▎ 摘　　要

NOVELTY - Antibacterial heat-sealable bidirectional stretch polylactic acid film comprises an upper surface layer (30), a middle layer (20) and a lower surface layer (10). The upper surface layer includes anti -adhesive master batch, antibacterial master batch and polylactic acid resin. The middle layer is polylactic acid resin. The lower surface layer comprises anti -adhesive master batch, antibacterial master batch, compatible agent, functional resin and polylactic acid resin. The functional resin includes polynoxic acid-hexyl-bunol and polytinyl-dilate-1, 4-cycloral alkanols ester. USE - Used as antibacterial heat-sealable bidirectional stretch polylactic acid film. ADVANTAGE - The film: has good antibacterial performance and has heat sealing performance, wide use, good performance and easy processing, simple production process, high production efficiency, easy to realize industrialization; is completely biodegradable material, non-toxic, harmless and hygienic and has green and environmentally friendly packaging material, which is in line with the trend of environmental protection. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing antibacterial heat-sealable bidirectional stretch polylactic acid film comprising melting each layer, co-extruding to obtain un-stretched casting, carrying out bidirectional stretch the un-stretched casting sheet to obtain the antibacterial heat-sealable bidirectional stretch polylactic acid film. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the antibacterial heat-sealable bidirectional stretch polylactic acid film. 10Lower surface layer 20Middle layer 30Upper surface layer