JPS5822105A - 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] This invention relates to a method for manufacturing decorative veneers.

A plurality of dyed veneers are laminated with an adhesive and pressed and bonded using an uneven mold to obtain an uneven laminated flitch, and each dyed veneer is sliced from a predetermined direction intersecting the laminated surface of the uneven laminated flitch. The conventional manufacturing method of laminated decorative veneer, which expresses the grain pattern of natural wood on the cut surface, has the following drawbacks: Each wood grain layer is made from one dyed veneer for each of the seven layers! I appear rounding,
The color tone of the center grain area and the end straight grain area of the grain pattern are the same, resulting in a lack of natural feel.

■ When expressing the summer wood layer with a grain pattern using a cut layer of adhesive used in lamination processing, the coloring of this adhesive becomes uniform,
The color tone difference of the summerwood layer between the central grain area and the edge straight grain area of the grain pattern cannot be expressed. Although there is a method of applying the adhesive in 9 parts using a double roll, etc., it is impossible to apply the adhesive in 9 parts with high precision, and it is not possible to impart the desired color tone change.

■ Since the dyed veneer is of uniform thickness over the entire area, uneven inflection areas are formed on the clamping surface.・The intermediate region and end portions are shown in Figure 1. As such, the pressure applied to the laminated dyed veneer is uneven (the pressure in the middle region is smaller than that at the edges), which tends to cause poor adhesion, and also tends to cause blurring when slicing the resulting uneven flitch.

Particularly, when embossing is applied to the intermediate region of a dyed veneer to express the bamboo heat found in natural cedar, the adhesion failure in the intermediate region further increases.

■ In order to avoid the above-mentioned adhesion failure, the dyed veneer 1 shown in Fig. 2 is made in which the middle region of the dyed veneer is made slightly thicker than both ends (in this example, the middle region is embossed). There is also a method using a veneer with different thicknesses, but such veneers with different thicknesses tend to crack during production and are difficult to mold.

Therefore, an object of the present invention is to provide a method for manufacturing a decorative veneer that can easily reproduce a natural-looking grain pattern without causing poor adhesion.

An embodiment of this invention is shown in FIGS.

That is, in this method of manufacturing a decorative veneer, a laminated decorative veneer having a grain pattern is obtained by the following process order.

(1) The intermediate region of the surface of the thin layer base material 2 that has been dyed in a predetermined color (for example, springwood color) is colored to resemble the color of the summerwood portion of the central grain-like region of the natural grain pattern. A first narrow width dyed veneer of 3'ft, dyed to resemble the color of the spring wood in the central grain area of the natural grain pattern, is polymerized using an adhesive. The surface of this narrow-width dyed veneer 3 is embossed to express bamboo grass (Fig. 3).

(2) On both sides of the surface of the ItJ thin layer base material 2,
It was dyed to resemble the color of the spring wood of the end straight-grained area of the natural wood grain pattern using an adhesive colored to resemble the color of the summer wood of the end straight-grained area of the natural wood grain pattern. A second narrow width dyed veneer 4.4, which is thinner than the narrow width dyed veneer 3, is polymerized and bonded by pressure to obtain a composite veneer 5 ((8) in the same figure).

(Q”).

(3) A plurality of composite veneers 5 are laminated with an adhesive, and a concave-convex mold 6 having a concave-convex inflection portion in the intermediate region of the clamping surface is used to press and bond them to obtain a concave-convex flitch 7 ( Figure 0).

(4) Slice the concavo-convex assembly friditch 7 mentioned above from a predetermined direction intersecting the laminated surface thereof, and bond it to the spring material portion consisting of the cut surface of the first and second narrow dye nest boards 3.4, etc. A laminated decorative veneer 8 is obtained in which summer wood parts consisting of cut surfaces of silica etc. alternate in a board pattern to reproduce the pattern of the board grain (same figure @), (F
) ).

Other specific conditions of this embodiment are listed below.

(1) First narrow width dyed veneer...Material ~ slice thickness 1.
Agatis decolorizing veneer of 0 sheets, dyeing ~ A2890.11 staining solution. Drying treatment ~ moisture content 30-60%.

(2) Second narrow width dyed veneer...Material ~ Slice thickness 0.
8 proverb agathis decolorization rate [, dyeing~A2g90.05%-
A289N 0.01% staining solution, drying treatment ~ moisture content 30
~60%.

(3) A transfer sheet in which a summer wood color ink layer is formed on a thin base material or release paper.

(4) First small width dyed veneer J@M! 1llll)--Uncolored urethane adhesive.

(5) Second narrow-width dyed veneer adhesive: a colored urethane adhesive that resembles the color of the transition area from the summer wood section to the spring wood section.

(6) Composite veneer... onto the transfer sheet. Second narrow width dyed veneer t-After adhesion, peel off the release paper.

In this way, the thin layer base material 2 is divided into the middle region and the left and right side regions, and the first layer has different thicknesses. Second narrow width dyed veneer 3.4
1-Polymerize and bond to form a composite veneer 5, and create unevenness t
The first narrow width dyed veneer B corresponding to the intermediate region of the clamping surface where the uneven inflection part of L16 is located is made thicker, and the second narrow width dyed veneer 4 corresponding to the end of the uneven mold 6 is made thinner. Because you can select each item, it's uneven! ! ! In the pressure bonding process according to No. 16, the pressure distribution becomes almost uniform between the ends and the middle region as shown in FIG. It is possible to prevent the occurrence of self-importance when obtaining 8t decorative veneers.

Also, 1st. The dyeing of the second narrow-width dyed veneer 3.4 and the coloring of the adhesive that adheres to the thin layer base material 2 can be used as desired, and the central plate-like area and the straight-grained edges of the wood grain pattern to be reproduced It is possible to easily express subtle color changes between regions, and it is possible to express grain patterns rich in natural pressure sensitivity.

Moreover, since narrow width veneers can be used as each narrow width dyed veneer 3.4, defective veneers with cracks, knots, etc. can be partially used, and edges caused by sawing can be left as they are. The wood utilization yield can be significantly improved.

Furthermore, this! l! In the example, a transfer sheet with a summer material foam ink layer formed on the surface is used as the thin layer base material 2 to which each narrow width dyed veneer 3.4 is polymerized and bonded, and a summer material is applied to the lower surface of the resulting composite veneer 5. Although the colored ink layer is transferred, a dyed veneer may be used instead of this, or a veneer having a conduit may be used as the thin layer base material 2, and the cut surface of this veneer may be used. Of course, a conduit portion may also be represented.

Another embodiment of the invention is shown in FIG. That is, the method for manufacturing this decorative veneer is the same as in the first example in the above embodiment. Second
As the small width dyed veneers 3' and 4', transfer-treated veneers with a summer wood color ink layer transferred to the surface are used. A veneer is used. The process of embossing the surface of the first small-width dyed veneer 3' is the same as in the previous FA embodiment, but here, embossing is also applied to the intermediate region of the surface of the thin layer base material 2'. The laminated layer composed of the first and second narrow-width dyed veneers 31. I try to express the bamboo grass based on the wood.

The other steps are the same as in the previous example.

In this way, the first. As the second narrow-width dyed veneer 3/, 4/ and the thin layer base material 1 are transfer-treated veneers with a summer wood color ink layer transferred to their surfaces, they have the bamboo heather that is found in natural cedar. The grain pattern can be reproduced elegantly and faithfully, and a laminated decorative veneer with a rich natural feel can be obtained.

Other effects include the previous 1i3 dormitory and usage.

In addition, as the thin layer base material 2', a transfer sheet may be adopted as in the previous example, and the first. The second narrow width dyed veneers 3', 4' are made of different materials (for example, the first
Of course, the narrow-width dyed veneer 3' may be made of agathis material 9, and the second narrow-width dyed veneer 4' may be made of Aius wood, Erima wood, etc.).

As described above, the method for manufacturing a decorative veneer of the present invention involves embossing the surface of the thin layer base material in the intermediate region of the surface with an adhesive, and polymerizing the narrow width veneer of the main path 1 to form the thin layer base material. A composite veneer forming process in which a second narrow width veneer thinner than the first narrow width veneer is polymerized and pressure-bonded on both sides of the surface of the material via an adhesive to form a composite veneer, and @compound An assembly flitch forming process in which a plurality of veneers are laminated with an adhesive and pressed and bonded using a pressing mold having an uneven inflection portion in the intermediate region of the pressing surface to obtain an uneven assembly flitch IJ 9,000; Since this method includes a slicing process of slicing the laminated furidachi from a predetermined direction that intersects the laminated surface thereof, it is possible to create a natural-looking sheet grain pattern without causing adhesion defects in the laminated 7-thickening process.
- Since it can be easily reproduced and a part or end of a defective veneer can be used as a material veneer, it has the effect of improving the wood usage yield.

As a method of obtaining a laminated decorative veneer using narrow width veneers, the method shown in FIGS. 6 and 7 is also possible. That is,
The method for manufacturing this laminated decorative veneer is carried out by the following process order.

(1) A material veneer 9 rotary-sliced to a predetermined thickness (0.5 m to 3.0 mm) is dyed to a predetermined material color and dried to obtain a first dyed skewer plate 10 (first Figure 6 (3).

Φ)).

(2) The board thickness t obtained from a wood species similar in physical properties (specific gravity, strength, material density) to the first dyed veneer 10 of the IFF period. A second dyed veneer 10' is obtained by dyeing a different material veneer 9' with a color equal to or less than 90 of the first dyed veneer 10 to the same material color as the first dyed veneer lO. (Illustration), (6)).

(3) The second dyed veneer 10' is cut in the width direction perpendicular to the fiber direction to produce a plurality of narrow width dyed veneers io'.
a-t-toku, C no small 111 dyed jl board 10kt-1t
rlB The widthwise direction of the first dyed veneer lO is lined up and pasted at predetermined intervals via an adhesive, and the fiber direction of the first dyed veneer lO facing in the longitudinal direction and the narrow width dyed veneer 10'a are attached. A composite veneer 11t with the fiber direction aligned is obtained ((6) in the same figure, Italy).

(4) A third dyed veneer 10' is obtained by dyeing the raw material veneer 9' to a material color different from that of the first dyed veneer lO.
Same figure (2), @).

ω) The third dyed veneer 10' and the composite veneer 11
are laminated in any combination via an adhesive (adhesive is applied to one side of the composite veneer 11 and the third dyed veneer 10' using a coating means such as a roll coater).
, the upper plate 128 r and the lower plate 12 b are pressed and bonded by pressing m12 to obtain the assembled flitch 13. Top 12 letters.

In order to absorb the unevenness of the composite veneer 11 on the pressing surface of the lower plate 12b, a sheet material 14, 14t made of foam sheet, rubber, paper, non-woven fabric, etc. is interposed (see FIG. 7(A). )
hmm.

(6) Slice from the predetermined direction intersecting the laminated surface of the assembled material, chip 13t (slice thickness 0.3- to 0.5 cm)
) to obtain a laminated decorative veneer 14 that is directly expressed as a straight-grained pipe material in which the cut surfaces of the composite veneer 11 and the third dyed veneer 10' are alternated (FIG. 1, (C)).

In this way, a composite veneer 1 is made using a portion of 10% narrow-width dyed veneer.
By obtaining 1, it is possible to give a width change to the grain layer of the wood grain pattern to be reproduced, and it is possible to create a laminated decorative veneer 14 with a rich natural feel.・A part or end of a defective veneer can be used as the material, and the wood utilization yield can be improved by 9.

As a method for obtaining a laminated decorative veneer based on a composite veneer obtained from a narrow veneer, the method shown in FIGS. 8 (4) to C) is also possible. That is, this method of manufacturing decorative laminated veneer reproduces the striped pattern seen in child lumber by the following process order.

(1) The side edges of several narrow-width dyed veneers 15, 15', which have been dyed in different colors, are polymerized with each other via an adhesive, and these narrow-width dyed veneers 15, 15' are polymerized. Using a press 16't, which has a pressing protrusion 16M at a position corresponding to the lower surface of the section, the overlapping part is pressed and bonded, and several narrow width dyed veneers 15, 15'-sp. A composite veneer 17t is obtained which is composited in a row and divided into colors of each narrow dyed veneer 15, 15', etc. (FIG. 8).

(2) A plurality of composite veneers 17 are laminated with a blinding agent interposed therebetween and bonded by pressure using a corrugated press 18 to obtain an assembled flitch ((6) in the same figure).

(3) The laminated flitch is sliced in the direction intersecting the laminated surface of the composite veneer 17 to obtain the laminated decorative veneer 19 in which the cut surface of each composite veneer 17 is expressed as a wood grain layer (Fig.
) ).

Other specific conditions are as follows.

(1) Small-width dyed veneer: bow, Ow+ thick agathis wood, moisture content 30 to 60 inches.

(2) Composite veneer molding conditions: adhesive - urethane adhesive, pressing - applying a pressure of 20 to 30 kg/cIII to the pressing protrusion for 1 hour.

In this way, a plurality of nine narrow-width dyed veneers 15, 15', etc., dyed in different material colors, are combined into one composite veneer 17, and this composite veneer 17t-laminated flitch 11 in each wood grain layer of the laminated decorative veneer 19 to obtain the color classification given to the composite veneer 17.
Composite veneer 17f with color classification, which can easily reproduce the striped pattern of exposed, teak wood, etc.: To obtain it, it is necessary to go through the process of dyed veneer t-laminated flitch slicing with different material colors. This makes it possible to provide stable color divisions, reduce the occurrence of love at first sight caused by slicing, greatly reduce the amount of adhesive used, and facilitate manufacturing itself.

In addition, when the side edges of the narrow-width dyed veneers 15, l5'... that overlap each other are pressed and bonded using the press 16 having the pressing protrusions 161..., the overlapping portions are heated or steam-treated. Alternatively, hot breath treatment may be performed by locally heating the area.

In addition, the plural narrow-width dyed veneers 15, 15', etc. that make up one composite veneer 17t are not limited to veneers of the same tree species, but one is an agathis veneer and the other is a ius wood veneer. Of course, it is also possible to mix and use veneers of multiple types.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the pressure distribution in the case of pressure bonding in the conventional example, Fig. 2 is a side view of the material veneer in the conventional example, and Fig. 3 shows the example of the present invention. FIG. 4 is an explanatory diagram showing the pressure distribution in the case of pressure bonding in this embodiment, FIG. 5 is a process explanatory diagram showing another embodiment of the present invention, and FIG. ) is an explanatory diagram of the first half of the process showing an example of a method for producing laminated decorative veneers using small-width veneers; It is a process explanatory drawing which shows another example of the manufacturing method of the laminated decorative veneer using narrow width heavy board. 2.2'... Thin layer base material, 3.3'... First narrow width dyed veneer, 4, 4'... Second narrow width dyeing rate &, 5...;
・Composite veneer, 6... Uneven type, 7... Uneven laminated flitch, 8... Laminated decorative heavy board Figure 1 Figure 4 (E) (F) Figure 3

Claims (1)

[Scope of Claims] (1> Embossing is applied to the surface of the thin layer base material in the intermediate region of the surface thereof through an adhesive, and a ninth narrow-width veneer is polymerized on both sides of the surface of the thin layer base material. A composite veneer forming step in which a second narrow-width veneer thinner than the first narrow-width veneer is polymerized and pressure bonded via an adhesive to form a composite veneer, and a plurality of composite veneers are bonded together with an adhesive. an assembly flitch forming process in which a concave-convex assembly flitch is obtained by laminating the 7-rich concavo-convex assembly by pressing and adhering it with a clamping die having an uneven inflection portion in the intermediate region of the clamping surface; A method for producing a decorative veneer, comprising a slicing step of slicing the grain from the direction. The second narrow-width veneer is a dyed veneer that has been dyed in the color of the straight-grained end portion of the natural board grain pattern, and each adhesive for bonding the first and second narrow-width veneers to the surface of the thin layer base material is The method for producing a decorative veneer according to claim 1, wherein the coloring is varied in accordance with the difference in color tone between the central summer material layer and the end summer material layer of the natural grain pattern. (3) The first and second narrow-width veneers and thin layer base materials are transfer-treated veneers with a summer wood color ink layer transferred onto the surface #)9
The method for manufacturing a decorative veneer according to claim 1, wherein the thin layer base material is embossed in the intermediate region of its surface.