Apparatus for stretching acrylic fibers in a pressurized steam environment and automatic fiber drawing-in device for said apparatus |
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| 申请号 | US14893330 | 申请日 | 2014-05-20 | 公开(公告)号 | US09869041B2 | 公开(公告)日 | 2018-01-16 |
| 申请人 | M.A.E. S.P.A.; | 发明人 | Marco Rovellini; | ||||
| 摘要 | 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. | ||||||
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