Patent US4481256A successfully refreshed from Google Patents.
US4481256A
Expired / Lapsed
US
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Wadding materials
Assignee: Kanebo Ltd
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Filing: 1983-05-11
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Granted: 1984-11-06
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Expires: 2003-05-11
Abstract
Abstract Wadding materials suitable for bedclothes and clothes and having high bulkiness and compressibility, excellent bulkiness recovery, light weight and high warmth retaining ability, which consist of a blend of 80-20% by weight of staple fibers (A) having a monofilament fineness of 3-10 deniers and a curliness of not less than 15% and 20-80% by weight of synthetic polymer staple fibers (B) having a monofilament fineness of 0.7-4 deniers which is smaller than that of the staple fibers (A) and a curliness of less than 15%.
Inventors
- 👤 Yugoro Masuda
- 👤 Toyokazu Nonaka
- 👤 Shigeru Kawase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:07
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4282; D04H1/4291; D04H1/4326; D04H1/4334; D04H1/435; D04H1/4382; D04H1/43825; D04H1/43828; D04H1/43832; D04H1/43835; D04H1/4391; D04H1/43914; D04H1/43918; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2909; Y10T428/2913; Y10T428/2922; Y10T428/2924; Y10T428/2973; Y10T428/2975; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/609; Y10T442/612; Y10T442/627; Y10T442/629
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
152 words
A wadding material having high bulkiness, high compressibility, excellent recovery of bulkiness following compression, light weight and high warmth-retaining ability consisting essentially of a blend of (1) 80% to 20% by weight of staple fibers (A) having a monofilament fineness in the range of from 4 to 10 deniers and having a curliness of from not less than 15% up to about 30%; (2) 20% to 80% by weight of staple fibers (B) made of a synthetic polymer and having a monofilament fineness in the range of from 0.7 to 4 deniers and lower than the fineness of said staple fibers (A), said staple fibers (B) having a curliness of less than 15%, in which the curliness of said staple fibers (A) and (B) is equal to (B-A)/B×100%, wherein A is the fiber length under a load of 2 mg/denier and B is the fiber length under a load of 50 mg/denier.
Claim 2
Dependent Claim
152 words
A wadding material having high bulkiness, high compressibility, excellent recovery of bulkiness following compression, light weight and high warmth-retaining ability consisting essentially of a blend of (1) 80% to 20% by weight of staple fibers (A) having a monofilament fineness in the range of from 4 to 10 deniers and having a curliness of from not less than 15% up to about 30%; (2) 20% to 80% by weight of staple fibers (B) made of a synthetic polymer and having a monofilament fineness in the range of from 0.7 to 4 deniers and lower than the fineness of said staple fibers (A), said staple fibers (B) having a curliness of less than 15%, in which the curliness of said staple fibers (A) and (B) is equal to (B-A)/B×100%, wherein A is the fiber length under a load of 2 mg/denier and B is the fiber length under a load of 50 mg/denier.
Claim 3
Dependent Claim
33 words
A wadding material as claimed in claim 1, wherein the monofilament fineness of said staple fibers (A) is 4-7 deniers, and the curliness of said staple fibers (A) is not less than 18%.
Claim 4
Dependent Claim
23 words
A wadding material as claimed in claim 1 or claim 2, wherein the fiber length of said staple fibers (A) is 20-120 mm.
Claim 5
Dependent Claim
22 words
A wadding material as claimed in claim 1, wherein said staple fibers (A) are synthetic fibers of polyamides, polyesters, polyethylene or polypropylene.
Claim 6
Dependent Claim
25 words
A wadding material as claimed in claim 1, claim 2 or claim 4, wherein the monofilament fineness of said staple fibers (B) is 1-3 deniers.
Claim 7
Dependent Claim
25 words
A wadding material as claimed in claim 1, claim 2 or claim 4, wherein the curliness of said staple fibers (B) is less than 10%.
Claim 8
Dependent Claim
25 words
A wadding material as claimed in claim 1, claim 2 or claim 4, wherein the fiber length of said staple fibers (B) is 20-200 mm.
Claim 9
Dependent Claim
27 words
A wadding material as claimed in claim 1, claim 2 or claim 4, wherein said staple fibers (B) are synthetic fibers of polyamides, polyesters, polyethylene or polypropylene.
Claim 10
Dependent Claim
31 words
A wadding material as claimed in claim 1, consisting essentially of a blend of 80-30% by weight of said staple fibers (A) and 20-70% by weight of said staple fibers (B).
Claim 11
Dependent Claim
25 words
A wadding material as claimed in claim 1, wherein one or both of said staple fibers (A) and said staple fibers (B) are polyester fibers.
Claim 12
Dependent Claim
33 words
A wadding material as claimed in claim 1, wherein one or both of said staple fibers (A) and said staple fibers (B) has a static friction coefficient between fibers of less than 0.20.
Claim 13
Dependent Claim
25 words
A wadding material according to claim 1, wherein said staple fibers (A) are composite hollow fibers having a hollow space percentage of 5 to 30%.
Claim 14
Dependent Claim
44 words
A wadding material as claimed in claim 1, wherein the fiber lengths of said staple fibers (A) are in the range of 50 to 76 mm, and the fiber lengths of said staple fibers (B) are in the range of 30 to 48 mm.
Claim 15
Dependent Claim
27 words
A wadding material as claimed in claim 1, consisting of 70-30% by weight of said staple fibers (A) and 30-70% by weight of said staple fibers (B).
Claim 16
Dependent Claim
24 words
A wadding material as claimed in claim 1, wherein the curliness of said staple fibers (B) is in the range of 4.7% to 6.8%.
Claim 17
Dependent Claim
127 words
A wadding material having high bulkiness, high compressibility, excellent recovery of bulkiness following compression, light weight and high warmth-retaining ability consisting of a blend of (1) from 70% to 40% by weight of polyester staple fibers (A) having a monofilament fineness in the range of 4 to 7 deniers and a curliness of from not less than 18% up to 30%; and (2) from 30% to 60% by weight of polyester staple fibers (B) having a monofilament fineness in the range of from 1 to 3 deniers and having a curliness of less than 10%, in which curliness (%) is equal to (B-A)/B×100, wherein A is the fiber length under a load of 2 mg/denier and B is the fiber length under a load of 50 mg/denier.
Claim 18
Dependent Claim
127 words
A wadding material having high bulkiness, high compressibility, excellent recovery of bulkiness following compression, light weight and high warmth-retaining ability consisting of a blend of (1) from 70% to 40% by weight of polyester staple fibers (A) having a monofilament fineness in the range of 4 to 7 deniers and a curliness of from not less than 18% up to 30%; and (2) from 30% to 60% by weight of polyester staple fibers (B) having a monofilament fineness in the range of from 1 to 3 deniers and having a curliness of less than 10%, in which curliness (%) is equal to (B-A)/B×100, wherein A is the fiber length under a load of 2 mg/denier and B is the fiber length under a load of 50 mg/denier.
Claim 19
Dependent Claim
158 words
A wadding material having high bulkiness, high compressibility, light weight and high warmth-retaining ability consisting of a blend of (1) from 70% to 30% by weight of staple fibers (A) selected from polyamides, polyesters, polyethylene and polypropylene, said staple fibers (A) having a monofilament fineness in the range of 4 to 7 deniers, a curliness of from 15.8% to 26.9%, and a fiber length in the range of 50 to 76 mm; and (2) from 30% to 70% by weight of staple fibers (B) selected from polyamides, polyesters, polyethylene and polypropylene, said staple fibers (B) having a monofilament fineness in the range of 1 to 3 deniers, a curliness of from 0.2% to 14.1%, and a fiber length in the range of 30 to 48 mm, in which curliness (%) is equal to (B-A)/B×100, wherein A is the fiber length under a load of 2 mg/denier and B is the fiber length under a load of 50 mg/denier.
Claim 20
Dependent Claim
158 words
A wadding material having high bulkiness, high compressibility, light weight and high warmth-retaining ability consisting of a blend of (1) from 70% to 30% by weight of staple fibers (A) selected from polyamides, polyesters, polyethylene and polypropylene, said staple fibers (A) having a monofilament fineness in the range of 4 to 7 deniers, a curliness of from 15.8% to 26.9%, and a fiber length in the range of 50 to 76 mm; and (2) from 30% to 70% by weight of staple fibers (B) selected from polyamides, polyesters, polyethylene and polypropylene, said staple fibers (B) having a monofilament fineness in the range of 1 to 3 deniers, a curliness of from 0.2% to 14.1%, and a fiber length in the range of 30 to 48 mm, in which curliness (%) is equal to (B-A)/B×100, wherein A is the fiber length under a load of 2 mg/denier and B is the fiber length under a load of 50 mg/denier.
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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) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |