Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Taroh Ichikawa0
Mindiaw Wang0
Shigeru Yano0
Date of Patent
December 26, 2006
0Patent Application Number
099137250
Date Filed
December 18, 2000
0Patent Primary Examiner
Patent 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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