JPS6147249A - Decorative board and manufacture thereof - 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 [Technical Field] The present invention relates to a veneer decorative board used as a ceiling material, etc., and a method for manufacturing the same.

[Background Art] The decorative wood veneer 3 is manufactured, for example, as shown in FIG. Material veneers 5 made by rotary or slicing logs are colored with spring wood color or summer wood color by dyeing, etc., and a large number of material veneers 5 of this spring wood color or summer wood color are combined and adhesive is applied. This is loaded between a mold 7 having a concave surface 6 and a mold 9 having a convex surface 8 and pressed together to create a deformed 7-rich 10. By slicing on a plane that intersects with the loading surface, a decorative wooden veneer 3 with a wood grain i pattern is obtained, with the spring wood color material veneer 5 and the summer wood color material veneer 5 appearing on the sliced surface. It is. A decorative board can be manufactured by attaching this wooden decorative veneer 3 as a veneer to a base plate 1 such as plywood. The problem here is that the spring wood portion 12 of the wood decorative veneer 3, which is formed of the spring wood colored material veneer 5, is not the same as the wood decorative veneer 3, as shown in FIG. 3(a). The color is the same in all parts of the throat, but in natural wood, the same spring wood part 12 has different colors depending on the location, as shown in FIG. 3(b). When used, it gives a smooth and natural feel. In addition, the base plate 1 is often formed by joining plywood 13 to the scarf joint 14 as shown in Fig. fjS4. The color of plate 1 may be different, base plate 1
If the thickness of the decorative wooden veneer 3 to be attached to the surface of the decorative veneer 3 is thin, this difference in color will be visible through the decorative wood veneer 3, and this difference in color will impair the appearance of the decorative veneer.
In addition, the wood decorative veneer 3 is scratched at the scar 7 and S India 14 portions, and the scratches also impair the appearance of the decorative veneer.

[Object of the Invention] The present invention has been made in view of the above points, and it is possible to make the spring wood part of a decorative wood veneer different in color, thereby expressing a natural look, and also to provide a tabletop. To provide a decorative board capable of preventing color differences from appearing on the surface of a decorative wood veneer or scratches on the decorative wood veneer when the board has a scarf joint, and a method for manufacturing the same. The purpose is to

[Disclosure of the Invention] The decorative board according to the present invention is composed of a backing sheet 2 attached to the surface of the base plate 1, and a wooden decorative veneer 3 stuck to the surface of the backing sheet 2, The backing sheet 2 is characterized in that the color tone is different between one part and the other part, and the method for manufacturing the decorative board is such that the backing sheet 2 has a different color tone between one part and the other part on the surface of the base plate 1. 2, and then a wooden decorative veneer 3 on the surface of the backing sheet 2.
The above object is achieved by using such a backing sheet 2.The present invention will be described in detail below with reference to Examples.

The backing sheet 2 is formed of paper, nonwoven fabric, etc., and is shown in Fig. 1 (
, ), the color tones are different between a portion, for example, both end portions 2a, and another portion, for example, the center portion 2b, and the both end portions 2a are formed to have a darker color than the center portion 2b. Then, this backing sheet 2 is pasted on the surface of the base plate 1 with an adhesive as shown in Fig. VI1(b).Next, the backing sheet 2 is attached to the base plate 1 from above the backing sheet 2 as shown in Fig. 2 above. 3. The wooden decorative veneer 3 as shown in Fig. 3 (a) is first
The decorative board is manufactured by pasting with adhesive as shown in Figure (c). When the backing sheet 2 is pasted in this way, the color of the backing sheet 2 will appear as a watermark on the decorative wood veneer 3, and the color tone of the backing sheet 2 will appear at the spring wood portion 12 of the decorative wood veneer 3, then at both ends and in the center. A difference in color occurs due to the difference in , and it is possible to give the decorative wood veneer 3 an appearance similar to that of natural wood as shown in FIG. fl&3 (b). Also, the base plate 1 is made of plywood 13 as shown in FIG.
13 are joined by a scarf joint 14, and even if there is a difference in color at the scarf joint 14, this difference in color is hidden by the backing sheet 2, and it can be used as a decorative wood veneer 3. Even if a thin material is used, it will not appear on the surface of the decorative wood veneer 3, and the decorative wood veneer 3 will be reinforced by the backing sheet 2. This prevents the decorative veneer 3 from becoming scratchy.

By the way, we used a backing sheet 2 that was colored red at both ends and wind-colored at the center, and used it as a base plate 1 with a color difference of ΔE=6.0 at the scarf joint 14.
, and then a cedar patterned decorative wood veneer 3 with a slice thickness of 0.20 mm was pasted on top of this to produce a decorative board.A decorative board with a natural-looking cedar wood grain pattern could be obtained. Moreover, the difference in color of the base plate 1 did not appear on the surface of the decorative wood veneer 3.

In addition, in order to prevent the color difference bordering on the scarf joint 14 of the base plate 1 from appearing on the surface of the decorative wood veneer 3,
Conventionally, a masking agent has been applied to the surface of the decorative wood veneer 3, but since the masking agent is applied using a roll coater, it is applied to the entire surface of the baseboard 1. . However, if you only want to hide the difference in color bordering on the 6th car 7th no 1 ind 14, apply the concealing agent to only a part of the baseboard 1, sandwiching the scar 7 no a in 14 part. However, applying the concealing agent to the entire base plate 1 in this way is wasteful and causes an increase in cost. Therefore, in order to apply the masking agent only to the scarf joint 14 portion of the base plate 1 using the σ-lecocou, it is sufficient to use the I& position as shown in FIG.

That is, the roll coater 15 is composed of an application roll 17 that is supplied with the hiding agent 16 and applies the hiding agent 16 to the base plate 1, and a feed roll 18 that supports the lower surface of the base plate 1 while feeding the base plate 1. The feed roll 18 is movable and driven so as to move toward and away from the application roll 17. A pair of upper and lower rolls 1 are provided before and after this roll coater 15, respectively.
An idle roll 21 consisting of 9.20 is provided. The position of the lower edge of the upper roll 19 in each idle roll 21 is the position of the lower edge of the coating roll 17 in the a-ru coater 15.
It should be positioned below the lower edge of the . In this device, the feed roll 18 is in the lower position before the base plate 1 is fed as shown in FIG. Ga idroll 21,
21 and the front end of the base plate 1 is in front of the idle roll 2.
1, the feed roll 18 moves upward and the bottom surface of the base plate 1 is pressed down by the feed roll 18, and the fifth
As shown in Figure (c), the base plate 1 is bent toward the coating roll 17 side. With the base plate 1 bent in this manner, the coating roll 17 applies the masking agent 16 to the surface of the plywood 10.

The feed roll 18 returns to the lower position before the rear end of the base plate 1 passes the rear idle roll 21.

Therefore, the masking agent 16 is applied to the surface of the base plate 1 only before and after the scarf joint 14. *
At this time, the vertical movement of the feed roll 18 is adjusted w4 by the detection by the sensor 22, and the base plate 1 is adjusted by the feed roll 18.
The amount of the concealing agent 16 applied may be adjusted by adjusting the pressing force applied to the cover.

In this way, as shown in FIG. 6, the coating distribution of the concealing agent 16 is adjusted so that the coating amount is the largest at the scarf joint 14 and decreases as it moves away from the scarf joint 14. In this state, the masking agent 16 can be applied only to the scarf joint 14, and the amount of coating is reduced to about 1/3 compared to the case where the masking agent 16 is applied to the entire surface of the base plate 1. That's a big deal.

By the way, when VX-07 manufactured by Ohshika Shinko Co., Ltd. was applied to plywood as a concealing agent using the above device, the concealing agent was 55 ± 587 m at the scar 7 point part of the plywood.
The masking agent is applied in the distribution shown in Figure 6 to achieve the maximum coating amount of 1/3 compared to the case where the masking agent is applied to the entire surface of the plywood.
We were able to reduce the amount of coating applied. Furthermore, when a regulated wood decorative veneer with a thickness of 0.20 tm was attached to the plywood coated with the concealing agent in this manner, the difference in color of the base plate did not appear on the surface of the wood decorative veneer.

[Effect of the invention 1 As described above, in the present invention, a backing sheet with different color tones is pasted on one part and another part of the surface of the base plate, and a decorative wood veneer is further pasted on the surface of the backing sheet. Since the color of the backing sheet will show through the wood decorative veneer, there will be a difference in color due to the difference in the color tone of the backing sheet on the wood decorative veneer. It is possible to give a similar appearance to the wood decorative veneer, and the base plate is formed with a scarf) 1 India, and there is a difference in color at the scarf 7 joint. However, this difference in color is hidden by the backing sheet, and even if a thin decorative veneer is used as a decorative wood veneer, there will be no difference in color on the surface of the decorative veneer. is reinforced by a backing sheet, which prevents cracks from occurring in the decorative wood veneer at the scar 7 ditint portion.

[Brief explanation of drawings]

FIGS. 1(a), (b), and (c) are perspective views of each process in an embodiment of the present invention, and FIGS. 2(a) and (b) are perspective views of each process showing the production of decorative wood veneer, Figures 3 (a) and (b) are front views of the decorative wood veneer and natural veneer, Figure 4 is a perspective view of the base plate, and Figures 5 (a) and (bOc) show the presence of the masking agent on the base plate. FIG. 6 is a schematic block diagram showing the application, and FIG. 6 is a diagram showing the application distribution of the concealing agent. 1 is a base plate, 2 is a backing sheet, and 3 is a decorative wood veneer.

Claims (2)

[Claims] (1) It is composed of a backing sheet pasted on the surface of the base plate and a decorative wood veneer pasted on the surface of the backing sheet, and the backing sheet has a different color tone between one part and the other part. A decorative board that is characterized by (2) A method for manufacturing a decorative board, which is characterized by pasting a backing sheet with different color tones in one part and another part on the surface of the baseboard, and then pasting a decorative wooden veneer on the surface of the backing sheet.