3m Innovative Properties Company

The Furukawa Electric Co., Ltd.

Shinya Ohtomo

Koji Saito

Akitoshi Suzuki

Hirokazu Sasaki

Hidetoshi Abe

Yoshinori Araki

Michael R Kesti

Toshio Tani

Takeo Yamamoto

Kensaku Shinozaki

Shinji Ikeda

Isamu Futaba

Kouji Hataya

The present disclosure relates to a method for manufacturing the laminated film that is BSPC (Back Side Printable Clear) and has excellent interlayer adhesion. The method involves a first UV curing step and a second UV curing step and the laminated film includes a transparent film layer, a UV curable ink layer, and an adhesive layer. The first UV curing step includes disposing the UV curable ink layer on the transparent film layer and partially curing the UV curable ink layer by performing a first UV irradiation. The second UV curing step includes disposing the adhesive layer on a surface of the UV curable ink layer opposite the transparent film layer, and further curing the UV curable ink layer by performing a second UV irradiation.

Method for manufacturing a laminated film

To provide an electrolytic copper foil for a negative electrode for a lithium-ion secondary battery with which it is possible to produce a long-life lithium-ion secondary battery in which there is no decline in the capacity retention ratio even when the charge-discharge cycling is repeated, that has long life, and no deformation of a negative electrode current collector occurs. The electrolytic copper foil constituting the negative electrode current collector for the lithium-ion secondary battery has, after heat treatment at from 200 to 400&#xb0; C., a 0.2% proof stress of 250 N/mmor more, and elongation of 2.5% or more; and the surface on which an active material layer of the electrolytic copper foil is provided has been rust-proofed, or roughened and rust-proofed. As a result of analysis of the depth profile (depth direction) obtained by performing secondary ion mass spectrometry (SIMS) in the thickness direction of the copper foil, the copper foil including: chlorine (Cl), carbon (C), and oxygen (O) each in a concentration of 10to 5&#xd7;10atoms/cm, and sulfur (S) and nitrogen (N) each in a concentration of 10to 10atoms/cm.

Lithium-ion secondary battery, electrode for the secondary battery, and electrolytic copper foil for electrode for the secondary battery

Growing community of inventors

Tokyo, Japan

Shinya Ohtomo