Solution To The Problem of TPE Strands Breaking As Soon As They Are Extruded During Pelletizing

  

When TPE strands are cut into pellets, the problem of the extruder die head breaking as soon as it is pulled out can be located and solved from the following four aspects:

1. Adjust the plasticizing temperature

1. Lower the plasticizing temperature:

o If the plasticizing temperature is too high, the material will degrade or partially degrade, resulting in poor tensile properties and easy breaking. At this time, the plasticizing temperature can be appropriately lowered.

2. Increase the plasticizing temperature:

o If the temperature is too low, the material may not be fully plasticized, which will also affect its tensile properties. At this time, appropriately increase the plasticizing temperature to ensure that the material can be fully plasticized.

3. Uniform heating:

o Ensure uniform heating throughout the extrusion process to avoid uneven material properties caused by excessively high or low local temperatures.

2. Adjustment of oil filling amount

1. Appropriate oil filling:

o The amount of oil filling has a significant impact on the tensile properties of TPE. Too much oil filling may make the material too soft and the tensile strength decrease; too little oil filling may make the material too hard and the processing performance deteriorate. It is necessary to adjust the oil filling amount to an appropriate range according to the specific formula and process requirements.

2. Choose high-quality oil filling:

o Using high-quality oil filling with good compatibility with TPE will help improve the overall performance and stability of the material.

3. Filler adjustment

1. Reduce the amount of filler:

o Too much filler may reduce the tensile properties of TPE. You can appropriately reduce the amount of filler and observe whether the problem is improved.

2. Choose suitable fillers:

o Choose filler types and models that have good compatibility with TPE and little effect on tensile properties.

4. SEBS content adjustment

1. Increase the amount of glue:

o Increasing the amount of SEBS can improve the tensile strength and toughness of the material, thereby improving the fracture problem during strand cutting, but excessive SEBS will cause the material to be too hard or the processing performance to deteriorate.

2. Optimize the formula:

o Under the premise of ensuring the material performance, balance the impact of the glue content by optimizing other components in the formula (such as plasticizers, antioxidants, etc.).

NANJING HAISI is professional manufacturer of TPE pelletizing line, we supply Twin Screw Extruder, Single Screw Extruder, Plastic Recycling Extruder, Two Stage Extruder, Lab Scale Extruder, Mixing and Feeding Machine, Cooling and Pelletizing Machine, Crushing Machine and so on.