A METHOD FOR MANUFACTURING BIODEGRADABLE PACKAGING MATERIAL, BIODEGRADABLE PACKAGING MATERIAL AND A PACKAGE OR A CONTAINER MADE THEREOF

摘要

The present invention provides a biodegradable packaging material, a method for manufacturing the same, and a product made from the material. The preparation method comprises (i) 20 to 95 wt% of polylactide having a high melt index exceeding 35 g/10 min (210 °C; 2.16 kg), (ii) polybutylene succinate (PBS) or biodegradation thereof Co-extruding one or more polymer coating layers (2) comprising at least one layer of a polymer mixture consisting of 5 to 80% by weight of a sexual derivative, and (iii) 0 to 5% by weight of one or more polymer additives, onto the fibrous substrate (1). includes that The components of the mixture are melted and mixed in the extrusion step. It is an object of the present invention to improve extrudability, increase machine speed during extrusion, and maintain excellent adhesion to substrates and excellent heat sealing properties of the coating. The products include disposable beverage cups, board trays, and sealed carton packages for solids and liquids.