Southern bleached softwood kraft (SBSK) is a
wood pulp
Pulp is a lignocellulosic fibrous material prepared by chemically or mechanically separating cellulose fibers from wood, fiber crops, waste paper, or rags. Mixed with water and other chemical or plant-based additives, pulp is the major raw ma ...
mainly produced in the southern USA. The main raw materials are
slash pine,
longleaf pine
The longleaf pine (''Pinus palustris'') is a pine species native to the Southeastern United States, found along the coastal plain from East Texas to southern Virginia, extending into northern and central Florida. In this area it is also known as ...
,
shortleaf pine,
loblolly pine
''Pinus taeda'', commonly known as loblolly pine, is one of several pines native to the Southeastern United States, from East Texas to Florida, and north to southern New Jersey. The wood industry classifies the species as a southern yellow pine. U ...
and
virginia pine.
Properties
SBSK is produced from mixed fibre sources, but the main wood species of the pulp is dominating the properties. All have long fibres. Slash pine and longleaf pine have thick walled fibres and makes the pulp suitable for fluff pulp.
Applications
SBSK is used in
fluff pulp,
tissue paper
Tissue paper or simply tissue is a lightweight paper or, light crêpe paper. Tissue can be made from recycled paper pulp on a paper machine.
Tissue paper is very versatile, and different kinds of tissue are made to best serve these purposes, whi ...
,
filter paper Filter paper is a semi-permeable paper barrier placed perpendicular to a liquid or air flow. It is used to separate fine solid particles from liquids or gases.
The raw materials are different Pulp (paper), paper pulps. The pulp may be made from soft ...
and
mercerised pulp. It is used as reinforcement fibres when making
paper
Paper is a thin sheet material produced by mechanically or chemically processing cellulose fibres derived from wood, Textile, rags, poaceae, grasses or other vegetable sources in water, draining the water through fine mesh leaving the fibre e ...
or as raw material for
kraft paper
Kraft paper or kraft is paper or paperboard (cardboard) produced from chemical pulp produced in the kraft process.
Sack kraft paper (or just sack paper) is a porous kraft paper with high elasticity and high tear resistance, designed for packa ...
.
See also
Northern bleached softwood kraft
Northern bleached softwood kraft (NBSK) is the paper industry's benchmark grade of pulp. Market NBSK is produced mainly in Canada and the Nordic countries. Some NBSK is also produced in north-western United States and in Russia. NBSK futures are ...
References
Papermaking
Pulp and paper industry
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