| 摘要 |
An easily processable, dimensionally stable laminate film structures which are particularly adopted for use in lining ponds, pits, dams and canals and other systems employed for water handling. More particularly, it is directed to laminate film structures comprising, in generally planar coextensive relationship, (A) a first outer layer of substantially linear chlorinated polyethylene containing from about 25 to about 50 weight percent of chemically combined chlorine, (B) an internal layer of substantially linear chlorinated polyethylene containing from about 5 to about 15 percent by weight of chemically combined chlorine, and (C) a second outer layer of the nature of the first outer layer which second outer layer is disposed adjacent the internal layer and remote from the first outer layer, the first and second outer layers being substantially amorphous and the internal layer being substantially crystalline.
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