公开(公告)号：US20240001655A1

公开(公告)日：2024-01-04

申请号：US18248015

申请日：2021-10-01

Applicant: KANEKA CORPORATION

Inventor： Wei MIAO ,  Takeshi SUGIYAMA ,  Arihiro SAITO ,  Shun MURASAWA ,  Tetsuo OKURA

IPC: B32B27/08 ,  B32B7/02 ,  B32B27/18 ,  B32B27/36 ,  B65D81/05 ,  B65D65/40 ,  C08L67/04

CPC classification number: B32B27/08 ,  B32B7/02 ,  B32B27/18 ,  B32B27/36 ,  B65D81/051 ,  B65D65/40 ,  B32B2250/02 ,  B32B2307/7376 ,  B32B2270/00 ,  B32B2307/31 ,  B32B2553/00 ,  B32B2250/244 ,  C08L67/04

Abstract: A multilayer film includes a first resin layer and a second resin layer. Each of the first and second resin layers contains a poly(3-hydroxyalkanoate) resin. The ratio of the thickness of the first resin layer to the thickness of the second resin layer is from 1.0:0.015 to 1.0:5.0. A heat quantity ΔH of the first resin layer is 30 J/g or more, and a heat quantity ΔH of the second resin layer is 25 J/g or less. The heat quantity ΔH of each of the first and second resin layers is heat of melting over a temperature range of 130 to 190° C.