公开(公告)号：WO2022241522A1

公开(公告)日：2022-11-24

申请号：PCT/AU2022/050489

申请日：2022-05-20

申请人： VARDEN PROCESS PTY LTD

发明人： TEO, Boon Mian ,  POTTAGE, Matthew ,  LY, Jenicka

IPC分类号： C08L1/12 ,  C08L1/14 ,  C08L67/04 ,  B65D65/42 ,  B65D65/46 ,  B32B27/08 ,  B32B27/10 ,  B32B27/12 ,  B32B27/36 ,  C08G63/08 ,  C08J5/18

摘要： A film material that is a blend of a first polymer, and a second polymer. The first polymer is synthesized from one or more bio-based monomers, and has a molecular weight that is less than or equal to 60 kilodaltons. The second polymer is one of: a carbohydrate, and a functionalised carbohydrate derived from one or more bio-based materials. The ratio of first polymer to second polymer within the film material is at least 25:75 by weight. A packaging material has a substrate, and a layer that is formed of the film material, which is assembled into a substantially continuous film on a carrying surface of the substrate. The layer is formed to a thickness that is efficacious in providing a barrier to transmission of oxygen and/or water vapour to the carrying surface of the substrate.