CN114603671B - Preparation method of high-stability solid wood composite floor - Google Patents

Preparation method of high-stability solid wood composite floor Download PDF

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Publication number
CN114603671B
CN114603671B CN202210358678.1A CN202210358678A CN114603671B CN 114603671 B CN114603671 B CN 114603671B CN 202210358678 A CN202210358678 A CN 202210358678A CN 114603671 B CN114603671 B CN 114603671B
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solid wood
wood composite
composite floor
stability solid
coating
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CN114603671A (en
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洪杰
施连军
戴维德
李峰
梁长里
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Xiaosen New Material Technology Co ltd
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Xiaosen New Material Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/04—Manufacture or reconditioning of specific semi-finished or finished articles of flooring elements, e.g. parqueting blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/02038—Flooring or floor layers composed of a number of similar elements characterised by tongue and groove connections between neighbouring flooring elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
    • E04F15/045—Layered panels only of wood
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/181—Insulating layers integrally formed with the flooring or the flooring elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire

Abstract

The invention relates to a preparation method of a high-stability solid wood composite floor, which mainly comprises the following steps of: selecting materials; (II) layering and hot pressing; (1) first forming; (2) preserving health, sanding and fixing thickness; (3) secondary molding; (4) curing, trimming, sanding and thickness setting; (5) third molding; (III) sealing and isolating coating; (IV) grooving tenons; (V) surface finishing; and (VI) edge sealing treatment. The invention overcomes the defects that the existing solid wood floor or solid wood composite floor and the like are easy to have poor dimensional stability and the like, ensures uniform and stable moisture content of each layer of single board and good stress performance of the board blank by optimizing the single board, using 9 layers of symmetrical structures and three-time forming process and matching with multiple sanding for thickness setting, avoids the problem of poor dimensional stability of the solid wood composite floor, reduces the stress between each layer of single board and the use amount of glue, reduces the cost, has high environmental protection level, and can be made into larger specifications (the width of the floor can reach more than 1.65 m).

Description

Preparation method of high-stability solid wood composite floor
Technical Field
The invention relates to a preparation method of a high-stability solid wood composite floor, which is applied to the field of production of the solid wood composite floor.
Background
The solid wood composite floor is formed by laminating the boards of different tree species in a staggered manner, overcomes the defects of wet expansion and dry shrinkage of the solid wood floor (non-laminated) to a certain extent, has small dry shrinkage and wet expansion rate and better dimensional stability, and simultaneously keeps the natural wood grains and comfortable foot feel of the solid wood floor, so that the solid wood composite floor has the advantages of both the stability of a strengthened floor and the attractiveness of the solid wood floor and is environment-friendly.
The solid wood composite floor comprises a surface layer and a base material, wherein the surface layer is a single-layer board, the base material is a plywood, and the preparation process comprises base material preparation, tenoning, surface coating, edge sealing treatment and the like. However, in the use process of the solid wood composite floor, because the water in the middle layer board core of the plywood cannot be discharged in the base material forging and pressing preparation process, the water in the middle layer board core is higher, so that the floor is easy to deform and crack, and the problems of cracking, warping and deformation and the like often occur in the floor especially in the environment of using floor heating, and the dimensional stability of the floor is poor.
For example, patent application No. CN201710192121.4 discloses a method for preparing a high-stability solid wood composite floor by layered forging of odd-even symmetrical assembly, which strictly controls parameters of a base material to eliminate stress deformation and maintain the stability of the size and the structure of the base material through the assembly of the odd-even symmetrical structure; the method specifically adopts a three-layer forging and pressing secondary pressing process to adjust the water content in the board to be uniform and stable, so that formaldehyde in the board blank is released to the maximum extent and the internal stress of the single board is released, the mechanical property is more stable, and meanwhile, the board is treated by adopting an edge sealing agent containing polyethylene and propolis, so that the floor with low formaldehyde release amount, uniform water content, good dimensional stability, excellent waterproof performance and stability is obtained. However, the applicant has found that the product still has poor dimensional stability when subjected to internal bond strength measurement, moisture resistance measurement and surface crack resistance measurement.
At present, when a solid wood floor or a solid wood composite floor used by people is installed, certain gaps exist between tenons and grooves, and along with seasonal humidity change of the floor, after the floor is dried, contracted and expanded, end joints of the floor are prone to being pulled out, harsh noise can be generated after the floor is trampled, the size stability is poor, the floor with large specification cannot be made, and the width of the floor cannot be more than 1.65 m.
Therefore, it is necessary to provide a method for manufacturing a high-stability solid wood composite floor with a larger product specification, which is not easy to crack or curl.
Disclosure of Invention
In order to overcome the defects that the existing solid wood floor or solid wood composite floor is easy to have poor dimensional stability and the like, the invention provides the preparation method of the high-stability solid wood composite floor, which ensures that the moisture content of each layer of single board is uniform and stable, the stress performance of a plate blank is good, the problem of poor dimensional stability of the solid wood composite floor is avoided, the stress between each layer of single board and the use amount of glue are reduced, the cost is reduced, the environmental protection level is high, and the floor product can be made into a larger size (the width of the floor can reach more than 1.65 m) by preferably selecting the single board, using a 9-layer symmetrical structure and a three-time forming process and matching with multiple sanding and thickness setting.
The technical scheme of the invention is as follows:
a preparation method of a high-stability solid wood composite floor mainly comprises the following steps of sequentially carrying out:
material selection:
selecting eucalyptus single plates with water content of 8-12% and thickness of 2.2-2.6mm and miscellaneous wood single plates with water content of 8-14% and thickness of 0.4-0.6 mm;
(II) layering and hot pressing:
(1) Primary molding:
(1) glue spreading: coating three trees between two adjacent eucalyptus veneers in a single-sided glue distribution manner, wherein the glue distribution amount is 250-350g/m 2 ；
(2) Assembling the plates: stacking the eucalyptus veneers together, wherein the extending directions of the eucalyptus veneers between every two adjacent eucalyptus veneers are mutually vertical;
(3) cold pressing: aging at room temperature for at least 10min, and pressurizing to 0.6-0.8Mpa/m 2 Maintaining the pressure for 28-32min, then trimming the overlapped part, and filling the vacant part;
(4) hot pressing: at 125-130 deg.C under 0.8-1.0Mpa/m 2 Maintaining the pressure for 6-8min, and slowly reducing the pressure to 0.15-0.25Mpa/m 2 Maintaining the pressure for 2-3min, and then slowly reducing the pressure to normal pressure to obtain a plate blank;
(2) Preserving health, sanding and thickness setting: stacking the plate blanks, carrying out flat pressing for 3-5 days by using a weight more than or equal to 200kg for curing, then uniformly sanding the two surfaces of the plate blanks to fix the thickness, taking sand leveling as a standard, and controlling the tolerance to be +/-0.2 mm;
(3) And (3) secondary molding:
(1) glue spreading: three trees are coated between two adjacent eucalyptus veneers or eucalyptus veneers and plate blanks in a single-side glue distribution mode, and the glue distribution amount is 210-230g/m 2 ；
(2) Assembling the plates: two layers of eucalyptus veneers, a plate blank and two layers of eucalyptus veneers are sequentially stacked together from bottom to top, and the extending directions of every two adjacent eucalyptus veneers or the eucalyptus veneers and the plate blank are mutually vertical;
(3) cold pressing: aging at room temperature for at least 10min, and pressurizing to 0.6-0.8Mpa/m 2 Maintaining the pressure for 28-32min; then, trimming the overlapped part and filling the vacant part;
(4) hot pressing: at 125-130 deg.C under 0.8-1.0Mpa/m 2 Maintaining the pressure for 12-15min, slowly reducing the pressure to 0.45-0.55Mpa/m 2 Maintaining the pressure for 2-3min, and then slowly reducing the pressure to normal pressure to obtain the substrate;
(4) Curing, trimming, sanding and thickness setting: stacking the substrates, carrying out flat pressing for 5-7 days by using a weight more than or equal to 200kg for curing, repairing a substrate assembly, uniformly sanding two surfaces of the substrate assembly to fix the thickness, taking sand flattening as a standard, and controlling the tolerance to be +/-0.2 mm;
(5) And (3) third molding:
stacking and attaching the mixed wood veneers, the substrate assembly and the mixed wood veneers together from bottom to top in sequence, wherein each layer of mixed wood veneer consists of the mixed wood veneers which are parallel to each other, and the extending directions of every two adjacent mixed wood veneers and the substrate assembly are mutually vertical to each other, so that the high-stability solid wood composite floor assembly is obtained;
(III) sealing and isolating coating: coating a standard color bottom layer and a digital spraying decoration layer on the surface of the high-stability solid wood composite floor assembly;
(IV) grooving tenons: the opposite end surfaces of the high-stability solid wood composite floor assembly are respectively provided with a groove and a tenon, and the adjacent high-stability solid wood composite floors can be mutually matched and connected through the groove and the tenon;
(V) surface coating: carrying out surface coating on the high-stability solid wood composite floor assembly;
(VI) edge sealing treatment: and (4) carrying out edge sealing treatment on the high-stability solid wood composite floor assembly subjected to surface coating, so as to obtain the high-stability solid wood composite floor.
According to the preparation method of the high-stability solid wood composite floor, the veneers are preferably selected, the 9-layer symmetrical structure and the three-time forming process are used, and the multiple sanding is matched for thickness setting, so that the uniform and stable moisture content of each layer of veneer and the good stress performance of a plate blank are ensured, the stress between each layer of veneer and the use amount of glue are reduced, the cost is reduced, the environmental protection level is high, the size, the color and the surface stability are good, and the floor product can be made into a larger size (the width of the floor can reach more than 1.65 m).
Wherein, through four factors of the moisture content, the texture, the tree species, the thickness of close control preferred veneer to this eliminates stress deformation, maintains the stability of substrate size and structure. Adopt the panel blank to be the intermediate level, existing being favorable to guaranteeing the support intensity of floor, easily cooperate other layer veneers to make the moisture content even stable again, and the cubic shaping all makes the veneer moisture content balanced after hot pressing at every turn, later alternate between each time forming technology and carry out abundant health preserving to the panel blank again, sand light process thick surely, so stress in each veneer can obtain fully releasing, with this mechanical properties who obtains more stable, when panel intensity promotes, the use amount of glue has fully been reduced again, environmental protection performance obtains promoting. The three trees used in the glue distribution steps of the first forming and the second forming are SK-WQY A or SK-WQY B without aldehyde glue; the sectional depressurization in the hot pressing step enables the plate to be capable of slowly dehumidifying, and can effectively avoid floor swelling. The temperature and the moisture of the plate can be slowly released in the curing process; repair and cut overlapping portion in the cold pressing step of primary forming and secondary forming, the process that the vacancy part was filled and establish twice health preserving after primary forming and secondary forming respectively, sand light fixed thickness process, make the pressure of panel even, the panel internal stress has effectively been reduced, the processing breadth of panel has effectively been promoted, the floor width can reach more than 1.65m promptly (current floor length generally all is about 1.2m, and the width generally can't accomplish more than 1.65 m), reduce the saw way loss, the outturn rate has been promoted, make product property ability more stable, non-deformable.
The step (IV) of slotting tenons is specifically as follows: the grooves and the tenons on the end faces with the opposite long edges between the high-stability solid wood composite floor assembly are matched with each other in a flat buckling mode, and the grooves and the tenons on the end faces with the opposite short edges are matched with each other in a buckling mode.
The long side adopts a flat buckling technology, so that the material loss is reduced; the short edge adopts the locking technology to provide locking force. The machining allowance of the existing similar solid wood composite floor is 11-14%, while the machining allowance of the high-stability solid wood composite floor is 7-10%, and the outturn percentage is improved by 1.4%. The increase of the processing outturn rate is caused by the free change of the product size, the loss of the material corner is small, the utilization rate is high, and a large amount of cost can be saved.
The step (IV) of slotting tenons is specifically as follows: the long-edge grooves and the long-edge tenons are respectively arranged on the two long-edge end surfaces of the high-stability solid wood composite floor assembly, the long-edge grooves and the long-edge tenons extend along the long edges, the long-edge tenons extend out of the outer sides of the long-edge end surfaces and are perpendicular to the extending direction of the long edges, and the long-edge grooves and the long-edge tenons of adjacent high-stability solid wood composite floor pieces can be matched with each other;
the top of one short edge end face of the high-stability solid wood composite floor assembly is of a two-layer step-shaped structure, the step A extends along the extension direction of the short edge, the upper layer step A protrudes out of the high-stability solid wood composite floor assembly than the lower layer step A, the bottom of the short edge end face is provided with a short edge tenon protruding out of the short edge end face, the short edge tenon extends along the extension direction of the short edge, and the outer edge of the short edge tenon facing one side face of the step A is provided with a convex strip A protruding towards the direction of the upper layer step A and extending along the short edge; a clamping groove A is formed between the step A and the short edge tenon; the top of the end face of the other short edge is of a two-layer step structure, the step B extends along the short edge, the lower layer step B protrudes out of the high-stability solid wood composite floor assembly compared with the upper layer step B, a convex strip B protruding in the direction back to the upper layer step B and extending along the short edge is arranged at the outer edge of one side face of the upper layer step B, back to the lower layer step B, and a clamping groove B is formed between the convex strip B and the end face of the short edge; the adjacent high-stability solid wood composite floor assembly is mutually matched through the clamping of the lower-layer step B, the convex strip B and the clamping groove A and the clamping of the convex strip A and the clamping groove B.
The preferred long-edge flat buckling and short-edge buckling mode enables connection to be faster and firmer.
The step (II) of layered hot pressing also comprises the following steps: in the first forming, the second forming and the third forming, the smooth grain surfaces of the eucalyptus single plates or the mixed wood single plates at the end surfaces of the long sides and the short sides of the plate blank, the base plate assembly and the high-stability solid wood composite floor assembly face outwards.
The design that the lines of the board face outwards enables the moisture absorption capacity of the floor to be reduced, and the dimensional stability and the waterproof performance to be improved.
The step (III) comprises the following steps:
(1) Coating a standard color bottom layer: treating the surface of the high-stability solid wood composite floor assembly, coating putty on the surface of the high-stability solid wood composite floor assembly in a roller coating mode, and quickly drying by infrared rays;
(2) And (3) digitally spraying a decorative layer, namely directly spraying and printing a digital decorative picture on the surface of the high-stability solid wood composite floor assembly subjected to standard color bottom layer coating treatment by adopting an intelligent digital printer and high color retention ink.
The step of coating the standard color bottom layer lays a foundation for the subsequent step of digitally spraying the decorative layer and the surface coating process, and the digitally spraying the decorative layer endows the floor with richer colors and patterns. Wherein, the putty is preferably three Uygur (UV) adhered putty UNG221-HP + and three Uygur (UV) roller painting putty UNG244+.
The surface coating step (V) comprises the following steps:
(1) Coating of high-transparency UV primer: coating at least 4 layers of high-transparency UV (ultraviolet) primer on the surface of the high-stability solid wood composite floor assembly subjected to grooving and tenoning in a roller coating or curtain coating mode;
(2) Coating an anti-yellowing UV finish: and coating at least 4 layers of yellowing-resistant UV finish paint on the surface of the high-stability solid wood composite floor assembly coated with the high-transparency UV primer in a rolling coating or curtain coating mode.
The existing method of coating a single-layer wear-resistant primer is mostly adopted in floor surface coating, the strength of a paint film is improved by increasing the coating amount of the wear-resistant primer, but the problem that the paint film is easy to become brittle exists. The preferable surface coating step of the scheme adopts a compound enhancement process, adopts a method of coating a plurality of layers of high-transparency UV primer and yellowing-resistant UV finish paint, penetrates the floor in an intrusive mode, and fixedly interconnects paint films, solves the problem that the existing solid wood composite floor is easy to become brittle in paint coating processing, and enables the paint films to have the advantages of wear resistance, high color fastness, high surface strength and high surface impact resistance. The high-transparency UV primer plays roles in filling and isolating, so that the paint film has the performances of wear resistance, high hardness, high color retention and the like, and the yellowing-resistant UV finish paint plays a role in surface protection. The high transparency UV primer is preferably a tri-mowery (UV) clear adhesion primer UDG213+, a tri-mowery (UV) clear primer UDG245+.
The concrete steps of the edge sealing treatment in the step (VI) are as follows: spraying molten waterproof beeswax to the four end faces of the surface-coated high-stability solid wood composite floor assembly, wherein the spraying amount is 40-60g/m 2 Thus obtaining the high-stability solid wood composite floor.
Through the edge sealing treatment of the solid wood composite floor, when wax is sprayed to the end face, a part of wax can permeate into pores of the single board and be solidified to close the pores, and the other part of wax is positioned on the end face and is solidified to form a wax film on the end face. Therefore, the edge sealing treatment can prevent external water vapor from entering the floor, prevent the floor from being damped and deformed and absorbing moisture and expanding, and prolong the service life of the floor.
The temperature of the molten honey wax is 70-80 ℃.
Preferably, the wax is protected from water so that the spray is more uniform.
Compared with the prior art, the method has the following advantages:
1) According to the preparation method of the high-stability solid wood composite floor, the veneers are selected preferably, the process of forming the veneers for three times with 9 layers of symmetrical structures is adopted, and the sanding and the thickness setting are matched for multiple times, so that the uniform and stable water content of each layer of veneer and the good stress performance of a plate blank are ensured, the stress between each layer of veneer and the use amount of glue are reduced, the cost is reduced, the environmental protection level is high, the size, the color and the surface stability are good, and the floor product can be made into a larger size (the width of the floor can reach more than 1.65 m);
2) The long side adopts a flat buckling technology, so that the material loss is reduced; the short edge adopts a locking technology to provide locking force;
3) The design that the lines of the board face outwards reduces the moisture absorption capacity of the floor, and improves the dimensional stability and the waterproof performance;
4) In the surface coating step, a compound enhancement process is adopted, and a method of coating a high-transparency UV primer and a yellowing-resistant UV finish paint in multiple layers is adopted, so that a paint film has the advantages of wear resistance, high color fastness, high surface strength and high surface impact resistance;
5) Inside can preventing that external steam from getting into the floor through the banding processing to solid wood composite floor, prevent that the floor from weing to warp and the moisture absorption inflation, promote floor life.
Drawings
FIG. 1 is a schematic view of the long-side clamping of the high-stability solid wood composite floor according to the method for manufacturing the high-stability solid wood composite floor of the present invention;
FIG. 2 is a schematic diagram of the short side clamping of the high-stability solid wood composite floor according to the preparation method of the high-stability solid wood composite floor of the invention.
Description of reference numerals:
the long-side groove 1, the long-side tenon 2, the step A3, the step B4, the short-side tenon 5, the clamping groove A6, the clamping groove B7, the upper step A3-1, the lower step A3-2, the upper step B4-1, the lower step B4-2, the convex strip A5-1 and the convex strip B4-2-1.
Detailed Description
The technical scheme of the invention is explained in detail in the following with reference to the attached drawings 1-2 of the specification.
Example 1
As shown in fig. 1-2, the preparation method of the high-stability solid wood composite floor mainly comprises the following steps in sequence:
material selection:
selecting eucalyptus veneers with the water content of 10 percent and the thickness of 2.4mm and miscellaneous wood veneers with the water content of 10 percent and the thickness of 0.5 mm;
(II) layering and hot pressing:
(1) Primary molding:
(1) glue spreading: three trees are coated between two adjacent eucalyptus veneers in a single-sided glue distribution mode, and the glue distribution amount is 300g/m 2 ；
(2) Assembling the plates: stacking the eucalyptus veneers together, wherein the extending directions of the eucalyptus veneers between every two adjacent eucalyptus veneers are mutually vertical;
(3) cold pressing: aging at room temperature for 10min, and pressurizing to 0.7Mpa/m 2 Maintaining the pressure for 30min, then repairing and cutting the overlapped part, and filling the vacant part;
(4) hot pressing: at 128 ℃ under a pressure of 0.9MPa/m 2 Maintaining the pressure for 7min, and slowly reducing the pressure to 0.2Mpa/m 2 Maintaining the pressure for 2.5min, and then slowly reducing the pressure to normal pressure to obtain a plate blank;
(2) Preserving health, sanding and thickness setting: stacking the plate blanks, carrying out flat pressing for 4 days by using a weight of 200kg for curing, and then uniformly sanding two surfaces of the plate blanks to fix the thickness, wherein the sand leveling is taken as the standard, and the tolerance is controlled within +/-0.2 mm;
(3) And (3) secondary molding:
(1) glue spreading: three trees are coated between two adjacent eucalyptus veneers or eucalyptus veneers and plate blanks in a single-side glue distribution mode by formaldehyde-free glue, and the glue distribution amount is 220g/m 2 ；
(2) Assembling the plates: two layers of eucalyptus veneers, a plate blank and two layers of eucalyptus veneers are sequentially stacked together from bottom to top, and the extending directions of every two adjacent eucalyptus veneers or the eucalyptus veneers and the plate blank are mutually vertical;
(3) cold pressing: aging at room temperature for 10min, and pressurizing to 0.7Mpa/m 2 Maintaining the pressure for 30min; then, trimming the overlapped part and filling the vacant part;
(4) hot pressing: at 128 deg.C under a pressure of 0.9MPa/m 2 Maintaining the pressure for 13minFirstly, slowly reducing the pressure to 0.5Mpa/m 2 Maintaining the pressure for 2.5min, and then slowly reducing the pressure to normal pressure to obtain the substrate;
(4) Curing, trimming, sanding and thickness setting: stacking the substrates, carrying out flat pressing for 6 days by using a weight of 200kg for curing, then repairing the substrate assembly, and then uniformly sanding the two surfaces of the substrate assembly to fix the thickness, wherein the sand leveling is used as the standard, and the tolerance is controlled to be +/-0.2 mm;
(5) And (3) molding for the third time:
stacking and attaching the mixed wood veneers, the substrate assembly and the mixed wood veneers together from bottom to top in sequence, wherein each layer of mixed wood veneer consists of the mixed wood veneers which are parallel to each other, and the extending directions of every two adjacent mixed wood veneers and the substrate assembly are mutually vertical to each other, so that the high-stability solid wood composite floor assembly is obtained;
(III) sealing and isolating coating: coating a standard color bottom layer and a digital spraying decoration layer on the surface of the high-stability solid wood composite floor assembly;
(IV) grooving tenons: the opposite end surfaces of the high-stability solid wood composite floor assembly are respectively provided with a groove and a tenon, and the adjacent high-stability solid wood composite floors can be mutually matched and connected through the groove and the tenon;
(V) surface coating: carrying out surface coating on the high-stability solid wood composite floor assembly;
(VI) edge sealing treatment: and (4) carrying out edge sealing treatment on the high-stability solid wood composite floor assembly subjected to surface coating, so as to obtain the high-stability solid wood composite floor.
The step (IV) of slotting tenons is specifically as follows: the grooves and the tenons on the end faces with the opposite long edges between the high-stability solid wood composite floor assembly are matched with each other in a flat buckling mode, and the grooves and the tenons on the end faces with the opposite short edges are matched with each other in a buckling mode.
The step (IV) of slotting tenons is specifically as follows: the long-edge grooves 1 and the long-edge tenons 2 are respectively arranged on the two long-edge end faces of the high-stability solid wood composite floor assembly, the long-edge grooves 1 and the long-edge tenons 2 extend along the long edges, the long-edge tenons 2 extend out of the outer sides of the long-edge end faces and are perpendicular to the extending direction of the long edges, and the long-edge grooves 1 and the long-edge tenons 2 of adjacent high-stability solid wood composite floor pieces can be matched with each other;
the top of one short edge end face of the high-stability solid wood composite floor assembly is of a two-layer step structure, the step A3 extends along the extension direction of the short edge, the upper layer step A3-1 protrudes out of the high-stability solid wood composite floor assembly compared with the lower layer step A3-2, the bottom of the short edge end face is provided with a short edge tenon 5 protruding towards the outside of the short edge end face, the short edge tenon 5 extends along the extension direction of the short edge, and the outer edge of the short edge tenon 5 facing one side face of the step A3 is provided with a protruding strip A5-1 protruding towards the direction of the upper layer step A3-1 and extending along the short edge; a clamping groove A6 is formed between the step A3 and the tenon 5 of the short edge; the top of the end face of the other short edge is of a two-layer step structure, the step B4 extends along the short edge, the lower-layer step B4-2 protrudes out of the assembly of the high-stability solid wood composite floor compared with the upper-layer step B4-1, a convex strip B4-2-1 protruding in the direction back to the upper-layer step B4-1 and extending along the short edge is arranged at the outer edge of one side face of the upper-layer step B4-1 of the lower-layer step B4-2, and a clamping groove B7 is formed between the convex strip B4-2-1 and the end face of the short edge; the adjacent high-stability solid wood composite floor assembly is mutually matched through the clamping connection of the lower-layer step B4-2, the convex strip B4-2-1 and the clamping groove A6 and the clamping connection of the convex strip A5-1 and the clamping groove B7.
The step (II) of layered hot pressing also comprises the following steps: in the first forming, the second forming and the third forming, the smooth grain surfaces of the eucalyptus single plates or the mixed wood single plates at the end surfaces of the long sides and the short sides of the plate blank, the base plate assembly and the high-stability solid wood composite floor assembly face outwards.
The step (III) comprises the following steps:
(1) Coating a standard color bottom layer: treating the surface of the high-stability solid wood composite floor assembly, coating putty on the surface of the high-stability solid wood composite floor assembly in a roller coating mode, and quickly drying by infrared rays;
(2) And (3) digitally spraying a decorative layer, namely directly spraying and printing a digital decorative picture on the surface of the high-stability solid wood composite floor assembly subjected to the coating standard color bottom layer treatment by adopting an intelligent digital printer and high color retention ink.
The surface coating step (V) comprises the following steps:
(1) Coating of high-transparency UV primer: coating 4 layers of high-transparency UV primer on the surface of the high-stability solid wood composite floor assembly subjected to grooving and tenoning in a roller coating or curtain coating mode;
(2) Coating yellowing-resistant UV finishing paint: and 4 layers of yellowing-resistant UV finish paint are coated on the surface of the high-stability solid wood composite floor assembly coated with the high-transparency UV primer in a rolling coating or curtain coating mode.
The edge sealing treatment in the step (six) comprises the following specific steps: spraying molten waterproof beeswax to the four end faces of the surface-coated high-stability solid wood composite floor assembly, wherein the spraying amount is 50g/m 2 Thus obtaining the high-stability solid wood composite floor.
The temperature of the molten honey wax was 75 ℃.
Example 2
As shown in fig. 1-2, the preparation method of the high-stability solid wood composite floor mainly comprises the following steps in sequence:
material selection:
selecting eucalyptus veneers with the water content of 8 percent and the thickness of 2.6mm and miscellaneous tree veneers with the water content of 8 percent and the thickness of 0.6 mm;
(II) layering and hot pressing:
(1) Primary molding:
(1) glue spreading: three trees are coated between two adjacent eucalyptus veneers in a single-sided glue distribution mode, and the glue distribution amount is 250g/m 2 ；
(2) Assembling the plates: stacking the eucalyptus veneers together, wherein the extending directions of the eucalyptus veneers between every two adjacent eucalyptus veneers are mutually vertical;
(3) cold pressing: aging at room temperature for 12min, and pressurizing to 0.8Mpa/m 2 Maintaining the pressure for 28min, then repairing and cutting the overlapped part, and filling the vacant part;
(4) hot pressing: at 130 deg.C under a pressure of 0.8MPa/m 2 Maintaining the pressure for 8min, and slowly reducing the pressure to 0.15Mpa/m 2 Maintaining the pressure for 3min, and then slowly reducing the pressure to normal pressure to obtain a plate blank;
(2) Preserving health, sanding and thickness setting: stacking the plate blanks, carrying out flat pressing for 3 days by using a weight of 250kg for curing, then uniformly sanding two surfaces of the plate blanks to fix the thickness, taking sand flattening as a standard, and controlling the tolerance to be +/-0.2 mm;
(3) And (3) secondary molding:
(1) glue spreading: three trees are coated between two adjacent eucalyptus veneers or eucalyptus veneers and plate blanks in a single-side glue distribution mode by formaldehyde-free glue, and the glue distribution amount is 230g/m 2 ；
(2) Assembling the plates: two layers of eucalyptus veneers, a plate blank and two layers of eucalyptus veneers are sequentially stacked together from bottom to top, and the extending directions of every two adjacent eucalyptus veneers or the eucalyptus veneers and the plate blank are mutually vertical;
(3) cold pressing: aging at room temperature for 13min, and pressurizing to 0.6Mpa/m 2 Maintaining the pressure for 32min; then, trimming the overlapped part and filling the vacant part;
(4) hot pressing: at 125 deg.C under a pressure of 1.0MPa/m 2 Maintaining the pressure for 12min, and slowly reducing the pressure to 0.55Mpa/m 2 Maintaining the pressure for 2min, and then slowly reducing the pressure to normal pressure to obtain the substrate;
(4) Curing, trimming, sanding and thickness setting: stacking the substrates, carrying out flat pressing for 7 days by using a weight of 250kg for curing, repairing a substrate assembly, uniformly sanding two surfaces of the substrate assembly to fix the thickness, taking sand flattening as a standard, and controlling the tolerance to be +/-0.2 mm;
(5) And (3) third molding:
stacking and attaching the mixed wood veneers, the substrate assembly and the mixed wood veneers together from bottom to top in sequence, wherein each layer of mixed wood veneer consists of the mixed wood veneers which are parallel to each other, and the extending directions of every two adjacent mixed wood veneers and the substrate assembly are mutually vertical to each other, so that the high-stability solid wood composite floor assembly is obtained;
(III) sealing and isolating coating: coating a standard color bottom layer and a digital spraying decoration layer on the surface of the high-stability solid wood composite floor assembly;
(IV) grooving tenons: the opposite end surfaces of the high-stability solid wood composite floor assembly are respectively provided with a groove and a tenon, and the adjacent high-stability solid wood composite floors can be mutually matched and connected through the groove and the tenon;
(V) surface coating: carrying out surface coating on the high-stability solid wood composite floor assembly;
(VI) edge sealing treatment: and (4) carrying out edge sealing treatment on the high-stability solid wood composite floor assembly subjected to surface coating, so as to obtain the high-stability solid wood composite floor.
The step (IV) of slotting tenons is specifically as follows: the grooves and the tenons on the end faces with the opposite long edges between the high-stability solid wood composite floor assembly are matched with each other in a flat buckling mode, and the grooves and the tenons on the end faces with the opposite short edges are matched with each other in a buckling mode.
The step (IV) of slotting tenons is specifically as follows: the long-edge grooves 1 and the long-edge tenons 2 are respectively arranged on the two long-edge end faces of the high-stability solid wood composite floor assembly, the long-edge grooves 1 and the long-edge tenons 2 extend along the long edges, the long-edge tenons 2 extend out of the outer sides of the long-edge end faces and are perpendicular to the extending direction of the long edges, and the long-edge grooves 1 and the long-edge tenons 2 of adjacent high-stability solid wood composite floor pieces can be matched with each other;
the top of one short edge end face of the high-stability solid wood composite floor assembly is of a two-layer step structure, the step A3 extends along the extension direction of the short edge, the upper layer step A3-1 protrudes out of the high-stability solid wood composite floor assembly compared with the lower layer step A3-2, the bottom of the short edge end face is provided with a short edge tenon 5 protruding towards the outside of the short edge end face, the short edge tenon 5 extends along the extension direction of the short edge, and the outer edge of the short edge tenon 5 facing one side face of the step A3 is provided with a protruding strip A5-1 protruding towards the direction of the upper layer step A3-1 and extending along the short edge; a clamping groove A6 is formed between the step A3 and the short edge tenon 5; the top of the end face of the other short edge is of a two-layer step structure, the step B4 extends along the short edge, the lower-layer step B4-2 protrudes out of the assembly of the high-stability solid wood composite floor compared with the upper-layer step B4-1, a convex strip B4-2-1 protruding in the direction back to the upper-layer step B4-1 and extending along the short edge is arranged at the outer edge of one side face of the upper-layer step B4-1 of the lower-layer step B4-2, and a clamping groove B7 is formed between the convex strip B4-2-1 and the end face of the short edge; the adjacent high-stability solid wood composite floor assembly is mutually matched through the clamping connection of the lower-layer step B4-2, the convex strip B4-2-1 and the clamping groove A6 and the clamping connection of the convex strip A5-1 and the clamping groove B7.
The step (II) of layered hot pressing also comprises the following steps: in the first forming, the second forming and the third forming, the smooth grain surfaces of the eucalyptus single plates or the mixed wood single plates at the end surfaces of the long sides and the short sides of the plate blank, the base plate assembly and the high-stability solid wood composite floor assembly face outwards.
The step (III) comprises the following steps:
(1) Coating a standard color bottom layer: treating the surface of the high-stability solid wood composite floor assembly, coating putty on the surface of the high-stability solid wood composite floor assembly in a roller coating mode, and quickly drying by infrared rays;
(2) And (3) digitally spraying a decorative layer, namely directly spraying and printing a digital decorative picture on the surface of the high-stability solid wood composite floor assembly subjected to the coating standard color bottom layer treatment by adopting an intelligent digital printer and high color retention ink.
The surface coating step (V) comprises the following steps:
(1) Coating of high-transparency UV primer: coating 5 layers of high-transparency UV primer on the surface of the high-stability solid wood composite floor assembly subjected to grooving and tenoning in a roller coating or curtain coating mode;
(2) Coating an anti-yellowing UV finish: and coating 5 layers of yellowing-resistant UV finish paint on the surface of the high-stability solid wood composite floor assembly after the high-transparency UV primer is coated in a rolling coating or curtain coating mode.
The edge sealing treatment in the step (six) comprises the following specific steps: spraying molten waterproof beeswax to the four end faces of the surface-coated high-stability solid wood composite floor assembly, wherein the spraying amount is 40g/m 2 Thus obtaining the high-stability solid wood composite floor.
The temperature of the molten honey guard wax was 70 ℃.
Example 3
As shown in fig. 1-2, the preparation method of the high-stability solid wood composite floor mainly comprises the following steps in sequence:
material selection:
selecting eucalyptus veneers with the water content of 12 percent and the thickness of 2.2mm and miscellaneous wood veneers with the water content of 14 percent and the thickness of 0.4 mm;
(II) layering and hot pressing:
(1) Primary molding:
(1) glue spreading: three trees are coated between two adjacent eucalyptus veneers in a single-sided glue distribution mode, and the glue distribution amount is 350g/m 2 ；
(2) Assembling the plates: the eucalyptus veneers are stacked together, and the extending directions of the eucalyptus veneers between every two adjacent eucalyptus veneers are mutually vertical;
(3) cold pressing: aging at room temperature for 15min, and pressurizing to 0.6Mpa/m 2 Maintaining the pressure for 32min, then repairing and cutting the overlapped part, and filling the vacant part;
(4) hot pressing: at 125 deg.C under a pressure of 1.0MPa/m 2 Maintaining the pressure for 6min, and slowly reducing the pressure to 0.25Mpa/m 2 Maintaining the pressure for 2min, and then slowly reducing the pressure to normal pressure to obtain a plate blank;
(2) Health preserving, sanding and thickness fixing: stacking the plate blanks, carrying out flat pressing for 5 days by using a weight of 220kg for curing, and then uniformly sanding two surfaces of the plate blanks to fix the thickness, wherein the sand leveling is taken as a standard, and the tolerance is controlled within +/-0.2 mm;
(3) And (3) secondary molding:
(1) glue spreading: three trees are coated between two adjacent eucalyptus veneers or eucalyptus veneers and plate blanks in a single-side glue distribution mode by aldehyde-free glue, and the glue distribution amount is 210g/m 2 ；
(2) Assembling the plates: two layers of eucalyptus veneers, a plate blank and two layers of eucalyptus veneers are sequentially stacked together from bottom to top, and the extending directions of every two adjacent eucalyptus veneers or the eucalyptus veneers and the plate blank are mutually vertical;
(3) cold pressing: aging at room temperature for 15min, and pressurizing to 0.8Mpa/m 2 Maintaining the pressure for 28min; then, trimming the overlapped part and filling the vacant part;
(4) hot pressing: at 130 deg.C under a pressure of 0.8MPa/m 2 Maintaining the pressure for 15min, and slowly reducing the pressure to 0.45Mpa/m 2 Maintaining the pressure for 3min, and then slowly reducing the pressure to normal pressure to obtain the substrate;
(4) Curing, trimming, sanding and thickness setting: stacking the substrates, flatly pressing for 5 days by using a weight of 220kg for curing, repairing the substrate assembly, uniformly sanding two surfaces of the substrate assembly to fix the thickness, taking sand flatness as a standard, and controlling the tolerance to be +/-0.2 mm;
(5) And (3) third molding:
stacking and attaching the mixed wood veneers, the substrate assembly and the mixed wood veneers together from bottom to top in sequence, wherein each layer of mixed wood veneer consists of the mixed wood veneers which are parallel to each other, and the extending directions of every two adjacent mixed wood veneers and the substrate assembly are mutually vertical to each other, so that the high-stability solid wood composite floor assembly is obtained;
(III) sealing and isolating coating: coating a standard color bottom layer and a digital spraying decoration layer on the surface of the high-stability solid wood composite floor assembly;
(IV) grooving tenons: the opposite end surfaces of the high-stability solid wood composite floor assembly are respectively provided with a groove and a tenon, and the adjacent high-stability solid wood composite floors can be mutually matched and connected through the groove and the tenon;
(V) surface coating: carrying out surface coating on the high-stability solid wood composite floor assembly;
(VI) edge sealing treatment: and (4) carrying out edge sealing treatment on the high-stability solid wood composite floor assembly subjected to surface coating, so as to obtain the high-stability solid wood composite floor.
The step (IV) of slotting tenons is specifically as follows: the grooves and the tenons on the end faces with the opposite long edges between the high-stability solid wood composite floor assembly are matched with each other in a flat buckling mode, and the grooves and the tenons on the end faces with the opposite short edges are matched with each other in a buckling mode.
The step (IV) of slotting tenons is specifically as follows: the long-edge grooves 1 and the long-edge tenons 2 are respectively arranged on the two long-edge end faces of the high-stability solid wood composite floor assembly, the long-edge grooves 1 and the long-edge tenons 2 extend along the long edges, the long-edge tenons 2 extend out of the outer sides of the long-edge end faces and are perpendicular to the extending direction of the long edges, and the long-edge grooves 1 and the long-edge tenons 2 of adjacent high-stability solid wood composite floor pieces can be matched with each other;
the top of one short edge end face of the high-stability solid wood composite floor assembly is of a two-layer step structure, the step A3 extends along the extension direction of the short edge, the upper layer step A3-1 protrudes out of the high-stability solid wood composite floor assembly compared with the lower layer step A3-2, the bottom of the short edge end face is provided with a short edge tenon 5 protruding towards the outside of the short edge end face, the short edge tenon 5 extends along the extension direction of the short edge, and the outer edge of the short edge tenon 5 facing one side face of the step A3 is provided with a protruding strip A5-1 protruding towards the direction of the upper layer step A3-1 and extending along the short edge; a clamping groove A6 is formed between the step A3 and the short edge tenon 5; the top of the end face of the other short edge is of a two-layer step structure, the step B4 extends along the short edge, the lower-layer step B4-2 protrudes out of the assembly of the high-stability solid wood composite floor compared with the upper-layer step B4-1, a convex strip B4-2-1 protruding in the direction back to the upper-layer step B4-1 and extending along the short edge is arranged at the outer edge of one side face of the upper-layer step B4-1 of the lower-layer step B4-2, and a clamping groove B7 is formed between the convex strip B4-2-1 and the end face of the short edge; the adjacent high-stability solid wood composite floor assembly is mutually matched through the clamping connection of the lower-layer step B4-2, the convex strip B4-2-1 and the clamping groove A6 and the clamping connection of the convex strip A5-1 and the clamping groove B7.
The step (II) of layered hot pressing also comprises the following steps: in the first forming, the second forming and the third forming, the smooth grain surfaces of the eucalyptus single plates or the mixed wood single plates at the end surfaces of the long sides and the short sides of the plate blank, the base plate assembly and the high-stability solid wood composite floor assembly face outwards.
The step (III) comprises the following steps:
(1) Coating a standard color bottom layer: treating the surface of the high-stability solid wood composite floor assembly, coating putty on the surface of the high-stability solid wood composite floor assembly in a roller coating mode, and quickly drying by infrared rays;
(2) And (3) digitally spraying a decorative layer, namely directly spraying and printing a digital decorative picture on the surface of the high-stability solid wood composite floor assembly subjected to the coating standard color bottom layer treatment by adopting an intelligent digital printer and high color retention ink.
The surface coating step (V) comprises the following steps:
(1) Coating of high-transparency UV primer: coating 6 layers of high-transparency UV primer on the surface of the high-stability solid wood composite floor assembly subjected to grooving and tenoning in a roller coating or curtain coating mode;
(2) Coating an anti-yellowing UV finish: and 6 layers of yellowing-resistant UV finish paint are coated on the surface of the high-stability solid wood composite floor assembly after the high-transparency UV primer is coated in a rolling coating or curtain coating mode.
The edge sealing treatment in the step (six) comprises the following specific steps: spraying molten waterproof beeswax to the four end faces of the surface-coated high-stability solid wood composite floor assembly, wherein the spraying amount is 60g/m 2 Thus obtaining the high-stability solid wood composite floor.
The temperature of the molten honey guard wax was 80 ℃.
Experimental data:
1. detection of main performance of high-stability solid wood composite floor paint film
The detection method comprises the following steps: detection is carried out according to GB/T18103-2013
The detection results are as follows:
TABLE 1 detection result of main performance of paint film of high-stability solid wood composite floor
Figure BDA0003583013360000131
2. High-stability solid wood composite floor performance detection
The detection method comprises the following steps:
1. heat-resistant dimensional stability: placing the test piece into an air-blast drying oven with the temperature of (80 +/-2) DEG C to ensure air circulation, treating the test piece (24 +/-0.25) h, taking out the test piece, placing the test piece at the room temperature condition, and measuring the length of the central line of the test piece at the original line position within 10 min;
2. moisture-resistant dimensional stability: placing the test piece into a constant temperature and humidity box with the temperature of (40 +/-2) DEG C and the relative humidity of (90 +/-3)% for processing (24 +/-0.25) h, taking out the test piece, placing the test piece under the condition of room temperature, and measuring the length of the center line of the test piece at the position of the original line within 10 min;
3. color fastness to light: according to the specification of 4.30 in GB/T19657-2013.
The detection results are as follows:
TABLE 2 high-stability solid wood composite floor performance test results
Figure BDA0003583013360000141
As can be seen from tables 1 and 2, the paint film adhesion property of the paint film of the high-stability solid wood composite floor prepared by the preparation method of the high-stability solid wood composite floor meets the national standard GB/T18103-2013, the performances such as surface abrasion resistance, paint film hardness, surface pollution resistance, surface impact resistance, light color fastness (blue wool standard) and the like are superior to the national standard GB/T18103-2013, and the comprehensive performances such as heat-resistant dimensional stability, moisture-resistant dimensional stability and light color fastness of the high-stability solid wood composite floor are superior to those of wood boards such as carbonized wood, plywood and fiberboard, so that the problem of poor dimensional stability can be effectively avoided.
The method for manufacturing the high-stability solid wood composite floor according to the present invention is not limited to the above-mentioned embodiments, and any modification or replacement according to the principles of the present invention should be considered within the scope of the present invention.

Claims (7)

1. A preparation method of a high-stability solid wood composite floor is characterized by comprising the following steps: mainly comprises the following steps which are carried out in sequence:
material selection:
selecting eucalyptus single plates with water content of 8-12% and thickness of 2.2-2.6mm and miscellaneous wood single plates with water content of 8-14% and thickness of 0.4-0.6 mm;
(II) layering and hot pressing:
(1) Primary molding:
(1) glue spreading: coating three trees between two adjacent eucalyptus veneers in a single-sided glue distribution manner, wherein the glue distribution amount is 250-350g/m 2 ；
(2) Assembling the plates: stacking the eucalyptus veneers together, wherein the extending directions of the eucalyptus veneers between every two adjacent eucalyptus veneers are mutually vertical;
(3) cold pressing: aging at room temperature for at least 10min, and keeping the pressure at 0.6-0.8Mpa/m 2 Maintaining the pressure for 28-32min, and then overlapping the partTrimming and cutting are carried out, and the vacant part is filled;
(4) hot pressing: at 125-130 deg.C under 0.8-1.0Mpa/m 2 Maintaining the pressure for 6-8min, and slowly reducing the pressure to 0.15-0.25Mpa/m 2 Maintaining the pressure for 2-3min, and then slowly reducing the pressure to normal pressure to obtain a plate blank;
(2) Health preserving, sanding and thickness fixing: stacking the plate blanks, carrying out flat pressing for 3-5 days by using a weight of more than or equal to 200kg for curing, then uniformly sanding the two surfaces of the plate blanks to fix the thickness, taking sand leveling as a standard, and controlling the tolerance to be +/-0.2 mm;
(3) And (3) secondary molding:
(1) glue spreading: three trees are coated between two adjacent eucalyptus veneers or eucalyptus veneers and plate blanks in a single-side glue distribution mode, and the glue distribution amount is 210-230g/m 2 ；
(2) Assembling the plates: two layers of eucalyptus veneers, a plate blank and two layers of eucalyptus veneers are sequentially stacked together from bottom to top, and the extending directions of every two adjacent eucalyptus veneers or the eucalyptus veneers and the plate blank are mutually vertical;
(3) cold pressing: aging at room temperature for at least 10min, and keeping the pressure at 0.6-0.8Mpa/m 2 Maintaining the pressure for 28-32min; then, repairing and cutting the overlapped part, and filling the vacant part;
(4) hot pressing: at 125-130 deg.C under 0.8-1.0Mpa/m 2 Maintaining the pressure for 12-15min, slowly reducing the pressure to 0.45-0.55Mpa/m 2 Maintaining the pressure for 2-3min, and then slowly reducing the pressure to normal pressure to obtain the substrate;
(4) Curing, trimming, sanding and thickness setting: stacking the substrates, carrying out flat pressing for 5-7 days by a weight of more than or equal to 200kg for curing, then repairing the substrate assembly, and then uniformly sanding the two surfaces of the substrate assembly to set the thickness, wherein the sanding is used as a standard, and the tolerance is controlled to be +/-0.2 mm;
(5) And (3) third molding:
stacking and attaching the mixed wood veneers, the substrate assembly and the mixed wood veneers together from bottom to top in sequence, wherein the mixed wood veneers between the adjacent substrate assemblies are arranged in parallel, and the extending directions of every two adjacent mixed wood veneers and the substrate assembly are mutually vertical, so that the high-stability solid wood composite floor assembly is obtained;
(III) sealing and isolating coating: coating a standard color bottom layer and a digital spraying decoration layer on the surface of the high-stability solid wood composite floor assembly;
(IV) grooving tenons: the opposite end surfaces of the high-stability solid wood composite floor assembly are respectively provided with a groove and a tenon, and the adjacent high-stability solid wood composite floors can be mutually matched and connected through the groove and the tenon;
(V) surface coating: carrying out surface coating on the high-stability solid wood composite floor assembly;
(VI) edge sealing treatment: performing edge sealing treatment on the surface-coated high-stability solid wood composite floor assembly to obtain the high-stability solid wood composite floor;
the step (II) of layered hot pressing also comprises the following steps: in the first forming, the second forming and the third forming, the smooth grain surfaces of the eucalyptus single plates or the mixed wood single plates at the end surfaces of the long sides and the short sides of the plate blank, the base plate assembly and the high-stability solid wood composite floor assembly face outwards.
2. The method for preparing a high-stability solid wood composite floor according to claim 1, wherein the method comprises the following steps: the step (IV) of slotting tenons is specifically as follows: the grooves and the tenons on the end faces with the opposite long edges between the high-stability solid wood composite floor assembly are matched with each other in a flat buckling mode, and the grooves and the tenons on the end faces with the opposite short edges are matched with each other in a buckling mode.
3. The method for preparing a high-stability solid wood composite floor according to claim 2, wherein the method comprises the following steps: the step (IV) of slotting tenons is specifically as follows: the long-edge grooves (1) and the long-edge tenons (2) are respectively arranged on the two long-edge end faces of the high-stability solid wood composite floor assembly, the long-edge grooves (1) and the long-edge tenons (2) extend along the long edges, the long-edge tenons (2) extend out of the side of the long-edge end faces and are perpendicular to the extending direction of the long edges, and the long-edge grooves (1) and the long-edge tenons (2) of adjacent high-stability solid wood composite floor pieces can be matched with each other;
the top of one short edge end face of the high-stability solid wood composite floor assembly is provided with a step A (3) with a two-layer step-shaped structure, the step A (3) extends along the extension direction of the short edge, the upper layer step A (3-1) protrudes out of the high-stability solid wood composite floor assembly compared with the lower layer step A (3-2), the bottom of the short edge end face is provided with a short edge tenon (5) protruding towards the outer side of the short edge end face, the short edge tenon (5) extends along the extension direction of the short edge, and the outer edge of the short edge tenon (5) facing one side face of the step A (3) is provided with a convex strip A (5-1) protruding towards the direction of the upper layer step A (3-1) and extending along the short edge; a clamping groove A (6) is formed between the step A (3) and the tenon (5) on the short side; the top of the end face of the other short side is provided with a step B (4) with a two-layer step structure, the step B (4) extends along the short side, the lower layer step B (4-2) protrudes out of the high-stability solid wood composite floor assembly compared with the upper layer step B (4-1), the outer edge of one side face of the upper layer step B (4-1) back to the lower layer step B (4-2) is provided with a raised strip B (4-2-1) protruding towards the upper layer step B (4-1) and extending along the short side, and a clamping groove B (7) is formed between the raised strip B (4-2-1) and the end face of the short side; the adjacent high-stability solid wood composite floor assembly is mutually matched through the clamping connection of the lower-layer step B (4-2), the convex strip B (4-2-1) and the clamping groove A (6) and the clamping connection of the convex strip A (5-1) and the clamping groove B (7).
4. The method for preparing a high-stability solid wood composite floor according to claim 1, wherein the method comprises the following steps: the step (III) comprises the following steps:
(1) Coating a standard color bottom layer: treating the surface of the high-stability solid wood composite floor assembly, coating putty on the surface of the high-stability solid wood composite floor assembly in a roller coating mode, and quickly drying by infrared rays;
(2) And (3) digitally spraying a decorative layer, namely directly spraying and printing a digital decorative picture on the surface of the high-stability solid wood composite floor assembly subjected to the coating standard color bottom layer treatment by adopting an intelligent digital printer and high color retention ink.
5. The method for preparing a high-stability solid wood composite floor according to claim 1, wherein the method comprises the following steps: the surface coating step (V) comprises the following steps:
(1) Coating of high-transparency UV primer: coating at least 4 layers of high-transparency UV (ultraviolet) primer on the surface of the high-stability solid wood composite floor assembly subjected to grooving and tenoning in a roller coating or curtain coating mode;
(2) Coating yellowing-resistant UV finishing paint: and coating at least 4 layers of yellowing-resistant UV finish paint on the surface of the high-stability solid wood composite floor assembly coated with the high-transparency UV primer in a rolling coating or curtain coating mode.
6. The method for preparing a high-stability solid wood composite floor according to claim 1, wherein the method comprises the following steps: the edge sealing treatment in the step (six) comprises the following specific steps: and spraying molten waterproof beeswax to the four end surfaces of the surface-coated high-stability solid wood composite floor assembly, wherein the spraying amount is 40-60g/m & lt 2 & gt, so that the high-stability solid wood composite floor is obtained.
7. The method for preparing a high-stability solid wood composite floor according to claim 6, wherein the method comprises the following steps: the temperature of the molten honey-proof wax is 70-80 ℃.
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CN106836726A (en) * 2017-02-17 2017-06-13 南京久扬木业有限公司 One kind lock multi-layer solid wood composite floor and preparation method thereof
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KR102242338B1 (en) * 2020-10-27 2021-04-21 이건산업 주식회사 Flooring finished with UV Oil paint and its manufacturing method

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CN102582246A (en) * 2011-12-20 2012-07-18 南京林业大学 Ultraviolet (UV) digital jet printing manufacturing method of plate-type components of floor boards and furniture
KR101317959B1 (en) * 2013-04-16 2013-10-16 주식회사 케이디우드테크 Method for producing flooring board having decreased density deviation, and flooring board produced thereby
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