Microporous polyolefin shaped articles with patterned surface ar

Details Microporous polyolefin shaped articles with patterned surface ar Microporous polyolefin shaped articles with patterned surface ar

1991-06-10

1992-06-09

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428159, 428213, 428220, 428409, 428910, 4283155, 4283157, 4283159, 264 41, 264 48, 264 49, 521 64, B32B 518, B32B 302

Patent

active

051205947

ABSTRACT:
A microporous polyolefin shaped article is provided. The article comprises a polyolefin substrate of substantially uniform thickness having a patterned surface, the patterned surface providing substantially skinless areas having high microporosity and skinned areas of reduced microporosity. A method for preparing the article is also provided.

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