| 摘要 |
1,161,771. Laminates. NATIONAL DISTILLERS & CHEMICAL CO. 3 Jan., 1967 [3 Jan., 1966], No. 375/67. Heading B5N. [Also in Division B8] A bag is produced from a 3-ply laminate material comprising an outer layer of a vinyl acetate copolymer for imparting impact resistance, a central layer of low density polyethylene, and an inner layer of a high density copolymer of ethylene or propylene to provide temperature resistance. The inner layer has a higher stiffness than the other layers and may be an ethylene/butene-1 copolymer. |
