US4091140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous filament nonwoven fabric and method of manufacturing the same
Assignee: JPMorgan Chase Bank NA
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Filing: 1976-05-10
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Granted: 1978-05-23
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Expires: 1996-05-10
Abstract
Abstract A new continuous filament nonwoven fabric wherein: a portion of the filaments are substantially randomly deposited, at least partially molecularly oriented crystalline synthetic polymer filaments; and another portion of the filaments are cross-linked polymerized materials which act as a bonding agent for the fabric.
Inventors
- 👤 Carlyle Harmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:31
CPC Classifications
D; D06; D06M; D06M14/00; D06M14/18; D04; D04H; D04H3/00; D04H3/08; D04H3/16; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31794; Y10T442/00; Y10T442/60; Y10T442/681
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
94 words
A new nonwoven fabric comprising a layer of substantially continuous, randomly disposed, filaments, a portion of said filaments being at least partially molecularly oriented, crystalline, synthetic polymer and another portion of said filaments being electron beam radiation cross-linked polymerized materials selected from the class consisting of the unsaturated polyester polymers, the unsaturated polyurethane polymers, the unsaturated epoxy bis-phenol A resins, modified silicones, unsaturated acrylate copolymers, block copolymers of styrene and butadiene and mixtures thereof, said cross-linked polymerized filaments being bonded to each other and to said molecularly oriented filaments to produce a unitary web.
Claim 2
Dependent Claim
94 words
A new nonwoven fabric comprising a layer of substantially continuous, randomly disposed, filaments, a portion of said filaments being at least partially molecularly oriented, crystalline, synthetic polymer and another portion of said filaments being electron beam radiation cross-linked polymerized materials selected from the class consisting of the unsaturated polyester polymers, the unsaturated polyurethane polymers, the unsaturated epoxy bis-phenol A resins, modified silicones, unsaturated acrylate copolymers, block copolymers of styrene and butadiene and mixtures thereof, said cross-linked polymerized filaments being bonded to each other and to said molecularly oriented filaments to produce a unitary web.
Claim 3
Dependent Claim
37 words
A nonwoven fabric according to claim 1 wherein the partially molecularly oriented, crystalline, synthetic polymer forms from about 50 to 95 percent by weight of the fabric and the remainder of the fabric is cross-linked, polymerized material.
Claim 4
Dependent Claim
25 words
A nonwoven fabric according to claim 1 wherein the partially molecularly oriented, crystalline, synthetic polymer filaments have a denier of from about 1 to 5.
Claim 5
Dependent Claim
18 words
A nonwoven fabric according to claim 1 wherein the partially molecularly oriented, crystalline, synthetic polymer is a polyester.
Claim 6
Dependent Claim
18 words
A nonwoven fabric according to claim 1 wherein the partially molecularly oriented, crystalline, synthetic polymer is a polyamide.
Claim 7
Dependent Claim
18 words
A nonwoven fabric according to claim 1 wherein the partially molecularly oriented, crystalline, synthetic polymer is a polyolefin.
Claim 8
Dependent Claim
28 words
A nonwoven fabric according to claim 1 wherein the partially molecularly oriented, crystalline, synthetic polymer is a polyester and the cross-linked polymerized material is an unsaturated polyester polymer.
Claim 9
Independent Claim
141 words
A method of producing a spunbond fabric comprising; simultaneously extruding a synthetic fiber-forming, molecularly orientable polymer and a cross-linkable polymerizable material selected from the class consisting of the unsaturated polyester polymers, the unsaturated polyurethane polymers, the unsaturated epoxy bis-phenol A resins, modified silicones, unsaturated acrylate copolymers, block copolymers of styrene and butadiene, and mixtures thereof, said polymers being extruded through a spinnerette to form filaments with the cross-linkable polymerizable material being extruded in orifices uniformly disposed amongst orifices extruding said fiber-forming polymer, drawing said fiber-forming polymer filaments to at least partially orient said filaments, collecting both the fiber-forming polymer filaments and the other filaments on a permeable movable conveyor in web form containing randomly disposed filaments and treating said web with electron beam radiation to cross-link the cross-linkable polymer and bond the filaments together to produce a strong, durable, nonwoven fabric.
Claim 10
Independent Claim
141 words
A method of producing a spunbond fabric comprising; simultaneously extruding a synthetic fiber-forming, molecularly orientable polymer and a cross-linkable polymerizable material selected from the class consisting of the unsaturated polyester polymers, the unsaturated polyurethane polymers, the unsaturated epoxy bis-phenol A resins, modified silicones, unsaturated acrylate copolymers, block copolymers of styrene and butadiene, and mixtures thereof, said polymers being extruded through a spinnerette to form filaments with the cross-linkable polymerizable material being extruded in orifices uniformly disposed amongst orifices extruding said fiber-forming polymer, drawing said fiber-forming polymer filaments to at least partially orient said filaments, collecting both the fiber-forming polymer filaments and the other filaments on a permeable movable conveyor in web form containing randomly disposed filaments and treating said web with electron beam radiation to cross-link the cross-linkable polymer and bond the filaments together to produce a strong, durable, nonwoven fabric.
Claim 11
Dependent Claim
27 words
A method according to claim 8 wherein the layer of filaments is heated and pressed to embed filaments together prior to being treated with electron beam radiation.
Claim 12
Dependent Claim
19 words
A method according to claim 9 wherein the web is further compressed after being treated with electron beam radiation.
Claim 13
Dependent Claim
26 words
A method according to claim 8 wherein the layer of filaments is treated with electron beam radiation in a dosage of from three to eight megarads.
Claim 14
Dependent Claim
31 words
A method according to claim 8 wherein approximately one out of every five orifices is fed with the cross-linked polymerizable material and the remaining orifices are feb with the fiber-forming polymer.
Claim 15
Dependent Claim
17 words
A method according to claim 8 wherein the cross-linkable polymerizable material includes a polyfunctional cross-linking monomer material.
Claim 16
Dependent Claim
42 words
A method according to claim 8 wherein the radiation used has a wave length of from 0.001 to 1 Angstrom, a frequency of 10 18 to 10 21 cycles per second, and an energy of 10 5 to 10 7 electron volts.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |