Method to produce a wood-based product and product thus obtained

Abstract

A method to produce a wood-based product ( 10 ) comprises a first step in which, from a trunk ( 12 ) of wood, a plurality of sheets of wood ( 14 ) are made, a second step in which a stack or pile ( 15 ) formed by the sheets ( 14 ) disposed one on top of the other is made, and in which, between one sheet ( 14 ) and the other, a layer of adhesive material ( 16 ) is deposited, along determinate gluing planes (P), a third step in which the stack or pile ( 15 ) is subjected to compression for a determinate period of time, so as to allow the reticulation of the adhesive material and to make the sheets ( 14 ) adhere permanently to each other, and a fourth step in which the stack or pile ( 15 ) is cut along at least a plane transverse to said gluing planes (P), in order to obtain the product ( 10 ). In the second step an adhesive with a bi-component silicone base is used.

1 . Method to produce a flexible wood-based product ( 10 ), comprising a first step in which, a stack or pile ( 15 ) is formed by a plurality of sheets of wood ( 14 ) disposed one on top of the other, and in which, between one sheet ( 14 ) and the other, a layer of adhesive material ( 16 ) is deposited, along determinate gluing planes (P), a second step in which the stack or pile ( 15 ) is subjected to compression for a determinate period of time, so as to allow the reticulation of the adhesive material and to make the sheets ( 14 ) adhere permanently to each other, and a third step in which the stack or pile ( 15 ) is cut along at least a plane transverse to said gluing planes (P), in order to obtain the flexible product ( 10 ), characterized in that in the first step an elastomer adhesive with a bi-component silicone base is used. 
     
     
         2 . Method as in  claim 1 , characterized in that the thickness of each sheet ( 14 ) is less than about 3 mm. 
     
     
         3 . Method as in  claim 1  or  2 , characterized in that the bi-component silicone is formed by two silicone based components, of which a first component A having an approximate density comprised between about 1.40 and 1.50 kg/l, and a second component B having an approximate density comprised between 1.00 and 1.10 kg/l. 
     
     
         4 . Method as in  claim 3 , characterized in that the bi-component silicone is formed by a first component A and a second component B having a mixing ratio A:B comprised between 10:1 and 15:1. 
     
     
         5 . Method as in  claim 3 , characterized in that the bi-component silicone used has a mixed density comprised between 1.20 kg/l and 1.48 kg/l. 
     
     
         6 . Method as in  claim 3 , characterized in that the bi-component silicone is formed by two silicone based components, of which a first component A having an approximate viscosity comprised between about 1100 Pa*s and 1300 Pa*s, and a second component B having an approximate viscosity comprised between 100 Pa*s and 120 Pa*s. 
     
     
         7 . Method as in  claim 3 , characterized in that the bi-component silicone used has a Shore hardness A between 40 and 50. 
     
     
         8 . Method as in  claim 3 , characterized in that the bi-component silicone used has an elongation at breaking point comprised between 220% and 260%. 
     
     
         9 . Method as in  claim 3 , characterized in that the bi-component silicone used has a resistance to traction comprised between 2 N/mm 2  and 2.5 N/mm 2 . 
     
     
         10 . (canceled) 
     
     
         11 . Method as in  claim 1 , characterized in that the temperature at which compression occurs in the second step is comprised between about 4° C. and 50° C. 
     
     
         12 . Method as in  claim 1 , characterized in that the temperature at which compression occurs in the second step is comprised between about 20° C. and 30° C. 
     
     
         13 . Method as in  claim 1 , characterized in that the temperature at which compression occurs in the second step is comprised between about 20° C. and 25° C. 
     
     
         14 . Method as in  claim 1 , characterized in that the wood used is teak. 
     
     
         15 . (canceled) 
     
     
         16 . (canceled) 
     
     
         17 . (canceled) 
     
     
         18 . (canceled) 
     
     
         19 . Flexible wood-based product formed by a plurality of layers ( 19 ) of wood reciprocally attached to each other by means of relative interposed layers of adhesive material ( 16 ), characterized in that the adhesive material ( 16 ) is an elastomer adhesive with a bi-component silicone base. 
     
     
         20 . Product as in  claim 19 , characterized in that the bi-component silicone is formed by two silicone-based components, of which a first component A having an approximate density comprised between about 1.40 and 1.50 kg/l, and a second component B having an approximate density comprised between 1.00 and 1.10 kg/l. 
     
     
         21 . Product as in  claim 19  or  20 , characterized in that the bi-component silicone is formed by a first component A and a second component B having a mixing ratio A:B comprised between 10:1 and 15:1. 
     
     
         22 . Product as in  claim 20 , characterized in that the bi-component silicone used has a mixed density comprised between 1.20 kg/l and 1.48 kg/l. 
     
     
         23 . Product as in  claim 20 , characterized in that the bi-component silicone is formed by two silicone based components, of which a first component A having an approximate viscosity comprised between about 1100 Pa*s and 1300 Pa*s, and a second component B having an approximate viscosity comprised between 100 Pa*s and 120 Pa*s. 
     
     
         24 . Product as in  claim 20 , characterized in that the bi-component silicone used has a Shore hardness between 40 and 50. 
     
     
         25 . Product as in  claim 20 , characterized in that the bi-component silicone used has an elongation at breaking point comprised between 220% and 260%. 
     
     
         26 . Product as in  claim 20 , characterized in that the bi-component silicone used has a resistance to traction comprised between 2 N/mm 2  and 2.5 N/mm 2 . 
     
     
         27 . (canceled) 
     
     
         28 . Product as in  claim 19 , characterized in that that the thickness of each layer ( 19 ) is less than about 3 mm. 
     
     
         29 . Product as in  claim 19 , characterized in that the layers ( 19 ) are disposed one with respect to the other on parallel planes, spaced by the layers of adhesive material ( 16 ) so as to define a “striped” effect. 
     
     
         30 . Product as in  claim 19 , characterized in that the wood used is teak. 
     
     
         31 . Walkable surface made by means of a plurality of products as in  claim 19 . 
     
     
         32 . Use of a product as in  claim 19 , to make covering surfaces and/or walkable surfaces in the nautical field. 
     
     
         33 . Use of a product as in  claim 19 , to make anti-seismic structures. 
     
     
         34 . Use of a product as in  claim 19 , to make seating elements or parts of seating elements, such as back-rests or seat-parts.