JPH11105229A - Decorative material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively capture and remove even formaldehyde which has been diffused once in the air in a room without receiving a restriction in the design by a method wherein the coating amount of a top coat layer which is formed on the surface of a formaldehyde capturing layer is specified. SOLUTION: This decorative material is constituted by laminating a pattern layer 2 and a top coat layer 3 in order on the surface of a formaldehyde capturing layer 1. The coating amount of the top coat layer 3 is made within a range of 1.5-4.5 g/m<2> . Also, as the capturing layer 1, e.g. one wherein a formaldehyde capturing material is internally attached, coated or soaked to a proper paper base material is used. Therefore, formaldehyde in air passes through the top coat layer 3 and easily reaches the capturing layer 1, and reacts with the formaldehyde capturing agent, and efficiently captured and removed. In addition, it is not necessary to add a large amount of the formaldehyde capturing agent in the top coat layer 3, and restrictions are not received in the design such as a color tone and a surface gloss.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative material for use in building interiors such as ceilings and walls, building materials such as working materials and fittings, and surface makeup for furniture, furniture, housing equipment and the like. In particular, the present invention relates to a decorative material having a function of trapping formaldehyde emitted from a woody base material such as a building material to make it odorless and harmless.

[0002]

2. Description of the Related Art In recent years, woody base materials such as plywood and particleboard, which are frequently used in house building materials and furniture, emit formaldehyde and contaminate indoor air. It has been pointed out that health problems such as symptoms may be given to residents, and it is becoming a social problem as one of the nearby environmental pollutions.

[0003] The main cause of the above phenomenon is that an adhesive containing urea or the like formaldehyde is used in the production of the above-mentioned wood base material such as plywood. In view of this problem, the plywood industry and others have begun to take measures such as replacing with formaldehyde-free adhesives and reducing the amount of formaldehyde used. There are various problems such as a decrease in productivity and a decrease in productivity such as initial adhesiveness and curing time, and no satisfactory product in terms of performance and price has been obtained.

[0004] In order to reduce the influence of formaldehyde while using a wood substrate that emits formaldehyde, for example, paper impregnated with a solution of a nitrogen-containing compound or the like (formaldehyde scavenger) that absorbs and reacts with formaldehyde is used. Has been proposed (see Japanese Patent Publication No. 52-134). Affixing decorative paper to the surface of a woody substrate having a poor surface design is already a common technique, so that the decorative paper is obtained by printing a pattern such as wood grain on the surface of the impregnated paper. If you use
A formaldehyde countermeasure and surface makeup function can be combined, and it is exactly two birds with one stone.

[0005] By the way, as for decorative paper for surface decoration such as a wooden base material, there is of course a simple structure in which a picture layer is formed by printing a gravure ink or the like on the surface of the paper base material.
This is limited to applicable applications due to problems such as loss of the pattern due to abrasion, easiness of surface damage, lack of water resistance, etc. Generally, transparent or translucent synthetic resin is applied on the picture layer. A top coat layer for surface protection is provided. As the top coat agent, for example, urethane-based resins and aminoalkyd-based resins are often used, and the amount of the coating depends on the degree of surface physical properties required for the intended use.
Generally, it is often in the range of about 5 to 15 g / m ² .

However, in the case of the decorative paper containing the formaldehyde scavenger described above, if a thick top coat layer is provided on the surface, a portion of the wooden base material covered with the decorative paper is not allowed to enter indoor air. Although the emission of formaldehyde can certainly be prevented, once formaldehyde is released into the indoor air from the mouth of a wooden substrate that is not covered with decorative paper, the topcoat layer is generally more gaseous than paper substrate. Due to poor permeability, there is a problem that this decorative paper cannot absorb and remove formaldehyde in room air.

[0007] As one of the methods for solving the above problems, a method of including a formaldehyde scavenger in the top coat layer can be considered. However, according to this method, the compatibility of the formaldehyde scavenger with the top coat resin is poor, which may cause cloudiness of the top coat layer and a decrease in its surface gloss, which imposes restrictions on formaldehyde scavenging ability or design. There is a problem of receiving.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems in the prior art,
It has good surface properties such as abrasion resistance and water resistance, is not restricted in terms of design, and it is not only formaldehyde emitted from wood base material, but is also once emitted into indoor air. It is an object of the present invention to provide a cosmetic material capable of effectively capturing and removing formaldehyde, and contributing to the elimination of unpleasant odors and health hazards.

[0009]

According to the present invention, there is provided a decorative material having a top coat layer on the surface of a formaldehyde trapping layer, wherein the amount of the top coat layer is 1.5 to 1.5.
It is 4.5 g / m ² .

[0010] In particular, in the cosmetic material of the present invention, the formaldehyde-trapping layer contains a formaldehyde-trapping agent,
A paper substrate coated or impregnated, wherein the top coat layer is provided on the surface of the paper substrate via a picture layer.

Particularly, the decorative material of the present invention is obtained by sticking any of the decorative materials described above on the surface of a wooden substrate.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings. 1 to 7 are side sectional views showing an embodiment of the decorative material of the present invention.

For example, as shown in FIG. 1, the decorative material of the present invention has a pattern layer 2
The top coat layer 3 is sequentially laminated, and the coating amount of the top coat layer 3 is 1.5 to 4.
It is within a range of 5 g / m ² .

As the formaldehyde-trapping layer 1, for example, a layer obtained by internally adding, coating or impregnating a formaldehyde-trapping agent on a suitable paper substrate can be used. As the paper base material, any paper that is usually used as a base material for such a decorative material can be used. Generally, thin paper having a basis weight of about 23 to 40 g / m ² is often used, but is not limited thereto. For example, titanium paper, resin-impregnated paper, resin-mixed paper, and paper-reinforced paper Various papers such as bleached or unbleached kraft paper, linter paper, woodfree paper, coated paper, inorganic paper, flame retardant paper, paperboard, and Japanese paper can be used. In addition, any material other than paper can be used as long as it is a material similar to this. For example, a woven or nonwoven fabric, a foamed resin sheet, a veneer, or the like can be used. Further, a composite, a laminate, or the like of a plurality of materials selected from these may be used.

The formaldehyde scavenger to be internally added, applied or impregnated to the paper substrate may be any substance as long as it can react with formaldehyde physically or chemically to make it odorless and harmless. For example, amino compounds such as dicyandiamide and melamine, amides such as urea, barbituric acid and semicarbazide hydrochloride, amino acids such as glutamate, glycine and alanine, isopropylhydrazine, butylhydrazine, benzylhydrazine, phenylhydrazine and hydra Organic hydrazines such as zobenzene, methyl carbazate, propionic hydrazide, carbohydrazide, adipic dihydrazide,
A composition containing at least a nitrogen-containing compound such as a hydrazine derivative such as a hydrazide such as dodecanedihydrazide, thiocarbohydrazide, isophthalic acid dihydrazide, or 4,4′-oxybisbenzenesulfonylhydrazide can be used. In particular, in the present invention, it is preferable to use a material having high reactivity with formaldehyde in order to sufficiently exhibit formaldehyde trapping ability from the air despite the presence of the top coat layer 4,
Specifically, it is most preferable to use a hydrazine derivative, a urea-based or amide-based compound.

The formaldehyde scavenger does not necessarily need to be internally added, coated or impregnated so as to be uniformly contained in the entire paper substrate as shown in FIG. 1, and for example, as shown in FIG. Alternatively, it may be partially applied or impregnated on the surface side of the paper base material 11. Further, as long as the paper substrate 11 is gas-permeable (particularly formaldehyde-permeable),
As shown in FIG. 3, it may be applied or impregnated on the back side of the paper base material 11, or both may be used in combination as shown in FIG. In addition, the formaldehyde scavenger does not necessarily need to be applied or impregnated on the entire surface of the paper substrate 11, and may be provided in an arbitrary pattern such as a dot, a stripe, or a picture,
Thereby, it can also serve as a picture layer 2 described later.

Examples of the method for incorporating the formaldehyde scavenger into the paper base 11 include an internal addition method in which the formaldehyde scavenger is added to the pulp slurry during papermaking, and application or impregnation to the paper base 11 after papermaking from the front and / or back. And the like. As a method of application or impregnation, for example, a gravure coating method, a microgravure coating method, a roll coating method,
Knife coating method, air knife coating method, spray coating method, rod coating method, kiss coating method, die coating method,
A conventionally known arbitrary method such as a lip coating method and a dip coating method can be applied, and may be appropriately selected according to the workability of the paper substrate 11 and the viscosity characteristics of the formaldehyde scavenger coating liquid. The timing of application or impregnation may be immediately after papermaking, before or after the formation of the picture layer 2 or after the formation of the top coat layer 3.

The picture layer 2 is provided for the purpose of imparting a design property to a desired decorative material. In order to achieve the object of the present invention, the picture layer 2 must be at least formaldehyde permeable. If the printing layer is made of ink, there is usually no problem. Further, even if the material is formaldehyde-impermeable, for example, as in normal printing, a pattern is composed of a large number of fine dot patterns or a pattern having a large number of fine dot holes. Thereby, the object of the present invention can be sufficiently achieved.

The above-described printing ink generally includes a coloring agent such as an organic or inorganic dye or pigment, an extender, a filler, a tackifier, a plasticizer, a stabilizer, a defoaming agent, a leveling agent. Together with a suitable additive such as a surfactant and a desiccant, a solvent or a diluent, etc., in a binder made of a synthetic resin or the like. As the colorant, inorganic pigments such as titanium dioxide and graphite may be used for applications requiring a high degree of concealment, but generally, for example, disazo yellow, hansa yellow, isoindolinone, In general, organic pigments having high transparency and excellent color effects, such as lake red, brilliant carmine, quinacridone, perylene, anthraquinone, and phthalocyanine, and carbon black are used. Examples of the binder include acrylic resins, polyester resins, polyamide resins, styrene resins, vinyl resins, urethane resins, melamine resins, epoxy resins, alkyd resins, cellulose derivatives, shellac, and rosin. , Modified rosin, phenolic resin, coumarone resin, ketone resin, petroleum resin and the like, or a mixture or copolymer of two or more thereof can be used.

As a method for forming the pattern layer 2, various printing methods such as a gravure printing method, an offset printing method, a letterpress printing method, a flexographic printing method, a screen printing method, an ink jet printing method, an electrostatic printing method and the like are applied. Is typically formed by Of course, the present invention is not limited to these. For example, a hand-drawing method, a blackwashing method, a transfer method, a photographic method, an electrophotographic method, a photosensitive resin method, a vacuum deposition method,
Any conventionally known image forming means such as a chemical corrosion method, a thermosensitive coloring method, and a discharge breakdown method can be applied. The type of the pattern is arbitrary depending on the purpose of use and the taste of the user, and is generally, for example, a wood grain pattern, a stone grain pattern, an abstract pattern, etc., but the present invention is not limited to these. For example, solid printing on the entire surface may be used.

The top coat layer 3 is provided for the purpose of imparting surface properties such as abrasion resistance and water resistance to the surface of the decorative material, and includes, for example, an acrylic resin, an aminoalkyd resin, a urethane resin, Any conventionally known topcoat agent containing a polyester resin, an epoxy resin, a melamine resin, a fluorine resin, a cellulose derivative, an ionizing radiation-curable resin, or the like as a main component can be applied. However, in order to achieve the object of the present invention, the coating amount of the top coat layer is 1.
It needs to be in the range of 5 to 4.5 g / m ² (after drying). If the coating amount is less than 1.5 g / m ² , it is impossible to obtain satisfactory surface properties such as abrasion resistance and water resistance, surface gloss, and coating feeling. On the other hand, if the coating amount is more than 4.5 g / m ² , the gas permeability becomes extremely low.
Is not allowed to react with the formaldehyde scavenger in the formaldehyde scavenging layer 1 and the formaldehyde scavenging efficiency is reduced.

The topcoat layer 3 is adjusted to desired physical properties by appropriately adding additives such as a coloring agent, a lubricant, a lubricant, an antistatic agent, a gloss control agent, and an antiblocking agent, if necessary. can do. Also, the top coat layer 3
When a formaldehyde scavenger is also contained, the efficiency of trapping formaldehyde in room air can be further improved. As a formaldehyde scavenger used for this purpose, when a hydrazine derivative having a property of forming a chemical bond with a resin molecule and having a property of stabilizing is used, a decrease in surface physical properties such as surface strength and water resistance, cloudiness, This is preferable because adverse effects on the design surface such as a decrease in gloss are small. Among them, for example, when a hydrazine derivative having a plurality of hydrazino groups is used, such as carbohydrazide or adipic dihydrazide, this also acts as a crosslinking agent between resin molecules,
The top coat layer 3 which is more excellent physically and chemically can be obtained. In this case, in particular, when an aqueous emulsion resin-based material is used as the top coat agent, it is highly soluble in the resin solution, and strong cross-linking is facilitated by reaction with a hydrophilic group such as an acid group or a carbonyl group of the resin. In addition, problems such as volatilization of the organic solvent during the production process and residual solvent after the production can be solved at the same time.

In the example described above, the formaldehyde scavenging layer 1 has been described assuming that it is a layer consisting essentially of paper. However, the present invention is not limited to this. It may be an internally added or coated resin film. Comparing the properties of both, paper is essentially a porous body, so the formaldehyde scavenger internally added, coated or impregnated with this has a large effective surface area and high formaldehyde trapping efficiency, but strength and moldability. Is inferior to Therefore, a cosmetic material using a resin film is suitable for applications such as V-cut processing and curved surface application processing that require strength and formability.

However, when the resin film is coated with a formaldehyde scavenger and used as the formaldehyde scavenging layer 1, the resin film generally has very low formaldehyde permeability, so that the formaldehyde scavenging from the wood substrate is trapped. In order to combine the removal function with the capture and removal of formaldehyde in room air, it is necessary to apply a formaldehyde capture agent to both sides of the resin film. However, even when the formaldehyde scavenger is applied only to the surface side of the resin film, if it is used for sticking to the surface of a substrate that does not emit formaldehyde, such as a metal, a synthetic resin, or an inorganic material, it may be used in the air. The function of trapping and removing formaldehyde can be sufficiently achieved. In addition, even if this is used by sticking it to a wood substrate that emits formaldehyde, the resin film acts as a barrier layer against the emission of formaldehyde from the surface of the wood substrate, while formaldehyde that is released into the air from the mouth of the wood etc. Is trapped and removed by the formaldehyde trapping agent applied to the surface side of the resin film,
A certain effect can be obtained.

As another embodiment of the cosmetic material of the present invention,
For example, as shown in FIG. 5, a formaldehyde-permeable intermediate layer 4 can be provided between the formaldehyde trapping layer 1 and the top coat layer 3. As the intermediate layer 4, for example, a gas-permeable (formaldehyde-permeable) resin layer made of an acrylic aqueous emulsion resin, a polyolefin aqueous emulsion resin, a polyester aqueous emulsion resin, a polyurethane aqueous emulsion resin, or the like can be used. . In FIG. 5, the pattern layer 2 is provided between the intermediate layer 4 and the top coat layer 3. However, when the intermediate layer 4 is transparent or translucent, the pattern layer 2 is It may be provided between the intermediate layer 4 and the inside of the intermediate layer 4 or the like, and by providing them at a plurality of locations, it is possible to obtain a deep and three-dimensional design feeling.

The intermediate layer 4 may be heated and foamed by adding an organic, inorganic or microcapsule type foaming agent, if necessary. It is more preferable because the trapping efficiency is improved. In addition, even if the resin material does not originally have gas permeability, such as a polyvinyl chloride resin, for example, a porous material such as an open-cell foam may be obtained by using a foaming agent and a cell-communicating agent in combination. If it is a body, the object of the present invention can be achieved. Thus, in the configuration in which the intermediate layer 4 is provided, a three-dimensional design property can be imparted by embossing the surface of the decorative material as necessary.

In the above example, the formaldehyde scavenger may be added to the intermediate layer 4 instead of internally adding, coating or impregnating the base paper 11. With this configuration, the barrier between the layer containing the formaldehyde scavenger and the outside air is reduced, so that the efficiency of trapping formaldehyde in room air can be improved. Of course, base paper 1
Internal addition, application, or impregnation of a formaldehyde scavenger to 1 may be used in combination.

FIG. 6 schematically illustrates this.
On the base layer 5, a formaldehyde trapping layer 1, a picture layer 2, and a top coat layer 3 are sequentially laminated. As an application of this configuration, as the base layer 5, other than paper, for example, polyolefin resins such as polyethylene and polypropylene,
Olefin copolymer resins such as ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, polyethylene terephthalate, polybutylene terephthalate,
Polyester resins such as polyethylene naphthalate, acrylic resins such as polymethyl methacrylate, resin films such as polyvinyl chloride, polyvinylidene chloride, polystyrene, nylon, and polycarbonate, as well as wood substrates such as metal foils, metal plates, and plywood Any material generally used as a base material of a decorative material, such as a resin molded product, an inorganic material, or the like, can be used.

The formaldehyde-trapping layer 1 as the intermediate layer is not necessarily limited to a gas-permeable material, but may be a layer made of any resin to which a formaldehyde-trapping agent is added. The formaldehyde trapping layer 1
It can be colored if necessary. When the picture layer 2 is provided on the surface side of the formaldehyde-trapping layer 1, the formaldehyde-trapping layer 1 is not necessarily required to be transparent or translucent. Any amount of formaldehyde scavenger may be included.

In addition, the decorative material of the present invention can be embodied by variously changing its detailed configuration without departing from the gist of the present invention.

The above-described decorative material of the present invention can be directly applied to a ceiling or a wall of a house or the like as it is. However, as shown in FIG. As a cosmetic material stuck with the agent 7, etc., it can also be used as a building material such as a construction material, a fitting, or a material for furniture, furniture, housing equipment, and the like. Of course, the function of capturing and removing formaldehyde in room air can be sufficiently exhibited even when used by attaching to a surface of a base material other than wood, such as a metal, synthetic resin, or inorganic material.

As the wood substrate 6, for example, plywood, laminated wood, particle board, hard board, medium density fiber board (MDF) and the like are used. The shape of the wooden base material 6 is not necessarily limited to a flat plate shape, and may be, for example, a columnar shape, an irregular cross-sectional shape, a three-dimensional uneven shape, or the like. It is stuck along the surface shape of the wooden base material 6 by means such as a molding method.

[0033]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to specific examples and comparative examples of the present invention.

<Example 1> Amount of amide-based formaldehyde scavenger (trade name: Daim Shuholm, manufactured by Dainichi Seika Co., Ltd.) on the back surface of the paper-sheet-reinforced paper having a basis weight of 30 g / m ² . After coating at 5 g / m ² , the surface is subjected to concealed solid printing and wood grain printing by a gravure printing method using a nitrocellulose-based ink to form a picture layer.
A liquid-curable urethane resin-based transparent top coat agent was applied at a coating amount of 2.5 g / m ² after drying to form a top coat layer, thereby producing a decorative paper of the present invention.

The decorative paper was press-bonded to one side of a commercially available 2.7 mm thick MDF substrate via a vinyl acetate-based adhesive to produce a decorative material of the present invention.

Comparative Example 1 A decorative paper was prepared under the same conditions as in Example 1 except that the amount of the top coat agent applied was 6 g / m ² and the other conditions were the same, and affixed to an MDF substrate of the same brand under the same conditions. Thus, a cosmetic material was produced.

<Comparative Example 2> In Example 1, the application of the formaldehyde scavenger to the base paper was omitted, and a decorative paper was prepared under the same conditions, and the same conditions were applied to an MDF base material of the same brand. To make a cosmetic material.

Comparative Example 3 A decorative paper was prepared under the same conditions as in Comparative Example 2 except that the amount of the top coat agent applied was 6 g / m ² and the other conditions were the same. Thus, a cosmetic material was produced.

<Formaldehyde Emission Test> Using the cosmetic materials of Example 1 and Comparative Examples 1 to 3 and MDF of the same brand to which no decorative paper was attached, formaldehyde was applied in accordance with the JAS method (desiccator method). An emission test was performed. That is, each of the cosmetic materials is 50 mm × 150 mm
Using 10 pieces cut into pieces, put in a desiccator together with a crystallization dish containing 300 ml of distilled water, and seal them.
For 24 hours, the formaldehyde in distilled water was quantified by the acetylacetone method. The results were as follows.

[0040]

Example 2 First, a formaldehyde scavenger containing melamine as a main component was applied to a surface of a flame-retardant paper having a basis weight of 70 g / m ² to a coating amount of 10 g / m ² after drying, and then applied to a microstructure. Acrylic aqueous emulsion resin to which a capsule foaming agent is added at a solid content ratio of 3% by weight is applied in an amount of 200 g after drying.
/ M ² , the surface of which is printed with an abstract pattern using an acrylic water-based ink, and then an acrylic topcoat agent to which an epoxy-based curing agent is added is applied, and the coated amount after drying is 3.5 g.
/ M ² and then heat foaming and embossing,
A cosmetic material of the present invention was produced.

<Example 3> Carbohydrazide as a formaldehyde scavenger was added at a solid content ratio of 10% by weight and a microcapsule foaming agent at a solid content ratio of 5% by weight was added to the surface of a flame-retardant paper having a basis weight of 70 g / m ^2. The dried polyolefin-based aqueous emulsion resin was applied at a coating amount of 250 g / m ² after drying, an abstract pattern was printed on the surface with a vinyl chloride-vinyl acetate resin-based ink, and an epoxy-based curing agent was further added. Amount of application after drying acrylic top coat agent 3
g / m ² , heat foaming and embossing,
A cosmetic material of the present invention was produced.

Example 4 A wood-grain pattern was printed on the surface of a colored polyolefin resin film having a thickness of 25 μm with a urethane-based ink, and the surface was coated with a melamine as a formaldehyde scavenger via a urethane-based adhesive. Is 2
At the same time as attaching a 50 μm-thick polyvinyl acetal resin film internally added with 0% by weight, embossing a conduit pattern, filling the conduit portion with a coloring agent by a wiping method, and then applying an isocyanate-curable urethane-based top coat agent. The applied amount was 3 g / m ² after drying to prepare a decorative material of the present invention.

Example 5 Thin paper having a basis weight of 30 g / m ² was impregnated with dicyandiamide as a formaldehyde scavenger and dried so that the impregnation amount after drying was 5 g / m ² .
Then, the surface is subjected to concealed solid printing and woodgrain pattern printing by a gravure printing method using a nitrifying cotton-based ink, and then an acrylic resin-based aqueous emulsion type top in which adipic dihydrazide is added as a formaldehyde scavenger at a solid content ratio of 10% by weight. Coating agent is applied to a coating amount of 4 g / m ² after drying,
After drying and curing, a cosmetic material of the present invention was produced.

[0045]

As described in detail above, in the decorative material of the present invention, since the coating amount of the top coat layer provided on the surface of the formaldehyde trapping layer is in the range of 1.5 to 4.5 g / m ² , Formaldehyde in the air permeates the top coat layer, easily reaches the formaldehyde trapping layer, reacts with the formaldehyde trapping agent, and is efficiently trapped and removed. In addition, since there is no need to add a large amount of formaldehyde scavenger to the top coat layer, there is no restriction on design such as color tone and surface gloss. Therefore, by using the decorative material of the present invention for interior decoration of a building such as a house, the wood base material can be sufficiently satisfied in terms of surface physical properties such as abrasion resistance and water resistance and design properties. It greatly reduces unpleasant odors and health hazards caused by formaldehyde emitted into the wood, and contributes to improving the quality of life.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment of a decorative material of the present invention.

FIG. 2 is a side sectional view showing an embodiment of the decorative material of the present invention.

FIG. 3 is a side sectional view showing an embodiment of the decorative material of the present invention.

FIG. 4 is a side sectional view showing an embodiment of the decorative material of the present invention.

FIG. 5 is a side sectional view showing an embodiment of the decorative material of the present invention.

FIG. 6 is a side sectional view showing an embodiment of the decorative material of the present invention.

FIG. 7 is a side sectional view showing an embodiment of the decorative material of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Formaldehyde capture layer 11 Base paper 12 Formaldehyde capture agent application or impregnation layer 2 Picture layer 3 Top coat layer 4 Intermediate layer 5 Base layer 6 Wood base 7 Adhesive

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B32B 27/00 B32B 27/00 E 27/18 27/18 F E04F 13/08 E04F 13/08 A

Claims (3)

[Claims] 1. A cosmetic material having a topcoat layer on the surface of a formaldehyde-trapping layer, wherein the amount of the topcoat layer applied is 1.5 to 4.5 g / m ² . 2. The formaldehyde-trapping layer is a paper substrate in which a formaldehyde-trapping agent is internally added, coated or impregnated, and the topcoat layer is provided on the surface of the paper substrate via a picture layer. A cosmetic material characterized by the following. 3. A decorative material obtained by sticking the decorative material according to claim 1 or 2 on the surface of a wooden substrate.