Peel ply has been well-known to aircraft construction for many years. The screen fabric produced using nylon is applied as a final layer to the epoxide or polyester resin laminate. Following the increase in hardness or respectively before bonding the parts, the peel ply is peeled off („torn off”). This results in an overall rough, bondable upper surface free from lubricating film. Suitable for epoxide resins, vinylester resins and polyester resins.