JP2010007276A - Floor member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor member capable of preventing a coating in a decorative groove from lifting. <P>SOLUTION: This floor member 1 is constituted by arranging a surface decorative member 4 on a wooden chip resin composite material 3 arranged on a plywood 2, forming the decorative grooves 6 reaching the wooden chip resin composite material from a surface of the surface decorative member, and finishing a surface by coating. The decorative groove is extended in the direction crossing the direction 22 of grain in the uppermost layer 21 being the closest to the wooden chip resin composite material in the plywood. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a floor material that forms a floor surface of a building such as a house.

  The present applicant has proposed the flooring described in Patent Document 1 so far.

  The flooring material described in Patent Document 1 is formed by integrating a surface decorative material on a surface side of a base material such as plywood via a wood powder resin composite, and forming a decorative groove reaching the wood powder resin composite from the surface decorative material. It has been done.

  Wood powder resin composite material is compounded with thermoplastic resin such as polypropylene resin, polyvinyl chloride resin, ABS resin, etc., around 20-70 wt%, and if necessary, inorganic filler, reinforcing material, etc. are added and kneaded. For example, Satoshi Konishi et al., “Wood Plastic Board” Application for Thin Reform Building Materials, Matsushita Electric Engineering Technical Report, May 2004. .

  As described in the above document, a wood plastic board can be produced by extrusion molding a kneaded wood powder resin composite, and the produced wood plastic board is made of polypropylene resin and is made of plywood or MDF. Compared to thermal expansion, the dimensional change under the conditions of high bending strength, low humidity in winter, and high humidity in summer is small in hygroscopic expansion. In addition, it is sufficiently smaller than MDF. In general, in the case of wood, the shrinkage rate is about 0.3 to 0.4%, whereas in the case of wood plastic, the shrinkage rate can be suppressed to about 1/10 of that of wood.

  By using such a wood powder resin composite material for the surface layer, the flooring can maintain the smoothness of the surface, improve crack resistance, scratch resistance, use of furniture with casters and falling of objects The occurrence of scratches and dents due to impacts and the like is less likely to occur, and the surface cosmetic material is prevented from being pushed up and warped by moisture absorption, and further, the gap due to drying and the occurrence of cracks in the surface cosmetic material are suppressed.

In addition, since the decorative groove does not reach the base material, the flooring does not have fuzz that tends to occur when it is formed on a wooden board, and there is little catching of stockings or socks, and a good walking feeling can be realized.
JP 2000-066469 A

  Thus, although it is the said floor material excellent in various characteristics, such as crack resistance, scratch resistance, and dimensional stability, the subject which must be solved by subsequent examination was discovered.

  The surface of the flooring material is generally coated for the purpose of protecting the surface and maintaining the appearance and finishing the surface more beautifully. In the floor material, the decorative groove is formed by groove processing until the decorative groove reaches the wood powder resin composite material from the surface decorative material. If the depth of the decorative groove is shallow, the surface has a weak accent on the design. Therefore, in order to improve the design, the depth of the decorative groove needs to be increased to some extent. Is formed up to wood powder resin composite. When the surface of the floor material thus grooved is finished by painting, the paint adheres to the wood powder resin composite material exposed in the decorative groove. As mentioned above, the main component of the wood powder resin composite is resin, and since the rate of thermal expansion and contraction does not necessarily match the blending components of the paint, the coating film follows the expansion and contraction of the wood powder resin composite by repeated cold heat. It may not be possible to peel off from the bottom of the decorative groove and float up to the surface side. In particular, in a floor heating system, the temperature difference between repeated cold heat is large, and the thermal stress applied to the flooring is large. For this reason, the lift of the coating film as described above is likely to occur.

  This invention is made | formed in view of the situation as mentioned above, and makes it the subject to provide the flooring which can suppress the lift of the coating film in a makeup groove.

  In order to solve the above problems, the present invention provides a surface decorative material on a wood powder resin composite material disposed on a plywood, and reaches the wood powder resin composite material from the surface of the surface decorative material. It is a flooring in which a decorative groove is formed and the surface is painted, and the decorative groove extends in a direction orthogonal to the grain direction of the uppermost layer closest to the wood powder resin composite material in the plywood. It is a feature.

  According to the present invention, since the decorative groove extends in a direction orthogonal to the grain direction of the uppermost layer closest to the wood powder resin composite material in the plywood, the expansion and contraction of the wood powder resin composite material due to repeated cold is suppressed. Thus, the coating film on the surface formed by painting finish can easily follow the expansion and contraction of the wood powder resin composite material, and the lifting of the coating film in the decorative groove is suppressed.

  FIG. 1 is a perspective view and a partial sectional view showing an embodiment of a flooring of the present invention.

  A flooring 1 having a substantially rectangular shape in plan view is formed by laminating a plywood board 2, a plate-like wood powder resin composite material 3 and a decorative sheet 5 as a surface decorative material 4 in order from the bottom up. Has been.

  On the surface of the flooring 1, two decorative grooves 6 are formed at an interval, extending in the short direction of the flooring 1 parallel to the side edges on the short side and crossing between the side edges on the long side. ing. The decorative groove 6 has a depth reaching the wood powder resin composite material 3 from the surface of the decorative sheet 5, does not penetrate the wood powder resin composite material 3, and does not reach the plywood 2. The decorative groove 6 has a V-shaped cross section, but the cross-sectional shape may be a U-shape. The number, length, cross-sectional shape, and the like of the decorative groove 6 can be appropriately set in consideration of the design effect.

  Further, the decorative groove 6 extends in a direction perpendicular to the wood grain direction 22 of the uppermost layer 21 of the plywood 2 closest to the wood powder resin composite material 3 in the floor material 1.

  And the surface of the flooring 1 is finished by painting. The surface of the olefin sheet or the like constituting the decorative sheet 5 can be subjected to primer treatment, for example, and various coatings can be applied to the surface of the flooring 1 with good adhesion, that is, the surface of the decorative sheet 5. Painted.

  Such a flooring 1 can be manufactured as follows, for example.

  A decorative sheet 5 capable of giving a desired appearance such as a wood texture on the plate-like wood powder resin composite material 3 is considered in consideration of the properties of each material, for example, an SBR adhesive or a melamine adhesive. A surface layer material is produced by bonding with an adhesive such as This surface layer material is superimposed on the uppermost layer 21 so that the wood powder resin composite material 3 is arranged on the lower side on the plywood 2 and, for example, urethane-modified vinyl is interposed between the plywood 2 and the wood powder resin composite material 3. Adhesive with an adhesive such as resin adhesive. Thereafter, the decorative groove 6 is formed on the surface of the surface layer material at the depth as described above by groove processing, and then the entire surface including the decorative groove 6 is finished by painting such as urethane coating finish.

  A general purpose plywood 2 is used. The wood powder resin composite material 3 is as described above, and a “wood plastic board” formed into a plate shape can be used.

  Since the flooring material 1 includes the wood powder resin composite material 3 in the surface layer material in the same manner as the previously proposed flooring material, it can maintain the smoothness of the surface, and also has crack resistance and scratch resistance. The use of furniture with casters and the occurrence of scratches and dents due to impacts such as falling objects are less likely to occur, and the decorative sheet 5 is pushed up and warped due to moisture absorption, and the gaps caused by drying are suppressed. The And since the makeup | decoration groove | channel 6 has not reached the base material, there is no fuzz which is easy to occur when forming on a wooden board, there is little catch of stockings and socks, and a favorable walk feeling can be implement | achieved. Further, the floor material 1 has a good appearance in which a three-dimensional effect with a design accent appears by the decorative groove 6 reaching the wood powder resin composite material 3.

  In the flooring 1, as described above, the decorative groove 6 extends in a direction perpendicular to the wood grain direction 22 of the uppermost layer 21 closest to the wood powder resin composite material 3 in the plywood 2. The expansion and contraction in the width direction of the decorative groove 6 of the accompanying wood powder resin composite material 3 is alleviated and suppressed. For this reason, even if the paint adheres to the wood powder resin composite material 3 exposed in the decorative groove 6 after the decorative groove 6 is formed by coating, the formed coating film 7 follows the expansion and contraction of the wood powder resin composite material 3. The coating film 7 is prevented from peeling off from the bottom of the decorative groove 6 and rising to the surface side. Therefore, the floor material 1 has a large temperature difference in repeated cold heat, and the lift of the coating film 7 is sufficiently suppressed even in a floor heating system in which a large thermal stress is applied. The floor surface can be maintained in a good quality state.

  In the present invention, the thickness of the plywood 2, the wood powder resin composite material 3, the surface decorative material 4 and the coating film 7 is not particularly limited, and can be set as appropriate in consideration of the prior art. Also, there is no particular limitation on the materials constituting them and the type of adhesive used for the lamination integration.

  Further, the direction in which the decorative groove 6 extends is not limited to the short direction of the flooring 1 as in the flooring 1 shown in FIG. 1, and is relative to the wood grain direction 22 of the uppermost layer 21 of the plywood 2. As long as the direction is orthogonal, it can be formed to extend in the longitudinal direction of the flooring 1 by adjusting the grain direction 22, and also extends in the longitudinal direction of the flooring 1 and in the lateral direction Can also be formed as a decorative groove 6. Moreover, the length of the decorative groove 6 can also be set as appropriate. Like the flooring 1 shown in FIG. 1, it can be formed across the side edges of the flooring 1 in the longitudinal direction or the short side direction, and can also be partially formed on the flooring 1 in each direction. . The length can be adjusted according to the appearance.

It is the perspective view and partial sectional view which showed one Embodiment of the flooring of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor material 2 Plywood 3 Wood powder resin composite material 4 Surface decoration material 5 Makeup sheet 6 Makeup groove 7 Paint film 21 Top layer 22 Wood grain direction

Claims (1)

  A surface decorative material is arranged on the wood powder resin composite material arranged on the plywood, a makeup groove reaching the wood powder resin composite material from the surface of the surface decorative material is formed, and the surface is finished by painting. A flooring material, wherein the decorative groove extends in a direction perpendicular to the grain direction of the uppermost layer closest to the wood powder resin composite material in the plywood.

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