US4724187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive laminate flooring
Assignee: General Electric Co
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Filing: 1986-03-25
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Granted: 1988-02-09
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Expires: 2006-03-25
Abstract
Abstract A decorative, high pressure, conductive laminate for flooring material is formed of a plurality of phenolic impregnated carbon-containing core sheets, a melamine resin impregnated decor sheet containing about 3-5% carbon fibers having a length greater than 1/16 inch and preferably 1/8 inch or more, and a melamine resin impregnated abrasion resistant overlay. The overlay melamine resin also contains an ionic salt and a tertiary aliphatic amine, both also preferably being in the decor melamine as well. The laminate has a volume resistance of 2.5x104 to about 106 ohms. To make the product more dimensionally stable, carbon containing core sheets are interleaved with non-carbon-containing kraft sheets, the phenolic resin of which also contains ionic salt.
Inventors
- 👤 Israel S. Ungar
- 👤 Robin D. O'Dell
- 👤 Alice M. Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:09
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/06; B32B29/02; B32B27/00; B32B27/12; B32B27/42; D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/14; D21H27/00; D21H27/18; D21H27/22; E; E04; E04F; E04F15/00; E04F15/02; H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; H05; H05F; H05F3/00; H05F3/02; H05F3/025; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/106; B32B2264/00; B32B2264/10; B32B2264/107; B32B2264/108; B32B2307/00; B32B2307/20; B32B2307/202; B32B2307/21; B32B2307/50; B32B2307/584; B32B2386/00; B32B2471/00; D21H11/00; D21H11/02; D21H11/04; D21H13/00; D21H13/36; D21H13/46; D21H13/50; D21H17/07; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/48; D21H17/49; D21H17/51; D21H17/63; D21H17/66; D21H17/67; D21H17/675; D21H17/71; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044; Y10T428/00; Y10T428/30; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31942; Y10T428/31946; Y10T428/31949; Y10T428/31964; Y10T428/31971; Y10T428/31993; Y10T428/31996
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
107 words
A high pressure, decorative, conductive laminate for use as flooring material, comprising a plurality of thermoset resin impregnated core sheets; a thermoset resin impregnated decor sheet overlying said core sheets, said decor sheet containing carbon fibers of length sufficient and in an amount sufficient to provide an electrically conductive path therethrough; and a thermoset resin impregnated abrasion-resistant overlay sheet, said thermoset resin of said overly sheet containing up to 6% by weight of an ionic salt and an amount sufficient of an humectant to improve the ability of the laminate to rapidly dissipate static electricity; said laminate having a volume resistance of at most 10 7 ohms.
Claim 2
Dependent Claim
107 words
A high pressure, decorative, conductive laminate for use as flooring material, comprising a plurality of thermoset resin impregnated core sheets; a thermoset resin impregnated decor sheet overlying said core sheets, said decor sheet containing carbon fibers of length sufficient and in an amount sufficient to provide an electrically conductive path therethrough; and a thermoset resin impregnated abrasion-resistant overlay sheet, said thermoset resin of said overly sheet containing up to 6% by weight of an ionic salt and an amount sufficient of an humectant to improve the ability of the laminate to rapidly dissipate static electricity; said laminate having a volume resistance of at most 10 7 ohms.
Claim 3
Dependent Claim
38 words
A decorative, conductive laminate flooring material according to claim 1 wherein said carbon fibers in said decor sheet are present in an amount of at least about 3% by weight and have a length greater than 1/16 inch.
Claim 4
Dependent Claim
27 words
A decorative, conductive laminate flooring material according to claim 2 wherein said carbon fibers are present in said decor sheet in an amount of 3-5% by weight.
Claim 5
Dependent Claim
24 words
A decorative, conductive laminate flooring material according to claim 3 wherein sa:d thermoset resin for said decor sheet and said overlay comprises melamine-formaldehyde resin.
Claim 6
Dependent Claim
31 words
A decorative, conductive laminate flooring material according to claim 4 wherein said melamine-formaldehyde resin in said decor sheet contains 1-6% by weight, based on the resin solids, of an ionic salt.
Claim 7
Dependent Claim
32 words
A decorative, conductive laminate flooring material according to claim 5 wherein said melamine resin of said decor sheet contains 1-6% by weight, based on the resin solids, of a tertiary aliphatic amine.
Claim 8
Dependent Claim
43 words
A decorative, conductive laminate flooring material according to claim 1 wherein the thermoset resin of said decor sheet contains up to 6% by weight, based on the weight of the resin solids, of each of an ionic salt and a tertiary aliphatic amine.
Claim 9
Dependent Claim
22 words
A decorative, conductive laminate flooring material according to claim 1 having a volume resistance of 2.5×10 4 to about 10 7 ohms.
Claim 10
Dependent Claim
20 words
A decorative, conductive laminate flooring material according to claim 1 wherein the resin of said core sheets is phenolic resin.
Claim 11
Dependent Claim
28 words
A decorative, conductive laminate flooring material according to claim 9 wherein said phenolic resin contains up to 6%, based on the phenolic resin solids, of an ionic salt.
Claim 12
Dependent Claim
21 words
A decorative, conductive laminate flooring material according to claim 1 wherein at least some of said core sheets are carbon impregnated.
Claim 13
Dependent Claim
31 words
A dimensionally stable decorative, conductive laminate flooring material according to claim 11 wherein at least one non-carbon-containing kraft paper core sheet is interleaved between a pair of said carbon-containing core sheets.
Claim 14
Dependent Claim
24 words
A dimensionally stable decorative, conductive laminate flooring material according to claim 12 wherein said core comprises alternating sheets of carbon-containing paper and non-carbon-containing paper.
Claim 15
Dependent Claim
34 words
A dimensionally stable decorative laminate flooring material according to claim 12 wherein the thermoset resin impregnating said at least one non-carbon-containing core sheet contains 1-6%, based on the res:n solids, of an ionic salt.
Claim 16
Dependent Claim
102 words
A high pressure, decorative, conductive laminate for use as flooring material, comprising a plurality of melamine resin impregnated core layers; a melamine resin impregnated decor layer overlying said core layers, said decor layer containing carbon fibers of length sufficient greater than 1/16 inch and in an amount sufficient in the range of about 3-5% to provide an electrically conductive path therethrough; and a melam:ne resin impregnated abrasion-resistance overlay sheet, said melamine resin of said overlay sheet containing up to 6% by we:ght of in ionic salt and up to 6% by weight of an humectant based on the weight of resin solids;
Claim 17
Dependent Claim
102 words
A high pressure, decorative, conductive laminate for use as flooring material, comprising a plurality of melamine resin impregnated core layers; a melamine resin impregnated decor layer overlying said core layers, said decor layer containing carbon fibers of length sufficient greater than 1/16 inch and in an amount sufficient in the range of about 3-5% to provide an electrically conductive path therethrough; and a melam:ne resin impregnated abrasion-resistance overlay sheet, said melamine resin of said overlay sheet containing up to 6% by we:ght of in ionic salt and up to 6% by weight of an humectant based on the weight of resin solids;
Claim 18
Dependent Claim
13 words
said laminate having a volume resistance of 2.5×10 4 to 10 7 ohms.
Claim 19
Dependent Claim
13 words
said laminate having a volume resistance of 2.5×10 4 to 10 7 ohms.
Claim 20
Dependent Claim
39 words
A decorative, conductive laminate according to claim 1, wherein said humectant is an aliphatic tertiary amine, and said aliphatic tertiary amine is present in an amount of up to 6% by weight based on the weight of resin solids.
Claim 21
Dependent Claim
33 words
A decorative, conductive laminate according to claim 5, wherein said melamine resin of said decor sheet contains an amount of an humectant sufficient to improve the static electricity dissipating ability of said laminate.
Claim 22
Dependent Claim
39 words
A decorative, conductive laminate according to claim 1, wherein the thermoset resin of said decor sheet contains up to 6% by weight, based on the weight of the resin solids, of each of an ionic salt and an humectant.
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) | 1991-02-08 | 1991-08-10 | 1992-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-08 | 1995-08-10 | 1996-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-08 | 1999-08-10 | 2000-02-09 | $7700.00 | Window Closed / Lapsed |