JPH10202790A - Ammonia absorbent-containing decorative material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an ammonia odor from being emitted when an adhesive of urea or the like is used for adhesion to woody material to be bonded with the adhesive or the base material by a method wherein an ammonia absorbent is contained in at least one layer of an adhesive layer or a decorative sheet layer. SOLUTION: A decorative material 10 is so constituted that a decorative sheet layer 11 composed of a base material sheet 3 and a decorative layer 4 is laminated through an adhesive layer 2 on a surface of a wood base material 1, and an ammonia absorbent is contained in the adhesive layer 2. As the ammonia absorbent, there are zirconium oxide of zirconium phosphate or the like, oxide of chromium, manganese, etc., oxide coagulated particles having titanium, aluminum, magnesium, etc., and zinc as main constituents, iron sulfide, that which in L-ascorbic acid is combined with iron oxide and iron sulfide, chelate compound consisting of magnesium silicate, chelate compound consisting of metallic ion and polymer, zeolite, activated carbon, impregnated carbon carrying metallic ion, etc., sulfonated coal, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative material using a wooden base material, and more particularly to a decorative material which does not emit an irritating smell of ammonia.

[0002]

2. Description of the Related Art Conventionally, decorative materials obtained by attaching a decorative sheet to the surface of a wood-based substrate such as plywood, medium density fiber board, and particle board have been frequently used. These wood-based substrates are bonded by an adhesive, and a urea-based adhesive is often used as the adhesive from the viewpoint of adhesive performance and cost. In this case, formaldehyde remains in the urea-based adhesive and emits an irritating odor,
Although there is a drawback that it cannot withstand use, various solutions and the like as disclosed in Japanese Patent Publication No. 50-28485 have been proposed as a method for preventing this.

[0003] This makes it possible to reduce the residual formaldehyde. However, when an adhesive such as urea is used in addition to the problem of residual formaldehyde, ammonia is released and, similarly to formaldehyde, an irritating odor is produced. In many cases, it was accompanied by a drawback that an extremely strong, unusable ammonia odor was generated.

Although the cause of the occurrence is not clear, ammonium chloride used as a curing agent or catalyst for the urea-based adhesive remains in the wood-based base material, which may cause moisture in the air or cosmetics. Ammonia gas is generated by a water-soluble adhesive or the like used when attaching the sheet, and an ammonia odor is generated. Alternatively, a method of adding a protein-rich powder such as defatted soybean flour or wheat flour as a bulking agent as a bulking agent in order to reduce the amount of residual formaldehyde released as described above and prevent a decrease in the adhesive strength of the urea-based adhesive is used. However, it is considered that the addition of this may cause emission of ammonia odor.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a wooden base material or a base material bonded by an adhesive. It is an object of the present invention to provide an effective method for preventing the release of an ammonia odor to the use of an adhesive such as a urea-based adhesive for the adhesion of a material.

[0006]

In order to achieve the above object, the present invention provides a decorative material in which a decorative sheet layer is laminated on one surface of a wooden base material via an adhesive layer. An ammonia adsorbent is contained in at least one of the agent layer or the decorative sheet layer, and the decorative sheet layer is a decorative sheet on the base sheet layer. A layer is applied, and if necessary, a primer layer is provided on the wooden base material side, and a surface protective layer is provided on the opposite side to the wooden base material, and the base sheet layer, the decorative layer, and the primer are provided. Layer and at least one of the surface protective layers contains an ammonia adsorbent. With such a configuration, ammonia generated from the wood-based base material or the adhesive used for attaching the decorative sheet to the base material is contained in any one of the decorative sheet layers or the adhesive layer. Since ammonia is trapped and adsorbed by the ammonia adsorbent, no ammonia is released from the surface side, so that the irritating odor due to ammonia is extremely reduced.

When the base sheet layer is made of a paper layer,
It is easy to impregnate the paper layer itself with the ammonia adsorbent, and it is also easy to coat the front and back surfaces, and due to its air permeability, the possibility of being released from the end of the wood base material is reduced, and the generated ammonia is reduced. It is trapped and adsorbed by the ammonia adsorbent, and the emission to the outside is further reduced.

Further, a backing layer is laminated on the other surface of the wooden base material via an adhesive layer, and at least one of the adhesive layer and the backing layer contains an ammonia adsorbent. By doing so, the probability that the generated ammonia is further adsorbed increases, and the amount of released ammonia is further reduced. Furthermore, since the backing layer has a moisture-proof property, it is possible to prevent the decorative material itself from warping due to moisture absorption or moisture release from the back surface of the wooden base material.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The ammonia adsorbent-containing decorative material of the present invention will be described with reference to FIGS. FIG. 1 is a sectional view schematically showing the structure of a decorative material 10 according to the first embodiment of the present invention. The decorative material 10 has a configuration in which a decorative sheet layer 11 composed of a base sheet 3 and a decorative layer 4 is laminated on the surface of a wooden base material 1 via an adhesive layer 2, and the adhesive layer 2 contains an ammonia adsorbent. The content is shown.

The wood-based material 1 is made of a wood-based material such as plywood, medium density fiber board, particle board, etc., which is bonded with an adhesive. Has gone by. This adhesive has advantages such as adhesion performance, simplicity of use, and low price, but usually, ammonium chloride is used as a curing agent or catalyst, and this ammonium chloride is used as a wood-based adhesive. It is considered that the irritant odor of ammonia is generated by remaining in the base material and then generating as ammonia gas at the time of use or the like.

The base sheet 3 used for the decorative sheet layer 11 is not limited to a specific material or structure, and a single layer or a laminated structure of any material can be selected according to the application. For example, high-quality paper, thin paper, Japanese paper, kraft paper, linter paper, paperboard, gypsum board paper, etc., polyethylene film, polypropylene film, polyvinyl chloride film, polyvinylidene chloride film, polyvinyl alcohol film, polyethylene terephthalate film, polycarbonate Film, acrylic resin film, nylon film, polystyrene film,
Ethylene vinyl acetate copolymer film, ethylene vinyl alcohol copolymer film, polyester, nonwoven fabric made of synthetic resin fiber such as vinylon, glass fiber, etc., plastic film such as ionomer, metal foil or sheet such as iron, aluminum, copper etc. used. Here, in consideration of good ink adhesion, high strength, ease of molding, etc., paper such as thin paper, reinforced paper, mixed paper, and thermoplastic resin film such as polyvinyl chloride, polyester, and polypropylene are used. Then, a decorative layer 4 such as wood grain is applied to the surface with ink.

As the adhesive layer 2 for adhering the wooden base material 1 and the decorative sheet 11, a vinyl acetate resin, a urea resin, or the like can be used. Is contained. Here, the ammonia adsorbent includes zirconium oxide such as zirconium oxide and zirconium phosphate, chromium (Cr), manganese (Mn), cobalt (Co), nickel (Ni),
Oxides such as copper (Cu) and vanadium (V), titanium,
Oxide agglomerated particles containing at least one selected from aluminum, magnesium, calcium and silicon and zinc as a main component, iron sulfide, iron oxide or iron sulfide combined with L-ascorbic acid, magnesium silicate, metal Chelate compounds composed of ions and polymers, zeolites, activated carbon, or acids, metal ions (Cr, Mn, Co, Ni, Cu,
V), impregnated charcoal carrying a halide, sulfonated charcoal, and the like, which may be appropriately selected depending on the type and use of the adhesive.

Next, a cosmetic material 20 according to a second embodiment of the present invention will be described.
2 is schematically shown in FIG. Hereinafter, the same reference numerals as those of the already described components are used, and duplicate description will be omitted. The decorative material 20 is a base sheet in which a wooden substrate 1 is coated on the surface thereof with an adhesive layer 2 via an adhesive layer 2 on both sides, and the decorative layer 4 and the surface protective layer 7 are formed on the surface. The decorative sheet layer 21 made of No. 3 is laminated, and the decorative sheet layer 21 contains an ammonia adsorbent.

The decorative sheet layer 21 includes the base sheet 3 and the decorative layer 4, the easily-adhesive primer layers 5, 6, and the surface protective layer 7. First, the decorative layer 4 is a pigment or a dye. , Kneading, formation of a picture pattern layer composed of an ink picture layer or a metal layer pattern, formation of a concavo-convex pattern, and the like. The pattern layer or the uneven pattern may be formed on the front surface, the back surface, or both the front and back surfaces of the base sheet when the base sheet is transparent, but needs to be formed on the front side when the base sheet is opaque. .

In the case of coloring by kneading a pigment or dye, the coloring is made transparent or opaque (hiding) depending on the application. As pigments, titanium white, carbon black,
Inorganic pigments such as ultramarine blue, red iron oxide and graphite, and organic pigments or dyes such as quinadrine, isoindolinone, phthalocyanine blue and aniline black are used. In addition, extenders (fillers) such as calcium carbonate, silica (silicon dioxide), alumina (aluminum oxide), and barium sulfate are added as necessary.

In order to form a pattern with the ink picture layer,
A normal printing method such as gravure printing, offset printing, letterpress printing, silk screen printing or the like can be used, but drawing may be used. The picture layer is formed by forming an ink composed of a resin binder and a pigment or a dye into an arbitrary pattern. In addition, a transfer sheet having an ink layer and, if necessary, an adhesive layer formed on a releasable support sheet is prepared in advance, and the ink layer formed on the transfer sheet is pressed or pressed. It is also possible to use a so-called transfer printing method in which the pattern is transferred to the surface on which the pattern layer (ink picture layer) is formed by heating. Examples of patterns are wood grain, stone grain, cloth grain,
There are leather crests, characters, figures, solid colors, etc.

The pattern of the metal layer is formed by vacuum-depositing a metal such as aluminum, chromium, gold, silver, and copper. Such a metal layer may be formed on the entire surface, or may be formed in a pattern (pattern). To form the pattern, the removal layer is formed with a desired pattern using a water-soluble ink at an unnecessary portion of the metal layer. A known technique such as vapor deposition of a metal on the entire surface from above, followed by washing with water to remove the metal layer immediately above the removal layer together with the above-mentioned removal layer, is used. Further, a so-called transfer printing method in which a metal layer previously formed on a transfer sheet is transferred to a surface on which a pattern layer (metal layer) is formed can also be used.

As a method of forming the concavo-convex pattern, there are a hairline process, a sand blasting process, an embossing process and the like, and a concavo-convex pattern having a concavo-convex shape is formed on the base sheet by these methods.

In the embossing, the embossing plate is pressed against the surface of the heated and softened substrate sheet by using a hot press type sheet-fed or rotary embossing machine to form an uneven shape on the surface of the embossing plate. This is a method of forming a concavo-convex pattern. Examples of the concavo-convex pattern formed by the embossing include a pattern expressing a wood channel groove, a wood grain, a stone surface unevenness, a surface texture of a fabric, a satin finish, a grain, a hairline, or a combination thereof. The concave portions of the concavo-convex pattern are filled with a coloring ink as necessary by a known wiping method. As the coloring ink, urethane resin, acrylic resin, polyester resin,
A vehicle obtained by adding a pigment or a dye to another conventional vehicle is selected and used, but a two-liquid curing type having good adhesion and solvent resistance is preferable. Wiping may be performed by any of conventionally used wiping methods such as a doctor blade method and a roll coating method. By these methods, the coloring ink is applied to the entire surface of the concave and convex pattern, and thereafter, the ink in the convex portion is scraped off and the colored ink is left in the concave portion.

In this embodiment, a surface protective layer 7 made of a transparent resin is provided on the surface of the decorative layer 4 in order to protect the surface of the decorative layer 4 from abrasion, water, chemicals and the like. Between the adhesive layer 2 and the base sheet 3 and the decorative layer 4
In order to make the adhesive force between them easy enough, the easy adhesion primer layers 5 and 6 are provided. Here, the resin used for the surface protective layer 7 is selected according to the required surface physical properties. In particular, when abrasion resistance and stain resistance are required, ionization of urethane acrylate, polyester acrylate, epoxy acrylate, or the like is required. Radiation curable resins and thermosetting resins such as epoxy polyurethane and polysiloxane are suitable. The easily-adhesive primer layers 5 and 6 may be appropriately selected depending on the resin used for the base sheet 3, the adhesive layer 2 and the decorative layer 4, and may be, for example, chlorinated polyolefin resin, urethane resin, epoxy resin, or the like. resin,
Examples thereof include a vinyl chloride resin, a vinyl chloride-vinyl acetate copolymer resin, nitrocellulose, and cellulose acetate. When the base material is a polyolefin resin, a two-component cured polyurethane resin, a chlorinated polyolefin resin, or the like is suitable.

In the present embodiment, the following form may be used to make the decorative sheet layer 21 contain the above-mentioned ammonia adsorbent. Coating on the front surface, back surface or both front and back surfaces of the base sheet 3,
Impregnate or knead. When the decorative layer 4 becomes an ink layer, it is added to the ink. It is added to the easily adhesive primer layers 5 and 6. It is added to the surface protection layer 7. A combination of two or more of

FIG. 3 is a sectional view schematically showing the structure of a decorative material 30 according to a third embodiment of the present invention. The decorative material 30 has the same surface configuration as that of FIG. 2, and has a configuration in which the backing layer 9 is laminated on the back surface of the wooden base material 1 with an adhesive layer 8 interposed therebetween. Also, the adhesive layer 8 or the backing layer 9 laminated on the back surface contains an ammonia adsorbent.

In the present embodiment, when the adhesive layer 8 contains an ammonia adsorbent, the same adhesive layer as the adhesive layer 2 described in the first embodiment may be used. Further, in this embodiment, the backing layer 9 may be selected according to the required physical properties, and is suitable for sticking to an object, preventing moisture of the wooden base material 1 from warping, or the present invention. It is only necessary to satisfy physical properties such as prevention of release of ammonia from the back surface, which is the main purpose of the invention. For example, when the backing layer 9 has a moisture-proof property, the backing layer 9 may have substantially the same moisture-proof property as the surface side of the woody base material 1 and may be made of the same material as the base material sheet 3 attached to the surface side. A three-layer structure in which thin paper is adhered to both sides of a polyolefin resin that uses a sheet or is inexpensive and has excellent moisture proofing properties, and also has excellent moisture proofing properties. A film obtained by depositing silicon oxide on the surface of a biaxially stretched polyester film having improved performance may be used.

When the backing layer 9 contains an ammonia adsorbent, the backing layer 9 is coated, impregnated or kneaded on the front surface, the back surface, or the front and back surfaces of the backing layer 9. When an easy-adhesion primer layer for improving the adhesive strength is present between the backing layer 9 and the adhesive layer 8 and between each layer when the backing layer 9 is composed of a plurality of layers, the easy-adhesion primer layer Added. Such an embodiment may be adopted. Further, in the present embodiment, by including the ammonia adsorbent also on the back surface, it is natural that a greater effect of preventing the release of ammonia can be obtained, but also when the ammonia adsorbent is included only on the back surface. , To exert a certain effect.

In the first to third embodiments, the method of attaching the decorative sheet layer to each of the wood-based substrates is as follows.
For example, a method of pressing and laminating a plate-shaped substrate with a pressure roller with an adhesive layer interposed therebetween, or facing or placing a decorative sheet layer on the surface of a wooden base material with an adhesive layer interposed therebetween Then, the decorative sheet layer is laminated on the surface of the wooden substrate by the pressure difference due to vacuum suction from the wooden substrate side, and the decorative sheet layer is bonded between the columnar substrates of the columnar and polygonal columns in the longitudinal direction of the columnar substrate. A so-called lapping method, in which the decorative sheet layers are sequentially pressure-adhered and laminated on a plurality of side faces constituting the columnar body by a plurality of rollers having different orientations, while being supplied through the agent layer,
First, a decorative sheet layer is laminated on a plate-shaped substrate via an adhesive layer, and then on the surface of the plate-shaped substrate opposite to the decorative sheet layer,
Cut a V-shaped or U-shaped groove reaching the interface between the decorative sheet layer and the plate-shaped base material, then apply an adhesive in the groove, and bend the groove to form a box or column. There is a so-called V-cut or U-cut processing method for molding a body. In the case where the backing layer 9 in the third embodiment is bonded, the above method or the like may be used to achieve a greater effect.

[0026]

As described above, according to the present invention, in a decorative material in which a decorative sheet layer is laminated on one surface of a wooden base material via an adhesive layer, the adhesive layer or the decorative material By using an ammonia adsorbent-containing decorative material characterized in that at least one of the sheet layers contains an ammonia adsorbent, it is used for attaching a wood-based substrate or a decorative sheet to the substrate. A very strong irritating smell of ammonia generated from the adhesive is trapped and adsorbed by any layer in the decorative sheet layer or the ammonia adsorbent contained in the adhesive layer, so that ammonia is released from the surface side. Therefore, the irritating odor due to ammonia is very low.

Further, a backing layer is laminated on the other surface of the wooden base material via an adhesive layer, and at least one of the adhesive layer and the backing layer contains an ammonia adsorbent. By doing so, the probability that the generated ammonia is further adsorbed is increased, and the amount of released ammonia is further reduced, thereby exhibiting a greater effect. In addition, because the backing layer has moisture resistance,
It is also possible to prevent the decorative material itself from warping due to moisture absorption or release from the back surface of the wooden base material.

[Brief description of the drawings]

FIG. 1 is a sectional view schematically showing the structure of a decorative material according to a first embodiment of the present invention.

FIG. 2 is a sectional view schematically showing the structure of a decorative material according to a second embodiment of the present invention.

FIG. 3 is a sectional view schematically showing the structure of a decorative material according to a third embodiment of the present invention.

[Explanation of symbols]

 10, 20, 30 Cosmetic material 11, 21 Cosmetic sheet layer 1 Wood-based base material 2, 8 Adhesive layer 3 Base sheet layer 4 Decorative layer 5, 6 Easy-adhesive primer layer 7 Surface protective layer 9 Backing layer

Claims (6)

[Claims] 1. A decorative material in which a decorative sheet layer is laminated on one surface of a wooden base material via an adhesive layer, wherein at least one of the adhesive layer and the decorative sheet layer has an ammonia adsorbent. An ammonia adsorbent-containing cosmetic material characterized by containing: 2. The decorative sheet layer, wherein a decorative layer is applied to a base sheet layer, and if necessary, an easy-adhesion primer layer on the wood base material side and a surface protection on the opposite side to the wood base material. A layer is provided, and at least one of the base sheet layer, the decorative layer, the easy-adhesion primer layer, and the surface protective layer contains an ammonia adsorbent. Ammonia adsorbent-containing cosmetic material. 3. The ammonia adsorbent-containing decorative material according to claim 2, wherein the base sheet layer is made of a paper layer. 4. A backing layer is laminated on the other surface of the wood base material via an adhesive layer, and at least one of the adhesive layer and the backing layer contains an ammonia adsorbent. The ammonia adsorbent-containing cosmetic material according to claim 1, wherein: 5. The decorative material according to claim 4, wherein the backing layer has a moisture-proof property. 6. The ammonia adsorbent-containing decorative material according to claim 1, wherein a backing layer having a moisture-proof property is laminated on the other surface of the wooden base material via an adhesive layer. .