Method and device for threading a paper web or an equivalent web-like material in a winding device, in particular in a slitter-winder

A method for threading a web into a winding device, comprising the steps of:

• unwinding the web from a reel;
• cutting and separating a threading wedge having a width narrower than the width of the web on the reel from the web while unwinding the web from the reel;
• guiding the threading wedge away from a plane in which a remaining part of the web is running to the winding device at substantially the same time as the threading wedge is cut and separated from the web, the step of guiding the threading wedge to the winding device comprising the steps of guiding the threading wedge through slitting blades and directing the threading wedge from the slitting blades into connection with a first carrier drum to be carried on a face thereof;
• separating the threading wedge from the first carrier drum when the threading wedge reaches the full width of the web;
• and thereafter
• directing the threading wedge having the full width of the web over a second carrier drum situated in advance of said first carrier drum.

A method for threading a web into a winding device, comprising the steps of:

• unwinding the web from a reel,
• cutting and separating a threading wedge having a width narrower than the width of the web on the reel from the web while unwinding the web from the reel, the step of cutting and separating the threading wedge from the web comprising the steps of cutting the threading wedge from a first edge of the web to include the first edge of the web and widening the threading wedge to a second edge of the web opposite to the first edge of the web after the threading wedge has proceeded a certain distance through the winding device,
• passing the threading wedge through the winding device at substantially the same time as the threading wedge is cut and separated from the web, and
• grasping the first edge of the web by means of a grasping device extending substantially over the entire length of the winding device.

A method for threading a web into a winding device, comprising the steps of:

• rotating a reel of the web,
• cutting a threading wedge having a width narrower than the width of the web on the face of the reel,
• separating the threading wedge from the web while unwinding the web from the reel by picking up an end of the threading wedge from the face of the web reel,
• passing the threading wedge through the winding device at substantially the same time as the threading wedge is cut and separated from the web, and
• increasing the width of the threading wedge to the full width of the web after the threading wedge has proceeded a certain distance through the winding device.