JPH02150303A - Wood-plastic composite decorative wood-based board and manufacture thereof - Google Patents

Abstract

PURPOSE:To realize the title board which is excellent in wear resistance, weatherability, water resistance and the like and has long term usability and shows beautiful decorativeness by a structure wherein a plurality of wood-plastic composite (WPC) decorative veneers having specified thickness are pasted onto the surface of wood-based board in pattern and grooves and having specified width are made along the joined edge faces of WPC decorative veneers from their surfaces. CONSTITUTION:The board concerned is produced by integrally bonding a plurality of rectangular WPC decorative veneers 2 and square WPC decorative veneers 3 1mm or more thickness in proper pattern such that the rectangular WPC decorative veneers 2 are assembled around the square WPC decorative veneer 3 having their opposed edge faces 7 joined to one another onto the surface of a large-sized rectangular wood-based board having proper thickness. At the joined edge faces of the WPC decorative veneers 2 and 3, grooves 4, each of which a V- or U-shape in section, are machined from the surface so as to arrive in the neighborhood of the rear of the veneer. The width of the groove 4 is machined so as to be 1.5 times or more as thick as the thickness of the WPC decorative veneer 2 or 3 in order to make the shape of the joint, which is made by the groove 4, large for improving the solid feeling effect of the board.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a parquet-like WPC decorative wood board with joint processing used for flooring of buildings, etc., and a method for manufacturing the same.

[Conventional technology]

Traditionally, in order to obtain decorative wood boards with decorative joints on the surface, multiple rectangular or square wood boards are arranged in an appropriate pattern on the surface of the base material and then adhered to each other. Either cut a groove of an appropriate depth on the surface along the edge of the board, or chamfer the four edges of the plurality of wood boards in advance, and attach a plurality of these wood boards to the surface of the base material. A method is to form joints by chamfering the end faces of the wood boards that are joined together by arranging and pasting them in an appropriate pattern, and then finishing by applying an appropriate colored paint to the back side of the wood boards. There is a known "C".

[Problems to be Solved by the Invention] However, when a wooden board is chamfered or grooved, especially when the core or groove is cut in a direction perpendicular to the fiber direction of the wood board, If the processed surface becomes fluffy, there is a risk of partial chipping, resulting in a defective product.
Furthermore, when colored paint is applied to the surface of a wooden board, the paint adheres to the fluffy surface more often, resulting in a darker color than the treated surface provided in the direction of the fibers, reducing cosmetic properties. There was a problem with doing this.

Furthermore, paint easily penetrates into the ends of the wood boards that appear on the cut chamfers and grooves, resulting in a color difference from the flat parts, reducing the product value.

The present invention is a WPC that can completely solve these problems.
The purpose of this paper is to provide information on decorative wood boards and their manufacturing methods.

[Means to try to solve the problem]

In order to achieve the above object, the WPC decorative wood board of the present invention has a plurality of WPC decorative boards with a thickness of 1 mm or more on the surface of a wooden base material, and their opposing end surfaces are joined to each other in a patterned manner. Furthermore, along the joint end surfaces of these WPC decorative veneers, a thickness of 1.
A concave groove having a width of five times or more is formed, and the four end faces are chamfered.

Further, the method for manufacturing a WPC decorative wood board according to the present invention includes a step of adjusting a plurality of wood veneers into a predetermined shape, and a step of injecting and curing a synthetic resin liquid into these wood veneers to form a WPC decorative veneer. , a step of adhering the WPC decorative veneer in a patterned manner on the surface of the base material, and a step of applying groove processing or chamfering to the WPC decorative veneer. The first step is to adjust the wood veneer to a predetermined shape, and the step of grooving or chamfering the WPC decorative veneer is performed at least after the step of injecting and curing the synthetic resin liquid into the wood veneer to form the base material. The present invention is characterized in that a WPC decorative wood board is obtained in which a concave groove formed by the above-mentioned groove processing or chamfering is provided on the joint end surface of the WPC decorative veneer adhered thereon.

[For production]

Decorative wood boards are made by pasting multiple WPC decorative veneers in a pattern onto a wood base to form a predetermined pattern, so they have excellent abrasion resistance, weather resistance, water resistance, etc. 2) It can be used for a long time and exhibits the beautiful cosmetic properties unique to WPC. 2) It does not stain easily and can be easily removed by wiping. Furthermore, since wide and deep grooves are provided at the joining end surfaces of the plurality of Wl)C decorative hanging boards to form joints, it presents a parquet-like appearance with a three-dimensional effect.

Furthermore, according to the method of the present invention, a synthetic resin liquid is injected and cured into a plurality of wooden veneers adjusted to a predetermined shape to form WPC, and then chamfers and grooves are cut into the WPC decorative veneers. Therefore, even if the chamfer width or groove depth is large, there is almost no fuzz on the cut surface, and in addition, a smooth cut surface is obtained without chipping, and furthermore, this WPC decorative wood board When painting and finishing °ζ, the penetration of the paint from the cut surface into the interior is reduced, and the grooves and chamfered parts provided in the direction of the temporary fibers of the wood Fn and in the direction orthogonal to that direction have dark and light colors. Almost no coloring occurs, resulting in a uniformly colored decorative surface, and durability such as weather resistance and water resistance is improved.

In addition, since the plurality of WPC decorative veneers arranged in a pattern on the surface of a wooden base material have the chamfers and grooves applied to the surfaces of the end surfaces that are joined to each other, as mentioned above, the chamfers and grooves are For groove machining. As a result, the joined end surfaces are substantially erased, and a WPC decorative wood board with a parquet-like appearance rich in three-dimensional effect is obtained.

〔Example〕

Embodiments of the present invention will be explained with reference to the drawings. In FIGS. 1 and 2, (1) is a large rectangular wooden base material having an appropriate thickness, and on its surface are a plurality of sheets with a thickness of 1 mm or more. For example, a rectangular WPC decorative veneer (2) and a square WPC decorative veneer (3) are placed around the square WPC decorative veneer (3). ) are arranged so that a suitable pattern is formed when their opposing end surfaces (7) are joined to each other, and are integrally bonded.

In this case, the veneer thickness is 1 mm or more because
This is because if the groove is formed below this level, the presence of the groove will not be noticed and the design will be poor.

A concave groove (4) with a V-shaped or U-shaped cross section reaching from the front surface to the vicinity of the back surface is cut into the joint end surface of these WPC decorative veneers (2) and (3), and furthermore, a groove (4) with a V-shaped or U-shaped cross section is cut out from the front surface to the vicinity of the back surface. Material (1
) surrounding WPC decorative veneer (2) arranged on the four periphery of the wood base material (1) and continuous on the same vertical plane as the end face of the wood base material (1).
A chamfer (5) having the same shape as the opposing surface of the groove (4) is formed on the end face of the groove (4). Furthermore, the width of the groove (4) is cut to be at least 1.5 times the thickness of the WPC decorative veneer (2) and (3), and the shape of the joint formed by the groove (4) is A parquet-like WP with a larger size and improved three-dimensional effect.
This is what constitutes the decorative wood board C.

(6) is a colored paint layer applied to the entire surface of this WPC decorative wood board.

Next, to describe the method for manufacturing such a WPC decorative wood board, first, a suitable piece of wood is cut, and as shown in Figure 3, a rectangular wood veneer (
2a) and - a square wood veneer (2a) whose side length is equal to the long side minus the short side of the wood veneer (2a);
3a) Adjust for multiple sheets.

In addition, in this case, the woody single 'fFi, (2a) (3a)
These wood veneers (2a) (3a) are cut and adjusted so that the fiber direction is in the length direction.

Next, as shown in Figure 4, a square wooden veneer (3
The long side end faces of the rectangular wooden veneer (3a) are brought into contact with the four end faces of a), and this combination shape is successively formed to form a large rectangular wooden base material (the planar shape of which will be described later). Arrange it so that it is the same size as 1).

At this time, the front or back surfaces of adjacent wooden veneers are bonded and connected using string-like material or tape (8).

In this way, multiple wood veneers (2
a) Put (3a) into a vacuum pot and apply the synthetic resin liquid to these wood veneers (
2a) Inject to the inside of (3a).

At this time, the synthetic resin liquid to be injected is a thermosetting addition polymerization type synthetic resin liquid such as unsaturated polyester, epoxy, urethane, or acrylic, but other synthetic resin liquids may be used.

The wood decorative veneers (2) and (3), which have been injected with the prescribed resin and have been treated with WPC, are then placed on the wood base material (1) by S! The substrate is placed on the substrate and is bonded and integrated with the wooden base material (1) (see FIG. 5).

At this time, after the injected resin liquid of the WPC decorative veneers (2) and (3) has hardened, an appropriate adhesive is applied to the back side or the surface of the base material of these WPC decorative veneers (2) and (3), and the adhesive is Alternatively, the decorative veneers (2) and (3) may be placed on the surface of the base material (1) and heated and pressurized before the injected resin liquid hardens. Even if a part of the injected resin liquid on the back side of the WPC decorative veneer (2) (3) is leached onto the surface of the base material (1) and the resin liquid is cured, the two are integrated with the resin. good.

Next, use an appropriate cutting tool such as an NC router or electric saw to cut all the joint end faces (7) of the adjacent WPC decorative veneers.
A concave groove (4) having a V-shaped or U-shaped cross section is cut in the section, and grooves (4) are formed on the four sides of the wooden base material (1) so as to be perpendicular to the end surface of the wooden base material (1). Surrounding W connected on the surface
On the end face of the PC decorative veneer (2), a chamfer (5) having the same shape as the face facing the groove (4) is cut with a cutting tool.

This groove cutting work is performed over the entire length of the joint surface so that the center of the groove (4) becomes the joint surface between the WPC decorative veneers, and the depth is from the surface of the WPC decorative veneer. It is cut to a depth that reaches the vicinity of the back surface and a width that is 1.5 times the thickness of the WPC decorative veneer.

Afterwards, perform a sanding process to remove the excess synthetic resin that has adhered to and hardened on the surface of the WPC decorative veneer (2) and (3), as well as any tape, etc. affixed to the surface. and finish the surface to a smooth surface.

Note that this sanding process may be performed before the groove cutting process.

Next, a colored paint made by mixing an appropriate coloring agent into an appropriate paint such as urethane, aluminum alkyd, or photo-curable paint is applied to the surface of the WPC decorative veneer (2) (3), and the surface is dried. Finishing is performed to obtain a WPC decorative wood board as shown in FIG.

This surface painting treatment is applied to WPC decorative veneer (2) (3).
) This may be done by applying a coloring agent to the surface and then applying a clear coat.

To summarize the manufacturing method of the above-mentioned WPC decorative wood board in the order of steps, it is as follows: Wood veneer adjustment process → Pattern creation process using multiple wood veneers → Resin injection process → Adhesion process with the base material → Grooving process
→Although this process consists of a surface painting process, the pattern making process and the resin injection process may be performed in the reverse order without relying on this process order.

That is, a plurality of wooden veneers (2a) adjusted to a predetermined shape
After performing resin injection treatment on (3a), these W
The PC decorative veneers (2) and (3) may be arranged in a parquet style on the wood base material (1) to be adhered and integrated with the base material (1).

In this case, the process order is: wood veneer adjustment process -> resin injection process - pattern creation process using a plurality of WPC decorative veneers -> adhesion process with the base material -> groove processing process - surface painting process.

Furthermore, as another process order, the wood veneer adjustment process → the resin injection process → the four-side chamfering process of each WPC decorative veneer → the pattern creation process using these WPC decorative veneers → the adhesion process with the base material - the surface painting process A desired WPC decorative wood board can be obtained even if

At this time, each WPC decorative veneer has been chamfered on its four side edges in advance, so when multiple WPC decorative veneers are arranged in a pattern on the base material, the adjacent WPC decorative veneers can be A groove is formed by chamfering.

In addition, in the above embodiment, a rectangular wooden veneer (
2a) and a square wooden veneer (3a), the present invention is not limited to such a combination of shapes, and a plurality of rectangular wooden veneers (3a) are combined to form a pattern. A desired marquetry pattern can be created on the surface of the base material using only chisel or square wood veneers, or even triangular or other polygonal wood veneers can be appropriately combined to create any pattern. It may be a scheme.

〔Effect of the invention〕

As described above, according to the decorative wood board of the present invention, since a plurality of WPC decorative veneers are pasted in a pattern on the wooden base material, the WPC decorative veneer increases the strength and has excellent properties. It exhibits abrasion resistance, weather resistance, and water resistance, and can be used for a long time.Moreover, it exhibits the beautiful cosmetic properties unique to WPC, and is resistant to staining, and even if it gets dirty, it can be easily wiped off. Since it can be removed, it can be effectively used as flooring materials, other interior materials, and furniture materials.

Furthermore, a deep groove having a width of 1.5 times or more than the thickness of the veneer is provided at the joint end surface of the plurality of WPC decorative veneers, and this groove forms a joint. , A beautiful parquet-style WP with a rich three-dimensional feel, with the joints being largely exposed to the outside and giving the appearance of an extremely thick veneer.
A C decorative wood machine can be provided, and in addition, even though a plurality of WPC decorative veneers are combined, each joint end face is erased by cutting the groove, so the product value is improved.

Furthermore, according to the method of the present invention, WPC decorative veneers arranged in a pattern on a wooden base material are made into W2C by injecting and curing a synthetic resin liquid into a plurality of wooden veneers adjusted to a predetermined shape. Since chamfers and grooves are later cut into the WPC decorative veneer, even if the width of the chamfer and the depth of the grooves are large, cutting can be carried out without causing fuzz or chips on the cut surface. Furthermore, when painting and finishing the WPC decorative wood board integrated on the wood base material, there is less chance of paint seeping into the interior from the chamfer or full surface. Therefore, there is almost no shading in the grooves or chamfered portions provided in the fiber direction of the wood board and in the direction perpendicular to the fiber direction, so that the entire surface including the flat portions and groove portions becomes a uniformly colored decorative surface. In addition to improving durability such as weather resistance and water resistance.

In addition, since the plurality of WPC decorative veneers arranged in a pattern on the surface of a wooden base material have the chamfers and grooves applied to the surfaces of the end surfaces that are joined to each other, as mentioned above, the chamfers and grooves are In some cases, the joint end surfaces are substantially erased by groove processing, and it is possible to obtain a parquet-like WPC decorative wood board with a rich three-dimensional effect and excellent product value.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and Fig. 1 shows its WP.
C A plan view of decorative wood board, Figure 2 is an enlarged vertical cross-sectional view of the main part,
3 to 5 are schematic diagrams for explaining the manufacturing process. (1)...Wood base material, (2)(3)...WPC decorative veneer, (2a) (3a)...Wood veneer, (4)...
・Concave groove, (5)...Chamfer, (6)...Colored coating layer, (Force...Joining end surface. 5 colors, 7N, hashibe included ≧be)

Claims (2)

[Claims] (1) A plurality of WPC decorative veneers with a thickness of 1 mm or more are adhered to the surface of a wooden base material in a pattern with their opposing end surfaces joined to each other, and these WPC decorative veneers are 1 of the thickness of the veneer from the surface along the joint end surface.
A WPC decorative wood board characterized by having a concave groove having a width of 5 times or more and having chamfered edges on all four sides. (2) The process of adjusting multiple wood veneers into a predetermined shape, and injecting and hardening synthetic resin liquid into these wood veneers to form WPC.
It consists of a combination of the process of making a decorative veneer, the process of bonding the WPC decorative veneer to the surface of the base material in a patterned state, and the process of applying groove processing or chamfering to the WPC decorative veneer, The step of adjusting the plurality of wood veneers into a predetermined shape is the first step, and the step of grooving or chamfering the WPC decorative veneer is performed at least after the step of injecting and curing the synthetic resin liquid into the wood veneer. W attached to the base material
A method for producing a WPC decorative wood board, which comprises obtaining a WPC decorative wood board in which a concave groove formed by the above-mentioned groove processing or chamfering is provided on the joint end surface of the PC decorative veneer.