Patent ID: 8715780
Filing Date: 2014-05-06
Classification: B05C,B05D,H05K

Abstract:
1. A method for producing a plastic layer having a layer thickness of less than 200 μm on an upper side of a copper foil substrate, the method comprising the following steps: applying a plastic powder to the upper side of the copper foil substrate by means of a powder scattering device, said plastic powder having a particle size distribution with a D50 value in a range from 10 to 100 μm, then cleaning the underside of the copper foil substrate to remove any plastic powder therefrom, wherein cleaning includes a first cleaning step using suction or a brush followed by a second cleaning step using an adhesive roller, then melting the applied plastic powder in a furnace, as a result of which the plastic layer is formed on the substrate, and cooling the substrate, wherein the substrate is transported continuously from method step to method step.