US4743483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Napped sheet having a pattern thereon and method for its production
Assignee: Toray Industries Inc
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Filing: 1986-12-02
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Granted: 1988-05-10
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Expires: 2006-12-02
Abstract
Abstract A napped sheet has a pattern thereon formed by the sharp contrast between an area with a nap surface and an area with a reversed nap surface on which nap ends are reversed and extend into the inner part of the sheet. A process for producing the sheet includes the step of first raising a fiber sheet and next impinging a high-pressure columnar fluid jet stream on part of the fiber sheet. The product of the invention is soft, strong and beautiful, and has good durability. The production process is simple and inexpensive.
Inventors
- 👤 Hisao Shimizu
- 👤 Koji Watanabe
- 👤 Miyoshi Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:55
CPC Classifications
D; D06; D06C; D06C23/00; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23929; Y10T428/23936; Y10T428/2395
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
60 words
A napped sheet having a sharp, non-random pattern on at least one surface, said surface being composed of a nap area and a reversed nap area on which nap ends are extending into the inner part or through the opposite surface of the sheet, the width of the intermediate zone between the two areas being not more than 1 mm.
Claim 2
Dependent Claim
60 words
A napped sheet having a sharp, non-random pattern on at least one surface, said surface being composed of a nap area and a reversed nap area on which nap ends are extending into the inner part or through the opposite surface of the sheet, the width of the intermediate zone between the two areas being not more than 1 mm.
Claim 3
Dependent Claim
24 words
A napped sheet according to claim 1, wherein the nap density of the nap area is more than twice of the reversed nap area.
Claim 4
Dependent Claim
13 words
A napped sheet according to claim 1, wherein said sheet contains an elastomer.
Claim 5
Dependent Claim
22 words
A napped sheet according to claim 1, wherein the nap fibers are ultrafine fibers having a fineness of 0.8 denier or less.
Claim 6
Dependent Claim
19 words
A napped sheet according to claim 1, wherein the nap fibers have a length of 10 mm or less.
Claim 7
Dependent Claim
13 words
A napped sheet according to claim 1, wherein the sheet is non-woven fabric.
Claim 8
Dependent Claim
16 words
A napped sheet according to claim 1, wherein the sheet is a woven or knitted fabric.
Claim 9
Dependent Claim
24 words
A napped sheet according to claim 1, wherein the sheet is a composite sheet comprising a non-woven sheet and a woven or knitted fabric.
Claim 10
Dependent Claim
16 words
A napped sheet according to claim 1, wherein said reversed naps protrude at the reverse surface.
Claim 11
Dependent Claim
84 words
A process for producing a napped sheet having a sharp, non-random pattern thereon, comprising impinging a high-pressure fluid jet stream on parts of a fiber sheet, said fiber sheet having been raised to form a napped surface before impringing by the high-pressure fluid, said jet stream reversing naps on said impinged parts and entangling them with base layer fibers in said fiber sheet and forming an intermediate zone between said reversed naps and said nappped surface having a width not more than 1 mm.
Claim 12
Dependent Claim
84 words
A process for producing a napped sheet having a sharp, non-random pattern thereon, comprising impinging a high-pressure fluid jet stream on parts of a fiber sheet, said fiber sheet having been raised to form a napped surface before impringing by the high-pressure fluid, said jet stream reversing naps on said impinged parts and entangling them with base layer fibers in said fiber sheet and forming an intermediate zone between said reversed naps and said nappped surface having a width not more than 1 mm.
Claim 13
Dependent Claim
14 words
A process according to claim 10, wherein said fiber sheet is non-woven fiber sheet.
Claim 14
Dependent Claim
17 words
A process according to claim 10, wherein said fiber sheet is a woven or knitted fiber sheet.
Claim 15
Dependent Claim
25 words
A process according to any one of claims 10, wherein the pressure of said high-pressure fluid jet stream is 10 to 200 kg/cm 2 .
Claim 16
Dependent Claim
23 words
A process according to any one of claim 10, wherein the fluid is a liquid and the jet stream is columnar jet stream.
Claim 17
Dependent Claim
11 words
A process according to claim 14, wherein said fluid is water.
Claim 18
Dependent Claim
14 words
A process according to claim 15, wherein said high-pressure fluid jet stream is oscillated.
Claim 19
Dependent Claim
15 words
A process according to claim 10, wherein said fiber sheet is raised with sand paper.
Claim 20
Dependent Claim
15 words
A process according to claim 10, wherein said fiber sheet is raised with card cloth.
Claim 21
Dependent Claim
15 words
A process according to claim 10, wherein a templet is placed on said nap surface.
Claim 22
Dependent Claim
13 words
A process according to claim 19, wherein said templet is a screen stencil.
References Cited (Backward Citations)
US4497095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |