U-PVC管材挤出成型系统

1、ManufacturingRAW MATERIALThe key ingredient in the manufacturing of quality PVC-U pipes is the basic raw material-PVC resin. Suspension grade PVC is used in the compounds from which PVC-U pipes are made. Some of the important features of suspension grade PVC are:Excellent thermal stability - wh

2、ich ensures high output rates with better finished products.Uniformity - in terms of practice size and molecular weight distribution.Low Fish-eye and Dark Resin cont.Low VCM contentLow volatile content.PVC COMPOUN DSThe basic raw material is PVC. Other ingredients are stabilizers, lubricants, filler

3、s, pigments etc.EXTRUSIONPVC compound is extruded into PVC-U pipes using the latest sophisticated equipment. Automatic in-line machines complete the fully automatic process by cutting the pipe into standard lengths and stacking them to prevent warping.RIGID PVC FITTINGSThe process for the manufactur

4、e of rigid PVC fittings is similar to that for the manufacture of PVC pipes. The only difference is that after the PVC resin is compounded, the material is enjection moulded through modern automatic screw type injection moulding machines. It then flows into specially designed moulds, which have high

5、 locking pressures ranging in hundreds of tons,  and where specified temperatures are accurately attained. This is followed by a cooling process for a predetermined time after which the pipe fitting is ejected, and made ready for testing.Fittings are also manufactured by fabrication from PVC-U pipes. Ravindra fittings can be used with excessive l