Textiles: manufacturing – Thread finishing – Surface modification of running length
Patent
1976-02-11
1977-06-21
Rimrodt, Louis K.
Textiles: manufacturing
Thread finishing
Surface modification of running length
28256, 28265, 28267, D02G 120, D02G 116, D02G 112
Patent
active
040301699
ABSTRACT:
Method of treating synthetic threads, particularly filament or foil threads comprises heating the threads up to the center of their cross-section, crimping the heated thread, forming the crimped threads into a wadding, heating and compressing the wadding to reduce its volume and thereafter cooling the compressed wadding. An apparatus for treating the yarn includes a continuous heating chamber which is arranged adjacent a cooling chamber. An apparatus is provided for feeding the yarn to be treated toward the heating chamber and for crimping the yarn preferably while it is heated and perhaps also stretched. Crimping may be carried on by directing the thread under a fluid force against a screen, by passing the thread between a pair of rollers which have crimping means or by a combination of the two and, in addition, stretching means may be provided to stretch the thread. The device is also provided to collect the yarn in wads as it is crimped and to force it through a narrowing path so as to compress it as it is being fed through a heating chamber. The compressed wadding is thereafter fed through a cooling chamber. Wadding is advantageously moved through the heating chamber around a drum and between a drum and an exterior belt which is maintained under tension and a similar means is employed for transporting it through a second drum arranged in the cooling chamber. The apparatus may also include an endless conveyor having projecting needles which are trained to run through an elongated continuous chamber defined between two spaced walls which narrow in order to compress the wadding and which extend from the heating portion to a cooling portion.
REFERENCES:
patent: 2914835 (1959-12-01), Slayter et al.
patent: 3343240 (1967-09-01), Parmeggiani et al.
patent: 3389445 (1968-06-01), Schreffler
patent: 3605393 (1971-09-01), Schroeder
patent: 3859697 (1975-01-01), Guenther
Baumann Karl-Heinz
Enneking Heinrich
Schubert Gunter
Industriewerke Karlsruhe Augsburg Aktiengesellschaft
Rimrodt Louis K.
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