JP2007191976A - Decorative plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative plate capable of banding a plurality of decoration plates with each other while it is a fitting method facilitating construction and removal and being easily replaced. <P>SOLUTION: When the rear side concave groove section 5 of the other sheet of decorative plate base is fitted to the front concave groove section 4 of one sheet of a decorative plate base 2, the other sheet of the decorative plate 20 is slantly inserted so that the front end 6 on the end side of the rear concave groove section can come into contact with a concave groove bottom 7 of the front concave groove section, and after the point of contact has been made to coincide with the center of a concentric circle in the case the point of contact is fitted, the other sheet of decorative plate is attached in a sheet-like state by rotating the other sheet of the decorative plate with the center of the concentric circle as the fulcrum to form a cross sectional-shape so as to make it possible to be connected. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a decorative plate used for a floor surface or a wall surface of a house or the like, and particularly relates to a decorative plate that can be easily installed and removed by combining a plurality of decorative plates.

  Conventionally, a veneer, a synthetic resin, or a paper decorative sheet is attached to a wooden base material such as a plywood, a medium density fiberboard (hereinafter referred to as MDF), a particle board, or the like on a wall surface or floor surface of a house or the like. A decorative veneer was used. As a method for fitting these decorative plates, a decorative plate having a front surface groove portion and a back surface groove portion in a linear form along both ends of opposite sides of the decorative plate substrate, And the back groove portion are assembled by combining a plurality of decorative plates in a planar shape by combining the front groove portion of one decorative plate substrate and the reverse groove portion of the other decorative plate substrate. It is possible to do that. The decorative board base material is processed by processing (shaving) the ends of the wood base material in the longitudinal direction or the width direction with a tenoner or the like.

  On the other hand, a normal plywood or the like has a laminated structure of several layers, and the intermediate layer which is not the surface layer has a woody grade lowered and sandwiches a layer made of an inexpensive material. However, when the above processing (cutting out) is performed, the material of the intermediate layer needs to be processed so that cutting can be performed to some extent, and conventional inexpensive materials cannot be used. It is possible to use uniform MDF and particle board, but since the strength of MDF and particle board itself is not strong, there is a problem in durability to make it a complicated shape as a fitting part, and a small, simple shape and I had to do it.

  Moreover, even if it is generally said that it is a fitting, the decorative plates of each other are not bound, but are often only covered with each other. Since such decorative panels are independent of each other, it is necessary to bond each other using an adhesive, a tucker, a nail, or the like in the fitting portion. In the case of fixing by such a method, it is necessary to peel (break) such a bond when it is necessary to replace the decorative plate due to some trouble or change with time, which is often troublesome.

On the other hand, as a substitute for a wood-based substrate, a resin-based substrate made of wood flour-containing thermoplastic resin has been used from the viewpoint of water resistance, caster resistance, and impact resistance. The fitting of the decorative board using the synthetic resin can be a free shape without sticking to the shape of the conventional blade. However, products using synthetic resin as a base material are more dimensioned than woody base materials due to temperature changes in the living environment, depending on the thickness of the base material, the form of fitting, and the type and amount of resin used. There was a big change and the handling was difficult.
Further, even if an abstract one-point pattern is provided on the floor surface or the like, the real part cannot be fitted, and it is difficult to rotate the base material into a free pattern floor.
JP-A-10-729228 Japanese Patent Laid-Open No. 11-93356 JP 2003-97011 A

  The present invention has been made to solve the above-mentioned problems, and the problem is that the decorative plates can be easily replaced by binding them together while being a fitting method that is easy to install and remove. It is to provide a decorative board that is possible.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is characterized in that the front surface groove portion and the back surface concave portion are linearly formed along both ends of opposite sides of the decorative board substrate. In the decorative plate having a groove portion, the front surface groove portion and the back surface groove portion are formed by combining the front surface groove portion of one decorative plate substrate and the back surface groove portion of the other decorative plate substrate. In the decorative plate that allows a plurality of decorative plates to be assembled and connected in a planar shape, the front concave groove portion has a curved convex portion on the end-side outer surface, and the rear concave groove portion on the decorative plate substrate-side inner surface A curved concave portion that fits into the groove, a curved concave portion on the inner surface on the end side of the front groove portion, and a curved convex portion that fits on the inner surface on the end surface of the concave groove portion on the back surface. The curved surface to be joined is the end of the back groove portion when the two decorative plates are fitted together and the concave portion of the front groove portion. The cross-section substantially coincides with a concentric circle centered on the contact point on the bottom surface, and the radius of the inner curved surface of the two fitting curved surfaces is the thickness from the bottom surface of the concave groove portion to the bottom surface of the decorative plate substrate. The radius of the outer curved surface of the two mating curved surfaces is equal to the thickness from the end tip of the back groove portion to the bottom surface of the back groove portion, and the surface of the decorative plate base material from the end tip of the back groove portion When the back surface groove portion of the other decorative plate base material is fitted to the front surface groove portion of one decorative plate base material, the end on the end side of the back surface groove portion is the surface concave groove portion. Insert another decorative sheet diagonally so as to contact the bottom of the groove, and match the center of the concentric circle when the contact point is fitted, and then the other decorative sheet with the center of the concentric circle as a fulcrum It is characterized by a cross-sectional shape that can be rotated and assembled into a planar shape so that it can be connected. A decorative plate.

  The invention according to claim 2 is the decorative board according to claim 1, wherein the decorative board substrate is a resin-based substrate made of wood flour-containing thermoplastic resin.

  According to the first aspect of the present invention, when the back groove portion of the other decorative plate base material is fitted into the front groove portion of the single decorative board substrate, the end side tip of the back groove portion is the surface concave portion. Insert another sheet of decorative plate diagonally so as to contact the bottom of the groove of the groove, and match the center of the concentric circle when the contact point is fitted, then place the other decorative sheet of plate on the center of the concentric circle By having a cross-sectional shape that can be connected to a plane by rotating to the center, it is possible to easily perform construction, removal, and single replacement.

  According to the invention of claim 2, the fitting structure has processability, the fitting part of the decorative board base material can be easily cut with a cutter, etc., and maintenance such as replacement of one sheet can be easily performed. It has the effect of becoming

Hereinafter, a decorative board of the present invention will be described in detail with reference to the drawings.
1 to 3 show a cross-sectional structure of an embodiment of the decorative board of the present invention. FIG. 1 shows an end portion having a back groove portion, FIG. 2 shows an end portion having a front groove portion, and FIG. 3 shows a state in which these are fitted.
Fitting portion 1, decorative plate substrate 2, decorative sheet 3, front groove portion 4, back groove portion 5, end tip 6 of the back groove portion, groove bottom surface 7 of the surface groove portion, groove bottom surface of the surface groove portion The contact 8, the concentric circle 9 centered on the contact on the bottom surface of the concave groove portion, the radius 10 of the inner curved surface, the radius 11 of the outer curved surface, and the decorative plate 20 of the present invention.

  The decorative board substrate 2 in the present invention is not particularly limited as long as it has desired processing suitability, and a resin-based substrate made of a thermoplastic resin blended with a wood filler is particularly suitable.

  Examples of the thermoplastic resin include polyolefin resins such as polyethylene, polypropylene, polybutene, polyisoprene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-α olefin copolymer, propylene-α olefin copolymer, Ethylene-ethyl acrylate copolymers and their acid-modified products (copolymerized with unsaturated carboxylic acids or anhydrides for the purpose of improving adhesion), ionomers (metal water of olefin-unsaturated carboxylic acid copolymers) The product can be appropriately selected from Japanese). Moreover, the same kind or different kinds of resins selected from these may be appropriately mixed and used. When different types of resins are combined, it is desirable that they are a combination of resins that are well compatible with each other or that adhere well to each other. If the physical properties after mixing can be maintained by the addition of a solubilizer and / or an adhesive, it can be used.

  As the wood-based filler, basically, it is only necessary to reuse the wood powder from other wood-based base materials, but it is powdery and granular manufactured using natural wood such as thinned wood and waste wood as the main raw material. Or a short fiber filler may be used. In general, it is known that wood is broken by a cutter mill or the like and then pulverized by a ball mill or an impeller mill to form a fine powder (wood powder).

  The mixing ratio of the wood filler is preferably about 10 to 50 parts by weight with respect to 100 parts by weight of the thermoplastic resin. If the amount is less than 10 parts by weight, there is almost no improvement to suppress the dimensional change with respect to the temperature change. If the amount exceeds 50 parts by weight, the degree of freedom of the fitting shape is reduced, and the surface becomes rough and the fitting is adversely affected.

  The average particle size of the wood filler is generally 1 to 200 μm, more preferably 5 to 100 μm. If the average particle size is less than 1 μm, it is difficult to handle, the dispersion state in the resin deteriorates, and the mechanical strength decreases. If the average particle size is larger than 200 μm, the homogeneity, flatness and mechanical strength of the molded product tend to be lowered.

  If necessary, for example, a heat stabilizer, an acid neutralizer, an ultraviolet absorber, a light stabilizer, a colorant such as a pigment or a dye, an organic or inorganic filler other than wood, an antistatic agent, and a lubricant. In addition, one or more additives such as a nucleating agent, a foaming agent, a flame retardant, an antiblocking agent, a light scattering agent for making translucent, and a gloss adjusting agent may be added.

  The method of kneading the thermoplastic resin and the wood-based filler is not particularly limited, but a method of kneading with a Banbury mixer and pelletizing with a pelletizer or a method of mixing and pelletizing with a twin-screw extrusion kneader is common. It is. Further, the wood filler and the resin may be kneaded simultaneously with the molding of the thermoplastic resin. In addition, if the wood-based filler has a high moisture content, foaming may be caused by evaporation of moisture during molding. Therefore, the moisture content should be kept at 8% or less by drying in advance with a dryer or hopper dryer before kneading. Is desirable.

  The thermoplastic resin containing the wood filler thus obtained can be obtained by molding into an appropriate shape by an appropriate molding method. For example, it may be appropriately selected from various known molding methods such as compression molding method, extrusion molding method, profile extrusion molding method, injection molding method, injection compression molding method, transfer molding method, etc. according to the shape and dimensions of the molded product. . Further, after extrusion into various shapes, it may be processed with a tenoner or a router.

  90 parts by weight of homopolypropylene resin, 10 parts by weight of maleic acid-modified homopolypropylene resin, and wood-based filler (wood powder having an average particle diameter of 20 μm, which is obtained by breaking wood with a cutter mill and grinding it with a ball mill) Weight parts were mixed and pelletized by a twin-screw extrusion kneader to prepare a woody resin composition. A decorative board substrate having the shape shown in FIGS. 1 to 3 was produced from this wood resin composition by a profile extrusion molding method.

<Applicability for construction and mating>
The decorative board substrate obtained as described above was applied onto a structural plywood having a thickness of 24 mm using an acrylic resin emulsion adhesive (“Bond CK51”; manufactured by Konishi Co., Ltd.).
As a result, it was possible to easily align, and once fitted, the fitting did not come off, it was possible to fit one after another, the working speed was fast, and the workability was excellent.

<Maintenance aptitude>
Moreover, the test which replace | exchanges only one sheet from the fitted decorative board was done. The fitting part can be easily cut with a cutter and can be easily replaced.

<Environmental aptitude>
Further, a cold heat repetition test (5 ° C. for 24 hours and 40 ° C. for 24 hours was repeated 10 times) was performed. Although there was shrinkage of the flooring, there was no significant change.

It is explanatory drawing which shows the structure of the back surface recessed part cross section of one Example of the decorative board of this invention. It is explanatory drawing which shows the structure of the surface recessed part cross section of one Example of the decorative board of this invention. It is explanatory drawing which shows the structure of the fitting state of one Example of the decorative board of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Fitting part 2 ... Decorative plate base material 3 ... Decorative sheet 4 ... Surface groove part 5 ... Back surface groove part 6 ... End side tip of back surface groove part 7 ... Bottom surface of groove part of surface groove part 8 ... Concave part of surface groove part Contact point on bottom surface of groove 9. Concentric circle centering on contact point on bottom surface of groove portion of surface groove portion 10. Radius of inner curved surface 11. Radius of outer curved surface 20.

Claims (2)

A decorative plate having a front surface groove portion and a back surface groove portion in a linear manner along both ends of opposite sides of the decorative plate substrate,
The front surface groove portion and the back surface groove portion are formed by assembling a plurality of decorative plates into a planar shape by combining the front surface groove portion of one decorative plate substrate and the reverse surface groove portion of another decorative plate substrate. In decorative panels that can be connected and connected,
It has a curved convex portion on the outer surface on the end side of the surface concave groove portion, and has a curved concave portion fitted to the inner surface on the decorative plate substrate side of the concave groove portion on the back surface,
It has a curved concave portion on the inner surface on the end side of the groove portion on the front surface, and a curved convex portion that fits on the inner surface on the end side of the concave portion on the back surface,
The two fitting curved surfaces have a cross section that substantially coincides with a concentric circle centering on a contact point between the end of the back groove portion when the two decorative plates are fitted and the bottom surface of the groove portion of the front groove portion. ,
The radius of the inner curved surface of the two mating curved surfaces is the thickness from the bottom surface of the groove portion of the front surface groove portion to the bottom surface of the decorative plate substrate and from the end of the back surface groove portion to the bottom surface of the groove portion of the back surface groove portion. Equal to the thickness of
The radius of the outer curved surface of the two curved surfaces to be fitted is equal to the thickness from the end of the back groove portion to the surface of the decorative board substrate,
When the back groove portion of the other decorative plate base material is fitted into the front groove portion of one decorative plate base material, the end of the back groove portion comes into contact with the bottom surface of the concave groove portion of the front surface groove portion. Insert the other decorative plate diagonally and match it with the center of the concentric circle when the contact is fitted, then rotate the other decorative plate around the center of the concentric circle to form a plane A decorative board characterized by having a cross-sectional shape that can be assembled and connected.   2. The decorative board according to claim 1, wherein the decorative board substrate is a resin-based substrate made of a wood powder-containing thermoplastic resin.

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