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1. (WO2017017892) CONTAINER OPENING STRUCTURE AND CONTAINER

Pub. No.:    WO/2017/017892    International Application No.:    PCT/JP2016/003086
Publication Date: Fri Feb 03 00:59:59 CET 2017 International Filing Date: Tue Jun 28 01:59:59 CEST 2016
IPC: B65D 1/02
B65D 47/06
Applicants: TOYO SEIKAN CO.,LTD.
東洋製罐株式会社
Inventors: MIYAZAKI, Akihito
宮崎 哲人
YOSHIHIRO, Kenji
吉弘 憲司
SOMEYA, Hideaki
染谷 英明
MISAWA, Noriko
三沢 規子
ISOBE, Takeshi
磯部 武志
SUGIYAMA, Takashi
杉山 尚
WATANABE, Atsushi
渡部 篤
Title: CONTAINER OPENING STRUCTURE AND CONTAINER
Abstract:
The present invention ensures high sealing performance even if a container receives a strong impact or is filled with high-temperature contents. A container opening (10) of a container main body (1) has, in order from an opening end (10a) side: a first outer circumferential section (11) that protrudes towards to the outer circumferential side of the container opening (10) and comes in contact with an inner surface (34a) of an outer cylindrical section (34) of a lid (2); an inner circumferential section (13) that protrudes towards the inner circumferential side of the container opening (10), is in close contact with the entire perimeter of the outer surface (35a) of an inner cylindrical section (35) of the lid (2), and forms a sealed section (S); and a second outer circumferential section (12) that protrudes towards the outer circumference of the container opening (10) and comes in contact with the inner surface (34a) of the outer cylindrical section (34). The second outer circumferential section (12) has a stepped section (12a) on the opposite side to the opening end (10a) side and engaged with a first protrusion (37) in the inner surface (34a) of the outer cylindrical section (34). A section (U) of the container opening (10) from the first outer circumferential section (11) via the inner circumferential section (13) to the second outer circumferential section (12) has a U-shape that is curved towards the inner circumferential side of the container opening (10), in a cross-section including a center axial line of the container opening (10), such that the inner circumferential section (13) presses the outer surface (35a) of the inner cylindrical section (35).