Patent US4451539A successfully refreshed from Google Patents.
US4451539A
Expired / Lapsed
US
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Surfacing foils for coating plastics parts
Assignee: Arjomari Prioux SA
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Filing: 1982-06-28
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Granted: 1984-05-29
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Expires: 2002-06-28
Abstract
Abstract The present invention relates to semi-finished products in sheet or surfacing foil form for producing thermoplastic coatings with particular properties on finished parts produced by thermoforming or molding-stamping thermoplastic materials in plate or sheet form. These are constituted by: a basic mixture comprising 15%-95% by weight of reinforcing fiber, 85%-5% by weight of powder of at least one thermoplastic material, and, relative to this mixture, 2%-20% by weight of polyolefine dough, 1%-30% by weight of a binder, 0.2%-10% by weight of at least one floculant and if necessary a dispersing agent. These surfacing foils are characterized in that they contain: from 30 to 90% by weight of at least one polyolefine dough, from 2 to 15% by weight of binder, from 0.5 to 5% by weight of at least one floculant, the rest of the materials being composed of at least one powder element selected from among thermoplastics, fillers and pigments.
Inventors
- 👤 Antoine Vallee
- 👤 Michel Goguelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:22
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/32; B29; B29C; B29C51/00; B29C51/16; B29C51/162; B29C70/00; B29C70/003; D; D21; D21H; D21H13/00; D21H13/10; D21H13/12; D21H13/14; B29K; B29K2309/00; B29K2309/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31928
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
65 words
A surfacing foil composition for coating a plastic article which foil comprises from 30% to 90% by weight of at least one polyolefin dough; from 2% to 15% by weight of a binder; 0.5% to 5% by weight by at least one flocculant and the remainder comprising at least one powder element selected from the group consisting of thermoplastics, thermoplastic elastomers, fillers, carbon and pigments.
Claim 2
Dependent Claim
65 words
A surfacing foil composition for coating a plastic article which foil comprises from 30% to 90% by weight of at least one polyolefin dough; from 2% to 15% by weight of a binder; 0.5% to 5% by weight by at least one flocculant and the remainder comprising at least one powder element selected from the group consisting of thermoplastics, thermoplastic elastomers, fillers, carbon and pigments.
Claim 3
Dependent Claim
82 words
The surfacing foil composition of claim 1 wherein the polyolefin dough comprises a mixture of polyethylene and polypropylene; the binder is a 40-55% aqueous dispersion of a polymer containing 87 to 90 parts by weight of ethyl acrylate units, 1 to 8 parts by weight of acrylonitrile units, 1 to 8 parts of N-methylolacrylamide units and 1 to 6 parts by weight of acrylate acid units; the flocculant is aluminum sulphate; and the powder element contains glass fiber, polypropylene powder, and talc.
Claim 4
Dependent Claim
132 words
An improved plastic article which comprises 15% to 95% by weight of reinforcing fibers; 5% to 85% by weight of a powder of at least one thermoplastic material and, with respect to this mixture, 2% to 20% by weight of a polyolefine dough; 1% to 30% by weight of a binder and 0.2 to 10% by weight of at least one flocculant, wherein the improvement comprises: a coating on the article, said coating being an attached surfacing foil which comprises; from 30% to 90% by weight of at least one polyolefin dough; from 2% to 15% by weight of a binder; 0.5% to 5% by weight of at least one flocculant and remainder comprising at least one powder element selected from the group consisting of thermoplastics, thermoplastic elastomers, fillers, carbon and pigments.
Claim 5
Dependent Claim
132 words
An improved plastic article which comprises 15% to 95% by weight of reinforcing fibers; 5% to 85% by weight of a powder of at least one thermoplastic material and, with respect to this mixture, 2% to 20% by weight of a polyolefine dough; 1% to 30% by weight of a binder and 0.2 to 10% by weight of at least one flocculant, wherein the improvement comprises: a coating on the article, said coating being an attached surfacing foil which comprises; from 30% to 90% by weight of at least one polyolefin dough; from 2% to 15% by weight of a binder; 0.5% to 5% by weight of at least one flocculant and remainder comprising at least one powder element selected from the group consisting of thermoplastics, thermoplastic elastomers, fillers, carbon and pigments.
Claim 6
Dependent Claim
87 words
The plastic article of claim 3 wherein the attached surfacing foil comprises a polyolefin dough comprising a mixture of polyethylene and polypropylene; a binder which is a 40-55% aqueous dispersion of a polymer containing 87 to 90 parts by weight of ethyl acrylate units, 1 to 8 parts by weight of acrylonitrile units, 1 to 8 parts of N-methylolacrylamide units and 1 to 6 parts by weight of acrylate acid units; the flocculant is aluminum sulphate; and the powder element contains glass fiber, polypropylene powder, and talc.
References Cited (Backward Citations)
US4104226A
Cited
JPS53147744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |