- October 01, 2012, Timothy J. Walker
So we're back to basics, Folks! Can you name three advantages for using a nipped or gap-controlled roller ahead of winding? Here are the answers with concise explanations:
- Winding nip and gap rollers at winding will reduce lateral shifting of layer from air escape and winding roll diameter variations.
- Winding nip and gap rollers will reduce wrinkles from winding roll diameter variations.
- Winding gap rollers provide these first two benefits without the high footprint pressure that can damage some materials.
Winding gap rollers can reduce inter-layer slip in the top layer of a winding roller, discouraging the slip "knot" buckling defects.
Winding nip rollers will reduce entrained air, especially in low porosity product winding, and create a roll that changes less over time.
Winding nip rollers can press down on high diameter bands, creating a more cylindrical wound roll.