Mitsui Petrochemical Industries, Ltd.

Otsuka Pharmaceutical Factory, Inc.

Hiroshi Tanaka

Shigetoshi Kashiyama

Fujio Inoue

Masamitsu Izumi

Katsushi Watanabe

Kozo Morishige

The invention provides a polyolefin drug packaging material characterized in that the content, in the polyolefin, of substances containing 12 to 26 carbon atoms is not more than 150 ppm. The packaging material of the invention is useful because the risk of its reacting with and adversely affecting the drug packaged therewith is minimum.

Polyolefin packaging material for drug packaging, method of production

Disclosed is a resin laminate comprising: an outer layer formed from a linear polyethylene having a specific density; an inner layer formed from a linear polyethylene having a specific density; and an intermediate layer(s) provided between the outer layer and the inner layer, wherein at least one intermediate layer comprises a linear polyethylene having a specific density different from those of the linear polyethylenes for forming the outer layer and the inner layer; and at least one layer of the outer, inner and intermediate layers is formed from a linear polyethylene composition containing a high-density polyethylene having a specific density. Also disclosed in a container formed from the resin laminate. The resin laminate is excellent in hygienic qualities, transparency, flexibility and heat resistance. The container is hardly distorted even when subjected to a sterilization process under severe conditions, and is excellent in heat resistance, sealing strength, drop strength, transparency and flexibility.

Resin laminate

Growing community of inventors

Ichihara, Japan

Hiroshi Tanaka