




Rubber strip production line
Key words:
Rubber strip production line
Classification:
Rubber, rubber and plastic extrusion line

Business Hotline:
Rubber strip production line
Model number |
XJ-75 |
XJ-90 |
XJ-120 |
XJ-150 |
Screw diameter (mm) |
75 |
90 |
120 |
150 |
Length-diameter ratio |
20:1 |
20:1 |
20:1 |
20:1 |
Motor power (kw) |
30 |
55 |
110 |
132 |
Screw speed r/min |
30-65 |
30-60 |
30-50 |
30-50 |
Yield kg/h |
80-180 |
100-300 |
180-540 |
500-750 |
Working principle
Extrusion molding is a process in which the plastic material is continuously pressed out through a mouth shape to make it a product with a cross-section shape.
When the rubber material moves forward along the screw, due to the result of mechanical action and thermal action, the viscosity and plasticity of the rubber material have changed and become a viscous fluid. According to the change of the rubber material in the extrusion process, the working part of the screw is generally according to its function
The same is generally divided into feeding section, compression section and extrusion section three parts.
The features of the sections are as follows
1. Feeding section: also known as solid conveying section, this section from the feeding mouth to the melting of the rubber. After the rubber material enters the feeding port, under the action of the rotating screw, the relative motion is made between the screw groove and the inner wall of the barrel, and the uniform micelle is formed.
2. Compression section: also known as the plasticizing section, this section from the beginning of the rubber melt to the rubber to produce flow stop. The compression section receives the micelles from the feeding section, compacts and softeners them further, and discharges the air entrain in the rubber to the feeding section.
3. Press out section: also known as the metering section, the compression section to transport the glue to further pressure mixing, at this time, the thread groove has formed a completely flowing state of the glue. Due to the rotation of the screw to promote the rubber flow, and to the capacity and pressure can be uniform from the nozzle passage
Extrude.
Cold feed extrusion
Advantages: save heat refining equipment, easy to realize mechanization, automation, and because the main engine strengthens the shear and plasticization of the screw, so that the rubber material to obtain uniform temperature and plasticity; Improve the quality of extrusion products, increase the surface finish, extrusion half
The product has more stable and consistent size specifications; The sensitivity of cold feeding pressure is small. Wide application, flexibility; The investment and production cost of cold - feed extruder is lower.
At present, cold feeding extruder has gradually replaced hot feeding extruder in the extrusion of wire, cable, hose and other small specification products. The extrusion process of cold feeding is different from that of hot feeding. The temperature of each part should be adjusted to the specified value before heating. The common temperature of each part
As follows: screw <35℃; Feeding section 35~50℃; Plasticizing stage 40~60℃; Extrusion section 50~70℃; Nose and mouth 80~100℃. Cold feed extrusion is often used cold feed exhaust extruder, its characteristics are in the extrusion process to remove the gas in the rubber, increase
The density of the compound reduces the porosity of the compound and reduces the extrusion expansion rate of the compound.
Exhaust extruder extrusion
The screw of the extruder is composed of a feeding section, a metering section, an exhaust section and a second metering section.
The semi-finished products extruded by the exhaust extruder have fewer pores and dense products. The exhaust extruder is often combined with microwave or salt bath vulcanization equipment to form a continuous vulcanization line to produce extruded products such as wires, cables and seals.
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Shuangda

Hebei Shuangda Rubber Machinery Co., Ltd.
Tel:400-0319-386
Landline:+86-319-6017632
Email:shuangdaxiangsu@126.com
Official website:www.shuangdasuji.com
Addr:Liyuantun Industrial Zone, Weixian County, Xingtai City, Hebei Province
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