103 results about "Wood glue" patented technology

The oxalaldehyde free fiber plate features in the making crushing of herb haulm for antiseptic treatment and air baking, applicable for water resistant wood glue making for glue application, air current steam and dehydration, air current spread and cold press to make blanks and heat forming. It replaces the wood by stalks and other material, reduces energy consumption and environment sacrifices, avoiding free formaldehyde emission, effectively solving the bubble and mold fall off issue.

The invention relates to an wood-gluing system enabling the continuous production of glued pieces of lumber for panels and the like. The system includes a deck, a horizontal displacement system for advancing lumber across the deck, a braking system, a one-way clamping system and an upstream pressure system. The system may be used in conjunction with finger-jointing processes or with single pieces of lumber and may be used for the production of both furniture grade and construction grade wood products.

The invention relates to a construction method for combined type fixed and integral lifting of an elevator shaft stereotyped operation platform. The platform consists of bearing diagonal rods, limit gear rods, horizontal joists, operation-platform vertical rods, transverse horizontal rods, longitudinal horizontal rods, square wood blocks, wood glue boards, steel pipes and high-strength bolts, wherein one end of each bearing diagonal rod is supported on a shear wall in an angle of 45 degrees, and the other end of the bearing diagonal rod is supported on a floor at the exit of an elevator compartment; the limit gear rods and the horizontal joists are arranged between the bearing diagonal rods; the operation-platform vertical rods are mounted on the bearing diagonal rods; the transverse horizontal rods and the longitudinal horizontal rods are in combined connection and fixed together with the operation-platform vertical rods; wood glue boards are laid on the corresponding transverse horizontal rods and longitudinal horizontal rods; each steel pipe penetrates through shear-wall reserved holes and is inserted in the corresponding transverse horizontal rod, and the steel pipe and the transverse horizontal rod are fixed together. The construction method mainly comprises the following steps: setting up the bottom bearing diagonal rods; mounting the limit gear rods; mounting the horizontal joists, setting up the operation-platform vertical rods; setting up a lower operation platform; setting up an upper operation platform; and overall lifting the operation platform and the like.

A non-power operated clamping apparatus is disclosed which is made up of a top section, middle section, and bottom section. There are first direction clamps located on the left side and right side of the middle section and the bottom section is positioned within the first direction clamps and the sides of the middle section. There are second direction clamps between the bottom section and middle section and between the top section and middle section. The workpiece, comprising members of wood glued edge-to-edge, is placed between the top section and middle section and subjected to a first direction compressive force and a second direction compressive force perpendicular to the first direction compressive force.

The invention discloses a bamboo-based flat pallet used for a logistics operation and a production method thereof. The bamboo-based flat pallet used for the logistics operation comprises a support plate and a cushion block, wherein the support plate comprises an upper cover layer and a lower cover which are made of bamboo plywood; a plurality of supporting bamboo rings are arranged between the upper cover plate and the lower plate; an edge banding is arranged between the edges of the upper cover plate and the lower cover plate. The upper cover plate, the lower cover plate and the supporting bamboo rings are glued by bamboo-wood glue and formed into a plate by hot pressing; thus, the materials are saved, the cost is reduced and the mechanical property is good. The bamboo-based flat pallet used for the logistics operation, provided by the invention, can replace a wood pallet to relieve the growing logistics pressure due to the ambient pressure and the lack of wood.

The invention discloses a wood bonding glue, which comprises the following components in parts by weight: 8 parts of cyclohexanone, 20 parts of urethane acrylate, 6 parts of biphenyl, 10 parts of azodicarbonamide, 2 parts of zinc oxide, 6 parts of benzoyl peroxide, 15 parts of glyceryl methacrylate gel, 16 parts of polyisocyanate, 30 parts of epoxy resin, 7 parts of methyl methacrylate, 6 parts of benzoyl peroxide, difluorotetrachloroethane 18 parts, 6 parts of butyl acetate. The wood bonding glue provided by the invention has wide sources of raw materials, low price, environment-friendly glue, less pollutants, good bonding effect, fast drying and stable quality.

The invention discloses a glue storage type plywood gluing system. The system comprises a gluing box, a material pushing conveying belt, an upper glue wheel and a lower glue wheel; the material pushing conveying belt is located outside the gluing box; the upper glue wheel and the lower glue wheel are located in the gluing box and are grouped; a coaxial fixed eccentric cylinder is arranged in the upper glue wheel; a corresponding upper glue storage box is arranged on one side of the upper glue wheel; and a glue feeding roller is arranged inside the upper glue storage box. According to the gluestorage type plywood gluing system, an existing gluing roller surface gluing mode is changed, gluing is conducted through glue storage in the glue wheels and the centrifugal force effect, gluing is efficient, meanwhile, gluing power comes from the moving force of a plywood, power sharing is achieved, the gluing and force applying steps can be effectively saved, and energy consumed by gluing is saved.

A method for extending resin-based wood glues, particularly condensation polymer resin-based glues, comprises the steps of (i) providing an aqueous extender composition comprising 20% to 50% by weight of alkali metal silicate and 1 % to 25% by weight of polyhydric alcohol, preferably a sugar such as sucrose, (ii) providing a solution comprising a resin and (iii) blending the aqueous extender and the solution together to form a glue. The extended glues are suitable for preparing water resistant processed wooden panels such as plywood or chipboard with reduced need for resin. The extended glues do not set excessively rapidly, allowing time for the processing of the wood composites.

The invention discloses a method for producing a composite wood board by using waste wood as a base material. The method comprises the steps of wood dust and flour preparation, material blending, pressure casting for forming, and cooling, wherein in the step of material blending, the flowing material in mass percentage are added: 57-74% of wood dust and flour, 5-10% of carbon fibers, 18-25% of a flame retardant, 1-3% of an ultraviolet light absorber and 2-5% wood glue powder; the flame retardant is nano magnesium hydroxide of which the surface is subjected to activating treatment with a silane coupling agent. The method has the advantages of being simple in process, efficient, environment-friendly and the like, and uses waste wood as the main raw material, so that the production cost is reduced; obtained products have the advantages of being high in strength, wear-resistant, flame-retardant, good in plasticity, excellent in dimensional stability, and the like, can replace wood to be used in the fields of architectural decoration, furniture and the like, and are durable.

The invention relates to the field of building materials, in particular to a preparation method of a high-strength environment-friendly wood plywood. The preparation method comprises the steps of uniformly mixing an adhesive, dried wood flour, reinforced fibers and a flame retardant in parts by weight to prepare the single-layer wood plywood; carrying out corona treatment on the single-layer wood plywood, and compositing multiple layers of wood plywood slabs; and then carrying out heating treatment. The wood plywood prepared by the preparation method is good in mechanical property, the tensile strength is greater than or equal to 35.2 MPa, the bending strength is greater than or equal to 63.3 MPa, the flexural modulus is greater than or equal to 4810 MPa, the impact strength is greater than or equal to 9.3 kJ / m<2>, ammonia odor is avoided, the formaldehyde emission is less than or equal to 0.5 mg / L, and the wood plywood meets national standards, can be used as an indoor plate, and is more environmentally friendly and healthier.

Distiller's Grain (DG) based bio-adhesives consisting of DG biomass, crosslinking agents, and fillers are described as substitutes for formaldehyde based wood glue for making wood panels. Algal bio-adhesives consisting of algal biomass, crosslinking agents, and fillers are described as substitutes for formaldehyde based glue for making wood panels. Processes for preparing such DG based bio-adhesives and algal bio-adhesives are provided, comprising the steps of: combining DG biomass or algal material with a cross-linking agent and inorganic fillers to form a blend; micronization or homogenization of the blend to obtain powdery material; and mixing the powdery material with additional water to form a bio-adhesive.