EP0102335A1
Expired / Lapsed
EP
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A method for the production of fibre composite materials impregnated with resin
Assignee: Casco Adhesives AB
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Filing: 1983-08-04
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Granted: —
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Expires: 2003-08-04
Abstract
Abstract A method for the production of a composite material in the form of a web, the material comprising fibres, a curable resin and expanded microspheres. A web of fibres and microspheres is formed, and the curable resin is added subsequently.
Inventors
- 👤 Bengt Andersson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 09:33
CPC Classifications
B; B32; B32B; B32B38/00; B32B38/08; B32B5/00; B32B5/18; C; C08; C08J; C08J9/00; C08J9/32; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H21/00; D21H21/50; D21H21/52; D21H21/54; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/06; B32B2262/062; B32B2305/00; B32B2305/74
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
47 words
A method for the production of a composite material in the form of a web, comprising fibres, a curable resin and expanded thermoplastic microspheres, characterized in, that a web of fibres and microspheres is impregnated with the resin and that the resin is at least partially cured.
Claim 2
Independent Claim
47 words
A method for the production of a composite material in the form of a web, comprising fibres, a curable resin and expanded thermoplastic microspheres, characterized in, that a web of fibres and microspheres is impregnated with the resin and that the resin is at least partially cured.
Claim 3
Dependent Claim
41 words
A method according to claim 1, characterized in, that the web is produced by depositing free fibres and free microspheres from a liquid suspension and that the web is at least partly dewatered and that the curable resin is added subsequently.
Claim 4
Dependent Claim
13 words
A method according to claim 2, characterized in, that unexpanded microspheres are added.
Claim 5
Dependent Claim
19 words
A method according to claim 2, characterized in, that the web is dried before the curable resin is added.
Claim 6
Dependent Claim
22 words
A method according to claim 1 or 3, characterized in, that the microspheres are expanded before the addition of the curable resin.
Claim 7
Dependent Claim
17 words
A-method according to claim 1, characterized in, that the resin is cured to the B-stage and dried.
Claim 8
Dependent Claim
23 words
A method according to claim 1, characterized in, that the curable resin is a formaldehyde based resin with phenol, resorcinol, urea or melamine.
Claim 9
Dependent Claim
17 words
A method according to claim 1, characterized in, that a dry web containing unexpanded spheres is impregnated.
Claim 10
Dependent Claim
42 words
A method according to claim 1, characterized in, that the expandable microspheres are added in such an amount, that they after expansion will make up between 50 and 95, and preferably between 70 and 90, per cent by volume of the material.
Claim 11
Dependent Claim
15 words
A method according to claim 1, characterized in, that the added fibres comprise cellulose fibres.
Claim 12
Dependent Claim
18 words
Use of a composite material produced according to any of the claims 1-10 for the manufacture of laminates.
References Cited (Backward Citations)
GB1398308A
Cited
EP0041054A2
Cited
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