Double-layer PE large-scale hollow blow molding barrel and production process thereof

The invention discloses a double-layer PE large-scale hollow blow molding barrel and a production process thereof. The double-layer PE large-scale hollow blow molding barrel comprises a blow molding barrel body, the blowing barrel body comprises an outer coloring layer and an inner raw material natural color layer, the inner raw material natural color layer is located inside the outer coloring layer, the outer coloring layer and the inner raw material natural color layer form a double-layer type blank in a material storage die head, the outer coloring layer and the inner raw material natural color layer are connected in an extruding and hot melting mode in an extrusion die head to form a whole, and the outer coloring layer and the inner raw material natural color layer form an integral layer. According to the double-layer PE large-scale hollow blow molding barrel and the production process, a hollow blow molding mode is adopted, plastic molecules are stretched in two directions duringmolding, the orientation