A process or method for manufacturing a fire-retardant treated wood composite board or panel, such as oriented-strand board, with a low melting point fire retardant (FR) material, such as boric acid, while the press is operating at typical press temperatures above the FR material melting point. An intervening overlay is applied to the top surface of the mat on the forming line, after the use or application of any FR material within or on the mat, prior to entry into the press. The intervening overlay covers the top surface so as to prevent the melting fire retardant material from contacting the press platen(s). After pressing, the intervening overlay may be removed from the top surface by sanding, buffing, or other methods. The intervening overlay also may be sized so as to extend over one or more edges of the underlying panel, for ease of removal post-process.

Provided are an inorganic biomass material non-combustible board and a preparation method thereof, relating to the field of artificial boards. The method includes: mixing and stirring an inorganic binder component, water, and a stabilizer to obtain an inorganic adhesive; mixing and dispersing the inorganic adhesive with a biomass material and a modifier to obtain a mixed slurry; mixing the mixed slurry with an inorganic filler and additives to obtain a mixed raw material; spreading the mixed raw material into a mold to obtain a preformed product; curing and demolding the preformed product to obtain a green body; aging and drying the green body to obtain a semi-finished board; and cutting and sanding the semi-finished board to obtain the inorganic biomass material non-combustible board. Employing a composite process combining biomass materials with inorganic materials, the method enhances board toughness, reduces its brittleness, extends its service life, and broadens its application scope.

Provided are an inorganic biomass material non-combustible board and a preparation method thereof, relating to the field of artificial boards. The method includes: mixing and stirring an inorganic binder component, water, and a stabilizer to obtain an inorganic adhesive; mixing and dispersing the inorganic adhesive with a biomass material and a modifier to obtain a mixed slurry; mixing the mixed slurry with an inorganic filler and additives to obtain a mixed raw material; spreading the mixed raw material into a mold to obtain a preformed product; curing and demolding the preformed product to obtain a green body; aging and drying the green body to obtain a semi-finished board; and cutting and sanding the semi-finished board to obtain the inorganic biomass material non-combustible board. Employing a composite process combining biomass materials with inorganic materials, the method enhances board toughness, reduces its brittleness, extends its service life, and broadens its application scope.

The disclosure relates to a method for producing OSB panels which includes: producing coarse chips, applying a flame-retardant solution to the coarse chips, subsequently removing flame-retardant solution from the coarse chips, in particular by applying a pressure difference, resulting in coarse chips containing flame retardant, then applying glue to the coarse chips containing flame retardant, thus obtaining glued coarse chips, and pressing the coarse chips, thus obtaining the OSB panel.

The disclosure relates to a method for producing OSB panels which includes: producing coarse chips, applying a flame-retardant solution to the coarse chips, subsequently removing flame-retardant solution from the coarse chips, in particular by applying a pressure difference, resulting in coarse chips containing flame retardant, then applying glue to the coarse chips containing flame retardant, thus obtaining glued coarse chips, and pressing the coarse chips, thus obtaining the OSB panel.

A manufactured wood panel with integrated fire-resistant (FR) inorganic material, and methods of production. The manufactured wood panel may be structural or non-structural, and strand-based, such as, but not limited to, oriented strand board (OSB). Noncombustible FR inorganic material, including but not limited to, mineral wool, sand, rock, and the like, is added to and mixed with the wood strands before, during, and/or after the blending process on the production line (i.e., mat forming line). The mats formed from the mixed strands and inorganic material are then subjected to heat and pressure in a press. The panel may have multiple strand layers, with all or only some of the strand layers comprising the noncombustible material. The percentage of noncombustible material may be the same in all mixed layers, or may vary between layers.

An engineered wood based siding, cladding or panel with a microstrand interface layer (MIL) applied to the top of the main strand matrix layers to minimize telegraphing, add rigidity and strength, and provide an improved surface appearance. The MIL comprises microstrands applied to the surface of the strand matrix or mat during production, prior to deposition of a fines layer. The MIL prevents the loss of fines into the strand matrix, and helps prevent or eliminate strand telegraphing.

An improved oriented strand board (OSB) panel or board with higher resin loading and control of the density to provide improved and/or enhanced properties, and methods of manufacturing such an improved OSB panel or board. In several exemplary embodiments, as described in greater detail below, resin loading of the strands used for OSB formation is increased in conjunction with the density of the manufactured OSB board being controlled to a certain density or within certain density ranges for use with decorative panels, exterior cladding or siding panels, engineered wood flooring, and/or exterior structural wall or roofing panels. Both increased resin-loading and controlled density increases are required for overall core performance increases, and the surprisingly enhanced performance characteristics outweigh the increased cost of production.

Composite cellulosic products and processes for making same. In some embodiments, the composite cellulosic product can include a plurality of cellulosic substrates and an at least partially cured binder. Prior to curing, the binder can include a mixture formed by combining magnesium oxide, water, and magnesium chloride. A weight ratio of the magnesium oxide to the magnesium chloride in the binder can be at least 2.2:1 to 8.5:1.

The invention relates to a method for manufacturing an insulating board based on cereal straw, characterised in that it comprises the steps of: a) mechanically grinding and screening the straw to obtain a defibrated straw, the strands of which have an average length of between 3 mm and 11 mm and an average diameter of between 0.5 mm and 2.5 mm, b) using a mixer and mixing the defibrated straw with a binder material in a proportion by weight of between 3% and 25%, preferably between 4% and 10%, c) injecting compressed air into the mixture to homogenise said mixture, d) heating the insulating board and calibrating it lengthwise and widthwise, e) calibrating the thickness of the material forming the insulating board, f) heating the insulating board to a temperature of at least 90 C., preferably between 110 C. and 150 C., across the entire thickness of said insulating board and for a period of at least 3 minutes, g) cooling the insulating board to ambient temperature, and h) packaging the insulating board.