Yoshino Kogyosho Co., Ltd.

Tetsuro Usami

Takayuki Kobayashi

Hiroaki Imai

Tsutomu Asari

Seiichi Asaoka

Takahiro Haruna

The present invention relates to a bottle having a cylindrical shape with a bottom and formed of a synthetic resin material. In the bottle, a bottom portion includes a bottom wall portion, and a cylindrical heel portion. A plurality of recessed portions are provided in the bottom portion at equal intervals in a circumferential direction. A bottom surface of each of the plurality of recessed portions has a rectangular shape extending in the radial direction when viewed from below. When an interval in the circumferential direction between upper end portions located at the heel portion, among bottom surfaces of recessed portions adjacent to each other in the circumferential direction of the plurality of recessed portions, is defined as A, and a size in the circumferential direction of the upper end portions of the bottom surfaces of the recessed portions is defined as B, 1.0<A/B<3.2 is satisfied.

Bottle

A synthetic resin container, the container including: a parting line; and a plurality of reduced pressure absorbing panels each formed as a groove extending in the vertical direction while twisting in the circumferential direction, the reduced pressure absorbing panels being disposed in the trunk, in which: when the parting line passes through an upper part of a first reduced pressure absorbing panel and through a lower part of a second reduced pressure absorbing panel, the first reduced pressure absorbing panel is shallower in depth at the upper part thereof than at a central part thereof in the vertical direction, and the second reduced pressure absorbing panel is shallower in depth at the lower part thereof than at a central part thereof in the vertical direction.

Synthetic resin container

A synthetic resin container that effectively absorbs reduced pressure generated inside the container due to hot filling to maintain the appearance and shape. A synthetic resin container includes a mouth as a dispensing spout for a content medium, a trunk, extending contiguous to the mouth via a shoulder, and a bottom, closing a lower end of the trunk. The trunk is provided with reduced pressure absorbing panels, which are formed as ribs extending in the vertical direction while twisting in the circumferential direction about a central axis of the trunk and which are arranged side by side in the circumferential direction of the trunk. Twist angle of a lower end with respect to an upper end of each reduced pressure absorbing panel about the central axis is 50 degrees or more.

The present invention is a pressure reduction-absorbing bottle having a cylindrical shape with a bottom made of a synthetic resin material in which a bottom wall portion of a bottom portion of the bottle includes a grounding portion, a rising circumferential wall portion, a movable wall portion, and a central wall portion, the movable wall portion includes a curved portion having a curved surface shape protruding downward, the curved portion is connected to an outer end portion of the central wall portion in a bottle radial direction, and a lowest portion of the curved portion positioned at a lowest position thereof is located at a portion of the curved portion further outward in the bottle radial direction than a central position of the curved portion in the bottle radial direction.

Pressure reduction-absorbing bottle

Provided is a synthetic resin container that effectively absorbs the reduced pressure generated inside the container as a result of hot filling and that also prevents deterioration in appearance of a label applied to an outer circumferential surface of a trunk portion of the container. A synthetic resin container according to the present disclosure includes a mouth portion, a trunk portion, and a bottom portion. The trunk portion is provided with a plurality of reduced pressure absorbing panels extending in the vertical direction while twisting in the circumferential direction and being arranged side by side in the circumferential direction. Each reduced pressure absorbing panel has a narrow-width portion located in a region between the panel upper end and the panel lower end. A width of each reduced pressure absorbing panel is reduced in the narrow-width portion than in the panel upper end and the panel lower end.

Growing community of inventors

Tokyo, Japan

Tetsuro Usami