Device and method for making tire puncture sealant

Abstract

A device and a method for making a tire puncture sealant having a higher concentration of propylene glycol are disclosed, wherein the device comprises: a container having a cylindrical space for a mixed solution of rubber latex and a tackifier; a squirter comprising at least one spout for pouring propylene glycol on the surface of the mixed solution in the container at a rate of 0.01 to 1.0 liter/minute per spout; and an agitator for the mixed solution in the container, comprising a stirring blade rotatable in the mixed solution to cause said surface a current speed of the mixed solution in a range between about 1.0 and about 10.0 meter/second during pouring the propylene glycol.

1 . A tire puncture sealant comprising 
 40 to 60 weight % of natural rubber latex whose rubber solid content is in a range of 50 to 70 weight %,    10 to 30 weight % of a resin tackifier, and    25 to 35 weight % of propylene glycol.    
     
     
         2 . A device for making a tire puncture sealant having a higher concentration of propylene glycol, the device comprising 
 a container having a cylindrical space for a mixed solution of rubber latex and a tackifier,    a squirter comprising at least one spout for pouring propylene glycol on the surface of the mixed solution in the container at a rate of 0.01 to 1.0 liter/minute per spout, and    an agitator for the mixed solution in the container, comprising a stirring blade rotatable in the mixed solution to cause said surface a current speed of the mixed solution in a range between about 1.0 and about 10.0 meter/second during pouring the propylene glycol.    
     
     
         3 . A device according to  claim 2 , wherein 
 said at least one spout is a plurality of spouts disposed within annular range between about 60% and about 90% of a radius R of said cylindrical space.    
     
     
         4 . A device according to  claim 2 , wherein 
 said at least one spout is a plurality of spouts arranged at regular intervals on a circle which is concentric with the cylindrical space    
     
     
         5 . A device according to  claim 2 , wherein 
 said at least one spout is a plurality of spouts disposed within an annular range between about 60% and about 90% of a radius R of said cylindrical space, and    the distance between the spouts is in a range of more than about 50 mm.    
     
     
         6 . A device according to  claim 2 , wherein 
 said at least one spout is a plurality of spouts arranged at regular intervals on a circle which is concentric with the cylindrical space, and    the distance between the spouts is in a range of more than about 50 mm.    
     
     
         7 . A device according to  claim 2 ,  3 ,  4 ,  5  or  6 , wherein 
 the spout is positioned at a height of more than 1 cm from the highest level of the mixed solution.  
 
     
     
         8 . A device according to  claim 2 ,  3 ,  4 ,  5  or  6 , wherein 
 the spout is positioned at a distance of more than 1 cm from the surface of the side wall of the cylindrical space.  
 
     
     
         9 . A device according to  claim 2 ,  3 ,  4 ,  5  or  6 , wherein 
 the spout is positioned at a height of more than 1 cm from the highest level of the mixed solution and at a distance of more than 1 cm from the surface of the side wall of the cylindrical space.  
 
     
     
         10 . A method for making a tire puncture sealant having a higher concentration of propylene glycol, the method comprising 
 prepareing a mixed solution of rubber latex and a tackifier in a cylindrical space of a container,    pouring propylene glycol on the surface of the mixed solution through at least one spout at a rate of 0.01 to 1.0 liter/minute per spout, and    agitating the mixed solution in the container to cause said surface a current speed of the mixed solution in a range between about 1.0 and about 10.0 meter/second during pouring the propylene glycol.