US4001065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linked olefine-ester tapes
Assignee: Raychem Corp
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Filing: 1975-04-17
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Granted: 1977-01-04
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Expires: 1995-04-17
Abstract
Abstract A process of wrapping a substrate to insulate or protect it, wherein a tape comprising a cross-linked copolymer derived from an ethylenically unsaturated hydrocarbon and a carboxylic acid ester having ethylenic unsaturation is wrapped around the substrate, and subsequently shrunk. Although the tape is cross-linked, it nevertheless fuses sufficiently to bond to itself to form an integral structure. The substrate can if desired be removed, the tape serving as the inner layer to a hose.
Inventors
- 👤 Richard John Penneck
- 👤 Robin James Thomas Clabburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:07
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/06; H01B13/08; B; B29; B29C; B29C53/00; B29C53/80; B29C53/84; B29C53/845; B29C61/00; B29C61/003; B29C61/06; B29C63/00; B29C63/02; B29C63/04; B29C63/08; B29C63/38; B29C63/40; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0853; H01B3/00; H01B3/18; H01B3/30; H01B3/42; H01B3/421; H01B3/425; H01B3/44; H01B3/441; H01B7/00; H01B7/02; H01B7/0241; B29C53/56; B29C53/58; B29K; B29K2023/00; B29L; B29L2007/00; B29L2007/007; C08L2205/00; C08L2205/02; C08L2205/03; C08L23/0869; Y; Y10; Y10S; Y10S264/00; Y10S264/71; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1031
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
73 words
A method of covering a substrate, which comprises applying to the substrate a heat shrinkable tape in overlapping relation, said tape comprising a cross-linked copolymer formed from an ethylenically unsaturated hydrocarbon and a carboxylic acid ester having ethylenic unsaturation said tape having the property of adhesively bonding to itself upon heating, and heating the tape to cause it to shrink about the substrate and the overlapping layers to adhesively bond to each other.
Claim 2
Independent Claim
73 words
A method of covering a substrate, which comprises applying to the substrate a heat shrinkable tape in overlapping relation, said tape comprising a cross-linked copolymer formed from an ethylenically unsaturated hydrocarbon and a carboxylic acid ester having ethylenic unsaturation said tape having the property of adhesively bonding to itself upon heating, and heating the tape to cause it to shrink about the substrate and the overlapping layers to adhesively bond to each other.
Claim 3
Dependent Claim
11 words
The method of claim 1, wherein said tape is longitudinally shrinkable.
Claim 4
Dependent Claim
16 words
The method of claim 1, wherein said tape is longitudinally shrinkable without substantial change in width.
Claim 5
Dependent Claim
22 words
The method of claim 1, wherein said hydrocarbon is selected from the group consisting of ethylene and an α-ethylenically unsaturated aliphatic hydrocarbon.
Claim 6
Dependent Claim
22 words
The method of claim 1, wherein the ester is selected from the group consisting of vinyl acetate, vinyl butyrate and vinyl propionate.
Claim 7
Dependent Claim
24 words
The method of claim 1, wherein the ester is selected from the group consisting of esters of furamic, maleic, itaconic, methacrylic and acrylic acids.
Claim 8
Dependent Claim
12 words
The method of claim 6, wherein the ester is an ethyl ester.
Claim 9
Dependent Claim
12 words
The method of claim 6, wherein the ester is a methyl ester.
Claim 10
Dependent Claim
13 words
The method of claim 1, wherein said copolymer is an ethylene-vinyl acetate copolymer.
Claim 11
Dependent Claim
17 words
The method of claim 1, wherein the tape comprises a blend of at least two such copolymers.
Claim 12
Dependent Claim
23 words
The method of claim 1, wherein the copolymer contains from about 50 to about 90% by weight of units derived from the hydrocarbon.
Claim 13
Dependent Claim
19 words
The method of claim 1, wherein the copolymer contains about 60% by weight of units derived from the hydrocarbon.
Claim 14
Dependent Claim
20 words
The method of claim 1, wherein said tape additionally comprises polymers, tackifying agents, and adhesion-improving agents blended with said copolymer.
Claim 15
Dependent Claim
13 words
The method of claim 1, wherein said copolymer is high energy radiation cross-linked.
Claim 16
Dependent Claim
11 words
The method of claim 1, wherein said copolymer is ultraviolet cross-linked.
Claim 17
Dependent Claim
24 words
The method of claim 1, wherein said tape has been stretched to a length between about 1.25 and about 1.5 times its original length.
Claim 18
Dependent Claim
13 words
The method of claim 1, wherein said tape has been stretched after cross-linking.
Claim 19
Dependent Claim
11 words
The method of claim 1, wherein said tape is under tension.
Claim 20
Dependent Claim
14 words
The method of claim 1 wherein the tape bonds to the substrate upon heating.
Claim 21
Dependent Claim
91 words
A process for the manufacture of a hose, which comprises: applying to a cylindrical mandrel a heat shrinkable tape in overlapping relation, said tape comprising a polymer formed from an ethylenically unsaturated hydrocarbon and a carboxylic acid ester having ethylenic unsaturation, said tape having the property of adhesively bonding to itself upon heating; heating the covered mandrel to cause the tape to shrink about the mandrel and the overlapping layers of the tape to adhesively bond to each other; applying hose-forming components to the covered mandrel; and subsequently removing the mandrel.
Claim 22
Dependent Claim
91 words
A process for the manufacture of a hose, which comprises: applying to a cylindrical mandrel a heat shrinkable tape in overlapping relation, said tape comprising a polymer formed from an ethylenically unsaturated hydrocarbon and a carboxylic acid ester having ethylenic unsaturation, said tape having the property of adhesively bonding to itself upon heating; heating the covered mandrel to cause the tape to shrink about the mandrel and the overlapping layers of the tape to adhesively bond to each other; applying hose-forming components to the covered mandrel; and subsequently removing the mandrel.
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) | 1980-01-04 | 1980-07-05 | 1981-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-04 | 1984-07-05 | 1985-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-04 | 1988-07-05 | 1989-01-04 | $7700.00 | Window Closed / Lapsed |