« Wal-Mart's plan to "go green" | Main | For those who can't wait »
December 15, 2006
Winding Conditions for Paper vs. Plastic Cores
Question:
When web (PET) is wound after slitting, the winding tension should be changed in case of paper core and plastic core?
When winding PET on a paper core you may need a high starting tension than for the plastic core. It depends on what defects you are seeing. A plastic core is usually stiffer than a paper core and will usually create higher pressure near the core for the same winding conditions. A paper core may show more spoking or starring defects. A plastic core may show more core impression or blocking defects.
Posted by Tim Walker at December 15, 2006 11:38 AM
