EP0045212A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Heat-recoverable article and process for producing the same
Assignee: Raychem Ltd
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Filing: 1981-07-27
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Granted: —
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Expires: 2001-07-27
Abstract
Abstract A process for the production of a hollow heat-recoverable article provided with a functional insert which comprises: (a) deforming at least part of a body of fusion bondable polymeric material at a temperature below the softening point of the material to render it heat-recoverable, (b) disposing the functional insert in contact with an exposed portion of the body, (c) bonding one or more parts of the body to a substrate of fusion bondable polymeric material to produce the configuration of at least one hollow heat recoverable article with the functional insert located therein, and (d) cross-linking the bond forming parts of the deformed body and the substrate to each other. This provides a highly efficient way of installing the inserts in the recoverable articles.
Inventors
- 👤 Pushpkumar Changani
- 👤 Donald George Peacock
- 👤 David Roberts
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 00:23
CPC Classifications
F; F16; F16L; F16L47/00; F16L47/20; F16L47/22; B; B29; B29C; B29C61/00; B29C61/06; H; H01; H01R; H01R4/00; H01R4/70; H01R4/72; H01R4/723; B29L; B29L2031/00; B29L2031/60; B29L2031/601
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
110 words
A process for the production of a hollow heat-recoverable article provided with a functional insert which comprises (a) deforming at least part of a body of fusion bondable polymeric material at a temperature below the softening point of the material to render it heat-recoverable, b) disposing the functional insert in contact with an exposed portion of the body, (c) bonding one or more parts of the body to a substrate of fusion bondable polymeric material to produce the configuration of at least one hollow heat recoverable article with the functional insert located therein, and (d) cross-linking the bond forming parts of the deformed body and the substrate to each other.
Claim 2
Dependent Claim
110 words
A process for the production of a hollow heat-recoverable article provided with a functional insert which comprises (a) deforming at least part of a body of fusion bondable polymeric material at a temperature below the softening point of the material to render it heat-recoverable, b) disposing the functional insert in contact with an exposed portion of the body, (c) bonding one or more parts of the body to a substrate of fusion bondable polymeric material to produce the configuration of at least one hollow heat recoverable article with the functional insert located therein, and (d) cross-linking the bond forming parts of the deformed body and the substrate to each other.
Claim 3
Dependent Claim
32 words
A process according to claim 1 wherein the body is deformed and bonded to produce at least one tubular article recoverable substantially only in the radial sense relative to its tubular axis.
Claim 4
Dependent Claim
18 words
A process according to claim 1 or 2, wherein the heat-recoverable material is at least 0.1 millimetres thick.
Claim 5
Dependent Claim
22 words
A process according to any of claims 1 to 3 wherein the bonding is effected by fusion of the said polymeric material.
Claim 6
Dependent Claim
45 words
A process according to any of claims 1 to 4 wherein the bond-forming material includes further material in addition to the said body and the said substrate and the cross-linking cross-links the said further material with that of the said body and the said substrate.
Claim 7
Dependent Claim
26 words
A process according to any of the preceding claims, wherein the cross-linking cross-links substantially all of the said polymeric material in addition to the bond-forming material.
Claim 8
Dependent Claim
21 words
A process according to any of the preceding claims wherein the cross-linking is effected after the deforming and bonding steps. -
Claim 9
Dependent Claim
24 words
A process according to any of claims 1 to 6 wherein the cross-linking is effected after the deforming step and during the bonding step.
Claim 10
Dependent Claim
20 words
A process according to any of claims 1 to 7 wherein the bonding step is performed after the deforming step.
Claim 11
Dependent Claim
34 words
A process according to any of the preceding claims, wherein the fusion bondable polymeric material before the cross-linking step has a gel content as measured by test method ANSI/ASTM D2765-68 of less than 5%.
Claim 12
Dependent Claim
29 words
A process according to any of the preceding claims, wherein the said substrate to which part of the said body is bonded is another part of the said body.
Claim 13
Dependent Claim
25 words
A process according to claim 11 wherein the said body is in the form of a web and the deforming step expands the web longitudinally.
Claim 14
Dependent Claim
30 words
A process according to any of claims 1 to 10 wherein the said substrate to which part of the said body is bonded is initially separate from the said body.
Claim 15
Dependent Claim
29 words
. A process according to claim 13 wherein the said body is in the form of a web and the said substrate is in the form of a web.
Claim 16
Dependent Claim
22 words
A process according to claim 14 wherein the deforming step expands the said body longitudinally and the said substrate is similarly expanded.
Claim 17
Dependent Claim
72 words
A process according to any of claims 1 to 15, wherein the deforming step locally deforms at least one region of the said body, the said substrate is locally deformed in at least one region at a temperature below the softening point of the material to render it heat recoverable, and the body is bonded to the substrate with their respective deformed regions co-operating with each other to produce the said article(s).
Claim 18
Dependent Claim
25 words
A process according to any of the preceding claims wherein the functional insert comprises an adhesive,sealant, conductive or semi-conductive composition or a quantity of solder.
Claim 19
Dependent Claim
16 words
A heat-recoverable article produced by a process as defined in any one of the preceding claims.
Claim 20
Dependent Claim
74 words
A heat-recoverable article provided with a functional insert comprising a body of polymeric material which has been deformed at a temperature below the softening point of the material to render the material heat-recoverable, one or more parts of the body being bonded to a substrate of polymeric material to form the said article with the functional insert located therein and the bond-forming parts of the body and the substrate being cross-linked to each other.
Claim 21
Dependent Claim
74 words
A heat-recoverable article provided with a functional insert comprising a body of polymeric material which has been deformed at a temperature below the softening point of the material to render the material heat-recoverable, one or more parts of the body being bonded to a substrate of polymeric material to form the said article with the functional insert located therein and the bond-forming parts of the body and the substrate being cross-linked to each other.
Claim 22
Dependent Claim
94 words
A hollow tubular heat-recoverable article provided with a functional insert comprising a body of polymeric material which has been deformed at a temperature below the softening point of the material to render the material heat-recoverable, one or more parts of the body being bonded to a substrate of polymeric material to form the said article with the functional insert located therein in such arrangement that the article is heat-recoverable substantially only in the radial sense relative to its tubular axis, the bond-forming parts of the body and the substrate being cross-linked to each other.
Claim 23
Dependent Claim
94 words
A hollow tubular heat-recoverable article provided with a functional insert comprising a body of polymeric material which has been deformed at a temperature below the softening point of the material to render the material heat-recoverable, one or more parts of the body being bonded to a substrate of polymeric material to form the said article with the functional insert located therein in such arrangement that the article is heat-recoverable substantially only in the radial sense relative to its tubular axis, the bond-forming parts of the body and the substrate being cross-linked to each other.
Claim 24
Dependent Claim
36 words
An article according to claim 19 or 20 wherein the body and the substrate are fusion bonded to each other or to further material which is cross-linked to the material of the body and the substrate.
Claim 25
Dependent Claim
22 words
An article according to any of claims 19 to 21 in which substantially all of the said polymeric material has been cross-linked.
Claim 26
Dependent Claim
29 words
An article according to any of claims 19 to 22 wherein the substrate to which part of the said body is bonded is another part of the said body.
Claim 27
Dependent Claim
28 words
An article according to any of claims 19 to 21 wherein the substrate to which part of the said body is bonded is discrete from the said body.
Claim 28
Dependent Claim
64 words
An article according to any of claims 19 to 24 wherein the body and the substrate have each been locally deformed in at least one region at a temperature below the softening point of the material to render the material heat-recoverable and are bonded to each other with their respective deformed regions co-operating with each other to provide one or more hollow said articles..
Claim 29
Dependent Claim
27 words
An article according to any of claims 19 to 25 wherein the functional insert comprises an adhesive, sealant, conductive or semi-conductive composition, or a quantity of solder.
Claim 30
Dependent Claim
29 words
An article according to any of claims 19 to 26 wherein the polymeric material in the deformed state has a thickness within the range from 0.1 to 5.0 millimetres.
References Cited (Backward Citations)
No citation records indexed.
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