Patent US5358680A successfully refreshed from Google Patents.
US5358680A
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US
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Process for manufacturing a composite product by moulding
Assignee: Saint Gobain Adfors SAS
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Filing: 1992-11-06
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Granted: 1994-10-25
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Expires: 2012-11-06
Abstract
Abstract The process of manufacturing a thermoplastic organic material containing reinforcing fibers and optionally mineral materials and organic additives by combining the fibers and materials in an extruder, and introducing at least some of the organic material into the extruder in the form of continuous filaments or fibers.
Inventors
- 👤 Philippe Boissonnat
- 👤 Dominique Loubinoux
- 👤 Giordano Roncato
- 👤 Robert Fedorowsky
- 👤 Guy Zanella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:35
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/42; B29C; B29C45/00; B29C45/0005; B29B7/58; B29B7/60; B29B7/80; B29B7/84; B29B7/845; B29B7/88; B29B7/90; B29C45/17; B29C45/18; B29C45/1816; B29C48/00; B29C48/022; B29C48/25; B29C48/285; B29C48/297; B29C48/36; B29C48/50; B29C48/505; B29C48/535; B29C48/76; B29C48/765; B29C48/766; B29C48/03; B29C48/288; B29C48/2886; B29C48/2888; B29K; B29K2105/00; B29K2105/06; B29K2105/08; Y; Y10; Y10S; Y10S264/00; Y10S264/911; Y10S264/913; Y10S264/92
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
90 words
A process for manufacturing a composite product comprising a thermoplastic organic material and reinforcing fibers, wherein said product is obtained by extrusion or injection molding of a blend of said thermoplastic organic material and reinforcing fibers from an extruder, said process comprising the step of introducing at least some of the thermoplastic organic material into the extruder in the form of separate continuous filaments or fibers formed thereof, wherein the diameter of said filaments is between 10 and 50 microns to provide rapid melt homogenization and reduced reinforcing fiber fragmentation.
Claim 2
Dependent Claim
90 words
A process for manufacturing a composite product comprising a thermoplastic organic material and reinforcing fibers, wherein said product is obtained by extrusion or injection molding of a blend of said thermoplastic organic material and reinforcing fibers from an extruder, said process comprising the step of introducing at least some of the thermoplastic organic material into the extruder in the form of separate continuous filaments or fibers formed thereof, wherein the diameter of said filaments is between 10 and 50 microns to provide rapid melt homogenization and reduced reinforcing fiber fragmentation.
Claim 3
Dependent Claim
13 words
The process according to claim 1 wherein the reinforcing fibers are glass fibers.
Claim 4
Dependent Claim
32 words
Process according to claim 1, comprising the step of introducing the continuous thermoplastic organic material fibres or filaments and the reinforcing fibres into the extruder via a common inlet in the extruder.
Claim 5
Dependent Claim
22 words
Process according to claim 3, comprising the step of introducing the reinforcing fibres into the extruder in the form of cut fibres.
Claim 6
Dependent Claim
49 words
Process according to claim 3, comprising the step of supplying the extruder with said continuous thermoplastic organic material fibres taken from at least one of a plurality of rolls, and further supplying the extruder with continuous reinforcing fibres taken from at least one of a plurality of other rolls.
Claim 7
Dependent Claim
50 words
Process according to claim 1, comprising the step of introducing the continuous thermoplastic organic material fibres or filaments and reinforcing fibres, in a form of continuous fibres, into the extruder via two different inlets in the extruder the latter fibres being introduced downstream of the inlet of the former fibres.
Claim 8
Dependent Claim
32 words
Process according to claim 1, comprising the step of feeding the extruder with at least one composite fibre formed by a combination of continuous glass filaments and continuous thermoplastic organic material filaments.
Claim 9
Dependent Claim
37 words
Process according to claim 7, comprising the step of feeding the extruder with at least one composite fibre, of which some of the thermoplastic organic material is in the form of a layer covering said composite fibre.
Claim 10
Dependent Claim
32 words
Process according to claim 7, comprising the step of feeding the extruder with at least one composite fibre of which all the thermoplastic organic material is in the form of continuous filaments.
Claim 11
Dependent Claim
42 words
Process according to any one of claims 6 to 8, comprising the step of feeding the extruder solely with composite fibre of which the respective proportions of thermoplastic organic material and glass correspond to those of the composite object to be produced.
Claim 12
Dependent Claim
44 words
The process according to claim 1 comprising the step of introducing the thermoplastic organic material into the extruder partly in the form of granules and partly in the form of continuous fibers or filaments, the fibers or filaments being introduced downstream of the granules.
Claim 13
Dependent Claim
24 words
Process according to claim 11, wherein at least some of the thermoplastic organic material granules introduced into the extruder are granules comprising glass fibres.
Claim 14
Dependent Claim
26 words
Process according to claim 12, wherein at least some of the granules comprising the glass fibres are granules resulting from the crushing of waste composite objects.
Claim 15
Dependent Claim
21 words
Process according to claim 1, comprising the step of coloring at least some of the thermoplastic organic material with an additive.
Claim 16
Dependent Claim
24 words
The process according to claim 1, wherein the composite product formed is a rod which can be cut into granules reinforced with glass fibers.
Claim 17
Dependent Claim
21 words
The process according to claim 1 wherein the composite product formed by extrusion is a profiled object reinforced with glass fibers.
Claim 18
Dependent Claim
21 words
The process according to claim 1 wherein the composite product formed by injection molding is an object reinforced with glass fibers.
Claim 19
Dependent Claim
27 words
The process according to claim 1 wherein substantially all of the thermoplastic organic material is added to the extruder in the form of continuous filaments or fibers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-10-24 | 1998-04-25 | 1998-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-24 | 2002-04-25 | 2002-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-24 | 2006-04-25 | 2006-10-25 | $7700.00 | Window Closed / Lapsed |