JPH08290542A - Thermosetting resin decorative board - Google Patents

Abstract

PURPOSE: To provide a thermosetting resin decorative board with satisfactory surface physical property and excellent decorative feature. CONSTITUTION: This thermosetting resin decorative board is composed of an impregnated sheet 55 consisting of so-called 'titanium paper' impregnated with diallylphthalate resin, a thermoadhesive film 54 consisting of coextruded film of polyester resin and acrylic resin, and an ultraviolet curable resin formed on the film, a metal vapor-evaporated layer 56 consisting of aluminum, an adhesive layer 53 of urethane resin, and a transparent heat-resistant film 51 consisting of polyethylene terephthalate resin with a pictorial pattern 52 printed on the lower surface, all laminated sequentially from the bottom. The thermosetting resin decorative board 5 is embossed at the time of thermal press molding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative plate made of a thermosetting resin, and more particularly to a thermosetting resin decorative plate having a high design and excellent surface properties.

[0002]

2. Description of the Related Art Thermosetting resin decorative boards used for various furniture surfaces and interior decoration building materials are desired to have excellent durability and decorativeness. Conventionally, thermosetting resin decorative boards have been mainly mixed with an opaque pigment such as titanium oxide in order to enhance the resin impregnation property and have the concealing property (conceal the base material color of the plywood or the like stuck to the lower surface). After making a decorative paper by providing a printed pattern on the paper, so-called titanium paper, which is then impregnated with a thermosetting resin such as melamine resin, diallyl phthalate resin and phenol resin, the base material, impregnated paper and overlay paper are laminated in this order. , And is integrally manufactured by thermocompression molding.

[0003]

The thermosetting resin decorative board prepared as described above has excellent surface physical properties such as heat resistance, chemical resistance, and stain resistance, but it has resin impregnation property. Since it uses a highly mixed porous paper, it has to print on a rough surface, and a sharp and beautiful pattern cannot be obtained. Further, in the case where the overlay paper impregnated with the thermosetting resin is used, it has a feeling of being blurred when viewed from the surface, and there is a problem in terms of decorativeness.

As one method for solving such a problem, the present applicant has previously disclosed in JP-A-60-122149 that the lower surface of a synthetic resin film is made of a synthetic resin having good adhesion to impregnated paper. We have proposed a technology in which a primer layer is formed, a pattern is printed on the lower surface of this primer layer, and it is superposed on impregnated paper and subjected to thermocompression molding. In this method, since the design is printed on the primer layer having a smooth surface, sharp printing can be performed and the sharpness of the design is improved. However, the influence of the rough surface of the impregnated paper at the time of thermocompression molding cannot be completely removed, resulting in an unclear image.

Further, in recent years, there is an increasing demand for a decorative plate having a metal vapor deposition layer and exhibiting a metallic tone. However, in the structure of the conventional thermosetting resin decorative plate described above, the metal vapor deposition layer is in direct contact with the impregnated paper, and the structure cannot be bonded by thermocompression molding.

The present invention has good surface physical properties, and
It is an object of the present invention to provide a thermosetting resin decorative board having an excellent design property, and further to provide a thermosetting resin decorative board exhibiting a metallic tone and enhancing a three-dimensional effect.

[0007]

In order to achieve the above object, the thermosetting resin decorative board of the present invention comprises an impregnated paper impregnated with thermosetting resin and a lower surface impregnated with impregnated paper in order from the lower layer. A heat-adhesive film having adhesiveness to a thermosetting resin and a transparent heat-resistant film having a pattern printed on the lower surface are laminated.

The thermosetting resin decorative plate having the above structure may be combined with the following structures to form a thermosetting resin decorative plate.

A metal vapor deposition layer is laminated between the heat adhesive film and the transparent heat resistant film.

The thermosetting resin impregnated in the impregnated paper is diallyl phthalate resin.

The transparent heat resistant film is a polyester film.

The heat-adhesive film is a coextrusion film of acrylic resin and polyester resin, and the acrylic resin is arranged on the lower surface and the polyester resin is arranged on the upper surface.

The upper surface of the transparent heat-resistant film has an uneven shape.

The upper surface of the heat-adhesive film is formed into a shape having irregularities.

The upper surface of the heat-adhesive film is made into a shape having irregularities by adhering an ionizing radiation curable resin on a layer made of polyester resin.

[0016]

[Function] In order from the lower layer, the impregnated paper impregnated with the thermosetting resin, the lower surface is a heat-adhesive film having adhesion to the thermosetting resin impregnated in the impregnated paper, and the pattern is printed on the lower surface. In a thermosetting resin decorative board in which a transparent heat-resistant film is laminated, the heat-adhesive film is interposed between the transparent heat-resistant film and the impregnated paper, so the pattern printed on the lower surface of the transparent heat-resistant film is There is no direct contact with the impregnated paper. The surface roughness of the impregnated paper is absorbed by the thickness of the heat-adhesive film, and the surface roughness of the impregnated paper does not affect the design. Also, the heat-adhesive film adheres to the impregnated paper.

When a metal vapor deposition layer is laminated between the heat-adhesive film and the transparent heat-resistant film, the light transmitted through the transparent heat-resistant film and incident is reflected by the vapor-deposited metal.

If the thermosetting resin impregnated in the impregnated paper is diallyl phthalate resin, since the diallyl phthalate resin has high bendability, the impregnated paper is easily bent, and as a result, the decorative board itself can be bent. .

When the transparent heat-resistant film is a polyester film, the decorative plate has a surface excellent in transparency, heat resistance, scratch resistance, water resistance, solvent resistance, and stain resistance.

When the heat-adhesive film is a co-extrusion film having an acrylic resin on the lower surface and a polyester resin on the upper surface, the heat-adhesive film can be formed by the good adhesion between the acrylic resin and the thermosetting resin in the impregnated paper. It is firmly fixed to the impregnated paper.

If the upper surface of the transparent heat-resistant film is formed to have irregularities, the refraction of light on the upper surface of the transparent heat-resistant film becomes uneven. The appearance of the picture differs depending on the arrangement of the unevenness and the viewing angle. Further, when the metal vapor deposition layer is laminated between the heat-adhesive film and the transparent heat-resistant film, the appearance of the metal surface also differs depending on the arrangement of the unevenness and the viewing angle.

When the upper surface of the heat-adhesive film is formed to have irregularities, when the metal is vapor-deposited on the upper surface of the heat-adhesive film to form the metal vapor deposition layer, the metal vapor deposition layer also has irregularities. The light reflected by the metal travels in the direction corresponding to the unevenness. When irregularities have no regularity, irregular reflection occurs, and when irregularities have regularity, reflected light proceeds according to the regularity.

Even when the upper surface of the heat-adhesive film is made to have an uneven shape by adhering an ionizing radiation-curable resin on a layer made of a polyester resin, a metal vapor deposition layer is formed on the upper surface of the heat-adhesive film. At times, the reflected light from the metal travels in a direction corresponding to the unevenness.

[0024]

EXAMPLE A first example of the thermosetting resin decorative board according to the present invention will be described with reference to FIG. FIG. 1 schematically shows a cross section of a thermosetting resin decorative board 1. The impregnated paper 15, the heat-adhesive film 14, the adhesive layer 13, and the transparent heat-resistant film 11 are laminated in this order from the lower layer, and the pattern 12 is printed on the lower surface of the transparent heat-resistant film 11.

The transparent heat-resistant film 11 which is the outermost layer of the thermosetting resin decorative board 1 is made of polyethylene terephthalate resin. Since the transparent heat-resistant film 11 functions as a protective layer for the decorative plate 1, the material is selected in consideration of heat resistance, scratch resistance, water resistance, solvent resistance, stain resistance, and the like. There is a need. In addition, the transparency is set according to the type and color of the design in consideration of decorativeness. A translucent resin may be used depending on the design. Resins that satisfy such conditions include polyesters such as polyethylene terephthalate, polycarbonate, and nylon.

The pattern 12 on the lower surface of the transparent heat-resistant film 11
Is printed with a normal ink for polyester resin. When the resin forming the transparent heat-resistant film 11 is made of another material, an ink suitable for it is used. The lower surface of the transparent heat-resistant film 11 is smooth, and the outline of the pattern 12 is sharp.

The impregnated paper 15 is titanium paper, kraft paper, thin paper or the like impregnated with a thermosetting resin. In this embodiment, titanium paper is impregnated with diallyl phthalate resin. Other thermosetting resins include melamine resin,
Although a phenol resin or the like can be used, the diallyl phthalate resin is particularly preferable because it has the following features.

The melamine resin and the phenol resin need to be once cooled during the thermocompression molding, but the diallyl phthalate resin can be treated while being hot. Therefore, continuous processing such as belt press molding is possible,
The processing efficiency is high, and the thermosetting resin decorative board can be formed as a continuous one. Further, the diallyl phthalate resin after curing has a high bendability, and the thermosetting resin decorative plate is also easy to bend and can be easily formed into a curved shape. Therefore, the secondary processing including the process of bending the end portion of the decorative plate is facilitated, and it can be used for a wide range of purposes.

The heat-adhesive film 14 is made of a coextruded film of polyester resin and acrylic resin, and has a polyester resin layer on the upper surface side and an acrylic resin layer on the lower surface side. The acrylic resin has good adhesiveness with the diallyl phthalate resin, and the heat adhesive film 14 is firmly adhered to the impregnated paper 15. Besides, as the heat-adhesive film 14,
It is preferable to use a polyester film with a heat-adhesive low molecular weight polyester resin coated on the underside, a resin sheet containing an epoxy group, or a heat-resistant film such as a polyester film or a polycarbonate film coated with a primer on the underside. it can.

The heat-adhesive film 14 is formed to a thickness of 15 μm or more. The unevenness of the surface of the impregnated paper 15 is absorbed by this thickness, and the upper surface of the heat-adhesive film 14 becomes smooth even after thermocompression molding, and the sharpness of the pattern 12 printed on the lower surface of the transparent heat-resistant film 11 is impaired. It will not be done.

The thermosetting resin decorative board 1 having the above-mentioned structure comprises the impregnated paper 15, the thermo-adhesive film 14, and the transparent heat-resistant film 11 having the two-component curing type urethane resin coated on the lower surface on which the pattern 12 is printed. It is dry-laminated, and heated and pressed by a belt press molding device for mirror surface processing to manufacture. The two-component curing type urethane resin becomes the adhesive layer 13. The standard values of temperature, pressure, and hot pressing time applied in this hot press molding are 135 to
It is 160 ° C, 7 to 15 kg / cm ² , and 5 to 10 minutes. Although a continuous decorative plate can be obtained by belt press molding, single-wafer press molding may be performed.

The second embodiment will be described. In the first embodiment, the upper surface of the transparent heat-resistant film 11, that is, the surface of the thermosetting resin decorative plate 1 is a smooth mirror surface by using the mirror-finishing molding plate, but in the present embodiment, it is for embossing. The molding plate is used to form irregularities on the surface of the thermosetting resin decorative plate. FIG. 2 schematically shows a cross section of the thermosetting resin decorative plate 2 whose surface is embossed. The transparent heat-resistant film 21, the pattern 22, the adhesive layer 23, the heat-adhesive film 24, and the impregnated paper 25 are all made of the same material as in the first embodiment.

Since the thermosetting resin decorative plate 2 has unevenness on the surface, the refraction of light is not uniform, and the appearance of the pattern 22 changes depending on the viewing angle. By forming the unevenness in accordance with the design 22, the texture of the design can be enhanced. For example, in the case where the design 22 is wood grain, a concave portion is provided at a portion corresponding to the wood grain conduit, so that a three-dimensional effect is generated and a feeling close to that of real wood can be given.
Similarly, leather wrinkles, grains, stones, etc. can also be expressed, resulting in a texture-rich pattern.

A third embodiment of the present invention will be described.
FIG. 3 schematically shows a cross section of the thermosetting resin decorative plate 3. The thermosetting resin decorative plate 3 of the present embodiment is a transparent heat-resistant film having an impregnated paper 35, a thermal adhesive film 34, a metal vapor deposition layer 36, an adhesive layer 33, and a pattern 32 printed on the lower surface thereof in order from the bottom layer. 31 are stacked.

Similar to the first embodiment, the transparent heat-resistant film 31 is a polyethylene terephthalate film, the adhesive layer 33 is a polyurethane resin, the heat-adhesive film 34 is a coextrusion film of polyester resin and acrylic resin,
The impregnated paper 35 is made of titanium paper impregnated with diallyl phthalate resin.

A metal vapor deposition layer 36 formed by vapor deposition of aluminum is provided on the upper surface of the heat adhesive film 34. The vapor deposition of aluminum is performed by melting and evaporating aluminum under a high vacuum of 10 ⁻⁴ Torr or less and exposing the upper surface of the heat adhesive film 34 to aluminum vapor. The metal forming the metal vapor deposition layer 36 is not limited to aluminum, and any metal capable of vapor deposition such as tin, zinc, or copper may be used. A metal may be selected according to the difficulty of the vapor deposition process and the desired gloss.

The thermosetting resin decorative plate 3 having the above-mentioned structure has the heat-adhesive film 34 on which the metal vapor deposition layer 36 is formed in advance.
And a transparent heat-resistant film 31 coated with a two-component curing type urethane resin on the surface on which the pattern 32 is printed, the metal vapor deposition layer 3
After dry-laminating so that the 6 side and the 32 side of the pattern face each other, the impregnated paper 3 with the heat adhesive film 34 side as the lower side
It is produced by hot pressing while sandwiching it on a mirror-finishing molding plate in a state of being placed on top of No. 5. With such a structure, the adhesive layer 33 exists between the pattern 32 and the metal vapor deposition layer 36, so that the pattern 32 feels as if it is lifted up from the metallic glossy surface, and has a depth and a three-dimensional effect. It will be.

The entire surface may be further printed on the lower surface of the transparent heat-resistant film 31 on which the pattern 32 is printed to form a light-transmitting colored layer so as to change the gloss to be expressed. Even if the evaporated metal is aluminum, for example,
By making the colored layer yellow or brown, gold luster or copper luster can be expressed. In such a configuration, inexpensive aluminum can be used instead of expensive metal such as gold, so that cost reduction can be achieved. Alternatively, the entire surface may be directly printed on the lower surface of the transparent heat-resistant film 31 to form a light-transmitting colored layer, and the pattern 32 may be printed on the colored layer.

In the thermosetting resin decorative plate 3, it is possible to express metallic tones of various shades by appropriately selecting the type of metal forming the metal vapor deposition layer 36 and the pattern obtained by printing. Further, since the metal vapor deposition layer 36 becomes the background of the pattern 32, the texture of the pattern 32 is set to the metal vapor deposition layer 3
It can be changed by 6. Even if the patterns have the same pattern and the same color, different impressions are given when the background has, for example, aluminum luster and copper luster. As described above, the combination of the pattern 32 and the metal vapor deposition layer 36 widens the range of expression, and the thermosetting resin decorative plate 3 has a high design.

Here, in the present embodiment, the metal vapor deposition layer 36 is
Although the description has been given on the assumption that it is provided on the upper surface of the heat-adhesive film 34, the transparent heat-resistant film 3 having the pattern 32 printed thereon
It is also possible to apply metal vapor deposition to the side of the pattern 32 of 1. However, in the case of such a configuration, the surface of the printed pattern 32 is not smooth and the metallic luster may be inferior, and the adhesive layer 33 is not provided between the pattern 32 and the metal vapor deposition layer 36. , There is a possibility that the depth and stereoscopic effect may not be obtained.

A fourth embodiment of the present invention will be described.
FIG. 4 schematically shows a cross section of the thermosetting resin decorative plate 4. The thermosetting resin decorative plate 4 of the present embodiment is a transparent heat-resistant film having an impregnated paper 45, a thermal adhesive film 44, a metal vapor deposition layer 46, an adhesive layer 43, and a pattern 42 printed on the lower surface thereof in order from the bottom layer. 41 are stacked.

As in the first embodiment, the transparent heat-resistant film 41 is a polyethylene terephthalate film, the adhesive layer 43 is a polyurethane resin, the heat-adhesive film 44 is a coextruded film of polyester resin and acrylic resin,
The impregnated paper 45 is made of titanium paper impregnated with diallyl phthalate resin.

Concavities and convexities are formed on the upper surface of the heat adhesive film 44 by embossing. A metal vapor deposition layer 46 formed by vapor deposition of aluminum on this uneven surface
Is provided.

In the thermosetting resin decorative plate 4 having the above-mentioned structure, the heat-adhesive film 44 on which the metal vapor deposition layer 46 has been embossed in advance is placed on the impregnated paper 45, and the pattern 42 is printed. It is manufactured by dry laminating a transparent heat-resistant film 41 having a two-component curing type urethane resin coated on its surface, sandwiching it between molding plates for mirror surface processing, and performing thermocompression molding.

In the thermosetting resin decorative plate 4, it is possible to express various shades of metal by appropriately selecting the type of metal forming the metal vapor deposition layer 46. Further, since the metal vapor deposition layer 46 becomes the background of the pattern 42, the texture of the pattern 42 can be changed by the metal vapor deposition layer 46. In this way, the combination of the pattern 42 and the metal vapor deposition layer 46 expands the range of expression, and the thermosetting resin decorative plate 4 has a high design.

Further, since the upper surface of the metal vapor deposition layer 46 has a shape conforming to the unevenness of the upper surface of the thermal adhesive film 44, the traveling direction of the reflected light by the metal vapor deposition layer 46 is the same as that of the upper surface of the thermal adhesive film 44. Determined by unevenness. When the irregularities are irregular, light is diffusely reflected and a uniform metallic tone is obtained regardless of the angle at which the thermosetting resin decorative plate 4 is viewed. When the irregularities on the upper surface of the heat-adhesive film 44 are formed with orientation, the amount of reflected light changes depending on the viewing angle, so that the depth of the pattern 42 is enhanced. In particular, when the design 42 is wood grain, it is possible to express the sense of tension that wood has. The thermosetting resin decorative plate 4 is also excellent in terms of expression quality.

FIG. 5 schematically shows a sectional view of the thermosetting resin decorative plate 5 of the fifth embodiment. Thermosetting resin decorative board 5
Is impregnated paper 55, thermal adhesive film 54, metal vapor deposition layer 5
6, the adhesive layer 53, and the transparent heat resistant film 51 are laminated in this order. A pattern 52 is printed on the lower surface of the transparent heat-resistant film 51, and ultraviolet curable resin 57 is attached to the upper surface of the heat-adhesive film 54 to form fine irregularities.

Also in this embodiment, the transparent heat resistant film 51 is a polyethylene terephthalate film, the adhesive layer 53 is a polyurethane resin, the heat adhesive film 54 is a coextrusion film of polyester resin and acrylic resin, and the impregnated paper 55 is a diallyl phthalate resin. Although it is made of titanium paper impregnated with, each layer may use other resins exemplified in the first embodiment.

A method for forming irregularities on the upper surface of the heat-adhesive film 54 is schematically shown in FIG. In the figure, 61 is an uneven roller having an uneven pattern on its outer periphery, 62 is a pressing roller, and 63 is a conveying roller, which are indicated by arrows a, b, respectively.
Rotate in c direction. Reference numeral 64 denotes an ultraviolet light source that irradiates the uneven roller 61 with ultraviolet rays. Thermal adhesive film 54
From the concave-convex roller 61 and the pressing roller 62 to the concave-convex roller 61 and the conveying roller 63.
In the state of being in close contact with the convex portion on the outer periphery of 1, the movement is in the direction of arrow A.

Reference numeral 65 is an ultraviolet curable resin composition containing a polymerization initiator, and an appropriate amount is continuously supplied between the uneven roller 61 and the pressing roller 62. The ultraviolet curable resin composition 65 is filled in the concave portion of the concavo-convex roller 61 and passes over the ultraviolet light source 64 in a state of being sealed by the upper surface of the heat adhesive film 54. During this time, irradiation of ultraviolet rays is performed, the ultraviolet curable resin is cured, and is fixed to the upper surface of the heat adhesive film 54. The thermal adhesive film 54 is separated from the uneven roller 61 after passing between the uneven roller 61 and the conveying roller 63.

In this way, a concavo-convex pattern made of the ultraviolet curable resin 57 is formed on the upper surface of the heat-adhesive film 54, but the heat-adhesive film 54 is not modified because heating is not performed during the above processing. The period and depth of the concavo-convex pattern can be set within the range of 0.1 to 100 μm, and a fine concavo-convex pattern can be formed. In this embodiment, the heat-adhesive film 54 is provided with unevenness having a size and a period of several μm.
To form. Although various resins can be used as the ultraviolet curable resin, it is desirable to use a resin having a high hardness so as not to be deformed by the embossing treatment described later. In this embodiment, urethane acrylate resin is used.

Instead of the ultraviolet curable resin, another ionizing radiation curable resin, for example, a resin curable by irradiation with electron rays, γ rays or the like may be used. In that case, the ultraviolet light source 6
Instead of 4, an ionizing radiation generating device corresponding to an ionizing radiation curable resin is used.

The metal vapor deposition layer 56 provided on the upper surface of the thermal adhesive film 54 is vapor-deposited along the unevenness formed on the upper surface of the thermal adhesive film 54. Although the metal vapor deposition layer 56 is formed of aluminum also in this embodiment, another metal may be vapor deposited to form the metal vapor deposition layer 56.

The thermosetting resin decorative plate 5 having the above-described structure has a thermoadhesive film 54 to which an ultraviolet curable resin 57 is previously attached and a metal vapor deposition layer 56 is formed, and a surface on which a pattern 52 is printed is 2 A transparent heat-resistant film 51 coated with a liquid-curable urethane resin is dry-laminated so that the metal vapor deposition layer 56 surface and the pattern 52 surface face each other, and then the heat-adhesive film 54 is used as the lower surface on the impregnated paper 55. In the state of
It is produced by hot pressing. A belt press molding device for embossing is used during hot pressing.
The surface of the thermosetting resin decorative plate 5 is provided with irregularities. The emboss extends to the inside of the thermosetting resin decorative plate 5 and the heat-adhesive film 54 is also deformed. However, as described above, the UV-curable resin 57 is a hard urethane acrylate resin and does not deform, so The irregularities on the upper surface of the adhesive film 54 are preserved.

The irregularities formed by embossing are set to be several times as large as the fine irregularities on the upper surface of the heat-adhesive film 54. By forming these irregularities in conformity with the design 52, it is possible to give a high stereoscopic effect to the design. Also, when the fine irregularities of the metal vapor deposition layer 56 are irregularly formed by the ultraviolet curable resin 57, light is diffusely reflected and a uniform metal is formed regardless of the angle at which the thermosetting resin decorative plate 5 is viewed. The key is obtained. When the fine irregularities are formed with orientation, the amount of reflected light changes depending on the viewing angle, and the depth of the pattern 52 is enhanced.

As described above, the thermosetting resin decorative board according to the present invention can express a clear picture pattern and can also have a metallic tone. Moreover, since it is possible to add a three-dimensional effect, a sense of depth, and a texture to the design, it has high decorativeness. Therefore, a thermosetting resin decorative board having excellent surface properties and excellent design has been realized.

[0057]

According to the thermosetting resin decorative board of the present invention, a pattern can be printed on the smooth surface of the transparent heat-resistant film. This design does not directly contact the impregnated paper, and the heat-adhesive film interposed between the design and the impregnated paper absorbs the roughness of the texture of the impregnated paper, so It is possible to prevent the quality of the pattern from being deteriorated by being reflected on the pattern. Further, since the heat-adhesive film firmly adheres to the impregnated paper, the impregnated paper does not peel off,
It becomes a decorative board with high strength, has improved durability and can be used for a wide range of applications. Furthermore, by embossing the heat-adhesive film, it is possible to form irregularities inside the decorative plate, which improves the design.

In the thermosetting resin decorative plate according to the second aspect, since the light is reflected by the metal vapor deposition layer, a decorative plate having a metallic tone can be obtained. Since the evaporated metal becomes the background of the pattern printed on the transparent heat-resistant film, various patterns can be formed as compared with the case where only the pattern is formed. Further, the reflected light from the vapor-deposited metal enhances the sense of brightness and further improves the design. When the adhesive layer is interposed between the design and the vapor-deposited metal, the design is in a state of being raised, and a deeper feeling and a three-dimensional effect can be obtained.

According to the third aspect of the invention, the diallyl phthalate resin impregnated in the impregnated paper is a resin having high bendability, so that the decorative plate can be easily formed into a curved surface. Therefore, the present invention can be applied not only to a flat shape but also to a curved article or structure, which makes it a versatile decorative board and facilitates secondary processing. Further, in the manufacturing process, since it is not necessary to cool after hot-press forming, continuous treatment is possible, the treatment efficiency is improved, and a continuous decorative sheet can be obtained.

In the structure of claim 4, the surface of the decorative plate is protected by a polyester film having excellent transparency, heat resistance, scratch resistance, water resistance, solvent resistance, and stain resistance. It is a decorative board with excellent versatility. In addition, polyester is a relatively inexpensive resin, and the manufacturing cost can be kept low.

According to the structure of claim 5, since the lower surface of the heat-adhesive film is an acrylic resin having high adhesion to the thermosetting resin in the impregnated paper, the heat-adhesive film and the impregnated paper firmly adhere to each other. Thus, the impregnated paper is prevented from peeling off.
This effect is particularly remarkable when the thermosetting resin in the impregnated paper is diallyl phthalate resin. Further, the upper surface of the heat-adhesive film is made of a relatively inexpensive polyester resin, and the increase in the cost of the decorative plate can be suppressed. Furthermore, a metal can be easily vapor-deposited on the polyester resin, which is convenient when the metal is vapor-deposited on the upper surface of the heat-adhesive film. Since these acrylic resin and polyester resin are integrated by co-extrusion into a heat-adhesive film, not only the step of bonding the acrylic resin layer and the polyester resin layer is not required at the time of production, but also both layers are There is no fear of separation.

In the case of the thermosetting resin decorative plate according to the sixth aspect, the texture of the pattern can be enhanced by forming the unevenness on the upper surface of the transparent heat-resistant film in accordance with the pattern. For example, if the design is wood grain, the portion corresponding to the conduit is made a recess to give a warm impression as if it were a real tree, and if it is stone or sand, fine unevenness is formed. It can enhance the inorganic impression. Further, when the metal deposition layer is laminated between the heat-adhesive film and the transparent heat-resistant film, the metallic feeling is enhanced by the scattering of light due to the unevenness, and the designability is enhanced.

In the case of the thermosetting resin decorative plate according to claim 7, when another layer serving as a background of the pattern is formed on the upper surface of the heat-adhesive film, unevenness is also generated in the background to improve the design. . In particular, when a metal deposition layer is formed by depositing a metal on the upper surface of the heat-adhesive film, the reflection direction of light by the metal can be adjusted by the method of forming the unevenness. If irregular irregularities are formed, light is diffusely reflected and a uniform metallic tone is obtained. If the unevenness is formed by giving the orientation, the amount of reflected light changes depending on the viewing direction, so that the feeling of depth can be enhanced. When the design printed on the lower surface of the transparent heat-resistant film has a grain pattern, the shining portion of the design changes depending on the viewing direction, so that a so-called terry feeling can be expressed.

Also in the thermosetting resin decorative plate of the eighth aspect, the design is improved by the unevenness of the upper surface of the heat-adhesive film. Since the unevenness formed by attaching the ionizing radiation curable resin to the polyester resin layer can be formed minutely, it is possible to finely set the light reflection direction by the metal vapor-deposited on the upper surface of the heat adhesive film. . The texture of the wood grain pattern is also well expressed.

Further, by using an ionizing radiation curable resin having a high hardness, even when embossing is applied at the time of hot-press molding of a decorative plate to form irregularities on the upper surface of the transparent heat-resistant film, the resin does not collapse and the shape is kept. In order to maintain the above, the irregularities on the upper surface of the heat-adhesive film are preserved, and the above-mentioned effect is surely exhibited. In this case, it is possible to form fine irregularities on the upper surface of the heat-adhesive film and large irregularities on the upper surface of the transparent heat-resistant film. In such a decorative plate, the unevenness on the upper surface of the transparent heat-resistant film enhances the three-dimensional effect, and the fine unevenness on the upper surface of the heat-adhesive film enhances the feeling of depth. These effects, combined with a sense of tension, enable a more excellent design expression.

[Brief description of drawings]

FIG. 1 is a sectional view of a thermosetting resin decorative plate according to a first embodiment.

FIG. 2 is a sectional view of a thermosetting resin decorative plate according to a second embodiment.

FIG. 3 is a cross-sectional view of a thermosetting resin decorative plate according to a third embodiment.

FIG. 4 is a sectional view of a thermosetting resin decorative plate according to a fourth embodiment.

FIG. 5 is a cross-sectional view of a thermosetting resin decorative plate according to a fifth embodiment.

FIG. 6 is a diagram showing a method of forming unevenness by attaching an ultraviolet curable resin to a heat adhesive film.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Thermosetting resin decorative board 11 Transparent heat resistant film 12 Picture 13 Adhesive layer 14 Thermal adhesive film 15 Impregnated paper 2 Thermosetting resin decorative board 21 Transparent heat resistant film 22 Picture 23 Adhesive layer 24 Thermal adhesive film 25 Impregnated paper 3 Thermosetting resin decorative plate 31 Transparent heat-resistant film 32 Picture 33 Adhesive layer 34 Thermal adhesive film 35 Impregnated paper 36 Metal deposition layer 4 Thermosetting resin decorative board 41 Transparent heat-resistant film 42 Picture 43 Adhesive layer 44 Thermal Adhesive Film 45 Impregnated Paper 46 Metal Vapor Deposition Layer 5 Thermosetting Resin Decorative Plate 51 Transparent Heat Resistant Film 52 Picture 53 Adhesive Layer 54 Thermal Adhesive Film 55 Impregnated Paper 56 Metal Vapor Deposition Layer 57 UV Curable Resin

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B32B 27/30 B32B 27/30 A 27/36 27/36

Claims (8)

[Claims] 1. A lower layer, in order, an impregnated paper impregnated with a thermosetting resin, a lower surface having a heat-adhesive film having adhesion to the thermosetting resin impregnated in the impregnated paper, and a pattern printed on the lower surface. A heat-curable resin decorative board, wherein a transparent heat-resistant film is laminated. 2. The thermosetting resin decorative board according to claim 1, wherein a metal vapor deposition layer is laminated between the heat adhesive film and the transparent heat resistant film. 3. The thermosetting resin decorative board according to claim 1, wherein the thermosetting resin impregnated in the impregnated paper is diallyl phthalate resin. 4. The transparent heat-resistant film is a polyester film, as claimed in any one of claims 1 to 3.
The thermosetting resin decorative board according to any one of 1. 5. The heat-adhesive film is a co-extruded film of acrylic resin and polyester resin, wherein the acrylic resin is provided on the lower surface and the polyester resin is provided on the upper surface. Item 5. A thermosetting resin decorative plate according to any one of Items 4. 6. The thermosetting resin decorative board according to claim 1, wherein the transparent heat-resistant film has irregularities on its upper surface. 7. The thermosetting resin decorative board according to claim 1, wherein an upper surface of the thermoadhesive film is formed in a shape having irregularities. 8. The heat-adhesive film has an upper surface formed in a concavo-convex shape by depositing an ionizing radiation curable resin on a layer made of a polyester resin. The thermosetting resin decorative plate according to any one of claims.