Title:
BIODEGRADABLE FILM FOR TOBACCO PACKAGING
Document Type and Number:
WIPO Patent Application WO/2023/113521
Kind Code:
A1
Abstract:
Provided is a biodegradable film for tobacco packaging, comprising: a first film layer applied such that a surface thereof faces a tobacco product; a third film layer applied such that a surface thereof is exposed to the outside; and a second film layer positioned between the first film layer and the third film layer. In the biodegradable film, the first film layer, the second film layer, and the third film layer comprise different compositions, and at least one of the first film layer, the second film layer, and the third film layer comprises a biodegradable material. The biodegradable film has a biodegradation rate of 90% or more after 60 days and a thermal shrinkage rate of 4.0% or more.
Inventors:
OH KYOUNG HWAN (KR)
HWANG MIN HEE (KR)
KIM SOO HO (KR)
SEO MAN SEOK (KR)
HWANG MIN HEE (KR)
KIM SOO HO (KR)
SEO MAN SEOK (KR)
Application Number:
PCT/KR2022/020527
Publication Date:
June 22, 2023
Filing Date:
December 16, 2022
Export Citation:
Assignee:
KT & G CORP (KR)
International Classes:
B32B27/08; B32B23/08; B32B27/30; B32B27/32; B32B27/36; B32B27/38; B32B27/40
Foreign References:
| KR101183979B1 | 2012-09-19 | |||
| KR20080064123A | 2008-07-08 | |||
| JP2008062586A | 2008-03-21 | |||
| KR20060081713A | 2006-07-13 | |||
| KR20170044573A | 2017-04-25 | |||
| KR20210180288A | 2021-12-16 | |||
| KR20220175881A | 2022-12-15 | |||
| KR20110057500A | 2011-06-01 |
Attorney, Agent or Firm:
KIM, Sung Ho (KR)
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