SHEET MATERIAL COMPRISING FIBER AND NANO-MICROSCALE ORGANIC FIBRILLATED FILLER AND METHOD OF PRODUCING SAID SHEET MATERIAL

This invention relates to a sheet material comprising fiber and nano-microscale organic fibrillated filler， wherein the nano-microscale organic fibrillated filler comprises microfibrillated cellulose and starch granule in such a way that the microfibrillated cellulose is dispersed with starch granule， and the nano-microscale organic fibrillated filler has starch granule at least 15 wt pcnt . Besides， this invention also relates to a method of producing said sheet material comprising fiber and nano-microscale organic filler， wherein the method comprises the steps of (i) preparing pulp suspension， (ii) preparing nano-microscale organic fibrillated filler， (iii) adding the nano-microscale organic fibrillated filler into the pulp suspension， (iv) forming sheet material by pressing， and (v) drying the sheet material， wherein the preparation step of nano-microscale organic fibrillated filler provides the nano-microscale organic fibrillated filler comprising microfibrillated cellulose and starch granule in such a way that the microfibrillated cellulose is dispersed with starch granule.