Why need PVC WPC SPC Crushing & Milling (Pulverizer) & Mixing System for PVC Extrusion?
In PVC extrusion—whether you are producing PVC pipes/profiles, WPC (Wood-Plastic Composite) decking, or SPC (Stone-Plastic Composite) flooring —the trio of Crushing, Milling (Pulverization), and Mixing forms the absolute backbone of the production line. Without this integrated system, it is practically impossible to achieve a high-quality finished product, control raw material costs, or run a stable extrusion process. Here is exactly why this system is completely indispensable: 1. The High Cost of Waste: The Role of Crushing & Milling (Pulverizing) Extrusion lines naturally generate scrap. This includes start-up waste, off-spec products, trimming edges (especially in SPC and WPC flooring), and defective runs. PVC is a highly recyclable material, but an extruder cannot swallow large, rigid chunks of scrap. The Crusher (The First Step): Heavy-duty shredders or crushers break down large, bulky scrap pieces (like rejected SPC tiles or long PVC pipes) into manageable, small flak...