Patent US222296A successfully refreshed from Google Patents.
Patent US4434205A successfully refreshed from Google Patents.
US4434205A
Expired / Lapsed
US
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Artificial leathers
Assignee: Tonen General Sekiyu KK
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Filing: 1982-07-22
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Granted: 1984-02-28
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Expires: 2002-07-22
Abstract
Abstract An artificial leather is made by impregnating a special nonwoven web substrate with an elastic polymer material. In another embodiment the substrate comprises a nonwoven fabric laminated to a woven or nonwoven fabric.
Inventors
- 👤 Shigeo Fujii
- 👤 Tokuzo Ikeda
- 👤 Takashi Mikami
- 👤 Shuji Okano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:19
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/15; B23Q3/154; B23Q3/1543; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/24992; Y10T428/27; Y10T428/31504; Y10T428/31551; Y10T442/00; Y10T442/20; Y10T442/2008; Y10T442/2369; Y10T442/2377; Y10T442/30; Y10T442/3707; Y10T442/378; Y10T442/3813
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
53 words
An artificial leather comprising a nonwoven fabric and a polymer filling the interstices of said nonwoven fabric, said nonwoven fabric consisting essentially of stacked and intertwined melt-blown long fibers forming thin intertwined layers extending between one surface of said nonwoven fabric or a part thereof and the other surface or a part thereof.
Claim 2
Dependent Claim
53 words
An artificial leather comprising a nonwoven fabric and a polymer filling the interstices of said nonwoven fabric, said nonwoven fabric consisting essentially of stacked and intertwined melt-blown long fibers forming thin intertwined layers extending between one surface of said nonwoven fabric or a part thereof and the other surface or a part thereof.
Claim 3
Dependent Claim
16 words
The artificial leather according to claim 1 wherein the polymer is an elastomer or elastomeric polymer.
Claim 4
Dependent Claim
44 words
The artificial leather according to claim 1 wherein the polymer is selected from the groups consisting of synthetic rubber such as polyurethane, NBR and SBR, polyvinyl chloride, polyamide resins such as nylon 6, nylon 66 and methoxymethylated polyamine resins, acrylic resins and copolymers thereof.
Claim 5
Dependent Claim
37 words
The artificial leather according to claim 1, 2 or 3 wherein the elastic or elastomeric polymer is present in an amount of from about 5 to 150% by weight based on the weight of the nonwoven fabric.
Claim 6
Dependent Claim
25 words
The artificial leather according to claim 1 wherein the nonwoven fabric is formed of fibers having a diameter of about 0.1 to about 30 microns.
Claim 7
Dependent Claim
23 words
The artificial leather according to claim 1 wherein the nonwoven fabric has a basis weight of about 5 to 2,000 g/m 2 .
Claim 8
Dependent Claim
21 words
The artificial leather according to claim 1 wherein the nonwoven fabric has a thickness of about 0.5 to about 100 mm.
Claim 9
Dependent Claim
103 words
An artificial leather comprising a polyurethane supported in a nonwoven fabric, said nonwoven fabric consisting essentially of stacked and intertwined melt-blown long fibers having a diameter of about 0.1 to about 30 microns, forming thin intertwined layers extending between one surface or part thereof and the other surface of said nonwoven fabric or part thereof, said polyurethane being present in the amount of about 5 to about 150% by weight based on the weight of the nonwoven fabric, said nonwoven fabric having a basis weight of about 5 to about 2,000 g/m 2 and a thickness of about 0.5 to about 100 mm.
Claim 10
Dependent Claim
103 words
An artificial leather comprising a polyurethane supported in a nonwoven fabric, said nonwoven fabric consisting essentially of stacked and intertwined melt-blown long fibers having a diameter of about 0.1 to about 30 microns, forming thin intertwined layers extending between one surface or part thereof and the other surface of said nonwoven fabric or part thereof, said polyurethane being present in the amount of about 5 to about 150% by weight based on the weight of the nonwoven fabric, said nonwoven fabric having a basis weight of about 5 to about 2,000 g/m 2 and a thickness of about 0.5 to about 100 mm.
Claim 11
Dependent Claim
69 words
An artificial leather comprising a polymer supported in a nonwoven fabric laminate comprising a woven or nonwoven fabric laminated to a nonwoven fabric, said latter mentioned nonwoven fabric consisting essentially of stacked and intertwined melt-blown long fibers forming thin intertwined layers extending between one surface of said latter mentioned nonwoven fabric or a part thereof and the other surface of said latter mentioned nonwoven fabric or a part thereof.
Claim 12
Dependent Claim
69 words
An artificial leather comprising a polymer supported in a nonwoven fabric laminate comprising a woven or nonwoven fabric laminated to a nonwoven fabric, said latter mentioned nonwoven fabric consisting essentially of stacked and intertwined melt-blown long fibers forming thin intertwined layers extending between one surface of said latter mentioned nonwoven fabric or a part thereof and the other surface of said latter mentioned nonwoven fabric or a part thereof.
Claim 13
Dependent Claim
33 words
The artificial leather according to claim 9 wherein the polymer is present in an amount of from about 5 to about 150% by weight based on the weight of first mentioned nonwoven fabric.
Claim 14
Dependent Claim
27 words
The artificial leather according to claim 9 wherein the first mentioned nonwoven fabric is formed of fibers having a diameter of about 0.1 to about 30 microns.
Claim 15
Dependent Claim
25 words
The artificial leather according to claim 9 wherein the first-mentioned nonwoven fabric has a basis weight of about 5 to about 2,000 g/m 2 .
Claim 16
Dependent Claim
23 words
The artificial leather according to claim 9 wherein the first-mentioned nonwoven fabric has a thickness of from about 0.5 to about 100 mm.
Claim 17
Dependent Claim
26 words
The artificial leather according to claim 9 wherein the woven or second mentioned nonwoven fabric has a basis weight of 5 to 200 g/m 2 .
Claim 18
Dependent Claim
157 words
An artificial leather comprising a polyurethane supported in a nonwoven fabric laminate comprising a woven or nonwoven fabric laminated to a nonwoven fabric, said latter mentioned nonwoven fabric consisting essentially of stacked and intertwined melt-blown long fibers forming thin intertwined layers extending between one surface of said latter mentioned nonwoven fabric or a part thereof and the other surface of said latter mentioned nonwoven fabric or a part thereof, said polyurethane being present in the amount of from about 5 to about 15% by weight based on the weight of latter mentioned nonwoven fabric, said latter mentioned nonwoven fabric being formed of fibers having a diameter of about 0.1 to about 30 microns, the said fabric having a basis weight of about 5 to about 2,000 g/m 2 and a thickness of about 0.5 to about 100 mm, said woven fabric or first mentioned nonwoven fabric having a basis weight of 5 to 200 g/m 2 .
Claim 19
Dependent Claim
157 words
An artificial leather comprising a polyurethane supported in a nonwoven fabric laminate comprising a woven or nonwoven fabric laminated to a nonwoven fabric, said latter mentioned nonwoven fabric consisting essentially of stacked and intertwined melt-blown long fibers forming thin intertwined layers extending between one surface of said latter mentioned nonwoven fabric or a part thereof and the other surface of said latter mentioned nonwoven fabric or a part thereof, said polyurethane being present in the amount of from about 5 to about 15% by weight based on the weight of latter mentioned nonwoven fabric, said latter mentioned nonwoven fabric being formed of fibers having a diameter of about 0.1 to about 30 microns, the said fabric having a basis weight of about 5 to about 2,000 g/m 2 and a thickness of about 0.5 to about 100 mm, said woven fabric or first mentioned nonwoven fabric having a basis weight of 5 to 200 g/m 2 .
Claim 20
Dependent Claim
12 words
The artificial leather of claim 1 wherein said nonwoven fabric is compressed.
Claim 21
Dependent Claim
12 words
The artificial leather of claim 8 wherein said nonwoven fabric is compressed.
Claim 22
Dependent Claim
12 words
The artifical leather of claim 9 wherein said nonwoven fabric is compressed.
Claim 23
Dependent Claim
11 words
The artificial leather of claim 9 wherein the laminate is compressed.
Claim 24
Dependent Claim
16 words
The artificial leather of claim 15 wherein the woven or first mentioned nonwoven fabric is compressed.
Claim 25
Dependent Claim
11 words
The artificial leather of claim 15 wherein the laminate is compressed.
References Cited (Backward Citations)
GB635694A
Cited
GB942455A
Cited
GB938260A
Cited
GB986357A
Cited
GB1136806A
Cited
US4146663A
Cited
GB1581486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |