US4499137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scuff-resistant laminates
Assignee: General Electric Co
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Filing: 1983-08-09
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Granted: 1985-02-12
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Expires: 2003-08-09
Abstract
Abstract The scuff resistance of a high-pressure laminate is improved by incorporating in or very near the surface thereof, finely divided polyethylene wax preferably having a particle size of about 1-25 microns and a melting point of 220 DEG -230 DEG F. The wax is incorporated as part of a coating mixture applied to the face of an unimpregnated decor paper sheet in an ultra-thin layer, which layer is dried at a temperature below the wax melting point and then impregnated with conventional melamine-formaldehyde resin. The impregnated sheet is placed onto a sheet of convention phenolic resin impregnated core sheets and consolidated in the conventional way under heat and pressure. During consolidation, the wax particles "bloom", or migrate to the surface. The finished laminate surface has greatly improved scuff resistance.
Inventors
- 👤 Robin D. O'Dell
- 👤 Israel S. Ungar
- 👤 Herbert I. Scher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:02
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/18; D21H27/22; D21H27/26; D21H27/28; B; B32; B32B; B32B29/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24405; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24876; Y10T428/24934; Y10T428/249921; Y10T428/249994; Y10T428/249998; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
146 words
A stain- and scuff-resistant decorative laminate comprising a backing layer and laminated thereto a thermoset laminating resin impregnated facing sheet, said facing sheet having thereon an ultra-thin facing layer comprising (1) a solid, particulate lubricant in an amount sufficient such that, during use of the facing sheet to make decorative laminate, the particulate lubricant melts and blooms to the surface thereby providing a decorative laminate having simultaneously good clarity and improved scuff resistance, with the proviso that said solid lubricant is not an oxidized wax or a silicone resin, and (2) sufficient binder material for said particles of lubricant to bind said particles to the surface of said facing sheet, said facing sheet being impregnated with a thermosetting resin compatible with said binder material, the particulate lubricant having melted and having bloomed to the surface during the laminating of said facing sheet to said backing layer.
Claim 2
Dependent Claim
146 words
A stain- and scuff-resistant decorative laminate comprising a backing layer and laminated thereto a thermoset laminating resin impregnated facing sheet, said facing sheet having thereon an ultra-thin facing layer comprising (1) a solid, particulate lubricant in an amount sufficient such that, during use of the facing sheet to make decorative laminate, the particulate lubricant melts and blooms to the surface thereby providing a decorative laminate having simultaneously good clarity and improved scuff resistance, with the proviso that said solid lubricant is not an oxidized wax or a silicone resin, and (2) sufficient binder material for said particles of lubricant to bind said particles to the surface of said facing sheet, said facing sheet being impregnated with a thermosetting resin compatible with said binder material, the particulate lubricant having melted and having bloomed to the surface during the laminating of said facing sheet to said backing layer.
Claim 3
Dependent Claim
18 words
A decorative laminate in accordance with claim 1, wherein said thermoset resin is melamine-formaldehyde resin or polyester resin.
Claim 4
Dependent Claim
18 words
A decorative laminate according to claim 2 wherein said lubricant has a melting point of about 180°-285° F.
Claim 5
Dependent Claim
19 words
A decorative laminate in accordance with claim 2 wherein said lubricant has a melting point of about 220°-230° F.
Claim 6
Dependent Claim
14 words
A decorative laminate according to claim 2 wherein said lubricant is a polymer wax.
Claim 7
Dependent Claim
14 words
A decorative laminate according to claim 2 wherein said lubricant is a polyethylene wax.
Claim 8
Dependent Claim
20 words
A decorative laminate in accordance with claim 2 wherein said ultra-thin coating has a calculated thickness of about 0.05-0.3 mils.
Claim 9
Dependent Claim
21 words
A decorative laminate in accordance with claim 2 wherein said binder material is microcrystalline cellulose, carboxymethylcellulose, sodium alginate or mixtures thereof.
Claim 10
Dependent Claim
113 words
A scuff-resistant decorative laminate comprising a backing layer and laminated thereto a thermoset laminating resin impregnated facing sheet, said facing sheet having an exposed surface comprising a melted and re-solidified solid lubricant in an amount sufficient to provide good clarity and improved scuff resistance and in the range of 0.175 to 0.5 pounds per ream of said facing sheet, the exposed surface of said facing sheet also comprising sufficient binder material for said lubricant to bind said lubricant in particulate form to the surface of said facing sheet, said solid lubricant having a melting point of 220° F. to about 285° F., and the surface of said facing sheet being free of haze.
Claim 11
Dependent Claim
113 words
A scuff-resistant decorative laminate comprising a backing layer and laminated thereto a thermoset laminating resin impregnated facing sheet, said facing sheet having an exposed surface comprising a melted and re-solidified solid lubricant in an amount sufficient to provide good clarity and improved scuff resistance and in the range of 0.175 to 0.5 pounds per ream of said facing sheet, the exposed surface of said facing sheet also comprising sufficient binder material for said lubricant to bind said lubricant in particulate form to the surface of said facing sheet, said solid lubricant having a melting point of 220° F. to about 285° F., and the surface of said facing sheet being free of haze.
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) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |