Toyo Boseki Kabushiki Kaisha

Masaki Sugimoto

Chikao Morishige

Seiichiro Yokoyama

Shinji Fujita

Shigeru Komeda

Kiyoshi Iseki

Masayoshi Satoh

Masazumi Iwanishi

A polyamide film satisfying (a) a haze value of not more than 5.0%, (b) a coefficient of kinetic friction (A) of not more than 1.0 under 50% humidity, the coefficient (A) being measured with regard to fiction between the same two polyamide films, and (c) a ratio of coefficients of kinetic friction (B)/(A) of not more than 1.5, the (B) being a coefficient of kinetic friction at 65% humidity, a billy oriented polyamide film showing an average dimensional change of not more than 3.0% and a difference between the smallest dimensional change and the largest dimensional change of not more than 2.0%, between before immersion in hot water at 95&deg; C. and during the immersion, and an average dimensional change of not more than 4.0% and a difference between the smallest dimensional change and the largest dimensional change of not more than 2.0%, between the film without treatment and the film after withdrawal from said hot water; and a polyamide laminate film containing the film as a substrate layer. The films afforded by the present invention have superior properties and are industrially advantageous in a broad range of applications.

Polyamide film and polyamide laminate film

Growing community of inventors

Ohtsu, Japan

Masaki Sugimoto