Patent US4684564A successfully refreshed from Google Patents.
US4684564A
Expired / Lapsed
US
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Heat-laminating composite film and laminated material using the same
Assignee: Kuraray Co Ltd
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Filing: 1985-05-08
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Granted: 1987-08-04
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Expires: 2005-05-08
Abstract
Abstract A heat-laminatable composite film obtained by providing, in sequence, a layer of a mixture of (B) a reactive polyurethane containing isocyanate groups therein and (C) a vinyl chloride-vinyl acetate copolymer on one surface of a film of (A) a saponified product of ethylene-vinyl acetate copolymer, or, Layer (B) and further Layer (C) on one surface of the film of (A). A laminated material obtained by heat-laminating the composite film onto at least one surface of a plasticized polyvinyl chloride layer. The heat-laminatable composite film of the present invention is excellent in blocking resistance and adhesive strength. Further by heat-laminating the composite film onto the plasticized polyvinyl chloride layer, bleeding of the plasticizer in the polyvinyl chloride layer can be prevented.
Inventors
- 👤 Kenji Satoh
- 👤 Isao Kaneshige
- 👤 Kyoichiro Ikari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:05
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/10; B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/18; B32B27/22; B32B27/30; B32B27/304; B32B27/306; B32B27/40; C08; C08J; C08J5/00; C08J5/12; C08J7/00; C08J7/04; C08J7/043; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; C08J2329/00; C08J2329/02; C08J2329/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
94 words
A heat-laminatable composite film comprising (A) a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 60 mol% and a saponificaton degree of the vinyl acetate component of not less than 95%, (B) a reactive polyurethane containing isocyanate groups and (C) a vinyl chloride copolymer containing 60 to 99 mol% of the vinyl chloride component and 40 to 1 mol% of a vinyl acetate and/or (meth)acrylate component, said film, having a layer construction of either Layer A/Layer B/Layer C or Layer A/Layer of a mixture of B and C.
Claim 2
Dependent Claim
94 words
A heat-laminatable composite film comprising (A) a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 60 mol% and a saponificaton degree of the vinyl acetate component of not less than 95%, (B) a reactive polyurethane containing isocyanate groups and (C) a vinyl chloride copolymer containing 60 to 99 mol% of the vinyl chloride component and 40 to 1 mol% of a vinyl acetate and/or (meth)acrylate component, said film, having a layer construction of either Layer A/Layer B/Layer C or Layer A/Layer of a mixture of B and C.
Claim 3
Dependent Claim
26 words
A composite film according to claim 1 wherein said saponified product of an ethylene-vinyl acetate copolymer (A) has an ethylene content of 25 to 50 mol%.
Claim 4
Dependent Claim
74 words
A composite film according to claim 1 wherein Layer A comprises a binary layer of a layer of a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 35 mol% and a layer of a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 40 to 60 mol%, the former layer being positioned adjacent Layer B or the Layer of a mixture of B and C.
Claim 5
Dependent Claim
16 words
A composite film according to claim 1 having a layer construction of Layer A/Layer B/Layer C.
Claim 6
Dependent Claim
36 words
A composite film according to claim 4 wherein the thickness of Layer A is 5 to 50μ, the thickness of Layer B is 0.5 to 10μ and the thickness of Layer C is 1 to 10μ.
Claim 7
Dependent Claim
26 words
A composite film according to claim 1 comprising a layer of a mixture of (B) and (C) in a C/B mixing ratio of 1/2 to 6.
Claim 8
Dependent Claim
35 words
A composite film according to claim 6 wherein the thickness of said Layer A is 5 to 50μ and the thickness of said Layer of a mixture of B and C is 1 to 10μ.
Claim 9
Dependent Claim
134 words
A laminated material which comprises heat-laminating a composite film comprising (A) a saponified product of an ethylene-vinyl acetate copolymer having the ethylene content of 20 to 60 mol% and a saponification degree of the vinyl acetate component of not less than 95%, (B) a reactive polyurethane containing isocyanate groups and (C) a vinyl chloride copolymer containing 60 to 99 mol% of the vinyl chloride component and 40 to 1 mol% of a vinyl acetate component and/or a (meth)acrylate, component, said film having a layer construction of either Layer A/Layer B/Layer C or Layer A/Layer of a mixture of B and C, onto at least one surface (D) of plasticized polyvinyl chloride in such a manner that Layer D is positioned adjacent Layer C or adjacent the Layer of said mixture of B and C.
Claim 10
Dependent Claim
134 words
A laminated material which comprises heat-laminating a composite film comprising (A) a saponified product of an ethylene-vinyl acetate copolymer having the ethylene content of 20 to 60 mol% and a saponification degree of the vinyl acetate component of not less than 95%, (B) a reactive polyurethane containing isocyanate groups and (C) a vinyl chloride copolymer containing 60 to 99 mol% of the vinyl chloride component and 40 to 1 mol% of a vinyl acetate component and/or a (meth)acrylate, component, said film having a layer construction of either Layer A/Layer B/Layer C or Layer A/Layer of a mixture of B and C, onto at least one surface (D) of plasticized polyvinyl chloride in such a manner that Layer D is positioned adjacent Layer C or adjacent the Layer of said mixture of B and C.
Claim 11
Dependent Claim
38 words
A laminated material of claim 8 wherein said Layer (D) of plasticized polyvinyl chloride is a polyvinyl chloride layer containing 25 to 55 wt% of a plasticizer which is liquid at 20° C. based on the total weight.
Claim 12
Dependent Claim
107 words
A heat-laminatable composite film comprising (A) layer of a saponified product of an ethylene vinyl acetate copolymer having an ethylene content of 20 to 60 mole % and a saponification degree of the vinyl acetate component of not less than 95%, coated with (B), a solution of a reactive polyurethane containing isocyanate groups and (C), a solution of a vinyl chloride copolymer containing 60 to 99 mol % of the vinyl chloride component and 40 to 1 mole % of a vinyl acetate and/or (meth)acrylate component, said composite film having a layered construction of either Layer A/Layer B/Layer C or Layer A/Layer of a mixture of B+C.
Claim 13
Dependent Claim
107 words
A heat-laminatable composite film comprising (A) layer of a saponified product of an ethylene vinyl acetate copolymer having an ethylene content of 20 to 60 mole % and a saponification degree of the vinyl acetate component of not less than 95%, coated with (B), a solution of a reactive polyurethane containing isocyanate groups and (C), a solution of a vinyl chloride copolymer containing 60 to 99 mol % of the vinyl chloride component and 40 to 1 mole % of a vinyl acetate and/or (meth)acrylate component, said composite film having a layered construction of either Layer A/Layer B/Layer C or Layer A/Layer of a mixture of B+C.
Claim 14
Dependent Claim
54 words
A heat-laminatable composite film according to claim 10, wherein the thickness of layer A is 5 to 50μ, the thickness of layer B is 0.5 to 10μ, and the thickness of layer C is 1 to 10μ or the thickness of the layer of the mixture of B and C is 1 to 10μ.
Claim 15
Dependent Claim
143 words
A laminated material which comprises a composite film comprising (A) a layer of a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 60 mol% and a saponification degree of the vinyl acetate component of not less than 95%, coated with (B), a solution of a reactive polyurethane containing isocyanate groups and (C), a solution of a vinyl chloride copolymer containing 60 to 99 mol% of the vinyl chloride component and 40 to 1 mol% of a vinyl acetate component and/or a (meth)acrylate component, said composite film having a layered construction of either Layer A/Layer B/Layer C or Layer A/Layer of a mixture of B+C, heat laminated onto at least one surface of a layer (D) of plasticized polyvinyl chloride so that layer D is adjacent layer C of the layer of a mixture of B and C.
Claim 16
Dependent Claim
143 words
A laminated material which comprises a composite film comprising (A) a layer of a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 60 mol% and a saponification degree of the vinyl acetate component of not less than 95%, coated with (B), a solution of a reactive polyurethane containing isocyanate groups and (C), a solution of a vinyl chloride copolymer containing 60 to 99 mol% of the vinyl chloride component and 40 to 1 mol% of a vinyl acetate component and/or a (meth)acrylate component, said composite film having a layered construction of either Layer A/Layer B/Layer C or Layer A/Layer of a mixture of B+C, heat laminated onto at least one surface of a layer (D) of plasticized polyvinyl chloride so that layer D is adjacent layer C of the layer of a mixture of B and C.
Claim 17
Dependent Claim
34 words
A laminated material according to claim 12, wherein layer D is a polyvinyl chloride layer containing 25 to 55 wt% based on the total weight of a plasticizer which is liquid at 20° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-03 | 1991-02-02 | 1991-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-03 | 1995-02-02 | 1995-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-03 | 1999-02-02 | 1999-08-04 | $7700.00 | Window Closed / Lapsed |