A Brief Talk On The Causes Of Waste Products in The Coating Of Woven Bags

Preparations before the production of color printing woven bags: select high-quality raw materials, weigh them well when selecting, and then process the raw materials. Add the recycled material particles into the drying mixer for mixing. The mixing temperature of the recycled material particles is controlled at about 80 ℃. When the new materials are added into the drying mixer and the mixing temperature is 500 ℃, add the filler masterbatch to continue mixing and processing into powder, Add proper color when processing. If it is recycled material, paraffin should be added in it. From the above, we can see that the preparation work of the woven bag manufacturer is to deal with the raw materials, and we can imagine the importance of the raw materials.

The nearby woven bag factory, woven bag manufacturer and Zhengzhou woven bag factory introduced the reason for waste products during film coating: the car was returned, the cloth was received, the film was received and the color film was not correct. The tension controller fails, the film edge sticks to the roller, the film edge breaks, and the film is split. In addition, the two ends of the finished product reeling are exposed due to process reasons. Or peeling or missing coating. Or the product specification is changed, the waste silk on the surface of the round woven cloth breaks the film, and the color film breaks the joint in the middle. The ink lines on the printing film will cause waste products. Next, I will introduce it to you in detail.

To reduce defective products and waste products, first of all, every detail in the operation should be done in place. The painting speed is usually fast. If you don't pay attention to the fake fruit, there will be a lot of waste products. Therefore, if you want to reduce defective products and waste products, you must first understand the main causes of defective products and waste products.

1. Subjective reasons: sense of responsibility, enthusiasm and mental state determine the yield;

2. Objective cause: The first shift of coating has been completed. When you have adjusted the film edge and finished running the lead fabric and connecting the new fabric, start coating. At this time, the barrel temperature, screw speed, extrusion pressure and cooling roll surface temperature have not yet reached full balance and stability. With the gradual increase of vehicle speed, the extrusion amount is also changing. A small part of the core of the first roll of the film must not be firmly coated. Secondly, due to the change of film material, specification, coating ratio, climate change, etc. In the process of regulating temperature parameters, the coating quality will also fluctuate. Round woven lotus leaf cloth, old cloth stored for a long time, and the surface tightness of the base material are different, and the flatness is too poor, which also affects the coating quality to a large extent, resulting in defective products.