Within certain temperature range, the bending strength of wood and plastic composites reduces with the temperature power-up.

The front impact roller causes transverse plastic compression strain in the weld which is in the brittle temperature range, which counteracts the tensile strain which leads to hot cracking.

Thermal plastic and plastic is defined as a specific temperature range can be repeated heating and cooling to soften hardened plastic such as polyethylene, PTFE and so on.