In the production process of extrusion blow molding machines, various problems are always encountered, such as insufficient blow molds. How can we solve some of the shortcomings?

Environmental protection device-blow molding waste gas treatmentThere are many production processes for products, including different processes such as suction molding, compression molding, extrusion, blow molding, injection molding, etc. When processing plastics, heating is required. When the tempe

(1) Control of the thickness and length of the parisonWhen the parison is extruded from the die of the machine head, expansion will occur, making the diameter and wall thickness of the parison larger than the gap between the die, and the parison hanging on the die will sag due to its own weight, cau

The extrusion blow molding machine is equipped with a chiller for cooling and cooling, we call it an extruder chiller. Since the extruder is mainly used for various extruded plastic products, such as PE, PP, PVC, ABS, etc., the high temperature generated during the production process will cause difficult demolding and slow molding, so a chiller is required to provide low-temperature cycle freezing Water (5-30°C) is fed to the extruder to shorten the cooling time and improve product quality.

Blow molding can be divided into two blow molding methods, hollow and film. Hollow blow molding can also be divided into extrusion blowing, injection blowing, extrusion stretch blowing, injection stretch blowing and other molding methods. Today, I will briefly introduce the key points of extrusion blow molding design. The extrusion blow mold is mainly composed of two half molds, which are generally composed of a mold body, a mold cavity, a clamping blank, a guide post, etc. The main requirements for the mold structure design are as follows,

During the blow molding process, control the molding from four points of inflation pressure, blowing speed, inflation ratio, and inflation mold temperature.The extrusion blow molding process includes plastic melting and plasticization, extruding the tube blank, inflating the tube blank, cooling, opening the mold, taking out the product, trimming, and checking. The control of product molding can be carried out from the following four aspects.