The invention relates to a method for producing an OSB, wherein a scattered mat formed by strands adhered in multiple layers is pressed in a hot press to form a panel with a desired thickness, comprising the following steps: a) scanning the surface of an upper side of the mat or of the pressed panel to determine uneven areas and/or faults; b) determining position data of the determined uneven areas and/or faults; c) determining the volumes of the individual uneven areas and/or faults; d) targeted filling of the uneven areas and/or faults with a filling material, based on the determined position data and volumes, wherein e) the filling material is scattered with a scattering device.

A method of and system for producing Class-A fire-protected oriented strand board (OSB) sheets. Each Class-A fire-protected OSB sheet has: a core medium layer made of wood pump, binder and/or adhesive materials; a pair of OSB layers bonded to the core medium layer; a clean fire inhibiting chemical (CFIC) coating on the surface of each OSB layer, made from CFIC liquid applied to the surface by dipping the OSB sheet into the CFIC liquid in a dipping tank, allowing shallow surface absorption into the OSB layers and ends of the core medium layer at atmospheric pressure; and a moisture, fire and UV protection coating spray coated over the CFIC coating to provide protection against moisture, fire and UV radiation from Sunlight, which is quickly dried by passing through a drying tunnel on the production line.

In a lumber factory, an automated laminated veneer lumber (LVL) process supported by a lumber production line employing a cross-cutting and rip-sawing stage, a dip-coating stage, a spray-coating stage, a print-marking stage, and a stacking, packaging and wrapping stage. At the dip-coating stage, cross-cut and rip-sawed LVL product is automatically transported and submerged through a dipping reservoir containing clean fire inhibiting chemical (CFIC) liquid, and then wet-stacked and set aside to dry. Once dried, the dip-coated LVL products are returned to the production line and sprayed coated with a moisture, fire and UV protective coating at the spray-coating stage, and then passed through a drying tunnel for quick drying of the spray-coating to produce Class-A fire-protected LVL products. The Class-A fire-protected LVL products are stacked, packaged and wrapped at the stacking, packaging and wrapping stage into a package of Class-A fire-protected LVL products, ready for shipping.

This method for manufacturing a high-density strand board enables high-density strand boards to be formed by using about the same press pressure as press pressures required to form strand boards with common densities, so that the high-density strand boards can be produced without using special facilities and equipment. A pretreatment process P2 is performed on strands 5 before pressing. The pretreatment process P2 is comprised of a first treatment process P2a and a subsequent second treatment process P2b. At least one of beating, high-frequency treatment, high-temperature high-pressure treatment, high-water pressure treatment, repeated deaeration and dehydration treatment, and chemical treatment is performed in the first treatment process P2a, and roll pressing or flat press pressing is performed in the second treatment process P2b. A strand board B with a density of 750 to 950 kg/m.sup.3 is formed by using a press pressure of 4 N/mm.sup.2 or less.

A manufactured hemp product comprising a plurality of adhesively bonded and pressed hemp strands where the majority of the hemp strands are of generally the same length and comprise a naturally-occurring, generally elongate internal structure extending generally along one axis of the strand that has been at least partially laterally broken and at least permeated by an adhesive. The hemp strands are oriented roughly parallel to one another along their length. The manufactured hemp product comprises an amount of adhesive between about 5% to about 49% by weight. The manufactured hemp product can be used as a wood substitute in terms of appearance and performance. The manufactured hemp products may have aesthetic and structural qualities that are suitable for high traffic, high visibility applications such as boards, blocks, beams, panels, flooring, furniture, building materials and other wood products.

A process for treating wood strands suitable for producing OSBs includes treating the wood strands in water at a temperature in the range from 50 C. to 100 C. The present invention likewise relates to a process for producing wood-based OSBs, in particular wood-based OSBs having reduced emission of volatile organic compounds (VOCs), including: a) production of wood strands from suitable timbers; b) treatment of at least part of the wood strands with water; c) drying of the wood strands which have been treated with the water; d) coating of the wood strands which have been treated with water and dried and coating of wood strands which have not been treated with water with at least one binder; e) scattering of the glue-coated wood strands on a conveyor belt; and f) pressing of the glue-coated wood strands to give a wood-based OSB.

The present invention relates to a method of producing a ribbon (12) comprising bamboo fibers (14), the method comprising: positioning the fibers (14) on a conveyor (16) and conveying the fibers in a transport direction, interconnecting the fibers (14) by: covering the fibers with thread (42) and/or particles of a sticky material with at least one web forming device (40) which is positioned above and/or below the conveyor and which ejects thread and/or particles, wherein the formed thread and/or particles attaches to the fibers and forms a web (45) which interconnects the fibers in order to form the ribbon, and/or stitching the fibres together with at least one stitching device (40B) which is configured to stitch the individual fibers together in order to form the ribbon.

An improved engineered wood product, and related methods, with improved actual and apparent surface quality. The product includes a high basis weight fines layer overlaying a strand matrix base layer, with one or more overlay layers. The fines layer may be placed between the overlay layers, if multiple overlays are present. The configuration of fines layer and overlay layer(s) minimizes the presence of sub-surface imperfections that may result in visible telegraphing on the exposed surface. A light pattern or texture may be embossed on the outermost overlay layer during the pressing process. Additionally, a paint primer layer or coating with added aggregate may be applied to help camouflage inherent sub-surface defects.

Wood-based composites, compositions for use in wood-based composites, and associated systems and methods are provided herein. Certain compositions include a mixture of alpha olefins and esters and demonstrate unique water repellant properties. The compositions may be incorporated in wood-based composites in place of traditional petroleum-based slack waxes.

An improved blending apparatus for manufactured wood products with a rotating blending drum or cylinder with a pattern of alternating flights of different configurations extending from the interior of the drum. The flights lift the strands as the drum rotates to different heights before the strands free-fall back to the bottom of the drum. One flight is shorter, and may be trapezoidal in cross-section. The second flight is taller, and may have a bull-nose configuration with substantially vertical sides. During operation, the design of the bull-nose flight tends to hold more strands and to carry them closer to the top of the drum before the strands drop and fall. In contrast, the shorter height and angled sides of the trapezoidal flight tends to hold fewer strands and to not carry them as high along the side before strands drop and fall. The alternating pattern causes a more consistent and dispersed fall of strands as the drum rotates, resulting in a significantly larger and more consistent amount of the sprayed adhesives and waxes being applied to the strands, and not passing through gaps to build up on the drum wall.