Liquid delivery pouch and article comprising the same

Abstract

A liquid delivery pouch comprises an outer liquid-impermeable wall and a liquid contained therein. The liquid-impermeable wall comprises at least one aperture having a diameter of from 200 μm to 500 μm. The at least one aperture is sealed by a sealing means to prevent the liquid to be released from said pouch prior to use.

1 . A pouch comprising an outer liquid-impermeable wall and a liquid contained within said pouch, said liquid-impermeable wall comprising at least one aperture having an average diameter of from about 200 μm to about 500 μm, said at least one aperture being sealed by a seal to prevent the liquid to be released from said pouch prior to use. 
   
   
       2 . A pouch according to  claim 1 , wherein said aperture has an average diameter of from about 250 μm to about 350 μm. 
   
   
       3 . A pouch according to  claim 1 , wherein said pouch comprises an internal flow restriction 
   
   
       4 . A pouch according to  claim 1 , wherein said pouch comprises at least 2 compartments separated from each other by a liquid-impermeable wall, each compartment having a liquid contained therein, and each compartment comprises at least one aperture sealed by said seal. 
   
   
       5 . A pouch according to  claim 4 , wherein said at least 2 compartments comprise a different liquid. 
   
   
       6 . A pouch according to  claim 4 , wherein said at least 2 compartments comprise a different number of apertures. 
   
   
       7 . A pouch according to  claim 1 , wherein said seal comprises a pull tab. 
   
   
       8 . An article comprising:
 a. a pouch according to  claim 7 ; and   b. a substrate joined to said pouch.   
   
   
       9 . An article according to  claim 8 , wherein said substrate is a woven substrate, a nonwoven substrate, a foam substrate, a sponge, or combinations thereof. 
   
   
       10 . An article according to  claim 8  wherein said pouch is attached to said substrate, and wherein said at least one sealed aperture is facing said substrate. 
   
   
       11 . An article according to  claim 8 , wherein said pull tab extends beyond the dimensions of said substrate. 
   
   
       12 . A method for the controlled release of a liquid, comprising the steps of:
 a. providing a pouch according to  claim 1 ; then   b. removing said seal to expose said at least one aperture; then   c. releasing said liquid from said pouch by means of gravity, pressure, or combinations thereof.   
   
   
       13 . A method according to  claim 12 , further comprising the step of attaching said pouch to a substrate such that said at least one aperture is facing said substrate, prior to removing said seal. 
   
   
       14 . A method according to  claim 12 , wherein said pouch is attached to a substrate such that said at least one aperture is facing said substrate. 
   
   
       15 . A method according to  claim 13 , wherein said substrate having said pouch attached thereto, is further attached to an implement or a device, prior to removing said seal.