Sustained release wipe

Abstract

A needlepunched nonwoven wipe containing a flowable product, activated by the addition of water, permits sustained release of the product.

We claim:  
     
         1 . A sustained release wipe comprising: 
 at least one layer of a needlepunched nonwoven material; and    a product contained in the at least one layer of the needlepunched nonwoven material.    
     
     
         2 . The sustained release wipe of  claim 1 , wherein the at least one layer of the needlepunched nonwoven material is substantially porous.  
     
     
         3 . The sustained release wipe of  claim 1 , wherein the at least one layer of the needlepunched nonwoven material has a base weight of about 50 to about 280 gsm.  
     
     
         4 . The sustained release wipe of  claim 1 , wherein the sustained release wipe is in the form of a mitt.  
     
     
         5 . The sustained release wipe of  claim 1 , wherein the at least one layer of the needlepunched nonwoven material has a dry MD and CD tensile strength of greater than about 20, a dry MD and CD elongation of greater than about 75%, a base weight of about 112 gsm to about 138 gsm, and a thickness of about two mm.  
     
     
         6 . The sustained release wipe of  claim 1 , wherein the product comprises a flowable product.  
     
     
         7 . The sustained release wipe of  claim 1 , wherein the product is contained in an amount from about 13 to about 17 gsm.  
     
     
         8 . A sustained release wipe mitt comprising: 
 at least one layer of a needlepunched nonwoven material containing a product; whereby the at least one layer of the needlepunched nonwoven material is formed into a mitt for receiving a user's hand, the mitt having an interior surface contacting the user's hand and an exterior useful surface for contacting the target surface.    
     
     
         9 . The sustained release wipe mitt of  claim 8 , further comprising: 
 at least one layer of a substantially moisture impermeable film covering at least a portion of the interior surface of the mitt to separate the user's hand from the product in the at least one layer of the needlepunched nonwoven material.    
     
     
         10 . The sustained release wipe mitt of  claim 9  wherein the at least one layer of a substantially moisture impermeable comprises a plastic film.  
     
     
         11 . The sustained release wipe mitt of  claim 10  wherein the thickness of the plastic film is about 0.01 mm to about 0.10 mm.  
     
     
         12 . The sustained release wipe mitt of  claim 8 , wherein at least a portion of the exterior surface of the mitt is covered with at least one layer of one or more substrate materials.  
     
     
         13 . The sustained release wipe mitt of  claim 12 , wherein the at least one layer of the one or more substrate materials comprises a nonwoven fabric or web.  
     
     
         14 . The sustained release wipe mitt of  claim 13 , wherein the nonwoven fabric or web comprises VICOTEX® 
     
     
         15 . The sustained release wipe mitt of  claim 14 , wherein a bottom side of the mitt is at least partially covered with VICOTEX®.  
     
     
         16 . The sustained release wipe of  claim 8 , wherein the at least one layer of the needlepunched nonwoven material is substantially porous.  
     
     
         17 . The sustained release wipe of  claim 8 , wherein the at least one layer of the needlepunched nonwoven material has a base weight of about 50 to about 280 gsm.  
     
     
         18 . The sustained release wipe of  claim 8 , wherein the at least one layer of the needlepunched nonwoven material has a dry MD and CD tensile strength of greater than about 20, a dry MD and CD elongation of greater than about 75%, a base weight of about 112 gsm to about 138 gsm, and a thickness of about two mm.  
     
     
         19 . A method of treating a target surface with a sustained release wipe, comprising: 
 providing a sustained release wipe containing a product;    wetting the sustained release wipe to activate the product;    wiping the target surface with the sustained release wipe to apply the product to the target surface;    rinsing the sustained release wipe to activate more product; and    repeating the wetting, wiping and rinsing steps until treatment of the target surface has been completed.    
     
     
         20 . The method of  19 , wherein at least a portion of the product is released each time the wetting step is repeated.