公开(公告)号：US20240336045A1

公开(公告)日：2024-10-10

申请号：US18696105

申请日：2022-02-17

Applicant: Lam'On LTD

Inventor： Filip Spasov Ublekov

IPC: B32B27/08 ,  B29C48/00 ,  B29C48/21 ,  B29C48/88 ,  B29K33/00 ,  B29K67/00 ,  B29K77/00 ,  B29K105/00 ,  B29L9/00 ,  B32B27/30 ,  B32B27/34 ,  B32B27/36 ,  B32B27/38 ,  C08L67/04

CPC classification number: B32B27/08 ,  B32B27/302 ,  B32B27/308 ,  B32B27/34 ,  B32B27/36 ,  B32B27/38 ,  C08L67/04 ,  B29C48/0018 ,  B29C48/022 ,  B29C48/21 ,  B29C48/9115 ,  B29K2033/00 ,  B29K2067/046 ,  B29K2077/00 ,  B29K2105/0085 ,  B29K2995/0041 ,  B29K2995/0077 ,  B29K2995/0097 ,  B29L2009/00 ,  B32B2250/24 ,  B32B2270/00 ,  B32B2307/702 ,  B32B2307/7163 ,  B32B2307/7376 ,  C08L2201/06 ,  C08L2203/16 ,  C08L2205/03

Abstract: A multilayer biodegradable film is based on polylactides (polylactic acid), preferably obtained by reactive coextrusion, and may include at least one first layer A and at least one second layer B, in which the layer A and layer B are different from each other and the layer A includes: i) a minimum of 75 wt. % amorphous polylactic acid (PLA) with D isomer content ≥5%; and ii) triblock epoxy styrene-acrylate copolymer up to 5 wt. % of the total polylactic acid in this layer; and layer B includes: i) a minimum of 75 wt. % semi-crystalline polylactic acid with a degree of crystallinity ≥20% and low content of D isomer ≤5%; and ii) triblock epoxy styrene-acrylate copolymer up to 5 wt. % of the total polylactic acid in this layer. The multilayer biodegradable film may be three-layered and obtained by the blown extrusion method.