公开(公告)号：US20210268539A1

公开(公告)日：2021-09-02

申请号：US17256448

申请日：2019-07-01

Applicant: SAINT-GOBAIN ECOPHON AB

Inventor： Thomas NILSSON ,  Roger LOVDAHL

IPC: B05D1/26 ,  B05C5/02 ,  B05D3/02 ,  B05D3/04

Abstract: A method for coating a tile element includes providing a tile element made of a compressed fibre material having a porosity in the range of 0.92-0.99 and applying a water-based coating material to a side edge surface of the tile element extending between two opposite major surfaces of the tile element. The applying is performed by an applicator head of a continuous vacuum coating apparatus that applies the water-based coating material to the side edge surface of the tile element and removes excess through a vacuum. The water-based coating material is applied at a feeding rate of the tile element relative the applicator head in the range of 25-150 m/min. The water-based coating material forms a coating layer including an outer coating layer and an inner coating layer penetrating the side edge surface. The inner coating layer has penetration depth of at least 100 μm.