CA1049729A - Coextrusion of polystyrene layers of different densities - Google Patents
Coextrusion of polystyrene layers of different densitiesInfo
- Publication number
- CA1049729A CA1049729A CA214,855A CA214855A CA1049729A CA 1049729 A CA1049729 A CA 1049729A CA 214855 A CA214855 A CA 214855A CA 1049729 A CA1049729 A CA 1049729A
- Authority
- CA
- Canada
- Prior art keywords
- melt
- nucleating agent
- streams
- laminate
- die
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
-
- 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
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/32—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed at least two layers being foamed and next to each other
-
- 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
- C08J9/0004—Use of compounding ingredients, the chemical constitution of which is unknown, broadly defined, or irrelevant
-
- 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
-
- 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
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0221—Vinyl resin
- B32B2266/0228—Aromatic vinyl resin, e.g. styrenic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US42002573A | 1973-11-29 | 1973-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1049729A true CA1049729A (en) | 1979-03-06 |
Family
ID=23664760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA214,855A Expired CA1049729A (en) | 1973-11-29 | 1974-11-28 | Coextrusion of polystyrene layers of different densities |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS5746418B2 (de) |
BE (1) | BE822475A (de) |
CA (1) | CA1049729A (de) |
DE (1) | DE2456337A1 (de) |
ES (1) | ES432015A1 (de) |
FR (1) | FR2252915B1 (de) |
GB (1) | GB1439438A (de) |
IT (1) | IT1026617B (de) |
NL (1) | NL7415497A (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4518557A (en) * | 1981-05-18 | 1985-05-21 | James River-Norwalk, Inc. | Process for skin foam |
DE3722539A1 (de) * | 1987-07-08 | 1989-01-19 | Reichenecker Hans Storopack | Geschaeumter formkoerper |
US5215691A (en) * | 1990-09-05 | 1993-06-01 | The Dow Chemical Company | Method of forming a coextruded foam composite |
US5358675A (en) * | 1992-05-13 | 1994-10-25 | Mobil Oil Corporation | Controlling heterogeneous nucleation and growth of foams |
US7655296B2 (en) | 2003-04-10 | 2010-02-02 | 3M Innovative Properties Company | Ink-receptive foam article |
US7820282B2 (en) | 2003-04-10 | 2010-10-26 | 3M Innovative Properties Company | Foam security substrate |
GB2474431B (en) | 2009-10-13 | 2012-10-31 | Gurit Uk Ltd | Production of extruded foam |
EP3424667A1 (de) * | 2012-03-02 | 2019-01-09 | Orac Holding NV | Verfahren zur herstellung eines kunststoffverbundmaterialprofils |
-
1974
- 1974-11-12 GB GB4890874A patent/GB1439438A/en not_active Expired
- 1974-11-16 ES ES432015A patent/ES432015A1/es not_active Expired
- 1974-11-21 JP JP49133242A patent/JPS5746418B2/ja not_active Expired
- 1974-11-21 BE BE150749A patent/BE822475A/xx unknown
- 1974-11-27 NL NL7415497A patent/NL7415497A/xx not_active Application Discontinuation
- 1974-11-28 IT IT29956/74A patent/IT1026617B/it active
- 1974-11-28 CA CA214,855A patent/CA1049729A/en not_active Expired
- 1974-11-28 DE DE19742456337 patent/DE2456337A1/de not_active Withdrawn
- 1974-11-29 FR FR7439288A patent/FR2252915B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT1026617B (it) | 1978-10-20 |
BE822475A (fr) | 1975-05-21 |
JPS5086559A (de) | 1975-07-11 |
NL7415497A (nl) | 1975-06-02 |
FR2252915B1 (de) | 1978-11-24 |
ES432015A1 (es) | 1976-10-16 |
DE2456337A1 (de) | 1975-06-05 |
GB1439438A (en) | 1976-06-16 |
FR2252915A1 (de) | 1975-06-27 |
JPS5746418B2 (de) | 1982-10-02 |
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