Patent US3964451A successfully refreshed from Google Patents.
Patent US4359502A successfully refreshed from Google Patents.
US4359502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for joining heat-recoverable sheet material and resulting article
Assignee: Raychem Corp
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Filing: 1979-11-01
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Granted: 1982-11-16
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Expires: 1999-11-01
Abstract
Abstract The ends of heat-recoverable polymeric sheet material are joined by overlapping the ends and bonding them together by means of a laminar panel comprising a layer of a crosslinked hot-melt adhesive coated on one surface of a reinforced polymer layer. The panel has a width approximately that of the sheet material being joined. The panel is disposed, adhesive side down, so that approximately half of its adhesive coated surface contacts the sheet material on either side of the line defined by the uppermost of the overlapping ends. The panel is heated to activate the adhesive and form a secure bond joining the ends. Heat-recoverable sleeves can be made by joining the opposing ends of a single length of heat-recoverable sheet material.
Inventors
- 👤 Dennis A. Caponigro
- 👤 Eugene F. Lopes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:26
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/08; H02G15/18; H02G15/1806; H02G15/1813; B; B32; B32B; B32B27/00; B32B27/12; C; C09; C09J; C09J5/00; C09J5/06; F; F16; F16L; F16L47/00; F16L47/02; Y; Y10; Y10S; Y10S138/00; Y10S138/01; Y10T; Y10T428/00; Y10T428/24; Y10T428/24777; Y10T428/28; Y10T428/2809; Y10T428/2848; Y10T428/2852; Y10T428/2878; Y10T428/2891; Y10T442/00; Y10T442/20; Y10T442/2738; Y10T442/2754; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
55 words
An article of manufacture comprising: (a) a polymer layer having associated therewith a reinforcing member and (b) an adhesive coating comprising a mixture of a normally adhesive heat softenable polymer and an aromatic tackifier, said coating being on one surface of said reinforced polymer layer said reinforced polymer and said adhesive polymer having been crosslinked.
Claim 2
Dependent Claim
55 words
An article of manufacture comprising: (a) a polymer layer having associated therewith a reinforcing member and (b) an adhesive coating comprising a mixture of a normally adhesive heat softenable polymer and an aromatic tackifier, said coating being on one surface of said reinforced polymer layer said reinforced polymer and said adhesive polymer having been crosslinked.
Claim 3
Dependent Claim
23 words
An article according to claim 1 wherein said adhesive polymer is a copolymer of ethylene and at least one monoolefinically unsaturated polar comonomer.
Claim 4
Dependent Claim
38 words
An article according to claim 2 wherein the comonomer is selected from monoolefinically unsaturated acids, vinyl esters of alkanoic acids, vinyl esters of aromatic acids, alkyl esters of monoolefinically unsaturated acids and aryl esters of monoolefinically unsaturated acids.
Claim 5
Dependent Claim
15 words
An article according to claim 3 wherein the tackifier is a phenol modified coumarone-indene resin.
Claim 6
Dependent Claim
18 words
An article according to claim 4 wherein the adhesive polymer is a copolymer of ethylene and ethyl acrylate.
Claim 7
Dependent Claim
10 words
An article according to claim 5 crosslinked by ionizing radiation.
Claim 8
Dependent Claim
15 words
An article according to claim 6 crosslinked by from about 5-30 megarads of ionizing radiation.
Claim 9
Dependent Claim
10 words
An article according to claim 1 crosslinked by ionizing radiation.
Claim 10
Dependent Claim
14 words
An article according to claim 1 wherein the reinforcing member is a foraminous member.
Claim 11
Dependent Claim
14 words
An article according to claim 9 wherein said foraminous member is a woven cloth.
Claim 12
Dependent Claim
12 words
An article according to claim 10 wherein said cloth is glass cloth.
Claim 13
Dependent Claim
22 words
An article according to claim 1 wherein said reinforced polymer layer comprises a laminant of the reinforcing member between two polymer sublayers.
Claim 14
Dependent Claim
14 words
An article according to claim 12 wherein said reinforcing member is woven glass cloth.
Claim 15
Dependent Claim
13 words
An article according to claim 12 wherein said sublayers are layers of polyethylene.
Claim 16
Dependent Claim
10 words
An article according to claim 12 crosslinked by ionizing radiation.
Claim 17
Dependent Claim
24 words
An article according to claim 1 further comprising bands of pressure sensitive tape coated on said adhesive layer along parallel edges of said article.
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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) | 1985-11-15 | 1986-05-17 | 1986-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-15 | 1990-05-17 | 1990-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-15 | 1994-05-17 | 1994-11-16 | $7700.00 | Window Closed / Lapsed |