2.5 Poor Lamination Quality

Problem: Straight wave lines across the output.

Cause: Excessive front roller pressure.

Measure: Loosen the front roller pressure.

Problem: Concave waves in the lamination.

Cause: Excessive rear (pulling) roller pressure.

Measure: Loosen the rear back roller pressure.

Problem: Angled waves on both sides of the output.

Cause: Insufficient rear roller pressure.

Measure: Tighten the rear roller pressure.

Problem: Angled waves on one side of the output.

Cause: Insufficient rear left (or right) side roller pressure.

Measure: Tighten the rear left (or right) side roller pressure.

Problem: Straight waves in the output.

Cause: Excessive heat at the nip rollers.

Measure: Lower the roller temperature.

Problem: Wake waves.

Cause: Insufficient heat at the nip rollers.

Measure: Raise the roller temperature.

11

13

Page 13
Image 13
Royal Sovereign RSL-380, RSL-2701U service manual Poor Lamination Quality