheral edges, wherein the lattice structure is an open framework defining a plurality of sidewall openings, and a base having an annular peripheral edge which is integral with the lower annular peripheral edge of the sidewall, the annular peripheral edge of the base surrounding a base wall structure which is integral therewith, the base wall structure having at least one injection moulding sprue at a central region of the base wall structure, wherein the at least one injection moulding sprue is connected to the upper annular peripheral edge of the annular sidewall by the base wall structure, the annular peripheral edge of the base, the lower annular peripheral edge of the sidewall and the lattice structure of the sidewall, wherein the sidewall and the base are composed of a thermoplastic polymer and define a central concavity for packaging a product, and wherein the container further has a flexible sheet which is bonded to the lattice structure to cover the sidewall openings and form a sealed sidewall surface of the container.
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
B65D 1/42 - Reinforcing or strengthening parts or members
B65D 5/20 - Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
Moulds for injection moulding tools; moulding machines;
shaping and moulding machines; injection moulding machines;
plastics moulding machines; injection plastic molding
machines; moulds for moulding plastics products [parts of
machines]; injection moulds; plastics injection forming
machines; machines tools; machines and machine tools for
treatment of materials; parts and fittings for the aforesaid
goods. Surgical, medical, dental and veterinary apparatus and
instruments; medical specimen cups; menstrual cups; needle
holders for surgical use; containers especially made for
medical waste; containers especially adapted for the
disposal of medical instruments, syringes and other
contaminated waste; receptacles for medical purposes; spoons
for administering medicine; parts and fittings for the
aforesaid goods. Containers, not of metal, for storage or transport; plastic
lids for cans; plastic caps; pots of plastic for packaging;
plastic crates; plastic tubs; plastic boxes; egg containers
[packaging] of plastic; stacking trays of plastic;
containers of plastic (packaging -); packaging containers of
plastic; egg cartons [packaging] of plastic; plastic trays
[containers] used in food packaging; portable boxes
[containers] of plastic; receptacles of plastic for
packaging; container closures of plastic; plastic medication
containers; container closures of plastic; carrying
containers (non-metallic); transport containers
(non-metallic); bottle caps, not of metal; bottle closures,
not of metal / bottle fasteners, not of metal; boxes of wood
or plastic; closures, not of metal, for containers; crates;
loading pallets, not of metal; recycling bins, not of metal;
transport pallets, not of metal; trays, not of metal; waste
dumpsters, not of metal, other than for medical use; parts
and fittings for the aforesaid goods. Household or kitchen utensils and containers; cookware and
tableware, except forks, knives and spoons; plastic cups;
cups; plastic bottles; plastic plates; mugs; plastic water
bottles; plastic buckets; cup lids; plastic bowls [basins];
plastic bowls [household containers]; planters of plastic;
plastic funnels; fruit cups; plastic lids for plant pots;
plastic ice cube moulds; plastic containers for dispensing
drink to pets; insulated mugs; insulated flasks; heat
insulated containers; thermally insulated containers for
food; beverages (heat insulated containers for -); heat
insulated containers for drinks; thermally insulated flasks
for household use; heat insulated containers for food;
thermal insulated wrap for cans to keep the contents cold or
hot; foldable insulated food covers; insulated food cover
domes; insulated containers for beverage cans, for domestic
use; insulated lids for plates and dishes; baby baths,
portable; basins [receptacles]; baskets for household
purposes; bottles; bowls [basins] / basins [bowls]; buckets
/ pails; chamber pots; cups of paper or plastic; diaper
disposal pails / nappy disposal bins; dish covers / covers
for dishes; dishes; disposable table plates; drinking
bottles for sports; drinking glasses; drinking vessels;
dustbins for household purposes / garbage cans for household
purposes / refuse bins for household purposes / trash cans
for household purposes; flasks; flower pots; flower-pot
covers, not of paper / covers, not of paper, for flower
pots; ice buckets / coolers [ice pails] / ice pails; litter
boxes for pets / litter trays for pets; lunch boxes; mop
wringer buckets; pet feeding bowls; pot lids; pots; salad
bowls; scoops for household purposes; serving forks; serving
ladles; serving spoons; soup bowls; soup tureens; spatulas
for kitchen use; table plates; tableware, other than knives,
forks and spoons; trays for household purposes; utensils for
household purposes; vegetable dishes; washtubs; waste paper
baskets; parts and fittings for the aforesaid goods. Treatment of foam materials, treatment or moulding of
synthetic products; custom manufacture and assembly
services, except for the manufacture of microencapsulated
capsules; contract moulding services; material treatment
information; providing information relating to the
processing of plastics; treatment of plastic materials to
produce plastic mouldings; polymerization, except for the
manufacture of microencapsulated capsules; treatment and
processing of plastics; treatment and processing of
plastics; consultancy and advisory services relating to the
aforegoing services.
A moulded polymer article comprising a monolithic wall part composed of a polymer, the monolithic wall part comprising a core layer of expanded cellular foam, composed of the polymer, disposed between, and integral with, first and second solid skins, composed of the polymer, wherein the core layer is multilaminar and comprises a first layer of the expanded cellular foam adjacent to the first solid skin, a second layer of the expanded cellular foam adjacent to the second solid skin, and an intermediate layer of the expanded cellular foam which is between, and adjacent to, the first and second layers, wherein the first and second layers comprise a first cellular microstructure comprising closed cells and the intermediate layer comprises a second cellular microstructure comprising cells which have an average aspect ratio between a maximum cell dimension and a minimum cell dimension which is greater than 2:1 and less than 5:1 and wherein in the second cellular microstructure the maximum cell dimension of the cells is oriented in a direction extending between the first and second solid skins.
B29C 44/08 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles using several expanding steps
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
Injection plastic molding machines; moulds, being parts of machines, for moulding plastics products, namely, moulds for use in the manufacture of drinking cups, insulated drinking cups, storage containers, transport containers, caps, pots, crates, tubs, boxes, egg containers, stacking trays, packaging containers, egg cartons, food packaging trays, packaging receptacles, container closures, medication containers, bottle caps, bottle closures, bottle fasteners, recycling bins, and waste dumpsters Plastic caps; egg containers for packaging being plastic egg cartons for commercial packaging use; egg cartons packaging of plastic being plastic egg cartons for commercial packaging use; plastic tray containers used in food packaging being plastic containers and covers for the food industry; plastic medication containers for commercial use; bottle caps, not of metal; bottle closures, not of metal; bottle fasteners, not of metal; crates; recycling bins, not of metal, for commercial use; trays, not of metal, being plastic trays for foodstuff packaging; waste dumpsters, not of metal, other than for medical use; all of the foregoing goods being for use in the food service industry Plastic cups; cups; reusable plastic water bottles sold empty; plastic plates; plastic buckets; cup lids; plastic bowls in the nature of plastic basins; household containers being plastic bowls; planters of plastic being planter boxes for domestic gardening; insulated flasks; heat-insulated containers for household use; thermally insulated containers for food; heat insulated containers for beverages; heat insulated containers for drinks; thermally insulated flasks for household use; heat insulated containers for food; thermal insulated wrap for cans to keep the contents cold or hot; insulated lids for plates and dishes; buckets and pails; cups of paper and plastic; drinking glasses; drinking vessels; dustbins for household purposes; garbage cans for household purposes; refuse bins for household purposes; trash cans for household purposes; flasks; flower pots; ice buckets; non-electric portable coolers being ice pails; ice pails; lunch boxes; pots; salad bowls; soup bowls; soup tureens; table plates; tableware, other than knives, forks and spoons, being dinnerware; trays for household purposes Custom manufacture and assembly of plastic drinking cups, insulated drinking cups, storage containers, transport containers, caps, pots, crates, tubs, boxes, egg containers, stacking trays, packaging containers, egg cartons, food packaging trays, packaging receptacles, container closures, medication containers, bottle caps, bottle closures, bottle fasteners, recycling bins, and waste dumpsters; contract moulding services being injection molding of plastic for others; treatment of plastic materials to produce plastic mouldings being moulding of plastic materials; chemical treatment and processing of plastics; consultancy and advisory services relating to the aforesaid services
A tray having: an annular sidewall having upper and lower annular peripheral edges, an upper annular peripheral rim which is integral with the upper annular peripheral edge, and a base having an annular peripheral edge which is integral with the lower annular peripheral edge of the sidewall, wherein the rim, the sidewall and the base are composed of a thermoplastic polymer and the sidewall and the base define a central concavity for packaging a product, wherein the base has a lattice structure of elongate foam ribs interconnected by foam junctions, wherein each foam rib has opposite ends, and each end is integrally connected to either the annular peripheral edge of the base or one of the foam junctions, wherein each foam rib and each foam junction has opposed upper and lower unfoamed solid skins of the thermoplastic polymer on opposite sides of a central cellular foam core of the thermoplastic polymer.
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
B65D 1/42 - Reinforcing or strengthening parts or members
B65D 5/20 - Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
A method of forming an article by controlling the thickness of a portion of the plastic composition which comprises a layer of molten plastic composition between opposite first and second solid skins, so that the thickness is constant with a very low tolerance of +/−0.5%, preferably +/−0.2%, when the portion is subsequently exposed to a reduced pressure to cause expansion of the layer of molten plastic composition to form a core layer of expanded cellular foam between the first and second solid skins, and by controlling the stretch of the first solid skin to be within the range of 0.5 to 3%, the expansion of the plastic composition can be highly uniformly controlled in the expanded wall parts.
B29C 44/02 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
B29K 23/00 - Use of polyalkenes as moulding material
A tray (2) comprising: an annular sidewall (4) having upper and lower annular peripheral edges (6,8), an upper annular peripheral rim (10) which is integral with the upper annular peripheral edge, and a base (12) which comprises an annular peripheral edge (14) which is integral with the lower annular peripheral edge (8) of the sidewall (4), wherein the rim (10), the sidewall (4) and the base (12) are composed of a thermoplastic polymer and the sidewall and the base define a central concavity (16) for packaging a product, wherein the base comprises a lattice structure (20) of elongate foam ribs (22) interconnected by foam junctions (24a, 24b), wherein each foam rib has opposite ends, and each end is integrally connected to either the annular peripheral edge (14) of the base or one of the foam junctions (24a, 24b), wherein each foam rib and each foam junction comprise opposed upper and lower unfoamed solid skins of the thermoplastic polymer on opposite sides of a central cellular foam core of the thermoplastic polymer.
B65D 1/42 - Reinforcing or strengthening parts or members
B65D 81/26 - Adaptations for preventing deterioration or decay of contentsApplications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, fluids, e.g. exuded by contentsApplications of corrosion inhibitors or desiccators
B29C 44/02 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles
B29C 44/08 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles using several expanding steps
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
A container (202) comprising an annular sidewall (204) which comprises upper and lower annular peripheral edges and a lattice structure (213) of elongate ribs (214) interconnecting the upper and lower annular peripheral edges, wherein the lattice structure is an open framework defining a plurality of sidewall openings (225), and a base (210) which comprises an annular peripheral edge which is integral with the lower annular peripheral edge of the sidewall, the annular peripheral edge of the base surrounding a base wall structure which is integral therewith, the base wall structure comprising at least one injection moulding sprue at a central region of the base wall structure, wherein the at least one injection moulding sprue is connected to the upper annular peripheral edge of the annular sidewall by the base wall structure, the annular peripheral edge of the base, the lower annular peripheral edge of the sidewall and the lattice structure of the sidewall, wherein the sidewall and the base are composed of a thermoplastic polymer and define a central concavity for packaging a product, and wherein the container further comprises a flexible sheet (250) which is bonded to the lattice structure to cover the sidewall openings and form a sealed sidewall surface of the container.
B65D 1/42 - Reinforcing or strengthening parts or members
B65D 81/26 - Adaptations for preventing deterioration or decay of contentsApplications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, fluids, e.g. exuded by contentsApplications of corrosion inhibitors or desiccators
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
B29C 44/08 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles using several expanding steps
B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
An intermediate article (100) for assembly to form a container (2), the intermediate article comprising a base (10) which is polygonal in plan and comprises an annular peripheral edge (12) comprising a plurality of edge portions (5) surrounding a base wall structure (11), a plurality of wall elements (16) around the base, each wall element being adjacent to a respective edge portion of the polygonal base, wherein each wall element has a pair of opposite outwardly extending edges (27) having a sidewall structure therebetween (29), each outwardly extending edge comprising at least one member of a respective fixing mechanism (31) for affixing adjacent outwardly extending edges of adjacent wall elements, wherein the sidewall and the base are composed of an injection moulded thermoplastic polymer, and a flexible sheet (50) which comprises a central part (66) which is bonded to the base wall structure and a plurality of extending parts (68), each extending part being connected to, and extending away from, the central part, each extending part being bonded to the sidewall structure of a respective wall element, wherein each extending part is connected to the central part by a respective hinge part of the flexible sheet, whereby each wall element is hingedly connected to the base by the respective hinge part, wherein the wall elements can be hinged upwardly relative to the base to form a container having a sidewall which is polygonal in plan and defines a central concavity for packaging a product, wherein the sidewall comprises the plurality of wall elements which are connected in series to form an endless wall member extending upwardly from the base, each outwardly extending edge being affixed to an adjacent outwardly extending edge of an adjacent wall element by a respective fixing mechanism at a respective corner portion of the sidewall.
B65D 5/20 - Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
B65D 1/42 - Reinforcing or strengthening parts or members
B65D 81/26 - Adaptations for preventing deterioration or decay of contentsApplications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, fluids, e.g. exuded by contentsApplications of corrosion inhibitors or desiccators
B29C 44/02 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles
B29C 44/08 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles using several expanding steps
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B65D 6/18 - Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal, plastics, wood or substitutes therefor collapsible with hinged components
B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
Method of forming an article from a molten plastic composition including a polymer and a blowing agent. The method provides that during an injecting step (c) and a packing step (d), the injection pressure and the packing pressure, respectively, are maintained above a minimum pressure threshold in at least one second region of the cavity to maintain the physical blowing agent as a gas dissolved in the polymer so that substantially no gas bubbles are formed in the at least one second region, during a mould opening step (e), at least some of the molten plastic composition is exposed to an external pressure lower than a minimum pressure threshold to form in the article at least one first portion having expanded cellular foam formed from the plastic composition, and prior to the opening step (e), the plastic composition in the at least one second region of the cavity has been cooled so as to be fully solidified to form in the article at least one second portion having a substantially homogeneous, solid phase, unexpanded plastic composition.
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
B29C 44/02 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
A method of forming an article, the method comprising: (a) providing a mould having a first mould part and a second mould part, the first and second mould parts having respective first and second cavity-forming surfaces; (b) closing the mould thereby defining a cavity between the first and second cavity-forming surfaces; (c) injecting a molten plastic composition comprising a polymer and a physical blowing agent into the cavity, wherein during or after the injecting step (c), the injected plastic composition in contact with the first and second cavity- forming surfaces is cooled to form first and second solid skins respectively adjacent to and in contact with the first and second cavity-forming surfaces, whereby in at least one region of the cavity is respectively located at least one portion of the plastic composition in which portion at least some of the plastic composition between the first and second solid skins remains molten, wherein the thickness of the respective portion is constant within a tolerance of +/- 0.5%, preferably +/- 0.2%, based on a nominal thickness of the respective portion; (d) opening the mould before the molten plastic composition between the first and second solid skins has solidified in the at least one portion, so as to expose the molten plastic composition of the respective portion to an external pressure lower than the injection pressure thereby allowing the molten plastic composition between the first and second solid skins of the respective portion to expand by foaming to form an expanded cellular foam as a result of the molten plastic composition beneath the first solid skin expanding outwardly away from the second solid skin which stretches the first solid skin in the respective portion, wherein the opening step comprises removing the first mould part so that the first solid skin is no longer in contact with the first cavity-forming surface; and (e) cooling the expanded cellular foam to cause the molten plastic composition between the first and second solid skins of the respective portion to solidify and to form in the article at least one first part comprising a core layer of cellular foam between the first and second solid skins, wherein after the cooling step (e) the length of the first solid skin in the respective portion has stretched, as compared to the first solid skin present prior to the opening step (d), by a stretch ratio of from 0.5 to up to 3%, wherein the stretch ratio is the ratio of the increase in the length of the first solid skin after cooling step (e) based on length of the first solid skin before the opening step (d).
B29C 44/02 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
B29C 44/08 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles using several expanding steps
Methods of forming an article from a molten plastic composition comprising a polymer and a blowing agent. The methods include injecting the molten plastic composition into a mould, allowing the plastic composition to form a first solid skin adjacent to an in contact with a first cavity-forming surface of the mould and a second solid skin adjacent to and in contact with a second cavity-forming surface of the mould, and then opening the mould before the molten plastic composition between the first and second solid skins in at least one portion of the circumference of a region of the mould cavity defining an annular cross-section of the cavity has solidified.
B65D 81/38 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
B60J 10/18 - Sealing arrangements characterised by the material provided with reinforcements or inserts
B60J 10/21 - Sealing arrangements characterised by the shape having corner parts or bends
B60J 10/34 - Sealing arrangements characterised by the fastening means using adhesives
B60J 10/70 - Sealing arrangements specially adapted for windows or windscreens
B29C 44/14 - Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
B29K 105/04 - Condition, form or state of moulded material cellular or porous
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
B29K 23/00 - Use of polyalkenes as moulding material
B29K 623/00 - Use of polyalkenes for preformed parts, e.g. for inserts
A hollow article for use as a beverage cup, or as a container, the hollow article having an annular sidewall and a base wall defining a central hollow cavity, a top rim of the sidewall and a bottom end of the sidewall, wherein the annular sidewall has a plastics material composed of a sandwich structure of inner and outer skins and an integral expanded cellular foam layer therebetween, wherein at least a portion of the annular sidewall has an inner surface of the sandwich structure inclined at a first acute angle to a longitudinal axis of the hollow article and an opposite outer surface of the sandwich structure inclined at a second acute angle to the longitudinal axis of the hollow article, wherein the second acute angle is greater than the first acute angle.
B65D 81/38 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
B65D 21/02 - Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
The present invention provides a method of forming an article (100) from a molten plastic composition comprising a polymer and a blowing agent. The method provides that during an injecting step (c) and a packing step (d), the injection pressure and the packing pressure, respectively, are maintained above a minimum pressure threshold in at least one second region (32) of the cavity (8) to maintain the physical blowing agent as a gas dissolved in the polymer so that substantially no gas bubbles are formed in the at least one second region, during a mould opening step (e), at least some of the molten plastic composition is exposed to an external pressure lower than a minimum pressure threshold to form in the article at least one first portion comprising expanded cellular foam formed from the plastic composition, and prior to the opening step (e), the plastic composition in the at least one second region of the cavity has been cooled so as to be fully solidified to form in the article at least one second portion comprising a substantially homogeneous, solid phase, unexpanded plastic composition
B29C 44/02 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
Surgical, medical, dental and veterinary apparatus and
instruments; medical specimen cups; menstrual cups; needle
holders for surgical use; containers especially made for
medical waste; containers especially adapted for the
disposal of medical instruments, syringes and other
contaminated waste; receptacles for medical purposes. Paper lids; paper and cardboard; printed matter; bookbinding
material; photographs; stationery and office requisites,
except furniture; adhesives for stationery or household
purposes; drawing materials and materials for artists;
paintbrushes; instructional and teaching materials; plastic
sheets, films and bags for wrapping and packaging; printers'
type, printing blocks. Unprocessed and semi-processed rubber, gutta-percha, gum,
asbestos, mica and substitutes for all these materials;
plastics and resins in extruded form for use in manufacture;
packing, stopping and insulating materials; foam for use in
manufacture; plastic foam materials for use in manufacture;
polyurethane foam for use in manufacture; semi-processed
foamed plastics; foam in the form of blocks and sheets for
use in manufacture; foamed plastics in blocks or sheets or
panels for use in manufacture; semi-processed flexible
foamed plastics; flexible foamed plastics for insulation;
foam cuts; foamed plastics in extruded form for use in
manufacture; high resistance foam slabs; semi-processed
synthetic resin for foam mouldings; semi-processed foam;
rigid foam materials for use in manufacture; laminated
plastic materials for use in manufacture; laminates
containing foams; plastic laminate sheets; composite
plastics materials for use in manufacture; foam for use in
composite materials; polyamide foams, polyurethane foam
[semi-finished]; silicone foam heat shielding; silicone foam
thermal insulation; moulded foam for packing; packing foam
in sheet form; foam for use as heat insulation; insulating
materials made of foam. Paper cups; cups; mugs; compostable cups; biodegradable
cups; reusable cups; drinking cups; coffee cups; plastic
cups; double wall cups; paper baking cups; biodegradable
paper pulp-based cups; insulating sleeve holders for
beverage cups; plastic lids; plastic plates; paper plates;
disposable tableware (paper), coasters not of paper or table
linen, napkin dispensers; metal paper towel dispensers;
household or kitchen utensils or containers; glasses;
drinking vessels, barware; glass pots; serving pots;
reusable containers; containers for food or beverages; glass
containers; drinks containers; thermally insulated
containers for food or beverages; heat retaining containers
for food or beverages; containers adapted to dispense paper
goods, and parts and fittings therefor. Treatment of foam materials, treatment or moulding of
synthetic products; custom manufacture and assembly
services, except for the manufacture of microencapsulated
capsules; contract moulding services; material treatment
information; providing information relating to the
processing of plastics; treatment of plastic materials to
produce plastic mouldings; polymerization, except for the
manufacture of microencapsulated capsules; treatment and
processing of plastics; joining of components using
adhesives; extruding of plastics, except for the manufacture
of microencapsulated capsules; processing of rubber;
processing of plastics.
Methods of forming an article from a molten plastic composition comprising a polymer and a blowing agent. The methods include injecting the molten plastic composition into a mould, allowing the plastic composition to form a first solid skin adjacent to an in contact with a first cavity-forming surface of the mould and a second solid skin adjacent to and in contact with a second cavity-forming surface of the mould, and then opening the mould before the molten plastic composition between the first and second solid skins in at least one portion of the circumference of a region of the mould cavity defining an annular cross-section of the cavity has solidified.
B65D 81/38 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
B60J 10/18 - Sealing arrangements characterised by the material provided with reinforcements or inserts
B60J 10/21 - Sealing arrangements characterised by the shape having corner parts or bends
B60J 10/34 - Sealing arrangements characterised by the fastening means using adhesives
B60J 10/70 - Sealing arrangements specially adapted for windows or windscreens
B29C 44/14 - Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
B29K 105/04 - Condition, form or state of moulded material cellular or porous
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
B29K 23/00 - Use of polyalkenes as moulding material
B29K 623/00 - Use of polyalkenes for preformed parts, e.g. for inserts
The present invention provides a hollow article for use as a beverage cup, or as a container, the hollow article having an annular sidewall and a base wall defining a central hollow cavity, a top rim of the sidewall and a bottom end of the sidewall, wherein the annular sidewall comprises a plastics material composed of a sandwich structure of inner and outer skins and an integral expanded cellular foam layer therebetween, wherein at least a portion of the annular sidewall has an inner surface of the sandwich structure inclined at a first acute angle to a longitudinal axis of the hollow article and an opposite outer surface of the sandwich structure inclined at a second acute angle to the longitudinal axis of the hollow article, wherein the second acute angle is greater than the first acute angle.
B65D 81/38 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
Goods & Services
Surgical apparatus and instruments for medical, dental, or veterinary use; medical specimen cups; menstrual cups; surgical instruments and apparatus, namely, needle holders for surgical use; containers especially made for medical waste; containers especially adapted for the disposal of medical instruments, syringes and other contaminated waste; receptacles for medical purposes, namely, containers for medical waste Paper cups; cups; mugs; compostable cups; biodegradable cups; reusable cups; drinking cups; coffee cups; plastic cups; double wall cups; paper baking cups; biodegradable paper pulp-based cups; insulating sleeve holders for beverage cups; plastic lids; plastic plates; paper plates; disposable tableware, namely, plates, bowls, and cups; coasters not of paper or textile; napkin dispensers for household use; household or kitchen utensils, namely, cooking spoons and spatulas; household or kitchen containers; drinking glasses; drinking vessels; barware, namely, cocktail shakers; glass pots; serving pots; reusable household or kitchen containers; household or kitchen containers for food or beverages; glass containers for kitchen or household use; drinks containers, namely, insulated containers for beverages; thermally insulated containers for food or beverages; heat retaining containers for food or beverages, namely, insulated containers for food or beverages; napkin dispensers for household use and replacement parts therefor
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
Surgical, medical, dental and veterinary apparatus and instruments; medical specimen cups; menstrual cups; needle holders for surgical use; containers especially made for medical waste; containers especially adapted for the disposal of medical instruments, syringes and other contaminated waste; receptacles for medical purposes. Paper lids; Paper and cardboard; Printed matter; Bookbinding material; Photographs; Stationery and office requisites, except furniture; Adhesives for stationery or household purposes; Drawing materials and materials for artists; Paintbrushes; Instructional and teaching materials; Plastic sheets, films and bags for wrapping and packaging; Printers' type, printing blocks. Unprocessed and semi-processed rubber, gutta-percha, gum, asbestos, mica and substitutes for all these materials; plastics and resins in extruded form for use in manufacture; packing, stopping and insulating materials; foam for use in manufacture; plastic foam materials for use in manufacture; polyurethane foam for use in manufacture; semi-processed foamed plastics; foam in the form of blocks and sheets for use in manufacture; foamed plastics in blocks or sheets or panels for use in manufacture; semi-processed flexible foamed plastics; flexible foamed plastics for insulation; foam cuts; foamed plastics in extruded form for use in manufacture; high resistance foam slabs; semi-processed synthetic resin for foam mouldings; semi-processed foam; rigid foam materials for use in manufacture; laminated plastic materials for use in manufacture; laminates containing foams; plastic laminate sheets; composite plastics materials for use in manufacture; foam for use in composite materials; polyamide foams, polyurethane foam [semi-finished]; silicone foam heat shielding; silicone foam thermal insulation; moulded foam for packing; packing foam in sheet form; foam for use as heat insulation; insulating materials made of foam. Paper cups; cups; mugs; compostable cups; biodegradable cups; reusable cups; drinking cups; coffee cups; plastic cups; double wall cups; paper baking cups; biodegradable paper pulp-based cups; insulating sleeve holders for beverage cups; plastic lids; plastic plates; paper plates; disposable tableware (paper), coasters not of paper or table linen, napkin dispensers; dispensing paper towels (metal boxes for -); household or kitchen utensils or containers; glasses; drinking vessels, barware; glass pots; serving pots; reusable containers; containers for food or beverages; glass containers; drinks containers; thermally insulated containers for food or beverages; heat retaining containers for food or beverages; containers adapted to dispense paper goods, and parts and fittings therefor. Treatment of foam materials, treatment or moulding of synthetic products; custom manufacture and assembly services, except for the manufacture of microencapsulated capsules; contract moulding services; material treatment information; providing information relating to the processing of plastics; treatment of plastic materials to produce plastic mouldings; polymerization, except for the manufacture of microencapsulated capsules; treatment and processing of plastics; joining of components using adhesives; extruding of plastics, except for the manufacture of microencapsulated capsules; processing of rubber; processing of plastics.
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
Goods & Services
Paper cups; cups; mugs; compostable cups; biodegradable cups; reusable cups; drinking cups; coffee cups; plastic cups; double wall cups; paper baking cups; biodegradable paper pulp-based cups; insulating sleeve holders for beverage cups; plastic lids; plastic plates; paper plates; disposable tableware (paper), coasters not of paper or table linen, napkin dispensers; metal paper towel dispensers; household or kitchen utensils or containers; containers adapted to dispense paper goods, and parts and fittings therefor.
The present invention provides methods of forming an article from a molten plastic composition comprising a polymer and a blowing agent. The methods include injecting the molten plastic composition into a mould, allowing the plastic composition to form a first solid skin adjacent to an in contact with a first cavity-forming surface of the mould and a second solid skin adjacent to and in contact with a second cavity-forming surface of the mould, and then opening the mould before the molten plastic composition between the first and second solid skins in at least one portion of the circumference of a region of the mould cavity defining an annular cross-section of the cavity has solidified.
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
B65D 1/26 - Thin-walled containers, e.g. formed by deep-drawing operations
B65D 81/38 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
