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This pulp grade is very diverse. All NBSK pulps have long fibers and is often used as reinforcement pulp. [1] NBSK from British Columbia is mainly from Lodgepole Pine, with a significant amount of White Spruce. Redcedar, douglas fir, hemlock, and larch make up a smaller portion of the chip furnish. NBSK is known for having longer fiber lengths ...
The kraft process (also known as kraft pulping or sulfate process) is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibres, the main component of paper. The kraft process involves treatment of wood chips with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na 2 S), known as white ...
Crofton Mill is a pulp mill and paper mill located in the Vancouver Island town of Crofton, British Columbia. The mill has 3 paper machines (only 2 are operational) and 2 pulp machines, which produce 349,000 tonnes of newsprint and directory paper , and 355,000 tonnes of northern bleached softwood kraft .
Southern bleached softwood kraft (SBSK) is a wood pulp mainly produced in the southern USA. The main raw materials are slash pine , longleaf pine , shortleaf pine , loblolly pine and virginia pine .
Cacia Pulp and Paper Mill, [211] [212] Figueira da Foz Pulp and Paper Mill, Figueira da Foz [211] [213] Setúbal Pulp and Paper Mill, Setúbal [211] [214] Altri Celbi, Celulose Beira Industrial S.A, Figueira da Foz Caima-Indústria de Celulose S.A., Constância Celtejo, Empresa de Celulose do Tejo, S.A., Vila Velha de Ródão
The invention of the recovery boiler, by G.H. Tomlinson in the early 1930s, [12] allowed kraft mills to recycle almost all of their pulping chemicals. This, along with the ability of the kraft process to accept a wider variety of types of wood and to produce stronger fibres, [13] made the kraft process the dominant pulping process, starting in ...
Catalyst Paper Corporation is a pulp and paper company based in Richmond, British Columbia. It operates five pulp mills and paper mills, producing a combined 1.8 million tonnes of paper and 491,000 tonnes of market pulp annually. The mills mostly produce magazine paper and newsprint.
Absorbent kraft paper is made with controlled absorbency (i.e. a high degree of porosity). It is made of clean low kappa hardwood kraft and has to have a good uniformity and formation. Spinning kraft paper is an especially strong type of kraft paper with relatively low grammage (40 g/m 2). This paper requires the best possible machine direction ...