US 12,133,550 B2Granted

Molding apparatus, cigarette filter rod and preparation method thereof

AssigneeChina Tobacco Hunan Industrial Co., Ltd.

InventorsQian Chen, Yong Jin, Ke Li, Shitai Wang, Chao Tan, Saibo Yu, Haifeng Tan, Hongmei Fan, Qi Liu

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Abstract

A molding apparatus, a cigarette filter rod and a preparation method thereof are disclosed. The molding apparatus comprises a single-screw extrusion system and a cooling setting system. The single-screw extrusion system comprises a feeder and an extruder. The feeder is arranged on the extruder. The extruder comprises a cylinder. A heater is arranged outside the cylinder. A screw is arranged inside the cylinder, and a mouth mold is arranged at one end of the cylinder. The cooling setting system comprises a round tube and a cooler. The cooler (6) is arranged outside the round tube. One end of the round tube is butted with the mouth mold of the extruder; and multiple groups of grooves are formed on threads of the head of the screw.

Claims20

Dependent claims

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).

8 more elements

Dependencies are inferred from the claim text.