The invention specifically relates to a production process of stone-plastic flooring and a die head for manufacturing flooring base materials, belonging to the technical field of extrusion molding dies and plastic flooring production. The stone-plastic flooring comprises a wear-resistant layer, a glass fiber layer and a base material. The base material is formulated from 80 parts of PVC, 210 parts of calcium powder, 8.3 parts of calcium-zinc stabilizer, 4.8 parts of chlorinated polyethylene, 2.3 parts of acrylate and 1.6 parts of polyethylene wax. The die head for flooring base material production consists of an upper die and a lower die, with a feed inlet at one end and a forming outlet at the other end. The upper die is equipped with movable nozzles. The upper and lower dies close to form an extrusion flow channel, and the movable nozzles cooperate with the lower die to form a forming cavity. The extrusion flow channel includes a preheating section and an extrusion section extending toward both sides of the cavity. The forming cavity is provided with a water-drop-shaped foaming cavity and a buffer cavity, with the foaming cavity arranged close to the forming outlet. The die head improves the output and quality of flooring base materials, enabling the stone-plastic flooring to meet waterproof and environmental protection standards.
Area Code: CN
Application Number: CN201711473661.6
