Method for producing a gypsum plasterboard

A method of preparing bundler dust for producing gypsum plasterboards, comprising the steps:

• mixing a mixture of stucco, water and silicone oil
• forming a cake of the mixture
• drying and grinding the cake in order to prepare the bundler dust.

A use of bundler dust as additive for producing a gypsum plasterboard wherein the amount X of bundler dust in a gypsum slurry is preferably 0.2 g/m2≦X≦10 g/m2, preferably 0.5 g/m2≦X≦4 g/m2, in particular 0.6 g/m2≦X≦2 g/m2 for A13 or 0.4 g/m2≦X≦3 g/m2 for H2 13.

An apparatus for producing a gypsum plasterboard, comprising:

• a device for providing bundler dust obtained from gypsum plasterboard leftovers of a plasterboard trimming using a trimming device,
• means for adding at least a part of the bundler dust to a gypsum slurry for producing the gypsum plasterboard
• a control and/or regulation means in order to control and/or regulate the amount of bundler dust within the gypsum slurry.

A plasterboard produced by the method of any of the claims 1 to 8 and/or under use of bundler dust, e.g. produced via the method of claim 9, and/or by using the apparatus of any of the claims 11 to 14.