Patent US4238175A successfully refreshed from Google Patents.
US4238175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melt blowing apparatus
Assignee: Tonen General Sekiyu KK
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Filing: 1978-03-02
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Granted: 1980-12-09
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Expires: 1998-03-02
Abstract
Abstract A process and apparatus are provided for the production of a non-woven fabric by melt-blowing wherein one or more yarns, e.g. monofilaments, are added or charged into the fabric stream between the extruder and collector by means of a supporting and drawing pressure gas stream. In one embodiment means are provided to regulate flow of the gas stream in another embodiment means are provided to reciprocate or to rotate through a small arc the one or more charging means.
Inventors
- 👤 Shigeo Fujii
- 👤 Tokuzo Ikeda
- 👤 Takashi Mikami
- 👤 Shuji Okano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:42
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; D01D5/098; D01D5/0985; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/56; D04H3/00; D04H3/08; D04H3/16; Y; Y10; Y10S; Y10S264/00; Y10S264/75
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
An apparatus for the production of a non-woven structure, which comprises means for blowing a thermoplastic resin to form a fiber stream consisting of fine thermoplastic resin fibers with a hot gas, means for collecting the fiber stream arranged apart from the thermoplastic resin blowing means, and spaced apart from the fiber stream a distance from about 10 to about 1000 mm means having a yarn path, two gas paths at varying angles to the yarn path and movable spacer means for changing the angles of the gas passing through the gas path for charging a continuous yarn at a rate of 30 to 40 m/sec. and at an angle of about 30 degrees to about 140 degrees uniformly into the fiber stream by a high speed gas arranged between the thermoplastic resin blowing means and fiber stream collecting means, the distance between the thermoplastic resin blowing means and the means for charging the yarn being about 5 to about 300 mm.
Claim 2
Independent Claim
162 words
An apparatus for the production of a non-woven structure, which comprises means for blowing a thermoplastic resin to form a fiber stream consisting of fine thermoplastic resin fibers with a hot gas, means for collecting the fiber stream arranged apart from the thermoplastic resin blowing means, and spaced apart from the fiber stream a distance from about 10 to about 1000 mm means having a yarn path, two gas paths at varying angles to the yarn path and movable spacer means for changing the angles of the gas passing through the gas path for charging a continuous yarn at a rate of 30 to 40 m/sec. and at an angle of about 30 degrees to about 140 degrees uniformly into the fiber stream by a high speed gas arranged between the thermoplastic resin blowing means and fiber stream collecting means, the distance between the thermoplastic resin blowing means and the means for charging the yarn being about 5 to about 300 mm.
Claim 3
Dependent Claim
31 words
The apparatus as claimed in claim 1, wherein the yarn charging means is supported in a movable manner to reciprocate in a direction perpendicular to the direction of the fiber stream.
Claim 4
Dependent Claim
36 words
The apparatus as claimed in claim 2, wherein the yarn charging means is so installed as to rotate back and forth through a small arc in a plane perpendicular to the direction of the fiber stream.
References Cited (Backward Citations)
US2732885A
Cited
US2577214A
Cited
US2801673A
Cited
US3032456A
Cited
US2897874A
Cited
US3096225A
Cited
US3110642A
Cited
US3705068A
Cited
US3595245A
Cited
US3775210A
Cited
US3775209A
Cited
US3933557A
Cited
US4095312A
Cited
US4091140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |