How to choose a screen changer?

As a manufacturer engaged in the production of plastics, how to choose a screen changer suitable for your production line? If you have just entered the industry, you probably just follow the crowd. The screen changer is an auxiliary machine for the extrusion production line equipment. There is neither national standard nor industry standard. The product models of various manufacturers are also varied and the prices are uneven. If you want to choose a suitable screen changer, as a user, you must clearly know your needs. Please grasp the following points:

1. Consider the characteristics of your own raw materials, because each raw material has different melting points, melting points, corrosiveness, and fluidity, so the requirements for screen changers are naturally different.

2. Consider whether the raw materials you use are new or old. If it is old, what is the impurity ratio of the old material? What filter area does the equipment manufacturer recommend?

3. Consider the products you produce. Different products have different requirements for production continuity. The requirement for strand granulation is that the strips cannot be broken, and the pressure fluctuation of the screen change is small for cast film, etc. This should be determined according to the actual situation of your own production.

4. Consider whether the extruder you use is a single screw or a twin screw and the model of the extruder. Usually, the filter diameter is not less than the screw diameter.

5. Consider the output of the extruder in kilograms/hour. We cannot use a large one, which will waste money. If it is too small, the small horse will pull the big cart, which will not only reduce the life of the main machine, but also increase the frequency of changing the screen. It should be done in moderation.

6. Know how many MPa the maximum pressure of the material flow is. If this is ignored, the configured screen changer will easily leak or be unable to push or pull.

For users, the configuration of the screen changer is good if it is suitable. Don't pursue high appearance and full functions, but don't blindly pursue saving money. The configuration of the screen changer cannot be clearly expressed in one article, just like you can't learn to treat people through an article. It requires seeking truth from facts, specific analysis of specific problems, accumulation of professional knowledge and precipitation of practical experience.