摘要:
The invention relates to a moistening system (1) for presses (100) for compressing material cakes (200) mixed with binding agents, preferably continuously operating presses (100), in particular for producing composite panels, preferably engineered wood boards, comprising a first moistening agent application device. The first moistening agent application device (3) comprises a first application roll (7), which can be set from above against the material cake (200) conveyed by a conveyor unit (300) of the press, at least one first dosing roll (9), which can be set against the first application roll (7), and a first moistening agent bath (11). The at least one first dosing roll (9) is immersed in the first moistening agent bath (11) for taking up moistening agent and comprises at least one wiper roll (13), which can be set against each first dosing roll (9) and by means of which the amount of moistening agent taken up by each first dosing roll (9) can be adjusted.
摘要:
The invention relates to a moistening system (1) for presses (100) for compressing material cakes (200) mixed with binding agents, preferably continuously operating presses (100), in particular for producing composite panels, preferably engineered wood boards, comprising a first moistening agent application device. The first moistening agent application device (3) comprises a first application roll (7), which can be set from above against the material cake (200) conveyed by a conveyor unit (300) of the press, at least one first dosing roll (9), which can be set against the first application roll (7), and a first moistening agent bath (11). The at least one first dosing roll (9) is immersed in the first moistening agent bath (11) for taking up moistening agent and comprises at least one wiper roll (13), which can be set against each first dosing roll (9) and by means of which the amount of moistening agent taken up by each first dosing roll (9) can be adjusted.
摘要:
A process and device for separating pressed panels from loading plates in a daylight press. After the panels have been pressed, lifting members engage with the respective panels by frictional, vacuum or mating means. While the above are thus held, the respective loading plates are removed from under the panels. The force with which the lifting members hold the pressed panels being greater than the adhesion between the loading plates and the panels permits the separation.
摘要:
Particle boards are currently prepared by treating the particles (e.g. wood chips) with a binder comprising an organic polyisocyanate and, optionally, a release agent and then subjecting the treated particles to a molding process involving heat and pressure. The resulting particle board will generally release well from the caul plates of the press after forming. However, it has been found that the ease of release is enhanced, particularly where the wood particles in the board are derived from hardwood, by utilizing a metal selected from magnesium and zinc in the metallic surfaces of the caul plates or platens which come into contact with the particle board during the application of heat and pressure.