The invention discloses a bamboo chip integrated material. The bamboo chip integrated material is formed by a plurality of lengthened bamboo chips which are glued and overlaid; each lengthened bamboo chip is formed by a plurality of bamboo chip units which sequentially and continuously mesh and are butted; sharp teeth and grooves are formed in the two ends in the length direction of the bamboo chip units, wherein the sharp tooth of each bamboo chip unit and the groove of the corresponding bamboo sheet unit are matched to form a meshing butt-joint part, and the meshing butt-joint parts of the adjacent lengthened bamboo chips are arranged in a staggered mode; and each bamboo chip unit has a thickness of 4-12 mm and a width of 15-50 mm.

Disclosed are a hollow artificial log and a manufacturing method thereof. The method includes: splicing and fixing veneers along a length direction and a width direction, respectively, to obtain a spliced veneer; gluing the spliced veneer on one side to obtain a glued veneer; subjecting the glued veneer to winding and forming around a forming die along a length direction of the glued veneer to obtain a formed body; subjecting the formed body to hot-pressing curing in a hot-pressing die to obtain a cured body; and taking out the cured body from the forming die to obtain the hollow artificial log; wherein an adhesive for the gluing comprises a melamine-urea-formaldehyde copolycondensation resin, and the forming die is a cylinder.

Disclosed are a hollow artificial log and a manufacturing method thereof. The method includes: splicing and fixing veneers along a length direction and a width direction, respectively, to obtain a spliced veneer; gluing the spliced veneer on one side to obtain a glued veneer; subjecting the glued veneer to winding and forming around a forming die along a length direction of the glued veneer to obtain a formed body; subjecting the formed body to hot-pressing curing in a hot-pressing die to obtain a cured body; and taking out the cured body from the forming die to obtain the hollow artificial log; wherein an adhesive for the gluing comprises a melamine-urea-formaldehyde copolycondensation resin, and the forming die is a cylinder.

A laminated veneer lumber product made from veneer panels (T) which are glued and pressed to one another in a plurality of layers, at least one layer having a plurality of veneer panels (T) which butt against one another and, at the butt joints, have a respective scarfing zone (Z) in which the thickness of the veneer panel decreases in the direction of an outer periphery (S) of the scarfing zone (Z), the periphery at the same time forming the edge of the veneer panel (T), and which is delimited in the inward direction by an inner periphery (R) from which the veneer panel has its full thickness (d), wherein at least the inner periphery (R) of the scarfing zone (Z), as seen in plan view, runs in an undulating manner.

A laminated veneer lumber product made from veneer panels (T) which are glued and pressed to one another in a plurality of layers, at least one layer having a plurality of veneer panels (T) which butt against one another and, at the butt joints, have a respective scarfing zone (Z) in which the thickness of the veneer panel decreases in the direction of an outer periphery (S) of the scarfing zone (Z), the periphery at the same time forming the edge of the veneer panel (T), and which is delimited in the inward direction by an inner periphery (R) from which the veneer panel has its full thickness (d), wherein at least the inner periphery (R) of the scarfing zone (Z), as seen in plan view, runs in an undulating manner.

A method of and system for producing Class-A fire-protected truss structures constructed from: a plurality of lumber pieces dip-coated with clean fire inhibiting chemical (CFIC) liquid to form a plurality of Class-A fire-protected lumber pieces; and a set of heat-resistant chemical-coated metal truss connector plates for connecting together the plurality of Class-A fire-protected lumber pieces to form a Class-A fire-protected truss structure. The improved Class-A fire-protected truss structures can be used in constructing safer roofing and/or flooring systems in wood-framed buildings, having improved fire performance characteristics.

An automated lumber fabrication factory supporting an automated process for continuously fabricating cross-laminated timber (CLT) products that are automatically dip-coated in a reservoir of clean fire inhibiting chemical (CFIC) liquid, so as to produce Class-A fire-protected CLT products in a highly automated matter.

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.

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.

A method of producing packaged bundles of Class-A fire-protected lumber for use in wood-framed building construction. The method involved maintaining a dipping tank in a lumber factory, containing a water-based clean fire inhibiting chemical (CFPC) liquid at a depth sufficient to cover pieces of raw lumber while being treated during dip-coating operations. Untreated lumber pieces are submerged into the dipping tank, piece by piece, in an automated manner to coat all surfaces of the lumber pieces in CFIC liquid, and then removed from the dipping tank to produce pieces of Class-A fire-protected lumber having a CFIC liquid coating. The Class-A fire-protected lumber pieces are automatically wet stacked, packaged and wrapped into a packaged bundle, and allowed to dry.