To optimize the wet end chemistry of paper machine for clean production ——The application of particulate retention and drainage system in high speed newsprint machine;

A study on improving retention and drainage performance in papermaking with asbestos-free latex packing materials

The product was applied in bleached reed pulp as retention and drainage aids.

The application of P47 retention and drainage aid in offset papermaking could consistently improve the first pass retention, reduce the loses of fines and other chemical materials, speed up the water drainage from wire and press parts, lower the production cost and have a great potential for broad application.

Through the optimization of retention and drainage aid system in paper machine,its runnability was increased,paper uniformity and strength were improved significantly with a breaking length gain of 0.

The effect of the copolymer on drainage and retention in corrugated paper pulp was investigated.

In this paper,cationic polyacrylamide(self-made and imported)/modified bentonite system was used as retention and drainage aids for bleached wheat straw pulp.

This paper researched the influence of amphoteric starch, CPAM and CPAM/BT retention and drainage aids systems on printability of reproduced newsprint.