Can poly aluminum chloride be used as an anionic trash catcher?

The use of secondary fiber and rejected pulp as fiber raw material for medium paper is very economical. However, the use of reject pulp results in the breaking or removal of the fiber charge due to highly anionic in the rejected pulp. This research aims to determine the optimum dosage of poly aluminum chloride (PAC) as an anionic trash catcher.

Does a polyamine ATC deteriorate a deinked pulp?

In this paper, a deinked pulp was first pre-treated with a polyamine ATC; then, the effectiveness of two subsequently-added DSAs, anionic polyacrylamide (APAM) and cationic polyacrylamide (CPAM), were compared. Results showed that when the ATC was used alone, it deteriorated paper formation, resulting in a decrease of paper strength.

Do polyethylenimine and polyaluminium chloride influence wet end system and paper properties?

The influences of polyethylenimine (PEI) and polyaluminium chloride (PAC) on wet end system and paper properties were discussed based on circulating white water, neutral sizing, double component retention and drainage aid system, filler loading and so forth.

How cationic papermaking additives affect a polyelectrolyte complex?

The anionic trash can form polyelectrolyte complexes with cationic papermaking additives, thus resulting in a low efficiency of cationic additives, increased wet end chemical cost, reduced drainage, poor product quality and inconvenient manipulation of papermaking machine [4-7] .

What is ATC & how does it affect paper strength?

ATC is a polyelectrolyte with a high cationic charge density and low molecular weight. The main purpose of using ATC is to eliminate the interference of anionic trash present in the wet-end of papermaking systems. The anionic trash, after being fixed onto fibers and finally “dispersed” in the paper webs, will inevitably affect paper strength.

Does anionic trash catcher pretreatment affect the effectiveness of dry strengthening agent?

"Influence of anionic trash catcher pretreatment on the effectiveness of dry strengthening agent," BioRes. 8 (4), 6078-6086. Cationic dry strength agents (DSAs) are commonly used for paper strengthening.