The PVC resin is converted into a molten state under heat and shear during processing. This melt flow behavior is usually explained by molecular structural parameters such as molecular mass, molecular mass distribution, and branched structure. With the deepening of research and the accumulation of p... read more
Modern rigid PVC profile processing uses a twin-screw extruder to directly extrude the mixed powder, and its plasticizing mixing capacity and output are greatly improved. However, the positive displacement conveying capacity of the twin-screw extruder is much greater than the mixing capacity of the ... read more
After the dry mix leaves the mixing system, it usually passes through a screening step before entering the storage system to screen out the coarse particles in the dry mix. The incorporation of these particles into the dry blend can affect the quality of the extruded product, such as the formation o... read more
System control is the key to ensure the long-term stability of pvc profile quality. It includes four items: “formulation quality, process quality, appearance quality, physical and chemical indicators”. The first two are the premise and basis of the latter two, and also the quality control and techni... read more
Mixing ingredients is an important part of the production of PVC profiles. The mixing process is not only the mechanical mixing between the components, but also the process of friction and collision between the components, and the materials are continuously heated and gradually gelled. Therefore, th... read more
