JPS60145803A - Manufacture of flitch and 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] [Technical Field] This EJA relates to a method for manufacturing 7-rich and a method for manufacturing decorative veneer using the same.

[Background technology]

Conventionally, when creating a flitch using a so-called multi-row mold that has a plurality of uneven pressure contact surfaces, a metal lower 8! ! A veneer 3 was laminated between the wooden mold 1 and the upper mold 2, and the veneer 3 was bonded by pressure. At that time, as the veneer 3, type 1.
A wide veneer board large enough to cover the entire surface of 2 was used.

However, there is a problem in that the wider the veneers processed from logs using a rotary or a slicer, the smaller the proportion of veneers that can be used, resulting in a lower yield. Therefore, it has been proposed to use narrower veneers in order to increase the proportion of veneers that can be used. In FIG. 2, using the same multi-row mold as described above, narrow width veneers 4 are laminated in each row and bonded by pressure to obtain a plurality of 7-rich sheets.

Using the narrow veneer 4 in this manner has the advantage that the proportion of usable veneers increases. However, when the narrow-width veneer 4 was used, it was extremely difficult to create the wooden mold 2 to be used in the next molding. That is, as shown in FIG. 3, a white part 5a is cut from the obtained flitch 5 by sawing, this white part 5a is placed on the lower mold 1, and a thickness of 50 mm is formed on the upper surface in order to provide holding strength. Paste the plate 6 larger than the bait and make the wooden mold 2
I was getting .

[Purpose of the invention]

An object of the present invention is to provide a method for manufacturing a flitch and a method for manufacturing a decorative veneer, which can use a narrow-width veneer and also facilitate the creation of a wooden mold.

[Disclosure of the invention]

The manufacturing method for 7 linches of the present invention includes placing a wide veneer on a mold having a plurality of uneven pressure contact surfaces arranged in a row, a wide veneer that covers the entire surface of the mold, and a narrow veneer having a width that covers at least one of the uneven pressure contact surfaces. It is characterized in that the two are laminated together using an adhesive and bonded by pressure.

Further, in the method for manufacturing a decorative veneer of the present invention, the white part of the flitch is cut horizontally to form a wooden mold, and the other parts are sliced to obtain a decorative veneer.

An embodiment of the present invention will be described with reference to FIGS. That is, the flitch of this invention uses a wide veneer 7 and a narrow veneer 8 as shown in the figure (- and [F]), and combines them appropriately as shown in the figure (Q) to form a multi-row structure. They are laminated and pressure-bonded in a mold 9 (the Vi two-row mold is shown in the drawing) via an adhesive.

The obtained flitch 10 is cut at the position shown by the two-dot chain line in the same figure (D) to remove the wooden part 10a, and after being sawn, it is sliced from a predetermined direction as shown in the same figure (E) and (F). 2
A decorative veneer 11 in which two grain patterns are lined up is obtained.

The wooden mold portion 10a is used as it is as an upper mold for the next 7-rich molding, as shown in FIG. In addition, lower mold 1
uses a metal mold.

The wide veneer 7 is wide enough to cover the entire surface of the mold 9. Further, the narrow veneer 8 is used to cover at least one uneven pressure contact surface of the mold 9. For example, in Figure 4 (
When the width W of the mold 9 shown in Q is 470 am, a wide veneer 7 with a width of 48 mm is used, and a narrow veneer 8 with a width of 235 mm is used. Further, the combination of the wide veneer 7 and the narrow veneer 8 is at least the wooden part 10.
It is sufficient to use only the part a, and the narrow width veneer 8 is used for the other parts. Thereby, a large number of narrow width veneers 8 can be used, and the usable ratio of narrow width veneers in multi-row molding can be greatly improved. The wide veneer 7 and the narrow veneer 8 in the wooden mold part 10a can be combined by mixing the wide veneer 7 between the narrow veneers 8 at a ratio of 1 to 2 parts of soil. In the above example, 32 pieces of 480mm wide veneer f and 48 pieces of 235m wide veneer are combined.

In this way, the wooden part 10a is made of wide veneer 7 and narrow veneer 8.
The resulting wooden mold can be used as is, and unlike the conventional 7-rich manufacturing method that uses only narrow-width veneer, the wooden mold is thick enough to withstand being held from both ends of the wooden mold. There is no need to attach a flat plate, making processing easier.

It goes without saying that the same effect can be obtained even if only the wide veneer 7 is used for the wooden part 10a and the narrow veneer 8 is used for the other parts.

In addition, as mentioned above, when performing multi-row molding using narrow-width veneers instead of wide-width veneers, it is possible to improve the formability by joining adjacent veneers laminated within each uneven pressure welding surface by taping. will improve. That is, as shown in FIG. 5, the side edges of adjacent narrow-width veneers 12 are joined with tape 13 to make them wider, and as shown in FIG. and get 7 rich.

The tape 13 may be paper, nonwoven fabric, or woven fabric.

Attach with adhesive or adhesive using plastic film, ultra-thin wood veneer, etc.

By using the narrow veneer 12 in this way, the yield rate of the material veneer is improved, and in one molding process, compared to the conventional single-row mold, the two-row mold has twice the yield, and the three-row mold has three times the yield. Productivity increases by double. Furthermore, the drawback of using a wide veneer, that is, the veneer is pulled and cracked during compaction, is eliminated.

Example 1: Two white meranti dyed veneers were joined at their lateral line portions with a white nonwoven fabric coated with an adhesive, as shown in FIG. The dyed veneer is 15G wide.

The length was 280' am, the spacing between veneers was LO mm, and the nonwoven width was 50 mm. Next, it was molded using a double-row mold to obtain a flitch, which was then sliced to obtain a decorative veneer with a small grain pattern.

Example 2: A flitch was obtained in the same manner as in Example 1 except that dyed Almaciga veneer was used and joined with adhesive-coated black nonwoven fabric 16, and this was sliced into 7 pieces each to produce decorative veneer as shown in Figure 7. 15a and 15b were obtained.

Note that the narrow width veneer 15a can be connected vertically or horizontally.

Next, another method of manufacturing 7-rich will be explained with reference to FIGS. 8 to 12. That is, this manufacturing method
As shown in FIG. 9 and FIG.
A nonwoven fabric 18 impregnated with a resin (polyethylene, polystyrene, etc.) is interposed on the side edge of the fabric 7. Nonwoven fabric 1
8 is width 50~10011+! ! The weight is about 30 to 10
0y~, and the amount of resin impregnation is preferably about 10 to 50%.

This can prevent cracking of the 7-rich 19 and cracking of the decorative veneer obtained by slicing the flitch 19, and reduce the work of making saw marks on the sides of the flitch 19 for these purposes. can do. In addition, since the nonwoven fabric 18 does not serve as a mark indicating the grain direction of the veneer when pasting the decorative veneer, it is possible to eliminate the trouble of pasting the decorative veneer in the wrong direction.

Example 3: M10 polyester is 20-25 as shown in the diagram
% impregnated and the weight is 45y/lr? A brown nonwoven fabric 20 was laminated between a plurality of pine-dyed veneers 21 at their side lines and bonded together by pressure. The obtained 7 rich 22 is
A decorative veneer was obtained by slicing in the direction indicated by the arrow in Figure 0.

No cracks occurred in either the obtained flitch 22 or the decorative veneer.

The nonwoven fabric 20 shown in FIG. 10 has a width of about 20 to 30 mm, and this is because the 7-inch side surface was cut with lumber.

Example 4: As shown in Figure 11, 1 polystyrene is 30-3
A brown nonwoven fabric 23 impregnated with 5% and weighing 40y/- is interposed between the side edges of a narrow width veneer 24 dyed in Japanese cypress color.
As shown in Figure 2, pressure bonding was carried out using a two-row mold. Divide this into two in the center to obtain 7 rich 25 each, and these 7
Rich 25 was sliced. Since the obtained decorative veneer had nonwoven fabrics 23 of different colors adhered to the side edges, it became a mark to easily know the grain direction of the veneer.

〔Effect of the invention〕

According to this invention, narrow width veneers can be used, the yield of raw veneers is improved, and wooden molds can be easily created.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing a method for manufacturing a flitch using conventional wide veneer, Figure 2 is an explanatory diagram showing a method for manufacturing a flitch using narrow veneer, and Figure 3 is a diagram showing a method for making a wooden mold. FIG. 4 is a process explanatory diagram of an embodiment of the present invention, FIG. 5 is a plan view of two narrow veneers joined together with tape, and FIG. 6 is a diagram showing the molding state. Figures A and 7 are plan views of the obtained decorative veneer, Figure 8 is a plan view of the material veneer with nonwoven fabric pasted on the side edges, Figure 9 is a front view of the obtained flitch, and Figure 7 is a plan view of the decorative veneer obtained. FIG. 10 is a front view of the 7-rich flitch obtained in Example 3, FIG. 11 is a plan view of the veneer material used in Example 4, and FIG. 12 is a front view of the flitch obtained in Example 4. 7... Wide veneer, 8... Narrow width veneer, 9... Multi-row mold, 10... 7 rich, 10a... Wooden part, 11... Decorative veneer Figure 1 Figure 2 Figure 3 (B), / (C)

Claims (2)

[Claims] (1) On a mold with a plurality of uneven pressure contact surfaces arranged in a row, combine a wide veneer that covers the entire surface of the mold and a narrow veneer that is wide enough to cover at least one uneven pressure contact surface using adhesive. 7-rich manufacturing method characterized by laminating and press-bonding. (2) On a mold with a plurality of uneven pressure contact surfaces, combine a wide veneer that covers the entire surface of the mold and a narrow veneer that is wide enough to cover at least one of the uneven pressure contact surfaces using adhesive. A method for producing a decorative veneer, which comprises laminating and press-bonding to obtain a flitch, cutting the white part of the flitch horizontally to form a wooden mold, and slicing the other parts to obtain a decorative veneer. .