Abstract: The invention relates to a method for producing multi-layered lignocellulose materials having a core and an upper and a lower cover layer, said method comprising the following steps a) mixing the components, b) spreading the mixtures in layers, c) pre-compressing, d) applying a high-frequency electric field e) hot pressing. According to the invention, a mixture of C) 1-15 wt.-% of a binding agent selected from the group consisting of aminoplastic resin and organic isocyanate having at least two isocyanate groups [components C)], F) 0.1-3% alkali-/akaline earth salts, for the cover layers of the lignocellulose particles G) with H) 1-15% of a binding agent selected from the group consisting of aminoplastic resin and an organic isocyanate is mixed.

Abstract: The present invention relates to a process for the batchwise or continuous, preferably continuous production of single-layer lignocellulose-based boards or of multilayer lignocellulose-based boards with a core and with at least one upper and one lower outer layer, comprising the following steps: a) mixing of the components of the individual layer(s), b) layer-by-layer scattering of the mixtures to give a mat, c) compaction after the scattering of the individual layer(s), d) application of a high-frequency electrical field, during and/or after the compaction and thermal hardening of the binder(s), e) then optionally hot pressing, and f) cooling the lignocellulose material, where, in step a), for the core or the single layer, the lignocellulose particles A) [component A)] are mixed with B) from 0 to 25% by weight of expanded plastics particles with bulk density in the range from 10 to 150 kg/m3 [component B)], C) from 1 to 15% by weight of one or more binders selected from the group consisting of aminoplas

Abstract: The present invention relates to a process for the batchwise or continuous, preferably continuous production of single-layer lignocellulose-based boards or of multilayer lignocellulose-based boards with a core and with at least one upper and one lower outer layer, comprising the following steps: a) mixing of the components of the individual layer(s), b) layer-by-layer scattering of the mixtures to give a mat, c) compaction after the scattering of the individual layer(s), d) application of a high-frequency electrical field, during and/or after the compaction and thermal hardening of the binder(s), e) then optionally hot pressing, and f) cooling the lignocellulose material, where, in step a), for the core or the single layer, the lignocellulose particles A) [component A)] are mixed with B) from 0 to 25% by weight of expanded plastics particles with bulk density in the range from 10 to 150 kg/m3 [componeent B)],, C) from 1 to 15% by weight of one or more binders selected from the group consisting of am

Abstract: The present invention relates to a process for the batchwise or continuous, preferably continuous production of multilayer lignocellulose materials with a core and with at least one upper and one lower outer layer, comprising the following steps: a) mixing of the components of the individual layers separately from one another, b) layer-by-layer scattering of the mixtures (for the core layer and for the outer layers) to give a mat, c) precompaction after the scattering of the individual layers, d) application of a high-frequency electrical field before, during and/or after the precompaction, and then e) hot pressing, where, in step a), for the core, the lignocellulose particles A) [component A)] are mixed with B) from 0 to 25% by weight of expanded plastics particles with bulk density in the range from 10 to 150 kg/m3 [component B)], C) from 1 to 15% by weight of one or more binders selected from the group consisting of aminoplastic resin and organic isocyanate having at least two isocyanate groups [comp

Abstract: The invention relates to a binder for producing materials based on wood chips and/or wood fibers. The aim of the invention is to design a binder which is used for producing and gluing materials based on wood chips and/or wood fibers, contains natural protein components, significantly reduces or even eliminates the drawbacks of the prior art, and can be economically produced and used. Said aim is achieved by a binder which is used for materials based on wood chips and/or wood fibers, comprises an aldehyde-based condensation resin and other additives, and is characterized in that the binder comprises a water-soluble reactive additive containing a peptide/amino acid mixture without moieties of water-insoluble and high-viscosity proteins. The invention also relates to a method for producing said binder as well as a molded article.

Abstract: Resin compositions (A) and (B) are described: wherein resin composition (A) comprises a naturally occurring component or derivative thereof comprising protein, an aromatic hydroxyl compound-aldehyde resin and an amino resin, wherein the naturally occurring component or derivative thereof is chemically bound to the aromatic hydroxyl compound-aldehyde resin to form an ncPF resin and the naturally occurring component or derivative thereof is optionally chemically bound to the amino resin; wherein resin composition (B) comprises a condensation product of a naturally occurring component or derivative thereof, an aromatic hydroxyl compound-aldehyde resin and at least 20 wt % of urea based on the total mass of the resin composition, wherein at least 50 wt % of the naturally occurring component or derivative thereof is chemically bound directly or indirectly to the aromatic hydroxyl compound-aldehyde resin (ncPF), and wherein the naturally occurring component or derivative thereof comprises protein.

Abstract: The invention concerns a wood material body, a post-shapeable wood material body and processes for the production of such wood material bodies. The wood material body has one or more layers of strands wetted with a binding agent system. The binding agent system has one or more thermosettingly hardening components and contains a first thermosettingly curing binding agent. The strands wetted with the binding agent system are pressed in a first stage under first temperature and pressure conditions which do not allow complete but only partial curing of the first thermosetting binding agent. The post-shapeable wood material body produced in that way is pressed in a second stage to a predetermined shape under temperature and pressure conditions which allow final curing of the first thermosetting binding agent.