US4009312A
Expired / Lapsed
US
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Heat-adhesive film laminate
Assignee: Toyobo Co Ltd
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Filing: 1974-01-23
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Granted: 1977-02-22
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Expires: 1994-01-23
Abstract
Abstract A heat-adhesive film laminate comprising a film of a plastic material having excellent heat resistance such as polyesters, polyamides or polycarbonates laminated on one side of a metal foil such as aluminum foil, copper foil, iron foil or the like and a film of a resin comprising predominantly block copolyester having a melting point of higher than 140° C but lower than the temperature at which the characteristics of the plastic film is deteriorated and a Young's modulus ε (dyne/cm 2 ) and a breaking elongation (Δl/lo) × 100 (%) when measured at 20° C and 100° C being as follows, respectively: 10.sup.7 (dyne/cm.sup.2) < ε < 10.sup.10 (dyne/cm.sup.2) and (Δl/lo) × 100 > 40 (%) laminated on other side of the metal foil.
Inventors
- 👤 Ikuya Hayashi
- 👤 Keiichi Uno
- 👤 Mikio Matsuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:03
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/09; B32B15/088; B32B15/18; B32B15/20; B32B27/00; B32B27/34; B32B27/36; B32B27/365; B32B7/00; B32B7/04; B32B7/12; C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/30; C09J7/35; B32B2307/00; B32B2307/50; B32B2307/514; B32B2307/516; B32B2307/518; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; B32B2323/00; B32B2323/04; B32B2367/00; B32B2369/00; B32B2377/00; B32B2405/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24959; Y10T428/24967; Y10T428/24975; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2848; Y10T428/31504; Y10T428/31507; Y10T428/31678; Y10T428/31681; Y10T428/31725; Y10T428/31765; Y10T428/31786
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
179 words
A heat-adhesive film laminate consisting essentially of (A) a plastic film having excellent heat resistance and a melting point of 200° C or more made from a polyester, polyamide or polycarbonate which is in the form of a non-oriented film, a uniaxially oriented film or a biaxially oriented film, said plastic film being laminated on one side of (B) a metal foil, and (C) a film of a resin comprising predominantly block copolyester selected from the group consisting of polyethylene terephthalate/polytetramethylene oxide block copolymer, polytetramethylene terephthalate/polytetramethylene oxide block copolymer, polyethylene terephthalate.isophthalate/polytetramethylene oxide block copolymer and polytetramethylene terephthalate.isophthalate/polytetramethylene oxide block copolymer, said block copolyester having a melting point higher than 140° C. but at least 20° C. lower than the melting point of the plastic film and a Young's modulus ε (dyne/cm 2 ) and a breaking elongation (Δl/lo) × 100 (%) when measured at 20° C and 100° C being respectively 10.sup.7 (dyne/cm.sup.2) < ε < 10.sup.10 (dyne/ cm.sup.2) and (Δl/lo) × 100 > 40(%), said film of resin being laminated on the other side of the metal foil.
Claim 2
Dependent Claim
179 words
A heat-adhesive film laminate consisting essentially of (A) a plastic film having excellent heat resistance and a melting point of 200° C or more made from a polyester, polyamide or polycarbonate which is in the form of a non-oriented film, a uniaxially oriented film or a biaxially oriented film, said plastic film being laminated on one side of (B) a metal foil, and (C) a film of a resin comprising predominantly block copolyester selected from the group consisting of polyethylene terephthalate/polytetramethylene oxide block copolymer, polytetramethylene terephthalate/polytetramethylene oxide block copolymer, polyethylene terephthalate.isophthalate/polytetramethylene oxide block copolymer and polytetramethylene terephthalate.isophthalate/polytetramethylene oxide block copolymer, said block copolyester having a melting point higher than 140° C. but at least 20° C. lower than the melting point of the plastic film and a Young's modulus ε (dyne/cm 2 ) and a breaking elongation (Δl/lo) × 100 (%) when measured at 20° C and 100° C being respectively 10.sup.7 (dyne/cm.sup.2) < ε < 10.sup.10 (dyne/ cm.sup.2) and (Δl/lo) × 100 > 40(%), said film of resin being laminated on the other side of the metal foil.
Claim 3
Dependent Claim
106 words
A heat-adhesive film laminate according to claim 1, wherein the block copolyester comprises (1) a crystalline polyester segment consisting of polyethylene terephthalate unit, polytetramethylene terephthalate unit, polyethylene terephthalate.isophthalate unit or polytetramethylene terephthalate.isophthalate unit, said crystalline polyester segment having a melting point of 200° C or more when a polymer having fiber-forming properties is produced by the monomer composing the unit alone and having a molecular weight of 400 to 10,000, and (2) a polymer segment consisting of polytetramethylene oxide and having a molecular weight of 400 to 6,000, said polymer segment being included in a ratio of 5 to 80% by weight in the block copolyester.
Claim 4
Dependent Claim
38 words
A heat-adhesive film laminate according to claim 2, wherein the crystalline polyester segment consists of polyethylene terephthalate.isophthalate unit or polytetramethylene terephthalate.isophthalate unit and includes 70 or more % by weight of ethylene terephthalate unit or tetramethylene terephthalate unit.
Claim 5
Dependent Claim
27 words
The heat-adhesive film laminate according to claim 2, wherein the polymer segment is included in a range of 10 to 60% by weight in the block copolyester.
Claim 6
Dependent Claim
79 words
The heat-adhesive film laminate according to claim 2, wherein the plastic film is a biaxially oriented polyethylene terephthalate film having a thickness of 10 to 30 μ, the metal foil is an aluminum foil having a thickness of 10 to 30 μ and the film of resin has a thickness of 30 to 70 μ made from polytetramethylene terephthalate/polytetramethylene oxide block copolymer containing 20 to 50% by weight of polytetramethylene oxide having a molecular weight of 400 to 3,000.
Claim 7
Dependent Claim
76 words
The heat-adhesive film laminate according to claim 2, wherein the plastic film is polyethylene terephthalate film having a thickness of 10 to 30 μ, the metal foil is an aluminum foil having a thickness of 10 to 30 μ and the film of resin has a thickness of 30 to 70 μ made from polytetramethylene terephthalate.isophthalate/polytetramethylene oxide block copolymer containing 20 to 50% by weight of polytetramethylene oxide having a molecular weight of 400 to 3,000.
Claim 8
Dependent Claim
74 words
A heat-adhesive film laminate according to claim 1 which comprises (A) a plastic film having a thickness of 10 to 500μ, (B) a metal foil selected from the group consisting of aluminum foil, copper foil, iron foil and a foil in which a plastic material is inserted within the metal foil, said metal foil having a thickness of 10 to 100μ, and (C) a block copolyester film having a thickness of 30 to 500μ.
Claim 9
Dependent Claim
82 words
A heat-adhesive film laminate according to claim 7 which comprises (A) a plastic film consisting of a biaxially oriented polyester, polyamide or polycarbonate film having a thickness of 10 to 30 μ, (B) an aluminum foil having a thickness of 10 to 30 μ, and (C) a block copolyester film having a thickness of 30 to 70 μ made from polytetramethylene terephthalate/polytetramethylene oxide block copolymer containing 20 to 50% by weight of polytetramethylene oxide having a molecular weight of 400 to 3,000.
Claim 10
Dependent Claim
82 words
The heat-adhesive film laminate according to claim 7 which comprises (A) a plastic film consisting of a biaxially oriented polyester, polyamide or polycarbonate film having a thickness of 10 to 30 μ, (B) an aluminum foil having a thickness of 10 to 30 μ, and (C) a block copolyester film having a thickness of 30 to 70 μ made from polytetramethylene terephthalate.isophthalate/polytetramethylene oxide block copolymer containing 20 to 50% by weight of polytetramethylene oxide having a molecular weight of 400 to 3,000.
Claim 11
Dependent Claim
39 words
The heat-adhesive film laminate according to claim 1, wherein the metal foil is selected from the group consisting of aluminum foil, copper foil, iron foil and a foil in which a plastic material is inserted within the metal foil.
Claim 12
Dependent Claim
44 words
The heat-adhesive film laminate according to claim 1, wherein the plastic film has a thickness of 10 to 500 μ, the metal foil has a thickness of 10 to 100 μ and the block copolyester film has a thickness of 30 to 500 μ.
Claim 13
Dependent Claim
44 words
The heat-adhesive film laminate according to claim 11, wherein the plastic film has a thickness of 10 to 30 μ, the metal foil has a thickness of 10 to 30 μ and the block copolyester film has a thickness of 30 to 70 μ.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |