Patent ID: 6290809
Filing Date: 2001-09-18
Classification: B27N

Abstract:
An installation for producing boards of wood-based material from lignocellulose and/or cellulose-containing particles mixed with a binder, the installation comprising:a scattering station for scattering the particles to form a mat of pressed stock;a preheating station for preheating the mat, the preheating station including:a microwave heater including at least one generator and at least one reflector, the at least one generator and at least ore reflector focusing on a center of thickness of the mat;a heat tunnel through which the mat runs, the heat tunnel being bounded above and below the mat by respective circulating belts maintaining the thickness of the mat, the belts passing over corresponding upper and lower non-conducting bounding plates; andan infeed device for adjusting spacing between the upper and lower non-conducting bounding plates and thereby setting spacing between the at least one reflector and the at least one generator based on the thickness of the mat; anda press for applying pressure and heat to press and cure the mat.