Adding water resistance
The water sensitivity of paper and board coating originates from the fact that water-soluble binders tend to loose their binding power in contact with water and dissolve. There are many chemically different types of insolubilizers or crosslinkers, but they all have the same function - to add water resistance to the finished coated paper or board.
Water resistance is particularly important in offset printing. In double-coated boards, crosslinkers are used in the pre-coating to impart water resistance against the topcoat. Commonly used insolubilizers are glyoxal, glyoxal-urea resins and zirconium based products such as ammonium zirconium carbonate and potassium zirconium carbonate.
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Silicone - Used in more than you could ever imagine
Silicones have a positive effect on virtually every aspect of the paper industry. From pulp processing to paper finishing, label making, and paper recycling, silicones add value, improve productivity, and lessen the impact of paper-making operations on our environment.
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Half a century of knowledge
In 2012, Nopco Paper Technology is set to celebrate its 50th anniversary. In the same way a tree's trunk reveals its age and growth, the last fifty years have clearly made their mark and shaped the Nopco we know today.
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