Melamine wipes and methods of manufacture

Patent metadata

Field	Value
Publication number	US-10480110-B2
Application number	US-201715728348-A
Country	US
Kind code	B2
Filing date	Oct 9, 2017
Priority date	Oct 9, 2017
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

Methods for manufacturing wipes including melamine entangled into a nonwoven, and associated articles of manufacture. Such a method may include providing a melamine sheet (e.g., contiguous, rather than discrete melamine particles), providing first and second nonwoven sheets, and positioning the melamine sheet between the first and second nonwoven sheets. The sandwich structure is hydro-entangled at high pressure to force the melamine material to become entangled into the nonwoven material, to a degree that a portion of the melamine is actually exposed on the exterior face(s) of the wipe, which are generally provided by the nonwoven sheets. Such a wipe exhibits the drapability of a wipe, with the scrubbing benefits (e.g., very effective cleaning of baseboards, crayon off walls, etc.) of melamine, with greater durability than existing melamine cleaning articles, which tend to quickly crumble during use.

First claim

The invention claimed is:

1. A method for manufacturing a wipe comprising melamine and nonwoven components the method comprising:
(a) providing a melamine sheet;
(b) providing first and second nonwoven sheets;
(c) positioning the melamine sheet between the first and second nonwoven sheets;
(d) hydro-entangling the melamine sheet and at least one of the nonwoven sheets such that the melamine and at least one of the nonwoven sheets are entangled together, such that a portion of the melamine is exposed on an exterior face of the wipe generally provided by the nonwoven sheets.

2. The method of claim 1 , wherein the first and second nonwoven sheets are spunbond.

3. The method of claim 1 , wherein the wipe has a thickness of less than 0.125 inch and is drapable.

4. The method of claim 3 , wherein the melamine sheet has an initial thickness as provided that is greater than a thickness of the finished wipe.

5. The method of claim 4 , wherein the melamine sheet has an initial thickness from 0.0625 inch to 0.5 inch, and the melamine sheet becomes compressed during the manufacturing method, wherein the thickness of the finished wipe is from 0.01 inch to 0.05 inch.

6. The method of claim 1 , wherein the hydro-entangling is performed at a pressure of at least about 100 bars.

7. The method of claim 6 , the method further comprising pre-wetting the melamine and the nonwoven prior to hydro-entangling, the pre-wetting being at a pressure insufficient to hydro-entangle the melamine into the nonwoven.

8. The method of claim 7 , wherein the pre-wetting is performed at a pressure of about 25 bars.

9. The method of claim 1 , wherein the melamine sheet is contiguous, such that the wipe is substantially void of separated particles of melamine.

10. The method of claim 1 , wherein the melamine sheet is hydro-entangled into both of the first and second nonwoven sheets, such that a portion of the melamine is exposed on both exterior faces of the wipe.

11. The method of claim 1 , the method further comprising drying the wipe after hydro-entangling.

12. The method of claim 1 , wherein the nonwoven sheets are provided as a roll, and the melamine is provided in the form of sheets or rolled sheets, wherein the nonwoven roll and the melamine sheets or rolled sheets are of substantially the same width.

13. The method of claim 1 , the method further comprising providing a tissue layer within the wipe.

14. A method for manufacturing a wipe comprising melamine and nonwoven components, the method comprising:
(a) providing a melamine sheet in which the melamine is provided as a contiguous sheet, rather than in the form of discrete melamine particles;
(b) providing first and second nonwoven sheets;
(c) positioning the melamine sheet between the first and second nonwoven sheets;
(d) hydro-entangling the melamine sheet into both of the nonwoven sheets such that the melamine is entangled through both of the nonwoven sheets, such that a portion of the melamine is exposed on both exterior faces of the wipe generally provided by the nonwoven sheets, wherein the hydro-entangling is performed at a pressure of at least about 150 bars.

15. The method of claim 14 , wherein the first and second nonwovensheets are spunbond.

16. The method of claim 14 , wherein the wipe has a thickness of less than 0.25 inch and is drapable.

17. The method of claim 14 , the method further comprising pre-wetting the melamine and the nonwoven prior to hydro-entangling, the pre-wetting being at a pressure insufficient to hydro-entangle the melamine into the nonwoven.

18. The method of claim 14 , the method further comprising drying the wipe after hydro-entangling.

Assignees

• Clorox Co

Inventors

• Dani Nikhil P

Classifications

• B32B5/245

  another layer next to it being a foam layer · CPC title

• A47L13/16

  Cloths; Pads; Sponges (metal scraping sponges A47L13/07) · CPC title

• D04H1/498 Primary

  entanglement of layered webs · CPC title

• D04H1/46

  by needling or like operations to cause entanglement of fibres (D04H1/45 takes precedence; needling machines D04H18/00) · CPC title

• D04H1/492 Primary

  by fluid jet (D04H1/49 takes precedence) · CPC title