Summary of the invention
The objective of the invention is to, a kind of production technology of new technology wood is provided.Product wood color and moisture content that the present invention produces are even, and can enlarge veneer thickness, can also enhance productivity the environmental pollution that can avoid chemical reaction to cause simultaneously.
Technical scheme of the present invention: a kind of production technology of new technology wood is characterized in that this method comprises the steps:
A, make the blank veneer, and the blank veneer cut into required size by rotary-cut or slicing, the A veneer;
B, the A veneer is carried out the charing heat treatment of different carburizing temperatures, obtains required wood color, the B veneer;
C, the B veneer is carried out impregnation, mold pressing successively and the flitch health is handled, the C flitch;
D, the sawing of C flitch is become required decorative pattern and size, finished product.
In the production technology of aforesaid new technology wood, described A veneer thickness is 0.7-4mm.
In the production technology of aforesaid new technology wood, described step b is, the A veneer is placed carbonizing apparatus, heat up rapidly and humidification, temperature is increased to 80-90 ℃, humidity humidification to relative humidity is 70%-80%, keep 1-2h, adopt the staged temperature-rising method then, be warmed up to 125-240 ℃ and keep 2-4h by the speed of 20-25 ℃/h, adopt jet atomization water method with below the fast cooling to 100 in the carbonizing apparatus ℃ at last, stop jet atomization water, kiln discharge gets the B veneer when being cooled to 40-60 ℃ naturally.
In the production technology of aforesaid new technology wood, the glue of impregnation is urea-formaldehyde resin adhesive among the described step c, and solid content is 55%-60%, and viscosity is 330-400mPas in the time of 25 ℃, and the ph value is 5-6.
In the production technology of aforesaid new technology wood, the method for flitch health is among the described step c, the B veneer is carried out making the intermediate products flitch after impregnation and the mold pressing, and with flitch room temperature health 4 days, the C flitch.
In the production technology of aforesaid new technology wood, described charing heat treatment is kiln formula charing heat treatment, hot pressing charing heat treatment and pot type charing heat treatment, or any compound mode of three's heat treatment mode.
Compared with prior art, the present invention is changed colour to timber by high temperature carbonization heat treatment, not only can improve wood dimensional stability and anti-corrosive durability, also can make timber obtain different wood colors, and make wood color, moisture content on the whole plate face of fast growing wood veneer be tending towards uniformity by the mode of control treatment temperature, time and processing.The present invention also has following advantage: 1, veneer wood color and moisture content are even, have also saved the blanching step of part tree lumber, reduce processing step, save cost; 2, material internal pore permeability increases, and improves the operating efficiency of gluing step, and then further enhances productivity; 3, pure physical modification, the environmental pollution of having avoided chemical treatment to cause can reduce the harm to operator's health; Therefore 4, charing heat treatment is changed colour and can be run through whole thickness of timber and length direction, can enlarge veneer thickness, and maximum can make veneer expand 4mm to, is 5 times of the conventional veneer that changes colour.The present invention carries out impregnation by specific glue, and the feasible effect of changing colour is better.
The specific embodiment
The present invention is further illustrated below in conjunction with embodiment, but not as the foundation to the present invention's restriction.
Embodiment 1.A kind of production technology of new technology wood, this method comprises the steps:
A, make the blank veneer, and the blank veneer cut into required size by rotary-cut or slicing, the A veneer;
B, the A veneer is placed carbonizing apparatus, heat up rapidly and humidification, temperature is increased to 80 ℃, humidity humidification to relative humidity is 80%, keeps 2h, adopts the staged temperature-rising method then, be warmed up to 125 ℃ and keep 4h by the speed of 25 ℃/h, adopt jet atomization water method with fast cooling to 100 in the carbonizing apparatus ℃ at last, stop jet atomization water, kiln discharge gets the B veneer when being cooled to 60 ℃ naturally;
C, the B veneer is carried out impregnation, mold pressing successively and the flitch health is handled, the C flitch, the glue of impregnation is urea-formaldehyde resin adhesive, solid content is 55%-60%, viscosity is 330-400mPas in the time of 25 ℃, the ph value is 5-6;
D, the sawing of C flitch is become required decorative pattern and size, finished product.
Described A veneer thickness is 0.7-4mm.
The method of flitch health is among the described step c, the B veneer is carried out making the intermediate products flitch after impregnation and the mold pressing, and with flitch health at room temperature 4 days, get the C flitch.
Described charing heat treatment is kiln formula charing heat treatment, hot pressing charing heat treatment and pot type charing heat treatment, or any compound mode of three's heat treatment mode.
Embodiment 2.A kind of production technology of new technology wood, this method comprises the steps:
A, make the blank veneer, and the blank veneer cut into required size by rotary-cut or slicing, the A veneer;
B, the A veneer is placed carbonizing apparatus, heat up rapidly and humidification, temperature is increased to 90 ℃, humidity humidification to relative humidity is 70%, keeps 1h, adopts the staged temperature-rising method then, be warmed up to 240 ℃ and keep 2h by the speed of 20 ℃/h, adopt jet atomization water method with fast cooling to 90 in the carbonizing apparatus ℃ at last, stop jet atomization water, kiln discharge gets the B veneer when being cooled to 40 ℃ naturally;
C, the B veneer is carried out impregnation, mold pressing successively and the flitch health is handled, the C flitch, the glue of impregnation is urea-formaldehyde resin adhesive, solid content is 55%-60%, viscosity is 330-400mPas in the time of 25 ℃, the ph value is 5-6;
D, the sawing of C flitch is become required decorative pattern and size, finished product.
Described A veneer thickness is 0.7-4mm.
The method of flitch health is among the described step c, the B veneer is carried out making the intermediate products flitch after impregnation and the mold pressing, and with flitch health at room temperature 4 days, get the C flitch.
Described charing heat treatment is kiln formula charing heat treatment, hot pressing charing heat treatment and pot type charing heat treatment, or any compound mode of three's heat treatment mode.
Embodiment 3.A kind of production technology of new technology wood, this method comprises the steps:
A, make the blank veneer, and the blank veneer cut into required size by rotary-cut or slicing, the A veneer;
B, the A veneer is placed carbonizing apparatus, heat up rapidly and humidification, temperature is increased to 85 ℃, humidity humidification to relative humidity is 75%, keeps 1.5h, adopts the staged temperature-rising method then, be warmed up to 190 ℃ and keep 3h by the speed of 22 ℃/h, adopt jet atomization water method with below the fast cooling to 80 in the carbonizing apparatus ℃ at last, stop jet atomization water, kiln discharge gets the B veneer when being cooled to 50 ℃ naturally;
C, the B veneer is carried out impregnation, mold pressing successively and the flitch health is handled, the C flitch, the glue of impregnation is urea-formaldehyde resin adhesive, solid content is 55%-60%, viscosity is 330-400mPas in the time of 25 ℃, the ph value is 5-6;
D, the sawing of C flitch is become required decorative pattern and size, finished product.
Described A veneer thickness is 0.7-4mm.
The method of flitch health is among the described step c, the B veneer is carried out making the intermediate products flitch after impregnation and the mold pressing, and with flitch health at room temperature 4 days, get the C flitch.
Described charing heat treatment is kiln formula charing heat treatment, hot pressing charing heat treatment and pot type charing heat treatment, or any compound mode of three's heat treatment mode.