| 摘要 |
An oriented, opaque polymer film laminate which comprises: (a) a non-absorbent thermoplastic polymer core layer having an upper major surface and a lower major surface; and, (b) a liquid-absorbent, opaque surface layer adherently applied to the upper major surface of the core layer and, optionally, to the lower major surface of the core layer, said surface layer comprising a thermoplastic matrix polymer containing numerous opaquing voids, said voids containing one or more void-initiating particles derived from a material which is phase distinct and incompatible with the matrix material.
|
