Nippon Paper Industries Co., Ltd.

Nichiban Company Limited

Nippon Paper Chemicals Co., Ltd.

Yusuke Sugiyama

Takeo Suzuki

Takuya Takahashi

Yasuaki Yoshida

Takashi Ino

Takeshi Hotta

Syuji Ichimura

Mikihiro Endo

Kimiyoshi Sakajiri

Narihiro Iio

Syou Kariatumari

Syunji Sekiguchi

Narihiro Ilo

Mikihiro Endou

Toshihide Fukuyama

Hiraku Honma

The present invention provides a hard coat film having excellent adhesion to a hard coat layer when a cycloolefin polymer film is used as a base material. The hard coat film of the present invention comprises a hard coat layer containing an ionizing radiation curable resin laminated on at least one surface of a cycloolefin polymer base film through a primer layer. This primer layer contains a modified polyolefin resin in which a polyolefin resin is graft-modified with an α,β-unsaturated carboxylic acid or a derivative thereof, and a (meth)acrylic acid ester. In this modified polyolefin resin, the graft weight of the α,β-unsaturated carboxylic acid or derivative thereof is 0.4 to 7 wt. % when the amount of the modified polyolefin resin is taken as 100 wt. %.

Hard coat film and method for producing same

A hard coat film having excellent adhesion (particularly adhesion over time) to a hard coat layer when a cycloolefin polymer film is used as a base material. The hard coat film comprises a hard coat layer containing an ionizing radiation curable resin laminated on at least one surface of a cycloolefin polymer base film via a primer layer. The primer layer has an arithmetic average surface roughness (Ra) in the range of 0.5 nm to 15.0 nm, and a surface of the primer layer has a static friction coefficient in the range of 0.6 to 2.0.

A method for manufacturing adhesive resin pellets includes adding an antiblocking agent to water, melting an adhesive resin and extruding the adhesive resin into the water, and cutting the adhesive resin extruded into the water to form adhesive resin pellets. Polyolefin fine particles used for the antiblocking agent have an average particle diameter of 1 &#x3bc;m or more and less than 18 &#x3bc;m, and the adhesive resin has an adhesive force of less than 15.00 N/25 mm.

Adhesive resin pellets and method of manufacturing same

An antiglare hard coat film formed by providing an antiglare hard coat layer containing fine particles and a resin on a transparent film. When an average value of height in an evaluation region on a surface of the antiglare hard coat film is set at zero (0), a maximum cross sectional height represented by a difference between a height maximum value in the evaluation region and a height minimum value in the evaluation region is from 1.0 to 3.0 &#x3bc;m, and an average inclination angle of unevenness on the surface of the antiglare hard coat film is 1 degree or less. The total value of the transmissive clarity measured through four optical combs using a transmissive clarity measuring device according to JIS K 7105-1981 is 280% or more, and the value of the transmissive clarity measured through each optical comb is 70% or more, respectively.

Antiglare hard coat film

An antiglare hard coat film is provided in which light transmittance is high without giving antiglare properties more than necessary, a haze value is low, transparency is excellent, image clarity is high, glare of an image is suppressed, whitishness (white blur) of the film is reduced, contrast deterioration is suppressed, and visibility of the display is improved as compared with prior-art antiglare films. This antiglare hard coat film is formed by providing an antiglare hard coat layer containing organic particulates and a resin on a transparent film. When an average value of height in an evaluation region on the surface of the antiglare hard coat film is set to zero (0), a maximum sectional height represented by a difference between a height maximum value in the evaluation region and a height minimum value in the evaluation region is 0.6 &#x3bc;m or less.

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Tokyo, Japan

Yusuke Sugiyama