US 12,479,617 B2
Tail sealing method of tube container and a product thereof
Chih-Jung Chiang, Fujian (CN)
Filed by XIAMEN BONMART MACHINERY AND PLASTIC CO., LTD., Fujian (CN)
Filed on Nov. 10, 2023, as Appl. No. 18/388,538.
Claims priority of application No. 202211484981.2 (CN), filed on Nov. 24, 2022.
Prior Publication US 2024/0174399 A1, May 30, 2024
Int. Cl. B65B 61/06 (2006.01); B65B 7/14 (2006.01); B65D 35/16 (2006.01)
CPC B65B 61/06 (2013.01) [B65B 7/14 (2013.01); B65D 35/16 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A tail sealing method of a tube container; comprising the steps of:
step 1: placing a tube body into a tail sealing machine; aligning a left mold and a right mold of the tail sealing machine with an end opening of a tube tail of the tube body, and then closing the left mold and the right mold against each other; surfaces of the left mold and the right mold opposite to each other are each provided with a pressing portion, which is configured to press against the end opening of the tube tail of the tube body; a first protruding edge is horizontally arranged along a lower edge of each pressing portion;
step 2: fusing two sides of the end opening of the tube tail of the tube body together with high pressure by the left mold and the right mold of the tail sealing machine; an overflow portion is formed at a tail portion of the tube tail by melted material of the tube body pushed towards the tail portion of the tube tail by the first protruding edges;
step 3: after cooling the tube tail, trimming the overflow portion at the tail portion of the tube tail with a cutter, thus completing a tail sealing process; wherein the cutter performs cutting at a position higher than an end of the tube body corresponding to the tube tail.