The Wet End
- Wood pulp is first diluted to 99% water and 1% fibre to form a slurry.
- The slurry is pumped through a slice onto a belt which vibrates to drain off some of the water, allowing the fibres to interweave.
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The Press Section
- A series of presses or rollers are used to wring out the excess water from the pulp as it is stretched out into a rough paper.
- The thickness of the paper/board is determined at this stage.
- The gap between the rollers is adjusted to allow for different thicknesses.
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The Dryer Section
- The paper/card is dried through a series of steam heated rollers by removing any left over moisture.
- After this, sizing agents, starches and resins can be added to enhance the paper's properties.
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The Calendar Section
- The paper is finally fed through another set of rollers which gives the paper a uniform thickness.
- The pressure applied to the paper determines it's finish.
The paper is then wound onto a web after calendaring tobe stored.
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