Yoshino Kogyosho Co., Ltd.

The Procter Gamble Company

Tsugio Arai

Tsutomu Kobayashi

Mitsuo Furusawa

Akira Nishigami

Tadayasu Koga

Chiaki Kamimura

Eiji Gotou

Masaru Ono

The invention is aimed at preventing bottom crack from occurring in a peelably laminated plastic container and maintaining the container stably in good in-use condition. This can be achieved by increasing the anti-peeling strength of a pair of rib strips, with which the bottom rib is formed, in the bottom seal that has been obtained by pinching off the parison at the bottom and molding the parison into a blow molded, peelably laminated plastic container. The bottom sealof a blow molded, peelably laminated containeris reinforced by a pair of rib stripswhich are pressed to each other to form the bottom rib. A multiple number of cavitiesare formed in the bottom ribin such a way that the rib stripon one side is pushed toward, and caved into, the rib strip on the other side at several points, and vice verse. An expanded portionis formed in the ceiling of each cavity. As a result, an undercut engagement portionis formed along the contact faces of both rib stripsso that anti-cracking bottom strength of the bottom seal is enhanced.

Blow molded container

A refill case that includes a middle plate, the middle plate has a bottomed short cylinder shape that contains a cosmetic item and an outward brim along the periphery, a case body that accepts and keeps the middle plate, and a cap that is fitted around the case body detachably in screw engagement. The refill case also includes a ring-shaped gasket made of a soft, elastic material used to seal the middle plate through tight contact of the brim, and a butting wall disposed on either one of the case body or the cap to butt against the other one at a position in which screw engagement of the cap is complete and in which soft contact deformation of the gasket is controlled within a range of elastic deformation. The gasket is fitted to the cap in an undetachable manner but having play relative to the roof.

Refill case

A snap-hinged cap includes a main body section of thermoplastic synthetic resin, a cap integrally molded with the main body section, a film hinge connecting the main body section and the cap, and straps arranged on both lateral sides of the film hinge. The straps are connected to the main body section and the cap at connecting sections. Each of the straps has a center line longer than a straight line between the connecting sections. The skirt section of the cap has a peripheral wall which includes a thin portion located adjacent to the film hinge and the straps and a remaining portion.

Snap-hinged cap

Pump device for a container

Growing community of inventors

Ibaraki, Japan

Tsugio Arai