US4983450A
Expired / Lapsed
US
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Gas-permeable, waterproof nonwoven fabric and process for its production
Assignee: UNICHARM Corp 182 SHIMOBON KINSEI-CHO KAWANOE-SHI EHIME JAPAN A CORP OF JAPAN
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Filing: 1987-11-17
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Granted: 1991-01-08
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Expires: 2007-11-17
Abstract
Abstract PCT No. PCT JP87/00889 Sec. 371 Date Jul. 28, 1988 Sec. 102(e) Date Jul. 28, 1988 PCT Filed Nov. 17, 1987 PCT Pub. No. WO88/03870 PCT Pub. Date Jun. 2, 1988.A porous waterproof nonwoven fabric having a superior gas-permeability and waterproofness, capable of being produced at cheap cost under simple processing conditions and by means of simple processing equipments, having superior mechanical strengths and a good feeling and useful for disposable uses and a process for producing the fabric are provided, which fabric comprises a thermoplastic resin composition film comprising a thermoplastic resin and a specified quantity of a filler, the thermoplastic resin composition film having fine pores formed by calender processing.
Inventors
- 👤 Takeshi Yanagihara
- 👤 Tsugio Honda
- 👤 Makoto Nakano
- 👤 Hiroshi Kajino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:38
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/514; A61F13/51474; A61F13/51478; A61F13/5148; B32B27/18; B32B27/20; B32B5/00; B32B5/02; B32B5/022; D; D06; D06N; D06N3/00; D06N3/0043; D06N3/0054; D06N3/0056; D06N3/0061; D06N7/00; A61F13/51401; A61F2013/51441; A61F2013/51443; B32B2307/00; B32B2307/70; B32B2307/724; B32B2307/726; B32B2307/7265; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T442/00; Y10T442/60; Y10T442/674; Y10T442/699
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
77 words
A gas-permeable, waterproof nonwoven fabric which comprises a thermoplastic resin composition film comprising 100 parts by weight of a thermoplastic resin and 1 to 50 parts by weight of a filler, said filler being fine particles of an organic resin filler having the particle size of 1 to 50 microns selected from the group consisting of thermoplastic resins and thermosetting resins, and a nonwoven fabric, said thermoplastic resin composition film having fine pores formed by calendar processing.
Claim 2
Dependent Claim
77 words
A gas-permeable, waterproof nonwoven fabric which comprises a thermoplastic resin composition film comprising 100 parts by weight of a thermoplastic resin and 1 to 50 parts by weight of a filler, said filler being fine particles of an organic resin filler having the particle size of 1 to 50 microns selected from the group consisting of thermoplastic resins and thermosetting resins, and a nonwoven fabric, said thermoplastic resin composition film having fine pores formed by calendar processing.
Claim 3
Dependent Claim
36 words
A gas-permeable nonwoven fabric according to claim 1 wherein said thermoplastic resin is at least one member selected from the group consisting of acrylic resins, urethane resins, synthetic rubbers, ethylene-vinyl acetate copolymer resins one polyethylene resins.
Claim 4
Dependent Claim
30 words
A gas-permeable waterproof nonwoven fabric according to claim 1 wherein said filler is at least one member selected from the group consisting of fluorine resins, silicone resins, polyethylene and polypropylene.
Claim 5
Dependent Claim
46 words
A gas-permeable waterproof nonwoven fabric according to claim 1 wherein said nonwoven fabric is at least one member selected from the consisting of wet nonwoven fabric, spun-bonded nonwoven fabric, dry nonwoven fabric, stitch-bonded nonwoven fabric, needle-punched nonwoven fabric, spun rayon nonwoven fabric and hot-melt-adhesive nonwoven fabric.
Claim 6
Dependent Claim
35 words
A gas-permeable waterproof nonwoven fabric according to claim 1 wherein fibers constituting said nonwoven fabric are polyester fibers, nylon fibers, polyacrylic fibers, polyolefin fibers or rayon fibers, these fibers being used singly or in admixture.
Claim 7
Dependent Claim
80 words
A process for producing a gas-permeable waterproof nonwoven fabric, which process comprises subjecting to calender processing, a thermoplastic resin composition film comprising 100 parts by weight of a thermoplastic resin and 1 to 50 parts by weight of a filler, said filler being fine particles of an organic resin filler having the particle size of 1 to 50 microns selected from the group consisting of thermoplastic resins and thermosetting resins, followed by applying a nonwoven fabric onto the resulting film.
Claim 8
Dependent Claim
80 words
A process for producing a gas-permeable waterproof nonwoven fabric, which process comprises subjecting to calender processing, a thermoplastic resin composition film comprising 100 parts by weight of a thermoplastic resin and 1 to 50 parts by weight of a filler, said filler being fine particles of an organic resin filler having the particle size of 1 to 50 microns selected from the group consisting of thermoplastic resins and thermosetting resins, followed by applying a nonwoven fabric onto the resulting film.
Claim 9
Dependent Claim
80 words
A process for producing a gas-permeable waterproof nonwoven fabric, which process comprises applying a thermoplastic resin composition film comprising 100 parts by weight of a thermoplastic resin and 1 to 50 parts by weight of a filler onto a nonwoven fabric, said filler being fine particles of an organic resin filler having the particle size of 1 to 50 microns selected from the group consisting of thermoplastic resins and thermosetting resins, followed by subjecting the resulting material to calender processing.
Claim 10
Dependent Claim
80 words
A process for producing a gas-permeable waterproof nonwoven fabric, which process comprises applying a thermoplastic resin composition film comprising 100 parts by weight of a thermoplastic resin and 1 to 50 parts by weight of a filler onto a nonwoven fabric, said filler being fine particles of an organic resin filler having the particle size of 1 to 50 microns selected from the group consisting of thermoplastic resins and thermosetting resins, followed by subjecting the resulting material to calender processing.
Claim 11
Dependent Claim
80 words
A process for producing a gas-permeable waterproof nonwoven fabric, which process comprises coating a nonwoven fabric with a thermoplastic resin composition film comprising 00 parts by weight of a thermoplastic resin and 1 to 50 parts by weight of a filler, said filler being fine particles of an organic resin filler having the particle size of 1 to 50 microns selected from the group consisting of thermoplastic resins and thermosetting resins, followed by subjecting the resulting material to calender processing.
Claim 12
Dependent Claim
80 words
A process for producing a gas-permeable waterproof nonwoven fabric, which process comprises coating a nonwoven fabric with a thermoplastic resin composition film comprising 00 parts by weight of a thermoplastic resin and 1 to 50 parts by weight of a filler, said filler being fine particles of an organic resin filler having the particle size of 1 to 50 microns selected from the group consisting of thermoplastic resins and thermosetting resins, followed by subjecting the resulting material to calender processing.
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) | 1994-01-07 | 1994-07-09 | 1995-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-07 | 1998-07-09 | 1999-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-07 | 2002-07-09 | 2003-01-08 | $7700.00 | Window Closed / Lapsed |