CA2020868A1 - Polystyrene foam sheet manufacture - Google Patents
Polystyrene foam sheet manufactureInfo
- Publication number
- CA2020868A1 CA2020868A1 CA2020868A CA2020868A CA2020868A1 CA 2020868 A1 CA2020868 A1 CA 2020868A1 CA 2020868 A CA2020868 A CA 2020868A CA 2020868 A CA2020868 A CA 2020868A CA 2020868 A1 CA2020868 A1 CA 2020868A1
- Authority
- CA
- Canada
- Prior art keywords
- foam
- containers
- labels
- thermoplastic
- volatile
- 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.)
- Granted
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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
- B29C44/3419—Quick cooling
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3402—Details of processes or apparatus for reducing environmental damage or for working-up compositions comprising inert blowing agents or biodegradable components
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3442—Mixing, kneading or conveying the foamable material
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
- B29C44/507—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through an annular die
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/56—After-treatment of articles, e.g. for altering the shape
- B29C44/5609—Purging of residual gas, e.g. noxious or explosive blowing agents
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/83—Heating or cooling the cylinders
- B29C48/832—Heating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
-
- 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
-
- 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
- B29L2031/744—Labels, badges, e.g. marker sleeves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
Abstract
The method of making polystyrene foam for foam products which comprises utilizing atmospheric gases as the blowing agents or preferably mixing one or more of these gases and a blending agent which is non-volatile at the extrusion temperatures, introducing the mixture to a molten thermoplastic polystyrene resin containing nucleating agents such as sodium bicarbonate and citric acid and extruding the thermoplastic in the form of a foam. The resultant foam has substantially no residual blowing agent, is dimensionally stable at ambient temperatures and when used with a non-volatile blending agent can be made with small amounts of blowing agent permitting cooling of the melt without high loading on the extruder. The foam may be coextruded with one or more layers of thermoplastic film so that the resultant product is adapted for use for plates, cups, food containers or packaging and for labels for containers such as glass and plastic containers and for labels that are shrunk in place on a container.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/538,291 US5082608A (en) | 1990-06-14 | 1990-06-14 | Polystyrene foam sheet manufacture |
US07/538,291 | 1990-06-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2020868A1 true CA2020868A1 (en) | 1991-12-15 |
CA2020868C CA2020868C (en) | 1998-12-29 |
Family
ID=24146279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002020868A Expired - Lifetime CA2020868C (en) | 1990-06-14 | 1990-07-11 | Polystyrene foam sheet manufacture |
Country Status (12)
Country | Link |
---|---|
US (4) | US5082608A (en) |
EP (1) | EP0461298B1 (en) |
JP (1) | JPH0764005B2 (en) |
CN (2) | CN1057228A (en) |
AT (1) | ATE140181T1 (en) |
BR (1) | BR9003603A (en) |
CA (1) | CA2020868C (en) |
DE (1) | DE69027768T2 (en) |
FI (1) | FI903494A (en) |
NZ (1) | NZ234413A (en) |
TW (1) | TW205532B (en) |
ZA (1) | ZA905560B (en) |
Families Citing this family (81)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4011003A1 (en) * | 1990-04-05 | 1991-10-10 | Gerro Plast Gmbh | METHOD FOR PRODUCING FOAMED POLYSTYRENE FILMS |
US5082608A (en) * | 1990-06-14 | 1992-01-21 | Owens-Illinois Plastic Products Inc. | Polystyrene foam sheet manufacture |
US5215691A (en) * | 1990-09-05 | 1993-06-01 | The Dow Chemical Company | Method of forming a coextruded foam composite |
DE4036991A1 (en) * | 1990-11-20 | 1992-05-21 | Linde Ag | METHOD FOR THE USE OF INERT LEVELS IN THE PRODUCTION OF FOAMED PLASTICS |
US5158986A (en) | 1991-04-05 | 1992-10-27 | Massachusetts Institute Of Technology | Microcellular thermoplastic foamed with supercritical fluid |
US5322664A (en) * | 1993-02-02 | 1994-06-21 | Owens-Illinois Labels Inc. | Clear film extrusion from an annular die |
US5411683B1 (en) * | 1993-08-20 | 2000-08-01 | Sweetheart Cup Co | Method for making thermoplastic foam with combined 1,1-difluoroethane and co2 blowing agent |
US5866053A (en) * | 1993-11-04 | 1999-02-02 | Massachusetts Institute Of Technology | Method for providing continuous processing of microcellular and supermicrocellular foamed materials |
US5861201A (en) * | 1994-02-15 | 1999-01-19 | Owens-Illinois Labels Inc. | Multilayer label material |
EP0667234B1 (en) * | 1994-02-15 | 1998-05-06 | Owens-Illinois Labels Inc. | Multilayer label material |
US5629352A (en) * | 1995-04-24 | 1997-05-13 | Matsushita Electric Industrial Co., Ltd. | Solvent for polystyrene, method for reducing volume of polystyrene foam and method for recycling polystyrene foam |
US6005013A (en) * | 1995-08-14 | 1999-12-21 | Massachusetts Institute Of Technology | Gear throttle as a nucleation device in a continuous microcellular extrusion system |
US5688449A (en) * | 1995-10-02 | 1997-11-18 | Nitech Corporation | Method of forming and extruding an additive-coated resin composition |
US6884377B1 (en) | 1996-08-27 | 2005-04-26 | Trexel, Inc. | Method and apparatus for microcellular polymer extrusion |
WO1998008667A2 (en) * | 1996-08-27 | 1998-03-05 | Trexel, Inc. | Method and apparatus for microcellular polymer extrusion |
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US6042907A (en) | 1997-08-28 | 2000-03-28 | Owens-Illinois Labels Inc. | Coextrusion of multilayer film for container sleeve labels |
US6074678A (en) * | 1998-03-10 | 2000-06-13 | Owens-Illinois Labels Inc. | Plastic sheet base for packaging bacon |
US6123881A (en) * | 1998-09-16 | 2000-09-26 | Owens Corning Fiberglas Technology, Inc. | Process for producing extruded foam products having polystyrene blends with high levels of CO2 as a blowing agent |
US6093352A (en) * | 1998-09-16 | 2000-07-25 | Owens Corning Fiberglas Technology, Inc. | Process for producing foam by monitoring key process parameters |
US6187831B1 (en) | 1998-09-16 | 2001-02-13 | Owens Corning Fiberglas Technology, Inc. | Process for producing extruded foam products with higher levels of CO2 as a blowing agent |
AU757026B2 (en) | 1998-10-21 | 2003-01-30 | Owens Corning Intellectual Capital, Llc | Process for producing extruded foam |
ATE410285T1 (en) * | 1998-11-04 | 2008-10-15 | Trexel Inc | APPARATUS AND METHOD FOR SHAPING FOAM |
ATE201032T1 (en) * | 1999-01-20 | 2001-05-15 | Poliglas Sa | METHOD AND DEVICE FOR PRODUCING POLYSTYRENE FOAM, AND FOAM BLOCKS AND FOAM BOARDS OBTAINED THEREFROM |
US6391931B1 (en) * | 1999-04-28 | 2002-05-21 | 3M Innovative Properties Co | Uniform small cell foams and a continuous process for making same |
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US6576174B1 (en) * | 2000-01-27 | 2003-06-10 | Industrial Thermo Polymers Limited | Residual gas extraction process |
US6550938B2 (en) * | 2000-02-09 | 2003-04-22 | Lexalite International Corporation | Lighting fixture employing a partially reflective partially transmittive polymeric reflector |
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US20090214837A1 (en) * | 2008-02-21 | 2009-08-27 | Multi-Color Corporation | Insulating Label |
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JP5618403B2 (en) * | 2010-01-08 | 2014-11-05 | 積水化成品工業株式会社 | Method for producing polystyrene resin foam sheet and method for producing foamed molded product |
WO2012174568A2 (en) | 2011-06-17 | 2012-12-20 | Berry Plastics Corporation | Process for forming an insulated container having artwork |
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WO2023194847A1 (en) * | 2022-04-04 | 2023-10-12 | Flooring Industries Limited, Sarl | Method and apparatus for manufacturing an extruded sheet |
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-
1990
- 1990-06-14 US US07/538,291 patent/US5082608A/en not_active Expired - Lifetime
- 1990-07-09 NZ NZ234413A patent/NZ234413A/en unknown
- 1990-07-10 FI FI903494A patent/FI903494A/en not_active Application Discontinuation
- 1990-07-11 CA CA002020868A patent/CA2020868C/en not_active Expired - Lifetime
- 1990-07-16 ZA ZA905560A patent/ZA905560B/en unknown
- 1990-07-25 BR BR909003603A patent/BR9003603A/en not_active IP Right Cessation
- 1990-07-25 JP JP2195102A patent/JPH0764005B2/en not_active Expired - Lifetime
- 1990-07-28 AT AT90114543T patent/ATE140181T1/en not_active IP Right Cessation
- 1990-07-28 EP EP90114543A patent/EP0461298B1/en not_active Expired - Lifetime
- 1990-07-28 DE DE69027768T patent/DE69027768T2/en not_active Expired - Lifetime
- 1990-08-08 CN CN90106945A patent/CN1057228A/en active Pending
- 1990-08-22 TW TW081100656A patent/TW205532B/zh active
-
1993
- 1993-09-07 US US08/117,961 patent/US5674602A/en not_active Expired - Lifetime
- 1993-11-24 US US08/118,081 patent/US5443769A/en not_active Expired - Lifetime
-
1994
- 1994-12-07 CN CN94119684A patent/CN1106733A/en active Pending
-
1997
- 1997-10-06 US US08/944,591 patent/US5925450A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2020868C (en) | 1998-12-29 |
CN1057228A (en) | 1991-12-25 |
AU627337B2 (en) | 1992-08-20 |
JPH0764005B2 (en) | 1995-07-12 |
FI903494A0 (en) | 1990-07-10 |
BR9003603A (en) | 1991-12-17 |
DE69027768D1 (en) | 1996-08-14 |
JPH0449021A (en) | 1992-02-18 |
EP0461298B1 (en) | 1996-07-10 |
AU5896290A (en) | 1991-12-19 |
US5925450A (en) | 1999-07-20 |
CN1106733A (en) | 1995-08-16 |
DE69027768T2 (en) | 1997-02-13 |
TW205532B (en) | 1993-05-11 |
ZA905560B (en) | 1991-05-29 |
US5443769A (en) | 1995-08-22 |
US5082608A (en) | 1992-01-21 |
FI903494A (en) | 1991-12-15 |
EP0461298A1 (en) | 1991-12-18 |
US5674602A (en) | 1997-10-07 |
ATE140181T1 (en) | 1996-07-15 |
NZ234413A (en) | 1992-05-26 |
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Legal Events
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EEER | Examination request | ||
MKEX | Expiry |