Porous film and process for producing the same

Details Porous film and process for producing the same Porous film and process for producing the same

2006-12-26

2006-12-26

Vo, Hai (Department: 1771)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

C428S315700, C521S908000, C521S050000, C524S515000

Reexamination Certificate

active

07153566

ABSTRACT:
A porous film having excellent moisture permeability, flexibility and exudation resistance, as well as a manufacturing method capable of forming and stretching at high speed a porous film having the characteristics described above, the porous film being molded from a composition containing 25 to 55% by weight of polyolefinic resin and 75 to 45% by weight of an inorganic filler in which the polyolefinic resin contains 98 to 70% by weight of linear low density polyethylene and 2 to 30% by weight of branched low density polyethylene, and 0.5 to 5 parts by weight of liquid ethylene-α-olefin oligomer based on 100 parts by weight of the composition.

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Translation of JP-11-158305, Shigeru et al, Jun. 15, 1999, 10 pages.
U.S. Appl. No. 09/772,854, Yano et al, Aug. 30, 2001.

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