UST941018I4 - Processes for the production of shaped articles - Google Patents
Processes for the production of shaped articles Download PDFInfo
- Publication number
- UST941018I4 UST941018I4 US50654374A UST941018I4 US T941018 I4 UST941018 I4 US T941018I4 US 50654374 A US50654374 A US 50654374A US T941018 I4 UST941018 I4 US T941018I4
- Authority
- US
- United States
- Prior art keywords
- shaped articles
- shaped
- production
- cold
- processes
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title description 7
- 238000000034 method Methods 0.000 title description 7
- 238000009998 heat setting Methods 0.000 abstract description 4
- 229920000728 polyester Polymers 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- -1 POLYETHYLENE TEREPHTHALATE Polymers 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 230000001351 cycling effect Effects 0.000 abstract description 2
- 230000009477 glass transition Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 2
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 2
- 238000010791 quenching Methods 0.000 abstract description 2
- 230000000171 quenching effect Effects 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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—Rigid or semi-rigid 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 or by deep-drawing operations performed on sheet material
- B65D1/34—Trays or like shallow containers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/022—Cooking- or baking-vessels or supports thereof for using only once
Definitions
- Shaped articles such as food trays and the like, are produced by cold-forming polyester, especially oriented polyethylene terephthalate, films below the polyester glass transition temperature, heat setting and quenching. Slight relaxation at the heat setting temperature may be effected to improve dimensional stability. Short cycling times can be achieved by using a cold-forming punch of low thermal capacity, for instance a shaped copper sheet, through which the shaped film is heated while held in the deformed condition. Lids may be applied to the shaped articles by melt adhesives. Food containers so formed are suitable for heating in both conventional and microwave ovens.
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Laminated Bodies (AREA)
Abstract
SHAPED ARTICLES, SUCH AS FOOD TRAYS AND THE LIKE, ARE PRODUCED BY COLD-FORMING POLYESTER, ESPECIALLY ORIENTED POLYETHYLENE TEREPHTHALATE, FILMS BELOW THE POLYESTER GLASS TRANSITION TEMPERATURE, HEAT SETTING AND QUENCHING. SLIGHT RELAXATION AT THE HEAT SETTING TEMPERATURE MAY BE EFFECTED TO IMPROVE DIMENSIONAL STABILITY. SHORT CYCLING TIMES CAN BE ACHEIVED BY USING A COLD-FORMING PUNCH OF LOW THERMAL CAPACITY, FOR INSTANCE A SHAPED COPPER SHEET, THROUGH WHICH THE SHAPED FILM IS HEATED WHILE HELD IN THE DEFORMED CONDITION. LIDS MAY BE APPLIED TO THE SHAPED ARTICLES BY MELT ADHESIVES. FOOD CONTAINERS SO FORMED ARE SUITABLE FOR HEATING IN BOTH CONVENTIONAL AND MICROWAVE OVENS.
Description
DEFENSIVE PUBLICATIGN UNITED STATES PATENT AND TRADEMARK OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. f6, 1969, 869 O.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered seriesand are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheer.
Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent and Trademark Otfice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED DECEMBER 2, 1975 T94-L018 PROCESS FOR THE PRODUCTION OF SHAPED ARTICLES Kenneth Clarke, Kncbwerth, England, assignor to Imperial Chemical Industries Limited, London, England Filed Sept. 16, 1974, Ser. No. 506,543 Claims priority, application Great Britain, Sept. 20, 1973,
44,132/73; Nov. 23, 1973, 54,386/73 Int. Cl. 1329c 27/06 U.S. Cl. 156-69 5 Sheets Drawing. 22 Pages Specification Shaped articles, such as food trays and the like, are produced by cold-forming polyester, especially oriented polyethylene terephthalate, films below the polyester glass transition temperature, heat setting and quenching. Slight relaxation at the heat setting temperature may be effected to improve dimensional stability. Short cycling times can be achieved by using a cold-forming punch of low thermal capacity, for instance a shaped copper sheet, through which the shaped film is heated while held in the deformed condition. Lids may be applied to the shaped articles by melt adhesives. Food containers so formed are suitable for heating in both conventional and microwave ovens.
Dec. 2, 1975 K. CLARKE T941,0l8
PROCESSES FOR THE PRODUCTION OF SHAPED ARTICLES Original Filed Sept. 16, 1974 Sheet 1 of 5 I! A, 42 Q T -/2 M 1 i Dec. 2, 1975 K. CLARKE T941,018
PROCESSES FOR THE PRODUCTION OF SHAPED ARTICLES Original Filed Sept. 16, 1974 Sheet 2 of 5 r% f% A F/GO Dec. 2, 1975 K. CLARKE T941,018
PROCESSES FOR THE PRODUCTION OF SHAPED ARTICLES On'ginal Filed Sept. 16, 1974 Sheet 3 of 5 mg L N i fi\\\ W DC. 2, 1975 K. CLARKE PROCESSES FOR THE PRODUCTION OF SHAPED ARTICLES Sheet 4 of 5 Original Filed Sept. 16, 1974 Dec. 2, 1975 K. CLARKE T941,018
PROCESSES FOR THE PRODUCTION OF SHAPED ARTICLES Original Filed Sept. 16, 1974 Sheet 5 of 5 FIG.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4413273 | 1973-09-20 | ||
| GB5438673 | 1973-11-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST941018I4 true UST941018I4 (en) | 1975-12-02 |
Family
ID=26265335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US50654374 Pending UST941018I4 (en) | 1973-09-20 | 1974-09-16 | Processes for the production of shaped articles |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST941018I4 (en) |
-
1974
- 1974-09-16 US US50654374 patent/UST941018I4/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3429854A (en) | Process for sheet forming polyethylene terephthalate | |
| EP0496260A3 (en) | Process for production of polypropylene sheets or films | |
| JPH06500809A (en) | Heat-resistant copolyester films and containers | |
| SE7609660L (en) | WAY TO PRODUCE FOREMALS OF TRANSPARENT PLASTIC | |
| EP0531705A3 (en) | Styrenic resin molding and process for producing same | |
| US2784456A (en) | Heat-shrinkable film and process for producing the same | |
| UST941018I4 (en) | Processes for the production of shaped articles | |
| WO2020131364A1 (en) | Anti-blush and chemical resistant polyester film | |
| JPS5573516A (en) | Manufacture of heat-resisting container from polyethylene terephthalate | |
| UST915001I4 (en) | Forming polyethylene terephthalate | |
| GB1236432A (en) | Improvements in or relating to processes for the manufacturing of shaped articles | |
| KR100215479B1 (en) | Biaxial oriented polyester film | |
| JPS55161622A (en) | Manufacture of polyester bottle | |
| EP0435234B1 (en) | Process for thermoforming thermoplastic resin sheet and apparatus therefor | |
| DE2965120D1 (en) | Process for the manufacture of flat thermoplastic films having improved dimensional stability | |
| JPS5755922A (en) | Polyester container | |
| US2876185A (en) | Chlorination of polyester structure | |
| US4374800A (en) | Method for making an article of partially crystalline organic resin | |
| JPH04356533A (en) | Heat-shrinking polyester film | |
| UST934013I4 (en) | Defensive publication | |
| JPH11277625A (en) | Heat shrinkable polyester film | |
| CN112920521A (en) | Plastic coiled material and production process thereof | |
| JP3523473B2 (en) | Heat and cold resistant food containers | |
| JPH04293920A (en) | Thermoforming material and thermoform | |
| GB1340687A (en) | Thermoplastic film with a degree of planarity and process for the production thereof |