JPH05193049A - Plate glass/fancy veneer/plate glass laminate and manufacture thereof - Google Patents

Abstract

PURPOSE:To prevent the damage of plate glass and a fancy veneer and the generation, etc., of internal bubbles, and improve productivity by arranging two glass on both sides of the fancy veneer through specific adhesives respectively and laminating the glass and the fancy veneer and forming a laminate. CONSTITUTION:Two plate glass 2 is superposed and bonded on both sides of a fancy veneer 3 respectively by using nylon-12 group adhesive films 4 or liquefied acrylic emulsion adhesives. The laminate is press-molded according to a hot/cold flat press molding method, procedure, in which the laminate is thermocompressed first and cold-compressed as cracking pressure is left as it is kept at the same pressure. Accordingly, the cracking of plate glass, the damage of the fancy veneer, and the generation, etc., of internal bubbles can be prevented. The grain of the fancy veneer can be made distinct by the adhesion of the fancy veneer and plate glass in the laminate.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention is a completely new decorative material and is useful for furniture furniture and office supplies.
TECHNICAL FIELD The present invention relates to a laminated glass product and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, as a decorative material having transparent front and back surfaces, for example, a decorative material in which a veneer veneer 8 (decorative veneer) as shown in FIG. 5 is embedded inside a transparent sheet 7 made of acrylic resin, for example. 11 have been developed and used.

Further, the decorative material 11 is conventionally usually manufactured by a method in which a veneer 8 having a predetermined thickness is embedded in a molten resin in a shallow container and then the resin is solidified.

[0004]

However, this type of decorative material 11 generally lacks in gloss and luster on the front and back sides due to the properties of resin, and is easily deteriorated by light and heat, and has weather resistance and heat resistance. Etc. had the drawback that they were insufficient.

In the conventional manufacturing method, the veneer 8 is made up of the decorative material 1.
It is extremely difficult to make the decorative material 11 so as to be positioned completely parallel to the front and back surfaces 10a and 10b of No. 1, and in the manufacturing process thereof, when the veneer 8 is embedded, the air is easily entrapped in the molten resin, As a result, the resin was solidified while leaving the air bubbles 9 as it was, and a cosmetic material product having air bubble defects was often obtained (see FIG. 5).

Surface coating with a polyurethane resin or a polyester resin has been conventionally performed as a surface coating for a high-quality finish of a veneer-attached decorative board. This coating is performed by a method in which a melt of these resins is applied on the surface of the decorative plate and solidified, and a resin layer is laminated.

However, since the synthetic resin is lacking in gloss and luster due to its nature, the obtained decorative board was not able to clearly and visually recognize the grain of the veneer surface. Further, such a coating resin generally has a drawback that it is easily deteriorated by light and heat. Furthermore, it is generally difficult to form such a resin layer so as to form a smooth surface with a uniform thickness, and the difficulty becomes even greater, especially as the thickness of the resin layer increases. Becomes

[0008] On the other hand, among furniture furniture, a glass plate overlaid on a veneer on the surface of the furniture is conventionally known, and is manufactured and sold.

However, in such furniture furniture, the glass plate and the veneer are not in close contact with each other, and the grain of the veneer surface is not always clearly visible through the glass plate.

The present invention has been made in consideration of the above circumstances, and a first object thereof is to solve the above problems and to improve the grain of veneer as compared with a conventional similar decorative material. To provide a plate glass / projection plate / plate glass laminated product that can be seen more clearly and has a unique appearance and taste that conventional products do not have, and in which the projecting plate inside is arranged parallel to the front and back surfaces. It is in.

Another object of the present invention is to manufacture the above laminated product reliably and with high productivity without causing inconveniences such as breakage of plate glass or veneer and generation of internal bubbles. / It is providing the manufacturing method of a plate glass laminated product.

[0012]

DISCLOSURE OF THE INVENTION As a result of earnest research, the inventor of the present invention used two adhesive plates, ie, a nylon-12 adhesive film or a liquid acrylic emulsion adhesive, to plate two glass sheets. Adhere on both sides of
When this laminated body is press-molded according to the hot-cold flat press molding method, that is, the procedure of first hot-pressing and then cold-pressing while keeping the pressing pressure at the same pressure, cracks in the plate glass, and veneer It is possible to reliably manufacture sheet glass / veneer / plate glass laminated products without causing problems such as breakage and generation of internal bubbles, and this laminated product makes it possible to visually recognize the grain of the veneer plate by virtue of the close contact between the plate and glass. The present invention has been completed based on the finding that it can be manufactured and has a unique tone and taste not found in conventional products.

That is, the plate glass / projection plate / according to the present invention
The plate glass laminated product is characterized in that two plate glasses are arranged on both sides of a veneer via nylon-12 adhesive films or liquid acrylic emulsion adhesives, and are laminated and formed. .

Further, in the method for producing a plate glass / projection plate / plate glass laminated product according to the present invention, plate glass is laminated on both side surfaces of the projecting plate via a nylon-12 adhesive film or a liquid acrylic emulsion adhesive. Next, the laminate is placed in a hot press machine, heated and pressed, and then pressed under the same pressure until cooled to an appropriate temperature.

(Outline of the present invention) The plate glass used in the present invention may be any plate-shaped glass having a uniform thickness and the front surface and the back surface kept parallel to each other. A tempered glass plate and a polished glass plate can be applied to the present invention. A plate glass having a thickness of about 2 to 6 mm is suitable.

The plate glass may be treated with a suitable primer in advance before lamination in order to maintain good adhesion with an adhesive film or the like over time. It is more preferable that the primer has high transparency and good adhesion.

The veneer used in the present invention is a sheet material obtained by thinly cutting wood to a constant thickness of 0.1 to 0.6 mm, for example. Is also written.

According to the present invention, various natural woods such as Japanese cypress, oak, oak, keyaki, black persimmon, tochigi, yellowfin, shioji, tabuki, red dama, or teak, rosewood, mahogany, bird's eye maple. Veneer made of imported materials such as, walnut, zebra wood, tan, abodyra, dao, satin wood and brarian rose is used. The veneer used preferably has a water content of about 12% or less, and the thicker the plate, the lower the water content.

Further, the adhesive film or liquid adhesive used in the present invention is a transparent product having the ability to bring the veneer and the plate glass into close contact with each other by the press molding of the present invention (described below) in a plate glass / veneer / plate glass laminated product. Any material can be used. From such a viewpoint, a nylon-12 adhesive film is most suitable as the adhesive film, and an acrylic emulsion adhesive is suitable as the liquid adhesive.

When an adhesive other than these is used,
When a laminated body of two plate glasses and a projecting plate is press-molded, the plate glass is likely to be cracked or the projecting plate is damaged by the pressure of the pressing, and even if the cracking or the damage does not occur, the inside of the molded product is In many cases, there is a defect that bubbles remain. When nylon-12 adhesive films or liquid acrylic emulsion adhesives are used, the above defects do not occur or are very rare, if at all, as long as the compression procedure below is followed.

The thickness of the adhesive film should be changed depending on the kind of the veneer plate and the adhesive ability of the film, but in general, a film having a thickness of about 30 μ to about 160 μ is more preferable.

Further, the liquid adhesive is more preferably a relatively low viscosity and high fluidity, because uniform application becomes easier. Acrylic emulsion adhesives satisfy this condition, for example, a viscosity of about 2000 cp (35
℃) is used.

Further, the plate glass / projection plate / plate glass laminated product of the present invention can be surely obtained by a method of performing hot press molding while keeping the press pressure constant during molding, and then performing cold press molding, that is, a hot / cold flat press method. Can be manufactured.

That is, in the laminated product of the present invention, plate glass that has been preliminarily treated with a primer is preferably laminated on both side surfaces of the veneer plate via a nylon-12 adhesive film or a liquid acrylic emulsion adhesive. Then, the laminated body is placed in a hot press machine, preferably a cushion material is interposed between the laminated body and a hot plate of the press machine, and heat-pressed. Preferably at room temperature or slightly higher temperature (for example,
It is manufactured by a procedure of pressing until it is cooled to about 40-60 ° C.

The press molding conditions in the manufacturing method of the present invention are as follows:
It is necessary to appropriately change the thickness of each laminated material. For example, when a nylon-12 adhesive film is used, a laminated body of plate glass and a veneer is pressed at a pressing pressure of 3 to 10 kg / cm. ² , hot press molding under the conditions of a pressing temperature of 130 to 150 ° C. and a pressing time of 5 to 15 minutes, and then cooling while maintaining the same pressure, and at an appropriate temperature, preferably room temperature or a slightly higher temperature (for example, When the temperature falls to about 40 to 60 ° C.), the press pressure is released, and the laminated product must be taken out from the press machine to carry out laminated molding.

In this case, according to the above pressing conditions, a laminated product which is free from bubble defects and damage to the veneer and is stable over time can be obtained. However, when a low press pressure of less than 3 kg / cm ² is set, the veneer is Air removal from the plate glass becomes insufficient, and when the press pressure is set higher than 10 kg / cm ² , the pressure of the melt of the adhesive film causes breakage of the veneer and the like. Moreover, when the press temperature is set to a low temperature of 120 to 130 ° C., the plate glass and the adhesive film spontaneously peel off when a long time has passed after the molding.

When a plate glass / projection plate / plate glass laminated product is produced using a liquid acrylic emulsion adhesive, the pressing pressure is kept the same as above, and
It is advisable to carry out hot cold press molding by setting the press temperature to 120 to 130 ° C., for example.

Further, in the production method of the present invention, when the plate glass subjected to the primer treatment is applied, the adhesiveness between the plate glass and the veneer is dramatically improved, and the laminated product can sufficiently withstand long-term use. More preferable. When using a nylon-12-based adhesive film, the primer treatment is performed by a method in which a silane coupling agent is applied as a primer to the surface of the plate glass and dried.

As described above, since the quality (finishing feeling) of the laminated product of the present invention is influenced by the performance of the adhesive film, the conditions of press molding, etc., the transparency, melting point and penetration of the adhesive film into the veneer plate. It is possible to make the laminated product have a desired finish by selecting an appropriate type of the nylon-12 adhesive film in consideration of the above and adjusting the press molding conditions accordingly. Needed.

[0030]

The plate glass is remarkably excellent in transparency and light reflection characteristics as compared with acrylic resin and the like. The laminated product of the present invention is one in which such a plate glass and a veneer are brought into close contact with each other, and the grain of the veneer (grains, perforations, etc.) can be more clearly and clearly projected due to the optical properties of the glass. It gives the viewer a unique grain and color tone that is not found in conventional similar cosmetic materials.

Furthermore, in the present invention, since the nylon-12 adhesive film is used in addition to the plate glass and the veneer plate, that is, the material having a uniform thickness is used, the veneer plate can be formed on both the front surface and the back surface of the laminate. Each is parallel and thus a parallel laminate of constant thickness is obtained. Further, even when a liquid acrylic emulsion adhesive is used, the front and back surfaces of the laminated product and the veneer can be kept parallel by uniformly applying the adhesive.

Further, in the present invention, since the hot cold flat pressing method utilizing the above-mentioned adhesive film or the like is adopted, the plate glass is not cracked or the veneer is damaged by the pressing pressure during molding, Further, the air between the projecting plate and the plate glass can be completely removed to the outside air.

[0033]

Embodiments of the present invention will be described below with reference to the drawings. Example 1 The laminated product 1 of Example 1 shown in FIG.
2 (3 mm thick ordinary plate glass) is arranged on both sides of the projecting plate 3 via nylon-12 adhesive films 4 and 4 (thickness 120 μ), respectively, and is a laminated glass / projected plate / plate glass laminated product. . The veneer 3 was a bird's eye maple 0.25 mm thick single plate adjusted to a water content of 10%.

Next, the manufacturing process of the laminated product 1 will be described.
First, each plate glass 2 is washed to remove oil and dust on the surface, and subsequently each adhesive surface is coated with a silane-based primer and dried, and the adhesive films 4, 4 and Plate glass 2 and 2 are sequentially stacked and laminated,
Next, this laminated body was placed in a hot press machine (not shown), and as shown in FIG. 2, paper cushions 6 having a thickness of 2 mm were inserted between the laminated body and the hot plate of the press machine.
Then, heat compression was performed under the conditions of a press temperature of 145 ° C., a press pressure of 7 kg / cm ² and a press time of 10 minutes, and then, while maintaining the same press pressure, clamping was continued for a few minutes until cooled to 25 ° C., and then 25 ° C. The press pressure is released when the temperature falls to, and the molded laminate 1 is taken out thereafter.

The plate glass / veneer / plate glass laminate 1 thus obtained has no damaged part of the plate glass or the veneer and is difficult to finish, and the grain and joints of the bird's eye maple can be clearly seen, and the polyurethane resin or polyester It was a product with a deep tone that could not be obtained with a decorative material in which the surface of a veneer was coated with resin.

Moreover, the thickness of the laminate 1 was uniform, and the veneer 3 was kept parallel to the front and back surfaces of the laminate. Further, it was not possible to confirm the residual air bubbles in the laminated product 1. Example 2 The laminate 1 of Example 2 shown in FIG.
It is a plate glass / projection plate / plate glass laminate having the same layer structure as in Example 1 except that liquid acrylic emulsion adhesives 5 and 5 were applied instead of 4.

The manufacturing process of the laminated product 1 is as follows. First, a liquid acrylic emulsion adhesive (viscosity 2200 cp (30 ° C.), solid content 50%) 5, 5 was moistened to a surface of each washed glass plate 2 at a basis weight of 140 g / m ² (dry basis weight 70
(g / m ² ), spray coating is applied uniformly, and then two plate glasses 2 and 2 are laminated on both sides of the projecting plate 3, respectively, and then the laminated body is placed in a hot press machine and hot-pressed. Cold press molding was performed. Specifically, as shown in FIG. 4, 2 mm thick paper cushions 6, 6 were inserted between the laminate and the hot plate of the press, and the press temperature 12
Heat compression under the conditions of 5 ° C., pressing pressure 8 kg / cm ² and pressing time 8 minutes, and then continue to hold the same pressing pressure until it is cooled to 60 ° C., and then release the pressing pressure. Then, the molded laminated product 1 is taken out.

Similar to the laminated product of Example 1, the obtained plate glass / veneer / plate glass laminated product 1 had no damaged portions of the plate glass and the veneer, and the wood grain of Verzay maple was clearly visible. The finished product had a finish and aesthetics equivalent to those of the laminated product of No. 1.

Moreover, the projecting plate 3 is kept parallel to the front and back surfaces of the laminate 1, and the uniform application of the adhesive 5 can eliminate the generation of residual bubbles in the laminate 1.

[0040]

As described above, the plate glass / projection plate / plate glass laminate of the present invention can be manufactured by using a specific adhesive.
It is a completely new decorative material that is made by press-molding the plate glass and the veneer in close contact with each other.

Therefore, according to the present invention, the grain of the veneer can be visually recognized more clearly as compared with the conventional similar decorative material, and it has a unique tone and taste not found in the conventional products.
In addition, it is possible to obtain the effect of providing a plate glass / projection plate / plate glass laminated product in which the inner protruding plate is arranged in parallel to the front and back surfaces.

Furthermore, according to the production method of the present invention, the above-mentioned laminated product, which is an excellent new decorative material, can be reliably and highly produced without causing inconveniences such as breakage of plate glass or veneer and generation of internal bubbles. The effect that it can be manufactured by is obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a plate glass / projection plate / plate glass laminated product of Example 1 of the present invention.

FIG. 2 is a diagram showing a manufacturing process of the laminated product of FIG.

FIG. 3 is a cross-sectional view showing a plate glass / projection plate / plate glass laminated product of Example 2.

FIG. 4 is a diagram showing a manufacturing process of the laminated product of FIG.

FIG. 5 is a cross-sectional view showing a conventional decorative material.

[Explanation of symbols]

 1 Plate Glass / Veneer / Plate Glass Laminated Product 2 Plate Glass 3 Veneer 4 Nylon 12 Adhesive Film 5 Liquid Acrylic Emulsion Adhesive

Claims (2)

[Claims] 1. A plate glass / projection plate, characterized in that two plate glasses are arranged on both sides of a projecting plate through a nylon-12 adhesive film or a liquid acrylic emulsion adhesive, respectively, and are laminated and formed. / Plate glass laminated product. 2. A plate glass is laminated on both surfaces of the veneer via a nylon-12 adhesive film or a liquid acrylic emulsion adhesive, and the laminated body is placed in a hot press machine and heated. A method for producing a plate glass / projection plate / plate glass laminate, which comprises pressing and then pressing the same pressure until it is cooled to an appropriate temperature.