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From wood to pulp.
Wood comes to Segezha mill as logs or chips from saw mills. The logs from the wood yard are slashed, debarked and chipped, and then go to the digester or are stored for future use.
The production process starts at the two KMW pulp lines, where the chips are processed and cooked into pulp. As already mentioned, our digesters are able to produce 400 thousands tons of high quality unbleached sulphate pulp annually.
From the by-products of digesting we produce tall oil and rosin, and what is even more important, we conserve power and heat and also protect the environment by utilising black liquor, which is a by-product of cooking, for heating and green liquor for a further cooking process. The pulp is then used for paper production.Where pulp becomes paper
The pulp from cooking plant is then converted into kraft and sack paper on our three paper machines. One of these machines will soon be able to manufacture kraftliner, which is needed for corrugated board packaging. Our equipment is able to manufacture a wide range of kraft paper from 70 g/m2 to 115 g/m2. We also produce polyethylene coated paper and bitumen paper for moisture protection of packed productsPaper Production
Paper machine PM 9 PM 10 PM 11 The machine was installed to produce sack paper and the kraftliner sack paper kraftliner and sack paper Manufacturer Valmet Valmet Petrozavodskmash Year of manufacturing 1972 1972 1978 Year of commissioning 1972 1973 1979 Trimmed width (mm) 6300 6300 6300 Operating speed (m/min) 550 550 550 Annual production capacity (t/a) 110 000 110 000 110 000 Pulp for paper production 100 % softwood sulphate unbleached 100 % softwood sulphate unbleached 100 % softwood sulphate unbleached Basis weight of paper (gsm) 65-100 65-100 75-115 Reel width (cm) 75-165 75-165 75-210 Main equipment PM 9 PM 10 PM 11 Stock-preparation department, 4-stage cleaners Bauer Cleaner and Magna Cleaner Bauer Cleaner and Magna Cleaner UVK-500 Thickeners Eimco - 2 units
BgVk-60 - 1 unitEimco - 3 units BgVk-60 - 4 units Refiners Suterland AB-54
with 3 stages - 7 units
Suterland AB-54
with 3 stages - 7 units3 stage refining:
ST-1070 - 5 units and
MDS-33-1 - 1unitSizing Rosin glue, alumina Rosin glue, alumina Rosin glue, alumina Paper machine, type fourdriner with closed head box Valme Valme Sym-Flow Press section, presses 1. Pick-Up
2. Suction press
3. Venta-Nip1. Pick-Up
2. Suction press
3. Venta-Nip1. Pick-Up
2. Suction press
3. Venta-NipDrying section Contact convection drying, 59 dryers
Contact convection drying, 59 dryers
Contact convection drying, 59 dryers Slitter Valmet Valmet S5P-20 (IzhTyazhMash) Working width (mm) 6300 6300 6300 Roll handling and packing line Valmet Valmet TS-22 (Kaliningrag factory)
Lamb (installed in March 2001)Capacity( reells/h) 60 60 60 Control and automation system Measurex Measurex Alcont and Lippke PM 9 PM 10 PM 11 How the sacks are made
Segezha is the largest manufacturer of sacks in Russia and supplied in the past over 60 % of all sacks for the former Soviet Union. Bitumen sacks manufactured here are completely waterproof. Sack production is highly customised - sacks are produced to order with a range of strength properties and varying numbers of paper plies. Segezha mill can produce sewn or glued, open mouth or valve sacks.
Paper sacks are used by producers of cement, foodstuffs, animal food, and in chemical industries. Segezha's aim is to increase and develop the sack market in Russia as, obviously, sack packaging is a very important requirement in this country.
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