Peeling, press rolls

Note: It is accepted that some fibers skin or peel more easily than others, but all fibers will skin under certain circumstances. The sheet formation and degree of consolidation by a dandy or lump breaker roll will affect peeling.
1. Check the grinding of press rolls for uniform smoothness.
2. Check the cleanliness of press rolls.
3. Changing the take-off angle from the top press roll can often alleviate peeling or stripping.
— the larger the take-off angle, the less the tension in the paper, but the greater the likelihood of peeling (though the less the likelihood of breaks).
4. Peeling or skinning can be reduced in certain cases by use of chemicals, such as polyphosphate, at the press and by maintaining the correct system pH.
5. Generally, a lower specific nip pressure will reduce peeling.
6. Peeling or skinning for a given furnish is related to the force of adhesion of the sheet to the roll surface
— a rougher surface offers better release.