| 摘要 |
A composition capable of being used for the manufacture of polyolefin film having so-called "cling" properties is disclosed. The composition consists essentially of (a) an intimate mixture of 75-98 weight percent of a first component and 2-25 weight percent of a second component, and (b) at least 200 ppm, based on the weight of (a), of an agent selected from the class consisting of (i) an organic compound having at least one polar group and at least one group selected from the class consisting of alkylene and alkylene interrupted by oxygen, said alkylene having at least eight carbon atoms and said compound being a liquid or a waxy solid; (ii) mineral oil; (iii) a liquid polyolefin; and (iv) an organic phosphate ester that is a liquid or waxy solid; and mixtures of such agents. A preferred agent is N,N-bis(2-hydroxyethyl) alkylamine where the alkyl group is a C12-C18 alkyl group. The first component is a blend of 5-100 percent of at least one homopolymer of ethylene having a density of 0.915-0.930 g/cm3 and a melt index of 0.2-10 with 0.-95 percent of at least one ethylene/a-olefin copolymer having a density of 0.915-0.930 g/cm3 and a melt index of 0.2-5.0. The second component is an elastomer having a Mooney viscosity in the range 15-70. Film manufactured from the composition is useful in the wrapping of articles or the spiral wrapping of loaded pallets. |
