Systems and methods for cutting or perforating a web material
AssigneeCurt G. Joa, Inc.
InventorsJohn A. McCabe, Jeff Middlesworth, Darren Horness, Peter J. Jenquin, Gottfried J. Hohm, Daniel A. Peterson
Life of this patent
Estimating the term…
Abstract
Systems and methods utilizing stationary and/or moveable cutting components provide limited interference with web processing operations, such as pad spin and pitch alteration. Heat, laser, fluid, or mechanical cutting operations may be used, including respectively, a heated element (e.g., wire, ribbon, bar, or embossing or perforating element) that may be triggered inductively, water or steam jets, or improved knife/anvil cooperation.
Claims27
A system for processing a web of material, the system comprising:
- a traveling body carrying a web;
- a cutting loop and a trigger loop, said web of material disposed between said cutting loop and said trigger loop;
- said trigger loop inductively cooperating with said cutting loop in a web alteration zone to generate an electrical current in said cutting loop and heat said cutting loop;
- and
- said cutting loop contacting said web of material in said web alteration zone to alter said web of material from a first condition of said web to a second condition of said web.
A system for processing a web of material, the system comprising:
- a rotating body carrying a metallic element and carrying a web of material;
- an induction field;
- said rotating body rotated about an axis and said metallic element carried through said induction field at a web alteration zone;
- said induction field acting upon said metallic element;
- said metallic element contacting said web of material in said web alteration to alter said web of material from a first condition to a second condition;
- and
- said induction field comprising a trigger loop comprising at least one loop of conductive material coupled to a power supply.
A system for processing a web of material, the system comprising:
- a rotating body carrying a metallic element and carrying a web of material;
- an induction field;
- said rotating body rotated about an axis and said metallic element carried through said induction field at a web alteration zone;
- said induction field acting upon said metallic element;
- said metallic element contacting said web of material in said web alteration to alter said web of material from a first condition to a second condition;
- and
- said induction field of variable strength in relation to a rotational velocity of said rotating body.
Dependencies are inferred from the claim text.