Mitsui Chemicals, Inc.

Prime Polymer Co., Ltd.

Kunihiko Takesue

Munehito Funaya

Keita Itakura

Satoshi Hashizume

Mitsuo Kawata

Jun Birukawa

Tokutaro Kimura

Masahiro Kishine

Provided is a film for thermal sterilization packaging which is excellent in a total balance of characteristics such a transparency, an impact resistance, a heat sealing property, a blocking resistance, a heat resistance and the like. The film for thermal sterilization packaging according to the present invention is characterized by comprising:

Film for thermal sterilization packaging

The conjugate fiber nonwoven fabric of the present invention comprises conjugate fibers, preferably core-sheath-type or side-by-side-type conjugate fibers, composed of a polyethylene-based resin (A) having a higher melting point in the range of 120 to 135&deg; C. and a lower melting point in the range of 90 to 125&deg; C., which is lower than the above higher melting point at least by 5&deg; C., and a high-melting point resin (B) whose melting point is higher than that of the above polyethylene-based resin (A) by 10&deg; C. or more, the component ratio by weight of the polyethylene-based resin (A) to the high-melting point resin (B) (A/B) being in the range of 50/50 to 10/90, and the polyethylene-based resin (A) forming at least part of the surface of the fiber longitudinally continuously. This conjugate fiber nonwoven fabric has an excellent softness and a high strength, and it is suitably used as a nonwoven fabric for sanitary materials.

Composite-fiber nonwoven fabric

Growing community of inventors

Chiba, Japan

Kunihiko Takesue