US4950439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glossy finish fiber reinforced molded product
Assignee: CH Masland and Sons
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Filing: 1987-07-10
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Granted: 1990-08-21
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Expires: 2007-07-10
Abstract
Abstract Described are smooth, glossy finished fiber reinforced thermoplastic prepreg materials composed of reinforcement fibers impregnated with and surrounded by thermoplastic. Prior to consolidation, the material preferably consists of thermoplastic fibers and reinforcing fibers, intimately blended together. When heated, with the aid of pressure, the thermoplastic fibers melt, surround and impregnate the reinforcing fibers and provide a smooth, glossy finish to the reinforced article. Excellent surface appearance and the ability to accommodate high-speed processing characterize the prepreg materials of this invention.
Inventors
- 👤 Rayna W. Smith
- 👤 Glen W. Saidla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:11
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/46; B29C70/467; B29C70/54; B29C70/543; B29K; B29K2995/00; B29K2995/0018; B29K2995/0022; B29L; B29L2031/00; B29L2031/30; B29L2031/3005; Y; Y10; Y10S; Y10S264/00; Y10S264/64; Y10S264/66; Y10S264/75; Y10S264/76; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1016; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1352; Y10T428/1362; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
76 words
A consolidated, heat and pressure-molded fiber reinforced thermoplastic composition produced from a non-needled non-woven of discrete reinforcing fibers and thermoplastic fibers, devoid of liquid binders and distinctly different fiber layers or alternating distinctly different layers, suitable for cosmetic or appearance applications, having a surface appearance value recorded at 20° and 60° gloss angle measurement for ASTM standard D-523 exceeding 10 and 50, respectively, thermoplastic material from providing the matrix for reinforcing fibers in the molded product.
Claim 2
Dependent Claim
76 words
A consolidated, heat and pressure-molded fiber reinforced thermoplastic composition produced from a non-needled non-woven of discrete reinforcing fibers and thermoplastic fibers, devoid of liquid binders and distinctly different fiber layers or alternating distinctly different layers, suitable for cosmetic or appearance applications, having a surface appearance value recorded at 20° and 60° gloss angle measurement for ASTM standard D-523 exceeding 10 and 50, respectively, thermoplastic material from providing the matrix for reinforcing fibers in the molded product.
Claim 3
Dependent Claim
13 words
The composite of claim 1 composed of inorganic fibers in a thermoplastic matrix.
Claim 4
Dependent Claim
10 words
The composite of claim 1 consisting of multiple consolidated layers.
Claim 5
Dependent Claim
42 words
A corrugated, unconsolidated fibrous web of discrete inorganic and/or organic reinforcing fibers and thermoplastic fibers blended together in a weight ratio of about 10:90 to about 60:40, and formed into a non-needled, loose non-woven web of discrete fibers, devoid of liquid binder.
Claim 6
Dependent Claim
42 words
A corrugated, unconsolidated fibrous web of discrete inorganic and/or organic reinforcing fibers and thermoplastic fibers blended together in a weight ratio of about 10:90 to about 60:40, and formed into a non-needled, loose non-woven web of discrete fibers, devoid of liquid binder.
Claim 7
Dependent Claim
94 words
A consolidated heat and pressure molded thermoplastic sheet having an automotive Class A glossy surface finish produced by consolidation of an unconsolidated fibrous non-woven web of discrete reinforcing fiber intimately blended with discrete thermoplastic fibers having a melt index in the range of about 2 to about 500, the reinforcing and thermoplastic fibers present in a weight ratio of about 10:90 to about 60:40, devoid of liquid binders and distinctly different fiber layers or alternating distinctly different layers, thermoplastic material from melted thermoplastic fibers providing the matrix for reinforcing fibers in the molded product.
Claim 8
Dependent Claim
94 words
A consolidated heat and pressure molded thermoplastic sheet having an automotive Class A glossy surface finish produced by consolidation of an unconsolidated fibrous non-woven web of discrete reinforcing fiber intimately blended with discrete thermoplastic fibers having a melt index in the range of about 2 to about 500, the reinforcing and thermoplastic fibers present in a weight ratio of about 10:90 to about 60:40, devoid of liquid binders and distinctly different fiber layers or alternating distinctly different layers, thermoplastic material from melted thermoplastic fibers providing the matrix for reinforcing fibers in the molded product.
Claim 9
Dependent Claim
95 words
A consolidated heat and pressure molded thermoplastic sheet having an automotive Class A glossy surface finish produced by consolidation of an unconsolidated corrugated fibrous non-woven web of discrete reinforcing fiber intimately blended with discrete thermoplastic fibers having a melt index in the range of about 2 to about 500, the reinforcing and thermoplastic fibers present in a weight ratio of about 10:90 to about 60:40, devoid of liquid binders and distinctly different fiber layers or alternating distinctly different layers, thermoplastic material from melted thermoplastic fibers providing the matrix for reinforcing fibers in the molded product.
Claim 10
Dependent Claim
95 words
A consolidated heat and pressure molded thermoplastic sheet having an automotive Class A glossy surface finish produced by consolidation of an unconsolidated corrugated fibrous non-woven web of discrete reinforcing fiber intimately blended with discrete thermoplastic fibers having a melt index in the range of about 2 to about 500, the reinforcing and thermoplastic fibers present in a weight ratio of about 10:90 to about 60:40, devoid of liquid binders and distinctly different fiber layers or alternating distinctly different layers, thermoplastic material from melted thermoplastic fibers providing the matrix for reinforcing fibers in the molded product.
Claim 11
Dependent Claim
83 words
A consolidated, heat and pressure molded thermoplastic sheet having an automotive Class A surface finish produced by subjecting a starting material devoid of distinctly different fiber layers or alternating distinctly different layers and liquid binder and containing from 10 to 60% by weight discrete reinforcing fibers, blended with fibers of thermoplastic resin, the blend resulting in the form of a loose non-woven web, to heat and pressure, thermoplastic material from melted thermoplastic fibers providing the matrix for reinforcing fibers in the molded product.
Claim 12
Dependent Claim
83 words
A consolidated, heat and pressure molded thermoplastic sheet having an automotive Class A surface finish produced by subjecting a starting material devoid of distinctly different fiber layers or alternating distinctly different layers and liquid binder and containing from 10 to 60% by weight discrete reinforcing fibers, blended with fibers of thermoplastic resin, the blend resulting in the form of a loose non-woven web, to heat and pressure, thermoplastic material from melted thermoplastic fibers providing the matrix for reinforcing fibers in the molded product.
Claim 13
Dependent Claim
12 words
A shaped, three-dimensional article made of the thermoplastic sheet of claim 7.
Claim 14
Dependent Claim
24 words
A process of making a three-dimensional shaped article comprising heating the thermoplastic sheet of claim 7 pressing the heated sheet into the desired shape.
Claim 15
Dependent Claim
14 words
The process of claim 9 in which the sheet is heated and pressed simultaneously.
Claim 16
Dependent Claim
154 words
A process of preparing a fiber reinforced thermoplastic molded product having a glossy surface, the process comprising the steps of: (1) opening the fiber bundles of a reinforcing fiber into discrete staple filaments; (2) opening the fiber bundles of a thermoplastic fiber into discrete stale filaments; (3) blending, without addition of liquid binder, the discrete reinforcing fibers and thermoplastic fibers in a weight ratio of about 10:90 to about 60:40 and forming the blended fibers into a non-needled non-woven web where the fibers are discrete, as opposed to in a bundle or mat; and (4) heating the web to at least the melting point of the thermoplastic fibers and applying pressure to the web to cause the thermoplastic fibers to melt, eliminating air from the web, and pressing the non-woven web into a consolidated sheet, thermoplastic material from melted thermoplastic fibers melted thermoplastic fibers providing the matrix for reinforcing fibers in the molded product.
Claim 17
Dependent Claim
154 words
A process of preparing a fiber reinforced thermoplastic molded product having a glossy surface, the process comprising the steps of: (1) opening the fiber bundles of a reinforcing fiber into discrete staple filaments; (2) opening the fiber bundles of a thermoplastic fiber into discrete stale filaments; (3) blending, without addition of liquid binder, the discrete reinforcing fibers and thermoplastic fibers in a weight ratio of about 10:90 to about 60:40 and forming the blended fibers into a non-needled non-woven web where the fibers are discrete, as opposed to in a bundle or mat; and (4) heating the web to at least the melting point of the thermoplastic fibers and applying pressure to the web to cause the thermoplastic fibers to melt, eliminating air from the web, and pressing the non-woven web into a consolidated sheet, thermoplastic material from melted thermoplastic fibers melted thermoplastic fibers providing the matrix for reinforcing fibers in the molded product.
Claim 18
Dependent Claim
19 words
The process of claim 11 in which the web of step (3) is corrugated prior to consolidation step (4).
Claim 19
Dependent Claim
20 words
The process of claim 11 or 12 in which the reinforcing fibers are glass, carbon, aramid, steel or mixtures thereof.
Claim 20
Dependent Claim
19 words
The process of claim 11 or 12 in which thermoplastic powder is added to the web prior to consolidation.
Claim 21
Dependent Claim
28 words
The process of claim 11 or 12 in which the reinforcing fibers constitute up to 60% by weight of the web and the balance is substantially thermoplastic fibers.
Claim 22
Dependent Claim
25 words
The process of claim 11 or 12 in which the thermoplastic fibers have a melt index in the range of about 2 to about 500.
Claim 23
Dependent Claim
28 words
The process of claim 11 or 12 in which the resulting product has a surface gloss value of at least 10 at 20° and 50 at 60° measurements.
Claim 24
Dependent Claim
23 words
A process according to claim 11 in which multiple web layers are consolidated prior to heating of the thermoplastic to its melt point.
Claim 25
Dependent Claim
17 words
A process according to claim 11 in which multiple layers are heated and fused in separate steps.
Claim 26
Dependent Claim
17 words
A process according to claim 11 in which multiple layers are heated and fused in sequential steps.
Claim 27
Dependent Claim
29 words
A process according to claim 19 in which the sequential step is fusing a layer of fibers or fiber incorporating powder to or on a film of thermoplastic polymer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-20 | 1994-02-19 | 1994-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-20 | 1998-02-19 | 1998-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-20 | 2002-02-19 | 2002-08-21 | $7700.00 | Window Closed / Lapsed |