JP2012245627A - Decorative laminated sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative laminated sheet through fewer steps at low cost, which includes surface-decorative printing paper firmly adhered to the base material to laminate them, improves strength between paper, and has excellent design, when the surface-decorative printing paper is adhered to the base material to be used as the decorative sheet.SOLUTION: The decorative laminated sheet A is formed by laminating the printing paper 1 a surface decoratively printed to a surface of the base material 4 via an adhesive 3. A conical micropore 2 is formed whose diameter is reduced from an adhesive surface 12 of the printing paper 1 to be adhered to the surface of the base material 4 to a surface 11 of the printing paper 1. In addition, the micropore 2 is filled with the adhesive 3. The surface-decorative printing includes plain solid printing.

Description

  The present invention relates to a decorative board, and in particular, relates to a decorative board formed by laminating sheet-shaped decorative paper on which various patterns are printed on the surface of a base material.

  In recent years, various types of building materials such as floor materials, wall materials, and ceiling materials have been used for interiors of ordinary houses and offices. Usually, these building materials have their design properties enhanced by bonding a decorative sheet having a pattern printed on the surface of a base material. In general, the decorative sheet is based on a sheet made of synthetic resin, cloth, paper, or the like, and various designs including plain are printed on the surface of these base sheets.

  For example, the interior flooring is generally printed with a design such as a woodgrain pattern on the surface of a synthetic resin film, strong paper, nonwoven fabric, etc., and a decorative sheet having a surface such as a woodgrain pattern obtained, It is attached to a wooden substrate such as plywood and combined to be used for flooring as a flooring material.

  In addition to the above flooring materials, various sheets made of synthetic resin, cloth, paper, and the like on which various designs such as a floral pattern, a geometric pattern, a cork pattern, and a painted wall tone are printed are used as wallpaper. And the interior decoration property is remarkably improved by sticking the wallpaper designed as mentioned above directly to the base material which comprises a wall surface, such as a concrete frame, a gypsum board, and a plywood, with an adhesive agent etc.

  However, when a synthetic resin sheet with a decorative surface is used as wallpaper, the synthetic resin may contain chemical substances that generate indoor harmful gases that cause so-called "sick house syndrome", such as formaldehyde, and at the beginning of construction. Some people complain of symptoms such as headaches because they emit a peculiar unpleasant odor.

  Therefore, in order to solve the above problem, Japanese Patent Application Laid-Open No. 2003-278099 includes beaten pulp, if necessary, diatomaceous earth, an additive that increases the bond strength between the diatomaceous earth and pulp, an inorganic material, and a phthalocyanine compound. A base material is laminated on the back side of the base paper used for papermaking, (printed pattern) and embossing are applied to the surface of the base paper, the surface is covered with a contamination-resistant surface layer, and many fine holes are formed on the surface layer. A wallpaper characterized by the above has been disclosed.

  And since the surface of the stain-resistant resin of the wallpaper has small holes, formaldehyde and malodorous components enter through the small holes and are adsorbed by diatomaceous earth, and further, the adsorbed components are decomposed by the phthalocyanine compound. Therefore, it is described that the formaldehyde adsorbed on the wallpaper is less likely to be re-released.

JP 2003-278099 A

  In the above technique, the surface decorative sheet is used as wallpaper by sticking to a wall surface, such as a concrete frame, but other than the wallpaper, the base material and the surface decorative sheet are combined to form a flooring or indoor partition, It is often used for interiors such as ceiling materials.

  At this time, when the above-mentioned synthetic resin is used as the surface decorative sheet, as described above, there is a problem such as generation of harmful indoor gases, and in order to eliminate this problem, the surface decorative sheet for interior is synthesized. Instead of resin sheets, cloth or paper decorative sheets are often used.

  However, when a paper decorative sheet is adhered to a base material such as plywood and used as a decorative board, the paper layer of the decorative sheet adhered during the period of use may cause separation between the papers, or the surface layer paper. There is a problem that the layer peels off.

  In addition, when the adhesive is applied to the above-mentioned base material to adhere the decorative paper, the adhesive is difficult to permeate into the interior from the back of the decorative paper, becomes in a state of biting air, causes swelling, etc., and the surface is uniform. There is also a problem that it is difficult to obtain a decorative board.

  The present invention has been made in view of such circumstances, and its purpose is to laminate the surface decorative printing paper firmly onto the substrate when the surface decorative printing paper is adhered to the substrate and used as a decorative board. It is possible to provide a decorative board at a low cost, which can improve the inter-paper strength and is excellent in design.

  In order to solve the above-mentioned problems, a decorative board according to the first aspect of the present invention is a decorative board obtained by laminating a printed paper surface-printed with an adhesive on the surface of a base material. In addition to forming conical micro-holes (including trapezoidal micro-holes with a larger diameter at the bottom and a smaller diameter) from the adhesive surface of the printing paper to be adhered to the material surface to the surface of the printing paper The micropores are filled with an adhesive.

  Examples of the base material include inorganic base materials such as concrete frames, mortar-finished walls, gypsum boards, etc., or solid board, plywood, thick plywood for floor boards, laminated wood, medium density fiberboard (MDF), particle board, woody plastic Various wooden substrates such as a board (WPB) can be used. Here, the adhesive surface of the substrate is preferably a rough surface from the viewpoint of adhesiveness with the adhesive, and a wood-based substrate such as a solid plate is preferably used. Among them, a plywood and a thick plywood are preferably used because they are excellent in strength, are easily available, and have good adhesion to an adhesive.

  Examples of the adhesive used for adhering decorative printing paper to the surface of the substrate include, for example, SBR adhesives, vinyl acetate adhesives, ethylene-vinyl acetate adhesives, melamine adhesives, and urea resin systems. A known emulsion-based adhesive that can be applied with a roll coater or a spreader, such as an adhesive, is used. The above-mentioned adhesive is preferably bonded to the substrate under heating and pressure.

  Furthermore, a thermosetting adhesive made of a thermosetting resin that cures the adhesive component itself by heating to form an adhesive layer may be used. For example, by applying a thermosetting adhesive consisting of polyester resin, vinyl ester resin, thermosetting acrylic resin alone or a mixed resin of two or more of these with a roll coater, and then heat-curing the base material A decorative printing paper may be adhered to the surface of the paper.

  The conical or frustoconical micropores whose diameter narrows from the back surface of the decorative printing paper to the front surface of the printing paper are formed from the back surface of the decorative printing paper, that is, from the adhesive surface to the surface. For example, the micro holes are perforated by passing the back surface of the decorative printing paper through a needle roll in which a large number of conical needles are implanted.

  The base paper for decorative printing on the surface is not particularly limited, and examples thereof include thin paper, kraft paper, Japanese paper, and the like, which are easily adhesive and have a strong paper layer, and a thin paper-like nonwoven fabric can also be used.

  In the decorative board according to the first aspect of the present invention, it is adhered to the surface of an inorganic base material such as a concrete frame, a mortar finish wall, a gypsum board, or a wooden base material such as a solid board, plywood or thick plywood. Innumerable conical or frustoconical micropores with a diameter narrowing from the back surface, ie, the adhesive surface, of the printed paper toward the front surface, ie, the print surface, the adhesive is applied to the back surface of the microholes. At the same time, the air accumulated in the micropores escapes upward from the surface through-holes and can be smoothly filled with the adhesive.

  As described above, the air accumulated in the opening easily escapes, so that the base material and the printing paper are firmly bonded to each other, and a decorative board having excellent design without swelling or the like on the printing paper surface can be obtained. .

  Further, since the adhesive is filled in the micropores and penetrates into the inside of the paper layer of the printing paper, a decorative board in which the printing paper is firmly bonded to the base material can be obtained after the bonding process is finished. In this way, the adhesive penetrates into the inside of the paper layer and solidifies, which increases the strength between the papers, prevents the problem of peeling between the papers and peeling of the paper layer on the surface layer, and durability. A decorative board with a thickness can be obtained.

  In addition, since the formation of micropores from the back surface of the printing paper toward the front surface is performed by a needle roller or the like in which a large number of substantially conical needles are implanted, an adhesion step can be performed subsequently to the microhole formation step. This is possible, and the decorative board can be manufactured with a small number of steps and in an advantageous cost.

(A) The surface view which shows the surface of the printing paper by which the surface decorative printing which concerns on this invention was carried out. (B) Sectional drawing which shows typically the cross section of the said printing paper. (C) The back view which shows typically the back surface of the said printing paper. (A) Sectional drawing which shows typically the cross section of the decorative board which concerns on this invention which adhere | attached and laminated on the thick plywood as a base material the printing paper by which the said surface decorative printing was carried out. (B) The external appearance perspective view which shows the decorative board which concerns on this invention.

  Hereinafter, embodiments of a decorative board according to the present invention will be described in detail with reference to the drawings. In the present embodiment, a mode is described in which a thick plywood is used as a base material, and printing paper that has undergone cosmetic printing is bonded and laminated on the surface thereof to obtain a flooring material as a decorative board.

Fig.1 (a) is a surface view which shows the surface of the printing paper 1 by which the decorative printing based on this invention was carried out. As shown in FIG. 1A, a natural wood grain pattern such as cedar or zelkova is printed on the surface 11 of the printing paper 1. The printing paper, basis weight ordinary paper is used a ^{20g / m 2 ~70g / m 2} , a known method, the wood grain pattern is printed, for example by gravure printing.

  FIG. 1B is a cross-sectional view schematically showing a cross section of the printing paper 1. As shown in FIG. 1 (b), there are innumerable conical micro holes 2 whose diameter narrows from the back surface of the printing paper 1, that is, the adhesive surface 12 to the base material to be described later, toward the front surface 11, that is, the printing surface. Is formed. The shape of the micropore 2 itself is a cone or a truncated cone, but the surface 11 portion of the printing paper 1 is a through hole 21.

  FIG. 1C is a back view schematically showing the back surface, that is, the adhesive surface 12 of the printing paper 1. As described above, innumerable minute holes 2 are formed on the adhesive surface 12 of the printing paper 1, and the hole diameter d of the opening 22 is adjusted to 0.05 mm to 0.5 mm. Here, the micropores 2 are formed by passing the back surface of the decorative printing paper through a needle roll in which a large number of conical needles are implanted immediately before the bonding step.

  FIG. 2A is a cross-sectional view schematically showing a cross section of a decorative board A according to the present invention in which the printing paper 1 subjected to surface decorative printing is bonded and laminated to a thick plywood as a base material 4. Examples of the adhesive 3 shown in FIG. 2A include various adhesives such as an SBR adhesive, a vinyl acetate adhesive, an ethylene-vinyl acetate adhesive, a melamine adhesive, and a urea resin adhesive. Used.

  Usually, after the adhesive 3 is applied to the surface of the substrate 4 by a roll coater, a spreader or the like, the substrate 4 and the printing paper 1 are bonded. As described above, the opening 22 is formed in the adhesive surface 12 of the printing paper 1, and innumerable conical minute holes 2 having a diameter narrowing from the opening 22 toward the through hole 21 on the surface 11 side. Therefore, when the printing paper 1 is mounted on the substrate 4 by a roll or the like, the adhesive 3 is filled into the conical micropore 2 from the opening 22 on the bonding surface 12 side of the micropore 2. .

  At this time, simultaneously with the filling of the adhesive 3, the air in the micro holes 2 escapes from the through holes 21 drilled on the surface 11 side, and the adhesive 3 smoothly fills the micro holes 2 without biting the air. . Since the adhesive 3 penetrates into the paper layer of the printing paper 1 in this manner, the inter-paper strength is greatly improved after the adhering step. Moreover, since this adhesion process is normally performed under heating and pressurization, the printing paper 1 and the thick plywood as the substrate 4 can be firmly adhered.

  FIG.2 (b) is an external appearance perspective view which shows the decorative board A which concerns on this invention. The decorative board A is used as a flooring material, but the surface of the decorative board A, that is, the surface 11 of the printing paper 1 is usually coated with a protective coating to improve external impact, caster resistance, weather resistance, and the like. Yes.

  For example, a paint made of a thermosetting resin that forms a transparent resin layer is applied to the surface 11 of the printing paper 1 and heated and cured. Examples of the thermosetting resin include polyester resins, vinyl ester resins, thermosetting acrylic resins, and the like, which are used alone or in a mixture of two or more. Furthermore, for example, a special processing agent that suppresses the activity of various allergens such as house dust and pollen allergen, and a surface property imparting agent such as an antiwear agent may be applied.

  In the present embodiment, paper having a wood grain pattern printed on the surface is used as the printing paper 1, but plain printing paper with a solid color coating may be used. Further, the surface of the solid-printed printing paper may be laminated with variously designed surface decorative sheets such as transparent PET film on which a pattern is printed, a nonwoven fabric, or the like.

  In addition, although embodiment mentioned above described the example which used the thick plywood as a base material, it is not restricted to a plywood, It is not only a plywood but a wooden base material, such as a particle board and a medium density fiber board (MDF), or inorganic, such as a gypsum board A base material may be used.

  Moreover, the use is not limited only to flooring, but it can also be used for interior wall materials, ceiling materials, and partition wall materials. As described above, the decorative board according to the present invention can be changed in design and belongs to the technical scope of the present invention unless departing from the scope of the claims.

A A decorative board 1 according to the present invention Printing paper 11 Surface 12 Adhesion surface 2 Micro hole 21 Through hole 22 Opening part 3 Adhesive 4 Base material d Opening hole diameter

Claims (1)

  A cone having a diameter that narrows from the adhesive surface of the printing paper to be bonded to the surface of the base material to the surface of the printing paper, in a decorative board formed by laminating printing paper that has been subjected to surface decorative printing via an adhesive on the surface of the base material A decorative plate formed by forming a microscopic hole (including a trapezoidal microhole having a larger diameter at the bottom and a smaller diameter as it goes up) and filling the microhole with an adhesive.

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