Ytbelagt trämaterial, dess tillverkningsförfarande samt användning

摘要

The invention relates to coated wood material, its manufacturing method and its use. To enable the use of pitch-containing knotty conifer wood material, the material is provided with a fibre-based insulating film, which is impervious to pitch and impregnated with amino resin, and which is fastened by hot curing onto the surface of the material. Amino resin can be melamine-formaldehyde resin or urea- formaldehyde resin or their mixture and mixed with a softener. The insulating film can operate as a single-layer coating the surface of which can be painted with water-dilutable paint or be varnished. Alternatively, it is possible to form a double- layer coating in which on top of the insulating film impregnated with amino resin is fastened a painting base impregnated with amino resin having lower resin content.