Shionogi Company Limited

Taisei Kako Co., Ltd.

Mitsui Petrochemical Industries, Ltd.

Kozo Itaya

Hirotaka Nishida

Kazutoshi Fukuda

Hideyuki Maekawa

Shinji Hiramoto

Kokichi Sato

A packaging structure composed of a composite synthetic resin sheet having a depressed portion formed therein for holding an article and a metal foil bonded to the sheet, said composite sheet being a three-layer sheet composed of an interlayer of high-density polyethylene and outside layers of a propylene polymer bonded to both surfaces of the interlayer, the interlayer having a thickness of 120 to 800 micrometers, each of the outside layers having a thickness of 15 to 80 micrometers, and the thickness of the interlayer being at least 2.5 times the total thickness of both outside layers; a process for production thereof; and a process for producing a composite (synthetic) resin sheet suitable as a material for the aforesaid packaging structure.

Packaging structure

A packaging structure composed of a composite synthetic resin sheet having a depressed portion formed therein for holding an article and a metal foil bonded to the sheet, said composite sheet being a three-layer sheet composed of an interlayer of high-density polyethylene and outside layers of a propylene polymer bonded to both surfaces of the interlayer, the interlayer having a thickness of 120 to 800 micrometers, each of the outside layers having a thickness of 15 to 80 micrometers, and thickness of the interlayer being at least 2.5 times the total thickness of both outside layers; a process for production thereof; and a process for producing a composite (synthetic) resin sheet suitable as a material for the aforesaid packaging structure.

Process for producing a composite sheet

A vial, particularly a glass vial, having a diagonally disposed cut line which is defined by off-set indentations in the neck portion of the vial.

Glass vial with diagonal cut line

Growing community of inventors

Sakai, Japan

Kozo Itaya