Paper pattern preparation
Take mechanical pulp and chemical pulp respectively according to the proportion of mechanical pulp 0%, 9.3%, 20.0%, 30.0% for papermaking. During the copying process, the same comparison conditions were strictly followed, namely the same raw materials, the same operating equipment, the same experimental time, and the same copying quantity and moisture content.
Lay the copied paper face up on the coating board, fix the upper end with clips and place the RK coating rod, take an appropriate amount of paint and stir evenly, place the coating on the paper as far as possible along the coating rod, and spread the coating rod along the coating rod at a constant speed with both hands. Paper scraped off. After cleaning the coating bar, dry the coated paper sheet with hot air. Then use a small calender with a rotating speed of 12mm/s and a pressure set to 1600mmHg, and the coated paper sample is calendered one pass to the pressure roller to obtain the coated paper sample.
