Recycled polyester filament and preparation method therefor

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12221724
APP PUB NO 20230040916A1
SERIAL NO

17789792

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Importance

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Abstract

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A recycled polyester filament and preparation method therefor are disclosed. In the process of preparing a fiber from a recycled polyester according to the FDY process, the ring-blowing is used for cooling, and the distribution of spinneret holes on the spinneret is controlled to meet certain conditions, then the recycled polyester filament is obtained by relaxation heat treatment after a fully drawn yarn is produced. The spinneret holes are C-shaped spinneret holes and circular spinneret holes, the cross-section of the C-shaped spinneret hole is composed of an outer arc, an inner arc, and two line segments, and two endpoints of the outer arc are A and B respectively; wherein the certain conditions include: all the spinneret holes are distributed in concentric circles, and the C-shaped spinneret holes are located on the outermost circle, rotating at different angles and randomly distributed.

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Patent Owner(s)

  • JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fan, Hongwei Wujiang, CN 28 10
Tang, Fangming Wujiang, CN 18 7
Wang, Lili Wujiang, CN 226 1989
Wang, Shanshui Wujiang, CN 16 1

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