JPS62292403A - Manufacture of decorative veneer - 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] 3. Detailed Description of the Invention [Technical Field] This invention relates to a method of manufacturing a decorative veneer that artificially creates a wood grain pattern.

[Background technology]

The conventional method for manufacturing decorative veneers is to alternately laminate multiple sheets of bleached flower veneer or light-colored dyed veneer with sheets of four-colored nonwoven fabrics using adhesives, and then press and bond them to form a composite flitch. ,
This assembled flitch was then sliced in a predetermined direction to obtain a sliced veneer with a grain pattern or straight grain pattern expressed on the board surface.

In this case, the spring wood of the natural tree species is expressed by bleached ii'-temporary or dyed veneer, and the summer wood is expressed by dark color sorting.

However, the obtained sliced veneer lacks the luster (gloss) of the summerwood parts that is found in natural cedar, and has the disadvantage that it has a poor natural look and feel.

[Object of the Invention] The object of the invention is to provide a method for producing kagari, which has a natural feel similar to that of natural cedar, by imparting stiffness only to the summer wood part. It is.

[Disclosure of the invention]

The method for manufacturing a decorative veneer of the present invention includes the steps of laminating a light-colored material for expressing spring wood portions and a material for expressing dark-colored summer wood portions via an adhesive and bonding them by pressure to create a composite flitch. , slicing the laminated flitch to obtain a sliced veneer in which spring wood portions and summer wood portions are alternately arranged on the board surface, and applying 7.6 to 12 g/n of paint to the surface of the sliced veneer. (0,7～
1.1 g/scale2).

As described above, the method of the present invention involves assembling a material for expressing spring wood and a material for expressing summer wood, and applying a predetermined amount of paint to the surface of the sliced veneer obtained by slicing. Therefore, only the summer wood part of the resulting decorative veneer was used (
It can give a natural look and feel.

As the material for expressing the spring wood portion, for example, in addition to bleached veneer, veneer that has been bleached and dyed in a light color can be used. When dyeing the veneer a light color, the surface of the sliced veneer becomes a wet color by applying paint to the sliced veneer, so
It is preferable to dye to a lighter tone than the target value.

Examples of the material for expressing summer material include sheet materials such as nonwoven fabrics and paper colored in dark summer material colors. Furthermore, the summer wood part can also be expressed with an adhesive layer colored in the summer wood part color.

Hereinafter, the method of the present invention will be explained in detail based on FIGS. 1 and 2. FIG. 1 is an explanatory diagram showing the manufacturing process of a sliced veneer according to the present invention.

As shown in the figure, the material 1 for expressing the spring material part and the material 2 for expressing the summer material part are alternately laminated in a concavo-convex mold 3 via an adhesive and bonded by pressure. The obtained assembled fritsch 4 is sliced in a direction intersecting the stacking direction to obtain a sliced veneer 7 having a grain pattern in which spring wood portions 5 and summer wood portions 6 are alternately arranged on the board surface.

The sliced veneer 7 is adhered to the surface of a base material (not shown) such as plywood, and a predetermined amount of paint is applied to the surface.

As the paint, a photocurable paint that is easy to add gloss, that is, has good elasticity, is preferably used. FIG. 2 is a graph showing the relationship between the amount of photo-curing paint applied and the edge of the summerwood part. As is clear from this graph, when the amount of paint applied is in the range of 7.6 to 12 g/M, it is possible to apply gloss only to the summerwood part, and when the amount applied is less than this, it is possible to apply shine. If the amount of application is larger than this, sluggishness will appear not only in the summer wood but also in the spring wood, both of which are unfavorable.

Next, the present invention will be described in detail with reference to Examples.

Example: Thickness of agathis material 1. The Q am veneer was bleached and used as a material to express the spring material, and the colored non-woven fabric was used as the material to express the summer material.These materials were laminated alternately with adhesive, and pressed with a predetermined uneven shape. I glued them together to create an assembled flitch. This assembled flitch was sliced to obtain a sliced veneer 8 as shown in FIG. A spring material portion 9 corresponding to a bleached veneer and a summer material portion 10 corresponding to a colored nonwoven fabric were formed on the plate surface of this sliced veneer 8.

This sliced veneer 8 was glued onto the plywood, and then a masking agent (UX-07 manufactured by Oshika Shinko ■) was applied to the surface of the plywood for 40 minutes.
~50 g/rd, and on top of that, uncolored adhesive was applied at 70~90 g/n? I applied it and glued the sliced veneer together.

Next, after the surface of the sliced veneer was raised, a light curing paint (UV paint, Aurex 6 manufactured by China Paint Co., Ltd.) was applied.
65-clear with colorant added) to 7.6 to 1
It was applied at 2 g/rrl. As a result, we were able to obtain a decorative veneer with a rich natural feel in which only the summer wood part was given stiffness.

〔Effect of the invention〕

According to this invention, since the paint is applied to the surface of the sliced veneer in a predetermined amount, it is possible to impart shine (gloss) only to the summer wood part of the resulting decorative veneer, and it is natural. A decorative veneer with a rich and natural feel can be obtained.

Next, Figure 4 shows how to artificially create decorative veneer with a straight grain pattern.
This will be explained based on FIG.

Due to restrictions such as the size of the raw wood, natural straight-grained decorative veneers are rarely available in a wide size as a single piece.
As shown in the figure, a wide straight-grain pattern decorative veneer 21 is made by pasting together a plurality of narrow-sized decorative veneers 20.

For this reason, gaps and overlaps tend to occur between the decorative veneers 20 during bonding, and the bonding work requires considerable skill.

On the other hand, with the method of laminating and gluing material veneers and slicing them to create an artificial straight grain pattern, it is possible to easily create a wide size by increasing the number of laminated material veneers and selecting the slicing angle of the flitch. However, it is immediately obvious that it is a synthetic material because there are almost no wide-sized straight-grain patterned decorative veneers in nature, and there is no cut in the straight-grain pattern at the bonded edges unlike natural products. There was a problem with this.

In order to eliminate this problem, it is conceivable to vary the spacing of the summer wood portions forming the straight grain, but it is difficult to manufacture a mold. Additionally, it would be possible to create narrow-sized decorative veneers and bond them together in the same way as natural decorative veneers, but this was time-consuming and inefficient.

Therefore, in order to easily create a wide-sized decorative veneer by laminating multiple narrow-sized decorative veneers together, we decided to use the method shown in Figure 5 (
As shown in A), mold 2 with multiple rows of arbitrary curvature
2, a plurality of material veneers 23 are laminated with an adhesive and bonded by pressure to create an assembled flitch 24, which is shown in the same figure (B).
As shown in the figure (C), the sawing direction is indicated by an arrow for sawing at an arbitrary angle θ for each row A, B, C, D. Align the direction as shown and adhere with adhesive to make one wide flitch 30, which is then sliced (the slicing direction is indicated by the arrow).The obtained decorative veneer is as shown in FIG. In addition, small decorative veneers 26 corresponding to small flitches 25 are connected to form a wide-sized decorative veneer 27, and no gaps or overlaps occur between the small decorative veneers 26.

Creating multiple examples A-D with arbitrary curvatures in the mold 22 is as follows:
This is to create a plurality of small flitches 25 shown in No. 511 (B) and (C). The number of columns and the size of one column can be appropriately determined depending on the desired narrow width or wide width. Furthermore, the size of the mold 22 is determined in order to more efficiently take the size of the material veneer to be molded.

In addition, as shown in FIG. 7, the curvature θAI of the mold 22,
The spacing between the straight grains, that is, the spacing between the summer timber sections can be determined by θA2... and the sawn angle θ8.

FIG. 7 is an enlarged view of the M portion of the mold 22 shown in FIG. 5(A). The desired width S of the straight grain of the decorative veneer is expressed by the following formula.

S = t/5in (θ+θ8) Here, t is the thickness of the molded male plate.

In the above formula, θ8 and ~θA3 are 0° and 10, respectively.
', 20°, and t is 1. If Q i@, then the width S of the straight grain is 2.9B, 2.0■, and 1.6n, respectively, and as shown in Figure 1O, the width of the straight grain changes in this order,
This results in a structure in which multiple cases are joined.

Reference Example: A pair of molds (width 600+n) having the shape shown in FIG. 5(A) and the shape per row as shown in FIG. 7 were created. At this time, as shown in FIG. 8, the top of the convex portion 28 of the mold is made to have a gently curved surface, since there is a risk of poor adhesion. Then, composite veneer (width) obtained by adhering in advance a rotary veneer (Chinese wood) of O+N and a sheet of thickness Q, 2as dyed in the color of the spring wood. 600n) were laminated and bonded by pressure using the mold. The obtained flitches were sawn at a sawn angle of 20'' for each row, and by subtracting sawn loss, four small flitches 29 as shown in Fig. 9 were made.The height of these small flitches 29 was 400 mfi.
, the width is 140fi. Next, these small flitches 29 are glued together with adhesive, and this is sliced to form the first
A wide straight-grain decorative veneer as shown in Figure 0 was obtained.

This decorative veneer has a shape in which four small decorative veneers are joined together in units of 149 cranes.

As described above, according to this method, (1) the bonding process is simplified, eliminating the need for operator skill and improving productivity. (2) Multiple small flitches can be created with the size of a molded veneer, which is efficient. (3) There is an advantage that the width and size of the straight grain can be arbitrarily changed by changing the shape, curvature, and sawing angle of the mold.

[Brief explanation of the drawing]

Fig. 1 is a process explanatory diagram showing the method of the present invention, the second leap is a graph showing the relationship between the amount of paint applied and the edge of the summer wood part, and the third
The figure is a plan view of a decorative veneer obtained in an example of the present invention, and FIG. 4 is an explanatory diagram showing the lamination of ordinary natural decorative veneers.
Figure 5 is a process explanatory diagram showing another method of manufacturing decorative veneer, Figure 6 is a plan view of a wide-sized decorative veneer, and Figure 7 is an explanatory diagram showing the relationship between the curvature of the mold and the sawn angle. , Fig. 8 is an explanatory diagram showing the shape of the convex part of the mold in the reference example, Fig. 9 is an explanatory diagram showing the small flitch, and Fig. 10 is a plan view of the wide-sized decorative veneer obtained in the reference example. It is. ■...Material for expressing spring wood, 2...Material for expressing summer wood, 3...Concave and convex type, 4...Assembled flitch, 5.9...
・Spring wood section, 6.10... Summer wood section, 7.8... Decorative veneer - Yuishi t (g/mQ Figure 2 Figure 4

Claims (2)

[Claims] (1) A process of forming a composite flitch by laminating light-colored materials for expressing spring wood portions and dark-colored materials for expressing summer wood portions alternately via an adhesive and bonding them by pressure, and slicing the composite flitch. a step of obtaining a sliced veneer in which spring wood portions and summer wood portions are alternately arranged on the board surface; and a step of applying paint to the surface of the sliced veneer at a rate of 7.6 to 12 g/m^2. A method for manufacturing a decorative veneer including. (2) Claim No. 1 in which the paint is a photocurable paint
) The method for manufacturing the decorative veneer described in section 2.