Dryer felt marks

1. If sheet is too wet going into dryers, check press loading and condition of wet felts.
2. If felt seam is made with rivets, the rivet heads may be protruding.
— stop dryers and check seam.
3. If due to loose threads on felt, run dryers slow and inspect each felt.
4. Reduce the felt tension.
5. Check that felt seam is flat and covers the clippers.
— make sure seam is not worn-out or filled up.
6. For an old or defective dryer felt, rectify or change felt.
7. Scrape the dryer cylinders and keep clean.
See Build-up on dryers.