Method for drying wood product and product obtained thereby

B - Operations – Transporting – 27 – N

Patent

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B27N 3/04 (2006.01)

Patent

CA 2740739

A method for forming an engineered wood product from pulpwood, comprising providing a quantity of pulpwood; crushing and scrimming the pulpwood to form a mat; drying in a first drying step the mat in a first pass dryer; applying a resin to the mat; and, drying in a second drying step the mat in a second pass dryer. The drying process controls moisture content using the rate of change between the entering and exiting airflow temperature. The resulting product has a high modulus of elasticity and modulus of rupture.

La présente invention se rapporte à un procédé de formation dun produit de bois modifié à partir de bois à pâte, comprenant lutilisation dune quantité de bois à pâte; lécrasement et la déstructuration du bois à pâte pour former une couche; le séchage, lors dune première étape de séchage, de la couche dans un premier séchoir à passage; lapplication dune résine sur la couche; et le séchage, lors dune seconde étape de séchage, de la couche dans un second séchoir à passage. Le processus de séchage contrôle la teneur en humidité à laide de la vitesse de changement entre les températures découlement dair entrant et sortant. Le produit obtenu présente un module délasticité et un module de rupture élevés.

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