GB866801A - Plastic material drinking cups - Google Patents

Plastic material drinking cups

Info

Publication number
GB866801A
GB866801A GB38755/57A GB3875557A GB866801A GB 866801 A GB866801 A GB 866801A GB 38755/57 A GB38755/57 A GB 38755/57A GB 3875557 A GB3875557 A GB 3875557A GB 866801 A GB866801 A GB 866801A
Authority
GB
United Kingdom
Prior art keywords
polymer
container
styrene
styrene polymer
inch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB38755/57A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monsanto Chemicals Ltd
Monsanto Chemical Co
Original Assignee
Monsanto Chemicals Ltd
Monsanto Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Monsanto Chemicals Ltd, Monsanto Chemical Co filed Critical Monsanto Chemicals Ltd
Publication of GB866801A publication Critical patent/GB866801A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/002—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
    • B65D1/265—Drinking cups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—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
    • B65D81/38—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
    • B65D81/3865—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 drinking cups or like containers
    • B65D81/3867—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 drinking cups or like containers formed of foam material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/046—Condition, form or state of moulded material or of the material to be shaped cellular or porous with closed cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7132—Bowls, Cups, Glasses

Abstract

The invention comprises a rigid self-sustaining container suitable for holding hot aqueous liquids having walls formed from a cellular non-porous styrene polymer having a density of less than 10 lbs. per cubic foot and a closed cell structure of which the majority of the cells have a diameter less than 0,05 inch, the walls of the container being at least 0,03 inch thick. The bottom of the container may be of the same material as the wall or may be of another material such as plastic, metal or paper. The container can be formed from styrene polymer particles, or (for example using vacuum drape-forming technique) from a sheet of foamed styrene polymer. The foamed sheets are obtained by extruding a styrene polymer in which there has been incorporated a foaming agent and an alkaline earth metal sulphate of particle size less than 5 microns to reduce the pore size. Preferred foaming agents are aliphatic and cycloaliphatic hydrocarbons having boiling points between 10 DEG and 80 DEG C. In an example the foamed material is prepared by treating polystyrene beads having 6% by weight of pentane incorporated first with an aqueous solution of barium chloride and then with aqueous sodium sulphate. Sodium chloride is washed out and after drying, the beads (coated with barium sulphate) are extruded at 325 DEG F. and 400 lbs./sq. in. to give a product of cell size 0,014 inch. There may also be used: interpolymers of styrene with 1,3-dienes; a , b -unsaturated carboxylic acids and their functional derivatives; divinyl benzene; a blend or graft polymer of polystyrene and a rubbery diene polymer; or a polymer of a -methylstyrene, o-, m-, or p-methyl or ethyl styrene, or 2,4-dimethylstyrene. The containers can also be used for packaging ice cream and cottage cheese.ALSO:A rigid self-sustaining container suitable for holding hot aqueous liquids has walls formed from a cellular non-porous styrene polymer having a density of less than 10 lbs. per cubic foot and a closed cell structure of which the majority of the cells have a diameter of less than 0,05 inch, the walls of the container being at least 0,03 inches thick. The bottom of the container may be of the same material as the wall or may be of another material such as plastic, metal or paper. The container can be formed from styrene polymer particles, or (for example, using vacuum drape-forming technique) from a sheet of foamed styrene polymer. The foamed sheets are obtained by extruding a styrene polymer in which there has been incorporated a foaming agent and an alkaline earth metal sulphate of particle size less than 5 microus to reduce the pore size. Preferred foaming agents are aliphatic and cycloaliphatic having boiling points between 10 DEG and 80 DEG C. In an example the foamed material is prepared by treating polystyrene beads having 6% by weight of pentane incorporated first with an aqueous solution of barium chloride and then with aqueous sodium sulphate. Sodium chloride is washed out and after drying, the beads (coated with barium sulphate) are extruded at 325 DEG F. and 400 lbs./sq. in. to give a product of cell size 0,014 inch. There may also be used: interpolymers of styrene with 1,3-drives; a , b -unsaturated carboxylic acids and their functional derivations; divinyl benzene; a blend or graft polymer of polystyrene and a rubbery diene polymer; or a polymer of a -methylstyrene, o-, m-, or p-methyl or ethylstyrene or 2, 4- dimethylstyrene.
GB38755/57A 1956-12-14 1957-12-13 Plastic material drinking cups Expired GB866801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US866801XA 1956-12-14 1956-12-14

Publications (1)

Publication Number Publication Date
GB866801A true GB866801A (en) 1961-05-03

Family

ID=22200159

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38755/57A Expired GB866801A (en) 1956-12-14 1957-12-13 Plastic material drinking cups

Country Status (1)

Country Link
GB (1) GB866801A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8828170B2 (en) 2010-03-04 2014-09-09 Pactiv LLC Apparatus and method for manufacturing reinforced containers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8828170B2 (en) 2010-03-04 2014-09-09 Pactiv LLC Apparatus and method for manufacturing reinforced containers
US9676141B2 (en) 2010-03-04 2017-06-13 Pactiv LLC Apparatus and method for manufacturing reinforced containers

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