US 12,351,379 B2
Tube container
Minoru Kawasaki, Tokyo (JP); Kaho Sakamoto, Tokyo (JP); Shunsuke Yajima, Tokyo (JP); Takeshi Saito, Tokyo (JP); Seiki Miyoshi, Tokyo (JP); and Naoya Urakawa, Tokyo (JP)
Assigned to TOPPAN INC., Tokyo (JP)
Filed by TOPPAN INC., Tokyo (JP)
Filed on Sep. 2, 2022, as Appl. No. 17/902,784.
Application 17/902,784 is a continuation of application No. PCT/JP2021/009577, filed on Mar. 10, 2021.
Claims priority of application No. 2020-041091 (JP), filed on Mar. 10, 2020; application No. 2020-041831 (JP), filed on Mar. 11, 2020; application No. 2020-054487 (JP), filed on Mar. 25, 2020; application No. 2020-130339 (JP), filed on Jul. 31, 2020; application No. 2021-007150 (JP), filed on Jan. 20, 2021; application No. 2021-026353 (JP), filed on Feb. 22, 2021; application No. 2021-027296 (JP), filed on Feb. 24, 2021; and application No. 2021-031592 (JP), filed on Mar. 1, 2021.
Prior Publication US 2023/0020804 A1, Jan. 19, 2023
Int. Cl. B65D 3/06 (2006.01); B65D 3/20 (2006.01); B65D 3/28 (2006.01); B65D 75/08 (2006.01); B65D 75/26 (2006.01); B65D 75/58 (2006.01)
CPC B65D 75/5883 (2013.01) [B65D 3/06 (2013.01); B65D 3/20 (2013.01); B65D 3/28 (2013.01); B65D 75/08 (2013.01); B65D 75/26 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A tube container comprising:
a tube-like body portion that is closed at one end, and
a spout portion mounted at the other end of the body portion, wherein
the body portion is formed by a material composed mainly of paper,
the body portion is formed using a body portion-forming blank made of a laminated sheet in which at least an outermost layer and innermost layer are thermoplastic resin layers,
the laminated sheet includes:
an inner side laminated film having the innermost layer and not including a paper,
an outer side laminated film having the outermost layer and not including a paper, and
a paper layer laminated between the inner side laminated film and the outer side laminated film,
the inner side laminated film and the outer side laminated film are bonded with an adhesive layer such that an end surface of the paper layer is not exposed at least at both facing end edges of the body portion-forming blank and such that parts where the paper layer is not laminated between the inner side laminated film and the outer side laminated film are formed at both sides of the facing end edges of the body portion-forming blank,
the both facing end edges of the body portion-forming blank have their outermost layer and innermost layer surfaces overlapping and heat-sealed,
the laminated sheet has a thickness of 30 μm to 300 μm,
the spout portion comprises a flat closed portion perpendicular to a height direction of the body portion the tube container, and
the other end of the body portion of the tube container is bonded to a surface on a side of the body portion of the tube container of the closed portion that is opposite to the one end, at an peripheral portion of the closed portion.