Category: Blog

Today we will discuss the issue of blow molding chairs and injection molding chairs. The blow-molded chair uses the principle of gas pressure to inflate the hot blank tire stored in the mold into a chair-shaped product. Extrusion blow molding is to use the extrusion method to first make the plastic into a bottomed parison, and then move the parison to a blow mold to blow into a hollow product. Except for the injection machine and extruder, the blow molding…

The screw speed directly affects the output of the plastic blow molding machine and the quality of the product. The value of the screw rotation speed depends on the size and shape of the screw and the extruded product, and the type of the raw material. Increasing the speed of the screw can significantly increase the output of the blow molding machine. But the power consumption is also increased accordingly. From the standpoint of increasing production, it is advantageous to use…

The process performance of PE hollow molding is the focus of this post. PE has good molding and processing properties and is a commonly used plastic material for hollow molding. Its main process performance is as follows. ① Hygroscopicity The moisture absorption of PE is extremely small, generally not exceeding 0.01%. Therefore, there is no need for drying in the molding process. ②Molecular chain PE molecular chain has good flexibility, low melt viscosity, and good fluidity. The melt viscosity of…

Today, Yankang Plastic Machinery will share with you 3 ways to clean the head of the blow molding machine. It turns out that the 3 ways are very effective. It is well known that regular maintenance of the blow molding machine (the blow molding machine should be cleaned regularly, especially the screw and head of the extruder) and cleaning of the machinery, raw materials, and workshop are helpful to ensure that the blow molding is carried out normally. So, how to clean…

Today, Yankang Plastic Machinery will share with you is the influence of the production environment on the electrical system. Although the PLC-based electrical automatic control system is not particularly strict with the environment, in many hot and humid climates, the environment of many blow molding factories may not be suitable or the electrical automation system is not suitable for the working environment. The temperature at the production site of the blow molding equipment may reach 50-60 degrees, while the temperature…

What Yankang Plastic Machinery going to share with you today is 8 points for attention during mold testing of the blow molding machine. It is necessary to do the mold testing before the new mold is blow-molded or when other molds are replaced on the machine. The test result will directly influence the follow-up production of the factory. Therefore, reasonable operation steps must be followed and useful technical parameters should be recorded in the process of mold testing to facilitate the mass production…

Polyethylene for hollow blow molding is the topic in this post. (1) Polyethylene type for hollow blow molding The types of polyethylene used for hollow molding include low-density polyethylene (LDPE), high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), high molecular weight polyethylene (HMWHDPE), etc. (2) Selection of polyethylene for hollow blow molding In the hollow molding process, the selection of polyethylene is mainly based on two indicators: density and melt flow rate (MFR). The industry generally uses density as a measure of molecular…

(1) Types of polyethylene There are many types of polyethylene, and there are many ways to classify them. ① According to the different polymerization pressure in the polymerization process, polyethylene is generally divided into high-pressure polyethylene, medium-pressure polyethylene, and low-pressure polyethylene. ② According to the different molecular weight of polyethylene, it can be divided into ordinary molecular weight polyethylene, high molecular weight polyethylene (HMWHDPE), ultra-high molecular weight polyethylene (UHMWPE), and low molecular weight polyethylene (LMWPE). ③ Also, metallocene polyethylene (mPE)…

What aspects should be paid attention to when hollow blow molding industrial products and structural products? In this post, you will find out. With the continuous development of blow molding technology, the application range of hollow blow molded products is becoming wider and wider. In addition to being used as packaging containers, hollow blow-molded products are also widely used in industries such as automobiles. As industrial products and structural products, most blow-molded products have complex shapes, large surface areas, clear…

Just like we said yesterday, the heating system of the accumulator dies head is divided into three parts. The first part is the temperature controller. The second part is the contactor and the third part is the heater. Contactor maintenance is very important. Yesterday, Yankang shared with you how to maintain the temperature controller. Today, Yankang Plastic Machinery will share with you about the contactor maintenance. The working condition of the heating system contactor and motor contactors has a little difference. Because of…