Japan Crown Cork Co Ltd.

Orihiro Engineering Co., Ltd.

Shinji Ooka

Orihiro Tsuruta

Shinya Matsumoto

Yuji Tomitaka

Naoyuki Abe

Manabu Aihara

A capped spout of the present invention has a spout () and a cap () that engages with the spout. Spout () has a cylindrical body () and a welding part (). Cylindrical body () has an interior that serves as a discharge passage () for discharging liquid content in a bag-shaped package, wherein the cap () is attached to the cylindrical body () in order to close an opening of an outlet end of the discharge passage. The welding part () is formed outside the cylindrical body () and is welded to an opening of the package. The capped spout of the present invention further has a thin film part () that is formed inside the cylindrical body () in order to close an opening of an inlet end of the discharge passage. Thin film part () has a first surface that faces an interior of the cylindrical body, the interior being closed by the cap () and the thin film part (). A circular groove () that is concentric with the thin film part is formed on the first surface. The circular groove () is formed of an arc-shaped first groove () and an arc-shaped second groove () that is longer than the first groove (). Third linear grooves () extend on the first surface outwardly from each of both ends of the second groove () in a radial direction of the cylindrical body (). The first groove () is unbreakable and the second () and third grooves () are breakable. An arc-shaped fourth groove () is further formed on the first surface, wherein the fourth groove is located radially outward of the first groove () between a pair of the third grooves (). The fourth groove () is unbreakable.

Capped spout

A plastic cap comprising a top panel and a skirt hanging down from the peripheral edge of the top panel, the inner surface of the top panel forming an inner ring that forms a seal upon coming into intimate contact with the inner surface of the wall of the mouth of a container, and the inner surface of skirt forming a screw thread that comes into engagement with a screw thread formed on the outer surface of the wall of the mouth of the container, wherein a slender recessed portion is formed in a number of at least one in the inner surface of said inner ring extending upward from an end thereof. The cap features both excellent sealing and excellent venting.

Plastic cap featuring excellent sealing and venting

Growing community of inventors

Hiratsuka, Japan

Shinji Ooka