Sandwell specialists offer years of practical experience in a wide range of both paper and board grades, including linerboard, corrugating medium, tissue, towel, coated and uncoated printing papers, newsprint and specialty grades. Our work extends from minor modifications to new machine installations in either existing or greenfield plants, and includes both recent and wide experience with modern high-speed paper machines.
We have an excellent reputation for our ability to assess the performance of a paper machine and define opportunities to increase productivity, quality, efficiency and profitability. Integral to our approach is the use of mass-balance analysis, part of the capacity review we commonly apply when evaluating equipment performance.
Whether the problem concerns limitations of the paper machine or of the interacting equipment, we either define an operating condition within which the machine can perform well, or specify the modifications required to remove the limitation.
Current work includes tissue machine installations and upgrades, linerboard and newsprint optimization studies, and modernization of sack kraft paper mills.
Catalyst Paper Corporation, British Columbia
Crofton Division ATMP Plant - Phase II
ATMP Phase 2, a two part upgrade project: the addition of a complete third TMP reject refiner line, and improvements to the ATMP dewatering and conveyor system.
Tembec Inc., Témiscaming, Québec
Board machine optimization
With three fourdriniers and three on-line coaters, this paper machine produces three-ply bleached board, coated both sides. To optimize production and increase output to 175,000 tonnes/year, Sandwell first conducted a technical audit that included stock preparation, the coating kitchen and finished product wrapping line. The audit identified the required modifications, the costs, and an implementation sequence that minimized the project's overall costs. We subsequently provided the detailed engineering for the project.
Georgia-Pacific Corporation, Crossett, Arkansas
Tissue machine installation
Rebuilding the mill's No. 6 tissue machine included a new single-layer headbox, crescent former and pressure roll, a new reel and water jet slitter, and a rebuilt winder.
Corner Brook Pulp & Paper Ltd., Corner Brook, Newfoundland
Newsprint machine upgrade
Upgrading the mill's No. 7 newsprint paper machine included installation of a new winder, winder pulper and reel, completed without interrupting operation of the existing winder. The improvements have increased both the paper machine speed and the quality of the finished paper roll.
Inland Eastex Forest Products Corporation, Evadale, Texas
Installation of coated bleached paperboard machine
The new 600 t/d paper machine operates at 1,600 fpm with a balance speed of 2,500 fpm and paper trim of 262 inches from the winder. It includes an air-padded headbox, cantilevered fourdrinier with a top former, suction pickup, straight-through first press and a shoe press in the second press position. The main dryer section is followed by a size press and dryers, a wet calender stack, dryers, a dry calender stack and a reel, three on-machine coaters and dryers, two soft-nip calenders and a second reel.
