US 12,384,612 B2
Microwavable pouch
Takashi Miura, Yokohama (JP); Shie Matsunaga, Yokohama (JP); and Reina Tokairin, Yokohama (JP)
Assigned to TOYO SEIKAN CO., LTD., Tokyo (JP)
Filed by Toyo Seikan Co., Ltd., Tokyo (JP)
Filed on Jun. 9, 2023, as Appl. No. 18/207,813.
Application 18/207,813 is a continuation of application No. PCT/JP2021/041822, filed on Nov. 15, 2021.
Claims priority of application No. 2020-206425 (JP), filed on Dec. 14, 2020.
Prior Publication US 2023/0312211 A1, Oct. 5, 2023
Int. Cl. B65D 77/22 (2006.01); B65D 81/34 (2006.01)
CPC B65D 77/225 (2013.01) [B65D 81/3461 (2013.01); B65D 2205/00 (2013.01); B65D 2581/3437 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A microwavable pouch having a rectangular outer shape in plan view, and comprising an automatic steam release mechanism, wherein
the automatic steam release mechanism includes a steam release portion and a steam release seal portion surrounding the steam release portion,
with an inscribed ellipse being in contact with centers of inner edges of sides of a peripheral seal portion of the pouch, the steam release seal portion is formed so that a circumference of the inscribed ellipse is positioned in a width region of a seal separation start portion of the steam release seal portion closest to a center point of an accommodation portion or in a vicinity of the seal separation start portion, and
the inscribed ellipse has a minor axis and a major axis, with a ratio of the minor axis to the major axis being 0.6 to 0.97.