摘要:
A method for assembling massive parts that are useful for building wooden chalets or houses including timbers that are built in two by two, three by three, or four by four, connected through dovetailing, and, optionally, by gluing them together, to obtain massive laminated timber blocks. These massive laminated timber blocks can be filled to form panels. This method improves a process for forming massive wood parts, where assembling the timbers in the form of dove-tails allows the production of several depths without any limitation of length, since the additions are achieved according to an arrangement in quincunx.
摘要:
A method of drying sticks, a related apparatus, resultant product and its uses where the method involves presenting a plurality of sticks in parallel as a single layer, pressing each stick with a bank of pressing members on and/or into at least one face of the sticks, each with plurality of protuberances, thereby to constrain the sticks against crook, and drying the sticks when so constrained. Preferably each bank of pressing members is an underside of a frame or lattice of a stack of such frames or lattices able to receive such a single layer of sticks between adjacent overlying/underlying frames or lattices, the protuberances preferably being only downwardly directed.
摘要:
A method of manufacturing laminated bamboo sliver lumber comprises steps of: preparing bamboo slivers; performing moth-proofing, mildew-proofing, and antiseptic treatments to the bamboo slivers and then drying the bamboo slivers to a moisture content of about 6-15%; machining each dried bamboo sliver to a thickness of about 0.5-3.5 mm (0.02-0.14 in) and a width of about 5-22 mm (0.20-0.87 in) and then dehumidifying the machined bamboo slivers to a moisture content of about 3-10%; applying a glue to the bamboo slivers by glue-coating or “immerging” process, in which a ratio of the glue to an absolute dry weight of the bamboo slivers is about 3-16%; and arranging the glued bamboo slivers with their “width” direction consistent with the “vertical” direction and then pressing the arranged bamboo slivers and curing the glue under a “side” pressure of about 3-15 MPa (0.44-2.18 ksi) and a “top” pressure of about 1-6 MPa (0.15-0.87 ksi) so as to form the laminated bamboo sliver lumber.
摘要:
An apparently seamless lengthened bamboo sheet is formed by lengthening a plurality of bamboo strips or blanks and assembling a plurality of lengthened bamboo strips or blanks together. A slot is formed on at least one end of the bamboo strips or blanks in direction of length, and a tenon corresponding to the slot is formed on the same end; the tenon on one bamboo strip or blank is embedded into the slot on another bamboo strip or blank. The tenon and slot are mutually matched and the two bamboo strips or blanks are engaged to each other. A method to manufacture is the apparently seamless lengthened bamboo sheet includes: forming a slot and a tenon on the end of bamboo strips or blanks; embedding a tenon at one end of one bamboo strip or blank into a slot on one end of another bamboo strip or blank; assembling and gluing a plurality of lengthened bamboo strips or blanks in direction of width or thickness; forming the bamboo sheet by a common process including pressing. The slot-tenon connecting structure of the present invention makes the seams on the surface unobvious and enhances the connection strength.
摘要:
A method and a system for glulams fabrication, comprising obtaining wood pieces of a target length from raw materials; and assembling them into structural timbers of a target thickness in a continuous line, whereby moisture content, end joints, mixing and applying of adhesives, glue line pressure and clamping time are continuously controlled.
摘要:
A laminate of laminae of uniform rectangular cross-sections or depths and lengths arranged randomly or otherwise in the laminate, such laminae having been derived from a feedstock comprising a population of logs (single or multigrade) wherein the population of laminae comprises all of the laminae that can be derived from the population of logs (exclusive only of laminae or material for laminae that are not of acceptable rectangular cross-section and/or length), and where each cross-section of each lamina represents a maximum of one thirtieth of the log cross-section, or the thickness of each lamina represents a maximum of one fifteenth of the small end log diameter.
摘要:
A laminate of laminae of uniform rectangular cross-sections or depths and lengths arranged randomly or otherwise in the laminate, such laminae having been derived from a feedstock comprising a population of logs (single or multigrade) wherein the population of laminae comprises all of the laminae that can be derived from the population of logs (exclusive only of laminae or material for laminae that are not of acceptable rectangular cross-section and/or length), and where each cross-section of each lamina represents a maximum of one thirtieth of the log cross-section, or the thickness of each lamina represents a maximum of one fifteenth of the small end log diameter.
摘要:
A billet of veneer sheets is constructed using parallel sheet conveying conveyors for simultaneous building of partial fans that are combined and transferred to the trailing end of the billet. Encoders, detectors and computer controls control the conveyors for precise placement of the sheets in building a fan and precision placement of the fan to the trailing end of the billet.
摘要:
An apparatus and method for simultaneously pressing together longitudinally a plurality of individual strips of wood, each strip being provided with a finger joint at each end. The strips are jointed end to end in a number of rows to form a floorboard. The apparatus includes a mechanism for simultaneously applying longitudinal pressure to each of the rows of wood strips during the curing process. The resulting floorboard is mechanically improved, has greater protection against humidity and increases the fatigue resistance of the floorboard, which can be used for trailer floors or the like.
摘要:
The present invention concerns a method that is timesaving, more economical and facilitates the handling and processing of short solid wood planks. Tongue-and-groove joints are machined on the short sides of the short green planks enabling their releasable tight assembly in rows for the seasoning process in the kiln dryer. This temporary attachment between adjacent planks prevents exposition of the short sides to the drying air thus avoiding the usual end grain checking on the latter during kiln drying, and eliminates the need of performing any subsequent machining and trimming steps after the expensive kiln drying step. This process then also improves the saving opportunities by increasing the volume of wood drying capacity and by increasing the production of reusable green wood shavings as opposed to unusable wood shavings following the kiln drying operation.