US 12,448,196 B2
Packaging container
Hikaru Nakamoto, Sagamihara (JP); Yoshinari Suganuma, Sagamihara (JP); Ichiro Hayashi, Tokyo (JP); and Ryuya Nagao, Sagamihara (JP)
Assigned to DAIWA CAN COMPANY, Tokyo (JP)
Filed by DAIWA CAN COMPANY, Tokyo (JP)
Filed on Jul. 24, 2023, as Appl. No. 18/357,595.
Application 18/357,595 is a continuation of application No. PCT/JP2022/002424, filed on Jan. 24, 2022.
Claims priority of application No. 2021-009792 (JP), filed on Jan. 25, 2021.
Prior Publication US 2023/0365315 A1, Nov. 16, 2023
Int. Cl. B65D 77/30 (2006.01); B65D 1/34 (2006.01); B65D 77/20 (2006.01)
CPC B65D 77/2024 (2013.01) [B65D 1/34 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A packaging container comprising:
a housing part that houses a content;
a flange part provided on an outer circumference of an opening of the housing part integrally with the housing part;
a sealing ridge provided on a top face of the flange part, annularly formed over an entire circumference of the flange part so as to be protruded upward, and having a first protrusion that protrudes outward in a plane direction of the flange part at a position corresponding to an opening start part, wherein the first protrusion has a pointed end; and
a second protrusion provided on the top face of the flange part so as to be protruded upward, and forming a gap along an inner face of the first protrusion on an inner circumferential side of the first protrusion of the sealing ridge, wherein the second protrusion is formed conforming to the first protrusion, the second protrusion being a dogleg shaped ridge, wherein the second protrusion has one end continuous with the first protrusion, and another end discontinuous with the first protrusion.