EP0119725A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Laminates with improved adhesion
Assignee: Raychem Corp
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Filing: 1984-02-13
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Granted: —
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Expires: 2004-02-13
Abstract
Abstract In a laminate comprising adjacent layers composed of incompatible polymers, the adhesion between the layers is enhanced by irradiation of the laminate, and can be further enhanced by high temperature annealing of the irradiated laminate.
Inventors
- 👤 Christine Ellen Vogdes
- 👤 Yutaka Kawazoye
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 13:26
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/304; B32B27/32; B32B27/34; B32B38/00; B32B38/0008; B32B38/0036; B32B2038/0048; B32B2310/00; B32B2310/08; B32B2310/0875
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
102 words
A method of preparing a laminate comprising a first layer composed of a first polymeric composition and an adherent second layer composed of a second polymeric composition which is incompatible with the first polymeric composition, which method comprises (1) preparing a laminate comprising a layer of the first composition and an adjacent layer of the second composition by a process in which the interface between the layers is heated to a temperature which is higher than the melting point of at least one of the polymers in at least one of the compositions; and (2) irradiating the laminate prepared in step (1).
Claim 2
Independent Claim
102 words
A method of preparing a laminate comprising a first layer composed of a first polymeric composition and an adherent second layer composed of a second polymeric composition which is incompatible with the first polymeric composition, which method comprises (1) preparing a laminate comprising a layer of the first composition and an adjacent layer of the second composition by a process in which the interface between the layers is heated to a temperature which is higher than the melting point of at least one of the polymers in at least one of the compositions; and (2) irradiating the laminate prepared in step (1).
Claim 3
Dependent Claim
36 words
A method according to Claim 1 wherein in step (1), the interface is heated to a temperature which is higher than the melting point of at least one of the polymers in each of the compositions.
Claim 4
Dependent Claim
39 words
A method according to claim 1 or 2 which comprises (3) annealing the irradiated laminate at a temperature which is higher than the melting point of at least one of the polymers in at least one of the compositions.
Claim 5
Dependent Claim
36 words
A method according to Claim 3 wherein in step (3), the laminate is annealed at a temperature which is higher than the melting point of at least one of the polymers in each of the compositions.
Claim 6
Dependent Claim
32 words
A method according to Claim 3 or 4 wherein the product of step (3) has a peel strength which is at least twice the peel strength of the product of step (1).
Claim 7
Dependent Claim
28 words
A process according to any one of the preceding claims wherein the first composition comprises at least one polymer which is a fluoropolymer, a polyolefin or a polyamide.
Claim 8
Dependent Claim
14 words
A process according to Claim 6 wherein the first composition also contains an elastomer.
Claim 9
Dependent Claim
14 words
A process according to Claim 6 or 7 wherein the first composition-comprises polyvinylidene fluoride.
Claim 10
Dependent Claim
17 words
A process according to any one of the preceding claims wherein the second composition comprises an elastomer.
Claim 11
Dependent Claim
50 words
A process according to any one of the preceding claims which comprises deforming the irradiated laminate at a temperature which is higher than the melting point of at least one of the polymers in at least one of the compositions, and cooling the deformed laminate, thereby preparing a heat-recoverable article.
References Cited (Backward Citations)
No citation records indexed.
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