Patent EP0145935A1 successfully refreshed from Google Patents.
EP0148762A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improvements in fibre reinforced moulded plastics articles
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 process for moulding articles of permeable sheet-like fibre-reinforced unconsolidated particulate plastics material which has been bonded together and which includes heating the material to a moulding temperature by the passage of hot temperature air through the sheet and then subjecting it to a moulding process.
Inventors
- 👤 Bronislaw Radvan
- 👤 Anthony John Willis
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 14:58
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/02; B29C35/04; B29B; B29B15/00; B29B15/08; B29B15/10; B29B15/105; B29C67/00; B29C67/20; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/12; B29C70/16; B29C70/18; B29C70/28; B29C70/40; B29C70/42; B29C70/46; B29D; B29D7/00; C; C08; C08J; C08J5/00; C08J5/04; D; D21; D21F; D21F11/00; D21F11/002; B29C35/045; B29K; B29K2105/00; B29K2105/04; B29K2105/045; B29K2105/06; B29K2105/12; B29K2105/25; B29K2105/251; B29K2995/00; B29K2995/0037; B29K2995/0046; B29K2995/0065; B29K2995/0068; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10S428/903
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
46 words
A process for moulding articles of permeable sheet-like fibre-reinforced unconsolidated particulate plastics material which has been bonded together and which includes heating the material to a moulding temperature by the passage of hot temperature air through the sheet and then subjecting it to a moulding process.
Claim 2
Dependent Claim
46 words
A process for moulding articles of permeable sheet-like fibre-reinforced unconsolidated particulate plastics material which has been bonded together and which includes heating the material to a moulding temperature by the passage of hot temperature air through the sheet and then subjecting it to a moulding process.
Claim 3
Dependent Claim
17 words
A process as claimed in claim 1 in which the sheet is moulded into an impermeable article.
Claim 4
Dependent Claim
24 words
A process as claimed in claim 1 in which the sheet is moulded by limited compression in a mould so as to remain permeable.
Claim 5
Dependent Claim
56 words
A process as claimed in claim 1 in which the sheet is moulded by full compression in a mould so as to cause the molten thermoplastics material to wet the fibres, and the mould is then slightly opened to allow the material to expand as a result of the resilience of the fibres and become permeable.
Claim 6
Dependent Claim
24 words
A process as claimed in claims 1 to 4 in which the sheet is impregnated with a liquid thermosetting resin before or after moulding.
Claim 7
Dependent Claim
17 words
A process as claimed in claim 5 in which the thermosetting materials are phenolic and polyester resins.
Claim 8
Dependent Claim
25 words
A process as claimed in claim 6 in which the resins are phenolformaldehyde resin, urea and melamine formaldehyde resins, epoxy resins, unsaturated polyesters and polyurethanes.
Claim 9
Dependent Claim
73 words
A process as claimed in claims 1 to 7 in which the sheet-like material to be moulded comprises 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 80% 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 10
Dependent Claim
34 words
A process as claimed in any one of the preceding claims which includes heating the sheet in an oven in which the sheet is located between open supports through which hot air is passed.
Claim 11
Dependent Claim
19 words
A process as claimed in claim 9 in which the open supports are in the form of support grills.
Claim 12
Dependent Claim
33 words
A process for moulding articles of permeable sheet-like fibre reinforced unconsolidated particulate plastics material which has been bonded together substantially as desribed herein with reference to and as shown in the accompanying drawings.
Claim 13
Dependent Claim
33 words
A process for moulding articles of permeable sheet-like fibre reinforced unconsolidated particulate plastics material which has been bonded together substantially as desribed herein with reference to and as shown in the accompanying drawings.
Claim 14
Dependent Claim
19 words
A fibre reinforced plastics material article made by the process set forth in any one of the preceding claims.
References Cited (Backward Citations)
No citation records indexed.
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