Method of applying treatment chemicals to a fiber-based planar product via a revolving belt and planar products made using said method

Abstract

A method of applying treatment chemicals to a fiber-based planar product, particularly tissue, includes the steps of: a) applying a treatment composition containing the treatment chemicals to a revolving belt ( 1 ) and b) bringing the revolving belt ( 1 ) into contact with the moving fiber-based planar product ( 3 ), thereby transferring the treatment composition from the revolving belt ( 1 ) via the contact surface to the moving fiber-based planar product ( 3 ). An apparatus suitable for performing this method, includes: at least one application element ( 4, 5 ) for applying treatment compositions to a revolving belt ( 1 ), and the revolving belt ( 1 ) that is in contact with moving fiber-based planar product ( 3 ) via a contact surface and transfers the applied treatment composition via this contact surface to the moving fiber-based planar product ( 3 ).

1 . A method of applying treatment chemicals to a dry tissue paper, said method comprising the steps of: 
 applying a treatment composition containing the treatment chemicals to a revolving belt ( 1 ) and bringing the revolving belt ( 1 ) into contact with the moving tissue paper ( 3 ), thereby transferring the treatment composition from the revolving belt ( 1 ) via the contact surface to the moving tissue paper ( 3 ), wherein on the side opposite the belt ( 1 ), the moving tissue paper ( 3 ) is brought into contact, via a contact surface, with a second revolving belt ( 2 ) to which a treatment composition is applied, thereby transferring the treatment composition from the revolving belt ( 2 ) via the contact surface to the opposite side of the tissue paper.    
     
     
         2 . A method according to  claim 1 , wherein the moving fiber-based planar product and the revolving belts have approximately the same speed during contact.  
     
     
         3 . A method according to claims  1  or  2 , wherein the first belt ( 1 ) and/or the second belt ( 2 ) are subjected to a cleaning stage disposed after contact with the tissue paper ( 3 ) and before the application means ( 4 ,  5 ), relative to the direction of travel of the belt.  
     
     
         4 . A method according to at least one of  claims 1  to  3 , wherein the application of the treatment composition to at least one of the belts is effected by means of spray application and/or roller application.  
     
     
         5 . A method according to at least one of  claims 1  to  4 , wherein at least one belt is heated.  
     
     
         6 . A method according to at least one of  claims 1  to  5 , wherein at least one belt is structured.  
     
     
         7 . A method according to at least one of  claims 1  to  6 , wherein the treatment chemicals include at least one of the following constituents: 
 agents for skin care and protection selected from moisturizers, substituents for the skin's natural moisturizing factor (NMF), the cleavage products of collagen and/or glycerol;  
 skin care agents containing long-chain fatty acid esters (like sorbitan fatty acid ester or Cetiol®), lanolin or derivatives thereof;  
 fragrances containing natural, naturally identical or artificial perfumes; and/or  
 active cosmetic ingredients containing D-panthenol or the active camomile ingredient α-bisabolol or strength-boosting agents selected from wet-strength agents containing epichlorohydrin resins or crosslinked polyalkylene amines,  
 agents that promote the softness (e.g. bulk softness or surface softness) of the planar product, particularly the tissue, containing a polyhydroxy compound selected from ethylene glycol, propylene glycol, a liquid polyethylene glycol (derivative), a liquid polypropylene glycol (derivative) and/or glycerol, quaternary ammonium compounds, optionally in combination with the polyhydroxy compounds;  
 polysiloxanes, surfactants containing long-chain quaternary ammonium compounds, waxes, oils, and/or inorganic or organic pigments or dyes.  
 
     
     
         8 . A method according to at least one of  claims 1  to  7 , wherein the treatment composition contains additional auxiliary substances and additives.  
     
     
         9 . A method according to at least one of  claims 1  to  8 , wherein the amount of applied treatment composition is 2 to 50 wt. %, relative to the dry tissue paper (oven dried).  
     
     
         10 . A tissue paper obtainable according to a method comprising the steps according to at least one of claims  1 - 9 .  
     
     
         11 . A tissue according to  claim 10 , in the form of a cleaning wipe, sanitary product, paper handkerchief, household towel, hand towel, tissue for facial use, a napkin/serviette, bed linen or a garment.