CA2091365A1 - Composite polymeric articles - Google Patents

Composite polymeric articles

Info

Publication number
CA2091365A1
CA2091365A1 CA002091365A CA2091365A CA2091365A1 CA 2091365 A1 CA2091365 A1 CA 2091365A1 CA 002091365 A CA002091365 A CA 002091365A CA 2091365 A CA2091365 A CA 2091365A CA 2091365 A1 CA2091365 A1 CA 2091365A1
Authority
CA
Canada
Prior art keywords
polymer
soluble
insoluble
layer
mechanical strength
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
Application number
CA002091365A
Other languages
French (fr)
Other versions
CA2091365C (en
Inventor
Henry Guy Stevens
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.)
PROGRAMMABLE LIFE Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2091365A1 publication Critical patent/CA2091365A1/en
Application granted granted Critical
Publication of CA2091365C publication Critical patent/CA2091365C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered 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
    • B32B27/08—Layered 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
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • 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
    • B32B2307/728—Hydrophilic

Abstract

Composite polymeric articles, which may be in layer or film form, comprise a larger portion of a polymer which is water-soluble at 20 ° C against a smaller proportion of a polymer which is substantially water-insoluble at that temperature. For exam-ple, a layer product may have a thin layer (e.g. less than 5µm) of insoluble polymer superimposed on a thicker layer (e.g. at least 20µm) of soluble polymer. Both polymers are conveniently polyvinyl alcohol, which is non-toxic and useful in a number of dom-estic applications e.g. as a nappy backing sheet. The insoluble portion gives water resistance but negligible mechanical strength;
the soluble part gives the mechanical strength. On dissolution of the soluble portion, the insoluble portion disintegrates mechani-cally. Articles may be made by co-extrusion or by moulding.
CA002091365A 1990-07-24 1991-07-24 Composite polymeric articles Expired - Fee Related CA2091365C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9016151.4 1990-07-24
GB909016151A GB9016151D0 (en) 1990-07-24 1990-07-24 Composite polymeric articles
PCT/GB1991/001237 WO1992001556A1 (en) 1990-07-24 1991-07-24 Composite polymeric articles

Publications (2)

Publication Number Publication Date
CA2091365A1 true CA2091365A1 (en) 1992-01-25
CA2091365C CA2091365C (en) 2003-05-13

Family

ID=10679521

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002091365A Expired - Fee Related CA2091365C (en) 1990-07-24 1991-07-24 Composite polymeric articles

Country Status (8)

Country Link
EP (1) EP0540593A1 (en)
JP (1) JPH05509045A (en)
AU (1) AU656731B2 (en)
BR (1) BR9106667A (en)
CA (1) CA2091365C (en)
GB (1) GB9016151D0 (en)
WO (1) WO1992001556A1 (en)
ZA (1) ZA915792B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5280835A (en) * 1990-05-02 1994-01-25 Rhone-Poulenc Inc. Laminated bags for containerization of toxic and hazardous materials
IE64670B1 (en) * 1990-05-02 1995-08-23 Rhone Poulenc Agriculture Soluble sachets
HUT70712A (en) * 1992-04-23 1995-10-30 British Tech Group Int Procedure and apparatus for manufacturing of multi-layer articles from organic polymers
CA2113151A1 (en) * 1993-01-25 1994-07-26 Stacy W. Byrd Multi-layer waterproofing articles including a layer of water-soluble polymer and method
US6579814B1 (en) 1994-12-30 2003-06-17 3M Innovative Properties Company Dispersible compositions and articles of sheath-core microfibers and method of disposal for such compositions and articles
US5472518A (en) * 1994-12-30 1995-12-05 Minnesota Mining And Manufacturing Company Method of disposal for dispersible compositions and articles
KR100353583B1 (en) * 1994-12-30 2003-03-15 킴벌리-클라크 월드와이드, 인크. Water Washable Film
EP0848730B1 (en) * 1995-09-08 2000-12-20 Solplax Limited Method for the manufacture of biodegradable plastic material
GB2320456B (en) 1996-12-18 2001-09-05 Fip Holdings Ltd Polymer processing method
JP2001526714A (en) * 1997-05-08 2001-12-18 ポリヴァル リサーチ リミテッド Biodegradable material, biodegradable product and production method thereof
US6838504B1 (en) 1998-05-06 2005-01-04 Solucorp Industries Ltd. Integrated fixation systems
GB2378705B (en) 1998-08-26 2003-03-26 Pvaxx Technologies Ltd PVA-Containing compositions
GB0005016D0 (en) 2000-03-01 2000-04-26 Jumik Technologies Limited PVA-Containing compositions
GB2376680A (en) * 2001-06-19 2002-12-24 Procter & Gamble Laundry bag with water soluble features
US7049272B2 (en) 2002-07-16 2006-05-23 Santrol, Inc. Downhole chemical delivery system for oil and gas wells
GB0228618D0 (en) * 2002-12-07 2003-01-15 Grt Ltd Method & apparatus for packing powdered or granular material
DE102008063520A1 (en) 2008-12-18 2010-07-01 Huhtamaki Forchheim Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg Rinsable multilayer film

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546716A (en) * 1968-06-19 1970-12-15 David H E Laumann Disposable bedpan liner
US3790067A (en) * 1970-12-04 1974-02-05 S Scheier Container
DE2960701D1 (en) * 1978-09-21 1981-11-19 Intermedicat Gmbh Multilayer sheet disintegratable in an aqueous medium, and vessel and bag made from this sheet
MX151028A (en) * 1978-11-17 1984-09-11 Unilever Nv IMPROVEMENTS IN INSOLUBLE BAG BUT PERMEABLE TO WATER THAT HAS A DISPERSIBLE PROTECTIVE LAYER OR SOLUBLE IN WATER, WHICH CONTAINS A PARTICULATE DETERGENT COMPOSITION
US4372311A (en) * 1980-09-12 1983-02-08 Union Carbide Corporation Disposable articles coated with degradable water insoluble polymers
GB2193925B (en) * 1986-08-18 1990-07-04 Enak Ltd Improvements relating to wc-disposable sheet material

Also Published As

Publication number Publication date
AU656731B2 (en) 1995-02-16
JPH05509045A (en) 1993-12-16
CA2091365C (en) 2003-05-13
GB9016151D0 (en) 1990-09-05
BR9106667A (en) 1993-06-08
ZA915792B (en) 1992-04-29
WO1992001556A1 (en) 1992-02-06
AU8228191A (en) 1992-02-18
EP0540593A1 (en) 1993-05-12

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20040726