Japan Vilene Company, Ltd.

Noriko Miyaguchi

Takashi Tarao

Toshio Aikawa

Hitoshi Kobayashi

Masanao Tanaka

Toshiaki Takase

Yoshihiko Kondo

Takahiro Yokoyama

Yoshisato Miyakoshi

Mitsuru Fujihashi

Hideo Tsuchiya

Toshiaki Hirohashi

Disclosed is a battery separator consisting essentially of a nonwoven fabric having a substantially unilayered structure, wherein an apparent total surface area of fibers per a surface density of the nonwoven fabric is 20 mor more, a thickness of the nonwoven fabric is 0.1 mm or less, a uniformity index of the nonwoven fabric is 0.15 or less, and the nonwoven fabric contains fine fibers having a fiber diameter of 4 &#x3bc;m or less.

Battery separator

A nonwoven fabric prepared from fibers which are not substantially fibrillated and have a diameter of less than 20 &mgr;m, by fusing a fiber web comprising fine fibers having a diameter of 4 &mgr;m or less, and adhesive fibers having a diameter ranging from 8 &mgr;m to less than 20 &mgr;m, wherein a maximum pore size in the nonwoven fabric is not more than twice a mean flow pore size of the nonwoven fabric is disclosed.

Nonwoven fabric containing fine fiber, and a filter material

A nonwoven fabric prepared from fibers which are not substantially fibrillated and have a diameter of less than 20 &mgr;m, by fusing a fiber web comprising fine fibers having a diameter of 4 &mgr;m or less, and adhesive fibers having a diameter ranging from 8 &mgr;m to less than 20 &mgr;m, wherein a maximum pore size in the nonwoven fabric is not more than twice the mean flow pore size of the nonwoven fabric is disclosed.

Nonwoven fabric containing fine fibers, and a filter material

A non-woven fabric in which large fiber bundles of the fabric intersect one another, small fiber bundles thereof intersect one another among said large fiber bundles, and the fibers of the fiber bundles are being entangled with one another among the large fiber bundles, among the small fiber bundles and at the intersecting points of the fiber bundles, may be manufactured by fluid-entangling fiber webs on a support member having large pores to obtain said large fiber bundles therein; and further fluid-entangling fiber webs of the resultant intermediate on a support member having small pores from either the same direction or the opposite direction to form said small fiber bundles therein. The non-woven fabric has excellent draping property, covering property and abrasion resistance and can be used as an interlining, as a base material for synthetic leathers, as a variety of base materials, as an interior material, as a simple garment, as a medical gown, etc.

Non-woven fabric

Growing community of inventors

Ibaraki, Japan

Noriko Miyaguchi