Improved coated cartonboard grades

Pankaboard is reintroducing its main cartonboard grades PankaBrite and PankaWhite with clearly improved product features and performance. Over the past year the company has made substantial efforts and investment in order to bring forward the overall product quality of its major packaging grades.

As a result of this determined work Pankaboard is now presenting cartonboard grades which are bulkier, stronger, optically whiter and remarkably improved in terms of sensoric properties. Furthermore, in its production the company combines sustainable forest management with high ecological and environmental values.

Throughout the entire range of PankaBrite (GC2) the thickness of the board has been increased by 30 microns; for PankaWhite (GC1) the increase has been 10 microns.

This has improved the CD bending stiffness of PankaBrite by up to 3 %, bringing the ratio of the board closer to the optimum. This improvement will have a direct impact on ready-made packaging. It helps to protect the contents better than before while guaranteeing that cartons will stay in better shape.

The increase in the product thickness has been achieved by optimising process conditions and improving the quality of the ground-wood pulp which is used for the middle-layer of the boards.

In addition to the increased bulk level development in the quality of the groundwood pulp has enabled remarkable quality improvements in both the visual and surface characteristics of PankaBrite and PankaWhite. More consistent surface smoothness and appearance enables immaculate print reproduction in both offset and flexo printing, says Pankaboard.

Both products are now optically whiter than before, brought considerably toward blueish-white by optimising the surface coating. Extensive work has been carried out to improve the sensoric (odour and taint) properties of both products in order to better meet the requirements of today’s demanding brand-owners and end users.

Pankaboard says it can guarantee a level of 1.5 units for its products in the Robinson scale for odour and taint, making them more suitable and offering greater reliability for use in a wider field of applications.


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