Uniquely perforated web product

• US 8,287,976 B2
• Filed: 06/21/2010
• Issued: 10/16/2012
• Est. Priority Date: 06/21/2010
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Hupp, Matthew Todd
• Primary Examiner(s): O'HERN, BRENT T
• Application Number:
  US12/819,286
• Publication Number:
  US 20110311748A1
• Time in Patent Office: 848 Days
• Field of Search: 428/43, 428/131, 428/98, 162/114, 424/51, 424/58
• US Class Current: 428/43
• CPC Class Codes: B32B 2262/0238 Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: B32B 2262/0253 Polyolefin fibres
• CPC Class Codes: B32B 2262/0261 Polyamide fibres
• CPC Class Codes: B32B 2262/0276 Polyester fibres
• CPC Class Codes: B32B 2262/04 Cellulosic plastic fibres, e.g. rayon
• CPC Class Codes: B32B 2262/062 Cellulose fibres, e.g. cotton
• CPC Class Codes: B32B 2262/067 Wood fibres
• CPC Class Codes: B32B 2262/101 Glass fibres
• CPC Class Codes: B32B 2307/546 Flexural strength; Flexion stiffness
• CPC Class Codes: B32B 2307/75 Printability
• CPC Class Codes: B32B 2432/00 Cleaning articles, e.g. mops or wipes
• CPC Class Codes: B32B 2555/00 Personal care
• CPC Class Codes: B32B 29/002 as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a layer of a particular substance B32B9/06; next to a bituminous or tarry layer B32B11/06; next to a water-setting substance layer B32B13/08; next to a metal layer B32B15/12; next to a glass layer B32B17/065; next to a layer formed of natural mineral fibres or particles B32B19/046; next to a wood layer B32B21/06; next to a cellulosic plastic layer B32B23/06; next to a natural or synthetic rubber layer B32B25/06; next to a synthetic resin layer B32B27/10
• CPC Class Codes: B32B 29/005 next to another layer of paper or cardboard layer
• CPC Class Codes: B32B 3/10 characterised by a discontinuous layer, i.e. formed of separate pieces of material
• CPC Class Codes: B32B 5/26 another layer next to it also being fibrous or filamentary relative arrangement of fibres or filaments of different layers B32B5/12
• CPC Class Codes: Y10T 428/15 Sheet, web, or layer weakened to permit separation through thickness
• CPC Class Codes: Y10T 428/24 Structurally defined web or sheet [e.g., overall dimension, etc.]
• CPC Class Codes: Y10T 428/24273 including aperture

Abstract

Web products are disclosed which 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.

Claims

1. A web product, comprising:

a web formed of paper or a like material having one or more plies and having a first side, a second side, a machine direction, a cross direction orthogonal and coplanar thereto, and a Z-direction orthogonal to both the machine and cross directions;

a plurality of repeating lines of weakness forming a plurality of separable individual sheets comprising a wound or rolled product, each of said plurality of repeating lines being spaced from each other in the machine direction, each of said repeating lines of weakness comprising a plurality of individual overstrained fibers extending in the Z-direction and substantially from the first to the second side of the web, each of the plurality of individual overstrained fibers being selectively located relative to an adjacent overstrained fiber of the plurality of individual perforations to collectively define a selected perforation design extending from said first side to said second side and having machine direction and cross direction components; and

,

wherein the web is formed of a material strong enough to form the wound or rolled product having the repeating lines of weakness but weak enough to separate a selected separable sheet from the remainder of the wound or rolled product by tearing along one of the repeating lines of weakness defining the separable sheet.

2. The product of claim 1 wherein the repeating lines of weakness are produced along the length of the web by passing the web between a rotatable ring roll and a rotatable pattern roll, the ring roll having at least one circumferential groove extending about an outer surface thereof and the pattern roll having circumferential protrusions extending from an outer surface thereof, the protrusions on the pattern roll in selected cooperative alignment with the at least one circumferential groove in the ring roll to permit the protrusions to penetrate the web to form the selected perforation design.

3. The product of claim 2 wherein each of the circumferential protrusions extending from the outer surface of the pattern roll penetrates the web by mating with the at least one circumferential groove extending about the outer surface of the ring roll.

4. The product of claim 2 wherein the circumferential protrusions along an axis of rotation for the pattern roll are each individually circumferentially positioned about the outer surface of the pattern roll to produce the selected perforation design.

5. The product of claim 1 wherein the individual lines of weakness are formed to extend generally in the cross direction of the web and also including a plurality of individual overstrained fibers extending generally in the machine direction of the web.

6. The product of claim 1 wherein the plurality of individual overstrained fibers extend in the Z-direction sufficiently to be visually perceptible.

7. The product of claim 1 wherein at least one of the repeating lines of weakness is shaped.

8. The product of claim 7 wherein every other one of the repeating lines of weakness is shaped.

9. The product of claim 7 wherein all of the repeating lines of weakness are shaped.

10. The product of claim 1 wherein the exposed end of the wound or rolled product is formed by making a shaped chop-off cut.

11. A web product, comprising:

a web formed of paper or a like material having one or more plies and having a first side, a second side, a machine direction, a cross direction orthogonal and coplanar thereto, and a Z-direction orthogonal to both the machine and cross directions;

a plurality of spaced apart and repeating lines of weakness each comprising a plurality of individual visually perceptible Z-direction overstrained fibers, each of said repeating lines of weakness comprising a plurality of individual overstrained fibers extending in the Z-direction and substantially from the first to the second side of the web, each of the plurality of individual overstrained fibers being selectively located relative to an adjacent overstrained fibers of the plurality of individual overstrained fibers to collectively define a selected perforation design extending from said first side to said second side and having machine direction and cross direction components;

wherein each of the plurality of spaced apart and repeating lines of weakness is selectively located relative to an adjacent line of weakness to define a plurality of separable sheets comprising a wound or rolled product;

wherein the web is formed of a material strong enough to form the wound or rolled product having the repeating lines of weakness but weak enough to separate a selected one of the sheets from the remainder of the wound or rolled product by tearing along one of the repeating lines of weakness defining the separable sheet; and

,

wherein the individual fiber deflections are selectively located so the repeating lines of weakness each comprise a visually perceptible perforation design having machine direction, cross direction, and Z-direction components.

12. The product of claim 11 wherein the repeating lines of weakness are produced along the length of the web by passing the web between a rotatable ring roll and a rotatable pattern roll, the ring roll having at least one circumferential groove extending about an outer surface thereof and the pattern roll having circumferential protrusions extending from an outer surface thereof, the protrusions on the pattern roll in selected cooperative alignment with the at least one circumferential groove in the ring roll to permit the protrusions to penetrate the web to form the nonlinear visually perceptible perforation design.

13. The product of claim 12 wherein each of the circumferential protrusions extending from the outer surface of the pattern roll penetrates the web by mating with the at least one circumferential groove extending about the outer surface of the ring roll.

14. The product of claim 12 wherein the circumferential protrusions along an axis of rotation for the pattern roll are each individually circumferentially positioned about the outer surface of the pattern roll to produce the nonlinear visually perceptible perforation design.

15. The product of claim 11 wherein the visually perceptible individual overstrained fibers are formed to extend generally in the cross direction of the web and also including a plurality of visually perceptible individual overstrained fibers extending generally in the machine direction of the web.

16. A web product comprising:

a web formed of paper or a like material having one or more plies and having a first side, a second side, a machine direction, a cross direction orthogonal and coplanar thereto, and a Z-direction orthogonal to both the machine and cross directions and a repeating aesthetic pattern embossed or printed thereon;

a plurality of spaced apart and repeating lines of weakness each comprising a plurality of individual overstrained fibers extending in the Z-direction and substantially from the first to the second side of the web, each of the plurality of individual overstrained fibers being selectively located relative to an adjacent overstrained fiber of the plurality of individual overstrained fibers to collectively define a selected perforation design extending from said first side to said second side and having machine direction and cross direction components

wherein each of the plurality of spaced apart and repeating lines of weakness being selectively located relative to an adjacent line of weakness to define a plurality of separable sheets comprising a wound or rolled product;

wherein the web is formed of a material strong enough to form the wound or rolled product having the repeating lines of weakness but weak enough to separate a selected one of the sheets from the remainder of the wound or rolled product by tearing along one of the repeating lines of weakness defining the sheet; and

,

wherein selected perforation design is coordinated with the repeating aesthetic pattern on each of the plurality of separable sheets.

17. The product of claim 16 wherein the repeating lines of weakness are produced along the length of the web by passing the web between a rotatable ring roll and a rotatable pattern roll, the ring roll having at least one circumferential groove extending about an outer surface thereof and the pattern roll having circumferential protrusions extending from an outer surface thereof, the protrusions on the pattern roll in selected cooperative alignment with the at least one circumferential groove in the ring roll to permit the protrusions to penetrate the web to form the selected perforation design.

18. The product of claim 17 wherein each of the circumferential protrusions extending from the outer surface of the pattern roll penetrates the web by mating with the at least one circumferential groove extending about the outer surface of the ring roll.

19. The product of claim 17 wherein the circumferential protrusions along an axis of rotation for the pattern roll are each individually circumferentially positioned about the outer surface of the pattern roll to produce the selected perforation design.

20. The product of claim 16 wherein the individual overstrained fibers are formed to extend generally in the cross direction of the web and also including a plurality of individual overstrained fibers extending generally in the machine direction of the web.