Three types of raw material are used at Grünewald-Paper:

• Graphic recovered paper (production scrap such as edge trims, hard proofs etc. from printing shops)
• Beverage cartons (production scrap such as edge trims, start-up material from beverage carton manufacturers such as Tetra Pak)
• Pulpsubstitute (recycled material with very high pulp content)

After release, the raw materials in quantities according to the recipe are defibered in a pulper.

We are equipped with three pulpers, each of these optimized for one raw material type of raw materials. Thus the defibring process operates on a very high level of effectiveness and energy efficiency.

Within the defibrizing process the plastic film is separated of the beverage cartons and is directly conveyed from the pulpers into our residual material treatment system. Here, we process the folms to merchantable plastic agglomerates, e.g. for injection moulding.