Difference between revisions of "Lamination paper"

Latest revision as of 09:20, 20 September 2010

Lamination paper is a paper used for laminates. Normally on particle or fiberboards giving a good-looking and resistant surface for use as furniture, decoration panels and flooring.^[1].

Properties

A laminate consists of multiple layers, each having its own distinct function. The base is most often particle- or fiberboards, then some layers of absorbent kraft paper. The last layers are a decor paper covered with an overlay. The lamination papers are covered with an inert resin, often melamine, which is cured to form a hard composite with the structure of paper. The laminates may also have a lining on the back side of laminating kraft to compensate for the tension created by the top side lamination.

Cheaper particle boards may have only a lining of laminating kraft to give surface washability and resistance to wear.

Absorbent kraft paper

The absorbent kraft paper is a normal kraft paper with controlled absorbency, which means a high degree of porosity. It is made of clean low kappa hardwood kraft with good uniformity. The grammage is 80 - 120 g/cm² and normally 2-4 plies are used^[1].

Decor paper

The decor paper is the most critical of the lamination papers as it gives the visual appearance of the laminate. The impregnation resin and cellulose have about the same refraction index which means that the cellulose fibers of the paper appear as a shade and only the dyestuffs and pigments are visible. Due to this the decor paper demands extreme cleanness and is produced only on small paper machines with grammage 70 - 150 g/cm^2[1].

Overlay

The overlay paper have grammage of 20 - 50 cm² and is made of pure cellulose, thus it must be made of well delignified pulp. It becomes transparent after impregnation letting the appearance of the decor paper coming through.

Laminating kraft

The laminating kraft have a grammage of 100 - 150 g/cm² and is a smooth dense kraft paper^[1].

References

1. ↑ ^{1.0 1.1 1.2 1.3} Paulapuro, Hannu (2000). "5". Paper and Board grades. Papermaking Science and Technology. 18. Finland: Fapet Oy. pp. 108–111. ISBN 952-5216-18-7.