Conical Twin Screw Barrel

Product Introduction:

According to the direction of rotation of the twin screw, the extruder can be divided into two kinds of extruder in the same direction and different direction. The same direction extruder is the same direction of rotation when the two screw runs, and the different direction extruder refers to the opposite direction of rotation when the two screw runs. According to the twin-screw axis parallel or not, can be divided into the axis line parallel and axis line intersect two kinds of extruder.

Conical twin screw barrel features:

1) Forced forward transport mechanism of plastic products, excellent mixing plasticizing ability and dehydration ability, with the applicability of raw materials and plastic products forming process.

2) The diameter of the small end of the conical twin screw is different from that of the big end. The diameter of the feeding section is large, and the diameter of the homogenizing section is small, and the middle is gradually transitioned.

3) The intersection Angle of the two axes of the conical twin screw is presented, and the size of the center distance is changed along the axis.

4) Conical twin screw (L/D) is the ratio of the reasonable length of the screw to the average diameter of the big end and the small end. The compression ratio of conical twin screw is not only formed by the screw groove from deep to shallow, at the same time, but also by the outside diameter of the screw from large to small, so the compression ratio is quite large, so the material is plasticized more fully in the barrel, more uniform, to ensure the quality of products. In this way, the speed of extruder can be improved and the production capacity of extruder can be improved under the premise of ensuring the quality.

5) Conical twin screw is meshing type, and most of them rotate in different direction. Two conical screws mesh with each other and rotate in different directions in the barrel, and there is a reasonable gap between the top of the screw and the root of the other screw. Due to the opposite rotation, a screw on the material spiral forward road is blocked by another screw, the material can only be driven by the thread through the various parts of the clearance shaft forward.

6) When the material through the radial gap between the two screws, like through the roll gap of two rollers, the mixing and shear is very strong, therefore, the plasticization of the material is very uniform, especially suitable for the processing of PVC plastic.

Our company specializes in the production of conical twin screw barrel has the advantages of forced extrusion, high quality, wide adaptability, long life, small shear rate, material is not easy to decompose, good plasticizing performance, powder direct molding and so on.

Conical twin screw barrel series:

sjs 35 (φ35/80-2), sjs 51 (φ51/105-2), sjs 55 (φ55/113-2), sjs 65 (φ65/132-2), sjs 80 (φ80/156-2), sjs 92 (φ92/188)

Screw steering: opposite to the outside

Screw speed: 1-40,1-32,1-36,1-32,1-32,1-32

Effective length of screw (effective length of screw generally refers to the length of the screw part) : 810mm, 1070mm, 1200mm, 1441mm, 1800mm, 2500mm.

Product advantages:

Ⅰ.It has the characteristics of uniform plasticizing mixing, high yield, stable quality, wide range of adaptation, long service life, direct molding of PVC powder, etc.

Ⅱ.With the corresponding molding head mold and auxiliary machine, can be a variety of thermoplastics, especially hard conical twin-screw extruder;

Ⅲ.The melt can be plasticized and extruded well at low temperature.

Scope of application:

Polyvinyl chloride powder; Directly extrusion into tube, plate, sheet, rod, film and profile and other plastic products; Used for modification of various plastics and powder granulation process.