Method of making a cleaning article having cutouts

Patent metadata

Field	Value
Publication number	US-2019076886-A1
Application number	US-201816127260-A
Country	US
Kind code	A1
Filing date	Sep 11, 2018
Priority date	Sep 11, 2017
Publication date	Mar 14, 2019
Grant date	—

Abstract

A method of making a cleaning article. The cleaning article has discrete tufts of tow fibers. The discrete tufts are unequally spaced from adjacent tufts, to provide improved collection and retention of debris from a target surface. The cleaning article may be made by cutting out spaces between tufts from a precursor sheet. Optionally the precursor sheet may be attached to a carrier sheet.

First claim

What is claimed is:

1 . A method of making a cleaning article, said method comprising the steps of:
providing a precursor sheet having tow fibers disposed thereon, bonding said tow fibers to said precursor sheet, slitting said tow fibers to provide discrete tufts, and cutting out spaces in said precursor sheet and said tufts, to remove a plurality of tufts and portions of said precursor sheet therefrom whereby at least some of said tufts remaining on said precursor sheet are unequally spaced from adjacent said tufts on said precursor sheet.

2 . A method according to claim 1 further comprising the steps of providing a carrier sheet and bonding said prescursor sheet to said carrier sheet to provide a laminate with said tufts extending outwardly therefrom.

3 . A method according to claim 1 further comprising the steps of providing a carrier sheet and adhesively bonding said prescursor sheet to said carrier sheet to provide a laminate with said tufts extending outwardly therefrom.

4 . A method according to claim 1 further comprising the steps of providing a carrier sheet having adhesive coated on one side thereof, and adhesively bonding said prescursor sheet to said carrier sheet to provide a laminate with said tufts extending outwardly therefrom.

5 . A method according to claim 1 further comprising the steps of providing a carrier sheet having adhesive coated throughout one side thereof, and adhesively bonding said prescursor sheet to said carrier sheet to provide a laminate with said tufts extending outwardly therefrom, whereby adhesive is exposed in said spaces between said tufts.

6 . A method of making a cleaning article having a longitudinal axis and a transverse axis perpendicular thereto, said method comprising the steps of:
providing a precursor sheet having opposed longitudinal edges and tufts of tow fibers disposed on and extending outwardly from said precursor sheet, and cutting out spaces in said precursor sheet, to remove a plurality of tufts and portions of said precursor sheet therefrom, whereby at least some of said tufts remaining on said precursor sheet are unequally spaced from adjacent tufts on said precursor sheet to form a cleaning article for cleaning a target surface with said tufts.

7 . A method according to claim 6 wherein said spaces are cut from and intercept said longitudinal edges of said precursor sheet.

8 . A method according to claim 6 wherein said spaces are cut from and intercept said longitudinal edges of said precursor sheet to provide rows of tufts therebetween.

9 . A method according to claim 6 wherein said spaces are cut from and intercept said longitudinal edges of said precursor sheet to provide rows of tufts therebetween, said spaces being cut between said tufts to not intercept a tuft at a cut line.

10 . A method according to claim 6 wherein said spaces are cut from and intercept said longitudinal edges of said precursor sheet to taper from said longitudinal edges to become narrower as said longitudinal axis is approached.

11 . A method according to claim 6 further comprising the steps of providing a carrier sheet and bonding said prescursor sheet to said carrier sheet to provide a laminate with said tufts extending outwardly therefrom.

12 . A method according to claim 6 further comprising the steps of providing a carrier sheet and adhesively bonding said prescursor sheet to said carrier sheet to provide a laminate with said tufts extending outwardly therefrom and adhesive disposed in said spaces between said tufts.

13 . A method according to claim 6 wherein said spaces are cut from and intercept said longitudinal edges of said precursor sheet to provide rows of tufts therebetween, said spaces being cut between said tufts to not intercept a tuft at a cut line.

14 . A method according to claim 6 wherein said spaces are cut from and intercept said longitudinal edges of said precursor sheet to provide rows of tufts therebetween, each said space intercepting only one said longitudinal edge, whereby a plurality of tufts are disposed on said longitudinal axis.

15 . A method of making a cleaning article having a longitudinal axis and a transverse axis perpendicular thereto, said method comprising the steps of:
providing a precursor sheet having opposed longitudinal edges and tufts of tow fibers disposed on and extending outwardly from said precursor sheet, and cutting out spaces in said precursor sheet and said tufts, to remove a plurality of tufts and portions of said precursor sheet therefrom, whereby at least some of said tufts remaining on said precursor sheet are disposed in rows and have a tuft density, whereby said tuft density increases as said longitudinal axis is approached, to form a cleaning article for cleaning a target surface with said tufts.

16 . A method according to claim 15 wherein said spaces and said rows are parallel.

17 . A method according to claim 15 wherein said spaces are cut in parallel rows forming a herringbone pattern and intercept a plurality of said tufts.

18 . A method according to claim 15 further comprising the steps of providing a carrier sheet and bonding said prescursor sheet to said carrier sheet to provide a laminate with said tufts extending outwardly therefrom.

19 . A method according to claim 15 wherein each said space intercepts only one said longitudinal edge and are cut in parallel rows generally perpendicular to said longitudinal axis to have tufts disposed thereon, and further comprising the steps of providing a carrier sheet and bonding said prescursor sheet to said carrier sheet to provide a laminate with said tufts extending outwardly therefrom.

20 . A method according to claim 15 further comprising the steps of providing a carrier sheet and bonding said prescursor sheet to said carrier sheet to provide a laminate with said tufts extending outwardly therefrom to provide spaces which taper to become narrower as said longitudinal axis is approached.

Assignees

• Procter & Gamble

Inventors

• Policicchio Nicola John

Classifications

• B32B38/10

  Removing layers, or parts of layers, mechanically or chemically · CPC title

• A47L13/38

  Other dusting implements {(using adhesive surfaces A47L25/005)} · CPC title

• B32B37/12

  characterised by using adhesives · CPC title

• D05C17/026

  characterised by the tufted pile surface · CPC title

• B32B2305/22

  Fibres of short length · CPC title