In the present invention, a hollow molded body is manufactured with an injection stretch blow molding machine for which the molding cycle has been shortened, and energy is saved in the manufacturing of the hollow molded body. A blowing device (10) of a stretch blow molding device (11) includes: a compressed air supp...

An object is to provide an injection stretch blow molding machine and a method for molding a polyethylene container capable of molding a favorable hollow container even if its preform is released from an injection mold early. The injection stretch blow molding machine and the method for molding a polyethylene conta...

An injection apparatus is configured to feed a molten resin into an injection molding section of an injection stretch blow molding machine. The injection apparatus uniformly melts a resin material while the duration from the time of starting plasticizing and kneading till completion of injection is shortened, there...

The purpose of the present invention is to improve the manufacturing efficiency of a hollow molded body through a reduction of the time required for a blow molding step in a molding cycle by making fixation of the container shape of the hollow molded body completed not during the blow molding step but during an ejec...

According to the present invention, while a molten resin can be fed from a hot-runner device such that a high-temperature and low-viscosity resin is not unevenly distributed, a preform in which the high-temperature and low-viscosity resin is not unevenly distributed in the circumferential direction is injection mold...

When a hollow molded body using a preform to be molded with a thin bottom portion is produced while taking advantage of the roughening of the outer surface of an injection core mold, transferred roughening marks are prevented from appearing on the bottom portion of hollow molded bodies, so that the hollow molded bod...

When a preform having been molded while released from a mold at an earlier timing in an injection stretch blow molding machine is stretched and blow molded, the bottom of the preform is prevented from rupturing and the bottom of a hollow molded article is prevented from being uneven in wall thickness to produce suc...

ABSTRACT “METHOD FOR PRODUCING HOLLOW MOLDED ARTICLE AND INJECTION STRETCH BLOW MOLDING MACHINE” A blow mold high-pressure switching step in a blow molding process of an injection stretch blow molding machine is arranged at the first half portion of the blow molding process, to shorten the injection molding p...

Provided are a screw head capable of enhancing agitating performance in the vicinity of an injection position, an injection device, and an injection stretch blow molding machine using the same. The screw head includes a head having a substantially conical shape, a neck portion integrally formed in one axial directi...