US5270107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High loft nonwoven fabrics and method for producing same
Assignee: Fitesa Simpsonville Inc
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Filing: 1992-04-16
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Granted: 1993-12-14
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Expires: 2012-04-16
Abstract
Abstract A nonwoven filamentary web having high loft is produced by extruding a molten thermoplastic polymer or polymer blend through a spinneret to form continuous filaments while maintaining extrusion conditions which induce melt-fracture of the extrudate; attenuating the thus extruded melt-fractured filaments to obtain filamentary material having a crimped structure; and depositing the melt-fractured filamentary material on a collection surface and forming a web therefrom.
Inventors
- 👤 Scott L. Gessner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:15
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/56; D04H3/00; D04H3/08; D04H3/16; B01D2239/00; B01D2239/06; B01D2239/0604; B01D2239/0627; B01D2239/064; B01D2239/065; B01D2239/12; B01D2239/1291; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/627; Y10T442/632; Y10T442/681; Y10T442/69
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
35 words
A spunbonded nonwoven fabric having a caliper of at least about 0.019"/ounce/yd 2 using a 95 g/in 2 compression force and comprising attenuated crimped continuous filaments of a melt-fractured thermoplastic polymer or thermoplastic polymer blend.
Claim 2
Dependent Claim
35 words
A spunbonded nonwoven fabric having a caliper of at least about 0.019"/ounce/yd 2 using a 95 g/in 2 compression force and comprising attenuated crimped continuous filaments of a melt-fractured thermoplastic polymer or thermoplastic polymer blend.
Claim 3
Dependent Claim
36 words
A spunbonded nonwoven fabric according to claim 1 wherein said thermoplastic polymer or thermoplastic polymer blend comprises one or more members selected from the group consisting of polyester, acrylic polymer, polyamide, and polyolefin polymers or copolymers.
Claim 4
Dependent Claim
16 words
A spunbonded nonwoven fabric according to claim 1 wherein said crimped filaments are formed of polypropylene.
Claim 5
Dependent Claim
41 words
A spunbonded nonwoven fabric according to claim 1 also including other fibers selected from the group consisting of cotton fibers, wool fibers, silk fibers, wood pulp, rayon fibers, acrylic fibers, polyamide fibers, polyolefin fibers, and copolymers and blends of the same.
Claim 6
Dependent Claim
42 words
A spunbonded nonwoven fabric comprising a web having a caliper of at least about 0.019"/ounce/yd 2 using a 95 g/in 2 compression force wherein the web comprises bonded thermoplastic attenuated crimped continuous filaments extruded under conditions which induce melt-fracture of the extrudate.
Claim 7
Dependent Claim
42 words
A spunbonded nonwoven fabric comprising a web having a caliper of at least about 0.019"/ounce/yd 2 using a 95 g/in 2 compression force wherein the web comprises bonded thermoplastic attenuated crimped continuous filaments extruded under conditions which induce melt-fracture of the extrudate.
Claim 8
Dependent Claim
27 words
Attenuated crimped continuous filaments formed of a melt-fractured thermoplastic polymer or thermoplastic polymer blend and having a loft of from about 55 cc/g to about 100 cc/g.
Claim 9
Dependent Claim
27 words
Attenuated crimped continuous filaments formed of a melt-fractured thermoplastic polymer or thermoplastic polymer blend and having a loft of from about 55 cc/g to about 100 cc/g.
Claim 10
Dependent Claim
54 words
A composite nonwoven fabric comprising a plurality of layers, at least one of said layers comprising a spunbonded nonwoven web having a caliper of at least about 0.019"/ounce/yd 2 using a 95 g/in 2 compression force wherein the web comprises bonded thermoplastic attenuated crimped filaments extruded under conditions which induce melt-fracture of the extrudate.
Claim 11
Dependent Claim
54 words
A composite nonwoven fabric comprising a plurality of layers, at least one of said layers comprising a spunbonded nonwoven web having a caliper of at least about 0.019"/ounce/yd 2 using a 95 g/in 2 compression force wherein the web comprises bonded thermoplastic attenuated crimped filaments extruded under conditions which induce melt-fracture of the extrudate.
Claim 12
Dependent Claim
19 words
A composite nonwoven fabric according to claim 7 wherein at least one of the layers comprises an absorbent layer.
Claim 13
Dependent Claim
20 words
A composite nonwoven fabric according to claim 7 wherein at least one of the layers comprises a moisture impermeable layer.
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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) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |