Japan Crown Cork Co Ltd.

Mitsuo Kumata

Tateo Kubo

Hidehiko Ohmi

Hisashi Nakajima

Shinya Matsumoto

Katsuhito Ichimura

Kouichi Tsuchiya

Kiyohisa Kaito

Hiroomi Matsutani

Yuji Tomitaka

Mituru Shionoya

Koji c/o Otsuka Pharmaceutical Co Ltd Kitano

Hiroshi Sato

A metallic container closure including a shell of a thin metal sheet having a circular top panel wall () and a skirt wall (), and a synthetic resin liner arranged in the shell, the skirt wall () having a thread-forming region and an annular groove () positioned at an upper end portion of the thread-forming region, wherein an internal pressure release line A extending in the circumferential direction is arranged in the skirt wall () at a portion over the annular groove (), and annular bead () is arranged so as to pass through between the internal pressure release line A and the annular groove ().

Metallic container closure having internal pressure release function

A metallic container closure comprising a shell of a thin metal sheet having a circular top panel walland a skirt wall, and a synthetic resin liner arranged in the shell, the skirt wallhaving a thread-forming region and an annular groovepositioned at an upper end portion of the thread-forming region, wherein an internal pressure release line A extending in the circumferential direction is arranged in the skirt wallat a portion over the annular groove, and annular beadis arranged so as to pass through between the internal pressure release line A and the annular groove. The metallic container closure effectively releases the gas when the pressure in the container is elevated and effectively prevents the skirt wall from being deformed at a portion where the internal pressure release line A is formed when it is being wrap-seamed with the mouth-and-neck portion of the container.

A container cap which offers improved opening/closing performance and improved touch feeling. Linear protuberances are formed on the circumferential wall of the main portion of the skirt of the container cap of the container. The protuberances include large protuberances having a large height and small protuberances having heights of protrusion from the outer surface of the circumferential wall portion smaller than that of the large protuberances. The main portion has large protuberance regions forming a plurality of large protuberances and small protuberance regions forming a plurality of small protuberances, the large protuberance regions and the small protuberance regions being alternately arranged in the circumferential direction of the main portion.

Container cap

A container closure is composed of a closure body, an outflow tube, and an outer cap. The outflow tube is pivotably mounted on the closure body. The outer cap is mounted on the closure body pivotably between a closed position and an open position. When the outer cap is pivoted from the closed position toward the open position, the outer cap contacts the outflow tube located at the closed position to erect the outflow tube from the closed position to the outflow position. The outer cap is then separated from the outflow tube and brought to the open position. When the outer cap is pivoted from the open position toward the closed position, the outer cap contacts the outflow tube located at the outflow position to tilt the outflow tube from the outflow position to the closed position, and the outer cap is also brought to the closed position.

Container closure with outflow tube

A plastic cap of this invention is opened by tearing-off and is comprising a top plate provided with a sealing portion to be engaged with the mouth of a container, a skirt extending perpendicularly from the top plate, and a tear-off portion arranged around the skirt and defining an upper closure portion for resealing and a lower opening band, wherein in the inner surface of the skirt, at an upper position than the tear-off portion, a diametrically inwardly-directed protrusion which is engaged with a jaw of the container is formed peripherally intermittently, simultaneously, at a lower position than the tear-off portion, a flap piece whose tip portion is engaged with the jaw of the bottle is formed peripherally intermittently, and the engaged protrusion and the flap piece are formed at least alternately in most of the peripheral direction. The plastic cap has excellent sealing reliability, easy openability, and tamper-evident property while the cap height is lowered and the resin weight of the resin is reduced.

Plastic cap

Container closure

A cap comprises a cap body fitted and secured to the mouth of a container, an upper closure provided in the cap body, and a ring-like member which covers the outer surface of a skirt portion of the cap body. The ring-like member and the skirt portion are coupled together through breakable bridge portions. These two members are separated away from each other via cut surfaces but are intimately contacted to each other at the cut surfaces. The cap can be easily removed by hand from the mouth of the container, and can be separated from the container at the time of disposal.

Cap separable from bottle at the time of disposal

A hinged cap comprising a cap body, an outer cylinder formed integrally with said cap body so as to cover the outer surfaces of said cap body and said skirt portion, and an upper closure coupled by hinges to the upper end portion of said outer cylinder, wherein the skirt portion of said cap body is provided with a plurality of slits extending in the axial direction maintaining a distance in the circumferential direction, the skirt portion of said cap body and said outer cylinder are separated away from each other via cut surfaces but are formed integrally together via a plurality of breakable bridge portions and are formed on the upper side or the lower side of the cut surfaces, and the outer surface of the skirt portion of the cap body and the inner surface of the outer cylinder are intimately contacted to each other at the cut surfaces in a state where at least the cap body is fitted to the mouth of the container. The cap has a highly reliable sealing structure and, after used, can be easily removed from the mouth of the container without using any tool. The cap can be produced through a series of steps and offers excellent tamper-evidence.

Hinged cap separable from bottle at the time of disposal

The resin cap of this invention comprises a cap proper provided with a skirt portion and a continuous ring member provided so as to cover the outer surface of the skirt portion of the cap proper. A plurality of axially extending cuts are circumferentially spaced in the skirt portion of the cap proper, and the skirt portion of the cap proper and the ring-like member are separated via a cutting surface, but are integrally formed via a plurality of frangible bridge portions or connecting portions upwardly or downwardly of the cutting surface. The outer surface of the skirt portion of the cap proper and the inner surface of the ring-like member are intimately adhered at a portion of the cutting surface. This cap can form a sealing structure having sealing reliability, and can be opened without using any particular tool. Furthermore, it has excellent tamper-evident characteristics.

Growing community of inventors

Hiratsuka, Japan

Mitsuo Kumata