Apparatus for perforating a web material
AssigneeThe Procter & Gamble Company
InventorCharles Allen Redd
Life of this patent
Estimating the term…
Abstract
Apparatuses are disclosed that include forming selected perforation designs and patterns. The perforation designs and patterns can be formed in linear or nonlinear fashion, can extend in the cross direction or the machine direction and can be formed to complement or match an embossed or printed design on the web. The perforation designs and patterns can be formed utilizing various mechanical perforating techniques.
Claims17
An apparatus for perforating a web formed of a fibrous material comprising a plurality of individual fibers to be converted into a through air dried perforated product in both a cross direction and a machine direction, the web having a Z-direction orthogonal to the machine and cross directions, the apparatus comprising:
- a discrete web perforator for forming individual perforations extending generally in the cross direction of the web;
- at least one additional web perforator for forming individual perforations extending generally in the machine direction of the web;
- the discrete web perforator and the at least one additional web perforator being positioned and configured to produce a selected perforation design wherein at least one of the perforations extending in the machine or cross directions comprises fiber deflections extending in the Z-direction of at least some of said plurality of individual fibers of the web
- to thereby produce the selected perforation design.
An apparatus for perforating a web formed of a fibrous material comprising a plurality of individual fibers to be converted into a through air dried perforated product in both a cross direction and a machine direction, the web having a Z-direction orthogonal to the machine and cross directions, the apparatus comprising:
- a discrete web perforator for forming individual perforations extending generally in the cross direction of the web;
- at least one additional web perforator for forming individual perforations extending generally in the machine direction of the web;
- the discrete web perforator and the at least one additional web perforator being positioned and configured to produce a selected perforation design wherein at least one of the perforations extending in the machine or cross directions comprises fiber deflections extending in the Z-direction of at least some of said plurality of individual fibers of the web;
- a means for removing a notch from each of opposite sides of the web at the ends of the individual perforations in the fibrous material extending generally in the cross direction
- to thereby produce the selected perforation design.
An apparatus for perforating a web formed of a fibrous material comprising a plurality of individual fibers to be converted into a through air dried perforated product in both a cross direction and a machine direction, the web having a Z-direction orthogonal to the machine and cross directions, the apparatus comprising:
- a discrete web perforator for forming individual perforations extending generally in the cross direction of the web;
- at least one additional web perforator for forming individual perforations extending generally in the machine direction of the web;
- the discrete web perforator and the at least one additional web perforator being positioned and configured to produce a selected perforation design wherein at least one of the perforations extending in the machine or cross directions comprises fiber deflections extending in the Z-direction of at least some of said plurality of individual fibers of the web;
- a device for embossing or printing an aesthetic pattern on the fibrous material of the web as the web is transported past the discrete web perforator and the at least one additional web perforator;
- and
- a controller causing the discrete web perforator and the at least one additional web perforator to thereby produce the selected perforation design.
Dependencies are inferred from the claim text.