Abstract: A container has a body which comprises front end rear walls, and the side walls. Each of the front and rear walls has an elliptic cross section, and is provided with a lateral recess. Each of the side walls is a vertical plan which intersects the elliptic cross section of the front and rear walls, and is provided with a plurality of reinforcements.

Abstract: A container has a body which comprises front and rear walls, and the side walls. Each of the front and rear walls has an elliptic cross section, and is provided with a lateral recess. Each of the side walls is a vertical plane which intersects the elliptic cross section of the front and rear walls, and is provided with a plurality of reinforcements. The container has a bottom which comprises a peripheral wall connected to the body and a bottom wall. The peripheral wall comprises slightly inclined front and rear walls, and side walls inclined by a predetermined angle. The peripheral wall is provided with a reinforcing rib.

Abstract: Provided is a rubber composition comprising 100 parts by weight of a rubber component comprising at least one selected from the group consisting of natural rubber and synthetic rubbers and 0.

Abstract: Provided is a rubber composition comprising 100 parts by weight of a rubber component comprising at least one selected from the group consisting of natural rubber and synthetic rubbers and 0.

Abstract: Provided is a rubber composition comprising 100 parts by weight of a rubber component comprising at least one selected from the group consisting of natural rubber and synthetic rubbers and 0.

Abstract: The blow molded preform 1′ of a laminated wall structure comprises a bulging shoulder portion 4′, which has a diameter that widens slightly in the downward direction; a bottom shell portion 7′ for molding the bottom 7, which has been blow molded from the corresponding portion of parison P so as to have a widened and deformed shape; an inner overhang wall portion 3′ in any position starting from the opposite side of the neck ring 3 and ending at the upper portion of the bulging shoulder portion 4′, with the inner wall portion 3′ having a diameter that widens in the downward direction; and/or a radially widened connecting portion 6′ of an arced shape, which has a larger diameter than the barrel portion 5′ so that the entire bottom including the bottom shell portion 7′ takes a bulging spherical shape.

Abstract: There is provided a cylindrical extrusion-blow molded container, or a cylindrical delaminatable blow-molded container in particular, having an inner layer made of a poorly fusion-bonded resin material such as nylon, in order to improve the fusion-bond of the bottom seal section of the container, to prevent the bottom from cracking.In a cylindrical extrusion-blow mold container, or a cylindrical delaminatable blow-molded container having an air inlet hole arranged at a neck of the container, a bottom seal section in a bottom wall of a bottom is formed with an elliptic thick and raised section arranged in and near the bottom seal section, said elliptic thick and raised section approximately showing an ellipsoid having an elliptic contour with its major axis running along a parting line.

Abstract: A crucible used with a precision casting device, especially used for dental purposes, which is vertically or axially divided into a plurality of segments, these segments being held together to form a complete crucible during heating and melting steps and readily released to discharge the contents downwards during casting step.