JPS6354201A - Manufacture of decorative veneer - Google Patents

Abstract

(57) [Abstract] 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 method for manufacturing a decorative veneer that expresses the transitional color of the summerwood part unique to natural cedar.

[Kekkei technology]

Conventionally, in order to artificially express a decorative 11-slope that resembles natural cedar, composite materials such as printed layers, non-woven fabrics, sliced colored veneers, etc., are adhered to one side of a spring-colored veneer. ll
A composite flitch was created by laminating and pressing a plurality of composite veneers together using an adhesive, and then slicing the composite flitch from a direction intersecting the laminated surface.

However, with this method, the 61st! As shown in FIG. 1, there is no transition part 22 that is lighter in color than the summer wood part 21 that transitions from the spring wood part 20 to the summer wood part 21, and it is simply composed of a summer wood part and a spring wood part. , there was a problem that the natural feel and feel were inferior.

[Purpose of the invention]

An object of the present invention is to provide a method for producing a decorative i-slope that can express a transitional color of the summer material with a natural feel.

[Disclosure of the invention]

The method for manufacturing a decorative veneer of the present invention includes the steps of obtaining a composite material in which a summer wood transition color veneer and a summer wood color printing layer are laminated in this order on the upper surface of a spring wood color veneer, and the composite material The method includes a step of press-bonding a plurality of flitches using an adhesive to obtain a flitch assembly, and a step of slicing the flitch assembly from a predetermined direction to obtain a decorative veneer.

As described above, according to the present invention, since the summer wood transition color veneer is interposed between the spring wood color veneer and the summer wood color printing layer,
The transitional color of the summer wood, which is unique to natural cedar, can be expressed on the decorative veneer, giving it an excellent natural feel. Moreover,
A decorative veneer having a summer material transition color can be easily manufactured with high productivity.

Example The present invention will be explained in detail based on FIGS. 1 to 5.

That is, the method for manufacturing a decorative veneer of the present invention consists of the following steps.

First step: As shown in Figures 1 (A) to (C), after applying the adhesive 3 to the upper surface of the spring wood colored veneer 1 using the roll coater 2, the summer wood transition color is applied to the upper surface. A composite material 6 is obtained by sequentially stacking the veneer 4 and the transfer sheet 5 for expressing the color of the summer wood part and pressing them together using a press or the like.

The spring wood color veneer is a wooden veneer that has been previously dyed in the spring wood color. The summer wood transition color veneer 4 is a thin wooden board about 0.2 m thick that has been dyed in advance in the summer wood transition color. The transfer sheet 5 is obtained by forming a dark color printed layer 5b on one side of a release sheet (5 m). This summer wood color printed layer 5b is transferred by the tackiness of the adhesive 3 that seeps out onto the surface of the summer wood transition color veneer 4 during pressing. After pressing, the release sheet 5a is peeled off and removed.

The pressing conditions must be set so that the adhesive 3 seeps out onto the surface of the summer wood transition color veneer 4, and other characteristics must be taken into consideration. Figure 2 (A) is a graph in which the maximum pressure range is set based on the relationship between the seepage of the adhesive 3 and the yield loss with respect to the clamping pressure, and Figure 2 (B) is a graph that shows the relationship between the adhesive 3 seepage and yield loss with respect to the clamping pressure. This is a graph in which the optimum adhesive application amount is set based on the relationship between release and slicability. Furthermore, FIG. 2C is a graph in which the optimum adhesive viscosity is set from the relationship between adhesive viscosity, seepage, and adhesiveness.

By the way, clamping pressure 15kg/a IIS adhesive application amount 1
20-130 g/nl, adhesive viscosity 3000-400
When composited under 0cP conditions, molded and then sliced, it was possible to express a transition area with a natural feel.

Second step: As shown in FIG. 1(D), a plurality of sheets of the obtained composite material 6 are laminated via an adhesive and bonded by pressure using a concave-convex mold 7.

Third step: As shown in FIG. 1(E), the obtained flitch assembly 8 is sliced from the direction intersecting the laminated surface thereof.

Thus, as shown in FIG.
The summer wood transition color 22 appears between 1 and 1, giving it an extremely natural look.
It will be full of natural feeling.

As the summer wood transition color veneer, instead of the simple wooden thin board as described above, a plurality of veneers 9 dyed in the summer wood transition color are bonded to MNL pressure using adhesive as shown in Fig. 3. Tighten and glue to create a composite flitch lO with transition color for the summer wood part, and add it to a thickness of 0.2 f from the direction intersecting the laminated surface (indicated by the - dotted chain line).
A summer wood transition color veneer 49 sliced into l pieces can be used.

As shown in FIG. 4, when the summer wood transition color veneer 4 is laminated on the spring wood color veneer 1 via the adhesive 3, the adhesive does not touch the surface at the adhesive layer 11. Because it doesn't seep out,
Even if the transfer sheet 5 is combined with this, the adhesive layer 11
The color printing layer 5b of the summer wood part is not transferred in the part, and therefore the summer wood part 12 becomes partially cut off as shown in FIG. Become.

In the above description, the summer material color printed layer 5b was provided using the transfer sheet 5, but the printed layer 5b may be provided by means such as printing or coating.

〔Effect of the invention〕

According to this invention, since the summer wood transition color veneer is interposed between the spring wood color veneer and the summer wood color printing layer, the summer wood transition color unique to natural cedar is applied to the decorative veneer. It can be expressed and has an excellent natural feel. Moreover, a decorative veneer having a summer material transition color can be easily manufactured with high productivity.

[Brief explanation of the drawing]

Figure 1 is a process explanatory diagram of an embodiment of this invention, Figure 2 (A)
~(C) are graphs showing the optimum pressure during compaction, the optimum adhesive application amount, and the optimum range of adhesive viscosity, respectively; Fig. 3 is an explanatory diagram showing the manufacturing process of summer wood transition color veneer; Fig. 4 is an explanatory diagram showing the composite process, and Figure 5 is a plan view of the obtained decorative veneer.
FIG. 6 is a plan view showing the grain pattern of natural cedar. DESCRIPTION OF SYMBOLS 1... Spring wood part color veneer, 3... Adhesive, 4... Summer wood part transition color veneer, 5... Transfer sheet, 5b... Summer wood part color printing layer, 8... ... Collection of flitch ml Yabe Ir'r ward so-] Meng O'

Claims (2)

[Claims] (1) A step of preparing a composite material in which a summer wood transition color veneer and a summer wood color printing layer are laminated in this order on the top surface of a spring wood color veneer, and bonding multiple sheets of the composite material with an adhesive. A method for manufacturing a decorative veneer, comprising the steps of: obtaining a flitch assembly by pressing and bonding the flitch through a material; and slicing the flitch assembly from a predetermined direction to obtain a decorative veneer. (2) The summer wood transition color veneer is a laminated surface of the veneer obtained by laminating a plurality of veneers dyed in the summer wood transition color using an adhesive and bonding them by pressure. The method for manufacturing a decorative veneer according to claim (1), wherein the decorative veneer is sliced from a crossing direction.