广东省造纸学会第十一次代表大会暨2016年学术年会在广州召开

Study on Improving Folding Endurance of Security Paper

广东省造纸学会第十一次代表大会暨2016年学术年会于2016年12月8日在广州造纸集团有限公司召开。来自广东省造纸行业和相关企业、科研院所和高等院校的近100名会员代表参加了会议。大会开幕式由第十届理事会常务副理事长何北海教授主持。

The effect of beating degree of cotton pulp, the mixing ratio of cotton pulp and synthetic fiber, the kind and dosage of reinforcing agents on the properties of the security paper were studied. It was found that there was great influence of beating on the fiber length and fibrillation of cotton pulp, they could influence the paper＇ s folding endurance. Combining the application of Yalley beater with PFI refiner, the cotton pulp was beaten to 34~SR by Valley beater then furthen refined with PFI refiner, the best folding endurance were 8794 and 10981 times when the beating degree were 49~SR and 67~SR. Using 30% PVA fiber which begins to melt at 70~C and 70% cotton pulp to produce the paper, the folding endurance of the paper only increased by about 7%. However, in comparision adding 0.4% APAM to the paper pro- duced with 100% cotton fiber, the folding endurance of the paper increased by 28%.