US3946137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machineable decorative laminates
Assignee: Formica Corp
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Filing: 1973-05-16
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Granted: 1976-03-23
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Expires: 1993-05-16
Abstract
Abstract This invention relates to a decorative plastic laminate preferably one having a high wear resistant decorative surface in which the various layers have controlled wear indices so as to provide the laminate with improved uniform machineable properties.
Inventors
- 👤 George Edward Power
- 👤 Dudley Wulfekotter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:32
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/002; B32B29/005; B44; B44C; B44C5/00; B44C5/04; B44C5/0469; B44C5/0476; B32B2264/00; B32B2264/10; B32B2264/102; B32B2305/00; B32B2305/72; B32B2307/00; B32B2307/50; B32B2307/554; B32B2317/00; B32B2317/12; B32B2317/125; B32B2451/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
137 words
A decorative plastic laminate, provided with improved uniform machineable properties, comprising the heat and pressure consolidated and cured unitary structure of an assembly of superimposed layers comprising: a. a core portion of unpigmented kraft paper sheets impregnated with a thermosetting phenol-formaldehyde resin, said core portion having a core tool wear index of between about 3 to about 10, b. at least one white or pastel opaque pigmented alpha-cellulose decorative paper layer impregnated with a thermosetting melamine-formaldehyde resin, having a decor tool wear index of between about 2 to about 7, c. wherein the pigmented layers having a decor tool wear index greater than 7 or non-pigmented layers having a core tool wear index greater than 10 are present in such a total quantity that they constitute not more than 5% of the total thickness of the laminate.
Claim 2
Dependent Claim
137 words
A decorative plastic laminate, provided with improved uniform machineable properties, comprising the heat and pressure consolidated and cured unitary structure of an assembly of superimposed layers comprising: a. a core portion of unpigmented kraft paper sheets impregnated with a thermosetting phenol-formaldehyde resin, said core portion having a core tool wear index of between about 3 to about 10, b. at least one white or pastel opaque pigmented alpha-cellulose decorative paper layer impregnated with a thermosetting melamine-formaldehyde resin, having a decor tool wear index of between about 2 to about 7, c. wherein the pigmented layers having a decor tool wear index greater than 7 or non-pigmented layers having a core tool wear index greater than 10 are present in such a total quantity that they constitute not more than 5% of the total thickness of the laminate.
Claim 3
Dependent Claim
51 words
A decorative plastic laminate according to claim 1 in which the decor sheet is covered with an overlay sheet, said overlay sheet is comprised of an unpigmented alpha-cellulose paper layer impregnated with a thermosetting melamine-formaldehyde resin, said overlay sheet having an overlay tool wear index of not more than about 2.
Claim 4
Dependent Claim
45 words
A decorative plastic laminate according to claim 1 in which there is used two white or pastel opaque pigmented alpha-cellulose decorative paper layers that are impregnated with a thermosetting melamine-formaldehyde resin, each having a decor tool wear index of between about 2 to about 7.
Claim 5
Dependent Claim
33 words
A decorative plastic laminate according to claim 1 in which the decorative paper layer contains small quantities of finely divided silica flour which imparts to the laminate a high wear resistant surface characteristic.
Claim 6
Dependent Claim
33 words
A decorative plastic laminate according to claim 2 in which the overlay sheet has in its surface small quantities of silica flour which imparts to the laminate a high wear resistant surface characteristic.
Claim 7
Dependent Claim
65 words
A decorative plastic laminate according to claim 1 in which the decorative paper layer has imprinted thereon a decorative design and in which said decorative paper layer is covered with an overlay sheet, said overlay sheet is comprised of an unpigmented alpha-cellulose paper layer impregnated with a thermosetting melamine-formaldehyde resin, said overlay sheet having an overlay tool wear index of not more than about 2.
Claim 8
Dependent Claim
179 words
A decorative plastic laminate, provided with improved uniform machineable properties, comprising the heat and pressure consolidated and cured unitary structure of an assembly of superimposed layers comprising: a. a core portion of unpigmented kraft paper sheets impregnated with a thermosetting phenol-formaldehyde resin, said core portion having a core tool wear index of between about 3 to about 10, b. an alpha-cellulose decorative paper layer having imprinted thereon a decorative design, impregnated with a thermosetting melamine-formaldehyde resin, having a decor tool wear index of between about 2 to about 7, said printed decorative paper layer is covered with an overlay sheet, said overlay sheet is comprised of an unpigmented alpha-cellulose paper layer impregnated with a thermosetting melamine-formaldehyde resin, said overlay sheet having an overlay tool wear index of not more than about 2, c. wherein the pigmented layers having a decor tool wear index greater than 7 or non-pigmented layers having a core tool wear index greater than 10 are present in such a total quantity that they constitute not more than 5% of the total thickness of the laminate.
Claim 9
Dependent Claim
179 words
A decorative plastic laminate, provided with improved uniform machineable properties, comprising the heat and pressure consolidated and cured unitary structure of an assembly of superimposed layers comprising: a. a core portion of unpigmented kraft paper sheets impregnated with a thermosetting phenol-formaldehyde resin, said core portion having a core tool wear index of between about 3 to about 10, b. an alpha-cellulose decorative paper layer having imprinted thereon a decorative design, impregnated with a thermosetting melamine-formaldehyde resin, having a decor tool wear index of between about 2 to about 7, said printed decorative paper layer is covered with an overlay sheet, said overlay sheet is comprised of an unpigmented alpha-cellulose paper layer impregnated with a thermosetting melamine-formaldehyde resin, said overlay sheet having an overlay tool wear index of not more than about 2, c. wherein the pigmented layers having a decor tool wear index greater than 7 or non-pigmented layers having a core tool wear index greater than 10 are present in such a total quantity that they constitute not more than 5% of the total thickness of the laminate.
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) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |