Apparatus for stretching acrylic fibers in a pressurized steam environment and automatic fiber drawing-in device for said apparatus
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United States of America Patent
Stats
-
Jan 16, 2018
Issued Date -
N/A
app pub date -
May 20, 2014
filing date -
May 21, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A stretching apparatus of fibre tows in a pressurized steam environment includes an elongated stretching chamber having a generally rectangular section of a low height, within which the tows are treated with saturated or overheated steam at high temperature and pressure and simultaneously undergo a mechanical stretching operation. The stretching chamber has a width sufficient to house multiple tows mutually flanked in a running plane and is formed within a stretching chest made of aluminum. The stretching chest is housed in a supporting structure, having a higher structural rigidity than the stretching chest, which includes a plurality of contact elements apt to determine a predefined position of the stretching chest with respect to a direction perpendicular to the tow running plane and to allow a limited mobility of the stretching chest in the other two mutually perpendicular directions which lie in the plane, length and width respectively.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2014 Application Filing Year
- D06C Class
- 51 Applications Filed
- 40 Patents Issued To-Date
- 78.44 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D06C Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
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| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 16, 2025 |
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