Title:
BIODEGRADABLE MULTI-LAYER FILM, MANUFACTURING METHOD THEREFOR, AND ECO-FRIENDLY PACKAGING MATERIAL CONTAINING SAME
Document Type and Number:
WIPO Patent Application WO/2023/008901
Kind Code:
A1
Abstract:
The present invention provides a biodegradable multilayer film, a manufacturing method therefor, and an eco-friendly packaging material containing same, the biodegradable multilayer film comprising a base layer and a biodegradable resin layer, wherein the biodegradable resin layer includes a polyhydroxyalkanoate (PHA) resin, and the thermal bonding strength of the biodegradable resin layer is 0.5 kgf/15mm to 15 kgf/15mm, the water permeability is 3 g/m2·atm·day or less, and the oxygen permeability is 10 cc/m2·atm·day or less. The biodegradable multilayer film can be biodegraded in natural conditions such as in soil and in the ocean, can improve barrier properties against moisture and oxygen without including aluminum or nylon materials, and can further improve adhesive properties. As such, the biodegradable multilayer film can be used as a packaging material in various fields such that a high-quality and eco-friendly packaging material is provided.
Inventors:
YOON KI CHULL (KR)
CHUNG JIN SU (KR)
MOON SANG GWON (KR)
SHIN SOO AN (KR)
PARK JEUNG YIL (KR)
KIM JEONGSU (KR)
CHUNG JIN SU (KR)
MOON SANG GWON (KR)
SHIN SOO AN (KR)
PARK JEUNG YIL (KR)
KIM JEONGSU (KR)
Application Number:
PCT/KR2022/011019
Publication Date:
February 02, 2023
Filing Date:
July 27, 2022
Export Citation:
Assignee:
CJ CHEILJEDANG CORP (KR)
International Classes:
B32B27/36; B32B7/12; B32B27/10; B32B27/18; B32B27/32; B32B37/12; B32B37/15
Foreign References:
| KR102141711B1 | 2020-08-05 | |||
| KR101937867B1 | 2019-04-11 | |||
| JPH106444A | 1998-01-13 | |||
| KR102269358B1 | 2021-06-28 | |||
| KR20110008312A | 2011-01-26 | |||
| KR20120103158A | 2012-09-19 |
Attorney, Agent or Firm:
FIRSTLAW P.C. (KR)
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