Asahi Kasei Kabushiki Kaisha

Seiichi Amano

Kazufumi Kato

Junichi Kusakabe

Masaaki Mori

The present invention provides a novel packaging material for sterilization which has processing suitability as a packaging material, is compatible with all sterilization processing methods such as those performed under high-temperature conditions, has small variation in shapes and dimensions, and is capable of maintaining an internal sterilized condition. This packaging material for sterilization is configured from at least two layers of laminated non-woven fabrics comprising a non-woven fabric layer (I) formed of continuous long fibers having an average fiber diameter of 5-30 &#x3bc;m and a non-woven fabric layer (II) formed of ultra-fine fibers having an average fiber diameter of 0.1-4 &#x3bc;m.

Packaging material for sterilization

A nonwoven fabric separator for a lead storage battery includes a nonwoven fabric configured with regenerated fibers or synthetic fibers. The nonwoven fabric is composed of a recycled fiber or synthetic fiber having a relationship between the average pore diameter (D) of the nonwoven fabric separator and the number of pores (N) that satisfies the following equation: 1.0&#xd7;10&#x3c;D*N&#x3c;1.0&#xd7;10. The nonwoven fabric separator includes at least two layers which are integrated.

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Tokyo, Japan

Seiichi Amano