What is the injection pressure of the PE foam molding machine

The injection pressure of PE foam molding machine varies depending on the equipment model, production process, and raw material characteristics. The following is a summary of the injection pressure of the PE foam molding machine based on the information in the reference article:
Conventional PE injection process:
In the conventional PE injection process, due to the good fluidity of PE, except for thin-walled and slender products, lower injection pressure should be selected as much as possible.
The general injection pressure range is between 50 and 100 MPa.
Low foaming injection molding:
For low foaming injection molding, it is necessary to maintain a small injection pressure during the injection process, generally between 5 and 10 MPa.
This requires selecting a model with a wide range of injection pressure adjustment when selecting an injection machine, and adjusting the pressure during the injection process.
Foam injection molding:
The pressure of foam injection molding should be determined based on the specific foam material and mold parameters.
It is generally recommended to control it between 1000-1500bar, but this is only a rough reference range.
The specific pressure value also needs to be determined based on factors such as the physical properties of the foaming material, mold structure and size, machine equipment and operational requirements.
Selection of injection pressure:
The selection of injection pressure is related to plastic properties, plasticization method, plasticization temperature, mold temperature, flow resistance, plastic shape, and plastic precision.
Excessive injection pressure may lead to mold damage, poor quality, and numerous defects; However, too low pressure may cause the molten material to be difficult to fill the mold cavity and even unable to form.
In summary, there is no fixed standard value for the injection pressure of PE foam molding machines, but it needs to be determined based on specific production processes, equipment models, and raw material characteristics. In practical operation, it is recommended to refer to the technical specifications and operation manual of the equipment or consult the equipment supplier to obtain accurate injection pressure values. At the same time, adjustments and controls need to be made according to the actual situation during the operation process to ensure the stability and excellence of product quality.