US 11,724,838 B2
Method for producing polymer tube containing liquid and being sealed at constant intervals and apparatus for producing polymer tube
Ryuichi Saguchi, Joetsu (JP); Tomoaki Kaji, Joetsu (JP); and Masahiko Naruse, Joetsu (JP)
Assigned to SHIN-ETSU CHEMICAL CO., LTD., Tokyo (JP)
Filed by SHIN-ETSU CHEMICAL CO., LTD., Tokyo (JP)
Filed on Aug. 4, 2020, as Appl. No. 16/984,285.
Application 16/984,285 is a division of application No. 15/941,309, filed on Mar. 30, 2018, granted, now 10,865,002.
Claims priority of application No. 2017-071473 (JP), filed on Mar. 31, 2017.
Prior Publication US 2020/0361643 A1, Nov. 19, 2020
Int. Cl. B65B 51/22 (2006.01); B65B 3/02 (2006.01); B65B 3/30 (2006.01); B65B 61/02 (2006.01); B29C 65/06 (2006.01); B29C 48/09 (2019.01); B29C 48/00 (2019.01); B65B 65/00 (2006.01); B65B 39/06 (2006.01); B65B 37/00 (2006.01); B65B 39/00 (2006.01); B65B 63/08 (2006.01); B65B 9/24 (2006.01); B65B 51/32 (2006.01); B29C 48/11 (2019.01); B65B 51/16 (2006.01); B29K 23/00 (2006.01); B29C 48/29 (2019.01); B29C 48/13 (2019.01); B29C 48/88 (2019.01); B29C 48/345 (2019.01); B29C 48/30 (2019.01)
CPC B65B 3/022 (2013.01) [B29C 48/00 (2019.02); B29C 48/0019 (2019.02); B29C 48/0021 (2019.02); B29C 48/09 (2019.02); B29C 48/11 (2019.02); B29C 65/0672 (2013.01); B65B 3/30 (2013.01); B65B 9/24 (2013.01); B65B 37/00 (2013.01); B65B 39/001 (2013.01); B65B 39/06 (2013.01); B65B 51/16 (2013.01); B65B 51/225 (2013.01); B65B 51/32 (2013.01); B65B 61/02 (2013.01); B65B 63/08 (2013.01); B65B 65/006 (2013.01); B29C 48/13 (2019.02); B29C 48/29 (2019.02); B29C 48/30 (2019.02); B29C 48/345 (2019.02); B29C 48/9115 (2019.02); B29K 2023/065 (2013.01); B65B 2220/24 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An apparatus for producing a polymer tube, containing a liquid therein and being sealed at constant intervals, the apparatus comprising:
a die configured for melt extrusion of a polymer material into at least one tube;
a mandrel configured to feed a liquid into the at least one tube during the melt extrusion to obtain at least one liquid-containing tube;
one or more rollers configured to take up the at least one liquid-containing tube; and
a pair of pressurizing members configured to discontinuously press the at least one liquid-containing tube between the pair of pressurizing members to cause pressure-bonding before the tube solidifies, wherein the pair of pressurizing m embers is a pair of rotary horns, each horn having a protrusion, and the pair of rotary horns is configured to discontinuously press the at least one liquid-containing tube between the protrusions to cause pressure-bonding.