Mitsubishi Paper Mills Limited

Mitsubishi Chemical Industries Limited

Mitsubishi Chemical Corporation

Mitsubishi Kasei Corporation

Nobushige Ikeya

Touru Noda

Masaaki Sugimoto

Yoshio Matsumoto

Koichi Hasegawa

Takuya Seri

Osamu Kojima

Tetsuya Ashida

Masayuki Tsubaki

Tomoichi Morita

Kohhei Nitta

Disclosed are resin-coated paper having on one side of its base paper a first resin layer made of a resin composition obtained by melt-blending 90 to 65 parts by weight of a high-density polyethylene resin having a melt flow rate of 10.0 g/10 min to 40.0 g/10 min and a density of 0.960 g/cm.sup.3 or more and 10 to 35 parts by weight of a low-density polyethylene resin or a medium-density polyethylene resin, which has a melt flow rate of 0.2 g/10 min to 2 g/10 min, a density of 0.935 g/cm.sup.3 or less, a percentage of molecules with a molecular weight of 500,000 or more of 10% by weight or more and a critical shear rate of 0.5 (l/sec) or less, said resin composition obtained by the melt-blending having a critical shear rate of 10 (l/sec) or less; and a process for producing the resin-coated paper. The resin-coated paper is good in the molding processability of the resin layer, is excellent in the adhesion between the resin layer and the base paper, and contains only a small amount of a gel formed.

Resin-coated paper

A photographic support comprising a paper substrate and the resin layers formed on both sides thereof, each of the resin layers being made of a resin composition comprising a polyethylene resin, wherein the difference in thickness between the resin layer on the side on which a photographic layer is to be provided and the resin layer on the opposite side is 3 .mu.m or greater, and the polyethylene resin in the resin layer on the side opposite from the photographic layer is a compounded resin prepared by melting and mixing a specified number of parts by weight of a specific low-density or medium-density polyethylene resin and a specified number of parts by weight of a specific high-density polyethylene resin. This resin-coated paper type photographic support has good adhesion between the base paper and the resin layer on the side opposite from the photographic layer, excellent in qualities such as anticurl properties, cutting properties and capable of high-speed production.

Photographic support

A polyolefin resin composition obtained by mixing a polyolefin resin with minor proportion of a polybutene of low molecular weight, a mixed glyceride containing a lower acyl group and a higher acyl group, and preferably a surface wetting agent, is used to form a polyolefin film, which is thereafter aged. The thus formed film exhibits very excellent adhesion strength as well as very good transparency and physical strength, and is therefore suitable for use as a food packaging film.

Polyolefin resin composition and method for making polyolefin film

A tacky polyolefin film is prepared by forming a film using a composition comprising a polyolefin resin, a low grade polyolefin and a tackifier and aging the resulting film.

Process for preparing tacky polyolefin film

Growing community of inventors

Kurashiki, Japan

Nobushige Ikeya