Agricultural film, also known as film plastic, including plastic film (also called agricultural film), the main component is polyethylene! In the production process of agricultural film, due to the relatively large output of each equipment, the raw material supply in the process of plastic extrusion if simply by manual weighing, mixed feeding this way is difficult to ensure the quality and efficiency of the work, especially with the rapid development of multi-layer co-extrusion technology, The raw material supply of plastic extrusion process has gradually evolved into an automatic central conveying system engineering integrating raw material drying, storage, transportation, weighing, mixing and extrusion control.
On the other hand, today’s plastic processing industry is facing increasingly serious competition and continuous market changes, how to ensure the quality of products and market competitiveness, in the production of a high degree of flexibility and automation is very necessary, and reduce the cost of products has become more and more important. Central feeding system technology is a new technology which has been developed rapidly to meet the increasing demand of people in plastic extrusion industry.
Since January 2010, the agricultural film industry has also included “equipment for material mixing” in its entry conditions, showing its importance. Compared with the traditional manual weighing and mixed feeding, the advantages of the central dosing and mixing system lie in:
1) High degree of automation, once the system is set, no operator is required;
2) Precise control of the proportion of each component of the extruder and excellent mixing effect;
3) can control the ratio of layer thickness of products very effectively;
4) No premix, no excess mixed raw materials when changing the product formula;
5) Accurate control of the thickness of each layer and the weight per meter of the total thickness can effectively reduce the consumption of raw materials, reducing raw materials by 2-5%.
6) Facilitate modern production management. The system can record the data of each operation for display, printing, storage and so on.
