HDPE is one of the commonly used production raw materials of blow molding machine, stable processing performance, good molding effect, low material cost, low carbon and environmental protection. But in the process of blow molding processing, in order to achieve a more ideal production state, it is necessary to understand some HDPE blow molding should pay attention to.
If HDPE is used, the temperature of the blow molding machine is generally set at 170-210 degrees. The specific temperature parameters of the equipment should be determined according to the specific products. The temperature of the blow molding small products is generally lower, and the large products should use higher temperature.
If the temperature is too low, the type embryos after HDPE processing will be broken. On the contrary, the temperature is too high, the type of embryo will fall, the production of products will have uneven wall thickness. Therefore, in order to ensure the quality of embryos and products, the temperature should be adjusted timely according to the quality of embryos in the process of blowing molding machine test
Extrusion speed and processing temperature are similar measures, not too fast, not too slow, and the speed and temperature to cooperate with each other.
How to cooperate? Like blowing molding machine in the use of HDPE production process, is not allowed to set too high speed and too low molding temperature, such parameter Settings, will cause quality problems, type embryo rupture, product quality is too large.
Mold temperature of blow molding machine
The mold is the place where HDPE final molding products, the mold temperature setting will directly affect the surface quality of products, appearance, quality of products, etc., in addition to the product has an impact on the molding efficiency of blowing machine is also a certain impact.
Mold temperature should be set according to the process of raw materials and products, but it is not fixed and should be adjusted in real time according to the actual production situation.
Air pressure of blow molding machine
HDPE blow molding pressure value range is generally 0.4-0.7MPA, of course, we can within a reasonable range, appropriate to improve the blow molding pressure, so that is conducive to blow molding products, can improve the cooling efficiency of products, improve the cooling effect, shorten the blow molding cycle, improve product quality.
HDPE blow molding products hardness
HDPE has the hardness value is able to meet the technical requirements of most blow molding products, however, there are some products used in special environments, the requirements for hardness may be higher. Therefore, it is necessary to take some other methods, such as mixing and adding some fillers, inorganic substances, etc. Specifically how to add, or what type of material to choose to add, you can refer to HDPE in the production and processing of blowing machine to add what can improve the hardness.
The above about HDPE blow molding should pay attention to, is according to HDPE as a blow molding machine production raw materials, and the use of HDPE blow molding processing, some problems, listed some common process parameters setting precautions, only to provide a reference, but also in order to avoid the use of problems, specific problems and use, Or according to the specific product type to determine.
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