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US4281042A Expired / Lapsed US ⏱️ 0.0 years remaining

Polyester fiberfill blends

Assignee: EIDP Inc
•
Filing: 1979-08-30
•
Granted: 1981-07-28
•
Expires: 1999-08-30
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Abstract

Abstract A fiberfill blend for making into a batt for heat-bonding, consisting essentially of three ingredients: (a) two of the ingredients are crimped polyester staple fiber; (1) one of these polyester fiberfill ingredients is slickened with a durable coating; (2) the other of these polyester fiberfill ingredients is unslickened; each of ingredients (1) and (2) constitutes 25 to 75% of the polyester fiberfill (a); (b) the third ingredient is crimped binder fiber of a polymer having a melting point lower than that of the (a) ingredients; the binder fiber is present in amount 10 to 30% of the blend; the remaining 70 to 90% of the blend is the polyester fiberfill. Such blends can be processed on conventional textile machinery, e.g., by carding and cross-lapping, and heated to activate the binder fibers and make a stable heat-bonded batt. Preferred batts, using polyester staple fibers of regular denier, have surprisingly high resilience, which makes them especially suitable for use in pillows and cushions.

Inventors

  • 👤 Georges Pamm

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 20:56
CPC Classifications
D; 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; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2907; Y10T428/2909; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/627; Y10T442/635; Y10T442/636

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 83 words
A polyester fiberfill blend consisting essentially of (a) from about 70 to about 90% by weight of crimped polyester staple fiber and (b) complementally, to total 100% by weight, from about 10 to about 30% of crimped staple binder fiber of a polymer having a melting point lower than that of said polyester fiber, wherein from about 25 to about 75% by weight of said polyester fiber is slickened with a cured polysiloxane coating and the remainder of said polyester fiber is unslickened.
Claim 2
Dependent Claim 83 words
A polyester fiberfill blend consisting essentially of (a) from about 70 to about 90% by weight of crimped polyester staple fiber and (b) complementally, to total 100% by weight, from about 10 to about 30% of crimped staple binder fiber of a polymer having a melting point lower than that of said polyester fiber, wherein from about 25 to about 75% by weight of said polyester fiber is slickened with a cured polysiloxane coating and the remainder of said polyester fiber is unslickened.
Claim 3
Dependent Claim 13 words
A blend according to claim 1, wherein said polyester fiber is poly(ethylene terephthalate).
Claim 4
Dependent Claim 33 words
A blend according to claim 1 or 2, wherein the binder fiber is of an ethylene terephthalate/isophthalate copolyester having a terephthalate/isophthalate molar ratio of 65-75/35-25 and a stick temperature of about 90° C.
Claim 5
Dependent Claim 19 words
A blend according to claim 1 or 2, wherein the fibers are of denier about 0.5 to about 15.
Claim 6
Dependent Claim 20 words
A blend according to claim 1 or 2, wherein said polyester fiber is of denier about 4 to about 6.
Claim 7
Dependent Claim 70 words
A blend according to claim 1, consisting essentially of about 20 to 25% by weight of said binder fiber of denier about 0.5 to about 6, about 25 to 40% by weight of said polyester fiber that is unslickened and of denier about 4 to about 6, and the remainder being said polyester fiber that is slickened with a cured polysiloxane coating and of denier about 4 to about 6.
Claim 8
Dependent Claim 52 words
A blend according to claim 6, wherein said polyester fiber is of poly(ethylene terephthalate) and of denier about 5.5, and said binder fiber is of an ethylene terephthalate/isophthalate copolymer having a terephthalate/isophthalate mole ratio of 70/30 and a stick temperature of about 90° C. and of denier about 0.5 to about 6.

References Cited (Backward Citations)

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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) 1984-07-27 1985-01-26 1985-07-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-07-27 1989-01-26 1989-07-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-07-27 1993-01-26 1993-07-28 $7700.00 Window Closed / Lapsed

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