The development of blow molding products

The development of blow molding products

With the continuous progress of science and technology and the scale of production, the degree of automation is getting higher and higher, and the production efficiency is also getting higher and higher. Among them, the important factors affecting the process of blow molding products are die blank, heating, pre-blowing, mold and environment, etc. Fully automatic mechanical blow molding products production greatly reduces the difficulty of process operation, increasing the stability of the process.

Blow moulded products in the most common blow moulded plastic bottle production for example, blow moulded bottles can be divided into two categories, one is a pressure bottle, such as filled with carbonated drinks bottle; The other is the non-pressure bottle, such as the bottle filled with water, tea, oil, etc. Blow molding products into the barrel of the human extruder, the rotating screw to heat, extrude, turn the raw material, plasticity into molten state; The molten material is extruded and pushed by the mold to extrude the product blank; Then the product molding mold clamps the closure, blows into the compressed air, the blown billet is closely attached to the mold cavity wall, after cooling, mold opening, the hollow product extrusion blow molding production is completed.

The classification of blow molding products: two types of industrial parts. The containers include: packaging containers, large volume storage tanks, and collapsible containers. But with the maturity of the blow molding process, more and more industrial parts of the blow molding products, the scope of application is increasingly wide.

Blow molding products with products consumption growth is mainly caused by the improvement of new processing technology, such as multi-layer billet extrusion, biaxial extrusion, non-axisymmetric blow molding, etc.. General blow molding products forming defects will appear product pitting, raw materials are not dry enough, mold temperature is too high or too low; Product deformation, heat preservation and pressure holding time is too short, partial mold overheating; Product wall thickness and weight is not easy to master, matching caliber adjustment.