US4869957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasing carrier with transfer coating for decorative laminates
Assignee: Warren SD Co
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Filing: 1988-06-10
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Granted: 1989-09-26
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Expires: 2008-06-10
Abstract
Abstract A temporary support with a transferable film composition coated on its surface is used in the manufacture of heat and pressure consolidated laminates to produce laminates of improved surface strength and functional properties. The film is composed of polyvinyl butyral resin and melamine resin. Additives may be included in the film composition for functional purposes and appearance.
Inventors
- 👤 Henk F. E. Vankerckhoven
- 👤 Eric H. C. De Koster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:28
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/52; D21H23/64; B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/28; B44; B44C; B44C5/00; B44C5/04; B44C5/0469; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/49; D21H17/51; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24934; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2839; Y10T428/31504; Y10T428/31855; Y10T428/31859; Y10T428/31862; Y10T428/31942; Y10T428/31946; Y10T428/31949; Y10T428/31957; Y10T428/3196
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
48 words
A releasing carrier having on its surface a transferable film composition that is capable of transferring to and reacting with noble thermosetting resin impregnants of decorative fibrous sheets in a heat and pressure laminating process wherein the film composition is comprised of polyvinyl butyral resin and melamine resin.
Claim 2
Dependent Claim
48 words
A releasing carrier having on its surface a transferable film composition that is capable of transferring to and reacting with noble thermosetting resin impregnants of decorative fibrous sheets in a heat and pressure laminating process wherein the film composition is comprised of polyvinyl butyral resin and melamine resin.
Claim 3
Dependent Claim
23 words
The releasing carrier according to claim 1 wherein the transferable film composition on the carrier surface further comprises at least one acid catalyst.
Claim 4
Dependent Claim
20 words
The releasing carrier according to claim 1 wherein the transferable film composition on the carrier surface further comprises an antioxidant.
Claim 5
Dependent Claim
104 words
A decorative laminate prepared by the steps of: (A) stacking together in an assembly (a) one or more resin impregnated core sheets, (b) a decorative fibrous sheet impregnated with a noble thermosetting resin, and (c) a releasing carrier surface coated with a transferable film composition of polyvinyl butyral resin and melamine resin in contact with the decorative fibrous sheet; (B) applying heat and pressure to consolidate the assembly into a unitary structure; and (C) separating the releasing carrier surface from the unitary structure; the improvement wherein said transferable film composition reacts with the noble thermosetting resin of the decorative fibrous sheet during assembly consolidation.
Claim 6
Dependent Claim
104 words
A decorative laminate prepared by the steps of: (A) stacking together in an assembly (a) one or more resin impregnated core sheets, (b) a decorative fibrous sheet impregnated with a noble thermosetting resin, and (c) a releasing carrier surface coated with a transferable film composition of polyvinyl butyral resin and melamine resin in contact with the decorative fibrous sheet; (B) applying heat and pressure to consolidate the assembly into a unitary structure; and (C) separating the releasing carrier surface from the unitary structure; the improvement wherein said transferable film composition reacts with the noble thermosetting resin of the decorative fibrous sheet during assembly consolidation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |