Swedoor Ab

Swedoor Aktiebolag

Goran Persson

Ove Gustavsson

Bernt-Ola Hugosson

Method for manufacturing form-pressed wood fibre panels, for example door skins, and panels manufactured according to the method. The process starts from a workable, mass produced panel displaying high thermal conductance, for example a so-called MDF-board or chip board. The panel is preheated to a condition where the wood fibres and the binding agent which binds the wood fibres form a pliable or stretchable composition though still in continous panel-like condition. This preheated panel is fed to a form-pressing device where the pressure is relatively slowly increased from 0 to approximately 30 kg/cm.sup.2 during continuing heat supply to a temperature of around 150.degree.-200.degree. C. Usually this is attained in connection with door skins after a period of approximately 1,5 minutes. Finally, a form-stable, form-pressed panel is removed from the press.

Method for form-pressing wood fibre panels and form pressed panels, for

A thin, plate-shaped object, especially a door skin, and a method of manufacturing such object, comprising a resin impregnated outer layer arranged directly onto a layer of a binder impregnated wood fine chips layer acting as a forming support for the fibre sheet material. A layer of coarse wood chips acts as a reinforcing and handling characteristics defining layer for the relatively large (some m.sup.2) and relatively thin (2 to 5 millimeteres) door skin.

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Jonkoping, Sweden

Goran Persson