Toyo Boseki Kabushiki Kaisha

Toyobo Co., Ltd.

Akira Matsuda

Wakato Tomatsu

Kazumoto Imai

Hirokazu Ogi

Katsuaki Kuze

Kenji Kawai

Tsutomu Oko

Haruo Okudaira

Akihumi Yasui

Sinitiro Okumura

Masao Kochi

Provided is a polyethylene film that is more excellent in blocking in unwinding the film in the film roll state, and more excellent in blocking between sealants after lamination with a base material, and also having transparency and excellent heat sealing property even at low temperatures. A polyethylene film wherein in at least either face, a ratio between an arithmetic mean inclination angle in a machine direction of film (R&#x394;a (MD) [&#xb0;]), and an arithmetic mean inclination angle in a direction perpendicular to the machine direction (R&#x394;a (TD) [&#xb0;]) satisfies the following formula (1):1.2&#x2264;(TD)/(MD)&#x2264;3.6&#x2003;&#x2003;(1)

Polyethylene film

Provided is a polyethylene film showing more excellent blocking resistance in unwinding from the film roll state and more excellent blocking resistance between sealants after lamination with a base material, and having transparency and excellent heat sealing property even at low temperatures. A polyethylene film wherein in at least either face, a ratio between an arithmetic mean roughness in a machine direction of film (Ra(MD)), and an arithmetic mean roughness in a direction perpendicular to the machine direction (Ra(TD)) satisfies the following formula (1):1.2&#x2264;()/()&#x2264;3.6&#x2003;&#x2003;(1) (Ra(MD): arithmetic mean roughness [&#x3bc;m] measured in the machine direction of film, and Ra(TD): arithmetic mean roughness [&#x3bc;m] measured in the direction perpendicular to the machine direction of film).

To provide a viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and which attains, at a high level, the compatibility of being enhanced in viewing angle with a decrease in the darkening of images at the time of observing the screen from the front thereof. A viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and simultaneously satisfies the following requirements (1) to (3): (1) the film has a parallel ray transmittance of 5 to 90%; (2) the film has a diffusivity (A) of 1 to 20 degrees in its main diffusion direction; and (3) the film has a diffusivity ratio of 0.25 to 15% in the main diffusion direction.

Viewing-angle-enhancing film for liquid crystal display device, protective film with viewing-angle-enhancing-function, and liquid crystal display device

Polyamide laminated film

Growing community of inventors

Inuyama, Japan

Akira Matsuda