Patent US4132821A successfully refreshed from Google Patents.
US4132821A
Expired / Lapsed
US
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Textile fabric with leather-like appearance
Assignee: LYDALL CENTRAL Inc
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Filing: 1977-09-22
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Granted: 1979-01-02
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Expires: 1997-09-22
Abstract
Abstract There is provided a non-woven textile composite which simulates the strength, durability, appearance, temper, smooth surface, hand and feel of natural leather and a method of producing the same. The composite includes a non-woven needled textile fabric substrate having a coherent network of randomly entangled textile fibers with an as needled overall bulk density of at least 6 pounds/cubic foot and having a face surface and a back surface, and a geometric center therebetween. A shape-sustaining immobilized polymeric composition is differentially disposed in the substrate such that there is at least 25% more polymeric composition between the face surface and the geometric center than between the back surface and the geometric center. A moldable skin coat layer may be disposed on the face surface. The substrate and the immobilized polymeric composition are in a co-compacted state such that the thickness of the co-compacted substrate and immobilized polymeric composition are less than 0.75 the thickness of the substrate in the essentially uncompacted state.
Inventors
- 👤 John J. Hiers
- 👤 Stephen A. Wald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:24
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/04; D06N3/042; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/48; D06N3/0002; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24438; Y10T428/24942; Y10T428/24992; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/266; Y10T442/00; Y10T442/20; Y10T442/2352
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
149 words
A non-woven textile composite which stimulates the strength, durability, appearance, temper, smooth surface, break, hand and feel of natural leather comprising: (a) a non-woven needled textile fabric substrate having a coherent network of randomly entangled essentially uniform textile fibers with substantially no needle pick-up gradient and with an as needled overall bulk density of at least 6 pounds/cubic foot and having a face surface and a back surface, and a geometric center there-between; (b) a shape-sustaining immobilized polymeric composition differentially disposed in the substrate such that there is at least 25% more polymeric composition between the face surface and the geometric center than between the back surface and the geometric center; (c) and wherein the substrate and immobilized polymeric composition are in a co-compacted state such that the thickness of the co-compacted substrate and immobilized polymeric composition are less than 0.75 the thickness thereof in the essentially uncompacted state.
Claim 2
Dependent Claim
149 words
A non-woven textile composite which stimulates the strength, durability, appearance, temper, smooth surface, break, hand and feel of natural leather comprising: (a) a non-woven needled textile fabric substrate having a coherent network of randomly entangled essentially uniform textile fibers with substantially no needle pick-up gradient and with an as needled overall bulk density of at least 6 pounds/cubic foot and having a face surface and a back surface, and a geometric center there-between; (b) a shape-sustaining immobilized polymeric composition differentially disposed in the substrate such that there is at least 25% more polymeric composition between the face surface and the geometric center than between the back surface and the geometric center; (c) and wherein the substrate and immobilized polymeric composition are in a co-compacted state such that the thickness of the co-compacted substrate and immobilized polymeric composition are less than 0.75 the thickness thereof in the essentially uncompacted state.
Claim 3
Dependent Claim
25 words
The composite of claim 1 wherein the substrate has essentially uniformly distributed therethrough a filler which increases the leather-like hand and feel of the substrate.
Claim 4
Dependent Claim
27 words
The composite of claim 2 wherein the filler in the substrate has a weight between 5% and 200% of the weight of the fibers in the substrate.
Claim 5
Dependent Claim
23 words
The composite of claim 3 wherein the overall bulk density of the filled substrate is between 12 and 45 pounds per cubic foot.
Claim 6
Dependent Claim
18 words
The composite of claim 1 wherein a moldable skin coat layer is disposed on the said compacted substrate.
Claim 7
Dependent Claim
24 words
The composite of claim 5 wherein the skin coat layer is contained in and on the substrate in amounts between 2 and 20 mils.
Claim 8
Dependent Claim
15 words
The composite of claim 5 wherein the skin coat is embossed to a leather-like appearance.
Claim 9
Dependent Claim
39 words
The composite of claim 7 wherein there is a base coat layer under the skin coat layer and the base coat has a pigment, dye or color therein or has a pigmented, dyed or colored toning coat associated therewith.
Claim 10
Dependent Claim
15 words
The composite of claim 1 wherein the skin coat layer has a polish coat thereover.
Claim 11
Dependent Claim
28 words
The composite of claim 1 wherein the substrate and polymeric composition contain heat and pressure deformable materials, and the substrate and polymeric composition are heat and pressure deformed.
Claim 12
Dependent Claim
14 words
The composite of claim 1 having a thickness of from 25 to 210 mils.
Claim 13
Dependent Claim
14 words
The composite of claim 11 wherein the thickness is from 30 to 125 mils.
Claim 14
Dependent Claim
23 words
The composition of claim 1 wherein the polymeric composition is contained in the substrate in amounts between 10 and 140 grams/ft 2 .
Claim 15
Dependent Claim
32 words
The composite of claim 1 wherein the coherent network of entangled fibers includes some of the fibers being oriented into rows of fiber chain entanglement, the rows extending lengthwise of the structure.
Claim 16
Dependent Claim
21 words
The composite of claim 1, wherein the overall bulk density of the substrate is at least 8 pounds per cubic foot.
Claim 17
Dependent Claim
21 words
The composite of claim 1 wherein the overall bulk density of the substrate is at least 12 pounds per cubic foot.
Claim 18
Dependent Claim
15 words
The composite of claim 1 having from 8,000 to 25,000 needle punches per square inch.
Claim 19
Dependent Claim
31 words
The composition of claim 1 wherein there is at least 30% more polymeric composition between the face surface and the geometric center than between the back surface and the geometric center.
Claim 20
Dependent Claim
31 words
The composition of claim 1 wherein there is at least 40% more polymeric composition between the face surface and the geometric center than between the back surface and the geometric center.
Claim 21
Dependent Claim
31 words
The composition of claim 1 wherein there is at least 50% more polymeric composition between the face surface and the geometric center than between the back surface and the geometric center.
Claim 22
Dependent Claim
20 words
The composition of claim 1 wherein the said thickness of the co-compacted substrate and polymeric composition is less than 0.65.
Claim 23
Independent Claim
179 words
A method for producing a non-woven textile composite which simulates the strength, durability, appearance, temper, smooth surface, break, hand and feel of natural leather comprising: (a) forming a web of loosely matted essentially uniform textile fibers with substantially no needle pick-up gradient; (b) needling the web sufficiently to produce a textile fabric substrate having a coherent network of randomly entangled fibers having an as needled overall bulk density of at least 6 pounds/cubic foot with a face surface and a back surface and a geometric center therebetween; (c) differentially disposing in the so-produced and essentially uncompacted substrate a polymeric composition such that there is at least 25% more polymeric composition between the face surface and the geometric center than between the back surface and the geometric center; (d) immobilizing the polymeric composition and loosely adhering the composition to the fibers of the substrate; (e) subjecting the substrate and immobilized polymeric composition to sufficient co-compaction such that the co-compacted substrate and immobilized polymeric composition are compacted to a thickness less than 0.75 the thickness thereof in the essentially uncompacted state.
Claim 24
Independent Claim
179 words
A method for producing a non-woven textile composite which simulates the strength, durability, appearance, temper, smooth surface, break, hand and feel of natural leather comprising: (a) forming a web of loosely matted essentially uniform textile fibers with substantially no needle pick-up gradient; (b) needling the web sufficiently to produce a textile fabric substrate having a coherent network of randomly entangled fibers having an as needled overall bulk density of at least 6 pounds/cubic foot with a face surface and a back surface and a geometric center therebetween; (c) differentially disposing in the so-produced and essentially uncompacted substrate a polymeric composition such that there is at least 25% more polymeric composition between the face surface and the geometric center than between the back surface and the geometric center; (d) immobilizing the polymeric composition and loosely adhering the composition to the fibers of the substrate; (e) subjecting the substrate and immobilized polymeric composition to sufficient co-compaction such that the co-compacted substrate and immobilized polymeric composition are compacted to a thickness less than 0.75 the thickness thereof in the essentially uncompacted state.
Claim 25
Dependent Claim
35 words
The method of claim 22 wherein a filler is essentially uniformly impregnated throughout the substrate prior to disposing the polymeric composition in the substrate whereby the leather-like hand and feel of the substrate is increased.
Claim 26
Dependent Claim
19 words
The method of claim 22 wherein a skin coat is disposed on the face surface after the said compaction.
Claim 27
Dependent Claim
17 words
The method of claim 24 wherein the skin coat is embossed to a texture which is leather-like.
Claim 28
Dependent Claim
17 words
The method of claim 24 wherein a polish coat layer is applied over the sin coat layer.
Claim 29
Dependent Claim
45 words
The method of claim 24 wherein the substrate and polymeric composition are heat and pressure deformable, and the substrate and polymeric composition are heated and pressure is applied thereto to deform and compact the substrate and polymeric composition prior to applying the skin coat layer.
Claim 30
Dependent Claim
19 words
The method of claim 24 wherein the thickness of the skin coat layer is between 2 and 20 mils.
Claim 31
Dependent Claim
24 words
The method of claim 24 wherein the skin coat layer is contained on the substrate in an amount of between 2 and 10 mils.
Claim 32
Dependent Claim
44 words
The method of claim 23 wherein the filler is impregnated in an amount of between 5% and 200% of the weight of the fibers in the substrate to provide a bulk density of the structure of between 12 and 45 pounds per cubic foot.
Claim 33
Dependent Claim
41 words
The method of claim 22 wherein a base coat layer is applied under the skin coat layer and the base coat layer has a pigment, dye or color therein or wherein a pigmented, dyed or colored toning coat is associated therewith.
Claim 34
Dependent Claim
20 words
The method of claim 22 wherein the thickness of the deformed and compacted substrate is from 20 to 200 mils.
Claim 35
Dependent Claim
14 words
The method of claim 32 wherein the thickness is from 30 to 125 mils.
Claim 36
Dependent Claim
24 words
The method of claim 22 wherein the polymeric composition is applied to the substrate at a rate between 10 and 140 grams/ft 2 .
Claim 37
Dependent Claim
31 words
The method of claim 22 wherein there is at least 30% more polymeric composition between the face surface and the geometric center than between the back surface and the geometric center.
Claim 38
Dependent Claim
31 words
The method of claim 22 wherein there is at least 40% more polymeric composition between the face surface and the geometric center than between the back surface and the geometric center.
Claim 39
Dependent Claim
31 words
The method of claim 22 wherein there is at least 50% more polymeric composition between the face surface and the geometric center than between the back surface and the geometric center.
Claim 40
Dependent Claim
20 words
The method of claim 22 wherein the said thickness of the co-compacted substrate and polymeric composition is less than 0.65.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |