Toyo Seikan Kaisha, Ltd.

Toyo Seikan Group Holdings, Ltd.

Jotaro Nagao

Norihisa Hirota

Yutaka Asano

Kazunobu Watanabe

[Problem] To suppress the deviation of a synthetic resin to be fed to a metal mold and to enable the to-be-compression-molded synthetic resin to be easily molded into a shape of a pre-molded article that is to be molded. [Means for Solution] A female moldincludes a moving rodand female mold bodysurrounding the moving rod, the female mold bodyforming a cavitythat is opened upward, the moving rodmoving up and down between a normal position and an elevated position above the normal position, and when a synthetic resinis to be fallen down from the a synthetic resin cutting/holding unit, the moving rodmoves to the elevated position so that the synthetic resinfalls down on the upper surface of the center member.

Compression-molding apparatus and compression-molding method

A method of feeding a composite molten resin capable of easily forming a multi-kind-multi-layer preform. An apparatus for feeding the composite molten resin has a nozzle portion which includes an outer discharge port in which an outermost annular flow path through which a main layer-forming molten resin flows, meets an outer annular flow path through which a sub-layer-forming molten resin flows inside of the outermost annular flow path; and an inner discharge port in which a shell layer-forming molten resin annularly flowing inside of the outer conflux path, meets the core layer-forming molten resin flowing inside the shell layer; the outer discharge port and the inner discharge port being arranged in this order from the downstream toward the upstream in a direction in which the molten resins flow; wherein provision is made of a shaft-like opening/closing valve for opening and closing the inner discharge port, and a gear pump for intermittently discharging the sub-layer-forming molten resin.

Method of feeding composite molten resin and apparatus for feeding the same

A cup-type polypropylene container obtained by compression-molding a polypropylene and having at least a body portion and a bottom portion, wherein the body portion has a thickness of not larger than 1.0 mm and a value Krelating to peak intensity ratio and/or a value Krelating to diffraction intensity ratio as defined herein. The cup-type polypropylene container features improved falling strength in the body portion and at the open end such as flange, improved pressure strength and excellent mechanical strength in the body portion. Also disclosed is a method of molding the cup-type polypropylene container.

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Yokohama, Japan

Jotaro Nagao