The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2004
Filed:
Sep. 19, 2000
Gilles Petitjean, Arlon, BE;
Du Pont Teijin Films UK, Ltd., Cleveland, GB;
Abstract
The invention relates to a cutting assembly for use in thin and ultrathin web winding stations. It also relates to a method for cutting a web using this cutting assembly. According to the invention, the web ( ) is cut by a blade ( ) with a cutting edge transverse to the web transfer direction; the blade moves between a rearward position and a forward position; in the forward position, the cutting edge is substantially parallel to an axis of the roll ( ) receiving the web, and the blade is substantially tangent to a surface of the roll. For cutting the web, the blade is moved from its rearward position to its forward position, so that its speed at the time it engages with said web is at least substantially equal to the speed of the web. This ensures a clean and clear cut of the web. At the same time, it ensures that the leading edge of the web is smoothly and evenly placed on the roll, without any creasing nor folding of the web.