Ferro or para magnetic laminates production - with fine coating of magnetic powder, hard fibre powder and (thermosetting) binder hot pressed onto plywood etc

摘要

These laminates esp. boards e.g. laminated wood (plywood), chip-, hard fibre- and other laminated boards are suitable for (pts. of) furniture, wall and ceiling cladding, billboards, blackboards etc., to which ferromagnetic articles (posters etc) can be stuck without tearing, the paper being held by placing magnets over it. there is no. tendency of the paramagnetic surface to peel off when sheet iron is bonded to board with an adhesive, due to differences in the coefft. of thermal expansion. The coating can be applied to the surface as an aq. paste of scattered as dry mixt. and then is hot pressed.