PLASTIC BOTTLE

Japanese Patent JP2017159956

A

PROBLEM TO BE SOLVED: To provide a plastic bottle which has a simple structure, and has pressure resistance enough to prevent a bottom thereof from being deformed even if pressure is generated in the bottle.SOLUTION: The plastic bottle has a trunk part 40 and a bottom part 50, where the bottom part comprises an annular bottom grounded part 51, an annular outer wall surface 52 connecting the bottom grounded part to the trunk part, and an inner wall surface 53 connecting the bottom grounded part to the center of the bottom part. The outer wall surface is reduced in diameter downward, from the trunk part toward the bottom grounded part, and the inner wall surface is increased in diameter downward, from the center of the bottom part toward the bottom grounded part. In the bottom grounded part, the outer wall surface and the inner wall surface are connected to form a protruding part 57 protruding in a lower direction of the bottle, where a curvature radius at the inner wall surface side of the protruding part is 1.0 mm or more and 3.0 mm or less and an inner wall angle thereof is 20 degrees or more and 70 degrees or less. Thickness of the bottom grounded part is more than 0.35 mm and 0.80 mm or less.SELECTED DRAWING: Figure 2

OZAWA TETSUYA
ISHIKAWA MASASHI
KUSHIJIMA HIDEKI

JP2017037106A

September 14, 2017

February 28, 2017

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MITSUBISHI CHEM CORP

B65D1/02; B65D23/08

JP2004217266A	2004-08-05
JP2005145516A	2005-06-09
JPS58183308U	1983-12-06

US20110049083A1

2011-03-03

Noriyuki Yamamoto
Akihiko Yamashita
Kishimoto Tatsuto

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