Heating apparatus and process for drawing polyolefin fibers

Textiles: manufacturing – Thread finishing – Surface modification of running length

Reexamination Certificate

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C264S211170

Reexamination Certificate

active

11591090

ABSTRACT:
A heating apparatus and process useful for drawing ultrahigh molecular weight polyolefin fibers, such as polyethylene fibers. The heating apparatus includes a first set of rolls and a plurality of aligned ovens. The apparatus includes a second set of rolls at the exit of the ovens which rolls are adapted to provide the desired drawing of the polyolefin fibers. The apparatus and process provide a single draw step in a heated environment, with the use of preferably four or six horizontal ovens.

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