Patent US4440700A successfully refreshed from Google Patents.
US4440700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for collecting centrifugally ejected filaments
Assignee: Polymer Processing Research Institute Ltd
•
Filing: 1982-04-26
•
Granted: 1984-04-03
•
Expires: 2002-04-26
Abstract
Abstract A process for collecting continuous polymer filaments centrifugally ejected from the spinning nozzles of a spinning head rotating at a high velocity is provided wherein the ejected filaments are caught by the surface of an annular form, flowing down liquid or by an annular wall surface wetted by a liquid flowing down thereon, spaced apart from and surrounding the spinning head and concentrically opposed to the head; then moved downwards from the location where the filaments are caught, by the flowing down liquid and if necessary, together with two or more guides; and dropped on a belt moving below the spinning head in the lateral direction and taken up in the form of multifilaments or dropped on the belt in the form of an ellipse long in the width direction of the belt and after adhering selvage materials to both the side end parts of the filaments, taken up in the form of a weft web of the ejected filaments.
Inventors
- 👤 Tokio Okada
- 👤 Shigezo Kojima
- 👤 Haruhisa Tani
- 👤 Kazuhiko Kurihara
- 👤 Hiroshi Yazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:21
CPC Classifications
D; D01; D01D; D01D7/00; B; B65; B65H; B65H54/00; B65H54/76; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
138 words
In a process for producing a plurality of continuous synthetic organic polymer filaments by centrifugally and horizontally ejecting liquid polymer from a plurality of nozzles of a head rotating at high velicity, the improvement which comprises obtaining a plurality of filaments of uniform thickness by (a) establishing an annular curtain of downwardly flowing water at a spaced distance laterally outwardly from said nozzles, (b) catching and cooling the centrifugally ejected continuous molten synthetic organic polymer filaments by impinging them against said annular curtain of downardly flowing water, and allowing said filaments to move downwardly with the downwardly flowing water in said annular curtain, (c) separating said ejected filaments from said annular water curtain after said filaments have been cooled by said water, and (d) collecting cooled and separated continuous filaments of synthetic organic polymers that have uniform thickness.
Claim 2
Dependent Claim
138 words
In a process for producing a plurality of continuous synthetic organic polymer filaments by centrifugally and horizontally ejecting liquid polymer from a plurality of nozzles of a head rotating at high velicity, the improvement which comprises obtaining a plurality of filaments of uniform thickness by (a) establishing an annular curtain of downwardly flowing water at a spaced distance laterally outwardly from said nozzles, (b) catching and cooling the centrifugally ejected continuous molten synthetic organic polymer filaments by impinging them against said annular curtain of downardly flowing water, and allowing said filaments to move downwardly with the downwardly flowing water in said annular curtain, (c) separating said ejected filaments from said annular water curtain after said filaments have been cooled by said water, and (d) collecting cooled and separated continuous filaments of synthetic organic polymers that have uniform thickness.
Claim 3
Dependent Claim
36 words
A process according to claim 1 wherein said annular curtain of downwardly flowing water is formed by water flowing evenly and without turbulence downwardly over a solid surface that is disposed annularly around said rotating nozzles.
Claim 4
Dependent Claim
26 words
A process according to claim 1 wherein said cooled ejected filaments are also moved downwardly by contacting said cooled filaments with downwardly moving solid guide means.
Claim 5
Dependent Claim
21 words
A process according to claim 3 wherein said solid guide means moves downwardly through said annular curtain of downwardly flowing water.
Claim 6
Dependent Claim
23 words
A process according to claim 3 wherein said cooled ejected filaments are also guided in their downward movement by a stationary guide means.
Claim 7
Dependent Claim
15 words
A process according to claim 3 wherein said guide means comprise a plurality of cords.
Claim 8
Dependent Claim
15 words
A process according to claim 1 wherein separation in step (c) is effected by suction.
Claim 9
Dependent Claim
29 words
A process according to claim 1 wherein in step (d) the filaments are collected on the surface of a belt running in a lateral direction below the rotating head.
Claim 10
Dependent Claim
41 words
A process according to claim 1 wherein selvage material is applied onto both the side end parts of the ejected filaments and then taking up the filaments in the form of a web of ejected filaments arranged in parallel as wefts.
Claim 11
Dependent Claim
14 words
A process according to claim 2 wherein said solid surface is a hydrophilic cloth.
Claim 12
Dependent Claim
18 words
A process according to claim 1 wherein the diameter of said annular curtain decreases in a downwardly direction.
Claim 13
Dependent Claim
39 words
A process according to claim 3 wherein said guide means comprises adhesive warp selvage material that passes downwardly through the inside of said annular curtain but very close to the surface thereof and extends downwardly below said annular curtain.
References Cited (Backward Citations)
US1500933A
Cited
US1500932A
Cited
US2439772A
Cited
US2816826A
Cited
US3032813A
Cited
GB902795A
Cited
US3250602A
Cited
US3357807A
Cited
US3738884A
Cited
US4143196A
Cited
JPS4873569A
Cited
US3860370A
Cited
JPS50116772A
Cited
JPS519067A
Cited
JPS5117376A
Cited
JPS5335074A
Cited
JPS5536331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |