Nippon Petrochemicals Company, Limited

Polymer Processing Research Institute Ltd.

Polymer Processing Research Inst., Ltd.

Kazuhiko Kurihara

Hiroshi Yazawa

Shigezou Kojima

Toshikazu Oishi

Yasuo Sasaki

Haruhisa Tani

Setsuya Tsuyama

Non-woven fabric and method and apparatus for making the same

A non-woven fabric having a strength which is comparable to the strength of woven fabric and a method of making such non-woven fabric are disclosed. The non-woven fabric has a laminated structure composed of a warp web of random-laid non-woven fabric stretched lengthwise and hence having a greater strength in the lengthwise direction than in the transverse direction, and a weft web of random-laid non-woven fabric stretched transversely and hence having a greater strength in the transverse direction than in the lengthwise direction. Filaments constituting each of the warp and weft webs are substantially free from molecular orientation and extendible at least two times the original length before the web is stretched. Upon stretching of the web, the un-oriented filaments are substantially stretched to thereby cause molecular orientation therein.

Method of making cross-laminated stretched non-woven fabric

Growing community of inventors

Tokyo, Japan

Shigezou Kojima