Board foam core indentation

Board foam core indentation

During the production process of XPS, EPS, and PET extruded boards, indentation in the core of the boards is a common issue we encounter. For this, we have provided corresponding solutions for different causes.

1. Melt temperature is too low: Increase the material temperature, increase the temperature of the main machine No. 2 (single screw).

2. The mold structure is not suitable for producing sheets of this thickness: Replace the mold and choose a more suitable flow channel.

3. Low mold temperature: Increase the mold temperature by units of 3°C to 5°C, incrementally.