Planar material and method for the production thereof
AssigneeSWISS KRONO Tec AG
InventorsRoger Braun, Joachim Hasch, Volker Schwind, Norbert Kalwa
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Abstract
The invention relates to a planar material, comprising lignocellulose fibers and binding agents. In order to provide a planar material that using fibers has reduced swelling, it is provided that the proportion of the binding agent has more than 50 wt % of the planar material. The invention also comprises a method for producing the planar material.
Claims20
A method for producing a planar material, comprising lignocellulose fibers (5) and a binder comprising a binding agent and a plasticizing additive, wherein the proportion of the binding agent with the plasticizing additive is more than 50 wt % of the planar material (1), wherein the plasticizing additive is not used as the main component of the binder, comprising the steps of:
- providing lignocellulose fibers (5);
- providing the binding agent, wherein the binding agent has melamine resin, formaldehyde resin, phenol resin, methylene diphenylisocyanate (MDI), also in emulsified form as eMDI, polymeric diphenylmethane diisocyanate (PDMI), polyurethane, or mixtures of the aforementioned binding agents as well as the plasticizing additive;
- applying the binding agent with the plasticizing additive to the fibers (5), wherein the plasticizing additive is applied with the binding agent to the fibers,
- forming a fiber cake from the fibers provided with the binding agent and with the plasticizing additive;
- pressing the fiber cake in a press while curing the binding agent to create a planar material (1) having a single layer from an upper face (2) to a lower face (3) of the planar material, wherein the plasticizing additive and the binding agent are used in a ratio of 0.2:1 to 0.01:1.
Dependencies are inferred from the claim text.