Pitch reduction on paper machine forming fabrics and press fabri

Details Pitch reduction on paper machine forming fabrics and press fabri Pitch reduction on paper machine forming fabrics and press fabri

1992-11-25

1994-11-29

Chin, Peter

Paper making and fiber liberation

Processes and products

Conditioning, preparing or repairing of apparatus

162 5, 1621645, 162166, 1621682, 162DIG4, 162158, 1621641, 1621643, 1621681, D21H 2102

Patent

active

053686942

ABSTRACT:
A method for controlling or inhibiting the deposition of pitch derived from aqueous pulp suspensions having a neutral or cationic soluble charge onto paper machine equipment surfaces which contact the pulp, comprising a) contacting the pulp with an anionic polymer in an amount sufficient to maintain an anionic charge in the pulp and b) contacting the paper machine equipment surfaces with a cationic polymer in an amount sufficient to inhibit the deposition of pitch deposits thereon.

REFERENCES:
patent: 4184912 (1980-01-01), Payton
patent: 4861429 (1989-08-01), Barnett et al.
patent: 4956051 (1990-09-01), Moreland
patent: 4964955 (1990-10-01), Lamar et al.
patent: 4995944 (1991-02-01), Aston et al.
Thord Hassler, "Pitch Deposition in Papermaking and the Function of Pitch-Control Agents", Jun. 88, TADPI Journal, pp. 195-201.

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