A waterproof wax, a waterproof treatment method for a splicing part of floorboards and a splice floorboard, relating to floorboards. The waterproof wax includes 60-85% by weight of a first paraffin, 1-15% by weight of a silicone resin, 10-20% by weight of ethylene glycol dimethacrylate, 2-5% by weight of amino silicone oil and 0.1-1% by weight of alkenyl succinate.

A waterproof wax, a waterproof treatment method for a splicing part of floorboards and a splice floorboard, relating to floorboards. The waterproof wax includes 60-85% by weight of a first paraffin, 1-15% by weight of a silicone resin, 10-20% by weight of ethylene glycol dimethacrylate, 2-5% by weight of amino silicone oil and 0.1-1% by weight of alkenyl succinate.

A wood or engineered wood structural panel, such as, but not limited to, OSB (“oriented strand board”) or plywood, that is both fire-resistant and water resistant. The panel is factory-coated with a product that provides fire resistance. The treatment gives it a Fire-Resistant (FR) performance (for use in a one- or two-hour rated assembly). The panel also is overlaid or coated in a factory setting with a weather/water resistive barrier (WRB). The structural panel thus combines a fire-resistant structural sheathing and WRB product in one integrated panel produced at a factory prior for installation at a job site.

A sugar-based binder composition for manufacturing a composite product, notably a wood board, comprises at least one further particulate additive selected from the group consisting of:—particulate additive(s) having a BET specific surface area which is ≥50 m.sup.2/g;—amorphous silica particles;—fumed silica particles; and—untreated fumed silica particles.

The invention relates to an insulated panel, in particular a wall panel or roof panel, including a foamed core layer and a cover layer affixed to the foamed core layer. The invention also relates to an insulating covering, in particular a wall covering or floor covering, including a plurality said insulated panels.

Provided is a palp fibrous accumulated sheet including: a liquid permeable pulp fibrous accumulated layer containing a crushed pulp or base-fibers mainly including a crushed pulp, and a binder; and a plurality of fiber crimped parts formed by compression and pressurization, the fiber crimped parts being formed so that crushed pulp fibers each straddling the adjacent fiber crimped parts are present.

A process for recycling lignocellulosic fibers from a fiberboard (100) comprising compressed lignocellulosic fibers bonded together by a binding agent. The process comprises the steps of: —disintegrating (101) the fiberboard (100) to provide fiberboard pieces (110); —steaming (111) the fiberboard pieces (110) to decompress and release the lignocellulosic fibers by hydrating them, as well as hydrolyzing the binding agent; —releasing the overpressure; —removing excess water vapor to provide portions (120) comprising released lignocellulosic fibers; and—separating (121) the lignocellulosic fibers in the portions (120) comprising released lignocellulosic fibers to provide recycled lignocellulosic fibers (130).

A process for recycling lignocellulosic fibers from a fiberboard (100) comprising compressed lignocellulosic fibers bonded together by a binding agent. The process comprises the steps of: —disintegrating (101) the fiberboard (100) to provide fiberboard pieces (110); —steaming (111) the fiberboard pieces (110) to decompress and release the lignocellulosic fibers by hydrating them, as well as hydrolyzing the binding agent; —releasing the overpressure; —removing excess water vapor to provide portions (120) comprising released lignocellulosic fibers; and—separating (121) the lignocellulosic fibers in the portions (120) comprising released lignocellulosic fibers to provide recycled lignocellulosic fibers (130).

The present invention relates to a process for preparing a bonding resin, wherein lignin is provided in the form of a solution in ammonia and/or an organic base and mixed with one or more crosslinkers and optionally one or more additives. The bonding resin is useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards. The bonding resin is also useful for example in composites, molding compounds and foundry applications.

Processes and material compositions are disclosed for applying polymer additive manufacturing to producing press dies, such as for sheet metal forming. As disclosed in various embodiments, material compositions comprise a thermoplastic, a first filler having low aspect ratio particles and a second filler having high aspect ratio. In at least one embodiment, composites according to the disclosed teachings have a compressive modulus greater than 3500 MPa and a compressive strength greater than 70 MPa, such that the composites have sufficient mechanical properties for press tooling and are amenable to extrusion-type additive manufacturing processes. In at least one embodiment, the use of the disclosed composites with additive manufacturing enables reduced overall mass of tooling by inclusion of voids inside the die.