Abstract: A preform for molding a dual container, in which an inner preform is inserted into an outer preform in a state in which a mouth portion of the inner preform is fitted into a mouth portion of an outer preform, the inner preform is formed of a crystalline resin, a crystallized region is provided in at least a portion of the inner preform, the crystallized region having a degree of crystallization greater than that of the other portion, the portion of the inner preform adjacent to the mouth portion from below the mouth portion and located below the outside air introduction hole, a step portion facing upward and a rib extending upward from the step portion are formed on an inner circumferential surface of the inner preform, and at least a part of the rib is adjacent to the crystallized region from above the crystallized region.

Abstract: A preform for molding a dual container, in which an inner preform is inserted into an outer preform in a state in which a mouth portion of the inner preform is fitted into a mouth portion of an outer preform, the inner preform is formed of a crystalline resin, a crystallized region is provided in at least a portion of the inner preform, the crystallized region having a degree of crystallization greater than that of the other portion, the portion of the inner preform adjacent to the mouth portion from below the mouth portion and located below the outside air introduction hole, a step portion facing upward and a rib extending upward from the step portion are formed on an inner circumferential surface of the inner preform, and at least a part of the rib is adjacent to the crystallized region from above the crystallized region.

Abstract: A three-dimensional shape measuring apparatus includes a moving frame arranged to surround a measurement space. The moving frame is arranged to be movable in a vertical direction. A plurality of sensors is disposed opposite to each other on two opposite sides of the moving frame and are arranged to effect a horizontal scanning of light to measure distances to a human body being measured. A driving mechanism moves the moving frame. An analyzer calculates distances to the human body, based on output signals from respective sensors, to analyze data of a surface position of the human body, i.e., a three-dimensional shape thereof. The apparatus further includes a placement state on which the human body is placed. Since the sensors are located so as to face the front and the back of the human body, the apparatus can also measure portions below an armpit and below a crotch.