JP4707979B2 - Laminated decorative board and method for producing the same - Google Patents

Description

  The present invention relates to a laminated decorative board in which any one of a thermosetting resin plate, a veneer plate, or a plywood having a veneer plate disposed on a surface is bonded to a cork plate.

  The following patent documents are listed as prior arts in which a cork and a plastic sheet or a veneer are bonded to form a laminate having heat insulation or sound absorption.

Japanese Patent Laid-Open No. 61-227044 JP-A-9-151596 Japanese Patent Laid-Open No. 9-189118 JP 2000-127313 A

The invention of Patent Document 1 is a 1 to 5 mm cork board bonded with a veneer with an adhesive, and Patent Document 2 of the invention forms a vinyl chloride layer having a bending elastic modulus of 50 to 2000 kgf / cm ^{2 on} wood powder. Then, a cork layer is bonded to the vinyl chloride layer via an adhesive, and a transparent surface layer is formed on the surface. The invention of Patent Document 3 kneads a cork chip and rubber, and forms this into a sheet shape. shaped, formed by bonding a vinyl chloride layer on the surface, of the invention Patent Document 4, the bending 100 parts by weight of the olefin resin of the elastic modulus 200~2000kgf / cm ^2, the average particle diameter cork chips 15 of 200~5000μ The fibrous layer C is laminated on the layer A composed of 150 parts by weight and the flame retardant 10 to 180 parts by weight through the adhesive layer B.

  The prior art of each of the above patent documents is obtained by laminating a protruding plate, PVC, and a fibrous layer on a cork plate or a plate formed by kneading a cork chip and rubber / plastic.

  The above prior art discloses a “product” in which a cork plate or a molded plate of an admixture mainly composed of cork (hereinafter represented by a cork plate) is laminated with a projecting plate, a plastic plate, a fiber, and the like. However, there is no specific disclosure about the bonding method.

  In fact, it is extremely difficult to laminate various plate materials on the cork board via an adhesive, because the cork has a large number of small and large pores, and the adhesive is eaten by these pores, so the bonding is extremely difficult. In addition, there is a problem that when the pressure and heating are performed in the bonding process, the cork plate is stiff and the desired thickness cannot be maintained, and the heat insulation / sound absorption effect cannot be obtained.

  Further, none of the laminates of the cork board and various board materials according to the above-described prior art are laminated with a thermosetting resin board such as a melamine resin board or a polyester board (hereinafter represented by a melamine resin board).

  A case where a melamine resin plate is used as a building material is generally affixed to the surface of a wooden base material via an adhesive like a counter table, and the thickness of the melamine resin plate ranges from 0.8 mm to 3 mm. It is extremely rigid at 0.0 mm, and its size is a plate shape cut into 90 × 180 cm or 90 × 270 cm according to the building module, so it is extremely difficult to carry.

  In view of the above situation, the present invention firstly maintains the thickness of the cork plate, which has been said to be difficult, and provides a reliable bonding technique between the cork plate and various plate materials without impairing the heat insulation and sound absorbing properties. Secondly, providing a laminated decorative board in which a cork board and a melamine resin board, etc., which have not been obtained before, and third, cork board and melamine resin cut according to a building module It is an object of the present invention to provide a cork / melamine resin bonded plate that is easy to carry by being rolled into a cylindrical shape.

In order to solve the above-described problems, the present invention applies an adhesive resin composition to the surface of a cork plate having a density of 0.25 ± 0.03 g / cm ³ , and the thermosetting property is passed through the adhesive resin composition. resin plate, veneer or sliced veneer in the product layer veneer ing by bonding any of plywood which arranged on the surface of, as the adhesive resin composition, the resin component 35% to 65% of the emulsion type, rubber-based solvent type, , synthetic rubber-based solvent type, and adopted from the synthetic rubber latex type, as the thermosetting resin sheet, to adopt a melamine resin plate or a polyester plate, as an adhesive resin composition of the emulsion type, acrylic resin system, and adopted a vinyl acetate resin, the thickness of the thermosetting resin sheet of the laminate decorative sheet and 0.8mm to 1.2 mm, 1 the thickness of the cork in the thickness of the thermosetting resin sheet Thing to make 3 times , And the is obtained by the element for counter table material paste over the edge of the laminated veneer from the upper surface of the wood top plate core material.

In the production of the laminated decorative board, the application amount of the emulsion type adhesive resin composition is 200 g / m ^{2 to} 300 g / m ² , the press temperature is 45 ° C. to 70 ° C., and the press pressure is 10 kgf / cm ^{2 to} 30 kgf. / cm ^2, either by setting the pressing time to 3 to 5 minutes, coating weight of 200 g / m ² to 300 g / m ² of adhesive resin composition of emulsion type, cold pressing temperature, pressing pressure 10 kgf / cm ² to 30 kgf / cm ^2, either by setting a pressing time of 5 to 15 minutes, a rubber-based solvent type, synthetic rubber solvent type, the application amount of the adhesive resin composition of the synthetic rubber latex type 500 g / m ² to 800 g / m ^2, to set the pressing temperature ambient temperature, the press pressure 10 kgf / cm ² to 30 kgf / cm ^2, pressing time 30sec to 60sec To manufacturing.

  According to the present invention configured as described above, by regulating the cork density as described above, it is possible to prevent the adhesive from being eaten by the cork, to ensure reliable adhesion, and to prevent cork settling. Insulation and sound absorption effect can be guaranteed.

  In addition, by defining the resin content of the adhesive as described above, the adhesive is prevented from being eaten by the pores of the cork plate, and reliable adhesion to the melamine resin plate or the like is obtained. In addition, by defining the thickness of the melamine resin plate and the like and the thickness of the cork plate as described above, it can be rolled into a cylindrical shape with high flexibility and is easy to carry.

  Furthermore, by specifying the bonding conditions as described above, it is possible to prevent cork settling and enable reliable bonding between various plate materials and the cork, thereby obtaining a laminated decorative board having a heat insulating and sound absorbing effect.

  Next, embodiments of the present invention will be described with reference to the drawings. Table 1 shows a cork plate having a thickness of 2 to 3 mm, 4 to 8 mm, and 9 to 12 mm, and a melamine resin plate having a thickness of 2 mm using a vinyl acetate emulsion type adhesive (manufactured by Aika Industry Co., Ltd., product number A-1400L). The various bonding conditions for obtaining good adhesion are shown in the upper part, the upper part is the bonding condition by hot pressing, and the lower part is the bonding condition by normal temperature pressing.

  Table 2 shows a cork board having a thickness of 1 to 5 mm and a thickness of 6 to 12 mm and a melamine resin board having a thickness of 2 mm using a rubber-based solvent-type adhesive (manufactured by Aika Industry Co., Ltd., product number RQ-V1). This shows various bonding conditions for obtaining good bonding when bonded using a room temperature press.

  Moreover, FIG. 1 shows each condition range and its tendency, with the bonding conditions by hot pressing in Table 1 as the various bonding conditions and the horizontal axis as the cork thickness. FIG. 2 shows each condition range and its tendency, with the bonding condition being the various bonding conditions on the vertical axis and the cork thickness on the horizontal axis. FIG. 3 shows the data in Table 2 in the same manner.

  In FIG. 1, in a certain range of conditions, as the cork becomes thicker, an adhesive with a larger amount of resin is required, the application amount is larger, the press temperature needs to be higher, and the press pressure needs to be gradually lowered. Show. However, the press time hardly changes.

  In FIG. 2, in a certain range of conditions, as the cork becomes thicker, an adhesive with a larger amount of resin is required, the amount of application needs to be increased, the press pressure is gradually lower, and the press time needs to be shortened. Show. In particular, it shows that the condition range of the press pressure is narrow.

  In FIG. 3, the amount of adhesive applied does not change greatly, but the press pressure tends to increase. In the case of adhesion using a rubber-based solvent-type adhesive, adhesion by hot pressing is not suitable because the adhesive will boil.

  Although the melamine resin plate having a thickness of 2 mm was used in the test for the above bonding conditions, it can be understood that the same tendency was observed when the same test was performed on the polyester plate and the plywood having a protruding plate on the surface. It was.

  Based on the above basic data, each of vinyl acetate emulsion type adhesive (manufactured by Aika Industry Co., Ltd., product number A-1400L) and rubber solvent type adhesive (manufactured by Aika Industry Co., Ltd., product number RQ-V1) was used. Then, a 3 mm thick cork board was bonded to a 2 mm thick melamine resin plate and a polyester plate to produce a 30 cm square flooring. It was confirmed that it has good characteristics as a flooring material that also has a sound absorbing effect.

  Similarly, using a vinyl acetate emulsion type adhesive (manufactured by Aika Industry Co., Ltd., product number A-1400L) and a rubber solvent type adhesive (manufactured by Aika Industry Co., Ltd., product number RQ-V1) A 3mm-thick cork board was bonded to a 3mm-thick plywood with a veneer as a raw material, and a 30cm x 180cm flooring was produced. -It was confirmed that it has good characteristics as a flooring that also has a sound absorbing effect.

  Similarly, using a vinyl acetate emulsion type adhesive (product number A-1400L, manufactured by Aika Industry Co., Ltd.), a 0.2 mm thick veneer made of zelkova is bonded to the surface of a 2 mm thick cork board to 90 cm. A trial was made of a × 90 cm wall material and it was examined whether or not it was suitable for the conditions of the wall material. As a result, it was confirmed that the wall material had good characteristics as a heat insulating and sound absorbing effect.

  Next, vinyl acetate emulsion type adhesive (product number A-1400L, manufactured by Aika Industry Co., Ltd.) having a resin content of 50, 35, 30% (30% is a comparative example) and two types of thickness (2, 3 mm) Cork plates A and B, wall thickness of 60 cm × 60 cm in combination of the melamine resin plates of thickness 0.8, 1.0, 1.2, 1.5 mm (1.5 mm is a comparative example) shown in Table 3 The result of having manufactured this sample and confirming about flexibility, sound absorption property, heat insulation, and a bonding state is shown in the lower column of the same table.

表中のコルク板Ａは、天然コルク板、同コルク板Ｂは、平均粒径０．５ｍｍのコルクチップ１００重量部に対し、アクリル樹脂系接着剤３０重量部を配合、十分混練りし上記厚さのシートに成形したものである。なお、アクリル樹脂系接着剤の他にエポキシ、ポリアミド、ポリエステル、ポリウレタン系の接着剤を採用することができる。
また、表中のメラミン樹脂板は、アイカ工業株式会社の商品番号Ｌ４３０７を採用した。

The cork board A in the table is a natural cork board, and the cork board B is prepared by blending 30 parts by weight of an acrylic resin-based adhesive with 100 parts by weight of cork chips having an average particle diameter of 0.5 mm, and kneading them sufficiently. Is formed into a sheet. In addition to the acrylic resin adhesive, epoxy, polyamide, polyester, and polyurethane adhesives can be employed.
Moreover, the product number L4307 of Aika Industry Co., Ltd. was employ | adopted for the melamine resin board in a table | surface.

  As can be seen from Table 3, this example has heat insulation and sound absorption by good adhesion between the melamine resin plate and the cork plate, and is flexible by specifying the thickness of the melamine resin plate and the cork plate. It is possible to obtain a wall material which is good and easy to carry.

  As shown in FIG. 4, the laminated decorative board 11 of No. 1 and No. 3 in Table 3 in Example 4 was pasted from the upper surface 12u to the edge 12e of the counter table core 12 to produce the counter table material 10. However, no hard sound is generated due to the sound absorption effect, and the bottom can be used as the storage bin 13. In the above embodiment, the counter table material is used. However, the counter table material can be widely used as a material such as a table top or a shelf.

  As described above, according to the present invention, the various plate materials and the cork plate are bonded in a good state so as to have both heat insulating properties and sound absorption properties, and the thicknesses of the various plate materials to be bonded and the cork plate are specified. As a result, flexibility can be improved and industrial applications can be expanded.

FIG. 5 is a diagram showing the tendency of bonding conditions by hot pressing in the use of a vinyl acetate emulsion adhesive, where (a) shows the resin content of the adhesive, (b) the coating amount of the adhesive, (c) the press temperature, (d) Is about the press pressure. Similarly, it is a figure showing the tendency of the bonding conditions by room temperature pressing, (a) is about the resin content of the adhesive, (b) is about the coating amount of the adhesive, (c) is about the pressing pressure, and (d) is about the pressing time. is there. The figure which shows the tendency of the adhesion conditions by the normal temperature press in the use of a rubber-based solvent-type adhesive, (a) is about the application amount of the adhesive, and (b) is about the press pressure. Cross section of counter table material (a) 1 and (b) 2

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Counter table material 11 Laminated decorative board 12 Counter table core 12u Upper surface 12e of counter table core Upper surface 13 of counter table core 13 Preparation storage shelf

Claims (4)

Density 0.25 ± 0.03 g / cm ^{3 A} thermosetting resin plate comprising a vinyl acetate emulsion type adhesive resin composition applied to the surface of a cork plate, and comprising a melamine resin plate via the adhesive resin composition A laminated decorative board made by bonding together,
The adhesive resin composition has a resin content of 35 to 65%,
A laminated decorative board that can be rolled into a cylindrical shape in which the thickness of the thermosetting resin plate is 0.8 mm to 1.2 mm, and the thickness of the cork is 1 to 3 times the thickness of the thermosetting resin plate. . A top board material obtained by attaching the laminated decorative board according to claim 1 from the upper surface to the edge of the core for a wooden top board. In the production of the laminated decorative plate according to claim 1 or 2, the coating amount of 200 g / ^{m 2} to 300 g / ^{m 2} of the adhesive resin composition, 45 ° C. to 70 ° C. The pressing temperature, pressing pressure 10 kgf / A method for producing a laminated decorative board, characterized in that cm ^{2 to} 30 kgf / cm ² and a pressing time is set to 3 to 5 minutes. In the production of the laminated decorative plate according to claim 1 or 2, the coating amount of 200 g / ^{m 2} to 300 g / ^{m 2} of the adhesive resin composition, cold pressing temperature, pressing pressure 10 kgf / cm ² to 30kgf / cm ^2, laminated veneer manufacturing method characterized by setting a pressing time of 5 to 15 minutes.

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