STRUCTURE MADE AT HEATING AND PRESSURE Russian patent published in 2015 - IPC B32B21/08 B32B38/14 B44C5/04 E04C2/24 E04F15/02 

FIELD: process engineering.

SUBSTANCE: invention relates to fibre-based wear-proof, preferably, floor boards. Construction panel comprises decorative surface layer (5) bonded with the central layer (6). Note here that the former is composed by the mix of fibres (14), preferably coloured pigments (15), binder (19) and wear-proof particles (12), preferably, of aluminium oxide. Note here that the surface layer comprises top and bottom parts. Note also that top part features the binder concentration gradient between the surface layer bottom and top parts. The panel bottom parts contain smaller amount of binder than top parts and can include top parts with smaller amount of binder than bottom parts. Said binder can be a melamine polymer while fibres can be composed by wood fibres. Besides, this invention discloses the fabrication of the construction panel with a simple painted surface. Claimed process includes the steps whereat the ply comprising the mix of fibres, binder, wear-proof particles, preferably of aluminium oxide, and coloured pigments, is applied on the substrate. Note also that said mix yields at heating under pressure. Note that mass ratio between resins and fibres makes smaller than 90%, preferably, less than approx 80%.

EFFECT: perfected design.

9 cl, 2 dwg, 6 ex