How to solve surface warping and bending during ABS sheet extrusion line?

The core reason for defects in ABS sheet extrusion line:

1. Excessive or uneven cooling rate: A large temperature difference between the upper and lower surfaces of the sheet prevents the release of internal stress.

2. Excessive tension in the traction machine: This causes excessive longitudinal stretching, leading to sheet shrinkage and warping.

ABS sheet extrusion line Solutions:

1. Precisely control the temperature of the three-roll calender using a mold temperature controller to ensure uniform cooling of the upper and lower surfaces of the sheet.

2. Reduce traction tension to avoid overstretching; install flattening rollers if necessary.