Abstract: A synthetic resin container in a bottle shape including 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, in which: the trunk is provided with a reduced pressure absorbing portion having a plurality of reduced pressure absorbing recesses arranged side by side in the circumferential direction, and the reduced pressure absorbing portion is formed in a barrel shape having an intermediate part diameter at an intermediate part in the vertical direction larger than an end diameter at either one of ends in the vertical direction.

Abstract: A biaxially stretched, blow molded synthetic resin bottle with a bottom includes a sunken bottom portion that is capable of drawing upward in a reversible manner, when internal pressure goes down. This sunken bottom portion includes an inner peripheral wall portion standing from near an inner edge of a ground contact portion disposed along a peripheral foot, a central concave portion disposed at a center of the bottom, a reversible wall portion in a flat ring shape, which is reversibly deformable into an upward drawing state and which connects an upper end of the inner peripheral wall to the base of the central concave portion, and a circular rib wall portion disposed at a connection between the reversible wall portion and the upper end of the inner peripheral wall portion so as to perform the function as a peripheral rib.

Abstract: A biaxially stretched, blow molded synthetic resin bottle with a bottom includes a sunken bottom portion that is capable of drawing upward in a reversible manner, when internal pressure goes down. This sunken bottom portion includes an inner peripheral wall portion standing from near an inner edge of a ground contact portion disposed along a peripheral foot, a central concave portion disposed at a center of the bottom, a reversible wall portion in a flat ring shape, which is reversibly deformable into an upward drawing state and which connects an upper end of the inner peripheral wall to the base of the central concave portion, and a circular rib wall portion disposed at a connection between the reversible wall portion and the upper end of the inner peripheral wall portion so as to perform the function as a peripheral rib.

Abstract: A biaxially stretched, blow molded synthetic resin bottle with a bottom includes a sunken bottom portion that is capable of drawing upward in a reversible manner, when internal pressure goes down. This sunken bottom portion includes an inner peripheral wall portion standing from near an inner edge of a ground contact portion disposed along a peripheral foot, a central concave portion disposed at a center of the bottom, a reversible wall portion in a flat ring shape, which is reversibly deformable into an upward drawing state and which connects an upper end of the inner peripheral wall to the base of the central concave portion, and a circular rib wall portion disposed at a connection between the reversible wall portion and the upper end of the inner peripheral wall portion so as to perform the function as a peripheral rib.

Abstract: A biaxially stretched, blow molded synthetic resin bottle with a bottom includes a sunken bottom portion that is capable of drawing upward in a reversible manner, when internal pressure goes down. This sunken bottom portion includes an inner peripheral wall portion standing from near an inner edge of a ground contact portion disposed along a peripheral foot, a central concave portion disposed at a center of the bottom, a reversible wall portion in a flat ring shape, which is reversibly deformable into an upward drawing state and which connects an upper end of the inner peripheral wall to the base of the central concave portion, and a circular rib wall portion disposed at a connection between the reversible wall portion and the upper end of the inner peripheral wall portion so as to perform the function as a peripheral rib.

Abstract: A biaxially stretched, blow molded synthetic resin bottle with a bottom comprising a sunken bottom portion, which is formed by contouring and concaving the bottom plate upward in a direction of bottle inside, starting from an inner edge of a ground contact portion disposed along the peripheral foot, the sunken bottom portion being capable of drawing upward in a reversible manner, when internal pressure goes down.

Abstract: A biaxially stretched, blow molded synthetic resin bottle with a bottom includes a sunken bottom portion that is capable of drawing upward in a reversible manner, when internal pressure goes down. This sunken bottom portion includes an inner peripheral wall portion standing from near an inner edge of a ground contact portion disposed along a peripheral foot, a central concave portion disposed at a center of the bottom, a reversible wall portion in a flat ring shape, which is reversibly deformable into an upward drawing state and which connects an upper end of the inner peripheral wall to the base of the central concave portion, and a circular rib wall portion disposed at a connection between the reversible wall portion and the upper end of the inner peripheral wall portion so as to perform the function as a peripheral rib.

Abstract: A biaxially stretched, blow molded synthetic resin bottle with a bottom includes a sunken bottom portion that is capable of drawing upward in a reversible manner, when internal pressure goes down. This sunken bottom portion includes an inner peripheral wall portion standing from near an inner edge of a ground contact portion disposed along a peripheral foot, a central concave portion disposed at a center of the bottom, a reversible wall portion in a flat ring shape, which is reversibly deformable into an upward drawing state and which connects an upper end of the inner peripheral wall to the base of the central concave portion, and a circular rib wall portion disposed at a connection between the reversible wall portion and the upper end of the inner peripheral wall portion so as to perform the function as a peripheral rib.

Abstract: The technical problem of this invention is to eliminate the need to use deformable panel walls and to find the body of a shape that no false deformation, such as dented deformation, takes place in a portion of the body due to the hot filling of the contents or the reduced pressure created by the treatment of retort-packed foods. The object of this invention is to obtain a bottle that can inhibit the deformation caused by reduced pressure, has a high buckling strength, and is good in outer appearance. As the solution, there is provided a biaxially drawn, blow-molded bottle made of a synthetic resin, in which the surface rigidity of the wall of body is set in such a manner that a part of the body wall cannot become dented inward under a reduced inner pressure of at least 350 mmHg (46.7 kPa).

Abstract: The technical problem of this invention is to eliminate the need to use deformable panel walls and to find the body of a shape that no false deformation, such as dented deformation, takes place in a portion of the body due to the hot filling of the contents or the reduced pressure created by the treatment of retort-packed foods. The object of this invention is to obtain a bottle that can inhibit the deformation caused by reduced pressure, has a high buckling strength, and is good in outer appearance. As the solution, there is provided a biaxially drawn, blow-molded bottle made of a synthetic resin, in which the surface rigidity of the wall of body is set in such a manner that a part of the body wall cannot become dented inward under a reduced inner pressure of at least 350 mmHg (46.7 kPa).