Toyo Seikan Co., Ltd.

Takeshi Uchiyama

Ryouta Ishii

Atsushi Komiya

Kouki Okabe

Ryota Ishii

Rika Nagaharu

Koki Okabe

Hiroyuki Kondo

Masashi Fujioka

Synthetic resin bottle () including tube-shaped body section () comprises eight decompression absorbing panels () disposed at equal intervals in body section () and pillar sections () respectively disposed between said decompression absorbing panels () and formed by arcuate wall surfaces (). Arcuate wall surfaces () of pillar sections () in a cross section of body section () configure parts of one imaginary perfect circle (). A total of circumferential lengths of arcuate wall surfaces () of pillar sections () is 20 to 50% of a total circumferential length of perfect circle (). Consequently, it is possible to realize the synthetic resin bottle having decompression absorbing performance in order to absorb a decrease in internal pressure, the exterior of the body section of the synthetic resin bottle being seen as a cylindrical shape whose shape is almost the same as that of a perfect circle.

Synthetic resin bottle

A synthetic resin bottle, which has a pressure reduction absorbing performance and which exhibits a cylindrical shape in which the appearance of the body section to which the label is attached is similar to a perfect circle, is provided. A synthetic resin bottlehaving cylindrical body sectionhas four pressure reduction absorbing panelsarranged at equal intervals in body section, and column portionseach having an arc-shaped wall surfacearranged between pressure reduction absorbing panels. Arc-shaped wall surfaceof column portionin a cross section of body sectionconstitutes a part of a virtual single true circle. Total circumferential length of arc-shaped wall surfacesof column portionsis 55% to 75% of entire circumferential length of true circle

A container () including an opening part (), a shoulder part (), a barrel part (), and a bottom part (), wherein: the shoulder part () includes a hem part () in which the longitudinal section is curved in a convex arcuate shape toward the outside of the container and which is connected to the barrel part (); and a plurality of groove parts () extending radially from the container-center side toward the outer-peripheral-edge side are formed in the shoulder part () so as to extend at least to a position that reaches an upper end edge (UE) of the hem part ().

Synthetic resin container

Growing community of inventors

Yokohama, Japan

Takeshi Uchiyama