Moisture-proof, water-disintegratable fiber composite material

Abstract

Moisture-coherent, water-disintegrable fiber composite material ( 1 ) featuring improved shelflife.

1 . A moisture-coherent, water-disintegrable fiber composite material ( 1 ), comprising:
 a fiber component ( 7 ) comprising a number of fiber elements ( 6 ),   a binder component ( 9 ) comprising at least one binder which is soluble and/or swellable on contact with water and which comprises at least one organic binder component, more particularly formed of or comprising at least one polysaccharide containing acid groups,   a moistening component ( 10 ) comprising at least one moistener which comprises at least one volatile organic moistener component ( 11 ) which has a constitution such that a condensation product ( 12 ) formed on a condensation surface by evaporation and subsequent condensation of the volatile organic moistener component ( 11 ) and also of further constituents of the moistening component ( 10 ) leads to more negligible swelling and/or dissolution of the fiber elements ( 6 ) and/or of the binder than a condensation product ( 12 ) formed of pure water.   
     
     
         2 . The moisture-coherent fiber composite material as claimed in  claim 1 , characterized in that the at least one volatile organic moistener component ( 11 ) is a volatile alcohol or a mixture of at least two volatile alcohols. 
     
     
         3 . The moisture-coherent fiber composite material as claimed in  claim 2 , characterized in that the alcohol is methanol, ethanol or propanol, butanol, pentanol. 
     
     
         4 . The moisture-coherent fiber composite material as claimed in  claim 1 , characterized in that the vapor pressure of the volatile organic moistener component ( 11 ) is higher than the vapor pressure of water. 
     
     
         5 . The moisture-coherent fiber composite material as claimed in  claim 1 , characterized in that the vapor pressure of the volatile organic moistener component ( 11 ) is higher than the vapor pressure of all other moistener components. 
     
     
         6 . The moisture-coherent fiber composite material as claimed in  claim 5 , characterized in that the volatile organic moistener component ( 11 ) has a weight fraction of 1 to 90 wt %, more particularly below 50 wt %, preferably below 35 wt %, more preferably below 20 wt %, very preferably below 10 wt %, based on the total weight of the moistener. 
     
     
         7 . The moisture-coherent fiber composite material as claimed in  claim 6 , characterized in that the volatile organic moistener component ( 11 ) has a constitution such that it has a molar fraction of 5 to 95%, more particularly 7 to 50%, preferably 10 to 50%, of an evaporation product ( 13 ) formed by evaporation of the volatile organic moistener component ( 11 ) and also of further moistener components. 
     
     
         8 . The moisture-coherent fiber composite material as claimed in  claim 1 , characterized in that the volatile organic moistener component ( 11 ) has a constitution such that by evaporation of the volatile organic moistener component ( 11 ) and also of further moistener components, a positively azeotropic mixture can be formed or is formed as evaporation product ( 13 ). 
     
     
         9 . The moisture-coherent fiber composite material as claimed in  claim 1 , characterized in that the moistener comprises at least one hygroscopic moistener component, more particularly a polyhydric alcohol of low molecular mass, preferably 1,2-propanediol, and/or a salt. 
     
     
         10 . The moisture-coherent fiber composite material as claimed in  claim 1 , characterized in that the moistener, more particularly the volatile organic moistener component ( 11 ), has bactericidal and/or bacteriostatic or fungicidal and/or fungiostatic properties. 
     
     
         11 . The moisture-coherent fiber composite material as claimed in  claim 1 , characterized in that the moistener comprises as a further moistener component at least one low-volatility organic component, more particularly a monomeric, oligomeric or polymeric diol or polyol compound. 
     
     
         12 . The moisture-coherent fiber composite material as claimed in  claim 1 , characterized in that it further comprises an organic amphoteric component ( 8 ). 
     
     
         13 . The moisture-coherent fiber composite material as claimed in  claim 12 , characterized in that the amphoteric organic component ( 8 ) serves in combination with the binder component ( 9 ) to form a polysalt and/or a polymeric aggregate which together with the moistener component or moistener associated with the moistening component ( 10 ) is nonsoluble or nondispersible. 
     
     
         14 . The moisture-coherent fiber composite material as claimed in  claim 1 , characterized in that comprises metal cations and/or metal cation salts for complexing with further constituents of the moisture-coherent fiber composite material ( 1 ), more particularly with the binder component and/or with a or the amphoteric organic component ( 8 ). 
     
     
         15 . The moisture-coherent fiber composite material as claimed in  claim 1 , characterized in that it is embodied as moisture-coherent cleaning, cosmetic or hygiene paper, more particularly as moisture-coherent toilet paper. 
     
     
         16 . The moisture-coherent fiber composite material as claimed in  claim 1 , characterized in that the fiber elements have a fiber length below an optionally fiber-element-specific plugging limit. 
     
     
         17 . A moistening component ( 10 ) for a moisture-coherent, water-disintegrable fiber composite material as claimed in  claim 1 , characterized in that it comprises at least one moistener which comprises at least one volatile organic moistener component ( 11 ) which has a constitution such that a condensation product ( 12 ) formed on a condensation surface by evaporation and subsequent condensation of the volatile organic moistener component ( 11 ) and also of further constituents of the moistening component ( 10 ) leads to more negligible swelling of the fiber elements ( 6 ) and/or of the binder than a condensation product ( 12 ) formed of pure water. 
     
     
         18 . An arrangement for storing and packing a moisture-coherent fiber composite material ( 1 ) as claimed in  claim 1 , comprising a storage and packing facility having a closed storage/packing volume for storing and packing a moisture-coherent fiber composite material ( 1 ), and at least one ply of a moisture-coherent fiber composite material ( 1 ) accommodated in the storage/packaging volume. 
     
     
         19 . A method for producing a moisture-coherent, water-disintegrable fiber composite material ( 1 ) as claimed in  claim 1 , comprising the steps of:
 providing a fiber component ( 7 ) comprising a number of fiber elements ( 6 ),   forming the moisture-coherent fiber composite material ( 1 ) by adding a binder component ( 9 ) comprising at least one binder which is soluble and/or swellable on contact with water and which comprises at least one organic binder component, more particularly formed of or comprising at least one polysaccharide containing acid groups, and a moistening component ( 10 ) comprising at least one moistener which comprises at least one volatile organic moistener component ( 11 ) which has a constitution such that a condensation product ( 12 ) formed on a condensation surface by evaporation and subsequent condensation of the volatile organic moistener component ( 11 ) and also of further constituents of the moistening component ( 10 ) leads to more negligible swelling and/or dissolution of the fiber elements ( 6 ) and/or of the binder than a condensation product ( 12 ) formed of pure water.   
     
     
         20 . The method as claimed in  claim 19 , characterized in that additionally at least one organic amphoteric component ( 8 ) is added.