A.k. Technical Laboratory, Inc.

Jin Ooishi

Takekazu Mochizuki

Yutaka Nakamura

Naomichi Hinata

Isamu Yokoyama

Improve the strength of the stretch blow receptacle and make the heat resistant treatment easier, by making the receptacle wall cross-section multi-layered in view of crystalline density, and the crystalline density of the surface layer high density. The inventions concerns a thin plastic receptaclemolded by stretch blowing of a bottomed preformin the longitudinal and transversal directions. The wall cross-section is composed of inside and outside surface layerswhose crystalline density is high by stretching, a core layerpresenting a lower density than the surface layers, and an intermediate layerpresenting a graduated density between both layers

Growing community of inventors

Nagano-ken, Japan

Jin Ooishi