NEWSPRINT PAPERMACHINE TRIALS WITH POLYOXYETHYLENE AS A WET-END ADDITIVE.

In the reported experiments, five mills trials were conducted to evaluate polyoxyethylene (PEO) as a wet-end additive for newsprint and groundwood-specialty manufacture, and an additional trial was run to determine the effectiveness of PEO addition at a save-all. On the paper machines, PEO addition increased fines retention up to 10%. An increase in opacity of the paper of up to 4% was observed. PEO was not very effective in some furnishes; in …