JP2002240002A - Veneer for decorative sheet of novel pattern and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a veneer for a decorative sheet of a novel pattern made of a natural wood as a stock, and to provide a method for manufacturing the same. SOLUTION: The method for manufacturing the veneer for the decorative sheet comprises (a) a step of preparing the required number of veneers of two or more types of different wood type having a large difference of three attributes of colors and similar woody properties, (b) a step of forming a rugged curved surface state corresponding to a rugged curved surface on the veneer by inserting the veneer of the different wood type between a pair of upper and lower pressing dies by using the pair of the upper and lower dies having die surfaces of the rugged curved surfaces corresponding to an object pattern and die pressing, (c) a step of laminating an adhesive via the veneers in combination of the pressed veneers in a predetermined order, disposing the veneers between the upper and lower dies of the press mold and pressing the veneers, and (d) a step of forming the veneer having the novel pattern in a desired thickness by cutting the laminate obtained by pressing in a direction perpendicularly crossed with a surface of the laminate. The veneer for the decorative sheet obtained by the method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for producing a veneer for a decorative sheet having a new pattern using natural wood as a raw material, and more particularly to a method for producing two or more species of tree species having different colors. After embossing all of the required number of individual veneers, they are combined in a predetermined order, laminated and pressed, and then cut, resulting in a pattern veneer that can be applied to the surface with various designable designs. The present invention relates to a method for manufacturing a semiconductor device. Furthermore, the present invention relates to a veneer having a mixed pattern of different tree species and a decorative sheet using the veneer, which is produced according to the production method.

[0002]

2. Description of the Related Art Conventionally, interior materials for buildings, interior materials for vehicles,
As a decorative material for surface covering materials for various equipment such as furniture and furniture, it is mainly used for coloring paper, textiles, synthetic resins, etc. with dyes and pigments to make various designs. (Including a laminated sheet in which such a surface material is lined with various materials) is used. 2. Description of the Related Art For interior materials for buildings, interior materials for vehicles, furniture, and the like, those made of natural wood and given a grain pattern are popular because they have a sense of quality and warmth. The use of natural wood as a raw material for decorative materials can reflect the grain as it is, and is preferable.However, in view of the protection of wood resources and production costs in recent years, paper and resin There are also many decorative sheets and the like in which a pattern imitating the grain of a tree using a sheet or the like as a raw material is applied by printing or the like. Also, many decorative veneers (artificial heather veneers) for decorative sheets made of inexpensive wood have been developed. That is, in general, a large number of material veneers as raw materials are laminated via an adhesive, subsequently hot-pressed, and then the obtained laminate is cut again,
It is manufactured by a method of finishing a veneer of a desired thickness.

At present, almost all decorative sheets made of natural wood, including the artificial veneer veneer, are intended to be used as substitutes for natural wood. That is, in these decorative sheets, the main focus is on how to faithfully represent the natural grain of wood, heather, or skin of a natural tree that appears naturally.

[0004]

Since natural wood is one of the above-mentioned decorative materials, it is not limited to natural wood as a raw material, as in the prior art.
If a variety of veneer surfaces can be stocked, new materials can be provided while maintaining the luxurious feel of natural wood and the warmth of contact. In other words, using natural wood as a raw material, conventionally, if it is possible to create a decorative board having a pattern excellent in aesthetic appearance that is completely different from a pattern that can be imagined from wood, it will conform to the tastes of consumers today, and It will provide new materials that have warmth and a sense of quality,
Since the range of designs that can be selected for the application can be expanded, it is very commercially advantageous. Accordingly, an object of the present invention is to use a natural wood as a raw material, but to use a different pattern from the grain or heather that the natural wood appears, that is, a new pattern of a decorative pattern having a design that is far from the natural grain pattern. An object of the present invention is to provide a method for effectively manufacturing a veneer sheet. Another object of the present invention is to provide a veneer for a decorative sheet having a new pattern obtained according to the method of the present invention, and a decorative sheet having a fibrous sheet or a synthetic resin film adhered to the back surface thereof. Other objects will be understood by referring to the following description and claims, and the drawings.

[0005]

The inventor of the present invention prepares a required number of veneer veneers each made of two or more natural trees of different tree species, and uses a pair of upper and lower press dies having predetermined uneven curved surfaces. After embossing, embossing, combining and bonding in a desired order, and then laminating the material veneer in a direction crossing the laminating surface, the laminated veneer is laminated on the same plane. It has been found that a completely new pattern, which has never existed before, can be obtained by the different shades of the color of the veneer material. Therefore, in detail, the present invention relates to a method for manufacturing a veneer for a decorative sheet, comprising the following steps. a) two or more kinds of material veneers composed of different tree species, in which there is a large difference between the three attributes of the colors, but the woody materials are similar, but the required number of sheets are prepared; b) By using a pair of upper and lower press dies on which a mold surface of an uneven curved surface corresponding to the pattern to be formed is formed, the material veneer of the different tree species is inserted between the upper and lower mold surfaces and embossed, so that the uneven curved surface is formed. Forming corresponding concave and convex curved surface shapes on the veneer veneer; c) laminating the embossed veneer veneer material veneers in a predetermined order and interposing an adhesive between the veneers. And then placing it between the upper mold and the lower mold of the press mold and clamping, and d) cutting the laminate obtained by the compression in a direction crossing the lamination surface to obtain the desired The step of making a veneer having a thick mixed pattern of different tree species. Further, as a preferred embodiment of the present invention, the present invention relates to a method for producing a veneer for a decorative sheet, wherein light veneer veneers of two tree species having different hues are used in combination as the veneer veneer composed of the different tree species. Still further, the present invention provides a veneer sheet for decorative sheet using a combination of a light-colored material veneer of two or more tree species having different hues and a dark-colored material veneer as the material veneer composed of the different tree species. About the method

Further, the present invention relates to each veneer for a decorative sheet produced by the above method.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A veneer for a decorative sheet according to the present invention is, for example, a natural wood grain disclosed in Japanese Patent Application Laid-Open No. Hei 9-12110, which has a high market value.
e) An artificial heather veneer that faithfully represents (e.g., ball heather, bird's eye heather, etc.) can be made using a method of manufacturing a natural wood having no heather as a raw material. That is, the pattern veneer of the present invention uses a pair of upper and lower press dies on which a concave and convex curved surface corresponding to a previously designed target pattern is formed, and is similar to the method described in the above document. It can be manufactured in the order of steps. Specifically, it is performed by the following method.

[0008]-Regarding step a)-This step is a step of preparing a required number of two or more types of material veneers each composed of different tree species. The different wood species used for each veneer have a large difference in the three attributes of each color in order to create a pattern by combining veneers, but the wood quality is similar in consideration of embossing and adhesiveness Choose between. The wood species used in the present invention is arbitrary. For example, two or more species can be appropriately selected from the following tree species.
Material veneer surfaces cut from these species have their own colors. For example, as domestic timber, Karamatsu, cedar (Yakusugi), cypress, oak, zelkova, cherry, yu, black persimmon, mulberry, tochi, maple, china,
Kusunoki, Katsura, Sophora, Yellow tomato, Tide, Tamo, Yachidamo, Japanese cypress; Sycamore, Rosewood, Teak, Mahogany, African mahogany, Rawan, Meranchi, Kokutan, Rosewood, American black walnut,
Karin, Zebrawood, Manganoshiro, Brazilian Rose, Versimon, Silver Rose, Parma, Silky Oak, Silver Heart, Thai Wanks, Cherry, Miltre, Black Leo, White Leo, Sapele, Bubinga, Makore,
Madrona, maple, claro walnut, ash. The colors of veneers obtained from the above tree species or other tree species are, for example, white (Paumalfin, Yellow Poplar, etc.), grayish white (Onigumi, Iroban, etc.), light grayish brown (Sen, Agathis, Mansonia, Perpoc, etc.), yellowish white (China, Ramin, Parosapis (Mersawa), Birch, etc.), pale yellowish white (Aodamo, Yamaguwa, Elima, Kaya,
Mangashinoro (white merunch), ply, yellow birch, oveche (African white wood), labra, red pine, etc., pale yellow (asunaro, ginkgo,
Lodgepole pine, etc.), orange yellow (Sarco Cephalas (Y
ellow cheese wood), yellow (pauamaleo, aralibaamarero, ampulana, etc.), brown (tamo (yachidamo), wig, white ash, harunire, mizunara, larch, shioji, etc.), yellowish brown (zelkova, camphor tree, yellow merchi, Yellowfin, karin, limba, zebrawood, etc.), light yellowish brown (linden tree, horse chestnut, basswood, African paddock, elima, eyon (Shirotagaya), etc.), golden brown to brown (teak, merbao, asamera etc.), dark brown (Inujuju, black bottle, etc.), light brown (beach (American beech), elm, drill, etc.), dark reddish brown (Asada, rosewood, dark red merunch)
(Rawans), yew, etc.), reddish brown (Yamazakura, Niatou, Madrona, black cherry, urine, mahogany, rosewood, chitra, chiama etc.), pink to dark reddish brown (cedar, kokutan (black stripes), macore, bubinga etc),
Light reddish brown veneer (Saperi, Kapoor (Kapor), Benihi, Chamelere, etc.), light reddish color (hinoki, red pine, etc.), light reddish brown (Itaya maple, red birch, etc.), light pink (maple, African mahogany, squash willow, nyango, etc.) And purple-red to purple-black (such as black walnut (Kuraro walnut)), purple (such as purple heart and purple samurai (Mirecia)), and purple-brown (such as purfero (Kaviuna)). At least one of the three attributes of the colors of the material veneer used has a significant difference in at least one of hue, saturation and lightness. That is, there is a difference that the color difference can be clearly recognized visually. Then, a pattern can be formed by arranging these veneers in combination. As a combination of veneers, for example, a combination of light red veneer (hinoki), yellow veneer (pauamaleo), and brown veneer (duck) is similar in wood quality but different in hue. Combination of plates; dark brown veneer (Inuenju), yellow-brown veneer (zelkova), or combination of light yellow-brown veneer (shinanoki), dark red-brown veneer (Asada), red-brown veneer (Yamazakura) ) Or a combination of light reddish-brown veneers (saperi) similar in woody but different in brightness; light gray-brown veneers (Sen), gray-white veneers (Onigurumi), white Although the woods are similar to each other, such as the combination of veneer veneer (Paumal fin), yellow veneer (pauamaleo), yellow-white veneer (china), and light yellow-brown veneer (linden), the saturation is similar Wood is similar to each other as well as combinations of different veneers Each of the three attributes of color is a different combination, for example, a combination of a pale pink veneer (maple), a yellow-white veneer (china), a brown veneer (duck), a dark brown veneer (inuenju), Various combinations such as a combination of a crimson veneer (hinoki) and a gray-white veneer (onigiri) can be given. As a preferred combination of material veneers, for example, as shown in the following examples, a combination of light-colored material veneers of two tree species having different hues or a light-colored material veneer of two or more tree species having different hues And a combination with a dark-colored material veneer. When you want to make a pattern stand out, use a material veneer that has a large difference in lightness and saturation (tone), such as a combination of a light-colored veneer and a dark-colored veneer. Is preferred. An object of the present invention is to produce a high-quality patterned veneer by combining the colors of the natural wood itself inherent in the veneer veneer as a material and forming a pattern based on the difference in color. However, it is also possible to form a desired pattern by using a cut material veneer dyed in a desired color, depending on the intended design and manufacturing convenience. It is very important to choose the veneer wood, i.e., those with similar physical properties of different veneers, such as hardness, flexibility, deformability, crackability, etc. . This makes it possible to adjust the degree of embossing of the veneer to the same degree without breaking the veneer in the embossing stage, so that the unevenness of the veneer can be more closely matched at the time of lamination, and as a result, the laminating and bonding stage Of the veneer is prevented. In addition, although not particularly necessary, it is preferable to select a material that approximates grain, since continuity can be obtained on the pattern surface and a natural finish can be obtained. Each of the two or more types of material veneers made of different prepared tree species has a thickness of about 0.2 to
Obtained by cutting to 0.5 mm. In addition to cutting wood flitches of all tree species to the same thickness and making veneers of the same thickness, the thickness of veneers may be changed depending on the tree type for adjustment of wood quality between veneers .

[0010]-About step b)-This step is obtained in the previous step using a pair of upper and lower press dies, each of which is designed in advance and has a concave and convex curved surface corresponding to a target pattern. Also, a step of inserting a suitable number of material veneers of a different tree type between the upper and lower surfaces and embossing the same to form an uneven curved surface form corresponding to the uneven surface on the material veneer. In the present invention, a pattern that is far from the pattern (grain pattern) recalled from natural wood is selected as the target pattern. It is also possible to consider and adopt a preferred pattern from market research and the like. For example, the color of a single veneer to be combined is used as the ground color, and there is a shape consisting of curves such as a circle, an ellipse, a gourd, or a polygon such as a triangle, a pentagon, a heart, a star, etc. Are scattered as motifs, or a pattern in which the motif of the pattern is striped, such as a curved striped pattern as shown in an embodiment to be described later (for example, concentric circles, concentric ellipses) Shape, concentric polygonal shape)
Various patterns such as a continuous pattern such as a staircase shape can be formed. In addition, the size of the pattern can be variously changed, such as a large pattern and a small pattern. In the present invention, the pattern on the plane formed as a result of cutting the laminated veneer after embossing in a direction crossing the lamination surface, for example, at an angle of 5 to 15 ° with respect to the lamination surface, is obtained. Therefore, the shape of the concave / convex curved surface of the mold surface of the press die in the stamping does not directly correspond to the desired pattern. Therefore, it is necessary that the shape of the concave and convex curved surface corresponding to the concave and convex curved surface formed on the material veneer be such that the planar pattern obtained after cutting becomes a desired pattern. As the press die, a pair of upper and lower press dies each having a concave and convex curved surface corresponding to a desired desired pattern formed on the upper die surface and the lower die surface are used. This type of press mold is, for example, a mold having a concave and convex curved surface corresponding to a design designed to be a finally obtained target pattern, such as a wooden mold, is poured with molten or liquid silicone resin, An uneven surface corresponding to the pattern portion is formed on the surface of a solidified silicon resin mold, and the obtained resin mold is used as a prototype (master model), and is an upper mold made of a gypsum mold or a synthetic resin (epoxy resin) mold or the like. The model of the lower mold and the model of the lower mold are manufactured, and then the casting is performed using each of the models, and the upper mold and the lower mold of the mold that form the uneven surface corresponding to each part of the pattern symmetrically on the mold surface. It is manufactured by making each. In addition, embossing of the material veneer, the material veneer, preferably the material veneer somewhat moistened with water by spraying, is placed between the above pair of upper and lower press dies, in a suitable number, for example, It is performed by a method of hot pressing at a temperature of about 150 ° C. for a time of about 20 seconds. The moisture of each veneer at the time of embossing is 10% to 15%, more preferably 12%.
% Is preferable. The number of material veneers used for one embossing varies depending on the type of wood used, eg, hardness, flexibility, etc. If the plate can be embossed without cracking, it can be performed even if two or more sheets are stacked. It is preferable to consider in advance the optimum number of sheets, under which the concave and convex curved surface of the mold corresponding to the pattern portion can be deeply embossed on the veneer.

Regarding step c) In this step, the required number of embossed veneer material veneers are combined in a desired order in accordance with the concave and convex curved surface corresponding to the target pattern, and the adhesive is applied. This is a step in which the sheets are laminated with being interposed between the veneers, and then placed between the upper and lower dies of the press die used in the previous step and pressed. The method of combining the veneers of different tree species to be laminated may be arbitrary.For example, different veneer veneers may be repeatedly stacked one by one in the same order, or two or more pieces of each veneer veneer may be appropriately laminated in a predetermined order. You can also. It is conceivable that a new pattern can be obtained by accidental combination by randomly stacking veneers of each tree species, but considering the uniformity of the pattern, it is preferable to laminate according to a certain rule . For example, in the case of using two kinds of veneers to be laminated, two kinds of veneers are alternately laminated one by one, or one kind of veneer is laminated one layer and the other kind of veneer is laminated three layers. In the case of lamination using three types of veneers, three veneers are laminated one by one in order, or five veneers of the first type are stacked, And vice versa by repeatedly stacking veneers of the third species and five layers of veneers of the third species. As the adhesive used at this stage, an adhesive curable at a low water content (for example, less than 4%) is more convenient. When the moisture content of the adhesive in use is quite high, the dimensional change of the embossed veneer becomes substantial and therefore does not match the pattern designed on the surface of the final pattern veneer Although a pattern portion appears, such a defect does not occur when an adhesive having a low water content is used. Also,
From the viewpoint of making use of the color of the cross section of the laminate of the material veneer, which constitutes the pattern of the veneer surface to be finally obtained, a more preferable adhesive is colorless, transparent, and does not easily yellow over time. Adhesive. As described above, a particularly preferred adhesive is a two-part curable urethane-based adhesive or a one-part moisture-curable urethane-based adhesive. The application of the adhesive is preferably performed using a sponge roll coater or a curtain flow coater. further,
The pressing of the laminated body of the stamped material veneer laminated in a predetermined order combination is performed, for example, at a pressure of 15 to 20 kg / c.
This is performed by cold-pressing under conditions of m ³ and time of 6 to 12 hours. Instead of cold pressing, hot pressing may be performed at an elevated appropriate temperature.

-Regarding step d)-In this step, the laminate obtained by the above-described pressing is cut in a direction crossing the lamination surface, and a veneer (thickness) having a mixed pattern of a heterogeneous species having a desired thickness is obtained. About 0.2-0.5mm) or
If desired, a step of making a plate (about 1 to about 10 cm thick). For the cutting in this case, a single-plate cutting machine such as a slicer, a half rotary or a rotary lace is used. Also, the cutting direction of the laminated body is arbitrary according to the designed design, as long as the direction crosses the laminated surface,
In a direction perpendicular to the lamination plane, or 5 to 15 °
It may be in a diagonal direction. In this way, a veneer for a decorative sheet having a mixed pattern of different tree species is obtained. The veneer as described above can provide a desired thickness and can provide a thicker plate material, unlike veneer and veneer cut out from natural wood. Therefore, the veneer for decorative sheet of the present invention has various uses as a decorative material on the surface of dwellings, furniture, vehicle interiors, household appliances and the like.

The veneer for decorative sheet manufactured according to the present invention can be used in the form of a veneer itself, but this veneer can be used as a fibrous sheet such as paper, paperboard, resin-impregnated paper and nonwoven fabric. By backing and sticking with a synthetic resin film, it can be used in the form of a decorative sheet. Examples of the paper used here include Japanese paper, Western paper (medium-grade paper, high-quality paper, etc.), paperboard (kraft paper), and resin-impregnated paper. As the nonwoven fabric, a nonwoven fabric using fiber such as rayon, nylon, polyester, acrylic, polyethylene, vinylon, cupra, polypropylene or the like as a raw material fiber is used. Further, as the synthetic resin film used here, polyethylene, polypropylene or other chain polyolefin or cyclic polyolefin resin,
A film made of a synthetic resin including a copolymer resin such as an acrylic resin, polyvinyl chloride, an ethylene acrylic acid copolymer (EAA), or an ionomer is used.

Further, the veneer for decorative sheet of the present invention can be used as a surface material of a wooden laminate, and is more preferably used as a surface material of the following two types of laminates. -Veneer of the present invention / paper or nonwoven fabric / synthetic resin film /
Examples of the laminated synthetic resin film of paper or nonwoven fabric include linear polyolefins such as polyethylene and polypropylene, cyclic polyolefin resins, acrylic resins, polyvinyl chloride, copolymer resins such as ethylene acrylic acid copolymer (EAA) and ionomers. A film made of the synthetic resin is used, and the same paper or nonwoven fabric as described above is used. -Veneer of the present invention / paper or nonwoven fabric / synthetic resin film /
Metal foil / synthetic resin film / laminated body of paper or nonwoven fabric As metal foil, iron foil, aluminum foil, stainless steel foil is used, and as paper or nonwoven fabric and synthetic resin film, those similar to the above are used. Used.

Further, the veneer for decorative sheet and the decorative sheet of the present invention can be applied to, for example, a base material as described below to finish various wood products. -Bendable thick fibrous sheet This fibrous sheet is a thick flexible flexible material,
In particular, those having a high cushioning property are suitable. As a material of the sheet, for example, paper, Japanese paper, paperboard, woven fabric, and nonwoven fabric can be used. -Foamed resin sheet The foamed resin sheet includes foamed polyurethane or foamed polystyrene, and particularly preferably foamed polystyrene. -Wood plywood As the wood plywood, a three-layer plywood, a five-layer plywood, or the like which has been used more frequently than before can be used. -Medium density fiber board The medium fiber board is not particularly limited in its thickness, fiber type, confluency, and the like. -Inorganic board As the inorganic board, gypsum board, calcium silicate board, calcium silicate board mixed with fiber, fiber mixed gypsum board, glass fiber mixed inorganic / phenol resin foam board or glass fiber / aluminum hydroxide mixed phenol resin foam board, and foam Concrete etc. can also be used. -Glass plate A glass plate is more preferable because its surface is flat. -Synthetic resin plate As the synthetic resin plate, for example, melamine resin plate, ABS
A resin plate, a polyurethane resin plate, an epoxy resin plate, an acrylic resin plate, or the like can be used, and a plate in which an epoxy resin or the like is impregnated in wood or the like can also be used.

The veneer and veneer sheet for decorative sheet of the present invention thus produced, as well as the wooden laminate and the wooden product using them, are novel decorative materials, such as ceilings for wooden buildings, concrete buildings, etc. As interior materials to be adhered to inner walls and floor surfaces, as well as furniture, furniture, furniture,
As a surface covering material for home electric appliances (cabinet etc.) and office supplies, as well as various vehicles (automobiles, railway vehicles, ships, aircraft, etc.) such as automobile instrument panels
It can be advantageously used as an interior material of a musical instrument or as a surface material of a musical instrument. In particular, the veneer or veneer sheet with a new pattern of the present invention is a high-quality natural wood, but a new pattern that is hardly seen in products made from conventional wood is designed and displayed on the surface. Is possible. As a result, new products will be offered to the market, thereby stimulating new demand. In addition, by designing patterns in accordance with the tastes and trends of consumers, we will provide products that sell well in the market It is also possible to respond to customization of a pattern or the like according to personal preference. Therefore, the veneer or decorative sheet for a decorative sheet of the present invention is a commercially very advantageous product.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be further clarified by describing some examples which are considered to be the best embodiments of the present invention.

EXAMPLE 1 This example uses three types of wood consisting of cinnamon (yellowish white), maple (light pink), and ash (brown) of different colors, as shown in FIG. This is an example of making a pattern veneer 1 having a color curve stripe pattern. The details of the manufacturing method are as follows.

-Raw material-As a raw material for a veneer material, wood flitch from three tree species, Chinese china, maple and ash, was prepared.

-Press Die- An upper die shown in FIG. 2 and a lower die shown in FIG. 3 were prepared as press dies used for stamping a material veneer and subsequent pressing. As shown in FIG. 4, an uneven curved surface 5 corresponding to the designed curved stripe pattern in FIG. 1 is formed on the mold surface 4 of the upper mold 3, and the mold surface of the lower mold 6 as shown in FIG. 7
Similarly, an uneven curved surface 8 corresponding to the designed curved stripe pattern is formed. The uneven curved surface 5 and the uneven curved surface 8 are formed symmetrically so as to fit each other.

-Step a)-Wood flitches of three tree species (tree species: Chinese, maple, and ash) are cut to an appropriate thickness of 0.15 to 0.3 mm, respectively, and a large number of material veneers (china) are cut. 9a, a material veneer (maple) 9b and a material veneer (duck) 9c were prepared.

Step b) Using the pair of upper and lower press dies 3 and 6 shown in FIG. 2 to FIG. 5, as shown in FIG. Each of the material veneers 9 is placed between the upper mold 3 and the lower mold 6 one by one,
Each sheet was stamped by hot pressing at a temperature of about 20 ° C. for about 20 seconds. As a result of this series of embossing, the shapes of the concave and convex curved surfaces 5 and 8 on the mold surfaces 4 and 7 corresponding to the curved stripes are formed on the surfaces of the material veneers 9 of the three tree species, respectively. This is used for each material veneer 9a of three tree species,
By repeating for each of 9b and 9c, an uneven curved surface form was similarly formed for each of the single veneers 9a, 9b and 9c of each of the three tree species.

-Step c)-As shown in Fig. 7, the material veneers 9a, 9b and 9c of the three tree species embossed in the above step are repeatedly stacked one by one in this order, and the unevenness is formed. A two-component curable urethane-based adhesive (water content: about 2%) 10 is applied to each of the veneers 9a and 9 so that the curved surfaces 5 and 8 match and is colorless and transparent and hardly yellows.
b and 9c. A sponge roll coater was used for applying the adhesive 10 used. Next, the laminated single plates 9a, 9b and 9c
Was placed between the upper die 3 and the lower die 6 of the press die used in the previous stage, and then cold-pressed under the conditions of a pressure of 15 to 20 kg / cm ³ and a time of 6 to 12 hours.

-Step d)-A slicer (shown in the figure) is attached to the laminate 13 obtained by pressing in the previous step in a direction perpendicular to the lamination surface (the direction of arrow P in the figure) as shown in FIG. No)
A veneer having a desired thickness (about 0.2 to 0.5 mm in thickness) was prepared.

FIG. 9 shows a pattern veneer made through the above steps a) to d). From FIG. 9, it can be seen that the manufactured pattern veneer has beautiful three-color curved stripes composed of Chinese china 2 a, maple 2 b, and ash 2 c having colors corresponding to the respective raw woods.

Embodiment 2 This embodiment uses two kinds of woods consisting of cinnamon (yellowish white) and maple (light pink) of different colors to obtain a two-color curve stripe pattern as shown in FIG. This is an example of making a pattern veneer 11 having the following. The details of the manufacturing method are as follows.

-Raw Materials- Two kinds of wood flitches, Chinese and maple, were prepared as raw materials for raw veneers.

In steps a) and c), the raw materials of the veneer used in the steps are two kinds of wood flitches, Chinese and maple. In step c), the two veneer veneers are repeatedly and alternately stacked one by one. Other than the procedure, using the press dies 3 and 6 used in Example 1, the procedure and conditions were the same as in Example 1, and finally, the veneer 11 having the pattern shown in FIG.
made. From this figure, the veneer veneer 11 of the produced pattern is
It can be seen that the material has a beautiful two-color curve stripe pattern composed of the china 12a and the maple 12b having colors corresponding to the respective raw woods.

[0028]

As can be seen from the above description, a new pattern is designed in advance, and a natural wood material veneer having a difference in three attributes of color is embossed using a corresponding press die. After lamination and bonding in combination, the method for producing a veneer veneer sheet of the present invention to obtain a veneer sheet by cutting in a direction crossing the lamination surface, which was not the case using conventional natural wood as a raw material, An effect is obtained in that a veneer sheet or decorative sheet having a design giving a novel impression to the viewer and having a high-quality feel can be easily and reliably provided in a desired thickness according to the application. In addition, the veneer or veneer sheet for decorative sheet obtained according to the production method of the present invention may have a variety of wood products and surface decorative materials designed according to consumer's taste and fashion as various surface decorative materials. They are very useful commercially because they are possible and can also be made to order.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a veneer having a three-color curved stripe pattern manufactured by the method of Example 1 of the present invention.

FIG. 2 is a photograph of an upper die of a press die used for embossing a material veneer in the method of Example 1.

FIG. 3 is a photograph of a lower die of a press die used for embossing a material veneer in the method of Example 1.

FIG. 4 is a front view showing an upper die of the press die shown in FIG. 3;

FIG. 5 is a front view showing a lower die of the press die shown in FIG. 3;

FIG. 6 is a diagram illustrating a step of embossing the material veneer for each sheet in the method of the first embodiment.

FIG. 7 is a diagram illustrating a step of pressing the stamped laminate of the material veneer via an adhesive in the method of the first embodiment.

FIG. 8 is a diagram showing a step of manufacturing a veneer by cutting the pressed laminate in the P direction in the method of the first embodiment.

FIG. 9 is a photograph of the surface of a single plate having a three-color curved stripe pattern manufactured according to the method of Example 1.

FIG. 10 is a diagram schematically showing a veneer having a two-color curved stripe pattern manufactured by the method of the second embodiment of the present invention.

FIG. 11 is a photograph of the surface of a veneer having a two-color curved stripe pattern manufactured according to the method of Example 2.

[Explanation of symbols]

 1 Single veneer having a three-color curved stripe pattern 2a Chinese pattern 2b Maple pattern 2c Tamo pattern 3 Upper die 6 Lower die 4, 7 Mold surface 5, 8 Concavo-convex surface corresponding to curved stripe pattern 9, 9a , 9b, 9c Material veneer 10 Adhesive 11 Veneer having two-color curved stripe pattern 12a Chinese pattern 12b Maple pattern 13 Laminate

Continued on the front page F-term (reference) 2B002 AA01 AA03 AA04 AB03 AC01 AC07 AC12 BA01 BA10 BA17 BB06 DA04 DA06 2B242 BA06 BA11 BA19 BA35 4F100 AK01D AK51G AP01A AP01B AP01C AP10A AP10B AP10C BA04 BA07 BA10A DG01 DD01 DDB DDB DD DD DD 001 EJ392 EJ82D GB08 GB33 GB81 HB00A HB00B HB00C HB15A HB15B HB15C HB21A HB21B HB21C

Claims (9)

[Claims] 1. The method according to claim 1, comprising the following steps:
Manufacturing method of veneer for decorative sheet. a) two or more kinds of material veneers composed of different tree species, in which there is a large difference between the three attributes of the colors, but the woody materials are similar, but the required number of sheets are prepared; b) By using a pair of upper and lower press dies on which a mold surface of an uneven curved surface corresponding to the pattern to be formed is formed, the material veneer of the different tree species is inserted between the upper and lower mold surfaces and embossed, so that the uneven curved surface is formed. Forming corresponding concave and convex curved surface shapes on the veneer veneer; c) laminating the embossed veneer veneer material veneers in a predetermined order and interposing an adhesive between the veneers. And then placing it between the upper mold and the lower mold of the press mold and clamping, and d) cutting the laminate obtained by the compression in a direction crossing the lamination surface to obtain the desired The step of making a veneer having a thick mixed pattern of different tree species. 2. The production method according to claim 1, wherein as the material veneers made of different tree species, light-colored material veneers of two tree species having different hues are used in combination. 3. The method according to claim 1, wherein the material veneer made of different tree species is a combination of a light-colored material veneer of two or more tree species having different hues and a dark-colored material veneer.
The method according to claim 1. 4. A veneer for decorative sheet produced by the production method according to claim 1. 5. A veneer sheet for decorative sheet produced by the method according to claim 2. 6. A veneer sheet for decorative sheet produced by the method according to claim 3. 7. A veneer sheet for decorative sheet according to claim 4, and a fibrous sheet or a synthetic resin film selected from the group consisting of paper, paperboard, resin-impregnated paper and non-woven fabric bonded to the back surface of the veneer sheet. Consisting of a decorative sheet. 8. A veneer sheet for decorative sheet according to claim 5, and a fibrous sheet or synthetic resin film selected from the group consisting of paper, paperboard, resin-impregnated paper, and nonwoven fabric bonded to the back of the veneer. Consisting of a decorative sheet. 9. A veneer sheet for decorative sheet according to claim 6, and a fibrous sheet or a synthetic resin film selected from the group consisting of paper, paperboard, resin-impregnated paper, and non-woven fabric bonded to the back surface of the veneer sheet. Consisting of a decorative sheet.