The present invention discloses a large double-layer PE hollow blow-molded barrel and a production process thereof, comprising a blow-molded barrel body. The blow-molded barrel body comprises an outer colored layer and an inner natural material layer, the inner natural material layer is located inside the outer colored layer, the outer colored layer and the inner natural material layer form a double-layer parison in a storage die head, the outer colored layer and the inner natural material layer are connected into a whole by extrusion hot melting in the extrusion die head, and the outer colored layer and the inner natural material layer form an integral layer. In the present invention, by adopting the hollow blow molding method, plastic molecules are biaxially stretched during molding with sufficient orientation, so that the product performance is greatly improved on the basis of injection molding, the durability of the product is improved, and the use cost of users is reduced. By adopting a symmetrical one-out-two design for the product molding mold, and adopting large-air-volume double-needle side blowing, and using top blowing and bottom blowing to assist molding in the process, the production efficiency is doubled compared with a single-cavity mold while ensuring product performance.
Country Code: CN
Application Number: CN201910700588.4
