Patent ID: 9555993
Date: 2017-01-31
CPC Classifications: B65H

Claim:
1. A winding apparatus configured for winding a web material, comprising a first and a second side and a free end onto an empty core and into a roll, said winding apparatus comprising a winding drum for guiding said web material by supporting said web material on the first side, and further comprising cutting means for cross cutting said web material prior to said web material being wound onto an empty core, said winding apparatus further comprises means for moving said empty core from a first position to a second position, said means comprising a set of retainer arms for carrying and moving said core from said first position to said second position near the periphery of said winding drum while web material is being wound onto said core, and for carrying at least one roller, said roller being arranged to lift said web material from said winding drum, during winding, prior to cross cutting said web material along said roller and thus creating said free end of web material, wherein said winding apparatus further comprises nozzle means for ejecting a gas onto the first side of said web material near said free end of said web material, wherein said nozzle means comprise a cross bar extending substantially in parallel with said winding drum, said cross bar comprising a number of nozzles which are distributed across the entire length of the cross bar, said nozzles being directed towards the first side of said web material, and wherein said cross bar is hollow and comprises at least two internal compartments for said gas, said compartments extending along the length of said cross bar and communicating with respective ones of said nozzles.