Toppan Printing Co., Ltd.

Hisamitsu Pharmaceutical Company, Inc.

Maruto Sangyo Co., Ltd.

Tsuguki Nishihara

Yasunori Takada

Atsushi Matsushima

Tsuyoshi Takamiya

Chiaki Yoshida

Toshiaki Yoshihara

Takito Shima

Satoshi Iwata

Tomohiro Shinoda

Tetsurou Tateishi

Hisaaki Isaji

Koshin Cho

A support film for tape which is used for a tape, the support film for tape includes: a film-shaped support formed of polyurethane; and a barrier layer which includes a water-soluble polymer compound and montmorillonite and is formed on one surface of the support. The support film for tape has a percentage content of the montmorillonite in the barrier layer is equal to or more than 2 percent by weight and equal to or less than 22 percent by weight.

Support film for tape and tape

A support film for tape which is used for a tape includes a film-shaped support formed of polyurethane, a barrier layer which includes polyvinyl alcohol and a layered inorganic compound and is formed on a surface of the support, and an undercoat layer which is disposed between the support and the barrier layer, and which causes the support and the barrier layer to adhere to each other.

The present invention provides a release film which has a release layer on a film substrate, which has excellent long-term preservation stability and yet maintains a stripping performance of the release film, which serves to make inspection for foreign materials easy, and which provides excellent design effect when a print layer is formed. The release film has average luminous reflectance of the release film on the surface of the side on which the release layer is formed being in the range of 0.5-2.5%, spectral reflectance curve of the release film surface on which the release layer is formed having a local minimal value and no local maximal value in the wavelength region in the range of 400-800 nm, reflection hue of the release film on the side on which the release layer is formed satisfying both &#x2212;8&#x2266;a*&#x2266;8 and &#x2212;16&#x2266;b*&#x2266;8 in the L*a*b* color coordinate system.

Release film and stacked body

Growing community of inventors

Saitama, Japan

Tsuguki Nishihara