Press and method for producing panel board

B - Operations – Transporting – 27 – N

Patent

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Details

B27N 3/26 (2006.01) B27N 3/24 (2006.01) B30B 5/04 (2006.01)

Patent

CA 2512763

The invention relates to a press (1) for the continuous production of chipboard or fibreboard, in which surface pressure is applied to the chip or fibre mat (2) that has been provided with a binding agent, between a continuous press belt (5) and a press drum (3). A cleaning device (6) can be brought into contact with essentially the entire width of the press belt (5). The cleaning device (6) is located on a continuous support track (7) that can be operated by a drive (8) in a substantially transversal direction to the displacement direction of the press belt (5). The invention also relates to a working method for the continuous production of chipboard or fibreboard, according to which a chip or fibre web that has been provided with a binding agent is subjected to linear pressure between a press drum and a pressure roll in addition to surface pressure between a continuous belt and the press drum in order to create a desired raw thickness. According to said method, a desired gap measurement is set between the press drum and the pressure roller and the linear pressure that defines the raw thickness is adjusted by modifying the material feed of the chip or fibre web.

L'invention concerne une presse (1) destinée à la production continue de panneaux de particules ou de fibres et permettant d'appliquer une pression de surface à des matelas de particules ou fibres (2) dotés d'un liant entre une courroie de pression continue (5) et un tambour de pression (3). Un appareil de nettoyage (6) est mis en contact avec sensiblement toute la largeur de la courroie de pression (5). L'appareil de nettoyage (6) est placé sur une piste support (7) qui peut être entraînée en continu à l'aide d'un mécanisme d'entraînement (8) sensiblement perpendiculairement à la direction de déplacement de la courroie de pression (5). L'invention concerne également un procédé de production continue de bandes de particules ou de fibres, selon lequel on applique sur la bande de particules ou de fibres dotée d'un liant une pression linéaire et une pression de surface entre une bande continue et le tambour de pression pour obtenir une densité brute souhaitée entre un tambour de pression et un rouleau-presseur. Selon l'invention, on règle une mesure de fente souhaitée entre le tambour de pression et le rouleau-presseur puis on règle la pression linéaire déterminant la densité brute par une modification de l'apport en matériau de la bande de particules ou de fibres.

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