The invention relates to a method for foaming chipboard with tubes including a board body interspersed by tubes and having an upper and a lower face includes the steps of providing a corresponding chipboard with tubes, defining one or more machining regions on the upper and/or lower face of the chipboard with tubes, machining the machining regions. In order to provide a method for foaming chipboard with tubes and a chipboard with tubes having foamed tubes that can be used in a simple, flexible, and cost-effective manner while also being highly robust, a foam-forming material is introduced at least in portions of at least one of the above-mentioned tubes in the machining region in order to locally reduce the difference in density between the tubes and the board body. The invention further relates to the use of a device for foaming tubes of a chipboard with tubes.

A self-supporting composite body comprising a substrate of discrete particles and a network of interconnected mycelia cells extending through and around the discrete particles and bonding the discrete particles together is characterized in being stiff and in having a density of greater than 18 pounds per cubic foot (pcf). The method of making the composite body includes compressing a mass of biocomposite material comprised of discrete particles and a network of interconnected mycelia cells in the presence of moisture into a compressed body having a density in excess of 18 pcf. Compression may take place batch wise in a press or continuously between a pair of movable endless conveyors.

A method of surface sealing a porous fibrous substrate is provided. According to the method, a porous fibrous substrate possessing a moisture content and a surface with pores is provided. A sealant composition is applied to a surface of the porous fibrous substrate and permitted to penetrate the surface pores of the porous fibrous substrate and undergo cure while participating in a foaming reaction with the moisture content to establish a water-resistant polymeric foam sealant impregnated into the porous fibrous substrate. The water-resistant polymeric foam sealant contains a polyurethane and/or polyurea.

A cellulose-based fire resistant insulation and related method for making the same. The insulation includes a plurality of superstructures that establish voids in the insulation. The insulation may be blown in place while the superstructures maintain the void portion of the insulation. The insulation is made with fiber residuals, either alone or in combination with other cellulosic materials. The method of making the insulation includes the steps of treating the cellulosic materials with a fire retardancy chemical or chemicals and creating bonds between the fibers to form the superstructures.

A building panel with a surface layer (1) including a wood veneer, a wood fibre based core (2) and a sub-layer (3) between the surface layer (1) and the core (2). The sub-layer (3) includes wood fibres (4) and a binder (5). The surface layer (1) has surface portions (6) including material from the sub-layer (3). The surface portions (6) including material from the sub-layer (3) extend into the wood veneer.

In a process for the production of a flame retardant and/or strengthened fiberboard, a tailored fiberboard is charged on a processing device at first. Subsequently, a flame retardant and/or strengthening agent is applied to the top side of the fiberboard. The agent applied is sucked or pressed into the fiberboard. This is achieved by generating a pressure difference between the top side and bottom side of the fiberboard.

A method of surface sealing a porous fibrous substrate is provided. According to the method, a porous fibrous substrate possessing a moisture content and a surface with pores is provided. A sealant composition is applied to a surface of the porous fibrous substrate and permitted to penetrate the surface pores of the porous fibrous substrate and undergo cure while participating in a foaming reaction with the moisture content to establish a water-resistant polymeric foam sealant impregnated into the porous fibrous substrate. The water-resistant polymeric foam sealant contains a polyurethane and/or polyurea.

A cellulose-based fire resistant insulation and related method for making the same. The insulation includes a plurality of superstructures that establish voids in the insulation. The insulation may be blown in place while the superstructures maintain the void portion of the insulation. The insulation is made with fiber residuals, either alone or in combination with other cellulosic materials. The method of making the insulation includes the steps of treating the cellulosic materials with a fire retardancy chemical or chemicals and creating bonds between the fibers to form the superstructures.

The present invention relates to a batchwise or continuous process for producing single-layer one multilayer lignocellulosic materials, comprising the process steps of (I) mixing the components of the individual layers, (II) scattering the mixture(s) produced in process step (I) to give a mat, (III) optionally precompacting the scattered mat and (IV) hot-pressing the optionally precompacted mat,
by using, in process step (I), for the core of multilayer lignocellulosic materials or for single-layer lignocellulosic materials, a mixture (component A) comprising a.sub.1) 50% to 99% by weight, preferably 70% to 97% by weight, more preferably 80% to 95% by weight and especially 85% to 92% by weight of organic isocyanate having at least two isocyanate groups or mixtures thereof and a.sub.2) 1% to 50% by weight, preferably 3% to 30% by weight, more preferably 5% to 20% by weight and especially 8% to 15% by weight of organic carboxylic acid, carboxylic anhydride, carbonyl chloride or mixtures thereof and a.sub.3) 0% to 49% by weight, preferably 0% to 10% by weight and more preferably 0% to 5% by weight of auxiliaries or mixtures thereof.

A method for making cellulose-based fire resistant insulation. The insulation includes a plurality of superstructures that establish voids in the insulation. The insulation may be blown in place while the superstructures maintain the void portion of the insulation. The insulation is made with fiber residuals, either alone or in combination with other cellulosic materials. The method of making the insulation includes the steps of treating the cellulosic materials with a fire retardancy chemical or chemicals and creating bonds between the fibers to form the superstructures.