Flexible calcium carbonate with improved calcium carbonate retention, tissue paper including the same, and manufacturing method therefor

Abstract

Herein disclosed are flexible calcium carbonate (FCC) comprising micro fibrillated cellulose (MFC) and calcium carbonate attached to the micro fibrillated cellulose, tissue paper containing the same, and a manufacturing method therefor.

1 . A flexible calcium carbonate (FCC) comprising:
 micro fibrillated cellulose (MFC); and   calcium carbonate attached to the micro fibrillated cellulose.   
     
     
         2 . The flexible calcium carbonate (FCC) of  claim 1 , wherein the micro fibrillated cellulose and calcium carbonate have a weight ratio of 1:15 to 1:25. 
     
     
         3 . The flexible calcium carbonate (FCC) of  claim 2 , wherein the FCC has a length ranging from 20 μm to 40 μm. 
     
     
         4 . Tissue paper, comprising the flexible calcium carbonate (FCC) of  claim 1  in an amount of 1 to 10 parts by weights. 
     
     
         5 . A method for manufacturing tissue paper, the method comprising the steps of:
 preparing micro fibrillated cellulose (MFC);   synthesizing calcium carbonate attached to the micro fibrillated cellulose (MFC) to produce flexible calcium carbonate (FCC); and   adding the flexible calcium carbonate (FCC) to the tissue paper.   
     
     
         6 . The method of  claim 5 , wherein the step of preparing micro fibrillated cellulose is performed using a colloid mill. 
     
     
         7 . The method of  claim 5 , wherein the step of preparing micro fibrillated cellulose is performed such that the micro fibrillated cellulose comprises main and secondary branches, with main and secondary branches existing at a ratio of 1:100 to 1:200. 
     
     
         8 . The method of  claim 7 , wherein the main branches have a width of 5 μm to 12 μm and a length of 500 μm to 850 μm, and the secondary branches have a width of 60 nm to 400 nm and a length of 8 μm to 18 μm. 
     
     
         9 . The method of  claim 5 , wherein in the step of producing the flexible calcium carbonate (FCC), the micro fibrillated cellulose and calcium carbonate have a weight ratio of 1:15 to 1:25. 
     
     
         10 . The method of  claim 5 , wherein the step of producing the flexible calcium carbonate (FCC) is performed in a container into which CO 2  is introduced. 
     
     
         11 . The method of  claim 5 , wherein the step of producing the flexible calcium carbonate (FCC) is performed such that the FCC has a length of 20 μm to 40 μm. 
     
     
         12 . The method of  claim 5 , wherein the step of adding the flexible calcium carbonate (FCC) to the tissue paper comprises incorporating 1 to 10 weight parts of the flexible calcium carbonate (FCC).