Recoiling Slitting Lines

Recoiling slitting lines

Top quality slitting lines feature very stiff slitter heads with no axial gaps, shafts perfectly parallel and minimum bending in rotation, which together with the correct definition of the slits back tensioning device, are able to supply high and even recoiling tension without marks or scratches on the surface or the edges. These are the necessary traits for a world class slitting line.

  • Top and bottom recoiling are possible to be carried out assisted by a Belt Wrapper.

  • When center line slitting is performed, the recoiling of tight coils are guaranteed by either friction or non-frictionTensioning Systems fitted onto a Tension Carriage like in Slitting Lines.

Roll slitting is a shearing operation that cuts a large roll of material into narrower rolls. There are two types of slitting: log slitting and rewind slitting. In log slitting the roll of material is treated as a whole (the 'log') and one or more slices are taken from it without an unrolling/recoiling process.

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In rewind slitting (recoiling) the web is unwound and run through the machine, passing through knives or lasers, before being rewound (recoiled) on one or more shafts to form narrower rolls. The multiple narrower strips of material may be known as mults (short for multiple) or pancakes if their diameter is much more than their width. For rewind slitting (recoiling) the machine used is called a slitter rewinder (recoiler), a slitter or a slitting machine – these names are used interchangeably for the same machines. For particularly narrow and thin products, the pancakes become unstable, and then the rewind (recoiling process) may be onto a bobbin-wound reel: the rewind (recoiling) bobbins are much wider than the slit width and the web oscillates across the reel as it is rewound (recoiled). Apart from the stability benefit it is also then possible to put very long lengths, (frequently many tens of kilometres), onto one bobbin.

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