Nippon Paper Industries Co., Ltd.

Sanyo-kokusaku Pulp Co., Ltd.

Morio Matsuzaki

Yasuaki Yoshida

Norio Yabe

Hisashi Mino

Akio Hoshino

Osamu Miyakawa

Nobuhiro Hatoh

Narihiro Iio

Hirosuke Tsunoda

The present invention provides a hard coat film that is provided with a hard coat layer via an easy-bonding layer on at least one surface of a cycloolefin film, has excellent temporal adhesiveness under normal condition and under moisture and heat resistant condition, and has no crack occurrence under the heat resistant condition. A hard coat filmof the present invention is provided with a hard coat layervia an easy-bonding layeron at least one surface of a cycloolefin film. The easy-bonding layerincludes a mixture of a polyolefin based resin and a styrene-acryl based resin, and a blending ratio thereof is in the range of, for example, from 95/5 to 40/60. Further, the hard coat layerincludes an ionizing radiation curable resin having a weight-average molecular weight of 700 or larger and 3600 or smaller.

Hard coat film

An electrophotographic OHP sheet comprising a transparent support and a toner-receiving layer formed on one side of the support, with the toner-receiving layer having suitability for toner fixation at a temperature in the neighborhood of 160&deg; C. to 200&deg; C. and comprising (a) a resin having a softening point of from 180&deg; C. to about 190&deg; C., (b) a resin having a softening point of from 110&deg; C. to 140&deg; C. and (c) a plasticizer having a plasticizing efficiency of 1.1 or below.

Electrophotographic overhead projector sheet

A heat-sensitive adhesive sheet for bonding a pair of information-recorded faces, belonging to the same sheet or two different sheets of recording material, together by application of heat thereto, which comprises three or more layers, including a support and a synthetic resin layer coated on either side of the support, having a peeling resistance ranging from 10 to 150 g/50 mm between the support and each synthetic resin layer in the T-peel test performed at a peeling speed of 300 mm/min. in the atmosphere of 20.degree. C. and 65% RH, and a peeling resistance greater than 300 g/50 mm, measured under the same conditions as described above, between each synthetic resin layer and the information-recorded face when heated in a condition wherein the adhesive sheet is sandwiched in between a pair of information-recorded faces of the recording material, and an information-recorded material, preferably of postcard size, made by inserting the foregoing heat-sensitive adhesive sheet between each pair of information-recorded faces belonging to one sheet or two or more sheets of recording material, wherein at least two information-recorded faces are present, and then by heating them at a temperature of 100.degree. C. or lower to unit them together through heat-sensitive adhesion.

Heat-sensitive adhesive sheet and information recorded material using

A heat-sensitive adhesive sheet for bonding a pair of information-recorded faces, belonging to the same sheet or two different sheets of recording material, together by application of heat thereto, which comprises three or more layers, including a support and a synthetic resin layer coated on either side of the support, having a peeling resistance ranging from 10 to 150 g/50 mm between the support and each synthetic resin layer in the T-peel test performed at a peeling speed of 300 mm/min. in the atmosphere of 20.degree. C. and 65% RH, and a peeling resistance greater than 300 g/50 mm, measured under the same conditions as described above, between each synthetic resin layer and the information-recorded face when heated in a condition wherein the adhesive sheet is sandwiched in between a pair of information-recorded faces of the recording material, and an information-recorded material, preferably of postcard size which is made by inserting the foregoing heat-sensitive adhesive sheet between each pair of information-recorded faces belonging to one sheet or two or more sheets of recording material, wherein at least two information-recorded faces are present, and then by heating them at a temperature of 100.degree. C. or lower to unite them together through heat-sensitive adhesion.

Growing community of inventors

Higashimatsuyama, Japan

Morio Matsuzaki