Title:
MULTILAYERED BIODEGRADABLE FILM, METHOD FOR MANUFACTURING SAME, AND ECO-FRIENDLY PACKAGING MATERIAL COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/043100
Kind Code:
A1
Abstract:
The present invention provides a multilayered biodegradable film, a method for manufacturing same, and an eco-friendly packaging material comprising same. Specifically, the multilayered biodegradable film comprises two or more kinds of different thermoplastic resin layers, which are alternately laminated and include: a first resin layer containing as a main ingredient a polylactic acid-based polymer; and a second resin layer containing as a main ingredient an aliphatic polyester-based resin or an aliphatic-aromatic copolymer polyester-based resin, the uniformity (LUI) of the first resin layer being adjusted to 0.2 ㎛ or less. Therefore, the multilayered biodegradable film retains excellent biodegradability and can improve the uniformity, flexibility, transparency, external appearance characteristics, and degrees of noise of final films, and thus can be utilized as a packaging material in various fields to enable the provision of a high-quality, eco-friendly packaging material.
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Inventors:
LEE SEOKIN (KR)
HAN KWEON HYUNG (KR)
HAN KWEON HYUNG (KR)
Application Number:
PCT/KR2022/013133
Publication Date:
March 23, 2023
Filing Date:
September 01, 2022
Export Citation:
Assignee:
SKC CO LTD (KR)
International Classes:
B32B27/36; B29C48/00; B29C48/08; B32B38/00
Foreign References:
| KR20120041974A | 2012-05-03 | |||
| JP2015039870A | 2015-03-02 | |||
| KR20140027221A | 2014-03-06 | |||
| KR20050102639A | 2005-10-26 | |||
| US20060019111A1 | 2006-01-26 |
Attorney, Agent or Firm:
FIRSTLAW P.C. (KR)
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