JPS58155949A - Manufacture of decorative flitch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention relates to a method for manufacturing decorative plywood.

Decorative plywood is made of plywood (consisting of plywood, sawn boards, etc.) with a decorative material such as synthetic resin or decorative veneer on the sides, and is used as an interior and exterior material because of its great aesthetic value.

-House J4. Used as a component for wood products. Among such decorative plywood, decorative plywood in which a wood grain pattern similar to the natural wood grain W& is formed on the next surface has been manufactured in the following manner. In other words, it is manufactured by making grooves in the same pattern as the wood grain pattern on the plywood surface, filling the holes with resin colored in the wood grain color, and then forming a decorative wood layer over the entire plywood surface. was. As shown in Fig. 1, the thus obtained decorative plywood has a resin 1 colored in the wood grain color filled in the brim, and the wood grain expressed by the resin 1 is concave. Since the plywood did not have convex protrusions like natural products, it lacked a natural feel and wood texture, and the plywood surface was flat, so it lacked a three-dimensional effect, making it almost the same as a printed finish. . Also, with this manufacturing method, there were some noodles that required a lot of effort and effort to process.

This invention was made in view of the above circumstances, and is a method for manufacturing decorative plywood in which the surface [kltc] wood grain is formed three-dimensionally and a resin coating is applied thereon. This method involves attaching boards and applying a wood grain removal process to the surface of the veneer to make the wood grain stand out, and then forming a resin film on the surface of the veneer.

That is, in the present invention, a wood grain rate plate is attached to the surface of the plywood and the surface of the veneer is subjected to a process such as sanding to remove the wood grain, so that the wood grain becomes three-dimensional. Therefore, we made sure that the resulting decorative plywood had a wood feel, a three-dimensional feel, and a natural feel.
It will become. Furthermore, processing becomes easier.

Next, this invention will be explained in detail.

As the plywood used in this invention, a medium-sawn plywood board can be cited, but other than that, non-woody materials such as resin paper may also be used.

The grained veneer to be stacked on the base plate may be obtained by cutting natural wood, or it may be obtained by laminating and gluing material veneers and slicing the flitch. good.

The adhesion between the real basis weight veneer and the base plate is not limited to %, and an omniscient method can be used. For example, pressing with a flat press or the like is performed using adhesive, melamine, or epoxy adhesive.

To remove wood slag from the surface of a real veneer, for example, sanding or applying frictional force to the surface of the veneer.

One example is adding Kenba Power 11 Kuman Abrasive Power.

Sanding is performed by blowing fine sand onto the surface of the grained veneer using air, but it is also possible to use a liquid such as oil instead of air. This process causes the spring wood part (other than the wood grain) of the veneer, which has a small hardness in the wood grain area, to wear out, causing the wood grain to stand out.

The formation of the machine-side film on the surface of the veneer that has been subjected to the wood slag removal process is not limited in any way. For example, a vinyl chloride resin (PVC) sol is used as the resin, and this is applied to the surface of the veneer using a 70-coater, a cushioning material is placed on top of the sol, and hot pressure molding is performed using a hot platen. In this case, if it is necessary to further emphasize the prominence of the wood grain, a soft material is used as the cushioning material, and the hot plate is pressed with a large amount of pressure.

By doing this, buckling of the spring wood portion occurs, and the wood grain becomes more prominent. Note that, prior to applying the PVC sol, the surface of the veneer is usually subjected to a primer treatment. The primer may be of any type, such as urethane, vinyl chloride, or acrylic. However, it is necessary to process the veneer so that its surface is smooth and has a certain thickness (for example, if it is a urethane type, it has a thickness of 5 to 10 μm). Especially when the wood grain is not very noticeable even after the wood grain embossing treatment.

When applying colored pigment (opaque pigment) or printing ink to the surface of the veneer using a roll, the 2nd i
As shown in FIG. 11, a wood grain color I13 is formed on the top of the wood grain portion 2 so that the wood grain stands out. Primer treatment may be performed after 9 days in this manner. In FIG. 2, 4 is a base plate, and 5 is a single layer of primer.

This invention is a companion for manufacturing decorative plywood as described above, and the wood grain becomes three-dimensional and emphasized, giving it a woody feel and a natural feel. In addition, processing becomes easier. Moreover,
Since a resin film is formed on the surface of the i-board, its strength is increased. This m-oil film has an increased surface area (due to the unevenness) and is formed on the veneer surface with fine serrations, so it has a high adhesion to the veneer surface and is difficult to peel off.

That is, according to the present invention, strength can be imparted to wood while emphasizing the beauty of the wood grain.

Next, a detailed explanation will be given based on an example.

〔Example〕

As shown in FIG. 3, on a base plate 6 with a thickness of 2 to 20 mm,
Board thickness 0.2~ having summer wood part (grain part) 7 and spring wood part 8
Glue the 3mm veneer 9 together using a flat press. next,
As shown in FIG. 4, the surface of this veneer 9 was sanded. In FIG. 4, 10 is 9 sand grains that are sprayed in the direction of the arrow. As a result, as shown in FIG. 5, the spring material portion 8 having a lower hardness is worn more than the summer material portion 7 having a higher hardness, and the summer material portion 7 comes to stand out. A partially enlarged view of this is shown in FIG. In other words, the surface of the veneer after the sanding process is abraded by fine sand, resulting in roughness and fine irregularities throughout the surface.

Next, as shown in FIG. 7, urethane-based glitter is applied to the surface of the sanded veneer to form a single layer 11 (thickness: 5 to 10).

Next, apply the following composition o on top of the primer layer 11.
The pvc sol was applied using a 70-coater.

The sol viscosity is 500, considering the ease of penetration into the recesses.
It was set to N15QOcps.

PVC (T1 piece - made by Oy Co., Ltd., Zety121): 1
00 parts by weight DOP
:10-301 Reactive plasticizer :
30~501 Stabilizer and others = 2~l
O1 Next, hot pressure molding was performed using a hot press. At this time, hot-press molding is performed on the back side of a cushion sheet 12 made of foam or silicone rubber, as shown in No. 8 wAK, with a release paper 13 having a thickness of 50 to 100 μm (1000 μm may be used for those made of polytetrafluoroethylene). The cushion 14 made by pasting was placed on the surface of the veneer so as to follow the unevenness thereof, and a pressure of 5 to 15 kg/crn2 was applied. As a result, the PC sol gelatinized and a resin film (not shown) was formed. The thus obtained plywood (not shown) has a three-dimensional appearance of Zero I and has a wood-like texture.

It had a natural feel, was made of sand, and had a very stiff surface.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a conventional example, Fig. 2 is an explanatory diagram of the wood grain area in good condition after being processed to remove wood slag, and Figs. 3 and 4 are explanatory diagrams of an embodiment of the present invention. The figure is an explanatory diagram to explain the state of the veneer surface after sanding, Figure 6 is a partially enlarged view, Figure 7 is a diagram showing the state in which a single layer of primer is formed on the veneer surface, and Figure 8 is a diagram showing the condition of the veneer surface after hot press forming. It is a side view of the cushion used. 6... Base plate 7... Summer wood section 8... Spring wood section 9...
・Veneer io...Sand grains 11...Primer single layer patent author: Matsushita Electric Works Co., Ltd. agent, patent attorney Takehiko Matsumoto Figure 1
Figure 2 Figure 5 Figure 6 255-7 Figure 7 3 Figure 8

Claims (1)

[Claims] (1) A method for manufacturing decorative plywood in which wood grain is formed three-dimensionally on the surface and a resin coating is applied from above, in which a wood grained veneer is pasted on the surface of a base plate and the wood grain is formed on the surface of the veneer. A method of manufacturing decorative plywood characterized by making the wood grain stand out by applying a grain removal process, and then forming a resin film on the surface of the veneer.