JPS5845927B2 - Manufacturing method of artificial decorative veneer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing artificially decorated veneers.

In the conventional manufacturing method of artificial decorative veneers, multiple veneers coated with adhesive are laminated, and the laminated veneers are sandwiched and pressed between upper and lower molds. The flitch is then sliced to form an artificial decorative veneer.

However, in the conventional example, since the adhesive hardens slowly, a flitch is formed and the veneer may peel off when the upper and lower molds are opened.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a method for manufacturing artificial decorative veneers that can accelerate curing by moistening the adhesive during pressing, thereby shortening the manufacturing time. That is.

The present invention will be explained in detail below with reference to the drawings.

As shown in FIGS. 1 and 2, a large number of nozzle holes 2 are bored in the lower die 1 of the press, and a hose 3 is connected to the nozzle holes 2.
High pressure wet steam is blown out from the nozzle hole 2 of the lower mold 1.

Veneer is made by cutting raw wood with a rotary race or cutting it into slices.

Several tens (for example, 30 to 50 pieces) of veneer 4 coated with an adhesive such as urethane adhesive (the amount of adhesive applied is, for example, 100 to 2 oor/rr) are pressed into the upper mold 5 and the lower part of the press. The veneer 4 is laminated between the molds 1, and then pressed together with a press pressure of, for example, 10 to 20 degrees, and wet steam is blown from the nozzle hole 2 of the lower mold 1 to harden the adhesive of the veneer 4. A flitch element body 6 is formed.

In this case, by spraying wet steam, the curing time of the adhesive can be shortened by 5 minutes, thereby improving productivity.

When the adhesive is completely cured, the upper mold 5 is lifted up, several dozen veneers 4 coated with new adhesive are laminated on the lower mold 1, and pressed together again to form a double-thick deformed flitch element 6. form.

In this case, the flitch element body 6 is adhered to the lower surface of the upper die 5, and the flitch element body 6 rises together with the upper die 5, so that the veneer 4 can be easily laminated onto the lower die 1.

Furthermore, since the adhesive is completely cured by the ejection of wet steam, there is no possibility that the veneer 4 will fall when the upper die 5 is raised.

By repeating such operations (operations 2 to 3 in Figure 3), the number of veneers 4 is gradually increased, and finally a predetermined layer of flitches 8 (FIG. 3, E) is formed.

Afterwards, this flitch 8 is sliced to form an artificial decorative veneer 8 in which the layer of the part that will become the annual ring appears as a clear thick line as shown in Fig. 3.

As described above, when the laminated veneer is pressed between the upper mold and the lower mold, high-pressure wet steam is sprayed from multiple nozzle holes provided in the lower mold to moisten and harden the adhesive. Therefore, multiple adhesive layers can be moistened at the same time to accelerate curing, and since they are moistened at the same time when compressed, no special process is required for wetting, and the adhesive can be cured quickly. In addition to this, the manufacturing time can be shortened.

[Brief explanation of the drawing]

Fig. 1 is a partial cross-sectional perspective view of the lower die of a press used in an embodiment of the present invention, Fig. 2 is a longitudinal sectional view showing a press state in an embodiment of the present invention, and Fig. 3 is a perspective view of a lower die of a press used in an embodiment of the present invention. It is an explanatory diagram showing an example work order.

Claims (1)

[Claims] 1 Laminate multiple veneers coated with adhesive, sandwich and press the laminated veneers between the upper and lower upper and lower molds to form a flitch, and slice this flitch. In the method for manufacturing artificial decorative veneers, when the laminated veneers are pressed between an upper mold and a lower mold, high-pressure moist steam is sprayed from multiple nozzle holes provided in the lower mold. A method for producing an artificial decorative veneer, characterized by curing the adhesive by moistening the adhesive.