US4818599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester fiberfill
Assignee: EIDP Inc
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Filing: 1988-04-13
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Granted: 1989-04-04
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Expires: 2008-04-13
Abstract
Abstract Blends of polyester fiberfill and binder fiber, wherein the fiberfill is coated with a hydrophilic poly(alkylene oxide) type finish that cures on to the polyester fibers and so provides improved properties in the eventual bonded product, including combinations of improved durability, soft hand, good bonding, reduced flammability and improved moisture transport.
Inventors
- 👤 Ilan Marcus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:27
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/507; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4326; D04H1/435; D04H1/4382; D04H1/43825; D04H1/43828; D04H1/43835; D04H1/4391; D04H1/43914; D04H1/43918; D04H1/54; D06M15/53; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/29; Y10T428/2904; Y10T428/2905; Y10T428/2909; Y10T428/2913; Y10T428/2929; Y10T428/2933; Y10T428/2938; Y10T442/00; Y10T442/60; Y10T442/603; Y10T442/607; Y10T442/608; Y10T442/627; Y10T442/629; Y10T442/637; Y10T442/641
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
80 words
An improved polyester fiberfill blend consisting essentially of, by weight, (a) from about 60 to about 95% of crimped polyester staple fiber, and (b) complementally, to total 100%, from about 5 to about 40% of crimped staple binder fiber, comprising a polymer having a binding temperature lower than the softening temperature of the said polyester staple fiber, characterized in that the said polyester stable fiber has a coating cured thereto of a slickener consisting essentially of chains of poly(alkylene oxide).
Claim 2
Dependent Claim
80 words
An improved polyester fiberfill blend consisting essentially of, by weight, (a) from about 60 to about 95% of crimped polyester staple fiber, and (b) complementally, to total 100%, from about 5 to about 40% of crimped staple binder fiber, comprising a polymer having a binding temperature lower than the softening temperature of the said polyester staple fiber, characterized in that the said polyester stable fiber has a coating cured thereto of a slickener consisting essentially of chains of poly(alkylene oxide).
Claim 3
Dependent Claim
40 words
A blend according to claim 1, characterized in that the polyester staple fiber is coated with a segmented copolymer of poly(ethylene terephthalate) and poly(ethylene oxide) in amount from about 0.1 to about 1% by weight of the polyester staple fiber.
Claim 4
Dependent Claim
42 words
A blend according to claim 1, characterized in that the polyester staple fiber is coated with a modified poly(alkylene oxide) grafted with functional groups to permit crosslinking, in amount from about 0.1 to about 1% by weight of the polyester staple fiber.
Claim 5
Dependent Claim
36 words
A blend according to claim 1, 2 or 3, characterized in that the polyester staple fiber is coated with the slickener in amount from about 0.15% to about 0.6% by weight of the polyester staple fiber.
Claim 6
Dependent Claim
35 words
A through-bonded batt of polyester fiberfill of improved durability, and moisture transport, soft bonding, and low flammability, characterized in that the polyester fibers are coated with a slickener consisting essentially of chains of poly(alkylene oxide).
Claim 7
Dependent Claim
35 words
A through-bonded batt of polyester fiberfill of improved durability, and moisture transport, soft bonding, and low flammability, characterized in that the polyester fibers are coated with a slickener consisting essentially of chains of poly(alkylene oxide).
Claim 8
Dependent Claim
38 words
A batt according to claim 5, characterized in that the polyester fibers are coated with a segmented copolymer of poly(ethylene terephthalate) and poly(ethylene oxide) in amount from about 0.1 to about 1% by weight of the polyester fiber.
Claim 9
Dependent Claim
40 words
A batt according to claim 5, characterized in that the polyester fibers are coated with a modified poly(alkylene oxide) grafted with functional groups to permit crosslinking, in amount from about 0.1 to about 1% by weight of the polyester fiber.
Claim 10
Dependent Claim
33 words
A batt according to claim 6 or 7, characterized in that the polyester fibers are coated with the slickener in amount from about 0.15% to about 0.6% by weight of the polyester fiber.
Claim 11
Dependent Claim
60 words
A process for preparing a bonded batt of polyester fiberfill, wherein polyester fiber having a coating cured thereto of a slickener consisting essentially of chains of poly(alkylene oxide) is blended with binder fiber, the blend is formed into a batt, and the batt is heat-treated to cause the binder fiber to effect bonding at intersections of the coated polyester fiberfill.
Claim 12
Dependent Claim
60 words
A process for preparing a bonded batt of polyester fiberfill, wherein polyester fiber having a coating cured thereto of a slickener consisting essentially of chains of poly(alkylene oxide) is blended with binder fiber, the blend is formed into a batt, and the batt is heat-treated to cause the binder fiber to effect bonding at intersections of the coated polyester fiberfill.
Claim 13
Dependent Claim
38 words
A process according to claim 9, characterized in that the binder fibers are sheath/core fibers, whereby the sheath provides binder and the core remains in the bonded batt to provide points for bonding with the coated polyester fiberfill.
Claim 14
Dependent Claim
27 words
A process according to claim 9, characterized in the monocomponent binder fibers are used, whereby the binder bonds the coated polyester fiberfill at the cross over points.
Claim 15
Dependent Claim
41 words
A process according to claim 9, 10 or 11, characterized in that the polyester fiber is coated with a segmented copolymer of poly(ethylene terephthalate) and poly(ethylene oxide) in amount from about 0.1 to about 1% by weight of the polyester fiber.
Claim 16
Dependent Claim
43 words
A process according to claim 9, 10 or 11, characterized in that the polyester fiber is coated with a modified poly(alkylene oxide) grafted with functional groups to permit crosslinking, in amount from about 0.1 to about 1% by weight of the polyester fiber.
Claim 17
Dependent Claim
41 words
A process according to claim 9, 10, or 11, characterized in that the polyester fiber is coated with a segmented copolymer of poly(ethylene terephthalate) and poly(ethylene oxide) in amount from about 0.15 to about 0.6% by weight of the polyester fiber.
Claim 18
Dependent Claim
43 words
A process according to claim 9, 10 or 11, characterized in that the polyester fiber is coated with a modified poly(alkylene oxide) grafted with functional groups to permit crosslinking, in amount from about 0.15 to about 0.6% by weight of the polyester fiber.
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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) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |