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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11103003 B1

PDFFull Text
Date of Patent:
Aug. 31, 2021

Filed:

Jun. 30, 2015

Modified cross-section lyocell material for tobacco filter, and preparation method therefor

Applicants:

Kolon Industries, Inc., Gwacheon-si, KR;

Kt&g Corporation, Daejeon, KR;

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;

Assignees:

KOLON INDUSTRIES, INC., Seoul, KR;

KT&G CORPORATION, Daejeon, KR;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Matthew D Matzek

Int. Cl.
CPC ...
A24D 3/00 (2020.01); A24D 3/06 (2006.01); B29C 48/05 (2019.01); B29C 48/00 (2019.01); B29C 48/21 (2019.01); B29C 48/345 (2019.01); D01D 5/253 (2006.01); D01F 2/00 (2006.01); D01D 4/02 (2006.01); D01D 5/088 (2006.01); D01D 5/28 (2006.01); A24D 3/10 (2006.01); D01F 2/08 (2006.01); B29K 1/00 (2006.01); B29L 31/14 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
A24D 3/064 (2013.01); A24D 3/068 (2013.01); A24D 3/10 (2013.01); B29C 48/0019 (2019.02); B29C 48/022 (2019.02); B29C 48/05 (2019.02); B29C 48/21 (2019.02); B29C 48/345 (2019.02); D01D 4/02 (2013.01); D01D 5/088 (2013.01); D01D 5/253 (2013.01); D01D 5/28 (2013.01); D01F 2/00 (2013.01); D01F 2/08 (2013.01); B29K 2001/08 (2013.01); B29L 2031/14 (2013.01); B29L 2031/7416 (2013.01); D10B 2503/00 (2013.01);
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 cross-sectional shape of a monofilament contained in a lyocell fiber is controlled to increase the external surface area of the fiber, after which then crimps are formed, thereby exhibiting properties equal or superior to those of conventional lyocell materials, even when used in a small amount.

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