Wipes having a substrate with a discontinuous pattern of a high internal phase inverse emulsion disposed thereon and process of making

• US 5,914,177 A
• Filed: 08/11/1997
• Issued: 06/22/1999
• Est. Priority Date: 08/11/1997
• Status: Expired due to Fees

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Cabell, David William, Barnholtz, Steven Lee, Smith, Charles Zell III
• Primary Examiner(s): EDWARDS, NEWTON O
• Application Number:
  US08/909,449
• Time in Patent Office: 680 Days
• Field of Search: 428/195, 428/211, 15/104.93
• US Class Current: 428/195.1
• CPC Class Codes: A45D 44/00 Other cosmetic or toiletry articles, e.g. for hairdressers' rooms
• CPC Class Codes: A61K 8/0208 Tissues; Wipes; Patches
• CPC Class Codes: A61K 8/06 Emulsions
• CPC Class Codes: A61Q 17/005 Antimicrobial preparations
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin
• CPC Class Codes: C11D 17/049 Cleaning or scouring pads; Wipes
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/24851 Intermediate layer is discontinuous or differential
• CPC Class Codes: Y10T 428/24934 including paper layer
• CPC Class Codes: Y10T 442/659 Including an additional nonwoven fabric

Abstract

A wipe comprising a high internal phase inverse emulsion disposed in a discontinuous pattern on a substrate. The pattern provides areas coated with the emulsion and areas free of the emulsion. Preferably the emulsion is disposed so that the surface area to volume ratio of the emulsion is minimized. The emulsion locally expresses water during use upon the application of pressure to the wipe. The water is useful for cleaning. The discontinuous pattern of the emulsion provides regions of the substrate which are wetted during use and regions which may remain dry. The wetted regions transfer water to the surface to be cleaned. The dry regions then remove the water from the surface for more efficacious cleaning.

Claims

1. A wipe comprising a substrate and a high internal phase inverse emulsion disposed thereon, said emulsion being disposed in a pattern comprising stripes whereby said substrate has first regions coated with said emulsion and second regions free of said emulsion, said emulsion having a surface area to volume ratio of less than 200 inches^-1.

2. A wipe according to claim 1 wherein said emulsion is disposed in a pattern comprising stripes.

3. A wipe according to claim 1 wherein said stripes are generally parallel.

4. A wipe according to claim 3 wherein said emulsion comprises stripes having a generally cylindrical shape.

5. A wipe according to claim 1 wherein said substrate comprises a first plurality of regions having a first basis weight and a second plurality of regions having a second basis weight, said first basis weight being greater than said second basis weight.

6. A wipe according to claim 5 wherein said substrate comprises a high basis weight essentially continuous network with discrete low basis weight regions distributed therein.

7. A wipe according to claim 6 wherein said emulsion is disposed on said substrate in a pattern comprising stripes, said stripes defining a first pitch, said low basis weight regions of said substrate defining a second pitch, said pitch of said low basis weight regions being less than said pitch of said stripes, whereby said stripes of said emulsion are coincident at least some of said low basis weight regions.

8. A wipe according to claim 5 wherein said substrate comprises a semicontinuous pattern of high basis weight regions separated by low basis weight regions.

9. A wipe according to claim 8 wherein said emulsion comprises stripes, said stripes being juxtaposed with said low basis weight regions of said substrate.

10. A wipe according to claim 5 wherein said substrate is cellulosic.

11. A wipe comprising a substrate and a high internal phase inverse emulsion disposed thereon, said wipe having a machine direction and a cross-machine direction orthogonal thereto, said substrate comprising a first plurality of regions having a relatively high basis weight and a second plurality of regions having a relatively low basis weight, said emulsion being disposed on said substrate in a discontinuous pattern of stripes, said stripes being generally parallel said machine direction and having a generally cylindrical shape, whereby said substrate has first regions coated with said emulsion and second regions free of said emulsion, and said emulsion is juxtaposed with said second plurality of regions having said relatively low basis weight.

12. A wipe according to claim 11 wherein said substrate comprises a through-air-dried tissue.

13. A wipe according to claim 11 wherein said emulsion comprises a pattern of discrete deposits on said substrate, said discrete deposits being juxtaposed to form said stripes.

14. A wipe according to claim 11 wherein said second plurality of regions comprises apertures.

15. A wipe comprising a substrate and a high internal phase inverse emulsion disposed thereon, said emulsion having a surface area to volume ratio of less than 200 inches^-1, said emulsion being disposed in a discontinuous pattern whereby, in use, said substrate has first regions which are wetted in use by release of a liquid from said emulsion and second regions which are dry in use.

16. A wipe according to claim 15 wherein said liquid comprises water.

17. A wipe according to claim 15 wherein said wet regions and said dry regions comprise a semi-continuous pattern of alternating stripes.

18. A wipe according to claim 16 wherein said substrate comprises a nonwoven.

19. A wipe comprising a substrate having two exposed surfaces, a first exposed surface and a second exposed surface opposed thereto, said wipe further comprising a high internal phase inverse emulsion disposed on one of said exposed surfaces, said substrate having a first basis weight, said emulsion having a coating weight, said coating weight being at least 50 percent of said basis weight, said emulsion having a surface area to volume ratio of less than 200 inches^-1.

20. A wipe according to claim 19 wherein said coating weight is at least 75 percent of said basis weight.