Paper roll as fragrance control release system

Abstract

The present invention relates to a paper roll, which besides its normal function, has additionally a function as fragrance control release system. Further, the present invention relates to a method for manufacturing said paper roll, as well as to a household product or consumer product, for instance a toilet paper roll, comprising said paper roll.

1 . A suspension consisting of
 (a) Microcapsules, having a core material encapsulated within a microcapsule shell, said core material comprises at least one fragrance oil.   (b) A liquid medium, wherein said liquid medium comprises or consists of
 (b1) at least one surfactant, 
 (b2) at least one oil fragrance oil, 
 (b3) at least one deflocculant agent, and 
 (b4) water, and optionally 
 (b5) further auxiliaries and/or additives. 
   
     
     
         2 . A suspension according to  claim 1 , wherein the microcapsules (component (a)) are present in an amount of from about 10% wt. to about 25% wt., relative to the weight of the suspension. 
     
     
         3 . A suspension according to  claim 1 , wherein the at least one surfactant (component (b1)) is present in an amount of from about 0.5% wt. to about 1.5% wt., relative to the weight of the suspension. 
     
     
         4 . A suspension according to  claim 1 , wherein the at least one fragrance oil (component (b2)) is present in an amount of from about 60% wt. to about 70% wt., relative to the weight of the suspension. 
     
     
         5 . A suspension according to  claim 1 , wherein the at least one deflocculant agent (component (b3)) is present in an amount of from about 0.02% wt. to about 0.08% wt., relative to the weight of the suspension. 
     
     
         6 . A suspension according to  claim 1 , wherein the surfactant (component (b1)) comprises a non-ionic surfactant. 
     
     
         7 . A suspension according to  claim 1 , wherein the at least one deflocculant agent (component (b3)) is selected from the group consisting of humic acids and derivatives, alkaline lignosulfonates, tannin compounds, polyacrylates and acrylic derivatives, acrylate copolymers, cationic acrylamide copolymers polycarbonates, sodium citrate, polysaccharides, sodium and potassium carbonates, sodium and potassium hydroxides, sodium silicates, phosphates and polyphosphates, sodium and ammonium oxalates and mixtures thereof. 
     
     
         8 . A suspension according to  claim 1 , wherein said suspension is free of formaldehyde. 
     
     
         9 . A method for manufacturing the suspension according to  claim 1  comprising or consisting of the following steps:
 (a) providing an aqueous solution of the at least one deflocculant agent and optionally the at least one surfactant. 
 (b) providing a suspension of microcapsules in water. 
 (c) mixing the aqueous solution of step (a) and the suspension of step (b). 
 (d1) providing at least one fragrance oil 
 or 
 (d2) mixing the at least one surfactant, with at least one fragrance oil for a period from about 10 to about 20 minutes, wherein the mixture of step (c) is free of surfactant. 
 (e) combining the at least one fragrance oil of step (d1) or the mixture of step (d2) to the mixture of step (c) and stirring the obtained composition for a period from about 10 to about 30 minutes with a rotary speed in the range from about 400 to about 900 rpm. 
 
     
     
         10 . A paper roll comprising the suspension according to  claim 1 . 
     
     
         11 . A paper roll according to  claim 10 , wherein the inner side of the roll is impregnated by the suspension according to  claim 1 . 
     
     
         12 . A method for manufacturing a paper roll according to  claim 10  comprising or consisting of the following steps:
 (a) providing a suspension consisting of 
 (i) Microcapsules, having a core material encapsulated within a microcapsule shell, said core material comprises at least one fragrance oil. 
 (ii) A liquid medium, wherein said liquid medium comprises or consists of 
 (iia) at least one surfactant, 
 (iib) at least one oil fragrance oil, 
 (iic) at least one deflocculant agent, and 
 (iid) water, and optionally 
 (iie) further auxiliaries and/or additives; 
 (b) placing the suspension of step (a) onto a tank and subjecting said suspension to be homogenised; 
 (c) transferring the homogenized suspension to a pressure vessel, wherein said pressure vessel is connected with a nozzle by means of a line, which is equipped with a filter: 
 (d) adjusting of the air pressure in the pressure vessel; 
 (e) applying the suspension via a nozzle to a cardboard ribbon, wherein only a side of said cardboard ribbon is impregnated with the suspension; and 
 (f) forming of the cylinder-shaped toilet paper cardboard roll. 
 
     
     
         13 . A method according to  claim 12 , wherein the filter of the line is selected form the group consisting of Filter 45-Mesh, Filter 50-Mesh, Filter 60-Mesh, Filter 70-Mesh, Filter 100-Mesh and Filter 120-Mesh. 
     
     
         14 . (canceled) 
     
     
         15 . A household product or consumer product comprising the paper roll according to  claim 10 .