JPH01127336A - Decorative sheet and decorative plate - Google Patents

Abstract

PURPOSE:To obtain a decorative plate possessing solid appearance and depth, by a method wherein a composite sheet is made a decorative sheet by forming unevenness on the backside of the composite sheet, whose space between a plurality of transparent sheet layers possesses an appropriate pattern through printing, by emboss processing and stick the same to a board. CONSTITUTION:Pattern printing 2 is performed on a transparent polyvinyl chloride film 1 with printing ink, a transparent polyvinyl chloride film 1' is laminated to a printing surface of the film 1 and heat lamination of the same is performed. After solid print has been performed on the backside of the laminated film with ink containing a pearl pigment the film is made a decorative sheet A by performing hairline emboss processing of a pearl printed 4 surface. An adhesive agent 5 is applied to a veneer board 7, where a concealing layer 6 has been formed, with a roll coater and an embossed surface 3 of the decorative sheet A is laminated in accordance with the adhesive agent 5. With this construction, a decorative plate B which has depth, solid feeling and possesses gloss like a real tree can be made.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a decorative sheet and a decorative board using the same.

[Conventional technology]

As a decorative sheet to be attached to an appropriate substrate such as plywood to form a decorative board, ■ 23 to 65 g/m2 thin leaf paper is printed in the usual way, and amino alkyd,
One with a urethane resin coating layer, ■ one with a transparent PvC film laminated after printing on polyvinyl chloride film (PVC) using the usual method (
(Doubling sheet), 2) Printed on thin paper and then laminated with PvC film are known.

[Problem that the invention seeks to solve]

When the above-mentioned conventional decorative sheet is adhered to an appropriate substrate to form a decorative board, the printed layer is two-dimensional and lacks design properties such as three-dimensional effect and depth.

An object of the present invention is to provide a decorative sheet that solves the problems of the prior art described above.

[Means for solving problems]

It has been found that the above-mentioned problems of the conventional technology can be solved by forming a decorative sheet by forming irregularities by embossing etc. on the back side of a composite sheet which has a suitable pattern by printing etc. between the layers of a plurality of transparent sheets. .

That is, the present invention provides a "decorative sheet formed by forming unevenness on the back surface of a composite sheet having a pattern between the layers of a plurality of transparent sheets" and "a decorative sheet formed by forming irregularities on the back surface of a composite sheet having a pattern between the layers of a plurality of transparent sheets""A decorative board made by attaching a decorative sheet with irregularities to a substrate via an adhesive."

The material of the transparent sheet is polyethylene, polypropylene,
Resins such as polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polyethylene terephthalate, polycarbonate, polystyrene, polyamide (nylon), acrylic, ethylene/vinyl acetate copolymer, ethylene/vinyl alcohol copolymer, or ionomer.

Transparent sheets made of the above-mentioned materials are selected depending on the purpose, but for example, if you use a sheet made of ethylene/vinyl acetate copolymer, it will not only have sufficient performance for normal purposes, but also Since it has hygroscopicity and antistatic properties, it is suitable for use in housing materials.

The transparent sheet of these resins may be colored and transparent or colorless and transparent, as long as the pattern is visible through the transparent sheet.

The thickness of the transparent sheet depends on the application, but is approximately 0.03
~1.0 mouth.

The pattern is formed between the layers of a plurality of transparent sheets, and is usually formed by printing on either side of the transparent sheets forming the layers. For example, the pattern is
Anything can be used, such as copies of natural objects such as boards, cloth, and stones, or created abstract patterns.

The pattern itself may be transparent (usually colored and transparent) or opaque, and may cover the entire transparent sheet or partially cover the transparent sheet. However, if the pattern itself is transparent or if the pattern partially covers the transparent sheet, the adhesive underneath the decorative sheet (or the substrate underneath if the adhesive is transparent) will be visible. The color of the adhesive (or substrate) can be seen, and if the adhesive, the substrate, or both are colored, the colored state can be seen from the surface through the transparent sheet.

In addition, when there are three or more transparent sheets that make up a composite sheet, the number of layers that can form a pattern is two or more, but in that case, by appropriately combining the patterns formed between each layer, it is possible to It is possible to create patterns that are rich in variation.

The irregularities formed on the back surface of the composite sheet are usually fine ones provided by embossing.

The shape of the unevenness (depth of the unevenness, pitch of the unevenness, shape of the unevenness) is arbitrary, but is often a shape selected according to the pattern. For example, if the pattern is a copy of the wood grain of a board, the unevenness should be shaped like the opposite unevenness, and the same applies to other patterns. Alternatively, it may be unevenness that is not necessarily related to the pattern.

Alternatively, in order to give the uneven shape an optical effect, it is also possible to use a shape in which many lenticular lenses (cylindrical lenses) are lined up, or a shape in which convex lenses are arranged closely like the compound eyes of an insect.

Similar to a lenticular lens, there is a concave-convex shape called a hairline shape. When the pattern is wood grain and hairline-shaped unevenness is provided with the direction of the hairline aligned with the fiber direction of the wood grain, a three-dimensional effect of the wood grain resulting from the cell structure of the plant can be obtained. Hairline shapes often have many straight lines in a row, but when it comes to unevenness that matches the grain of the wood, it is more similar to natural shapes when the lines are broken or curved in the middle. In this way, the hairline shape used in conjunction with the wood grain has a pitch of 30.
Although it is preferable that it is 0μ or less, it is not limited to this.

The decorative sheet of the present invention has the above-described structure, and the pattern between the plurality of transparent sheet layers constituting the composite sheet and the distance from the surface of the unevenness on the back side of the composite sheet are different, so that the pattern stands out and has a deep appearance. A three-dimensional effect is created, and the three-dimensional effect is enhanced by the unevenness, and a subtle design feeling that changes, for example, a feeling similar to natural wood grain, etc. is imparted. A glossy pigment layer is provided on the back side of the formed composite sheet.

As the lustrous pigment layer, pearl pigments are particularly preferable, and examples thereof include (1) metal pigments such as aluminum powder, gold powder, and silver powder, (2) pearl pigments such as titanium oxide, mica, and aluminum hydroxide; Can be used in combination.

Further, the formation of the glossy pigment layer is usually performed by printing with ink of the glossy pigment, and pearl hairline printing or burl solid printing is particularly preferred.

As described above, by providing a glossy pigment layer, for example, a printing layer made of pearl pigment, on the uneven back surface of the decorative sheet of the present invention, light is diffusely reflected from the uneven surface.
Not only does the three-dimensional effect become more prominent, but a design feeling similar to that of real wood can be obtained.

Further, in the decorative sheet of the present invention, an appropriate pattern can be further formed on the surface of the composite sheet constituting the decorative sheet on the side where there are no irregularities. Further, a top coat layer having a protective function is usually formed on the front surface.

The top coat layer may be colorless and transparent or colored and transparent, and may be formed using an amino alkyd resin, a polyurethane resin, or the like, or may be formed using an ultraviolet curable or electron beam curable layer containing various acrylate monomers or oligomers. There are some types that are applied using ionizing radiation paint and cured.

The decorative board of the present invention is obtained by adhering the decorative sheet to a substrate via an appropriate adhesive.

The adhesive is selected in consideration of the adhesion between the substrate and the decorative sheet (particularly the back surface thereof).

When the glossy pigment layer is not provided on the back side of the composite sheet with the unevenness of the decorative sheet of the present invention, the glossy pigment is mixed into the adhesive, or a glossy pigment layer is formed on the top surface of the substrate. By doing so, it is also possible to obtain a decorative board that exhibits similar effects to the case where a glossy pigment layer is provided on the back surface of the composite sheet. Note that the glossy pigment used in this case is the same as in the case where a glossy pigment layer is provided on the back side of the composite sheet.

The substrate to which the decorative sheet is attached may be any substrate that can be used as a base material for decorative boards, such as the following: 0 Wooden materials such as plywood, particle board, hard board, and insulation board. ■Inorganic items such as gypsum board, asbestos perlite, calcium silicate board, glass wool, rock wool, ■Metal items such as iron plate, zinc plate, aluminum plate, lead plate, ■Polyethylene foam board, polystyrene foam board, urethane There are foam substrates such as foam and phenol foam, and synthetic resin boards such as ■phenol board, melamine board, polyester board, acrylic board, and vinyl chloride board. Each of the groups may be combined with each other, or different groups of (1) to (2) may be combined, and these may be used as a flat plate or a curved surface.

When a wood material such as plywood is used as a base material, the top surface of the board is painted with an opaque paint to unify the color in order to eliminate color variations. It can be used as a base treatment paint for the base material.In order to provide hiding properties, opaque pigments such as titanium oxide and calcium carbonate are mixed in.

The coating method may be a known method such as flow coating or roll coating. Further, in order to improve smoothness, it is preferable to perform sanding after painting.

[For production]

Since the decorative sheet of the present invention has the above-mentioned structure, when it is attached to a suitable substrate via an adhesive to form a decorative board, the pattern between the plurality of transparent sheet layers constituting the composite sheet and the pattern of the composite sheet By varying the distance from the surface of the unevenness on the back side, the pattern stands out and creates a deep three-dimensional effect.The unevenness also enhances the three-dimensional effect and creates a subtle design feeling that changes, such as natural wood grain. A similar feeling etc. is given.

In particular, by providing a glossy pigment layer, for example, a printing layer made of pearl pigment, on the uneven back surface of the decorative sheet of the present invention, light is diffusely reflected from the uneven surface, which not only makes the three-dimensional effect even more outstanding. , it is possible to obtain a design similar to that of real wood.

By adhering the decorative sheet of the present invention to a substrate via an appropriate adhesive, the decorative board of the present invention having the three-dimensional effect and design feeling can be obtained. When using an adhesive without a pigment layer, the adhesive may be mixed with the glossy pigment, or a glossy pigment layer may be formed on the top surface of the substrate to create a similar method to the case where the glossy pigment layer is present. A functional decorative board can be obtained.

〔Example〕

Embodiments of the decorative sheet and decorative board of the present invention will be described with reference to the attached FIG. 1.

Transparent polyvinyl chloride film (manufactured by Riken, thickness 0.1111
11) Compatible pattern printing 2 was applied to the film 1 using printing ink (KaX manufactured by Showa Ink Co., Ltd.), a transparent polyvinyl chloride film 1' was laminated on the printed surface of the film 1, and heat lamination was performed.

After solid printing was performed on the back side of the laminated film with an ink containing a pearl pigment (manufactured by Showa Ink), the four sides of the burl printing were subjected to hairline embossing to obtain a decorative sheet A.

Apply adhesive (Chuo Rika B^-) to the plywood 7 on which the hiding layer 6 has been formed.
820) When 5 was applied with a roll coat and the embossed surface 3 of decorative sheet A was laminated with adhesive 5, a decorative board B with depth, three-dimensionality, and a shine similar to real wood was created. .

〔Effect of the invention〕

As described above, since the decorative sheet of the present invention has unevenness formed on the back surface of the composite sheet having a pattern between the layers of a plurality of transparent sheets, the pattern has a three-dimensional effect and depth, and in particular, the decorative sheet of the present invention By providing a glossy pigment layer, for example, a printing layer made of pearl pigment, on the back surface on which the unevenness is formed, the three-dimensional effect becomes even more prominent, and a more realistic decorative sheet can be obtained. Then, by adhering the decorative sheet to a substrate with an appropriate adhesive, it is possible to obtain a realistic decorative board with a three-dimensional effect. Further, even when using a decorative sheet that does not have a glossy pigment layer on the back side, the glossy pigment may be mixed into the adhesive,
Alternatively, a decorative board with similar effects can be obtained by forming a glossy pigment layer on the upper surface of the substrate.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of one embodiment of the decorative sheet and decorative board of the present invention.

Claims (1)

[Scope of Claims] 1. A decorative sheet formed by forming irregularities on the back side of a composite sheet having a pattern between layers of a plurality of transparent sheets. 2. The decorative sheet according to claim 1, wherein the unevenness is hairline-like unevenness. 3. The decorative sheet according to claim 1, characterized in that a glossy pigment layer is provided on the back surface of the composite sheet on which unevenness is formed. 5. The decorative sheet according to claim 3, wherein the glossy pigment layer is a layer printed with glossy pigment ink. 4. The decorative sheet according to claim 3, wherein the lustrous pigment layer is a pearl pigment layer. 6. The decorative sheet according to claim 4, wherein the glossy pigment layer is a hairline printing layer or a solid printing layer using pearl pigment ink. 7. The decorative sheet according to claim 1, characterized in that a top coat layer is formed on the surface of the composite sheet on the side without unevenness. 8. A decorative board made by adhering a decorative sheet, in which a composite sheet has a pattern between the layers of a plurality of transparent sheets, with unevenness formed on the back surface, to a substrate via an adhesive. 9. The decorative board according to claim 8, wherein the adhesive is an adhesive mixed with a glossy pigment. 10. A decorative board characterized in that the substrate is coated with a base coat of opaque paint.