Patent US4092452A successfully refreshed from Google Patents.
US4092452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic laminated metallic foil and method for preparing the same
Assignee: Nitto Denko Corp
•
Filing: 1975-03-03
•
Granted: 1978-05-30
•
Expires: 1995-03-03
Abstract
Abstract A plastic laminated metallic foil is prepared by laminating a first layer of a polymer selected from the group consisting of ethylene-unsaturated carboxylic acid copolymers, ethylene-unsaturated carboxylic acid ester copolymers, ethylene-unsaturated carboxylic acid-unsaturated carboxylic acid-ester ternary copolymers, ionomers containing these copolymers as the base, and graft copolymers of polyethylene and unsaturated carboxylic acids on at least one surface of a metallic foil, and further laminating a second layer of a polymer selected from the group consisting of polyethylene, ethylene-vinyl acetate copolymers, ethylene-unsaturated carboxylic acid ester copolymers, and graft copolymers of polyethylene and unsaturated carboxylic acid esters onto the first polymer layer of the metallic foil.
Inventors
- 👤 Yutaka Hori
- 👤 Zenzo Honda
- 👤 Kenji Suzuki
- 👤 Keiji Nakamoto
- 👤 Yoshiharu Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:59
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/06; H01B13/10; H01B13/103; B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; H01B11/00; H01B11/02; H01B11/06; H01B11/10; H01B11/1016; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
284 words
A plastic laminated metallic foil useful as an electrostatic shiledling layer and moisture-proofing layer for cables consisting essentially of: (a) a metallic foil composed of a member selected from the group consisting of aluminum, copper, iron, steel, silver, gold and tin; (b) a first layer of an ionomer having a molecular weight of from 10,000 to 50,000 consisting essentially of a base copolymer selected only from the group consisting of (1) ethylene-unsaturated carboxylic acid copolymers containing from 50 to 98 weight % ethylene and from 50 to 2% acid, and (2) ethylene-unsaturated carboxylic acid-unsaturated carboxylic acid ester ternary copolymers containing from 50 to 98 weight % ethylene and from 50 to 2 weight % of the acid and ester wherein no more than 20 weight %, based upon the weight of ethylene, of the ester is present in said ternary copolymer; and (c) a second layer of a polymer having a molecular weight of from 10,000 to 50,000 consisting essentially of a member selected only from the group consisting of ethylene-vinyl acetate copolymers containing no more than 30 weight % vinyl acetate, and ethylene-unsaturated carboxylic acid ester copolymers containing no more than 95 weight % of the ester; said first layer being laminated onto and bonded to at least one surface of said metallic foil and said second layer being further laminated onto and bonded to the outer surface of the laminated first layer, said second layer being characterized by adhesivity toward said first layer and toward polyolefin of the type used for jacketing conductive cables, the total thickness of the first and second layers ranging from 45 to 75 microns, and the thickness of said second layer ranging from 20 to 30 microns.
Claim 2
Dependent Claim
284 words
A plastic laminated metallic foil useful as an electrostatic shiledling layer and moisture-proofing layer for cables consisting essentially of: (a) a metallic foil composed of a member selected from the group consisting of aluminum, copper, iron, steel, silver, gold and tin; (b) a first layer of an ionomer having a molecular weight of from 10,000 to 50,000 consisting essentially of a base copolymer selected only from the group consisting of (1) ethylene-unsaturated carboxylic acid copolymers containing from 50 to 98 weight % ethylene and from 50 to 2% acid, and (2) ethylene-unsaturated carboxylic acid-unsaturated carboxylic acid ester ternary copolymers containing from 50 to 98 weight % ethylene and from 50 to 2 weight % of the acid and ester wherein no more than 20 weight %, based upon the weight of ethylene, of the ester is present in said ternary copolymer; and (c) a second layer of a polymer having a molecular weight of from 10,000 to 50,000 consisting essentially of a member selected only from the group consisting of ethylene-vinyl acetate copolymers containing no more than 30 weight % vinyl acetate, and ethylene-unsaturated carboxylic acid ester copolymers containing no more than 95 weight % of the ester; said first layer being laminated onto and bonded to at least one surface of said metallic foil and said second layer being further laminated onto and bonded to the outer surface of the laminated first layer, said second layer being characterized by adhesivity toward said first layer and toward polyolefin of the type used for jacketing conductive cables, the total thickness of the first and second layers ranging from 45 to 75 microns, and the thickness of said second layer ranging from 20 to 30 microns.
Claim 3
Dependent Claim
16 words
The plastic laminated metallic foil of claim 1, wherein said metallic foil is composed of aluminum.
Claim 4
Dependent Claim
33 words
The plastic laminated metallic foil of claim 1, wherein said unsaturated carboxylic acid is an unsaturated aliphatic carboxylic acid containing 2-12 carbon atoms other than those carbon atoms contained in its carboxyl group.
Claim 5
Dependent Claim
28 words
The plastic laminated metallic foil of claim 3, wherein said unsaturated carboxylic acid is a member selected from the group consisting of a mono- and divalent carboxylic acid.
Claim 6
Dependent Claim
30 words
The plastic laminated metallic foil of claim 1, wherein said unsaturated carboxylic acid is one selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, and maleic anhydride.
Claim 7
Dependent Claim
16 words
The plastic laminated metallic foil of claim 1, wherein said unsaturated carboxylic acid is acrylic acid.
Claim 8
Dependent Claim
38 words
The plastic laminated metallic foil of claim 1, wherein the amount of ethylene and the carboxylic acid in said ethylene-unsaturated carboxylic acid copolymers ranges from 70 to 90% by weight and from 30 to 10% by weight, respectively.
Claim 9
Dependent Claim
46 words
The plastic laminated metallic foil of claim 1, wherein said unsaturated carboxylic ester is a member selected from the group consisting of ethyl, propyl, and butyl esters of an aliphatic unsaturated acid containing 2-12 carbon atoms, other than those carbon atoms contained in its carboxyl group.
Claim 10
Dependent Claim
24 words
The plastic laminated metallic foil of claim 8, wherein said unsaturated carboxylic ester is the ester of a mono- or divalent unsaturated carboxylic acid.
Claim 11
Dependent Claim
26 words
The plastic laminated metallic foil of claim 8, wherein said unsaturated carboxylic ester is a member selected from the group consisting of acrylic and methacrylic esters.
Claim 12
Dependent Claim
16 words
The plastic laminated metallic foil of claim 8, wherein said unsaturated carboxylic ester is ethyl acrylate.
Claim 13
Dependent Claim
27 words
The plastic laminated metallic foil of claim 1, wherein said ionomer contains a metal ion selected from the group consisting of magnesium, strontium, sodium, and zinc ions.
Claim 14
Dependent Claim
30 words
The plastic laminated metallic foil of claim 12, wherein said ionomer consists essentially of an ethylene acrylic acid copolymer as said base and a zinc ion as said metal ion.
Claim 15
Dependent Claim
29 words
The plastic laminated metallic foil of claim 15, wherein said ionomer consists essentially of an ethylene-acrylic acid copolymer as said base and a sodium ion as said metal ion.
Claim 16
Dependent Claim
26 words
The plastic laminated metallic foil of claim 1, wherein said ethylene-vinyl acetate copolymer has a vinyl acetate content which ranges from 2 to 20% by weight.
Claim 17
Dependent Claim
28 words
The plastic laminated metallic foil of claim 1, wherein said ethylene-unsaturated carboxylic ester copolymer has an unsaturated carboxylic ester content which ranges from 1 to 95% by weight.
Claim 18
Dependent Claim
29 words
The plastic laminated metallic foil according to claim 16, wherein said ethylene-unsaturated carboxylic ester copolymer has an unsaturated carboxylic ester content which ranges from 1 to 85% by weight.
Claim 19
Dependent Claim
22 words
The plastic laminated metallic foil of claim 1, wherein the surface of the first polymer layer is subjected to an adhesion treatment.
Claim 20
Dependent Claim
17 words
The plastic laminated metallic foil of claim 18, wherein the adhesion treatment is perfected through Corona discharge.
Claim 21
Dependent Claim
18 words
The plastic laminated metallic foil of claim 18, wherein the adhesion treatment is perfected through an oxidizing flame.
Claim 22
Dependent Claim
17 words
The plastic laminated metallic foil of claim 18, wherein the adhesion treatment is perfected through chromic acid.
Claim 23
Dependent Claim
19 words
The plastic laminated metallic foil of claim 1, wherein the thickness of the metallic foil ranges from 100-250 μ.
Claim 24
Dependent Claim
18 words
The plastic laminated metallic foil of claim 1, wherein said first and second layers comprise simultaneously extruded layers.
Claim 25
Dependent Claim
18 words
The plastic laminated metallic foil of claim 23, wherein said first and second layers are thermally pressed together.
Claim 26
Dependent Claim
60 words
The plastic laminated metallic foil of claim 1 consisting essentially of said metallic foil and, on only one surface thereof, said first and said second layers, said second layer being in intimate contact with and strongly bonded to said first layer and said first layer being in intimate contact with and strongly bonded to said surface of said metallic foil.
Claim 27
Dependent Claim
68 words
The plastic laminated metallic foil of claim 1 consisting essentially of said first and said second layers on both surfaces of said metallic foil, each of said second layers being in intimate contact with and strongly bonded to each of said first layers and each of said first layers being in turn in intimate contact with and strongly bonded to both of said surfaces of said metallic foil.
Claim 28
Dependent Claim
35 words
The plastic laminated metallic foil of claim 1 wherein said base copolymer of said ionomer is said ethylene-unsaturated carboxylic acid copolymer and said polymer of said second layer is said ethylene-unsaturated carboxylic acid ester copolymer.
References Cited (Backward Citations)
US3264272A
Cited
US3359154A
Cited
US3233036A
Cited
US3459877A
Cited
US3347419A
Cited
US3505143A
Cited
US3507978A
Cited
US3619242A
Cited
US3547682A
Cited
US3687748A
Cited
US3681515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |