CN103085130A - Plywood for container flooring and production method of plywood - Google Patents

Abstract

The invention relates to a plywood for a container floor and a production method thereof. It is formed by hot-pressing multi-layer wooden veneers and oriented structure panels arranged in a staggered manner. The oriented structure panels include at least two layers. The thickness is 8-18mm, and at least one layer of the wood veneer is sandwiched between two adjacent layers of the oriented structure board; the face layer and the bottom layer of the plywood are both wood veneers; the wood veneer and the The total number of layers of oriented structural panels shall not exceed 13 layers. The plywood for the container floor of the present invention uses plantation wood veneers and directional structural panels to compound the plywood for the container floor, which greatly reduces the number of composite layers of the plywood, saves the amount of glue used, and solves the shortage of resources and high production costs. And problems such as unsatisfactory appearance.

Description

Plywood for container floor and production method thereof

technical field

The invention relates to a plywood for a container bottom plate and a production method thereof, in particular to a plywood for a container bottom plate composed of a wooden veneer and an oriented structure plate and a production method thereof.

Background technique

In the existing container structure, the container bottom plate is the main load-bearing part, so higher requirements are put forward for its strength and good appearance quality. For a long time, the plywood used for the container floor has been made of tropical broad-leaved hardwoods with high strength characteristics represented by cloned wood. In production, large-diameter logs have been rotary cut into veneers, and multi-layer veneers are formed. Pressed into plywood. Because the container floor industry relies heavily on large-diameter tropical broad-leaved hardwoods, which have a long production cycle (more than 100 years), excessive felling will seriously affect the ecological environment of tropical rainforests. At the same time, due to the lack of resources, tropical hardwoods such as cloned wood are increasingly in short supply, and their prices are skyrocketing. If this kind of tropical primary forest hardwood is used in large quantities, it is not conducive to the sustainable development of the environment, nor is it conducive to the cost control of enterprises. Therefore, there must be an environmentally friendly low-price material to replace.

At present, in addition to high requirements for the strength of the container bottom plate, container demanders attach great importance to its appearance quality, and often cause customer dissatisfaction due to unavoidable natural defects such as color difference and texture of the clone surface bottom plate or manufacturing defects of the impregnated film , therefore, there must be a solution to completely solve the appearance of the product.

In addition, the production of container floor is labor-intensive. For a long time, the production efficiency has been low, and the labor cost and manufacturing cost are high. Today, with the rising labor cost, a new production operation method with high production efficiency must be replaced. , to ensure the sustainable development of the company.

Contents of the invention

The first purpose of the present invention is to provide a plywood for container floor made of artificial forest wood veneer and oriented structural board, aiming at the defects of lack of resources, high production cost and unsatisfactory appearance in the production of plywood for container floor in the prior art. Plywood not only meets the requirements of container thickness and service strength, but also reduces the number of composite layers and production costs, and at the same time solves the problems of lack of resources and unsatisfactory appearance.

The second purpose of the present invention is to provide a plywood plywood from plantation forest and oriented structure board to form a plywood for container floor in view of the defects of lack of resources, high production cost and unsatisfactory appearance in the production of plywood for container floor in the prior art. The production method of the plywood saves the amount of glue and reduces the production cost.

For realizing the first purpose, the technical scheme adopted in the present invention is:

A kind of plywood for the bottom plate of a container, which is made of multi-layer wooden veneers and oriented structure boards arranged alternately and then hot-pressed. At least one layer of the wood veneer is sandwiched between two adjacent layers of the oriented structure board; the face layer and bottom layer of the plywood are both wood veneers; the total number of layers of the wood veneer and the oriented structure board No more than 13 floors.

In the above-mentioned plywood for the bottom plate of the container, the wooden veneer is made of non-cloned wood, and the panel layer of the plywood is sprayed with water-based environmental protection paint of the color of cloned wood or glass fiber reinforced resin polymer composite material or phenolic impregnated non-woven fabric or Phenolic impregnated non-woven paper facing.

In the above-mentioned plywood for the bottom of the container, the material used for the wooden veneer is at least one of poplar, pine, eucalyptus, or wood with a forest certification certificate, and the oriented structure board includes 2 to 3 layers. The material used for the oriented structural board is at least one of poplar, pine, eucalyptus, hard miscellaneous wood, soft miscellaneous wood or branch wood.

In the above-mentioned plywood for the container floor, the total number of layers of the wood veneer and the oriented structure board is 9 layers, and the boards adjacent to the panel layer and the bottom layer are all wood veneers along the grain.

In the above-mentioned plywood for the bottom plate of a container, the way of assembling the wooden veneer and the oriented structure board can be: wood veneer along the grain, wood veneer along the grain, wood veneer with horizontal grain, oriented structure board, horizontal grain Wood veneer, oriented structure board, horizontal grain wood veneer, along grain wood veneer, along grain wood veneer. In this way of forming blanks, the single side of the wooden veneer located in the panel layer and the bottom layer is glued, and the glue used is phenolic resin with a solid content of 40% to 52% or other environmentally friendly glue with good weather resistance, and the glue amount is 160-190g/cm2; the horizontal-grained wooden veneers are all glued on both sides, the glue used is phenolic resin with a solid content of 40-52% or other environmentally friendly glue with good weather resistance, and the amount of glue is 330-380g/cm2 cm2; the two layers of wood veneer along the grain and the oriented structure board adjacent to the panel layer and the bottom layer are not glued.

In the above-mentioned plywood for the bottom plate of a container, the way of assembling the wooden veneer and the oriented structural board may be: wooden veneer along the grain, wooden veneer along the grain, oriented structural board, horizontal grained wooden veneer, or along the grain Wood veneer, horizontal grain wood veneer, oriented structure board, along grain wood veneer, along grain wood veneer. In this method of forming blanks, the two layers of wood veneers along the grain adjacent to the panel layer and the bottom layer and the wood veneers with horizontal grains are double-sidedly coated with glue, and the amount of glue is 330-380g/cm2; and The wood veneers along the grain on the face plate layer and the bottom plate layer, the wood veneers along the grain on the middle core layer and the oriented structure board are not glued.

In the above-mentioned plywood for container bottom plate, the way of forming the wooden veneer and the oriented structure board can be: wood veneer along the grain, wood veneer along the grain, oriented structure board, horizontal grain wood veneer, oriented structure Board, horizontal grain wood veneer, oriented structure board, along grain wood veneer, along grain wood veneer. In this method of forming blanks, the two layers of wood veneers along the grain adjacent to the panel layer and the bottom layer and the wood veneers with horizontal grains are double-sidedly coated with glue, and the amount of glue is 330-380g/cm2; and The wood veneers along the grain of the panel layer and the bottom layer and the oriented structure board are not glued.

For realizing the second purpose, the technical scheme adopted in the present invention is:

A method for producing plywood for container bottom plates, comprising the steps of making wooden veneers, polishing treatment of oriented structural panels, glue laying and billet assembly, hot pressing, edge trimming, sanding, tenoning, finishing treatment, inspection and storage, etc., in:

a. The step of polishing the oriented structure plate is: sanding off the pre-cured layer on the surface of the oriented structure plate that affects the bonding quality, and polishing to a specified thickness of 8-18mm according to the requirements of the billet assembly;

b. The step of distributing glue is: coating some of the above-mentioned wooden veneers with glue that meets the requirements for the use of container bottom plates, the amount of glue for one-sided cloth is 160-190g/cm2, and the amount of glue for double-sided cloth is 330-380g/cm2 , the glue is phenolic resin or other environmentally friendly glue with good weather resistance, and the oriented structure board is not covered with glue;

c. The blank assembly step is as follows: starting from the bottom layer, that is, the bottom layer, according to the blank assembly method, layer by layer, layer by layer, and stack up until the top layer, that is, the panel layer, to obtain a rough board;

d. The hot pressing step is: under the conditions of temperature 120°C-155°C and pressure 1.6-3.5MPa, heat-press the assembled blanks for 15-30min, then depressurize and discharge in stages Steam, pressure relief;

e. The finishing treatment is as follows: the panel layer, board edge and tenon position of the plywood obtained through the tenoning step are sprayed with water-based environmental protection paint of the color of cloned wood or impregnated with glass fiber reinforced resin polymer composite material or phenolic formaldehyde-free Woven or phenolic impregnated non-woven paper facing.

In the above-mentioned production method of plywood for container bottom plates, the way of forming the wooden veneer and the oriented structure board can be: wood veneer along the grain, wood veneer along the grain, wood veneer with horizontal grain, or oriented structure board , Horizontal grain wood veneer, oriented structure board, horizontal grain wood veneer, along grain wood veneer, along grain wood veneer. In this way of forming blanks, the single side of the wooden veneer located in the panel layer and the bottom layer is glued, and the glue used is phenolic resin with a solid content of 40% to 52% or other environmentally friendly glue with good weather resistance, and the glue amount is 160-190g/cm2; the horizontal-grained wooden veneers are all glued on both sides, the glue used is phenolic resin with a solid content of 40-52% or other environmentally friendly glue with good weather resistance, and the amount of glue is 330-380g/cm2 cm2; the two layers of wood veneer along the grain and the oriented structure board adjacent to the panel layer and the bottom layer are not glued.

In the above-mentioned production method of plywood for container bottom plates, the way of forming the wooden veneer and the oriented structure board can be: wood veneer along the grain, wood veneer along the grain, oriented structure board, and horizontal grain wood veneer , Along the grain wood veneer, horizontal grain wood veneer, oriented structure board, along the grain wood veneer, along the grain wood veneer. In this method of forming blanks, the two layers of wood veneers along the grain adjacent to the panel layer and the bottom layer and the wood veneers with horizontal grains are double-sidedly coated with glue, and the amount of glue is 330-380g/cm2; and The wood veneers along the grain on the face plate layer and the bottom plate layer, the wood veneers along the grain on the middle core layer and the oriented structure board are not glued.

In the above-mentioned production method of plywood for container bottom plates, the way of forming the wooden veneer and the oriented structure board can be: wood veneer along the grain, wood veneer along the grain, oriented structure board, and horizontal grain wood veneer , Oriented structure board, horizontal grain wood veneer, oriented structure board, along grain wood veneer, along grain wood veneer. In this method of forming blanks, the two layers of wood veneers along the grain adjacent to the panel layer and the bottom layer and the wood veneers with horizontal grains are double-sidedly coated with glue, and the amount of glue is 330-380g/cm2; and The wood veneers along the grain of the panel layer and the bottom layer and the oriented structure board are not glued.

In the above-mentioned production method of plywood for container floor, other steps such as trimming, sanding, tenoning, inspection and warehousing are consistent with the traditional production method of plywood for container floor, and will not be repeated here.

The present invention has the following beneficial effects:

1. The plywood for the container floor of the present invention has the characteristics of environmental protection in the use of materials: the container floor is produced by compounding the plantation wood veneer and the directional structural board, and the original forest hardwood at the cost of destroying the environment is no longer used, but eucalyptus is used Wood, poplar, pine and other thinned forests, fast-growing forests or wood veneers with forest certification certificates, and oriented structural panels made of materials such as poplar, pine, eucalyptus, hard miscellaneous wood, soft miscellaneous wood, or branch wood (with glue) The adhesive is environmentally friendly and formaldehyde-free PMDI glue), which solves the problem of resource scarcity.

2. The plywood for the bottom plate of the container of the present invention draws on the "sandwich structure" blanking method of glass fiber composite materials in structure, greatly reducing the number of plywood composite layers from the original 21 layers to 13 layers and below. Its advantage is that the implementation of the production method of plywood is more suitable for the use of automatic assembly lines, which improves production efficiency, reduces labor costs, and at the same time makes it easier to ensure product quality and greatly reduces manufacturing defects, such as overlapping, centrifugal core, etc.; the overall compression rate The reduction makes it easier to ensure the thickness of the product.

Three, the plywood for the container floor of the present invention, due to the substantial reduction of the number of layers of glue—the number of layers of glue for the plywood for the conventional 21-layer container floor is 10 layers, and the number of layers of glue for the plywood for the container floor of the present invention is 4 layers , The use of phenolic glue has dropped by 60%, producing a more environmentally friendly container floor at a lower cost.

4. The plywood for the container floor of the present invention no longer uses cloned wood for the panel layer and the floor layer, but uses relatively cheap materials or those with forest certification certificates, such as European beech and other veneers, and uses water-based environmental protection with the color of cloned wood Lacquer spray to harden and decorate the surface. The use of water-based paint for plywood for container floor is "the first environmental protection initiative to eat crabs" in the container floor industry. Paint, namely solvent-based polyester paint or nitro paint contains benzene, toluene, xylene, esters, ketones and other organic volatiles and highly toxic free TDI toxic heavy metals, while the thinner of water-based paint is water, volatile organic There are very few solvents, only 5-10% of solvent-based paints, no curing agent is used for film formation, so there is no volatilization of free TDI, and water-based paints are water-resistant, wear-resistant, aging-resistant, yellowing-resistant, fast-drying, and easy to use Convenience and other features, so water-based paint is a real green product.

The present invention adopts the water-based environmental protection paint spraying panel of cloning color and the water-based environmental protection paint coating plywood panel layer, end face and mortise with stronger coverage, intention is: one, considering the water-absorbing expansion problem of OSB directional structure board, this measure It is to meet the waterproof performance of the plywood used for the OSB composite container floor and improve the service life of the floor; second, the use of cloned wood color is intended to restore the visual dependence of industry personnel on cloned wood, and to highlight the uniformity of the appearance of the product panel and board edges, thoroughly Solve the quality problems such as color difference and grease of the bottom plate; thirdly, the cost of painting the bottom plate is eliminated, and the goal of win-win with customers is achieved, making it easier for customers to accept.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic diagram of the blank structure of embodiment 1 of the plywood for container floor of the present invention.

Fig. 2 is a schematic diagram of the blank structure of Example 2 of the plywood for the container floor of the present invention.

Fig. 3 is a schematic diagram of the blank structure of Embodiment 3 of the plywood for container bottom plate of the present invention.

Fig. 4 is a simplified process flow diagram of the method for preparing plywood for container bottom plates according to the present invention.

Detailed ways

The present invention will be further elaborated below in conjunction with the accompanying drawings.

The plywood for the bottom plate of the container of the present invention is formed by staggered arrangement of multi-layer wooden veneers and oriented structural panels and then hot-pressed. The directional structural panels include at least two layers, and the thickness of the directional structural panels is 8-18 mm. At least one layer of the wood veneer is sandwiched between two adjacent layers of the oriented structure board; the face layer and the bottom layer of the plywood are both wood veneers, and the thickness of the wood veneer is 1.0-1.8mm; The total number of layers of the wood veneer and the oriented structural board is not more than 13 layers.

The oriented structure used in the present invention is also called "Oriented Strandboard (OSB, OSB for short)", which is called Ozon board in China. It is a structural board made of flat, narrow and long shavings that have been dried, screened, and adhesives and additives are applied, and then hot-pressed after directional paving. Because it is made of many wood chips laminated together, it has high strength. It has the following performance characteristics: 1. It has high physical and mechanical properties, compact structure and high strength; 2. It has the triple characteristics of anti-deformation, anti-stripping and anti-warping; 3. Anti-corrosion, anti-moth, anti-deformation, flame retardant Strong ability; 4. Complete waterproof performance, can be permanently exposed to the natural environment and humid conditions; 5. The formaldehyde emission is extremely low, which is a real green product. 6. Strong nail-holding power, easy to saw, nail, drill, slot, plan, file or sand; 7. Excellent heat insulation, sound insulation effect, good coating and paint performance.

The forest certification referred to in the present invention is to prove whether the forest has achieved good management through independent evaluation of forest management activities. More authoritative forest certification agencies include FSC, PEFC and so on.

Three embodiments of the present invention are listed below.

[Example 1]

A kind of plywood for the bottom plate of a container, which is a 9-layer symmetrical structure board, wherein 1, 2, 3, 5, 7, 8, and 9 are wooden veneers, and 1, 2, 8, and 9 are wooden veneers along the grain, that is, this The grain direction of the four-layer wood veneer is parallel to the length direction of the plywood; 3, 5, and 7 are horizontal grain wood veneers, that is, the grain direction of the three-layer wood veneer is perpendicular to the length direction of the plywood; for oriented structural panels. Among them, the wooden veneers of the panel layer 1 and the bottom layer 9 are single-sided cloth glue, the horizontal grain wood veneers 3, 5, and 7 are double-sided cloth glue, and the directional structure boards 4, 6 and the wooden veneers 2 and 8 are not clothed with glue .

[Example 2]

A kind of plywood for the bottom plate of a container, which is a symmetrical structural plate with 9 layers, wherein 1, 2, 4, 5, 6, 8, and 9 are wooden veneers, and 1, 2, 5, 8, and 9 are wooden veneers along the grain, That is, the grain direction of these five layers of wood veneers is parallel to the length direction of the plywood; for oriented structural panels. Among them, the wooden veneers 2, 8 along the grain and the wooden veneers 4, 6 with the horizontal grain are double-sided cloth glue, and the directional structure boards 3, 7 and the wood veneers 1, 5, 9 are not glued.

[Example 3]

A kind of plywood for the bottom plate of a container, which is a 9-layer symmetrical structure board, wherein 1, 2, 4, 6, 8, and 9 are wooden veneers, and 1, 2, 8, and 9 are wooden veneers along the grain, that is, the five layers The grain direction of the wood veneer is parallel to the length direction of the plywood; 4 and 6 are horizontal grain wood veneers, that is, the grain direction of the two layers of wood veneer is perpendicular to the length direction of the plywood; the remaining 3, 5, and 7 are directional Structural panels. Among them, the wooden veneers 2, 8 along the grain and the wooden veneers 4, 6 of the horizontal grain are double-sided cloth glue, and the directional structure boards 3, 5, 7 and the wood veneers 1, 9 are not clothed with glue.

In the above three embodiments:

1. The wooden veneers are all made of non-cloned wood, such as poplar, pine, eucalyptus, etc. or wood with forest certification certificates, with a thickness of 1.0-1.8mm. The panel layer is finished with water-based environmental protection paint sprayed with clone wood color or polymer composite materials such as glass fiber reinforced resin or phenolic impregnated non-woven fabric or phenolic impregnated non-woven paper.

2. The oriented structure board is the oriented strand board specially made by the manufacturer, and its pre-cured layer is polished to the specified thickness, and its material is poplar, pine, eucalyptus, hard miscellaneous wood, soft miscellaneous wood or branch wood and other materials at least one of the The number of sheets and the selection of thickness are based on the manufacturing principle of OSB oriented structural board and its internal mechanical distribution. The thinner the thickness, the closer the strength of the core layer is to the strength of the surface layer. Therefore, the thicker the thickness of the OSB board, the greater the difference between the internal and external strength (in the pressure Under certain circumstances), it cannot meet the requirements of the container floor. Therefore, the inventor of this patent obtained through a large amount of experimental data: the use of OSB oriented structural boards with a thickness of 8-18mm and wood veneer composites scientifically and skillfully resolved the problem of large differences between inside and outside; and the use of 2-3 OSB sheets The design method of oriented structure board mainly considers the mechanical characteristics of OSB oriented structure board: due to the process method of OSB oriented structure board - the surface layer is directional paved, and the core layer is randomly paved, resulting in a high density of the surface layer, while the core layer The layer density is only 70-90% of the surface layer, and the shear strength of the core layer decreases with the increase of the thickness of the board. It is not suitable to use the thicker OSB oriented structural board. In order to ensure the stability of the overall strength of the composite floor, it is decided to adopt 2-3 sheets of OSB oriented structure boards with a thickness of 8-18mm and a density of 0.65-0.85g/cm3.

3. The method of forming blanks and the number and thickness of oriented structural panels in the above three embodiments are based on the thickness and strength requirements of the plywood used for the container floor, and are obtained through repeated tests. After testing, the above three structures are used. The strength and hardness test data are: the density is 0.75-0.85g/cm3; the static bending strength along the grain is 95-106MPa, and the static bending strength of the transverse grain is 40-55MPa; the elastic modulus along the grain is 10-12GPa, and the elastic modulus of the transverse grain is 5-6.5GPa, which meets and exceeds the strength and hardness requirements of the national standard for plywood for container floor (GB/T19536-2004).

Here are some test records:

3.1 Matching method of oriented structural board (OSB)

3.2 Relevant detection data of the billet formation method in the present invention

标识定向结构板；“/”表示顺纹木质单板即该木质单板的纹理方向与该胶合板的长度方向平行；“-”表示横纹木质单板即该木质单板的纹理方向与该胶合板的长度方向垂直。in

Identify the oriented structural board; "/" indicates that the grain direction of the wood veneer is parallel to the length direction of the plywood; "-" indicates that the grain direction of the wood veneer is parallel to the length direction of the plywood The length direction is vertical.

It can be seen from the above chart data that the oriented structural board (OSB) selected by the present invention is specially made by the supplier, and all indicators meet the strength requirements of the container floor. Its thickness is 8-18mm, generally 8mm or 11mm or 12mm or 15mm or 18mm, and the number of layers is generally 2-3 layers.

In addition, in the above three examples, the panel layer and the bottom layer are made of non-cloned wood, and the panel layer is finished with water-based paint, and can also be impregnated with polymer composite materials such as glass fiber reinforced resin or cloned wood or phenolic formaldehyde as required. Non-woven fabric (paper) or other environmentally friendly material finishes, while the horizontal or vertical wooden veneer of the center layer can be adjusted to polymer composite materials such as glass fiber reinforced resin or other environmentally friendly materials.

As the flow chart shown in Figure 4, the production method of plywood for container floor of the present invention mainly includes the production of wooden veneer, polishing treatment of oriented structural board, cloth glue, forming blank, hot pressing, trimming, sanding, tenoning, cloning Water-based paint finish treatment, inspection and storage and other steps. The following is a brief description of each step:

1. Wood veneer processing:

The processing process of the wooden veneer is the same as the processing process of the traditional plywood for the container floor, and will not be repeated here.

2. Oriented structural plate polishing treatment:

The oriented structural board (OSB) used in the present invention is specially made by the supplier, so its manufacturing method is omitted. The polishing treatment of the oriented structural plate is to sand off the pre-cured layer on the surface of the oriented structural plate that affects the bonding quality, and polish to the specified thickness of 8-18mm according to the requirements of the billet formation method.

3. Cloth glue and blank assembly:

其中

际识定向结构板；“/”表示顺纹木质单板；“-”表示横纹木质单板。According to embodiment 1 wood veneer and oriented structural board composite blank form:

in

International identification oriented structural board; "/" means wood veneer along the grain; "-" means wood veneer with horizontal grain.

The wooden veneers on the 1st and 9th layers are glued on one side, and the amount of glue is 160-190g/cm2; the wooden veneers on the 3rd, 5th and 7th layers are glued on both sides, and the amount of glue is 330-380g/cm2 , the 4th and 6th layers of oriented structural panels and the 2nd and 8th layers of wood veneer are not glued. The glue uses phenolic resin glue that meets the requirements of the container bottom plate or other environmentally friendly glue with good weather resistance.

After the first layer of wooden veneer is glued on one side, spread the second layer of wooden veneer on the glued surface, then spread the third layer of double-sided glued wooden veneer, and then spread the fourth layer of wood veneer without glue. Layer oriented structural panels, in this way, are arranged to the 9th layer of wood veneer according to the method of process assembly. The wood veneer texture should be consistent with the billet assembly method.

其中

标识定向结构板；“/”表示顺纹木质单板；“-”表示横纹木质单板。According to embodiment 2 wood veneer and oriented structure plate composite blank form:

in

Identify oriented structural board; "/" means wood veneer along grain; "-" means wood veneer with cross grain.

The 2nd, 4th, 6th and 8th layers of wood veneer are double-sided glued, the amount of glue is 330 ~ 380g/cm2, the 3rd and 7th layer of oriented structure board and the 1st, 5th and 9th layer of wood veneer No glue. The glue uses phenolic resin glue that meets the requirements of the container bottom plate or other environmentally friendly glue with good weather resistance.

After placing the first layer of wood veneer without glue, lay the second layer of double-sided glued wood veneer on it, then spread the third layer of oriented structure board without glue, and then spread double-sided cloth Glue the 4th layer of wood veneer, in this way, according to the process of forming blanks, it will be arranged until the 9th layer of wood veneer. The wood veneer texture should be consistent with the billet assembly method.

The way of glue laying and blank assembly in Example 3 is the same as in Example 2, except that the arrangement of the wood veneer and the oriented structure board should be consistent with the way of the blank assembly.

4. The rough plate obtained from the blank assembly is hot-pressed:

Under the conditions of temperature 120°C-155°C and pressure 1.6-3.5MPa, hot-press the preassembled rough plate, keep it for 15-30min, and then depressurize, exhaust and depressurize in stages.

After the hot pressing is completed, edge trimming, sanding, tenoning, cloning wood color water-based paint finish treatment, inspection and storage are carried out. The edge trimming, sanding, tenoning, and inspection and storage are consistent with the plywood used for the traditional container floor. Here Without going into details, only a brief description of the clone wood color water-based paint finish treatment.

5. Cloning wood color water-based paint spraying finish treatment:

The panel layer, board edge and mortise position of the plywood made of wood veneer and oriented structural board are processed by automatic painting and drying lines, and the color is the color of cloned wood.

As mentioned above, the use of water-based paint for plywood for container floors is "the first environmental protection initiative to eat crabs" in the container floor industry. Paint, namely solvent-based polyester paint or nitro paint contains benzene, toluene, xylene, esters, ketones and other organic volatiles and highly toxic free TDI toxic heavy metals, while the thinner of water-based paint is water, volatile organic There are very few solvents, only 5-10% of solvent-based paints, no curing agent is used for film formation, so there is no volatilization of free TDI, and water-based paints are water-resistant, wear-resistant, aging-resistant, yellowing-resistant, fast-drying, and easy to use Convenience and other features, so water-based paint is a real green product.

The present invention adopts the water-based environmental protection paint spraying panel of cloning color and the water-based environmental protection paint coating plywood panel layer, end face and mortise with stronger coverage, intention is: one, considering the water-absorbing expansion problem of OSB directional structure board, this measure It is to meet the waterproof performance of the plywood used for the OSB composite container floor and improve the service life of the floor; second, the use of cloned wood color is intended to restore the visual dependence of industry personnel on cloned wood, and to highlight the uniformity of the appearance of the product panel and board edges, thoroughly Solve the quality problems such as floor color difference and grease; thirdly, the cost of painting the bottom plate is eliminated, and the goal of win-win with customers is achieved, making it easier for customers to accept.

The above content is only a preferred embodiment of the present invention, and is not intended to limit the implementation of the present invention. Those of ordinary skill in the art can easily make corresponding modifications or modifications according to the main concept and spirit of the present invention. Therefore, this The protection scope of the invention shall be determined by the protection scope required by the claims.

Claims (18)

1. composite board for bottom board of container, being staggered by multilayered wood veneer and directional structure board, hot pressing forms after assembly, it is characterized in that: described directional structure board comprises two-layer at least, the thickness of described directional structure board is 8～18mm, accompanies at least the described Wooden veneer of one deck between the described directional structure board of adjacent two layers; Described face veneer layer, backplane level are Wooden veneer; No more than 13 layers of total number of plies of described Wooden veneer and described directional structure board.

2. composite board for bottom board of container according to claim 1, it is characterized in that: described Wooden veneer adopts non-clone's wood, and described face veneer layer adopts aqueous environment protection paint spraying or glass-fibre reinforced resin polymer composite or phenolic impregnated nonwoven or the phenolic impregnated non-woven paper facing of the wooden color of clone.

3. composite board for bottom board of container according to claim 2 is characterized in that: described Wooden veneer material therefor is at least a in poplar, pine, Eucalyptus or the timber with Forest Certification certificate.

4. composite board for bottom board of container according to claim 2, it is characterized in that: described directional structure board comprises 2～3 layers, described directional structure board material therefor is at least a in poplar, pine, Eucalyptus, hardwood, soft weedtree or brush wood.

5. according to claim 3 or 4 described composite board for bottom board of container, it is characterized in that: total number of plies of described Wooden veneer and described directional structure board is 9 layers, is the rift grain Wooden veneer with described panel layer, sheet material that backplane level is adjacent.

6. composite board for bottom board of container according to claim 5, it is characterized in that: described Wooden veneer and described directional structure board assemble pattern are: rift grain Wooden veneer, rift grain Wooden veneer, band Wooden veneer, directional structure board, band Wooden veneer, directional structure board, band Wooden veneer, rift grain Wooden veneer, rift grain Wooden veneer.

7. composite board for bottom board of container according to claim 6, it is characterized in that: the described Wooden veneer facecloth glue that is positioned at panel layer and backplane level, glue used is the phenolic resins of 40～52% solids contents or other weatherabilities environmental protection glue preferably, and cloth glue amount is 160～190g/cm2; Described band Wooden veneer all carries out double-sided cloth glue, and glue used is the phenolic resins of 40～52% solids contents or other weatherabilities environmental protection glue preferably, and cloth glue amount is 330～380g/cm2; The two-layer rift grain Wooden veneer adjacent with described panel layer, backplane level and described directional structure board be cloth glue not all.

8. composite board for bottom board of container according to claim 5, it is characterized in that: described Wooden veneer and described directional structure board assemble pattern are: rift grain Wooden veneer, rift grain Wooden veneer, directional structure board, band Wooden veneer, rift grain Wooden veneer, band Wooden veneer, directional structure board, rift grain Wooden veneer, rift grain Wooden veneer.

9. composite board for bottom board of container according to claim 8 is characterized in that: with described panel layer, two-layer rift grain Wooden veneer and the equal double-sided cloth glue of described band Wooden veneer that backplane level is adjacent, cloth glue amount is 330～380g/cm2; And the equal cloth glue not of the rift grain Wooden veneer that is positioned at described panel layer, backplane level and the rift grain Wooden veneer that is positioned at intermediate core layer and described directional structure board.

10. composite board for bottom board of container according to claim 5, it is characterized in that: described Wooden veneer and described directional structure board assemble pattern are: rift grain Wooden veneer, rift grain Wooden veneer, directional structure board, band Wooden veneer, directional structure board, band Wooden veneer, directional structure board, rift grain Wooden veneer, rift grain Wooden veneer.

11. composite board for bottom board of container according to claim 10 is characterized in that: with described panel layer, two-layer rift grain Wooden veneer and the equal double-sided cloth glue of described band Wooden veneer that backplane level is adjacent, cloth glue amount is 330～380g/cm2; And be positioned at all cloth glue not of the rift grain Wooden veneer of described panel layer, backplane level and described directional structure board.

12. the production method of a composite board for bottom board of container comprises that Wooden veneer making, directional structure board polishing, cloth glue, assembly, hot pressing, cutting edge, sanding, mortise, facing are processed, check warehouse-in step, it is characterized in that:

A. described directional structure board polishing step is: the surperficial pre-hardening thickness sanding that affects bonding quality of described directional structure board is disposed, and according to the assembly requirement, be polished to appointed thickness 8～18mm;

B. described cloth glue step is: coating meets the glue of container bottom board instructions for use on the described Wooden veneer of part, facecloth glue amount is that 160～190g/cm2, double-sided cloth glue amount are 330～380g/cm2, described glue is phenolic resins or other weatherabilities environmental protection glue preferably, and described directional structure board is cloth glue not all;

C. described assembly step is: from the bottom be backplane level begin by assemble pattern successively in layer upwards the stack of cloth glue until top layer namely panel layer get blank flat;

D. described heat-press step is: described blank flat under the condition of 120 ℃～155 ℃ of temperature, pressure 1.6～3.5MPa, that assembly is good carries out hot pressing, keeps 15～30min, then pressure drop stage, steam discharge, release;

E. described facing treatment step is: will be through aqueous environment protection paint spraying or glass-fibre reinforced resin polymer composite or phenolic impregnated nonwoven or the phenolic impregnated non-woven paper facing of described mortise step gained face veneer layer, edges of boards and the wooden color of tenon mouth position employing clone.

13. the production method of composite board for bottom board of container according to claim 12 is characterized in that: described Wooden veneer and described directional structure board assemble pattern are: rift grain Wooden veneer, rift grain Wooden veneer, band Wooden veneer, directional structure board, band Wooden veneer, directional structure board, band Wooden veneer, rift grain Wooden veneer, rift grain Wooden veneer.

14. the production method of composite board for bottom board of container according to claim 13, it is characterized in that: the described Wooden veneer facecloth glue that is positioned at panel layer and backplane level, glue used is the phenolic resins of 40～52% solids contents or other weatherabilities environmental protection glue preferably, and cloth glue amount is 160～190g/cm2; Described band Wooden veneer all carries out double-sided cloth glue, and glue used is the phenolic resins of 40～52% solids contents or other weatherabilities environmental protection glue preferably, and cloth glue amount is 330～380g/cm2; The two-layer rift grain Wooden veneer adjacent with described panel layer, backplane level and described directional structure board be cloth glue not all.

15. the production method of composite board for bottom board of container according to claim 12 is characterized in that: described Wooden veneer and described directional structure board assemble pattern are: rift grain Wooden veneer, rift grain Wooden veneer, directional structure board, band Wooden veneer, rift grain Wooden veneer, band Wooden veneer, directional structure board, rift grain Wooden veneer, rift grain Wooden veneer.

16. the production method of composite board for bottom board of container according to claim 15 is characterized in that: with described panel layer, two-layer rift grain Wooden veneer and the equal double-sided cloth glue of described band Wooden veneer that backplane level is adjacent, cloth glue amount is 330～380g/cm2; And the equal cloth glue not of the rift grain Wooden veneer that is positioned at described panel layer, backplane level and the rift grain Wooden veneer that is positioned at intermediate core layer and described directional structure board.

17. the production method of composite board for bottom board of container according to claim 12 is characterized in that: described Wooden veneer and described directional structure board assemble pattern are: rift grain Wooden veneer, rift grain Wooden veneer, directional structure board, band Wooden veneer, directional structure board, band Wooden veneer, directional structure board, rift grain Wooden veneer, rift grain Wooden veneer.

18. the production method of composite board for bottom board of container according to claim 17 is characterized in that: with described panel layer, two-layer rift grain Wooden veneer and the equal double-sided cloth glue of described band Wooden veneer that backplane level is adjacent, cloth glue amount is 330～380g/cm2; And be positioned at all cloth glue not of the rift grain Wooden veneer of described panel layer, backplane level and described directional structure board.

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