JPS6132966B2 - - Google Patents

Description

[Detailed description of the invention]

This invention relates to a method for manufacturing decorative veneers. As shown in Figure 1, the grain of natural cedar wood veneer obtained by cutting natural cedar etc. is generally deformed in the chevron shoulder part 2 of grain 1, as shown in Figure 1.
This creates a beautiful waveform. Since such natural cedar wood veneers are expensive, decorative veneers with natural cedar-like wavy wood grains have been manufactured using inexpensive low-grade logs in the following manner. That is, first, multiple raw wood veneers made by cutting low-grade logs or bleached or dyed veneers are laminated together using an adhesive that has a summer wood color. , one mold having a convex part on the mold surface and the other mold having a concave part corresponding to this convex part are sandwiched and pressed together, and the part of the laminate that becomes the deformed part of the wavy wood grain is made into the concave part (convex part). Deform along the second
A flitch 4 having a deformed portion 3 as shown in the figure is made. Next, when this frit 4 is sliced in the direction of the arrow, the wood grain becomes wavy due to the deformed portion, and a decorative veneer with wavy wood grain as shown in FIG. 1 can be obtained. However, when manufacturing a decorative veneer with wavy wood grain in this way, if you want to change the shape of the wavy wood grain, you have to change the mold each time, which increases the manufacturing cost of the mold and increases the cost. The drawback was that it took a lot of time to change the molds. In addition, when pressing is performed using a mold with concave and convex parts, sufficient clamping pressure is not applied to the part away from the mold surface, so the part where the wood grain will be deformed in that part is not sufficiently deformed. Therefore, the expression of the waveform of the wood grain was insufficient.
Therefore, it is not possible to produce a decorative veneer in which the wavy wood grain is sufficiently exposed from any part of a single frit, and some parts are discarded, resulting in poor production efficiency of the decorative veneer. This invention was made in view of the above circumstances, and consists of laminating a plurality of veneers of material, and making this laminate,
A mold plate having an appropriate number of protrusions at appropriate positions on the mold surface can be changed at the installation position and after installation, and can be replaced to create a frit by pressing, and this frit is processed. The gist of this is to obtain decorative veneers. Next, an example of this invention will be explained. That is, as shown in FIG. 3, there is a lower mold 6 on which one protrusion 5 is attached on the mold surface so that the attachment position and number of attachments can be changed and can be replaced, and the protrusion 5 of the lower die 6.
An upper mold 9 having a rubber sheet 8 having a recess 7 corresponding to the mold surface is prepared, and a plurality of material veneers 6 are placed on the mold surface of the lower mold 6 in a summer wood color. Laminate using adhesive. Next, from this state, the upper die 9 is lowered to compress the laminate, and the protrusion 5 of the lower die 6 deforms the part of the laminate where the wood grain is to be changed, creating a frit (not shown) with the deformed part. figure)
Create. In this case, the elasticity of the rubber sheet 8 attached to the mold surface of the upper mold 9 effectively performs the clamping. Next, slice the fritchi thus obtained. As a result, as shown in FIG. 4, a decorative veneer 11 having a wavy wood grain 10 is obtained. In this case, if a larger protrusion is used in place of the protrusion 5 shown in FIG. 3, a decorative veneer 13 with large wavy wood grains 12 can be obtained as shown in FIG. If the mounting position of the protrusions is changed from the state shown in FIG. 3 to the center, a decorative veneer 15 having a wavy wood grain 14 in which the troughs of the waves are closer to the center as shown in FIG. 6 can be obtained. If one more protrusion is added for a total of two, a decorative veneer 17 with a wavy wood grain 16 having three wave crests as shown in FIG. 7 can be obtained. Note that the protrusions 5 may be attached to the upper die. In this way, according to this example, the wavy wood grain can be created by changing the mounting position, number, and size of the protrusions (the recesses of the rubber sheet can also be changed accordingly) without changing the model. The shape can be easily changed, thereby making it easy to express various shapes of wavy wood grain. Next, another example of this invention will be explained.
In this example, the material veneer is divided into small pieces and pressed together. That is, half of the plurality of material veneers are laminated on a lower mold 19 shown in FIG. 8, on which a rubber sheet 18 is attached to the mold surface, via an adhesive having a summer wood color. This is pressed between a lower mold 19 and an upper mold 21 on which one protrusion 20 is replaceably attached to the mold surface to form a first subdivision frit 23 having a deformed portion 22 on the lower mold 19. Create. Next, half of the material veneers remaining on this subdivision fritsch 23 are laminated with an adhesive having the color of summer wood, and the upper mold 21
The protrusion 20 is changed to a small protrusion 24 so as to fit the deformed portion 22 of the first subdivision frit 23, and then the protrusion 24 is pressed. As a result, a second subdivision frit 26 with a deformed portion 25 on top of the first subdivision flitch 23 is formed.
is formed and integrated with the first subdividing fritch 23. In this way, a flitch 27 having deformed portions formed throughout is obtained. In this way, according to this example, a plurality of veneers are divided into small pieces and pressed together, and after the first small piece is pressed, the protrusion 20 is replaced with a small protrusion 24 and the next one is pressed. Fritsch 2, which has a deformed part all over, in order to compress the subdivided portions.
7 will be obtained. Therefore,
A decorative veneer (not shown) in which the wavy wood grain is sufficiently expressed can be manufactured from the entire fritches 27, and there is no possibility of producing defective products with insufficient expression of the wavy wood grain. In the above explanation, the fritchi is subjected to slicing, but the processing to be performed to the fritchi is not limited to slicing, and includes sawing, sawing,
Planing, polishing, sandpapering, etc. may be used, and the shape of the resulting laminated wood is not limited to the shape of a decorative veneer, but may also be in the shape of a plate, column, etc. Further, as the material veneer, resin paper, which is obtained by impregnating a base material such as paper with a synthetic resin liquid and drying it, may be used. As described above, the present invention laminates a plurality of veneers of materials, and attaches this laminate in such a way that an appropriate number of protrusions are installed at the position of the mold surface, and the attachment position and the number of attachments can be changed, and the laminated body can be attached interchangeably. In order to create a frit by pressing using a mold plate that has been prepared, and then processing this fritch to obtain laminated wood, there is no need to change the mold.
The shape of the wavy wood grain can be changed by changing the mounting position, number, size, etc. of the protrusions. Therefore, the cost and effort required to change the shape of the wavy wood grain is reduced. Also, multiple pieces of veneer material are divided into small pieces and pressed together, and after pressing one small piece, the protrusions on the mold plate are replaced with smaller protrusions, and the next small piece is pressed. At this time, it becomes possible to form parts that become deformed parts of the wood grain even in parts of the fritches that are far from the mold surface.
Therefore, it is possible to obtain a decorative veneer in which the wavy wood grain is sufficiently expressed from any part of a single frit, and there is no possibility of producing defective products with insufficient expression of the wavy shape of the wood grain. be. Next, examples will be described. [Example 1] A plurality of raw wood veneers were dyed in a spring wood color under the following conditions. (Dyeing conditions) Dye: Suminol Milling Brown
3G, manufactured by Sumitomo Chemical Co., Ltd....0.100% by weight (hereinafter abbreviated as "%") 〃: Lanafst Yellow 2RL, manufactured by Mitsui Toatsu Co., Ltd....0.015% 〃: Sumipon WB, manufactured by Sumitomo Chemical Co., Ltd....0.100% Bath ratio: 40-50 Dyeing temperature: 95±2°C Dyeing time: 4 hours Next, the following colored resin composition was applied to the surface of the obtained spring wood color-dyed veneer to form a resin surface layer (summer wood color). (Colored resin composition) Dye: Suminol Milling Brown 3G
…0.8% 〃: Rana First Yellow 2RL …0.8% 〃: Raniil Brown BL, manufactured by Sumitomo Chemical Co., Ltd.
…0.1% Resin composition: Vigetalime UA-131, manufactured by Sumitomo Bake Co., Ltd. …100 parts by weight (hereinafter abbreviated as “part”): Sumitaku, manufactured by Sumitomo Bake Co., Ltd.
...50 parts: Propylene carbonate ...2.5 parts: NH ₄ Cl (20% aqueous solution) ...5 parts Next, the multiple veneers on which the resin surface layer has been formed are glued together with the resin surface layer facing upward. Apply agent (KU-224S manufactured by Konishi Co., Ltd.) (application amount
100g/m ² ) and laminated. Next, this laminate was formed into the first protrusion (wooden square rod, 3t×
10×1800mm) 28 and second protrusion (wooden square bar,
5t x 10 x 1800mm) 29 is removably attached to the mold surface, and a rubber sheet 31 is placed on the mold surface.
is clamped with the upper die 32 on which the
15Kg/cm ² for 2 hours) and then fritted. Next, this fritsch (not shown) was sliced to obtain a decorative veneer (not shown). A wavy wood grain appeared on the surface of the obtained decorative veneer. [Example 2] A plurality of dyed veneers with a resin surface layer were produced in the same manner as in Example 1. Next, divide these into 30 sheets each, and glue the first 30 sheets with adhesive (KU-
224S) (coating amount: 100g/m ² ) and laminated.
This is the same upper mold 32 (9th mold) used in Example 1.
) and a lower die (only the second protrusion 29 is attached) 30 (pressure 17 kg/cm ² , time 30
minutes) and made the first subdivision fritsch. Next, the next 30 sheets were stacked on top of this subdivided frit and pressed in the same manner as above to create a second subdivided frit. This operation was repeated a total of 6 times to create a flitch in which 6 subdivided flitches were integrated. In this case, for the second and subsequent press tightening, protrusions having dimensions as shown in the following table were used in place of the second protrusions 29 of the lower die 30.

[Table] Next, the obtained fritsch was sliced to obtain a decorative veneer. In this case, a decorative veneer in which the wavy wood grain was sufficiently expressed from any part of the frit was obtained, and there were no defective products in which the wavy wood grain was insufficiently expressed.

[Brief explanation of the drawing]

Figure 1 is a plan view of a natural cedar wood veneer, Figure 2 is an explanatory diagram of a conventional example, Figure 3 is an explanatory diagram of an example of the present invention, and Figures 4 to 7 are decorations obtained thereby. A plan view of the veneer, FIG. 8 is an explanatory diagram of another example of the present invention, and FIG. 9 is an explanatory diagram of one embodiment of the present invention. 5... Projection, 6... Lower die, 7... Recess, 8... Rubber sheet, 9... Upper die, 10... Wavy wood grain, 11... Decorative veneer.

Claims (1)

[Scope of Claims] 1 A plurality of veneers of material are laminated, and this laminated body is attached to the mold surface with an appropriate number of protrusions at appropriate positions so that the attachment position and the number of attachments can be changed, and the laminated body can be attached interchangeably. Create a fritsch by pressing using the mold plate provided,
The production of decorative veneers is characterized by processing this fritsch to obtain decorative veneers. 2. A patent for dividing a plurality of veneers of material into small pieces and pressing them together, and after pressing one small piece, replacing the protrusions on the template with small protrusions and pressing the next small piece. A method for manufacturing a decorative veneer according to claim 1. 3. The method for manufacturing a decorative veneer according to claim 1 or 2, wherein the fritting process is a slicing process.