The purpose was to study the best printing solid density on secondary fibers newspaper,to realize the control of the image reappearance quality and improve secondary fibers newspaper's performance.

Through the research and analysis of its printability,it was concluded that the influential factors about the secondary fibers newspaper's printing quality.

On the basis of the wastewater disposal evaluation of secondary-fibre paper mills in Yihuang County,Jiangxi,China,and by taking a planned secondary-fibre paper mill with an annual production of 100 000 ton as the example,the effects of wastewater disposal on the water environment are investigated via modeling and forecasting,with CODCr and BOD5 as the control factors.

Hexamethyldisilazane improvement on the paper properties of secondary fibers;

By using secondary fibers, fiber raw material can be saved and the environment pollution caused by paper-making industry can be relieved, but there are still many unsolved problems in the recycle process.

This article mainly introduces the components of recycled paper, and the physical and chemical changes of virgin fibers, and the influence of the characteristics of secondary fibers on the papermaking and the characters of paper.