US 12,251,869 B2
Container forming apparatus, container forming method, container, and instant food packaging method using container
Byung Kook Lee, Seoul (KR); Hui Jae Song, Seoul (KR); Kyoung Sik Cho, Seoul (KR); and Gyu Hwan Cha, Seoul (KR)
Assigned to CJ CHEILJEDANG CORPORATION, Seoul (KR)
Appl. No. 17/258,548
Filed by CJ CHEILJEDANG CORPORATION, Seoul (KR)
PCT Filed Jun. 13, 2019, PCT No. PCT/KR2019/007137
§ 371(c)(1), (2) Date Jan. 7, 2021,
PCT Pub. No. WO2020/013463, PCT Pub. Date Jan. 16, 2020.
Claims priority of application No. 10-2018-0079214 (KR), filed on Jul. 9, 2018.
Prior Publication US 2021/0162649 A1, Jun. 3, 2021
Int. Cl. B29C 51/34 (2006.01); B29C 51/36 (2006.01); B29C 51/44 (2006.01); B65B 25/00 (2006.01); B65D 1/26 (2006.01); B29L 31/00 (2006.01)
CPC B29C 51/34 (2013.01) [B29C 51/36 (2013.01); B29C 51/44 (2013.01); B65B 25/001 (2013.01); B65D 1/26 (2013.01); B29L 2031/712 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A container forming apparatus for forming a container by thermoforming, comprising:
a first mold part which includes a bottom forming part for forming a bottom portion of the container and a side forming part for extending to be inclined upward from the bottom forming part and forming a part of a side portion of the container and is lifted upward to separate and take out the container in which the forming is completed to press the container;
a second mold part which is disposed outside the first mold part and forms the remaining portion except for the part of the side portion,
wherein the second mold part is provided to be spaced apart at a predetermined interval from the first mold part to form a stepped portion protruding stepwise from the side portion,
wherein the side portion of the container includes a first side surface which extends to be inclined upward from the bottom portion and has a first slope with respect to the bottom surface of the bottom portion, and a second side surface which extends to be inclined upward from the first side surface and has a second slope with respect to the bottom surface,
wherein the side forming part of the first mold part is formed to be inclined at the first slope, and the second mold part comprises:
a first inclined surface which is inclined at the first slope with respect to a reference surface of the bottom forming part at the same angle as the bottom surface and forms the first side surface together with the side forming part,
wherein the first side surface includes a first region which is a region that continues from the bottom part and a second region located above the first region,
wherein the side forming part of the first mold part forms the first region, and the first inclined surface of the second mold part forms the second region, and
wherein the stepped portion is located between the first region and the second region and protrudes stepwise along a circumferential direction of the first side surface.