Mixing personnel, work requirements ① All kinds of raw materials must be listed, orderly, clearly marked, and neatly stacked. ② Operate strictly according to the mixing procedure and discharge temperature. It is strictly forbidden to violate the procedure of feeding and discharging at low temperature or over temperature

Due to the asymmetric structure of plastic profiles and low thermal conductivity, heating and cooling are difficult. , the corresponding internal stress will inevitably be generated. Its internal stress has a great influence on the strength of the profile. Although it is impossible to completely eliminate it, it is still possible to reduce the effect

1. Insufficient melt strength will lead to large cells in the foam sheet and long longitudinal section bubbles. Judgment method: go to the back of the three rollers and press the sheet wrapped on the middle roller with your fingers, the melt strength is good and you can feel the elasticity when pressing. If it is difficult to bounce after

The principle of hot mixing technology Mixing can be divided into hot mixing and cold mixing parts. Hot mixing is by no means as most people understand it, it is just a simple mixing and stirring process of materials. Hot mixing is that different components and dosage materials in the formula, driven by high-speed rotating

01 The role of cold mixing and hot mixing equipment The working principles of cold mixing and hot mixing are different. Hot mixing is generally not equipped with external heating, mainly relying on high-speed rotating blade pulp to drive the material to collide with each other, friction and shear with the barrel, and generate