Method for treating the open cut edges of packaging material for the production of cardboard/plastics composite packaging and a packaging material, a composite packaging produced therefrom and a container for receiving packaging material
A method for treating open cut edges of a packaging sleeve (S), blank or web material of a packaging material rolled up into a roll, in particular a composite cardboard/plastics material, by applying or introducing a disinfectant-containing treatment agent to or into the outer region of the cut edges. To provide a particularly resource-efficient composite packaging and a production method required for this purpose, it is proposed that at least some of the treatment agent is not applied directly to the cut edges, but that a load carrier ( 9 ) is loaded, which load carrier absorbs the treatment agent so that an actively sterilizing atmosphere which is created then acts on the open cut edges of the packaging sleeve (S), blank or web material and performs the desired sterilization. The invention also relates to a packaging material, to a combipack produced therefrom and to a container for receiving the packaging material.
1. A packaging material for the production of an aseptic packaging, comprising:
a composite material with at least one layer of pulp/cardboard,
wherein the at least one layer of pulp/cardboard has a first partial region and at least one second partial region, the first partial region having a load of at least 100 colony-forming units per gram of pulp/cardboard (CFU/g),
and the at least one second partial region having a load of at most half the colony-forming units per gram of pulp/cardboard compared to the first partial region.
2. The packaging material according to claim 1 , wherein the first partial region has a load of at least 250 CFU/g.
3. The packaging material according to claim 1 , wherein the at least one layer of pulp/cardboard has proportions of recycled fibres.
4. The packaging material according to claim 1 , wherein, compared to the first partial region, the second partial region has a load of at most a quarter of colony-forming units per gram of pulp/cardboard.
5. The packaging material according to claim 1 , wherein at least one of the second partial regions is delimited by an open cut edge.
6. The packaging material according to claim 1 , further comprising cut edges having peripheral regions, wherein the peripheral regions have a maximum of 10 CFU/g.
7. The packaging material according to claim 1 , wherein the at least one second partial region is formed by a peripheral region.
8. The packaging material according to claim 1 , further comprising a peripheral region, wherein the peripheral region is at least 0.3 mm thick.