In the noodle type pelletizer, after the polymer is extruded through the twin-screw extruder, the strip is prone to break before entering the water, so is there any other way to solve this problem besides the homogeneity of the mixing, the uniformity of pressure between the two ends of the head and the middle? The following describes some of the causes and their solutions.

Causes and solutions.
1. check whether there is a vacuum at the vacuum port, generally like nylon with fiber and other materials if there is no vacuum will break the strip

2. whether the temperature is set too high, resulting in the decomposition of plastic or processing aids (to do halogen-free flame-retardant PBT if the temperature is too high will appear halogen-free flame retardant degradation caused by fried strips appear)

3. look at the screw combination is not too strong shear caused by decomposition

4. set the extrusion process, screw speed is too fast feeding speed is slow, resulting in insufficient head pressure will also form a difficult to pull the strip

5. look at what material is done, is not water absorption or additives caused by water absorption material decomposition

6. in addition, can be set up on the pulling strip granulator break device

At present, the preparation of glass fiber reinforced plastic materials is the glass fiber directly from the twin-screw extruder glass fiber added to the mouth of the introduction of glass fiber by the twin-screw extruder mixing, filling to the molten plastic material to achieve the purpose of modification, enhancement. During the production process of twin-screw extruders, the phenomenon of broken strips will occur, requiring workers to constantly monitor whether the strips are broken, which is a waste of manpower.

The cooling water tank is arranged between the twin-screw extruder and the pelletizer, the direction of the mouth die of the twin-screw extruder faces the cooling water tank, and the sidewall of the cooling water tank is installed with multiple groups of pressure rollers, which are neatly arranged in multiple parallel heights to form a multi-layer structure. The rollers of the same layer are parallel to each other and of equal height, and the layers are parallel to each other. The twin-screw extruder is equipped with an infrared detector under the mouth die, which is connected to the alarm through a signal line. When a broken strip occurs during the production of the twin-screw extruder, the infrared detector automatically detects the broken strip, and the alarm is activated by the alarm; it is not necessary for workers to constantly monitor whether the strip is broken or not, and only a small number of workers are needed to effectively monitor the production of multiple production lines in one production plant, and there is no need to worry about large waste, thus effectively improving work efficiency, reducing the workload of workers and lowering production costs.