JP2003247327A - Cosmetic materials and building interior materials - Google Patents

Abstract

(57) [Summary] [Problem] Even if the cosmetic material expands and contracts, the gap does not open, it looks good, the base material is not exposed, it is difficult for garbage to collect, and there is no lifting of the cosmetic material, There has been a demand for a decorative material and a building interior material having a shape and a structure that can be easily constructed during construction. A decorative material in which a substantially rectangular plate-shaped body has a connection structure on a long side and a main material is a resin, wherein one short side has a protrusion formed in parallel with the short side and a short side. Another aspect of the present invention is to provide a decorative material in which a cutout paired with the protrusion is formed in parallel on a short side of the other side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building interior material such as a floor material, a wall material, a ceiling material and a decorative material used therefor,
In particular, the present invention relates to a decorative material having a shape structure that is easy to construct and an interior building material used for the surfaces of floors, walls, ceilings, etc. assembled using this decorative material.

[0002]

2. Description of the Related Art Conventionally, as a decorative material for the above-mentioned various uses, a decorative paper or a decorative sheet obtained by designing a natural veneer, paper or a synthetic resin sheet by printing on a wood base material such as plywood or fiberboard. It is often used by sticking together.

When these decorative materials are used as surface materials for structural materials such as floor materials, wall materials, and ceiling materials, floor surfaces (floor structural material surfaces), wall surfaces (wall structural material surfaces), and ceiling surfaces are used. A plurality of decorative materials are laid flat one by one so as to be in contact with a structural material surface such as (ceiling structural material surface), and the end portions of the decorative materials are sequentially fitted to each other, connected and fixed, and spread. Are making interior materials for construction.

In the conventional laying method by connecting construction of such decorative materials, as shown in the side view of FIG. 4 (a), a concave portion 1a is formed at one end of the decorative material P formed of the base material 1 as appropriate. And a convex portion 1b that can be fitted into the concave portion 1a is provided at the other end portion opposite to the concave portion 1a. As shown in the side view of FIG. The concave portion 1a at the end and the convex portion 1b at the other end are abutted sideways in the lateral direction in the direction of the arrow, and the concave portion 1a and the convex portion 1b are fitted to each other to fix them together. I was trying to spread it.

Further, relatively little skill is required when laying a decorative material (or a decorative plate) on a construction surface such as a floor surface, a wall surface, or a ceiling surface by connecting construction to perform assembly or mounting construction. In order to facilitate connection and construction, the surface material groove and the back surface groove are linearly formed along the opposite ends of the decorative material base material on the base material surface at one end and the base material back surface at the other end, respectively. A decorative material that includes a groove portion, and combines a plurality of decorative materials into a planar shape by connecting a front surface concave groove portion of one decorative material and a back surface concave groove portion of another decorative material to connect them together. , An engaging protrusion is provided on each of the inner surface of the front end portion of the outer end convex portion of the one decorative material on the surface concave groove portion side and the inner surface of the other end portion of the outer end convex portion of the decorative material on the rear surface concave groove portion side Prepare,
An outer end convex portion which constitutes a back surface concave groove portion of another decorative material is fitted into the front surface concave groove portion of one decorative material from above, and the surface concave groove portion of the single decorative material is fitted. The outer edge convex portion to be formed is closely inserted into the concave groove portion of the back surface of the other one of the decorative materials, and is locked by the engaging protrusions to assemble a plurality of the decorative materials in a planar shape. It was also considered that it would be possible to construct a building interior material by connecting and constructing.

However, there are some methods of assembling in the direction of the short side, which is not the assembling direction.

For example, as shown in FIG. 8, the cross sections of the decorative materials P are simply attached to each other on the structural material surface 17.
The reason why such assembling is not performed is that such a decorative material is generally formed continuously while being extruded in the long side direction, so that processing in the short side direction was not considered.

For this reason, when connecting and constructing, as shown in FIG. 8, the decorative materials P are butted against each other on the structural material surface 17 from the short side direction and simply joined together without any gap.

Therefore, although they are closely joined without a gap, they shrink or expand depending on environmental conditions.

In this case, when a gap is generated between the decorative materials due to shrinkage, the base material that is the structural material surface appears, and that portion is not only unsightly and unsightly, but also partial sunburn and deterioration of the base material that is the structural material surface. There were not a few cases in which it was caused to occur or dust was accumulated in the gap.

On the other hand, when expanded, the structure has no escape of the decorative material on the structure material surface 19 side or in the extending direction.
As a result of the expansion, a phenomenon has occurred in which the decorative materials P are raised to each other. For this reason, for example, when it is applied to a floor and used as a building interior material, there are obstacles such as poor walking sensation.

In order to prevent such rising,
As shown in FIG. 8, it is necessary to deliberately remove the gap 19 during construction, but this not only causes the gap 19 between the decorative materials to occur in the construction state, but also widens due to shrinkage and the area where the structural material surface appears. Is not only clunky and unsightly, but the degree of partial sunburn and deterioration of the surface of the structural material increases, and the number of cases where dust and the like accumulate in the gap increases.

Moreover, it is necessary for the builder to adjust and provide an appropriate gap 19 at the time of construction, unlike mere joint construction.

Therefore, in such a construction, it is not easy to always provide an appropriate gap, and obstacles such as rising and a large gap occur in a portion where the proper construction is not performed. For this reason, for example, when it is applied to a floor and used as a building interior material, there are obstacles such as poor walking sensation.

The expansion and contraction of such a decorative material changes depending on the lapse of time after the construction, but in many cases, it depends on the temperature change more than that, and the temperature and the environment are affected by the use of the decorative material. It was difficult to keep it constant, and it was practically difficult to prevent expansion and contraction.

As shown in the side view of FIG. 9 (a), the concave portion 21a is appropriately formed on one end of the decorative material P formed of the base material 1 as the assembly in the short side direction, which is not another assembly direction. And a convex portion 21b that can be fitted in the concave portion 21a is provided at the other end portion that faces the end portion of the decorative material P, as shown in the side view of FIG. 9B. The concave portion 21a and the convex portion 21b at the other end are abutted from the side in the lateral direction sequentially in the direction of the arrow, and the concave portion 21a and the convex portion 21b are fitted to each other to form the convex remaining portion 21c. There is also a method in which the convex portions 21b are sandwiched and fixed by means of connecting and fixing so as to be spread.

However, even with this method, the problem of expansion and contraction due to heat or the like cannot be solved after all, as in the simple attachment.

Further, in this method, the convex portion 21
The thickness of b and the convex remaining portion 21c became thin, and as a result, problems such as breakage were likely to occur during the process of assembling or due to expansion and contraction after assembling.

[0019]

The object of the present invention is to lay a decorative material, which is a concept including a decorative plate, on a construction surface such as a floor surface, a wall surface, or a ceiling surface by connection construction. As a result of assembly and installation, even if there is expansion and contraction of the cosmetic material, no gap opens, it looks good, the base is not exposed, dust is hard to collect, and the cosmetic materials do not rise up. It is an object of the present invention to provide a decorative material having a shape structure that can be easily constructed without requiring a relatively high level of skill in the construction and a building interior material resulting from the construction.

[0020]

According to the present invention, as described in claim 1, in a decorative material in which a substantially rectangular plate-shaped body has a connecting structure on a long side and a main material is a resin, The decorative material is characterized in that a protrusion is formed on one side in parallel with the short side, and a cutout paired with the protrusion is formed on the other short side in parallel with the short side. Is provided.

According to a second aspect of the present invention, the projection has a top surface that is flush with the general top surface of the outer rectangular plate, and the cutout has a thickness of the projection. The decorative material according to claim 1, wherein the cutout portion has the same depth as the cutout portion.

Further, as described in claim 3, the thickness of the protruding portion is thicker than the remaining thickness of the decorative material provided with the notch, and the decorative material according to claim 2 is provided. It is a thing.

According to a fourth aspect of the present invention, the ratio of the thickness of the protruding portion to the remaining thickness of the decorative material provided with the cutout portion is between 2: 8 and 8: 2. Claim 2
Alternatively, the cosmetic material according to item 3 is provided.

Further, as described in claim 5, the length of the protrusion and the length of the notch are longer than 10 mm, and the cosmetic material according to claim 2, 3 or 4 is provided. To do.

Further, as described in claim 6, the short side end portion of the common upper surface constituted by the general upper surface and the surface flush with the general upper surface has a curved shape. The present invention provides the decorative material according to any one of items 1 to 5.

According to a seventh aspect of the present invention, there is provided the decorative material according to the sixth aspect, wherein the curved surface has a radius of curvature of 0.5 to 5 mm.

Further, as described in claim 8, the decorative material has a structure of a base material alone or a structure in which a decorative sheet is provided on the surface of the base material alone. A cosmetic material is provided.

Further, as described in claim 9, the connection structure has linear surfaces along opposite end portions on a base material surface at one end and a base material rear surface at the other end, respectively. The structure is provided with a recessed groove portion and a back surface recessed groove portion, and is a structure that can be connected and constructed by combining a front surface recessed groove portion of one decorative material and another back surface recessed groove portion of a decorative material. A cosmetic material according to any one of claims 1 to 7 is provided.

Further, as described in claim 10, the inner surface on the surface concave groove side of the outer end convex portion tip portion of the one decorative material and the outer end convex portion tip portion of the other decorative material portion. An engaging protrusion is provided on each of the inner surface on the side of the rear surface groove portion, and the outer end convex portion that constitutes the rear surface groove portion of the other cosmetic material is fitted into the front surface groove portion of one decorative material from above. And 1
A plurality of outer edge convex portions forming the front surface groove portion of one decorative material are closely inserted into the back surface concave groove portion of the other one cosmetic material, and are locked by the engaging protrusions. 10. The decorative material according to claim 9, wherein the decorative material is assembled in a planar shape so that connection can be performed.

Further, as described in claim 11, the decorative materials according to any one of claims 1 to 10 are provided with a gap having a shorter interval in the short side direction than any length of the protrusion and the notch. The present invention provides a building interior material characterized by being assembled.

Further, as described in claim 12, the gap is 0.3 to 5 mm.
The above-mentioned building interior material is provided.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a decorative material, which is a concept including a decorative board of the present invention, will be described below in detail with reference to a side view shown in FIG.

In this decorative material P, a projecting portion is formed on one side of the short side in parallel with the side, and a cutout portion paired with the projecting portion is formed on the other side of the short side parallel to the side. This decorative material P in which is formed has a surface concave groove portion 2 of the base material 1 which constitutes one decorative material P and a rear surface concave groove portion 4 of the base material 1 which constitutes another one decorative material. By combining the two or more decorative materials P in the long-side direction, the decorative materials P are sequentially assembled in a planar shape and connected.

For example, in the case of a structural member such as a flooring made of a thermoplastic resin having a substantially rectangular plate shape, one pair or two pairs of opposite two sides, which are the short sides of the rectangular plate, are shown. On one side, a notch having an L-shaped cross section is formed on the lower surface in parallel with the side, and an upper projection whose upper surface is flush with the general upper surface of the rectangular plate-like body on the notch. And a notch having an L-shaped cross section with the same depth as the thickness of the upper protrusion is formed on the upper surface at the other side in parallel with the other side, and below the notch. A lower projection is formed whose lower surface is flush with the general lower surface of the rectangular plate, and the width of the upper projection is wider than the width of the lower projection.

The thickness of the protrusion may be thicker than the remaining thickness of the decorative material provided with the notch, and this configuration is more preferable.

The ratio of the thickness of the projections to the thickness of the residual material of the decorative material provided with the notches may be between 2: 8 and 8: 2, and this structure is more preferable.

The length of the protrusion and the length of the notch may be longer than 10 mm, and this structure is more preferable.

The short side end portion of the common upper surface, which is composed of the general upper surface and the surface flush with it, may have a curved surface shape, and this structure is more preferable.

The method of adhering the base material and the decorative sheet is not limited, but, for example, an adhesive layer 21 made of an adhesive or an adhesive is provided on the back surface of the decorative material P, for example, the back surface of the base material 1 in contact with the construction surface to form a structural material. It is designed such that it can be adhesively fixed to a construction surface which is a surface.

On the other hand, the other long side is, for example, as shown in FIG. 3 (a), the decorative material P is formed along the both ends of the long side facing each other of the base material 1 for the decorative material, and the end of the one long side. A linear surface concave groove portion 2 is formed on the surface of the base material at one portion, and a linear rear surface concave groove portion 4 is formed on the rear surface of the base material at the end of the other long side.

The surface recessed groove 2 formed along the end of one long side of the plate-shaped base material 1 has an upward protruding outer end at the edge of the end of one long side. 3 is formed.

Further, the back surface recessed groove portion 4 formed along the edge of the end of the other long side of the plate-shaped substrate 1 faces downward at the edge of the end of the other long side. It is configured by forming the outer end convex portion 5 of.

In this decorative material P, a combination of the front surface concave groove portion 2 of the base material 1 which constitutes one decorative material P and the rear surface concave groove portion 4 of the base material 1 which constitutes another one decorative material are combined. Due to
Two or a plurality of decorative materials P are sequentially assembled in a planar shape in the long side direction and connected to form a building interior material.

FIG. 3B shows two or more decorative materials P.
FIG. 5 is a side view of a decorative material that is sequentially assembled in a plane shape in the long side direction and connected, and FIG. 5 is an enlarged side view of a connecting portion in the long side direction. Outer convex part 3
The inner surface on the side of the front surface groove portion 2 at the tip end of the front end portion and the inner surface on the side of the rear surface groove portion 4 at the end portion of the outer end protrusion 5 in the long side direction of the other piece of decorative material are fitted into each other by concavo-convex fitting. It is provided with engaging projections 3a, 5a which are engaged in a manner.

FIG. 3B shows two or more decorative materials P.
Is a side view in the long side direction of the decorative material, which is sequentially assembled and connected in a planar manner, and FIG. 5 is an enlarged side view of the connecting portion, which is at one end of the base material 1 of one decorative material P. Outer end convex portions 5 forming the rear surface concave groove portion 4 of the base material 1 of the other (different) piece of the decorative material P are sequentially fitted in the front surface concave groove portion 2 from the upper side to the lower side in the arrow direction. It is supposed to be combined.

Then, another (different) one piece of the decorative material P
Inside the rear surface groove portion 4 of the base material 1 of
The outer end protrusions 3 forming the surface recessed groove portions 2 of the base material 1 of the sheet of decorative material P are inserted and fitted.

At this time, the engaging projections 3a of the outer end convex portion 3 and the engaging projections 5a of the outer end convex portion 5 are closely engaged with each other to maintain the connection, and the cosmetic material once connected. P and P can be separated if an external force is applied to separate them, but the connection holding state is not easily released.

In the decorative material P of the present invention, the inner surface of one of the decorative materials P facing the inner surface on the outer end convex portion 3 side of the surface concave groove portion 2 and the outer end of the other decorative material P facing the inner surface. Convex part 5
A gap 6 having a predetermined distance d ₂ is provided on the inner surfaces facing each other with the outer surface.

In addition, in the laying method by connection construction in the long side direction, as shown in the side view of FIG. 4A, the concave portion 1 is formed at one end of the decorative material P formed by the base material 1 as appropriate.
a, the concave portion 1a is provided at the other end opposite to the concave portion 1a.
Each of which is provided with a convex portion 1b that can be fitted inside,
As shown in the side view of (b), the concave portion 1a at one end of the decorative material P and the convex portion 1b at the other end thereof are concaved by laterally abutting each other in the lateral direction in the arrow direction. The part 1a and the convex part 1b may be fitted together so as to be fixedly connected and spread.

FIG. 6 is a side sectional view in the long side direction for explaining another embodiment of the decorative material P of the present invention.

The method of adhering the base material to the decorative sheet is not limited, but for example, the back surface of the decorative material P (for example, the back surface of the base material 1 in contact with the construction surface) is provided with an adhesive layer 21 made of a pressure sensitive adhesive or an adhesive to form a structure. It can be adhesively fixed to a construction surface which is a material surface.

The radius of curvature of the curved surface is 0.5 to
It may be 5 mm, and this configuration is more preferable.

In the decorative material P of the present invention, for example, a decorative sheet 11 is laminated on the surface of the base material 1 for decorative material as shown in FIG.

As shown in FIG. 6, the base material 1 for decorative material can be provided with a base material internal structure portion 7 such as a foam layer made of a foaming agent or a filling layer made of a filler inside the structure of the base material 1. .

FIG. 7 is a side sectional view for specifically explaining an example of the decorative material base material 1 and the decorative sheet 11 laminated on the surface of the base material 1.

For example, as shown in FIG. 7, the base material 1 for decorative material is obtained by applying a foaming agent to a part or all of the resin-based base material 1 mainly composed of synthetic resin, as shown in FIG. By forming the bubbles 8 in layers on the back surface side, front surface side, or intermediate layer of the base material 1, or by forming the bubbles 8 in a dispersed manner over the entire base material 1, the base material 1 is formed on the base material 1. Elasticity (cushioning property) may be imparted to it.

Although not particularly limited, a decorative sheet such as a vinyl chloride sheet, an olefin sheet, a veneer, or a paper, which has a design such as wood grain or an abstract pattern, is preferable, but it is composed only of a base material for a decorative material. It doesn't matter.

For example, in the decorative sheet 11, as shown in FIG. 7, a decorative pattern ink layer 13 is provided on the surface of the colored base sheet 12 by printing, and the decorative pattern ink layer 13 is formed on the surface of the colored base sheet 12. More transparent protective layer 14 (sheet,
A film, a coating layer) is formed, the transparent protective layer 14 is coated with the top coat layer 15, and then the embossed portion 16 is appropriately formed on the surface thereof, if necessary.

Then, as shown in FIG. 7, the decorative sheet 11 is laminated on the surface of the base material 1 to complete the decorative material P of the present invention.

The base material 1 used in the decorative material P of the present invention is preferably a thermoplastic resin as the main material. This is because an appropriate degree of elasticity is obtained, which facilitates fitting and fixing and removal, and the fitting cannot be easily disengaged by external force during use in the fitted state.

In this case, a resin molded body using a molten resin material may be used, a resin molded body of a hot press type in which the resin material is press molded using a hot pressing means, or a resin material molded using a cutting means. It may be a resin molded body that is cut and molded, but as its manufacturing method (molding method), it is manufactured by an injection molding method, a hot press molding method, a profile extrusion molding method, a cutting method, a mold casting method, or the like. It is common to do.

The thermoplastic resin material used for the base material 1 is preferably a polyolefin resin such as polypropylene or polyethylene.

This is because a polyolefin resin is preferable as the resin used for the base material in order to obtain appropriate bending stress and restoration properties. With a hard resin such as polystyrene or polyester, a large force is required to open the fitting part, and at the same time, there is poor restorability when the fitting part opens too much, and it may come off. When the composite structure is a mixture of wood fillers such as wood powder, the strength and physical properties can be adjusted by adjusting the mixture quantitatively or positionally.For example, bending by increasing the wood powder content. It is preferable because the stress can be increased.

The base material 1 used for the decorative material P is a molding material for the base material 1, in addition to a thermoplastic resin material such as polypropylene as a main material, a wood-based filler such as wood powder. Can be mixed and used as a product.

In this case, the mixing ratio is 70% to 50% of the thermoplastic resin and 30% to 50% of the wood powder.
It is desirable to take into consideration dimensional stability, bending strength, machinability, etc.

As the decorative material P, a cushioning property can be imparted by providing a foam layer inside the resin layer with a foaming agent or a filler.

As the base material 1 used for the decorative material P, a base material in which the whole or a part of the base material is foamed can be used.

This is because by bending the resin of the base material to form a composite structure of resin / foaming (voids), it is possible to reduce bending stress while maintaining appropriate strength and physical properties.

The base material 1 of the decorative material P of the present invention is
It may be a resin molded product made of a thermoplastic resin, or may be a wood resin molded product containing a thermoplastic resin and a wood-based filler. A thermoplastic resin of the same type as the thermoplastic resin of the resin molded body or a decorative sheet 11 mainly composed of the thermoplastic resin is laminated, or a thermoplastic resin of the same type as the thermoplastic resin contained in the wood resin molded body. A decorative sheet mainly composed of is laminated.

The wood resin molding of the base material 1 may or may not have a wood filler-containing part in part, or may have a wood filler-containing part in whole or in part. At least.

The average particle size of the wood-based filler of the base material 1 is appropriately 1 to 200 μm, and the mixing ratio of the wood-based filler in the portion containing the wood-based filler is , With respect to 100 parts by weight of the thermoplastic resin,
Suitably 10 to 500 parts by weight.

The base material 1 of the decorative material P of the present invention is a foamed resin foamed product which is formed of a thermoplastic resin molding material or a molding material containing a thermoplastic resin and a wood-based filler. Alternatively, a thermoplastic resin of the same type as the thermoplastic resin of the resin foam molded article or a decorative sheet mainly composed of the thermoplastic resin is laminated on the surface of the wood resin foam molded article, or the wood resin foam molded article is laminated. A decorative sheet mainly composed of a thermoplastic resin of the same type as the contained thermoplastic resin is laminated.

The wood resin foam-molded article as the base material 1 of the decorative material P of the present invention may have a portion containing a wood-based filler in at least a part thereof, or may be dispersed in the whole and made into a wood-based material. It may contain a filler.

In this way, when a base material made of a wood resin molded product or a wood resin foam molded product is used for the decorative material, the base material itself is not attached to the decorative material even if the decorative sheet is not laminated on the surface of the base material. This is preferable because it can give a visual and tactile wood texture.

The average particle size of the wood filler is 1
˜200 μm is appropriate, and the blending ratio of the wood-based filler in the portion containing the wood-based filler is preferably 10-500 parts by weight with respect to 100 parts by weight of the thermoplastic resin. .

The resin foam-molded body or the wood resin foam-molded body of the base material 1 of the decorative material P of the present invention may partially have a foamed portion, or the whole is foamed. May be.

The expansion ratio of the resin foam molded body or the wood resin foam molded body of the base material 1 of the decorative material P of the present invention is
1.1 to 1 from the viewpoint of proper cushioning properties as a cosmetic material
About 0.0 times is appropriate.

As the thermoplastic resin used for the resin foam molding or the wood resin foam molding of the base material 1 of the decorative material P of the present invention, a polyolefin resin such as polypropylene or polyethylene is suitable.

With respect to the decorative sheet 11, when the decorative pattern (the pattern ink layer 13) is applied to the sheet 11, various patterns such as wood grain design, abstract pattern, cork pattern, marble pattern, solid color, etc. It is also possible to use a variety of other patterns that have transparency, and consideration can be given to selecting a pattern that makes the gaps less noticeable.

When a decorative sheet mainly composed of a thermoplastic resin of the same type as the thermoplastic resin of the base material is used as the decorative sheet, there is no need to separate the base material and the decorative sheet, and it can be easily recycled. There is an advantage that becomes possible.

Further, particularly in the case of using a polyolefin resin as the thermoplastic resin, it is possible to incinerate waste materials which are inexpensive and excellent in workability and which are not suitable for recycling depending on the usage mode.

Further, in the constitution in which the decorative sheet mainly composed of the thermoplastic resin similar to the above-mentioned thermoplastic resin is laminated on the surface of the base material, the workability such as cutting and nailing is excellent,
It is preferable because high decorativeness can be obtained by the decorative sheet.

Lastly, the shape of the protrusions and the shape of the notches of this decorative material are simple rectangles in processing, and they can be easily combined to deal with expansion and contraction of the decorative material. In terms of relationships, it is easier to consider the design such as making the seams less noticeable by using a curved surface configuration.
It can be appropriately selected depending on the application such as the part to be used.

Further, such a decorative material may be assembled with a gap having a distance shorter than any length of the protrusion and the notch in the short side direction, and may be the structure of the structural member. This configuration is more preferable.

Particularly, the gap may be 0.3 to 5 mm, and this constitution is more preferable.

In the case of this construction, there is a method of directly adhering the base material layer to the substrate, but a cushion layer such as foamed polyethylene may be provided in order to impart cushioning properties. The thickness does not matter, but 2-3 m
m is preferable.

The method of fixing the base material layer and the base is not particularly limited, but a double-sided tape or the like may be used as long as it can be adhesively fixed to the construction surface by using an adhesive or an adhesive. I do not care.

The clearance L1 should be provided with an appropriate clearance. When the thermoplastic resin of the base material layer contracts due to environmental conditions, the clearances L1 and L3-L2 may change. When this clearance changes, L1 and L3-
L2 needs to be provided with a clearance of about 0.3 mm to 5 mm.

However, since L1 appears on the surface in terms of design, too large a clearance cannot be taken, dust is easily clogged, and there is a problem that it is uncool.

If the clearance between L3 and L2 is opened too much, bending and bending will occur and the walking feeling will be deteriorated. In some cases, the base material layer may crack.

Further, in order to obtain an appropriate clearance for L1, it is necessary to take an appropriate R so that the joint does not appear to be too empty in appearance, which is not preferable.

Although not particularly limited, 0.5 mmR <R <5R is suitable depending on the clearance of L1.

The ratio of the thicknesses T1 and T2 and the thickness are not particularly limited, but 2 mm <T1 + T2 <10 mm and the composition ratio of 2: 8 <T1: T2 <8: 2 are suitable.

If T1 and T2 are too thin, cracking is likely to occur, which is not preferable.

[0095]

Example 1 An olefin sheet having a total thickness of 0.16 mm and a hard coat (UV coat 20 μm) on its surface was used as a decorative sheet.

In order to bond the decorative sheet and the base material layer, PU
R adhesive (moisture-curing hot melt: RAKALL J
U-6574L (manufactured by Nippon Fuller Co., Ltd.) was used. The coating amount is about 60 μm.

As the base material layer, homopolypropylene 70
%, Wood flour 30%, and 3% methabrene and 1% foaming agent as external fillers.

For the base material layer, foamed polyethylene (High Ethylene S EF1003K: manufactured by Hitachi Chemical Co., Ltd.) was used as a cushion layer. The expansion ratio of expanded polyethylene is 2 times. The thickness was 2 mm.

A double-sided tape (# 810 double-sided tape (manufactured by Dainippon Ink and Paper Co., Ltd.)) was used as a method for stopping the base material layer and the base, and the work was carried out at ordinary room temperature (10 ° C. to 25 ° C.).

The distance L1 is 1 mm and the length L2 is 7 m.
m, length L3 is 10 mm, thickness T1 is 2 mm, thickness T2
Is 4 mm and the radius of curvature R is 1.5 mm.

(Comparative Example 1) Using the same material and layer structure as in Example 1, only the short sides were cut off, and the layers were closely attached.

(Comparative Example 2) Using the same material and layer structure as in Example 1, the short side was cut off and the interval was 1 mm.

(Experiment) The environmental test was conducted in an environment of 50 ° C. to 0 ° C. After the construction, under the condition that the surface temperature of the floor becomes 50 ° C., the base material layer is about 0.
It became larger by 1 to 0.5%.

As a result, in Example 1, the clearance was narrowed to 0 mm, but the floor material did not rise from the base.

In Comparative Example 1, there was no clearance, and there was no escape area for the stress of the base material layer, and as a result, it was raised from the base.

Next, even under the environment of 0 ° C., the same value of 0.1 is obtained.
Shrink about 0.5%.

In Example 1, the clearance of L1 is 2 m.
It was about m, but there was no big problem because the upper part and the lower part were overlapped.

In Comparative Example 2, the overlapping portion of the upper and lower strips did not come off, but the degree of overlapping became small and it was likely to come off. Further, in order to obtain an appropriate clearance for L1, it is necessary to take an appropriate R so that the joint does not seem to be too empty.

Furthermore, in Comparative Example 2 at room temperature, there is a problem that dust is likely to be clogged, and it is uncool.

[0110]

According to the present invention, even if a gap is generated between the decorative materials due to shrinkage, the base does not appear and the aesthetic appearance is maintained. Therefore, the underlying portion was not exposed, there was no sunburn or deterioration, and dust and the like were less likely to collect in the gap.

On the other hand, the decorative materials do not stick to each other even when they are expanded, and the walking feeling is good.

Therefore, in order to prevent such rising, it is not necessary to make a gap during the construction, and it is possible to construct without considering shrinkage or expansion.
Therefore, it is no longer necessary for the builder to make adjustments.

When the decorative material or the structural material of the laying surface is scratched or soiled due to the passage of time after construction, a part of the laid decorative material can be easily removed and replaced. By inserting a spatula etc. into the gap between the edges of the decorative material and lifting the edge of the decorative material, you can easily remove and replace only the decorative material you want to replace. Therefore, it can be easily connected just by placing it on the end of another decorative material, and there is an effect that workability and work efficiency can be greatly improved.

Further, since the base material of the decorative material of the present invention is simple and sufficiently effective, it is possible to process it simply by cutting the upper part or the lower part of the short side end portion, which improves productivity. Shows excellent effects.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a short side direction of a decorative material of the present invention.

FIG. 2 is a side view for explaining connection construction in the short side direction of a decorative material different from that of FIG. 1 of the present invention.

FIG. 3 (a) is a side view showing an embodiment of the decorative material of the present invention in the long side direction, and FIG. 3 (b) is a side view for explaining the connection construction of the decorative material of the present invention.

FIG. 4 is a side view for explaining connection construction in the long side direction of a decorative material different from that of FIG. 3 of the present invention.

FIG. 5 is an enlarged side view of a connecting portion in the long side direction of the decorative material of the present invention.

FIG. 6 is a side view illustrating an example of the internal layer structure of the decorative material of the present invention.

FIG. 7 is a schematic side sectional view illustrating a layer structure and a laminate of a base material and a decorative sheet in the decorative material of the present invention.

FIG. 8 is a side view for explaining a conventional decorative material and connection construction in the short side direction thereof.

FIG. 9 is a side view for explaining a connection construction in the short side direction different from the conventional FIG.

FIG. 10 is a side view for explaining connection construction in the short side direction, which is different from the conventional FIGS. 8 and 9.

[Explanation of symbols]

P ... Decorative material 1 ... Base material (molded body) 1a ... concave portion 1b ... convex portion 2 ... Surface groove 3 ... Outer convex portion 3a ... Engaging protrusion 4 ... Back groove 5 ... Outer convex part 5a ... Engaging protrusion 6 ... Gap 7 ... Base material internal structure 8 ... bubbles 11 ... Makeup sheet 12 ... Base material layer 13 ... Makeup pattern layer 14 ... Transparent protective layer 15 ... Top coat layer 16 ... Embossed section 17 ... Structural material surface 18 ... Cushion layer 19 ... Gap 20 ... Adhesive layer 21 ... Base material (molded body) 21a ... concave portion 21b ... convex portion 21c ... remaining convex shape

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shigeki Kato             1-5-1 Taito, Taito-ku, Tokyo Toppan stamp             Imprint Co., Ltd. (72) Inventor Masahiro Yamazoe             1-5-1 Taito, Taito-ku, Tokyo Toppan stamp             Imprint Co., Ltd. F-term (reference) 2E110 AA42 AB03 AB04 AB23 BD23                       DA03 DA22 GA32W GA42W                       GA42X GB43X GB62X

Claims (12)

[Claims] 1. A decorative material having a substantially rectangular plate-like body having a connecting structure on the long side and a main material made of a resin, wherein one side of the short side is formed with a protrusion in parallel with the short side. A decorative material, characterized in that, on the other side of the short side, a cutout paired with the projection is formed in parallel with the short side. 2. The projection is a projection whose upper surface is flush with the general upper surface of the outer rectangular plate, and the cutout is a cutout having the same depth as the thickness of the projection. The decorative material according to claim 1, which is present. 3. The decorative material according to claim 2, wherein the thickness of the protruding portion is thicker than the remaining thickness of the decorative material provided with the cutout portion. 4. The makeup according to claim 2, wherein the ratio of the thickness of the protruding portion to the thickness of the residual material of the decorative material provided with the cutout portion is between 2: 8 and 8: 2. Material. 5. The decorative material according to claim 2, wherein the length of the protrusion and the length of the notch are longer than 10 mm. 6. The decorative material according to any one of claims 1 to 5, wherein a short side end portion of the common upper surface constituted by the general upper surface and a surface flush with the general upper surface has a curved shape. 7. The radius of curvature of the curved surface shape is 0.5 to 5 mm.
7. The decorative material according to claim 6, wherein 8. The decorative material according to claim 1, which has a structure in which a decorative sheet is provided on the surface of the base material. 9. The connecting structure is provided with linear concave groove portions and linear concave groove portions on the base material surface at one end and the base material rear surface at the other end, respectively, linearly along opposite ends. The decorative material according to any one of claims 1 to 7, wherein the decorative material has a structure in which the front surface concave groove portion of one decorative material and the rear surface concave groove portion of another single decorative material are combined and connected. 10. An inner surface of the tip of the outer end convex portion of the one decorative material on the surface concave groove side and an inner surface of the tip of the outer end convex portion of the other decorative material on the back concave groove portion side, respectively. An outer edge convex portion that constitutes a back surface groove portion of another decorative material is fitted into the surface concave groove portion of one decorative material from above, and an engaging protrusion is provided. The outer end convex portion forming the front surface concave groove portion of the material is tightly inserted and fitted into the rear surface concave groove portion of the other one decorative material, and is locked by the engaging protrusions to make a plurality of the decorative members. The decorative material according to claim 9, wherein the materials are assembled in a planar shape so that they can be connected and constructed. 11. The decorative material according to claim 1, wherein the decorative materials are assembled with each other with a gap having a distance shorter than any length of the protrusion and the notch in the short side direction. And interior building materials. 12. The building interior material according to claim 11, wherein the gap is 0.3 to 5 mm.