DOUBLE-TEE WOODEN GLUED BEAM Russian patent published in 2016 - IPC E04C3/12 

FIELD: construction.

SUBSTANCE: double-tee wooden beam comprises two wooden flanges and wall jointed with shelves in a slot using glue. Wall is made in form of wood-polymer plates consisting of thermoplastic composition (polyethylene (PE) or polypropylene (PP) or polyvinyl chloride (PVC), filler from wastes of woodworking industry in form of wood flour or chips of fine fraction and additives, which control rheological and physical-mechanical properties of composition, and is formed by two vertical planes, interconnected by horizontal planes to form wall of beam along whole length of cavities in form of quadrangular, round, oval and other geometric shapes of cross section. Shape of slot in shelf is made with double recess or ledge in middle. Slot is filled with glue composition based on formaldehyde, epoxide, polyurethane, polyvinyl acetate and derivatives based on said resins.

EFFECT: increasing carrying capacity of beam.

4 cl, 3 dwg