1.Recycling process :
Some interesting results have recently been obtained: With the use of fractionation in recycling lines, it is possible to improve pulp cleanliness and to increase pulp mechanical strength. By applying specific treatments on the various fractions obtained by conventional fractionation or washing, longest fraction pulps can be improved by HC-refining. Shortest fraction pulps can be partially cleared of of mineral fillers detrimental to pulp properties (hydrophobic elements) by a combination of washing and flotation. In addition, flotation in OCC recycling lines will be investigated particularly for the removal of dead fines and stickies, in conjunction with the reduction of the filler content. Mechanical properties are of great importance. They must be restored and developed, both those of the fibres and those of the end products (corrugated boxes).

2.Improvement of pulp quality from recycled packaging papers and boards :
Microbiological and chemical decontaminations are important in reinforcing and developing the use of recycled fibres. Microbiological decontamination can be achieved by using hydrogen peroxide in size-press coating colours or by spraying it in the wet end of the papermachine. Innovative solutions combining microbiological and chemical decontamination are under investigation.

Improvement of corrugated box characteristics will be researched through the control of recovered fibre pulp and paper manufacturing parameters.