Laminate wood

Amino resins are manufactured throughout the industrialized world to provide a wide variety of useful products. Adhesives (qv), representing the largest single market, are used to make plywood, chipboard, and sawdust board. Other types are used to make laminated wood beams, parquet flooring, and for furniture assembly (see Wood-BASED composites and laminates). 

The Mosquito was a laminated wood monocoque design that although unusual, was not new. More uniquely, the monocoque shell was fabricated by gluing plywood skins to balsa wood core. This construction foreshadowed the popular honeycomb core/facesheet aluminum and composite designs of later years. Fuselage halves of the Mosquito were formed in closed wooden female tools (tools... 

Phenol-formaldehyde (PF) was the first fully synthetic macromolecular material ( Bakelite , 1907). In a slightly precured condition and provided with fillers, it is, as a moulding powder, available for processing into end-use articles such as bulb fittings, switch housings, coils, laminated wood and foam for thermal insulation. 

Integrity of Glue Joint in Structural Laminated Wood Products for Exterior Use, Test for D 1101... 

D 2559 Specification for Adhesive for Structural Laminated Wood Products for Use... 

D 3024 Specification for Protein Base Adhesive for Structural Laminated Wood... 

Procedure and Properties Wood Laminates Wood Chips... 

The interface between plastic and wood fibres strongly influences the mechanical properties of a plastic/wood fibre composite. A means for evaluating the effectiveness of surface treatment on the wood fibres in the PVC/wood fibre composites is presented that investigated the adhesion between PVC and laminated wood veneers. Wood veneers were first treated with gamma-aminopropyltriethoxysilane, dichlorodiethylsilane, phthalic anhydride, and maleated PP for surface modification. The chemical modification made on the wood surfaces was then characterised by different complementary surface analytical techniques X-ray photoelectron spectroscopy and surface tension measurements. 63 refs. 

The early promise of plastics manufactured from acid- and formaldehyde-treated isolated soy protein was never realized, for economic and functional reasons. Soy flour has seen significant use in glues for plywood and other laminated wood products. These have been displaced by petroleum-based glues that exhibit superior microbial and water resistance. Textile fibers prepared from soy isolate or flour never saw commercial production due to poor wet strength and an unpleasant odor when wet. Soy protein isolate is currently used in paper-coating applications (15, 16). 

This type of system may be used as a bonding agent for marine-grade plywood. Other applications are for laminated wood beams and wood doors. 

While the perforator method also can be used for production control of MDF-boards it is questionable weather the method is feasable for plywood and other laminated wood panels. The two tested UF-bonded plywood boards e.g. although equal perforator values shows large difference in emission. 

Wood is essentially a good fire endurance material because it forms a carbonized layer on the surface during combustion which prevent flame development. The fire endurance is proportional to the cross section dimension of it A glued laminated wood for structural members called gluelam for building purposes make good use of this characteristics. It is difficult to make a door, especially a panel- stile constructed one which has a large thickness dimension. Such a door is usually made thin with a nice profile. Therefore fire retardant wood has been tried for such style wooden fire door. 

Industry Specific Technical Guidance Documents for Estimating Releases Presswood and Laminated Wood Products... 

IV Combustible construction commonly referred to as heavy timber, mill or plank-on-timber Exterior and interior bearing walls are of noncombustible construction and 2 hour rated Interior structural members, floors and roofs are solid or laminated wood and meet minimum dimensional criteria... 

There are 66 known species, 6 of which are important as predators of cultural property. They will infest furniture, houses, laminated wood products, and almost any wooden artifect when provided with a suitable source of nutrition and environment. They are diflScult to detect until they have exited from their chambers. 

During World War II, synthetic rubber and resin-modified phenolics were used to bond aluminum sheets (available only in in. thickness at that time) into billets from which airplane propellers were carved, thus replacing laminated wood, which often shattered on impact with a bullet. Similar adhesives were used to bond rubber to metal in a variety of vibration-damping applications. The most successful widely known product of the new technology was the automotive bonded brake lining first introduced in 1947, and now regarded as a symbol of quality and integrity [12, p. 490]. 

ASTM D-1101, Standard Test Method for Integrity of Glue Joints in Structural Laminated Wood Products for Exterior Use. Two methods are outlined in this standard for using an autoclave vessel to expose the joint alternately to water at... 

Press platens are made from stainless steel or chromium-plated brass and copper. The chromium layer preserves surface quahty longer than does ordinary steel. The MF laminates exhibit a remarkable set of characteristics. Because of their unusual chemical inertness, nonporosity, and nonabsorbance, they resist most substances, such as mild alkalies and acids, alcohols, solvents such as benzene, mineral spirits, natural oils, and greases. No stains are produced on MF surfaces by these substances. In addition to almost unlimited coloring and decorating possibilities, this remarkable resistance has resulted in the extensive use of MF laminated wood-based panel products for tabletops, sales counters, laboratory benches, heavy-duty work areas in factories and homes, wall paneling, and so on. 

In addition to the common applications of PVC in flooring and floor tiles, there are also applications of PU (coatings for flooring), polyamide (PA) (woven carpets and rugs), linoleum (manufactured by oxidising linseed oil mixed with pine resin and wood flour in the form of sheets on jute backing), wood/thermoset composites (thermosets like PE, UF, polyisocyanates used as veneers, in plywood, particleboard, fibreboard, laminates), wood fibre/thermoplastic composites (for industrial flooring with PE). 

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