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Patent

BIODEGRADABLE POLYESTER FOIL


Application Date:
Jun 8, 2017
USPTO Patent:
US 15322753
Abstract:

This invention relates to a lyocell material for a tobacco filter and a method of manufacturing the same, and more particularly to a lyocell fiber having a modified cross-section for a tobacco filter, wherein the cr...

Inventors:
Jong Cheol JEONG, Yongin-si (KR)
Sang Woo JIN, Yongin-si (KR)
Sang Yoel LEE, Yongin-si (KR)
Woo Chul KIM, Yongin-si (KR)
Sang Mok LEE, Yongin-si (KR)
Jong Yeol KIM, Daejeon (KR)
Soo Ho KIM, Daejeon (KR)
Bong Su CHEONG, Daejeon (KR)
Hyun Suk CHO, Daejeon (KR)
Sung Jong KI, Daejeon (KR)
International Classification:
A24D 3/06 (20170608); B29C 47/00 (20170608); D01D 5/28 (20170608); B29C 47/06 (20170608); B29C 47/30 (20170608); D01D 5/088 (20170608); A24D 3/10 (20170608); D01F 2/08 (20170608)

Claims

What is claimed is:

1. A method of manufacturing a lyocell material having a modified cross-section for a tobacco filter, comprising: (S1) spinning a lyocell spinning dope comprising a cellulose pulp and an N-methylmorpholine-N-oxide (NMMO) aqueous solution using a spinneret having a plurality of unit holes each having multiple holes;(S2) coagulating the lyocell spinning dope...

Description

TECHNICAL FIELD

The present invention relates to a fiber for a tobacco filter, and more particularly to a lyocell material having a modified cross-section for a tobacco filter, having an increased external surface area and space occupancy, compared to conventional lyocell materials, and to a method of manufacturing the same.

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