US 12,133,550 B2
Molding apparatus, cigarette filter rod and preparation method thereof
Qian Chen, Hunan (CN); Yong Jin, Hunan (CN); Ke Li, Hunan (CN); Shitai Wang, Hunan (CN); Chao Tan, Hunan (CN); Saibo Yu, Hunan (CN); Haifeng Tan, Hunan (CN); Hongmei Fan, Hunan (CN); and Qi Liu, Hunan (CN)
Assigned to CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD., Hunan (CN)
Appl. No. 17/413,524
Filed by CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD., Hunan (CN)
PCT Filed Dec. 14, 2018, PCT No. PCT/CN2018/121010
§ 371(c)(1), (2) Date Jun. 11, 2021,
PCT Pub. No. WO2020/118648, PCT Pub. Date Jun. 18, 2020.
Prior Publication US 2022/0022528 A1, Jan. 27, 2022
Int. Cl. A24D 3/02 (2006.01); A24D 3/04 (2006.01); A24D 3/08 (2006.01); B29C 48/00 (2019.01); B29C 48/06 (2019.01); B29C 48/32 (2019.01); B29C 48/395 (2019.01); B29C 48/56 (2019.01); B29C 48/80 (2019.01); B29C 48/88 (2019.01); B29C 48/885 (2019.01); B65G 33/14 (2006.01); B29K 29/00 (2006.01); B29K 511/10 (2006.01); B29L 31/00 (2006.01); B29L 31/14 (2006.01)
CPC A24D 3/0237 (2013.01) [A24D 3/048 (2013.01); A24D 3/08 (2013.01); B29C 48/0022 (2019.02); B29C 48/022 (2019.02); B29C 48/06 (2019.02); B29C 48/32 (2019.02); B29C 48/397 (2019.02); B29C 48/56 (2019.02); B29C 48/832 (2019.02); B29C 48/885 (2019.02); B29C 48/911 (2019.02); B65G 33/14 (2013.01); B29K 2029/04 (2013.01); B29K 2511/10 (2013.01); B29L 2031/14 (2013.01); B29L 2031/7416 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A molding apparatus, comprising a single-screw extrusion system and a cooling setting system, wherein:
the single-screw extrusion system comprises a feeder (1) and an extruder (2);
the feeder (1) is arranged on the extruder (2);
the extruder comprises a cylinder (11),
a heater (3) is arranged outside the cylinder,
a screw (4) is arranged inside the cylinder, and
a mouth mold (5) is arranged at one end of the cylinder and connected to the cooling setting system;
the cooling setting system comprises a round tube (7) and a cooler (6);
the cooler (6) is arranged outside the round tube (7);
one end of the round tube (7) is butted with the mouth mold (5) of the extruder (2); and
multiple groups of grooves (4-2) are formed on threads of a head of the screw (4), wherein the multiple groups of grooves (4-2) are proximal to the mouth mold (5).