Process for production of crimpable chemical yarns
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United States of America Patent
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Jan 27, 1981
Grant Date -
N/A
app pub date -
Nov 22, 1978
filing date -
Nov 25, 1977
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The process of an apparatus for asymmetrically heat treating chemical yarns by applying different temperatures on either side of a plane passing through two generatrices of a peripheral surface of each orifice through which the yarns are extruded during production. One side of the plane is preferably at a temperature slightly higher than the melting point of the material and the other side of the plane is preferably at a temperature slightly lower than the decomposition point of the material.
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