Technological watch

MULTILAYERED BIODEGRADABLE FILM, METHOD FOR MANUFACTURING SAME, AND ECO-FRIENDLY PACKAGING MATERIAL COMPRISING SAME

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.

Publication date: 23/03/2023

Number: WO2023043100A1 (A1)

Applicant: SKC CO LTD?[KR]

Inventor: LEE SEOKIN?[KR]; HAN KWEON HYUNG?[KR]

Espacenet (Worldwide)



      

This project has received funding from the Bio Based Industries Joint Undertaking under the European Union’s Horizon 2020 research and innovation programme under grant agreement No 837761.