| 摘要 |
A film of thermoplastic material comprises 65 to 75% of an ethylene-butene copolymer of density 0,946 to 0,954 and 35 to 25% of polyisobutylene of molecular weight of from 80,000 to 200,000. Film of thickness from 4 to 9 mils. is suitable for fabricating into a bag for the packaging of fertilizers. Specifications 790,195, 830,824 and U.S.A. Specifications 2,240,582 and 2,846,427 are referred to. |
