PVC drain pipe production equipment (production process) a:

Mixture: (1), raw material is the PVC stabilizers, plasticizers, antioxidant and other accessories, scale, technology has mixed with high-speed machines, materials and machinery from friction material temperature of heat setting process, then the cold mixing machine material reduced to 40-50 degrees; So you can join the extruder hopper.

Part (2), extrusion machine: this machine is equipped with quantitative loading equipment, make out in and add the shoes to match, to ensure that products stable extrusion. Due to the characteristics of the conical screw, charging period has larger diameter, the material of the heat transfer area and the shear velocity is large, is advantageous to the material plasticizing, metering section of the screw diameter is small, reduces the heat transfer area and the shear rate of melt, can make the melt extrusion under low temperature. Screw within the barrel rotates, the plasticizing PVC mixture into the nose, so as to achieve compaction, melting and mixing homogenization; And achieve the purpose of the exhaust, dehydration. Feeding device and the screw driving device adopts frequency control of motor speed, which can realize synchronous speed.

Identify the PVC

(1) look at the surface finish, and whiteness.

(2) with samples, is generally high calcium product easy to break, to conform to the requirements of your price is right, of course, it is ok.

(3) to take samples with stamped on the tube side and see if I can crack and break or after the elongation at break.