US3831360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Texturized staple fiber structures
Assignee: Heberlein and Co AG
•
Filing: 1972-11-02
•
Granted: 1974-08-27
•
Expires: 1992-11-02
Abstract
Abstract Method and means for forming continuously by high-twisting a bundle of endless filaments, and grinding or cutting same while in the high-twisted state. The high-twisted bundle may be heat set before or after the grinding or cutting action, or not at all.
Inventors
- 👤 L Horvath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:37
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/0246
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
73 words
Process for the continuous production of textured staple fiber structures from filament bundles of thermoplastic material, characterized by subjecting a bundle of endless filaments to temporary high-twisting by means of a false-twist device and to heat-setting in the high-twisted state, and bringing said bundle into friction contact with grinding means while said bundle is in the high-twisted state upstream of said false-twist device thereby to convert said bundle into a staple fiber structure.
Claim 2
Dependent Claim
73 words
Process for the continuous production of textured staple fiber structures from filament bundles of thermoplastic material, characterized by subjecting a bundle of endless filaments to temporary high-twisting by means of a false-twist device and to heat-setting in the high-twisted state, and bringing said bundle into friction contact with grinding means while said bundle is in the high-twisted state upstream of said false-twist device thereby to convert said bundle into a staple fiber structure.
Claim 3
Dependent Claim
26 words
Process according to claim 1, characterized in that the filament bundle is brought into frictional contact with the grinding means after heat-setting in the high-twisted state.
Claim 4
Dependent Claim
26 words
Process according to claim 1, characterized in that the filament bundle is brought into frictional contact with the grinding means before heat-setting in the high-twisted state.
Claim 5
Dependent Claim
22 words
Process according to claim 1, characterized in that the staple fiber structure is subjected to a second heat-setting operation under reduced tension.
Claim 6
Dependent Claim
16 words
A process as in claim 1 wherein said bundle of endless filaments are cellulose acetate filaments.
Claim 7
Dependent Claim
12 words
Textured staple fiber structure produced according to the process of claims 5.
Claim 8
Dependent Claim
12 words
Textured staple fiber structure produced according to the process of claim 1.
Claim 9
Dependent Claim
46 words
Apparatus for effecting continuous production of textured staple fiber structures from filament bundles of thermoplastic material, comprising filament delivery means, heating means, false-twist and wind-up means, characterized in that a grinding means (10) is provided along the path of said bundle upstream from the false-twist means.
Claim 10
Dependent Claim
46 words
Apparatus for effecting continuous production of textured staple fiber structures from filament bundles of thermoplastic material, comprising filament delivery means, heating means, false-twist and wind-up means, characterized in that a grinding means (10) is provided along the path of said bundle upstream from the false-twist means.
Claim 11
Dependent Claim
28 words
Apparatus according to claim 8, characterized in that the grinding means (10) is arranged between the heating element (4) for heat-setting the false-twist and the false-twist imparter (7).
Claim 12
Dependent Claim
24 words
Apparatus according to claim 8, characterized in that the grinding means (10) is arranged upstream of the heating element (4) for heat-setting the false-twist.
Claim 13
Dependent Claim
26 words
Apparatus according to claim 8, characterized in that the grinding means consists of a rotating grinding or cutting disc (6) and of thread guides (5, 5'').
Claim 14
Dependent Claim
32 words
Apparatus according to claim 11, characterized in that a difference of speed exists between the circumferential speed of the rotating disc (6) and the speed of the filament bundle to be treated.
Claim 15
Dependent Claim
18 words
Apparatus according to claim 12, characterized in that the disc (6) rotates in the direction of filament movement.
Claim 16
Dependent Claim
21 words
Apparatus according to claim 12, characterized in that the disc (6) rotates in a direction opposite to that of filament movement.
Claim 17
Dependent Claim
28 words
Apparatus according to claim 11, characterized in that the circumferential speed of the rotating disc (6) is higher than the speed of the filament bundle to be treated.
Claim 18
Dependent Claim
33 words
Apparatus according to claim 15, characterized in that the circumferential speed of the rotating disc (6) is between 5 and 10 times higher than the speed of the filament bundle to be treated.
Claim 19
Dependent Claim
24 words
Apparatus according to claim 11, characterized in that the axis of rotation of the disc (6) is perpendicular to the direction of filament movement.
Claim 20
Dependent Claim
24 words
Apparatus according to claim 11, characterized in that the axis of rotation of the disc (6) extends obliquely with respect to the filament path.
Claim 21
Dependent Claim
23 words
Apparatus according to claim 11, characterized in that the axis of rotation of disc (6) extends parallel to the direction of filament movement.
Claim 22
Dependent Claim
21 words
Apparatus according to claim 11, characterized in that different exchangeable discs (6) having different grinding or cutting characteristics may be used.
Claim 23
Dependent Claim
46 words
Apparatus according to claim 8, characterized in that the false-twist means includes a twist tube (13) at the output extremity of which is arranged the false-twist imparter (14) and at the input extremity of which is provided an annular collar (16) with grinding or cutting means.
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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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |