EP0152994A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fibre reinforced composite plastics material
Assignee: Wiggins Teape Group Ltd
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Filing: 1985-01-03
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Granted: —
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Expires: 2005-01-03
Abstract
Abstract A fibre reinforced plastics structure comprising a porous matrix of thermoplastics material and reinforcing fibres, the pores of said matrix being wholly or partly invested with a thermosetting plastics material.
Inventors
- 👤 Bronislaw Radvan
- 👤 Andrew Till
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 18:13
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/18; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29B; B29B15/00; B29B15/08; B29B15/10; B29B15/105; B29C67/00; B29C67/20; B29C70/12; B29C70/16; B29C70/18; B29C70/28; B29C70/40; B29C70/42; B27; B27N; B27N3/00; B27N3/04; B29K; B29K2101/00; B29K2101/10; B29K2105/00; B29K2105/04; B29K2105/045; B29K2105/06; B29K2105/12; B29K2105/16; B29K2995/00; B29K2995/0018; B29K2995/0022; B29K2995/0037; B29K2995/0065; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249953; Y10T428/249955; Y10T428/249956; Y10T428/249986; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/273
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
30 words
A fibre reinforced plastics structure comprising a porous matrix of thermoplastics material and reinforcing fibres, the pores of said matrix being wholly or partly invested with a thermosetting plastics material.
Claim 2
Dependent Claim
30 words
A fibre reinforced plastics structure comprising a porous matrix of thermoplastics material and reinforcing fibres, the pores of said matrix being wholly or partly invested with a thermosetting plastics material.
Claim 3
Dependent Claim
37 words
A method of forming a fibre reinforced plastics structure as claimed in claim 1 comprising the steps of forming a porous matrix of thermoplastics material and reinforcing fibres, and investing the matrix with a thermosetting plastics material.
Claim 4
Dependent Claim
82 words
A method of making a fibre reinforced plastics structure as claimed in claim 2 in which the porous matrix is formed as an open fibrous structure comprising 20% to 60% by weight of reinforcing fibres having a high modulus of elasticity (as herein defined), and being between about 7 and 50 millimetres long, and 40% to 60% by weight of wholly or substantially unconsolidated particulate plastics material, and in which the fibrous and plastics components are bonded into an air permeable structure.
Claim 5
Dependent Claim
54 words
A method of making a fibre reinforced plastics structure as claimed in claim 2 in which the porous matrix is formed by incorporating blowing agents in the structure of the thermoplastics material and reinforcing fibres to cause it to expand and become porous when heat and pressure are applied in sequence and then removed.
Claim 6
Dependent Claim
55 words
A method of making a fibre reinforced plastics structure as claimed in claim 2 in which the porous matrix is formed by a fibre reinforced thermoplastics material which has been consolidated by heating and cooling under pressure and then reheated to cause the resilience of the fibres to re-expand it and render the sheet porous.
Claim 7
Independent Claim
33 words
A method of making a fibre reinforced plastics structure as claimed in any one of claims 2 to 5 in which the matrix is completely impregnated or invested with thermosetting liquid plastics material.
Claim 8
Independent Claim
35 words
A method of making a fibre reinforced plastics structure as claimed in any one of claims 2 to 5 in which only the surface layers of the matrix are impregnated with the thermosetting plastics material.
Claim 9
Independent Claim
43 words
A method of making a fibre reinforced plastics structure as claimed in any one of preceding claims 2 to 7 in which an excess of liquid thermosetting plastics material is applied to the surface of the matrix to provide a smooth glossy appearance.
Claim 10
Independent Claim
59 words
A method of making a fibre reinforced plastics structure as claimed in any one of preceding claims 2 to 8 in which a low temperature curing liquid resin is used to impregnate the matrix which is then stored to enable curing of the resin to proceed slowly at room temperature considerably below the softening point of the thermoplastics material.
Claim 11
Independent Claim
68 words
A method of making a fibre reinforced plastics structure as claimed in any one of preceding claims 2 to 8 in which the porous matrix is initially impregnated with a relatively slow curing thermosetting resin, is then heated rapidly to the moulding temperature of the thermoplastics component, rapidly transferred to a moulding press and pressed into a desired shape before the curing of the thermosetting component is complete.
Claim 12
Independent Claim
61 words
A method of making a fibre reinforced plastics structure as claimed in any one of preceding claims 2 to 8 in which a thin porous fibre reinforced thermoplastics matrix is fully impregnated with the thermosetting resin, heated to a moulding temperature of the thermoplastics material and laminated with one or more hot impregnated sheets and then formed in a hot press.
Claim 13
Dependent Claim
42 words
A method of making a fibre reinforced plastics structure as claimed in claim 11 in which a further impregnated sheet is added to the other side of the impregnated sheet or sheets which form an unimpregnated core in the article when formed.
Claim 14
Independent Claim
34 words
A method of making a fibre reinforced plastics structure as claimed in claims 2 to 5 in which the thermosetting plastics material carried on a film or sheet which is applied to the matrix.
Claim 15
Dependent Claim
43 words
A method of making a fibre reinforced plastics ol structure as claimed in claim 13 in which the thermosetting plastics material is located on a film or sheet of thermoplastics material which is then applied to the matrix and then heated and pressed.
Claim 16
Dependent Claim
40 words
A method of making a fibre reinforced plastics structure as claimed in claim 13 in which a partly gelled or high viscosity resin is coated on the film or sheet which is then applied to a hot matrix and pressed.
Claim 17
Independent Claim
19 words
A method of making a fibre reinforced plastics structure as set forth in Examples 1 to 6 described herein.
Claim 18
Independent Claim
19 words
A method of making a fibre reinforced plastics structure as set forth in Examples 1 to 6 described herein.
Claim 19
Dependent Claim
19 words
A fibre reinforced plastics structure substantially as described herein with reference to and as shown in the accompanying drawings.
Claim 20
Dependent Claim
19 words
A fibre reinforced plastics structure substantially as described herein with reference to and as shown in the accompanying drawings.
Claim 21
Independent Claim
23 words
A method of making a fibre reinforced plastics structure substantially as described herein with reference to an as shown in the accompanying drawings.
Claim 22
Independent Claim
23 words
A method of making a fibre reinforced plastics structure substantially as described herein with reference to an as shown in the accompanying drawings.
Claim 23
Dependent Claim
27 words
A sheet or articles formed from a plastics structure as set forth in claim 1 or claim 13 in which the thermosetting plastics material has been cured.
References Cited (Backward Citations)
No citation records indexed.
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