Disposable cleaning sheets comprising a plurality of protrusions for removing debris from surfaces

Abstract

Disposable cleaning sheets for removing debris from a surface comprise a substrate and a plurality of protrusions affixed to the substrate. The cleaning sheets of the present invention have one or more of the following characteristics: (a) “Protrusion Flexibility” of at least about 0.5 grams, preferably from about 1 to about 200 grams, and more preferably from about 5 to about 70 grams; (b) “Glide Resistance” of less than about 1200 grams, preferably from about 25 to about 950 grams, and more preferably from about 200 to about 750 grams; (c) “Hair Capture Efficiency” of at least about 10%, preferably at least about 30%, and more preferably at least about 60%; and/or (d) “Sheet Capacity” of from about 0.2 to about 20 grams, preferably from about 0.5 to about 10 grams, and more preferably from about 0.75 to about 5 grams. When the present cleaning sheet is attached to a cleaning implement, the Attachment Force between the cleaning sheet and the cleaning implement will typically be at least about 600 grams, preferably at least about 1000 grams, and more preferably at least about 1400 grams. Methods of removing debris from a surface comprise contacting the surface with a cleaning sheet of the present invention.

1 . A disposable cleaning sheet comprising: 
 i) a substrate; and    ii) a plurality of protrusions affixed to said substrate;    wherein the attractive force between a hair and a single protrusion of said cleaning sheet is greater than the binding force between said hair and a surface comprising fibers;    wherein the force between said cleaning sheet and said surface is less than the force required to move said cleaning sheet across said surface;    wherein the force between said cleaning sheet and said surface is less than the binding force holding together said fibers of said surface; and    wherein said surface is selected form the group consisting of: carpet, rug, upholstery, fabric.    
   
   
       2 . The disposable cleaning sheet of  claim 1  wherein the peak load between a hair and said single hook or protrusion is greater than about 0.5 g as determined by the Protrusion Flexibility Test.  
   
   
       3 . The disposable cleaning sheet of  claim 2  wherein said peak load is from about 1.0 g to about 200 g.  
   
   
       4 . The disposable cleaning sheet of  claim 3  wherein said peak load is from about 5.0 g to about 80 g.  
   
   
       5 . The disposable cleaning sheet of  claim 1  wherein the peak load resistance to glide of said cleaning sheet across said surface is less than about 1200 g, as measured by the Glide Resistance Test.  
   
   
       6 . The disposable cleaning sheet of  claim 5  wherein said peak load resistance to glide is form about 25 g to about 950 g.  
   
   
       7 . The disposable cleaning sheet of  claim 6  wherein said peak load resistance is form about 200 g to about 750 g.  
   
   
       8 . The disposable cleaning sheet of  claim 1  wherein said disposable cleaning sheet is removably attachable to a cleaning implement.  
   
   
       9 . The disposable cleaning sheet of  claim 8  wherein the efficiency of hair capture for said disposable cleaning sheet from said surface is from about 30 to about 100% as measured by the Hair Capture Efficiency Test.  
   
   
       10 . The disposable cleaning sheet of  claim 9  wherein said efficiency of hair capture is from about 30 to about 100%  
   
   
       11 . The disposable cleaning sheet of  claim 10  wherein said efficiency of hair capture is from about 60 to about 100%  
   
   
       12 . The disposable cleaning sheet of  claim 9  wherein the total hair holding capacity of said sheet is from about 0.2 to about 20 grams as measured by the Sheet Capacity Test.  
   
   
       13 . The disposable cleaning sheet of  claim 12  wherein the total hair holding capacity is from about 0.5 to about 10 grams  
   
   
       14 . The disposable cleaning sheet of  claim 5  wherein the efficiency of hair capture for said disposable cleaning sheet from said surface is from about 10 to about 100% as measured by the Hair Capture Efficiency Test.  
   
   
       15 . The disposable cleaning sheet of  claim 14  wherein said peak load resistance is from about 25 g to about 950 g, and said efficiency of hair capture is from about 30 to about 100%  
   
   
       16 . The disposable cleaning sheet of  claim 14  wherein said peak load resistance is from about 200 g to about 750 g, and said efficiency of hair capture is form about 60 to about 100%  
   
   
       17 . The disposable cleaning sheet of  claim 1 , wherein, said protrusions are arrayed in a pattern on said substrate and said hook patterns covers at least about 5% to about 100% of said substrate surface and comprises form about 1 to about 1000 hooks per square cm, and wherein the balance of the substrate is substantially free of hooks or protrusions.  
   
   
       18 . The disposable cleaning sheet of  claim 1  wherein the hooks and protrusions have: 
 i) height of from about 0,05mm to about 80 mm    ii) stem width at ⅓ height of form about 0.002 mm to about 5 mm    iii) Vertical gap opening height of from about 5% to about 100% of said height (I)    
   
   
       19 . The disposable cleaning sheet of  claim 1  wherein said hook comprises a thermoplastic resin with a softening point between about 45 C to about 260 C  
   
   
       20 . The disposable cleaning sheet of  claim 19  wherein said resin has an elastic modulus of from about 0.0001 to about 0.15 kN/m2*  
   
   
       21 . The disposable cleaning sheet of  claim 1  wherein a pressure sensitive adhesive is applied to said substrate and said hooks.  
   
   
       22 . A cleaning implement for removing debris from a surface, said cleaning implement comprising: 
 iv) a handle and mophead comprising an attachment means; and    v) a disposable cleaning sheet removably attach to said attachment means of said mophead, said cleaning sheet comprising 
 a) a substrate;  
 b) and a plurality of protrusions, affixed to said substrate wherein the attachment force between said attachment means and said cleaning sheet is greater than the peak load resistance to glide between said cleaning sheet and said surface as said cleaning sheet is moved across said surface, as measured by the Glide Resistance Test.  
   
   
   
       23 . The cleaning implement of  claim 22 , wherein said attachment force is greater than 600 g.  
   
   
       24 . The cleaning implement of  claim 23 , wherein said attachment force is greater than 1000 g.  
   
   
       25 . The cleaning implement of  claim 24 , wherein said attachment force is greater than 1400 g  
   
   
       26 . The cleaning implement of  claim 22  wherein sid mophead further comprises a curved pad affixed to the bottom of said mophead with radius of curvature of less than 30 degrees, or affixed to the pad or directly to the bottom of the mophead, or combination therof; wherein said gliders create a gap between said pad and said surface of from about 0 cm to about 2.0 cm in a resting position  
   
   
       27 . The cleaning implement of  claim 26  wherein said cleaning sheet has a peak load resistance to glide form about 400 to about 1200 grams  
   
   
       28 . The cleaning implement of  claim 27  wherein said peak load resistance is from about 500 to about 900 grams, and said gap between gliders and pad is from about 0.1 to about 1.0 cm.