JPS59123659A - Woody decorative board and its manufacture - 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 The present invention provides a wood decorative board that can be easily bent and used as panels for furniture and boxes, and Part 8! ! ! It is related to the manufacturing method.

As a wood decorative board, a polyvinyl chloride film Oυ with a decorative print back-lint is pasted onto the surface of a wood board (3) such as plywood, laminated board, or particle board using a vinyl acetate or epoxy adhesive. A device as shown in FIG. 1 is known. For this wood decorative board, see Figure 2 (
As shown in a), a V-shaped groove 0]) is cut in the wooden board (3), and then a V-shaped IJl is cut as shown in Fig. 2(b).
By bending the PVc film Ql at the part (11) and bonding the 7-shaped groove 01) together, the film is characterized in that the 90° bending process can be easily performed. However, in the case of the conventional wooden decorative board in which such PvC film 00 is attached to the wooden board (3) with adhesive, PVC film 00 has a low softening point of about 80°C, which is insufficient in heat resistance, and the surface hardness is low. There was also the problem that it was low and easily damaged. Furthermore, in the case of such a wood decorative board, the PVC film for the wood board (3) is 0.
α has low adhesion and peels easily, especially as shown in Figure 2 (b).
There is a problem in that the PVC film 00 peels off at the bent part of the board, resulting in a high probability of defects.Furthermore, when pasting the PVC film OCT on the wooden board (3), heat and pressure are applied; There is a problem in that the moisture in the wood board (3) is generated as steam, and the pressure of this steam tends to cause partial peeling of the PVC film θ(), which is called blistering. Furthermore, when applying pressure in this way, the unevenness on the surface of the wooden board (3) is
There is also the problem that unevenness appears on the surface of the PvC film 00, resulting in poor tactile sensation. In addition, in the case of such a wood decorative board, a vinyl acetate-based or Evo+Si-based adhesive is applied to the wood board (3), and a PvC film 0 (a wet method in which the adhesive is applied by applying force) is applied. 1 method, the moisture in the adhesive penetrates into the wooden board (3) and causes the wooden board (3
) also had the problem that warping was likely to occur.

The present invention has been made in view of the above points, and its primary purpose is to provide a wood decorative board that has excellent heat resistance and surface hardness, and has the aim of providing a wood decorative board that has excellent heat resistance and surface hardness. Excellent stripping 1'! [The second purpose is to provide a wood decorative board that can prevent the occurrence of f defects,
The third LI goal is to provide a wood decorative board that is free from the possibility of blistering on the film and does not cause the surface irregularities of the wood board to appear as a tactile sensation. The fourth objective is to provide a wood decorative board that can be manufactured without any problems.

The present invention will be explained in detail below. First, the first invention of the present invention (
Claim 1) is a transparent polyester film (1) bonded via a dry laminating adhesive.
and the decorative film (2) with the decorative print applied, are placed on the wooden board (3) so that the polyester film (1) is on the front side.
).The polyester film (1) is a film of polyethylene terephthalate.
As the film (2), a polyvinyl chloride or polypropylene film with a JS-printed wood grain pattern etc. on the back side can be used. This polyester film (1) is formed to be colorless or colored and transparent. ) and the decorative film (2) are bonded together using a dry laminating adhesive, and each film (1)'(2) is preferably subjected to a corona discharge treatment. ] As shown in Fig. 5, the discharge treatment is carried out at ujJ between the Zettai I'ichi Isha 09 connected to the small transformer (A) of the corona discharge treatment machine and the grounded dielectric roll o0. A high frequency and high voltage is applied to dielectrically break down the air to generate a COD discharge, and the films (1) and (2) are passed through this corona radiation Ia.
The surfaces of 1) and (2) are treated with 1'g of corona radiation. By subjecting the surfaces of films (1) and (2) to corona discharge treatment in this way, films (+) 1 (2
) can be polarized and activated to improve adhesive performance. A dry laminating adhesive is applied to either (or both) of the polyester film (1) and the decorative film (2) that have been treated with corona discharge in this way, and both films (1) + are bonded together through this adhesive.
2) are overlapped and bonded together by passing them between rolls. Here, as an adhesive for dry lamination,
In terms of properties such as heat resistance, it is preferable to use a notane-based one, such as A-36, which is commercially available from Take 1] 1 Kuwa Akira Kogyo 4].
7/A-7, A, -871/A-3, A, -375
7A, -8, A-31o/A, -a (all product numbers)
etc. can be used. However, plywood, laminated board,
Apply an adhesive such as vinyl acetate or KBO+C to a wooden board (3) such as Particle Hoard, and attach both of the above films (3).
), j (Lay the polyester film (1) on the wooden board (3) with the polyester film (1) on the front side and heat roll u2 as shown in Figure 4). A decorative film (2) is pasted on the surface of a wooden board (3), and the surface is covered with a clear polyester film (
A wood decorative board coated with 1) can be obtained.

When doing this, press the film (1) (2+) onto the surface of the wooden board (3) Lf.

Since this pressure is applied for a long time, the unevenness on the surface of the wooden board (3) tends to appear on the surface of the polyester film (1), which is not preferable. Such a wood decorative board is shown in Figure 2 (al.
The bending process can be easily performed in the same manner as in (b).

As mentioned above, in the wood decorative board according to the first aspect of the present invention, since the polyester film is adhered to the front side of the decorative film, the polyester film has excellent heat resistance (softening temperature is around 240°C). It is possible to improve the heat resistance of the surface, and the excellent high hardness of the polyester film makes it difficult to scratch the surface.

Next, the second and third aspects of the present invention will be explained. The second invention (described in claim 2) is a transparent polyester film (1) bonded via a dry laminating adhesive and a decorative film (2) on which a decorative print has been applied.
The polyester film ( ) is attached to the surface of the wooden board (3) with the thermoplastic resin enclosing film (4) interposed through the heat-sealing layer (5). The third invention (described in claim 4) (A) A decorative wood panel with a transparent polyester film (]) and a decorative print applied via a dry laminating adhesive. The film (2) and the thermoplastic resin adhesive film (4) are combined in this +111'+ layer 4. By heating and sweating the surface of the plate (3), thermoplastic 4i: (i Il
Wooden board (3) by heat fusion of r-contact film)
The present invention relates to a method for producing a wood decorative board, characterized in that a polyester film (1) and a decorative film (2) are attached to the polyester film (1) and a decorative film (2).
) and the decorative film (2) are subjected to corona discharge treatment in the same manner as described above and bonded together using a dry laminating adhesive, and then the thermoplastic resin adhesive film (4) is bonded to the decorative film (2) using a dry laminating adhesive. 2), a composite film (6) having a three-layer structure of a polyester film (1), a decorative film (2), and an adhesive film (4) is obtained. At this time, film (1)
, (2), and (4) were each subjected to corona discharge treatment, and one or both of the facing layers of each film (1), (2), and (4) were coated with trilaminate adhesive. Film (1), +2+, (
A composite film (6) can be obtained by stacking 4) and passing it between rolls. Here, as the thermoplastic resin grafting film (4), the polyester film (1
) It is preferable to use a polyolefin having a lower melting temperature and copolymerizing a polar additive to improve adhesion. That is, this product is made by copolymerizing a polyolefin such as polyolefin or polydichlorohylene with a 7-mer such as maleic acid, fumaric acid, acrylic acid, methacrylic acid, etc. having a carboxyl group as a polar group, such as kraft. (ethylene/acrylic acid), EMA
(ethylene/methacrylic acid), EEA, (ethylene/ethyl acrylate).

A representative example of this is IZZUMA (ethylene/acrylate). This is Mitsubishi Yuka's "
Adhesive polyolefin resins such as "T-Dick", Mitsui Petrochemical's "Atomer", Sumitomo Chemical's "Bosido First", Toa Fuel Chemical's "rHA series" and Exxon's "Dexon" are available as adhesive polyolefin resins, which can be used to form films. It can be used as

However, when attaching the composite film (6) to the surface of the wooden board (3), the polyester film (1)
The composite film (6) is placed on the wooden board (3) so that the front side faces up, and the film is passed between the heating holes θ2α as shown in Fig. 7, so that the melting temperature of the adhesive film (4) is lowered. Melting of polyester film (1) at Hatate temperature
The adhesive film (4) is fused to the wooden board (3) by heating and applying pressure at a temperature lower than that of the 'li temperature. In this way, as shown in Figure 6,
A heat-sealing layer of adhesive film (4) is applied to the surface of the wooden board (3)
5) A wood decorative board is obtained on which a polyester film (1) and a decorative film (2) are attached via a film.

In this case as well, for the same reason as mentioned above, it is preferable to use hot roll az Q2 instead of press forming.

As mentioned above, in the wood decorative board according to the second aspect of the present invention, since the polyester film is adhered to the front side of the decorative film, the heat resistance and surface hardness can be improved by the polyester film. Of course, since the polyester film and the decorative film are attached to the wooden board using the heat-sealing layer of the thermoplastic resin adhesive film, the adhesive strength is high and the decorative film can be attached to the wooden board, as shown in Figure 2. As shown in Figure 2, it is possible to reduce defects in which the decorative film peels off from the wooden board during bending. In addition, in the method for manufacturing a wood decorative board according to the third aspect of the present invention, a composite film composed of a polyester film, a decorative film, and a thermoplastic resin adhesive film is layered on a wood board, and this is heated and pressurized. Since the polyester film and decorative film are attached to the wooden board by heat-sealing thermoplastic resin adhesive film, there is no need to apply adhesive to the wooden board, and the polyester film can be attached to the wooden board using a dry method. A decorative film can be attached to the wooden board, and a wooden board can be manufactured without warping of the wooden board.

Next, the fourth invention and the fifth invention of the present invention will be explained. The fourth invention (described in claim 5) is a transparent polyester film (1), a decorative film (2) on which a decorative print has been applied, and paper (7) through a dry laminating adhesive.
are glued in this order, and the polyester film (
The above-mentioned 4-triester film (1) and decorative film (2) are placed on the surface of the wooden board (3) through a heat-sealing layer (ri) of the mature plastic reciprocal adhesive film (4) so that 1) is on the front side. and paper (7) are pasted together, and also relates to a 24”r 5 invention (Patent Claim Q!l).
I, Section 7, Item 7, I, layering a transparent polyester film (1), a decorative film (2) with a decorative print, and paper (7) in this order via a dry laminated adhesive. At the same time, a thermoplastic resin adhesive film (4) is laminated on the back side of the paper (7) by extrusion coating, and this composite film (8) is attached to the wooden board (3) with the polyester film (1) on the front side. By heating and pressurizing the surface of the thermoplastic resin adhesive film (4
) A method for producing a decorative wood board, characterized in that a polyester film (1), a decorative film (2), and a paper (7) can be bonded to a wood board (3) by heat fusing. First, corona discharge treatment was applied to L (Liester film (1), decorative film (2), and paper (3) respectively in the same manner as described above, and each of the opposite sides of film (1), (21) and paper (7) was treated with corona discharge in the same manner as described above. Films (1) and (2) with dry laminating adhesive applied to one or both sides.
) and paper (7) are stacked and passed between D-Rule to bond and integrate the films (1), (2+ and paper (7), and then thermoplastic resin is bonded to the back side of paper (3). The film (4) is extruded into a film shape from an extrusion molding machine and laminated by extrusion coating, which is applied in a softened state.
Composite film in which adhesive film (4) is integrated with adhesive (
8) is obtained. For paper (7) and -, thin paper, reinforced paper, or the like can be used. In addition, the adhesive film (4) is attached to the paper (7).
) by extrusion coating, it is best to apply an anchor coating agent to the paper (7) in advance. The anchor coating agent activates the surface of the paper (7) and forms an adhesive film (4) on the paper (7) when tainting the extruded surface layer of the adhesive film (4) on the paper (7).
The anchor coating agent has a high polarity, and this polarity makes the paper (
7) increases the polarity of the surface. As anchor coating agents, organic titanium-based anchor coating agents, polyethylene triphosphate-based anchor coating agents, and isocyanate-based anchor coating agents are provided, but isocyanate-based anchor coating agents are preferred due to their heat resistance.

In order to attach the composite film (8) to the surface of the wooden board (3), the polyester film (1
) on the wooden board (3) with the composite film (8) on the front side.
As shown in FIG. 9, heat roll 0202
The adhesive film (4) is heated and pressurized at a temperature higher than the melting temperature of the adhesive film (4) and lower than the melting temperature of the polyester film (1). ). In this way, a wooden board (
A wood decorative board is obtained in which paper (7), polyester film (1), and decorative film (2) are attached to the surface of 3) through a heat-sealing layer (5) of an adhesive film (4). . Here, since paper (7) is laminated to the composite film (8), the unevenness on the surface of the wooden board (3) will be absorbed by this paper (7), so as shown in Figure 9. Even if the surface of the polyester film (1) is applied to the wooden board (3) by hot pressing with a hot plate OJ as shown in Fig. 10, without using a hot roll O''2, the surface of the polyester film (1) It is possible to obtain a smooth wood decorative board.In addition, the wood board (3) is produced by heating when the composite film (8) is attached to the wood board (3).
The water vapor from the paper (7) will be absorbed by the paper (7), and it is possible to prevent blisters from occurring due to the pressure of the water vapor.

As mentioned above, the wood decorative board according to the fourth aspect of the present invention has a polyester film adhered to the front side of the decorative film, so the polyester film can improve heat resistance and surface hardness, and the polyester film and the polyester film can improve heat resistance and surface hardness. Since the decorative film and paper are attached to the wooden board using the heat-sealing layer of the thermoplastic resin adhesive film, the adhesive strength is high and the decorative film can be attached to the wooden board. Since the decorative film and polyester film are pasted through -C(A),
The unevenness on the surface of the wooden board is absorbed by the paper, making it possible to finish the surface smoothly, and the paper absorbs the water vapor generated from the wooden board during heat-pressure molding, preventing blisters from forming on the decorative film due to the pressure of the water vapor. It is possible. Further, in the method for manufacturing a decorative wooden board according to the fifth aspect of the present invention, a composite film composed of a polyester film, a decorative film, paper, and a thermoplastic resin adhesive film is layered on a wooden board, and this is heated and pressed. As a result, we were able to attach polyester film, decorative film, and paper to a wooden board by heat-sealing thermoplastic resin adhesive film.
Polyester film, decorative film, and paper can be attached to a wooden board using a dry method without the need to apply adhesive to the wooden board, and the wood decorative film can be applied without warping the wood board. It is possible to manufacture plates.

The invention will now be illustrated by examples.

<Example 1> A transparent polyester film (biaxially oriented polyethylene terephthalate film: trade name Enzuret, manufactured by Unitika Co., Ltd.) with a thickness of 25 μm was heated to 40 μm using a discharge treatment machine.
A decorative film made of polyvinyl chloride film having a thickness of 70 μm and having a wood grain pattern printed on the back side was similarly subjected to a corona discharge treatment under the condition of dyne/cm.

Next, apply a heat-resistant polyester type urethane adhesive for dry lamination (trial chemical (preparation A-810/A-3) to one side of the polyester film at a coating amount of y/m', and jij L in the dryer under condition C,
It was dried. Thereafter, the polyester film was overlaid with a decorative film and passed through a roll to make them both juxtaposed.

In addition, the surface of the t2 plywood, which was formed by laminating five 2.4++t@thick veneers with urea melamine adhesive, was coated with an acetic acid emulsion adhesive at a coating amount of 150 y/yrt2, and then The decorative film and the polyester film were pasted on the surface of the plywood by overlaying the above adhesive film of the polyester film and the decorative film and passing it between rolls heated to 120°C at a feed rate of 10777/min. A wood decorative board was obtained (Example 2)
〉 A polyester film similar to Example 1, a decorative film, and an acid anhydride were combined in graph 1 to a 40μ thick adhesive film of 1'A adhesive high-pressure polyethylene (Bondra Earth 1-2 Sumitomo Chemical Co., Ltd. (manufactured by Japan) were each subjected to corona discharge treatment in the same manner as in Example 1.

Next, a dry laminating adhesive was applied to the polyester film and the adhesive film respectively in the same manner as in Example 1, and dried to form a polyester film.

By stacking a decorative film and an adhesive film and passing them through a roll, a composite film was obtained in which the three were adhesively integrated.

This composite film was layered on the surface of a plywood board similar to Example], and was placed between 1077Z heated rolls heated to 140°C.
By passing it through at a feed rate of /min, a wood decorative board with a composite film pasted on the surface of the plywood is rapidly passed through.

<Example 3> Polyester film similar to Example 1.

Decorative film and thickness 40μ (25?/m,' )
Each of the thin papers was subjected to corona discharge treatment in the same manner as in Example 1.

Next, Example 1 was applied to polyester film and tissue paper, respectively.
In the same manner as above, a dry laminating adhesive was applied and dried, and the polyester film, decorative film, and paper were layered and passed between rolls to bond and integrate the three. Further, on the back side of the paper, an isocyanate-based anchor coating agent of TD■ was applied at a coating amount of 7.9'/m''. Next, Bond First in Example 2 was applied to this side of the paper using an extrusion molding machine (conditions 280 The adhesive film immediately after extrusion into a 30 μm tube at a temperature of 30°C was then re-extruded.

The composite film thus obtained was layered on the surface of the same plywood as in Example 1, and by passing it between hot rolls heated to 150°C at a feed rate of 12771/Iηin, the composite film was applied to the surface of the plywood. I obtained a wood veneer that had been pasted.

<Comparative example> Acetic acid emulsion adhesive was applied to the surface of the same base plate as in Example 1 at a coating amount of 150 f; This was stacked on top of this and passed between rolls heated to 6 (10C) to obtain a wood decorative board with a polychlorinated nil film attached to the plywood.

Regarding the wooden decorative boards prepared in Examples 2.3 and 2.3, the peeling strength of the plywood and the film attached to the plywood was measured, and the surface hardness was also measured.

The results are shown in the table below.

As a result of the above table, the surface hardness of each example is fl
ip example 1<, and Example 2.3=F=4=
- It was confirmed that the peel strength was higher than that of the comparative example. Furthermore, regarding the heat resistance of the surface, Example 1.2
．． No. 8 passed the heat resistance test for concrete formwork panels specified by JAS, but the comparative example failed.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a conventional example, second examples (a) and (b) are cross-sectional views showing the bending process, Fig. 3 is a cross-sectional view of a wood decorative board according to the first invention of the present invention, and Fig. 4 is the same. 5 is a schematic diagram of a corona discharge treatment apparatus, FIG. 6 is a sectional view of a lignified cotton board in the second invention of the present invention, and FIG. 7 is a front view showing the manufacture of the same. FIG. 8 is a cross-sectional view of the wood decorative board according to the fourth invention, and FIGS. 9 and 10 are front views showing the manufacture of the same. (1) is a polyester film, (2) is a polyester film, (3) is a wood board, (4) is an adhesive film, (5)
is a heat-sealing layer, (6) is a bonded film, and (7) is a set: (
8) is a multi-unit film. Agent Patent Attorney Ishi 1) Chief 1st Cause Figure 2 Figure 4 Figure 5 1, 2 Figure 6 Figure 7

Claims (7)

[Claims] (1) A transparent polyester film and a decorative film with a decorative print attached using a dry laminating adhesive are attached to the surface of a wooden board using an adhesive so that the polyester film is on the front side. A wood decorative board characterized by: (2) A transparent polyester film and a decorative print bonded together using a dry laminating adhesive are hiL.
A decorative wood board characterized in that the decorative film is attached to the surface of the wood board via heat fusion of a thermoplastic resin adhesive film so that the polyester film is on the front side. (3) The decorative wooden board according to claim 2, wherein the thermoplastic resin adhesive film is formed of a highly adhesive resin obtained by copolymerizing polyolefin with polar T-summer. (4) A transparent polyester film and a decorative print are applied using a dry laminating adhesive.The decorative film and thermoplastic resin adhesive film are adhered in this order, and this composite film is attached with the polyester film on the front side. By heating and pressurizing the surface of the wooden board so that
A method for producing a wood decorative board, which is characterized in that it is hardened. (5) A transparent polyester film, a decorative film with a decorative print, and paper are adhered in this order using a dry laminating adhesive, and thermoplastic persimmon is placed on the surface of the wooden board so that the polyester film is on the front side. Greasy adhesive film heat li@! A wood decorative board characterized in that the polyester film, decorative film L1, and paper are pasted together via a layer IFa. (6) The wood decorative board according to claim 5, wherein the thermoplastic resin adhesive film is formed of a highly adhesive resin obtained by copolymerizing a polyolefin with a polar binder. (7) A transparent polyester film, a decorative film with a decorative print, and paper are bonded together in this order using a dry laminating adhesive, and a thermoplastic resin adhesive film is extruded and coated on the back side of the paper. y'), and by placing this composite film on the surface of the wooden board with the polyester film on the front side and applying heat and pressure, the polyester film and the decorative film are bonded to the wooden board by heat fusion of the thermoplastic resin adhesive film. Woodening 1 with 41a as pasting with paper
1. Method for manufacturing the top plate.