Fire retardant adhesive tissue

Abstract

A flame retardant adhesive tissue paper for fabricating moldable structures, particularly suitable for forming laminates for the interior of automobiles is provided. The flame retardant adhesive tissue is prepared by screen printing an aqueous paste dispersion including a flame retardant and thermoplastic adhesive dispersed therein in discontinuous pattern onto one surface of the paper. After removal of water, the drying temperatures is increased to activate the thermoplastic adhesive to adhere to the surface of the tissue with the flame retardants solids dispersed within the interior of the tissue paper. The adhesive coated tissue paper has good acoustic properties and imparts flame retardancy to a laminate including it.

1 . A fire retardant adhesive tissue paper, comprising 
 a tissue paper formed of a plurality of fibers;    discontinuous thermoplastic adhesive disposed on one surface of the tissue paper; and    flame retardant solids dispersed between the fibers of the tissue paper.    
     
     
         2 . The fire retardant and adhesive tissue paper of  claim 1 , wherein the fibers are cellulose fibers.  
     
     
         3 . The fire retardant and adhesive tissue paper of  claim 2 , wherein the paper has a porosity between 60 to 90 ft 3 /min/ft 2 .  
     
     
         4 . The fire retardant and adhesive tissue paper of  claim 1 , wherein the thermoplastic adhesive is randomly dispersed on the one surface of the tissue paper.  
     
     
         5 . The fire retardant adhesive tissue of  claim 1 , wherein the thermoplastic adhesive is dispersed on the one surface of the tissue paper in a geometric pattern.  
     
     
         6 . The fire retardant adhesive tissue paper of  claim 4 , wherein the thermoplastic adhesive is in the form of dots.  
     
     
         7 . The fire retardant adhesive tissue paper of  claim 5 , wherein the thermoplastic adhesive is in the form of dots.  
     
     
         8 . The fire retardant adhesive tissue of  claim 7 , wherein the dots are applied in a geometric pattern.  
     
     
         9 . The flame retardant adhesive tissue paper of  claim 8 , wherein the dots are sized between about 500 to 550 microns.  
     
     
         10 . The flame retardant adhesive tissue paper of  claim 1 , wherein the thermoplastic adhesive covers between about 8 to 15 percent of the one surface of the tissue paper.  
     
     
         11 . The fire retardant adhesive tissue paper of  claim 1 , wherein the fire retardant is present in the tissue paper in amounts between about 1.7 to 8.5 g/m 2  (0.05 to 0.25 oz/yd 2 ).  
     
     
         12 . The fire retardant tissue paper of  claim 1 , wherein the polymer adhesive is present in amounts between about 5.1 and 8.5 g/ m 2  (0.15 and 0.25 oz/yd 2  ).  
     
     
         13 . The fire retardant adhesive tissue paper of  claim 1 , wherein the thermoplastic adhesive is polyester.  
     
     
         14 . An aqueous dispersion of inorganic flame retardant and powder thermoplastic adhesive.  
     
     
         15 . The aqueous dispersion of claim  21 , further including a thickener for adjusting the viscosity of the dispersion.  
     
     
         16 . The aqueous dispersion of claim  21 , wherein the dispersion includes about 40 to 60 weight percent solids.  
     
     
         17 . An apparatus for preparing a fire retardant adhesive tissue paper, comprising: 
 a tissue paper supply feeder;    a tissue paper feeders for feeding the uncoated tissue paper;    a coating head for depositing an aqueous dispersion of an inorganic flame retardant and powder thermoplastic adhesive on to one surface of the transported tissue paper;    a first heater for drying the paper coated with the aqueous dispersion to remove water therefrom;    a second heater for increasing the temperature of the coated tissue to active the thermoplastic resin;    a cooling station for cooling the coated tissue paper.    
     
     
         18 . The apparatus of claim  24 , where the first and second heater are in an oven having a first heating section for first removing water and a second heating section for activating the resin.