Dai Nippon Printing Co., Ltd.

Tsutomu Yoshinaka

Koji Shimizu

Kenichiro Suto

Hideki Kurokawa

Hiroshi Miyama

Kiyoshi Oguchi

Jun Fukuda

Takuya Yamazaki

Masahiro Yoshikawa

Hitoshi Sekino

Katsuhiko Hayashi

A battery packet () comprises a battery case () formed by processing a battery case forming laminated sheet (), a batterycontained in the battery case (), and tabs () extending outside from the battery case (). The battery case forming laminated sheet () is formed by laminating a first base film layer (), i.e., an outermost layer, a metal foil layer (), and a heat-adhesive resin layer () in that order. The first base film layer () is a biaxially oriented polyethylene terephthalate resin film or a biaxially oriented nylon resin film. The metal foil layer () is an aluminum or copper foil. The heat-adhesive resin layer () is formed of a polyolefin resin, more preferably, of an acid-denatured polyolefin resin.

Battery case forming sheet and battery packet

A battery packet ( ) comprises a battery case ( ) formed by processing a battery case forming laminated sheet ( ), a battery contained in the battery case ( ), and tabs ( ) extending outside from the battery case ( ). The battery case forming laminated sheet ( ) is formed by laminating a first base film layer ( ), i.e., an outermost layer, a metal foil layer ( ), and a heat-adhesive resin layer ( ) in that order. The first base film layer ( ) is a biaxially oriented polyethylene terephthalate resin film or a biaxially oriented nylon resin film. The metal foil layer ( ) is an aluminum or copper foil. The heat-adhesive resin layer ( ) is formed of a polyolefin resin, more preferably, of an acid-denatured polyolefin resin.

Sheet for cell and cell device

Growing community of inventors

Shinjuku-ku, Japan

Tsutomu Yoshinaka