Similar to virgin fibres, recycled-fibre stock must meet defined quality criteria for a given furnish. ln this sense, quality refers to the fibre characteristics, such as the type and condition of fines, and to additives and contaminants. Recycled fibre processing systems are significantly more complex than virgin-fibre systems for two reasons. First, the recovered paper…

One basic characterisation of the rheology of a fluid is the description of the correlation between the forces acting on a fluid,f.i. in form of a pressure gradient, and the shear forces or the shear stress occurring in the fluid. If we consider a simple pipe flow as sketched in Figure 1, the driving force of…

New Line Triumph On January 19, 2026, the PM5 specialty paper project of Jiangxi Zhenguan Eco-Degradable New Materials Co., Ltd. (hereinafter referred to as Jiangxi Zhenguan) was successfully commissioned and achieved first paper on the reel. The project mainly produces glassine paper. Yunda supplied a one-stop stock preparation solution covering the entire process from raw…

When we first made it, our sales didn’t care about it. They said it’s so heavy. It’s so heavy to carry in a bag that nobody wants it. However, some chief engineers asked me, Mr. Xu, Could you get me some of those small screen baskets? All operators in our workshop are asking for it,…

Hello everyone ,I am Sensen Wang, a reporter from China Paper Magazine. I am now in Xinzheng, Henan Province attending the China–Russia Pulp and Paper Industry Deep Cooperation Seminar held at Zhengzhou Yunda Paper Machinery . The purpose of this conference is to promote mutual exchange and learning between China and Russia in the pulp…