Abstract: A container with separable laminated layers includes an outer layer body, an inner layer body separably laminated on an inner surface of the outer layer body and capable of undergoing volume reduction and shape change, and an ambient air inlet continuously extending between the outer layer body and the inner layer body. The container with separable laminated layers has a bottle shape including a tubular mouth, a shoulder continuous with the mouth, a trunk continuous with the shoulder, and a bottom continuous with the trunk. The trunk includes a squeeze area that is continuous with the shoulder via a circumferential step portion or a circumferential rib portion. The step portion or the rib portion is provided with a recess that is concave toward an inner side of the container.

Abstract: A container with separable laminated layers includes an outer layer body, an inner layer body separably laminated on an inner surface of the outer layer body and capable of undergoing volume reduction and deformation, and an ambient air inlet extending between the outer layer body and the inner layer body. The container has a bottle shape with a tubular mouth, a shoulder that is continuous with the mouth, a trunk that is continuous with the shoulder, and a bottom that is continuous with the trunk. The trunk includes a squeeze area. The squeeze area has a substantially polygonal tubular shape with three or more panel-shaped portions, and three or more corner portions that each connect adjacent panel-shaped portions.

Abstract: A double-layered container including an inner and outer container. A mouth, body and bottom portion respectively extend from top to bottom along a bottle axis. An outside air introduction hole is provided. A diameter of an intermediate portion between an upper and lower end of the body portion is smaller than a diameter of the lower end portion. The intermediate and lower end portions are connected via a step portion. A bottom wall portion includes a ground contact portion and depressed portion. A distance of the outer container inner surface from a connection portion to an outer peripheral edge portion of the ground contact portion in a vertical cross-sectional view along the bottle axis is 1.15 times or less a distance along the outer container inner surface and the bottle axis to an inner peripheral edge portion of the ground contact portion in the vertical cross-sectional view.

Abstract: A double container includes an inner container and an outer container, has a mouth portion, a body portion and a bottom portion disposed in this order from top to bottom along a direction of a bottle axis, and includes an outside air introduction hole. The bottom wall portion of the bottom portion includes a ground contact portion and a recessed portion. A peripheral wall portion of the depressed portion extends inward in a radial direction as it goes upward. A plurality of ridge portions protruding radially inward are provided on the peripheral wall portion of the depressed portion at intervals in a circumferential direction. The peripheral wall portion of the depressed portion or the ridge portion extends inward in the radial direction via a step portion as it goes upward.

Abstract: A container with separable laminated layers includes an outer layer body, an inner layer body separably laminated on an inner surface of the outer layer body and capable of undergoing volume reduction and shape change, and an ambient air inlet continuously extending between the outer layer body and the inner layer body. The container with separable laminated layers has a bottle shape including a tubular mouth, a shoulder continuous with the mouth, a trunk continuous with the shoulder, and a bottom continuous with the trunk. The trunk includes a squeeze area that is continuous with the shoulder via a circumferential step portion or a circumferential rib portion. The step portion or the rib portion is provided with a recess that is concave toward an inner side of the container.

Abstract: 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.

Abstract: 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.