Diagonal veneer laminate

A method of manufacturing a laminated veneer lumber structure (10) comprising a plurality of superposed veneer layers (1a, 1b, 1c . . . ) with their surfaces glued to each other, characterized in that in each veneer layer the main grain (S1 or S2) is disposed to form a crossing angle (.alpha.) between the main grain of immediately superposed veneer layers which is in the range of 3.degree. to 20.degree., the plurality of superposed veneer layers further characterized in that a veneer web (2), having the main grain (S) at least essentially transverse to the length (L) of the web, is cut (4) transversely into square, rhombic, parallelogrammic or rectangular veneer sheets (3a, 3b, 3c . . . ) so that the cutting direction (D) forms an angle (.beta.) with the grain (S) which is half of the desired crossing angle (.alpha.) between the grains (S1 and S2) of immediately superposed veneer layers (1a and 1b;

• 1b and 1c;
• 1c and 1d . . . ) in the laminated veneer lumber (10) obtained as the end product;
• a first veneer layer (1a) of the laminated veneer lumber is formed by turning the obtained veneer sheets (3) approximately 90.degree. about an axis perpendicular to their plane so that the sheet edges corresponding to the edges (5) of the original veneer web are joined so as to form a veneer sheet row (6);
• on top of the veneer layer (1a) of this laminated veneer lumber an immediately superposed second veneer layer (1b) is formed by turning the obtained veneer sheets (3) both 180.degree. about an axis passing through their plane and 90.degree. about an axis perpendicular to their plane, so that the sheet edges corresponding to the edges (5) of the original veneer web join so as to form a second veneer sheet row (7) on top of and attached to the first veneer sheet row;
• on top of this second veneer layer (1b) of the laminated veneer lumber, veneer layers (1c, 1d . . . ) of the type of the first row (6) and of the type of the second row (7) are formed alternatingly, until the desired thickness of the laminated veneer lumber is reached;
• and
• gluing together the veneer layers (1a, 1b, 1c, 1d . . . ) of the laminated veneer lumber.

A method of manufacturing a laminated veneer lumber structure (10) comprising a plurality of superposed veneer layers (1a, 1b, 1c . . . ) with their surfaces glued to each other, characterized in that in each veneer layer the main grain (S1 or S2) is disposed to form a crossing angle (.alpha.) between the main grain of immediately superposed veneer layers which is in the range of 3.degree. to 20.degree., the plurality of superposed veneer layers further characterized in that a veneer web (2), having the main grain (S) at least essentially transverse to the length (L) of the web, is cut (4) transversely into essentially square, rhombic, parallelogrammic or rectangular veneer sheets (3a, 3b, 3c . . . ) so that the cutting direction (D) forms an angle (.beta.) with the grain (S) which is half of the desired crossing angle (.alpha.) between the grains (S1 and S2) of immediately superposed veneer layers (1a and 1b;

• 1b and 1c;
• 1c and 1d . . . ) of the laminated veneer lumber (10) obtained as the end product;
• a veneer sheet row (6) is formed by turning the obtained veneer sheets (3) approximately 90.degree. about an axis perpendicular to their plane so that the sheet edges corresponding to the edges (5) of the original veneer web are joined;
• the joining edges (5) of the veneer sheet row (6) obtained are glued in order to obtain a veneer sheet web (12) for one veneer layer of the laminated veneer lumber;
• at least one second veneer sheet row (6) is formed by turning the obtained veneer sheets (3) approximately 90.degree. about an axis perpendicular to their plane so that the sheet edges corresponding to the edges (5) of the original veneer web are joined;
• the joining edges (5) of each veneer sheet row (6) are glued to each other to obtain at least one second veneer sheet web (13) for one veneer layer of the laminated veneer lumber;
• two superposed veneer layers (1a and 1b) of the laminated veneer lumber are formed by turning the second veneer sheet web (13) 180.degree. about an axis in the longitudinal direction of the web and by placing it on top of the first veneer sheet web (12) with parallel longitudinal directions;
• forming on top of the second veneer layer (1b) of the laminated veneer lumber veneer layers (1c, 1d . . . ) alternatingly of the type of the first veneer sheet web (12) and of the type of the second veneer sheet web (13), until the desired thickness of the laminated veneer structure is reached;
• and
• gluing together the veneer layers (1a, 1b, 1c, 1d . . . ) of the laminated veneer lumber.