METHOD FOR MANUFACTURING OF FUNCTIONAL CHARCOAL BOARD OF POROUS CABON MATERIALS AND CHARCOAL BOARD COMPOSITE USING NON-FORMALDEHYDE-BASED ADHESIVES

摘要

PURPOSE: Provided is a method for manufacturing of functional charcoal board using aqueous vinyl-based adhesive and isocyanate-based adhesive wherein the particle size of the board is such that it has sufficient strength and surface property while retaining the nature of charcoal. CONSTITUTION: The method comprises adjusting final matt water contents of charcoal board in the range of from 26 to 50% by using aqueous vinyl-based adhesive such as PVA and isocyanate-based resin such as methyl diisocyanate and the like alone or in combination as adhesives and subjecting it into three-step hot press processes wherein the temperature of hot press is 170 deg.C and the schedules are 30-10-30 kgf/cm2(1 min - 1 min and 30 sec - 6 mins) to form #40-60 type and mixed type(#6-12(7%), #12-18(14%), #18-40(43%), #40-60(23%), #60-100(9%), #100(4%)) charcoal board. Further, on the black surface of charcoal board is overlayed patterned veneer for aesthetic effects.