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7000 mm paper machine producing newsprint of 42 to 48 gsm, speed 900 m/min, capacity 400 TPD. L/H drive sectional electric. drives with gearboxes located at pope, calender, four dryer sections, three in the presses and two on top and bottom wires. Drive is a Harland Simon GEC rebuild, Thyristor control and machine drive via enclosed gearing on the dryers. 

The upgrade history is as follows:

Headbox Valmet Symflow was installed in 1989.

Valmet Top Former was originally installed in 1984.

The pre-drainage unit was put in in 1990.

The Metso presses are from approximately the 1990’s.

The Harland Simon GEC drive system was rebuilt in 1990’s.

Two roll calender with bottom Kuster roll was rebuilt in 2002.

Also, the following works were carried out in 1995 -1997:

A multi-disk refiner was installed, compressors installed, duo flow systems, auto screen dumping rake classifier, replacement weighing conveyor, surface water drains, dock leveller system, CTMP  pulper and conveyor and several individual motor and pump combined systems requiring DOL LV and HV starters or VSD's for motor control.

 

Approach Flow:

Three primary screens comprising Beloit B40 and two Beloit 16” Centriscreens. Secondary screen is a Jylhavara pressure screen JS-140-LO2M. Voith rejectsorter for final rejects. Drum thickener for back water fibre recovery.

 

Wire section

Valmet flowbox with dilution control, auto profile setting on slice, stainless steel wire frame, cantilevered design, four stainless foil units, Valmet top former, suction couch roll. Dryness after the wire: 20%.

 

Press section

Suction pick up from wire, combi type press with two rolls running against a central roll, plain press rolls, second press with bottom kuster roll. Cantilevered design. Dryness after the press section: 45%.

Under machine pulper.

 

Dryer section

43 dryers on A/F bearings and rated 70 PSI operating pressure, dryers 48” diameter with bolted ends ends recently rejointed , on A/F bearings and rated 50 PSI operating pressure, enclosed gear drive, internal siphons, sheathen rope feed, manual felt tensioning. Fully enclosed hood with front opening doors. Under machine pulper at the last dryer.

 

Calender

Two roll calender with bottom Kuster roll, Fibron tail feed from dryers through calender to reel up, Measurex cross machine profile, MX 2000 with Divici upgrade, measuring  gsm, moisture etc. Ulma hole detector, Calcoil on calender roll. Broke pulpers at press section and last dryer. In the basement is a SAFEMATIC auto lub system to all dryer, calendar and reel up bearings.

 

Vacuum system

Sultzer blower type RC3A-4NL-80 with drive via a gearbox and a Seimens motor.

Sultzer blower type RC3A-4NL-80 with drive via a gearbox and a Seimens motor.

In basement two air receivers AR60 and AR66.

 

The Rewinder is Jagenberg Vari Dur: Drive L/H, brake generator for reel spools, 11 slitters, tambour unwind with lateral movement, tail feed, 7000 mm deckle in and 6850 mm out,  unwind diameter 1500mm , rewind diameter 1250 mm on newsprint and 1500 mm on other grades, air box assisted, shaftless rewind reel ejector and lowering table. Twin motor drive each 116 kw and rewinder model is 85-15/850/7400mm, year 1982. Core feed manual from the side of the rewinder.