Abstract

The present invention relates to a multi-layer packaging paper, in particular testliner for corrugated cardboard production, having a mass per unit area as per DIN EN ISO 536 of 100 to 200 g/m2, having a base paper which has a base layer with a first substance mixture with pulps of groups 1 and 4 as per CEN European Standard EN 643:2001, a top layer with a second substance mixture with pulps of groups 2 and 3 as per CEN European Standard EN 643:2001 and filler material and de-inked scrap paper material or CTMP for producing a base paper with a specific rupture pressure as per ISO 2759 of 1.85 to 2.40 kPa * m2/g and a specific SCTquer as per ISO 9895 of 12 to 18 kNm / kg and a Scott Bond as per Tappi 569 of 160 to 320 J/m2 and a D65 brightness as per ISO 2470-2 of 68 to 85% on the top side of the top layer, characterized in that the base paper has, at least on the top side of the top layer, a film press pigmentation with a coat weight of 3 to 10 g/m2, while having a first coat colour composition with a solid matter content of 30 to 70% and a synthetic binding agent fraction of 5 to 30% in relation to a pigment fraction, for producing the multi-layer packaging paper with a Bendtsen air permeability as per ISO 5636-3 of 50 to 150 ml/min, a Bendtsen roughness as per ISO 8791-2 of 150 to 500 ml/min and a D65 brightness as per ISO 2470-2 of 68 to 85%.

IPC Classes  ?

• B32B 29/06 - Layered products essentially comprising paper or cardboard specially treated, e.g. surfaced, parchmentised
• D21H 19/80 - Paper comprising more than one coating
• D21H 27/30 - Multi-ply
• D21H 27/42 - Multi-ply comprising dry-laid paper