US3643301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an elastic stitch-bonded fabric
Assignee: Vyzkumny Ustav Zuslechtovaci
•
Filing: 1968-06-10
•
Granted: 1972-02-22
•
Expires: 1988-06-10
Abstract
Abstract A fibrous web is stitch-bonded in an atlas construction which is elastic in two directions whereupon the web is tensioned in one direction thereof. The web contracts and is crimped by the stitches in the respective other direction, and is treated to make the crimp permanent so that the finished fabric is expansible in the crimped direction.
Inventors
- 👤 Bedrich Weigl
- 👤 Milos Janku
- 👤 Milos Prikryl
- 👤 Jaroslav Hubeny
- 👤 Milos Hofman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:15
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/425; D04H1/4258; D04H1/4266; D04H1/4326; D04H1/435; D04H1/44; D04H1/50; D04H1/52; D04H1/58; D04H1/64; D04H1/645
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
37 words
The method of claim 1 wherein said web consists of cellulosic fibers; and wherein treating of said web includes treating said web with a swelling agent to crimp said web, stabilizing the crimp, and drying the fabric.
Claim 2
Dependent Claim
25 words
The method of claim 2 wherein said web consists of cotton fibers; and said swelling agent includes sodium hydroxide concentrated between 25* and 34* Be.
Claim 3
Dependent Claim
27 words
The method of claim 2 wherein said web consists of viscose staple fibers; and wherein said swelling agent includes sodium hydroxide concentrated between 0* and 7* Be.
Claim 4
Dependent Claim
27 words
The method of claim 1 wherein said web is made of synthetic staple fibers; and wherein said treating of said web includes heating and plastifying said web.
Claim 5
Dependent Claim
11 words
The method of claim 5 wherein said fibers are polyester fibers.
Claim 6
Dependent Claim
42 words
The method of claim 1 wherein said web is made of synthetic staple fibers; and wherein said treating of the web includes heating the web to a temperature and for a time to plastify said synthetic staple fibers; and cooling the web.
Claim 7
Dependent Claim
48 words
The method of claim 1 wherein said web consists of cellulosic fibers; and wherein said treating of said stitch-bonded web includes treating said stitch-bonded web with a swelling agent to crimp said web, impregnating said web with a solution of a reactive precondensate, and drying said stitch-bonded web.
Claim 8
Dependent Claim
22 words
The method of claim 8 wherein said reactive precondensate is selected from the group consisting of ethylene urea, propylene urea, and triazones.
Claim 9
Dependent Claim
48 words
The method of claim 1 wherein said web consists of cellulosic fibers; and wherein said treating of said stitch-bonded web includes treating said stitch-bonded web with a swelling agent to crimp said web, impregnating said web with a solution of a nonreactive precondensate, and drying said stitch-bonded web.
Claim 10
Dependent Claim
24 words
The method of claim 10 wherein said nonreactive precondensate is selected from the group consisting of precondensates on the basis of urea and triazines.
Claim 11
Dependent Claim
26 words
The method of claim 1 wherein said binding has alternate stripes, each stripe comprising wales oppositely slanted relative to the wales of the respective adjacent stripe.
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |