2011 Environmental Statement 1.8 MB - Sappi

1.2.1 Storage of raw materials and
additives
Raw materials and additives are stored in a
number of different locations. Storage of materials
classified as environmentally hazardous under
the WMS (Wet Milieugevaarlijke Stoffen, the
Dutch Environmentally Hazardous Substances
Act) or under GHS (the Globally Harmonized System)
is provided by an external company, certified
according to the ISO 14001:2004 standard,
from where supplies are delivered on call to the
different work locations (departments) of Sappi
Nijmegen BV. Internal storage at the mill itself fully
complies with all legal and regulatory requirements.
1.2.2 Description of paper production
processes
The process of paper production itself consists
of several steps, including stock preparation, the
actual production of coated reel paper on the
paper machine and reel finishing.
Stock preparation
In stock preparation, raw materials (cellulose,
broke, additives and chemicals) are suspended
in water in a so-called pulper. Broke is a pulp
mixture consisting of water and paper left over
from previous production runs.
Paper production
Sappi Nijmegen B.V. has one paper machine -
PM 7. From special tanks, the paper stock is
transferred to the headbox, from where it is
evenly distributed across the wire. The final properties
of the base paper, including its grammage,
are determined by the amount of fibres in
the suspension, the speed of the wire and the
speed at which the suspension leaves the headbox.
After the wire section, remaining water is
removed in the press section. This pressing has
a direct effect on the strength of the resulting
paper. After it has been pressed, the paper web
passes through a drying section. The final process
step involves the application of coating, in
two layers on each side of the paper. This coating
substance is prepared in a dedicated coating
kitchen. Finally, the paper web is reeled to
so-called mother reels.
Environmental Statement 2011 7