US4699846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-resistant and oil-resistant laminate film and process for preparing the same
Assignee: Kureha Corp
•
Filing: 1984-06-27
•
Granted: 1987-10-13
•
Expires: 2004-06-27
Abstract
Abstract Disclosed herein are a heat-resistant and oil-resistant laminate film comprising gas-barrier resin layer(s), thermoplastic resin layer(s) different from a gas-barrier resin and adhesive layer(s) disposed between the gas-barrier resin layer and the thermoplastic resin layer, produced by co-extruding a gas-barrier resin, a thermoplastic resin and an adhesive composition and irradiating the co-extruded laminate, the total number of the layers of the laminate film being not less than 3, and the adhesive layer comprising a cross-linked polymer and the adhesive composition consisting essentially of 100 parts by weight of a melt-extrudable adhesive resin and 0.1 to 50 parts by weight of a radiation-sensitive compound, and a process for producing the heat-resistant and oil-resistant laminate film.
Inventors
- 👤 Masaki Ohya
- 👤 Yoshiharu Nishimoto
- 👤 Kunio Shibuya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:24
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B7/00; B32B7/04; B32B7/12; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/70; B32B2307/728; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
177 words
A heat-resistant and oil-resistant laminate film comprising: (1) a gas-barrier resin layer, the resin of which is a copolymer of vinylidene chloride, a saponified copolymer of ethylene and vinyl acetate, or a copolymer of acrylonitrile; (2) a thermoplastic resin layer different from the gas-barrier resin; and (3) an adhesive layer disposed between the said gas-barrier resin layer and the said thermoplastic resin layer; wherein the said laminate film is produced by co-extruding the gas-barrier resin, the thermoplastic resin and the adhesive layer composition and irradiating the co-extruded laminate, and wherein the total number of the layers of the laminate film is not less than 3; and wherein (i) the adhesive layer comprises a cross-linked polymer and (ii) the adhesive layer composition consists essentially of 100 parts by weight of a melt-extrudable adhesive resin and 0.1 to 50 parts by weight of a radiation sensitive compound, which is at least one member selected from the group consisting of acryloyl compounds and methacryloyl compounds having each a molecular weight of more than 200 and two to six functional groups.
Claim 2
Dependent Claim
177 words
A heat-resistant and oil-resistant laminate film comprising: (1) a gas-barrier resin layer, the resin of which is a copolymer of vinylidene chloride, a saponified copolymer of ethylene and vinyl acetate, or a copolymer of acrylonitrile; (2) a thermoplastic resin layer different from the gas-barrier resin; and (3) an adhesive layer disposed between the said gas-barrier resin layer and the said thermoplastic resin layer; wherein the said laminate film is produced by co-extruding the gas-barrier resin, the thermoplastic resin and the adhesive layer composition and irradiating the co-extruded laminate, and wherein the total number of the layers of the laminate film is not less than 3; and wherein (i) the adhesive layer comprises a cross-linked polymer and (ii) the adhesive layer composition consists essentially of 100 parts by weight of a melt-extrudable adhesive resin and 0.1 to 50 parts by weight of a radiation sensitive compound, which is at least one member selected from the group consisting of acryloyl compounds and methacryloyl compounds having each a molecular weight of more than 200 and two to six functional groups.
Claim 3
Dependent Claim
64 words
The heat-resistant and oil-resistant laminate film according to claim 1, wherein the said melt-extrudable resin compirses one or more resins selected from the group consisting of the derivatives of alpha-olefin polymers, copolymers of alpha-olefin and vinyl acetate and derivatives thereof, copolymers of alpha-olefins and an unsatured carboxylic acids and derivatives thereof, and block-copolymers of conjugated dienes and an aromatic vinyl compounds and derivatives thereof.
Claim 4
Dependent Claim
18 words
The heat-resistant and oil-resistant laminate film according to claim 1, wherein the said adhesive layer contains a polymerization-inhibitor.
Claim 5
Dependent Claim
48 words
The heat-resistant and oil-resistant laminate film according to claim 1, wherein the said heat-resistant and oil-resistant laminate film consists of the following five layers in the following order: a thermoplastic resin layer/an adhesive layer cross-linked by radiation/a gas-barrier resin layer/another adhesive layer cross-linked by radiation/another thermoplastic resin layer.
Claim 6
Dependent Claim
20 words
The heat-resistant and oil-resistant laminate film according to claim 1, wherein the said heat-resistant and oil-resistant laminate film is heat-shrinkable.
Claim 7
Dependent Claim
31 words
The heat-resistant and oil-resistant laminate film of claim 1, wherein the said radiation sensitive compound is at least one member selected from the group consisting of triemthylolpropane trimethacrylate, and neopentylglycol dimethacrylated.
Claim 8
Dependent Claim
146 words
A process for preparing a heat-resistant and oil-resistant laminate film) comprising the steps of co-extruding (1) a gas-barrier resin which is a copolymer of vinylidene chloride, a saponfied copolymer of ethylene and vinyl acetate, or a copolymer of acrylonitrile, (2) a thermoplastic resin, and (3) an adhesive composition consisting essentially of 100 parts by weight of a melt-extrudable adhesive resin and 0.1 to 50 parts by weight of radiation-sensitive compound, which is at least one member selected from the group consisting of acryloyl compounds and methacryloyl compounds, each having a molecular weight of more than 200 and two to six functional groups, in a configuration wherein an adhesive layer is disposed between a gas-barrier resin layer and a thermoplastic resin layer, thereby forming a multi-layered laminate consisting of not less than three layers, and irradiating the thus formed multi-layered laminate to cross-link the melt-extrudable adhesive composition.
Claim 9
Dependent Claim
146 words
A process for preparing a heat-resistant and oil-resistant laminate film) comprising the steps of co-extruding (1) a gas-barrier resin which is a copolymer of vinylidene chloride, a saponfied copolymer of ethylene and vinyl acetate, or a copolymer of acrylonitrile, (2) a thermoplastic resin, and (3) an adhesive composition consisting essentially of 100 parts by weight of a melt-extrudable adhesive resin and 0.1 to 50 parts by weight of radiation-sensitive compound, which is at least one member selected from the group consisting of acryloyl compounds and methacryloyl compounds, each having a molecular weight of more than 200 and two to six functional groups, in a configuration wherein an adhesive layer is disposed between a gas-barrier resin layer and a thermoplastic resin layer, thereby forming a multi-layered laminate consisting of not less than three layers, and irradiating the thus formed multi-layered laminate to cross-link the melt-extrudable adhesive composition.
Claim 10
Dependent Claim
61 words
The process according to claim 7, wherein the said melt-extrudable adhesive resin comprises one or more resins selected from the group consisting of the derivatives of alpha-olefin polymers, copolymers of alpha-olefins and vinyl acetate and derivatives thereof, copolymers of alpha-olefins and an unsaturated carboxylic acids and derivatives thereof and block-copolymer of conjugated dienes and an aromatic vinyl compounds and derivatives thereof.
Claim 11
Dependent Claim
14 words
The process according to claim 7, wherein the said adhesive layer contain a polymerization-inhibitor.
Claim 12
Dependent Claim
44 words
The process according to claim 7, wherein the said heat-resistant and oil-resistant laminate film consists of the following five layers in the following order: a thermoplastic resin layer/an adhesive layer cross-linked by radiation/a gas-barrier resin layer/another adhesive layer cross-linked by radiation/another thermoplastic resin layer.
Claim 13
Dependent Claim
21 words
The process according to claim 7, wherein the said multi-layered film thus coextruded is biaxially stretched before being exposed to radiation.
Claim 14
Dependent Claim
36 words
The process for preparing a heat-resistant and oil-resistant laminate film according to claim 7, wherein the said radiation sensitive compound is at least one member selected from the group consisting of trimethylolpropane triemthacrylate and neopentylglycol dimethacrylate.
References Cited (Backward Citations)
FR1372805A
Cited
GB1480204A
Cited
US4104404A
Cited
EP0003635A1
Cited
US4178401A
Cited
GB2040804A
Cited
US4547433A
Cited
US4495249A
Cited
US4525414A
Cited
JPH108280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |