Toshiba Kikai Kabushiki Kaisha

Koichi Kanazawa

Hiroshi Kanno

Koichi Ozawa

Nobuhide Tomura

Shigeru Miyazaki

Tsugio Toyama

Hiromu Saijo

Toshihiro Ozawa

In a hot runner exchange apparatus for use in a vertical type injection molding machine made up of a metal mode, a mold clamping device for opening and closing the metal mold in the vertical direction, an injection device having a nozzle provided at the front end of a heating cylinder and a hot runner acting as a passage of molten resin supplied to the metal mold, there are provided a hanger for hanging the hot runner, a device for vertically moving the hung hot runner and a driving device for moving the hung hot runner in the axial direction thereof.

Hot runner exchange apparatus for use in an injection molding machine

A PVA film successively oriented in two orthogonal directions is prepared by firstly elongating the film in the longitudinal direction by more than 200% while maintaining the water content (Z .times. 100)% at a value of from 10 to 35% and the temperature in a range of from (1.50/Z +20).degree. C to 75.degree. C. The film is then preheated while maintaining its water content at least 7%, and then elongated laterally by more than 200% at a temperature of from 45.degree. to 110.degree. C. Then the film is heat treated at a temperature of 110.degree. to 210.degree. C while permitting the film to shrink by less than 15% in the lateral direction. Finally, the film is cooled to room temperature under tension.

Method of manufacturing polyvinyl alcohol films oriented in two

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Susono, Japan

Koichi Kanazawa