BE847432A - Stratifie polymere thermoplastique contenant du polystyrene charge, - Google Patents

Stratifie polymere thermoplastique contenant du polystyrene charge,

Info

Publication number
BE847432A
BE847432A BE171631A BE171631A BE847432A BE 847432 A BE847432 A BE 847432A BE 171631 A BE171631 A BE 171631A BE 171631 A BE171631 A BE 171631A BE 847432 A BE847432 A BE 847432A
Authority
BE
Belgium
Prior art keywords
thermoplastic polymer
polymer laminate
laminate containing
containing filled
filled polystyrene
Prior art date
Application number
BE171631A
Other languages
English (en)
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 filed Critical
Publication of BE847432A publication Critical patent/BE847432A/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/18Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/30Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/30Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered 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
    • B32B5/18Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/50Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558Impact strength, toughness
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/704Crystalline
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00Containers; Receptacles
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/13Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352Polymer or resin containing [i.e., natural or synthetic]
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24496Foamed or cellular component
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249953Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249986Void-containing component contains also a solid fiber or solid particle
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249953Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987With nonvoid component of specified composition
    • Y10T428/249991Synthetic resin or natural rubbers
    • Y10T428/249992Linear or thermoplastic
    • Y10T428/249993Hydrocarbon polymer
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31909Next to second addition polymer from unsaturated monomers
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31909Next to second addition polymer from unsaturated monomers
    • Y10T428/31913Monoolefin polymer
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31909Next to second addition polymer from unsaturated monomers
    • Y10T428/31913Monoolefin polymer
    • Y10T428/31917Next to polyene polymer
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31855Of addition polymer from unsaturated monomers
    • Y10T428/31909Next to second addition polymer from unsaturated monomers
    • Y10T428/31924Including polyene monomers
BE171631A 1975-10-22 1976-10-19 Stratifie polymere thermoplastique contenant du polystyrene charge, BE847432A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA238,303A CA1069814A (fr) 1975-10-22 1975-10-22 Stratifies renfermant du polystyrene injecte

Publications (1)

Publication Number Publication Date
BE847432A true BE847432A (fr) 1977-04-19

Family

ID=4104349

Family Applications (1)

Application Number Title Priority Date Filing Date
BE171631A BE847432A (fr) 1975-10-22 1976-10-19 Stratifie polymere thermoplastique contenant du polystyrene charge,

Country Status (10)

Country Link
US (1) US4111349A (fr)
JP (1) JPS5938901B2 (fr)
BE (1) BE847432A (fr)
CA (1) CA1069814A (fr)
DE (1) DE2647861C2 (fr)
FR (1) FR2328570A1 (fr)
GB (1) GB1521569A (fr)
IT (1) IT1070312B (fr)
NL (1) NL175279C (fr)
SE (1) SE434818B (fr)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411978A (en) * 1977-06-29 1979-01-29 Kureha Chem Ind Co Ltd Preparation of barrier multilayered laminate
FR2415535A1 (fr) * 1978-01-30 1979-08-24 Ato Chimie Feuilles thermoplastiques multicouches
JPS55144158A (en) * 1979-04-27 1980-11-10 Dainippon Ink & Chemicals Compound extending sheet having excellent thermal molding property
US4360568A (en) * 1980-05-12 1982-11-23 Phillips Petroleum Company Hot melt adhesive and additive therefor
US4335181A (en) * 1980-07-01 1982-06-15 Mobil Oil Corporation Microwaveable heat and grease resistant containers
IT1167711B (it) * 1981-03-12 1987-05-13 Montefina Sa Laminato coestruso consistente in almeno un foglio di materiale polimerico a base di polistirene antiurto
JPS5983479U (ja) * 1982-11-30 1984-06-05 凸版印刷株式会社 合成樹脂製カツプ
GB8315164D0 (en) * 1983-06-02 1983-07-06 Redland Technology Ltd Boards
FR2562473B1 (fr) * 1984-04-06 1987-01-02 Elce Ets Nouveau materiau composite filmogene fluorescent, et procede de preparation
US4626455A (en) * 1985-01-14 1986-12-02 Owens-Illinois, Inc. Coextruded multilayer sheet and sleeve label for bottles
US4581262A (en) * 1985-01-14 1986-04-08 Owens-Illinois, Inc. Coextruded multilayer sheet and sleeve label made therefrom
US4585679A (en) * 1985-01-14 1986-04-29 Owens-Illinois, Inc. Coextruded multilayer sheet and tough sleeve label made therefrom
US4927675A (en) * 1985-12-31 1990-05-22 General Electric Company Filled core materials having unfilled outer attached layers
US4927690A (en) * 1986-01-13 1990-05-22 The Dow Chemical Company Thermoformable laminated packaging material
JP2570297B2 (ja) * 1986-06-23 1997-01-08 大日本インキ化学工業株式会社 二軸延伸複合スチレン系樹脂シ−ト
US4832775A (en) * 1987-05-20 1989-05-23 Mobil Oil Corporation Composite structure based on polystyrene foam and oriented polypropylene film and thermo-formed articles fabricated therefrom
US4847148A (en) * 1987-10-30 1989-07-11 W. R. Grace & Co. Thermoformable barrier sheet
US4935089A (en) * 1987-10-30 1990-06-19 W. R. Grace & Co.-Conn. Method of making a thermoformable barrier sheet
JPH0624806B2 (ja) * 1988-03-29 1994-04-06 日本ゼオン株式会社 複合成形品およびその製造法
US5009953A (en) * 1988-07-18 1991-04-23 The Dow Chemical Company Non-dusting window envelope film utilizing a particulate anti-flecking agent
US5017629A (en) * 1989-03-31 1991-05-21 The B F Goodrich Company Moldable low density thermoplastic composite with hollow glass spheres and the method for compounding
US5032627A (en) * 1989-03-31 1991-07-16 The B. F. Goodrich Company Method for reducing hollow glass sphere fracture in thermoplastic resin by melt or bulk polymerization/extrusion
TW232671B (fr) * 1990-01-16 1994-10-21 Idemitsu Petrochemical Co
US5118561A (en) * 1990-10-01 1992-06-02 W. R. Grace & Co.-Conn. Recycling of barrier polystyrene foam scrap and barrier polystyrene foam containing recycled barrier polystyrene foam scrap
CA2086481A1 (fr) * 1992-04-30 1993-10-31 James M. Kilton Plateau d'emballage hermetique
US5261023A (en) * 1992-06-30 1993-11-09 At&T Bell Laboratories Stable package of elongated optical fiber strand material
FR2693434B1 (fr) * 1992-07-10 1994-08-19 Kaysersberg Packaging Sa Plaque pleine à base de polyoléfine.
FR2725695B1 (fr) * 1994-10-13 1997-01-03 Oreal Conditionnement thermoplastique bicouche, son procede de fabrication
US5562980A (en) * 1994-11-02 1996-10-08 Cartons St-Laurent Inc. Multi-layer wrapper construction
JP3233643B2 (ja) 1996-07-08 2001-11-26 クライオバツク・インコーポレイテッド 気密密閉包装およびその製造方法と製造機
DE69811704T2 (de) 1997-10-31 2003-12-04 Dow Global Technologies, Inc. Kautschukmodifizierte monovinyliden-aromatische polymermischungen
EP1138604A1 (fr) * 2000-03-30 2001-10-04 Fina Research S.A. Récipients brillants en matière plastique
WO2002074843A2 (fr) * 2001-03-16 2002-09-26 Sentinel Products Corp. Structure de laminé à noyau de mousse de polyéthylène hdpe (haute densité)
EP1483116B1 (fr) * 2002-03-04 2006-01-04 International Paper Company Lamine pour une adhesion amelioree
US7129297B2 (en) * 2003-09-29 2006-10-31 Fina Technology, Inc. Polystyrene blends and a method of making same
US20060160928A1 (en) * 2005-01-18 2006-07-20 Cleveland Christopher S Thermoformed polystyrene products
CN101186132A (zh) * 2006-11-17 2008-05-28 深圳富泰宏精密工业有限公司 聚苯乙烯塑料片材
US20090110855A1 (en) * 2007-10-30 2009-04-30 Dixie Consumer Products Llc Filled Polystyrene Compositions and Uses Thereof
US7678444B2 (en) * 2007-12-17 2010-03-16 International Paper Company Thermoformed article made from renewable polymer and heat-resistant polymer
TW201000540A (en) * 2008-05-05 2010-01-01 Int Paper Co Thermoformed article made from bio-based biodegradable polymer composition
CN102648234A (zh) * 2009-12-08 2012-08-22 国际纸业公司 由生物基材料的反应性挤出产物制得的热成型制品
WO2015178927A1 (fr) 2014-05-23 2015-11-26 Bemis Company, Inc. Emballage pelable

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL278213A (fr) * 1961-05-10
US3157564A (en) * 1961-06-15 1964-11-17 Phillips Petroleum Co Polyolefin-rubber bond and method therefor
US3284542A (en) * 1963-03-22 1966-11-08 Rexall Drug Chemical Preparation of high impact compositions from vinyl aromatic monomers and rubbery diolefin polymers
US3352952A (en) * 1964-06-22 1967-11-14 Shell Oil Co Method of coloring thermoplastics
US3598642A (en) * 1966-03-18 1971-08-10 Japan Gas Chemical Co Printable polystyrene sheet material
US3589976A (en) * 1967-03-24 1971-06-29 Hercules Inc Composite films of polyolefins and polystyrene
US3619344A (en) * 1969-08-07 1971-11-09 Du Pont Oriented foam laminar structures
JPS5417789B1 (fr) * 1969-04-25 1979-07-03
US3660849A (en) * 1970-07-13 1972-05-09 Minnesota Mining & Mfg Deep submergence diving suit and insulative material therefor
US3696987A (en) * 1971-02-26 1972-10-10 Dart Ind Inc Coated cup and method of manufacture
US3738907A (en) * 1971-05-24 1973-06-12 Basf Ag Thermoplastic laminates bonded together by block copolymers
US3846360A (en) * 1971-12-13 1974-11-05 Phillips Petroleum Co Base for universal pigment concentrates
GB1437001A (en) * 1972-08-21 1976-05-26 Sidaplax Laminates
US3798903A (en) * 1972-12-29 1974-03-26 Gen Motors Corp Exhaust reactor manifold
CA1035880A (fr) * 1974-05-07 1978-08-01 Polysar Limited Composes de polystyrene fillerise
US4008347A (en) * 1974-06-24 1977-02-15 Owens-Illinois, Inc. Receptacle of foamed plastic lined with unoriented polyolefin film

Also Published As

Publication number Publication date
NL7611483A (nl) 1977-04-26
GB1521569A (en) 1978-08-16
IT1070312B (it) 1985-03-29
JPS5938901B2 (ja) 1984-09-19
CA1069814A (fr) 1980-01-15
DE2647861C2 (de) 1982-11-18
US4111349A (en) 1978-09-05
FR2328570B1 (fr) 1983-07-29
NL175279B (nl) 1984-05-16
JPS5251478A (en) 1977-04-25
NL175279C (nl) 1984-10-16
SE434818B (sv) 1984-08-20
DE2647861A1 (de) 1977-05-05
SE7611547L (sv) 1977-04-23
FR2328570A1 (fr) 1977-05-20

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: POLYSAR LTD

Effective date: 19931031