JP2004052496A - Flooring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flooring with which discrimination of a side end section to be cut from a side end section on the reverse side can be done easily, having excellent workability in exchanging when only one floor face to be exchanged is removed simply by the cutting of a fitting section at one side end section of a floor face from the floor faces built by mutually fitting and spreading all over a large number of the floorings. <P>SOLUTION: The shapes of corner sections 4A and 4B between the top face and side face of the flooring are made to differ mutually at mutual side end sections, to which a detachable fitting structure is mounted, in the flooring in which the detachable fitting structure by a relative movement in the vertical direction of the adjacent mutual floorings is installed at at least a pair of the opposed side end sections of base materials 41. Alternately, fine irregular shapes are formed on the top faces of the base materials 41 or coloring sections are secured on the top faces of the base materials 41 or the rears of surface facings 49 at places among central sections among both side end sections of the top faces of the base materials 41 and one side end sections in a constitution in which the opaque surface facings 49 are laminated on the base materials 41. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a floor material to be installed on an indoor floor of a building such as a house. More specifically, a flooring material in which only one flooring material can be easily removed from a floor surface in which a large number of rectangular plate-like flooring materials are laid and constructed while being fitted to each other by a fitting structure at a side end thereof. About.
[0002]
[Prior art]
Conventionally, flooring materials for houses and the like use a base material made of a plywood or a fiberboard or the like whose outer shape is a substantially rectangular plate shape, and a convex ridge called a male is formed on one side surface of the opposite side end. It is generally constructed by forming a groove called a female on the other side, and laying a large number of floor materials on the floor base while fitting the male and female with each other. It is a target. However, floors with floor mats constructed in such a fitting structure will not affect the surrounding floor mats even if some of the floor mats are damaged or stained and need to be replaced. It is difficult to remove only those flooring materials that need to be replaced without affecting them.
[0003]
The necessity of partial replacement of such flooring has been recognized for a long time, and as a method of simply laying a new flooring in the space after partially removing some flooring, for example, Japanese Patent Publication No. There are proposals such as 44470 and JP-B-60-59378, but there is no disclosure of an effective method for easily removing only a part of the flooring material. On the other hand, Japanese Unexamined Patent Publication No. 9-78805 discloses a mechanism in which a male spring is used to lock a male member using a leaf spring in place of a female member, and the vertical deformation of adjacent floor members is performed using the elastic deformation of the leaf spring. There is a proposal of a floor material that can be freely attached and detached by relative movement in the direction, but this floor material requires a process of attaching and adjusting a leaf spring to an end portion in manufacturing the floor material, and the manufacturing process becomes complicated. In addition, if the leaf springs are corroded or loosened over time, there is a problem that the floor material is easily detached due to a load or impact during walking or the like, which is dangerous.
[0004]
Due to the above circumstances, when removing a part of the floor material constructed and laid out in large numbers while joining by male and female fitting, cut off the fitting structure part using a saw etc. at both ends At that time, especially for the female part, it is necessary to cut over the entire thickness of the flooring, so the work required for the cutting work is large, and the amount of dust such as sawdust is generated and unsanitary. In addition, since the shape of the female part is not visible from the floor, there are many problems such as an accident that the male part of the adjacent floor material is easily erroneously damaged during the cutting operation. It is a fact that difficult work has been forced.
[0005]
In view of such a problem, as shown in FIG. 1, the present applicant has already arranged the base material 11 at one end and the base material 1 at the other end along the opposite ends of the base material 11. The front surface groove 12 and the back surface groove 15 are linearly provided respectively, and the front surface groove 12 of one flooring material and the back surface groove 15 of another flooring material are combined to form a plurality of sheets. A floor material to be assembled by connecting the floor materials in a planar manner, wherein the inner surface of the one end of the floor material at the tip of the outer end protrusion 13 and the outer end of the other one of the floor materials are provided. Engagement projections 14 and 17 are respectively provided on the inner surface of the front end of the convex portion 16 on the side of the back groove portion 15, and the back surface of another floor material is disposed in the front groove portion 12 of one floor material from above. The outer end convex portion 16 forming the concave groove portion 15 is fitted to the outer end convex portion 13 forming the surface concave groove portion 12 of the one flooring material. The other one of the floor materials is closely inserted into and fitted into the concave groove 15 on the back surface, and is locked by the engaging projections 14 and 17, so that a plurality of the floor materials are assembled in a plane and connected. Developed a floor material that has been made possible, and applied for a patent as Japanese Patent Application No. 2001-296704.
[0006]
Unlike the conventional male / female fitting structure, this floor material has a fitting structure that can be detached by the relative movement of the adjacent floor materials in the vertical direction. As long as a cutting edge such as a cutter 23 is inserted into the gap 22 of the seam portion visible from the floor surface and the thin portion (broken line portion) at the bottom of the surface concave groove portion of the base material 21 is cut, the cut floor material 21 There is an advantage that the fitting of the other fitting structure can be easily released only by lifting the main body portion upward, and it is possible to easily remove only one flooring material 21. In the space from which the flooring material 21 has been removed, a flooring material 24 whose end is cut from the surface groove of the new flooring material is used, and the back surface groove side of the flooring material 21 is adjacent to the floor opposite to the cutting side. By fitting the back surface of the material 25 to the surface concave groove side and bonding the back surface to the floor base surface with an adhesive or an adhesive tape or the like, the floor surface is restored to its appearance before replacement.
[0007]
However, in order to remove only one specific floor material by the above-mentioned method, a cutter or the like is not provided along the edge of the upper surface of the floor material on the surface groove side, but on the edge of the floor material on the surface groove side instead of the edge of the floor material side. It is necessary to insert the cutting edge of the floor material and cut the bottom of the surface groove of the floor material, but when viewed from the installed floor surface, the end of the back groove side and the top of the floor material on the surface groove side As shown in FIG. 3, since it is not possible to distinguish the end portion from the end portion, the floor material 31 to be removed is formed in the gap 32 at the end portion on the back surface groove portion side opposite to the surface recess portion side to be cut. A mistake such as inserting the cutting edge of the cutter 33 or the like along the edge and cutting the bottom of the surface groove of the adjacent flooring 34 is likely to occur.
[0008]
Then, when the floor material that needs to be replaced is lifted upward in order to remove it after the cutting, the floor groove 31 of the floor material 31 to be removed is held down by the floor material 34 adjacent to the side opposite to the cut location. Can not be removed, or if it is forcibly lifted, the adjacent floor material 34 will be peeled off together, so it will be necessary to cut the part that should be cut on the opposite side again, There is a problem that the floor material 34 to be replaced needs to be replaced together. Further, the floor material newly inserted into the space after the removal of the floor material whose both ends have been cut as described above does not fit with the adjacent floor material at any of its both ends, so that the underfloor is used. Inconveniences such as displacement of the adhesive due to the creep of the adhesive used for bonding to the ground and occurrence of a step due to the height of the floor material not matching the adjacent floor material are likely to occur.
[0009]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-described problems in the related art, and an object of the present invention is to construct a floor surface in which a large number of floor materials are fitted to each other and spread. In order to easily remove only one piece that needs to be replaced by cutting the fitting part of one side end, the side end to be cut can be easily identified from the opposite side end. An object of the present invention is to provide a flooring material excellent in workability at the time.
[0010]
[Means for Solving the Problems]
The present invention is a flooring material comprising a base material provided with a fitting structure that can be detachably attached to at least one pair of opposed side ends of the base material by relative movement of adjacent flooring materials in a vertical direction. A floor material characterized in that the shapes of the corners between the upper surface and the side surface of the floor material are different from each other at opposing side ends where the combined structure is provided.
[0011]
Further, according to the present invention, in the floor material, at an opposite side end provided with the fitting structure, a shape of a corner between an upper surface and a side surface of the floor material is a convex curved surface shape, A floor material, wherein a radius of curvature of a curved surface is different between the opposed side ends.
[0012]
Further, the present invention is a flooring material, wherein at least one pair of opposing side end portions of the base material is provided with a fitting structure that is detachable by a relative movement in a vertical direction between adjacent flooring materials, An opaque surface decorative material is stuck on the base material, and on the upper surface of the base material, between the central portion between the opposed side ends provided with the fitting structure and one side end portion. And a flooring material provided with an uneven shape that does not appear on the surface of the surface decorative material.
[0013]
Further, the present invention is a flooring material, wherein at least one pair of opposing side end portions of the base material is provided with a fitting structure that is detachable by a relative movement in a vertical direction between adjacent flooring materials, An opaque surface decorative material is stuck on the base material, and on the upper surface of the base material, between the central portion between the opposed side ends provided with the fitting structure and one side end portion. A flooring material provided with a colored portion different in color from other portions on the upper surface of the base material.
[0014]
Further, the present invention is a flooring material, wherein at least one pair of opposing side end portions of the base material is provided with a fitting structure that is detachable by a relative movement in a vertical direction between adjacent flooring materials, An opaque surface decorative material is stuck on a base material, and on the back surface of the surface decorative material, between a central portion between the opposed side ends provided with the fitting structure and one side end. A floor portion provided with a colored portion different in color from other portions on the back surface of the surface decorative material.
[0015]
The present invention is also the flooring material, wherein the base material is mainly composed of a thermoplastic resin.
[0016]
Further, the present invention provides the floor material, wherein the thermoplastic resin is a polyolefin-based resin.
[0017]
Further, the present invention is the floor material, wherein a wood-based filler is mixed with the thermoplastic resin.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
In the flooring material of the present invention, it is first necessary that at least one pair of opposing side end portions of the base material be provided with a fitting structure that can be detached by the relative movement of the adjacent flooring materials in the vertical direction. is there. Although the specific structure of the fitting structure is not particularly limited in the present invention, it is an object of the present invention that only one specific floor material can be easily removed from the existing floor surface. In order to do so, only one side of the opposite side end, and a portion having a thickness smaller than the total thickness of the flooring material is cut, and the flooring material is lifted upward, so that the flooring material adjacent to both sides can be cut. It is desirable to have a structure that can be disengaged by releasing the fitting.
[0019]
Specifically, as described in Japanese Patent Application No. 2001-296704 cited above, along one of both ends of the base material 11 facing each other, the surface of the base material 1 at one end and the other end are formed. By providing the front surface groove 12 and the back surface groove 15 linearly on the back surface of the base material 1, respectively, by combining the surface groove 12 of one flooring material and the back surface groove 15 of another flooring material. A floor material for connecting and constructing a plurality of floor materials in a planar manner, wherein the inner surface of the front end portion 13 of the one floor material on the side of the surface groove 12 and the other floor material Engagement projections 14 and 17 are respectively provided on the inner surface of the outer end convex portion 16 at the front end portion on the side of the rear concave groove portion 15, and the other one is provided in the surface concave groove portion 12 of one floor material from above. Outer end convex portions 16 constituting the back surface groove portion 15 of the floor material are fitted, and the surface groove portion 1 of the one floor material is fitted. Of the other floor material is tightly inserted and fitted into the back surface groove 15 of the other floor material, and is locked by the engaging projections 14 and 17 to thereby form a plurality of floor materials. A structure (see FIG. 1) in which the materials are assembled in a planar shape so that they can be connected and constructed can be suitably adopted.
[0020]
As shown in FIG. 2, the floor material having the above-mentioned fitting structure is formed by fitting a large number of the floor materials to each other and constructing the floor of the surface groove 12 of one floor material 21 to be removed. In the gap 18 between the inner surface on the material main body side and the side surface of the front end of the outer end convex portion 16 on the side of the back surface concave groove portion 15 of the adjacent floor material fitted in the front concave groove portion 12, a cutter 33 or the like is provided. By inserting the cutting edge and cutting the foil portion (broken line portion) at the bottom of the surface groove 12 below the gap 18, the fitting with the floor material adjacent to the surface groove 12 can be achieved. On the other hand, the fitting between the floor material 25 adjacent to the opposite side is released by lifting the floor material 21 to be removed upward, so that only the floor material 21 is simply removed. It has the advantage that it can be done.
[0021]
In such a flooring material, the material of the base material 11 is not particularly limited. For example, a material similar to the base material in the conventional flooring material, such as a wood-based material, a metal-based material, and a synthetic resin-based material, can be used. However, in the fitting structure portion, it is deformed so as to get over the engaging projections 14 and 17 and can be easily attached and detached, and the deformation can be easily eliminated after fitting and dismounting, and the original shape can be recovered and maintained. A material having appropriate flexibility, elasticity (bending stress), and resilience is required so that the floor material does not come off due to natural release in a stress-free state. From such a viewpoint, it can be said that a thermoplastic resin material is more suitable than a wood or metal material.
[0022]
Among the above-mentioned thermoplastic resins, a hard resin such as a polystyrene-based resin or a polyester-based resin requires a large force to deform so as to get over the engagement protrusions 14 and 17 in the fitting structure portion,・ Since cracks are likely to occur without being able to withstand the deformation at the time of desorption, it is most preferable to use polyolefin resins such as polyethylene and polypropylene that have excellent so-called hinge properties such as deformability, crack resistance, and resilience. desirable. In addition, by appropriately mixing a wood-based filler such as wood flour with these resins, the resilience for preventing permanent deformation is enhanced, and the flexibility (deformability) and the elasticity (bending stress) are balanced. It is also possible to obtain resin physical properties that are both easy to combine and desorb and stability that does not spontaneously desorb during use.
[0023]
A surface decorative material 19 for enhancing the design effect may be attached to the surface of the substrate 11. As the surface decorative material 19, for example, a veneer obtained by thinly cutting natural wood, decorative paper having a wood grain pattern printed on paper, a wood grain pattern printed on a synthetic resin sheet, or embossing such as a wood grain conduit pattern is applied. There are decorative sheets and the like, and any of them can be used for the flooring material of the present invention. However, in consideration of the suitability of the floor material for recycling, it is desirable to use the surface decorative material 19 made of the same or similar material as the base material 11. For example, when the base material 11 is mainly composed of a polyolefin resin, it is desirable to use a decorative sheet mainly composed of a polyolefin resin as the surface decorative material 19.
[0024]
By the way, as described above, on a floor surface constructed by laying a large number of floor materials having the above-mentioned fitting structure while being fitted to each other at both ends, upon removal of one specific floor material 31, The portion to be cut in the gap between the floor material 31 and the adjacent floor material on the surface groove 12 side is erroneously determined from the gap 32 between the adjacent floor material on the opposite back surface groove portion 15 side. When the cutting edge of the cutter 33 or the like is inserted and cut, the fitting between the floor member 34 adjacent to the cut portion and the opposite side cannot be released, so that the floor member 31 to be removed can be removed. The situation that cannot be done occurs.
[0025]
In order to prevent such a situation, the present invention provides four types of solutions described below. The first means, as shown in FIG. 4, faces the gap 48 between the upper surface of the floor material exposed to the surface after construction and forms a floor surface and an adjacent floor material visible from the floor surface after construction. The shapes of the corners 4A and 4B between the side surface and the opposite side end of the flooring material are mutually connected, that is, the corner 4A on the back groove 45 side and each part 4B on the front groove 42 side, They have different shapes.
[0026]
Here, the shapes different from each other only need to have a shape difference that can be distinguished from each other when viewed from the floor surface after construction, and the specific shape is not particularly limited in the present invention. . To give a specific example, the width and / or the inclination angle may be different if the shape is a slope (C chamfering), the radius of curvature may be different if the shape is convex (R chamfering), or Various forms are conceivable, such as a slope shape (C chamfering) and a convex curved surface shape (R chamfering) on the other side.
[0027]
However, from an aesthetic point of view, if the shapes of the two are extremely different, it is not preferable because the appearance is uncomfortable and it is not preferable. It is desirable to make the shape difference of the order. According to the prototype experiments of the present inventors, it is considered that the corner portions 4A and 4B having the convex curved surfaces (R chamfers) having different radii of curvature are most excellent in both the discriminating property and the appearance design. Conceivable. As a specific numerical value of the radius of curvature, one is about 0.3 to 1.5 mm, the other is about 0.8 to 2 mm, and a good result is obtained when they differ from each other by about 0.3 to 0.8 mm. It seems to be obtained. It should be noted that which one of the corners 4A and 4B has a larger radius of curvature is optional as desired and is not particularly limited.
[0028]
The first means can be applied to the case where the surface decorative material 49 is laminated on the surface of the base material 41 and the case where the surface decorative material 49 is not laminated. The means is a means applicable only when the surface decorative material is laminated on the surface of the base material and the surface decorative material is opaque.
[0029]
As shown in FIG. 5, the second means is provided between a central portion between one side end on the front concave groove portion 52 side or the rear concave groove portion 55 side on the upper surface of the base material 51 and the central portion between both side ends. A slight uneven shape such as a shallow groove 5C is formed so as not to appear on the surface of the surface decorative material 59 when the surface decorative material 59 is laminated thereon. In the example shown in FIG. 5, the concave and convex shallow groove 5 </ b> C is provided in the vicinity of the side edge of the base material 51 on the side of the concave groove portion 55, but the side edge of the opposite surface concave groove portion 52 is provided. May be provided in the vicinity.
[0030]
The concave and convex shape may be a concave portion such as a shallow groove 5C, or a convex portion slightly protruding above the general upper surface of the base material 51, or a convex portion slightly protruding above the general upper surface of the base material 51. It may be a step or the like whose height slightly changes, or a combination of these steps may be provided. What is important is that the surface decorative material 59 laminated thereon is not seen from the surface or felt on the soles and the like, and that when the surface decorative material 59 is peeled off, the uneven shape can be easily confirmed visually.
[0031]
In this sense, even if the height difference is increased to some extent so that it is easy to visually confirm when the surface decorative material 59 is peeled off, it is difficult to recognize from the surface of the surface decorative material 59, such as a shallow groove 5C. Is most desirable. The dimensions may be small as long as they can be visually confirmed, and both the width and the depth of about 0.5 mm or less are sufficient. If the shape is sharp such as a scratch, it can be visually confirmed even with a few μm. is there.
[0032]
The concavo-convex shape such as the shallow groove 5 </ b> C may be provided in a straight line parallel to the side end of the base material 51, or may be an arbitrary figure or symbol array such as a wavy shape, a broken line shape, a circle or a star. , "Please cut this side", "Please cut the other side", "CUT THISSIDE", "CUT ANOTHER SIDE", etc.
[0033]
The formation position of the uneven shape may be closer to any one of the side ends than the center between both side ends on the upper surface of the base material 51, but if it is too close to the center, it is closer to any one of the side ends. Since it is difficult to determine whether or not there is a difference, it is desirable to set the position at least a distance of at least one-tenth of the distance between both side ends from the center. In the case of providing a concavo-convex shape that can be identified as a cut side by a character string or the like, a concavo-convex shape for displaying a cut side and a non-cut side may be provided on both end portions.
[0034]
The method for forming the uneven shape is not particularly limited in the present invention, and examples thereof include a cutting method using a scribe needle, a chisel, a plane, a router, and the like, and an embossing method using an embossing plate or an embossing roll. A conventionally known method for forming concavities and convexities can be arbitrarily adopted. Furthermore, if the base material 51 is made of a thermoplastic resin, an inverted irregular shape is provided on a molding die surface such as extrusion molding or injection molding, and a method of forming the irregular shape at the same time as the resin molding may be used. It is possible to easily obtain a molded body having a desired uneven shape at a location.
[0035]
As shown in FIG. 6, the third means is provided between the central portion between one side end on the front concave groove portion 62 side or the rear concave groove portion 65 side on the upper surface of the base material 61 and the central portion between both side ends. A colored portion 6D colored differently from other portions of the upper surface is formed. The shape (pattern), formation position, and the like of the colored portion 6D are basically the same as those in the case of the uneven shape in the above-mentioned second means. A fixed width portion may be colored solid.
[0036]
The method of forming the colored portion 6D is not particularly limited in the present invention, and includes, for example, drawing with a felt-tip pen or a ball-point pen, brush coating, a coating method such as a roll coat or a nozzle coat, a printing method such as thermal transfer or ink jet, Conventionally known coloring methods such as various printing methods such as roller stamping, rubber letterpress printing or silk printing, and application of a coloring tape can be arbitrarily adopted. Further, when the base material 61 is made of a thermoplastic resin, it is also possible to add a coloring agent to the resin itself and to color the resin itself. By the two-color molding method or the like, it is possible to easily obtain a molded product partially colored in different colors. In this case, a portion having a certain width on the side end portion side of the base material 61 may be entirely colored from the front surface to the back surface.
[0037]
The fourth means is, as shown in FIG. 7, between the central portion between one side end on the front concave groove portion 72 side or the rear concave groove portion 75 side on the back surface of the front surface decorative material 79 and the center portion between both side ends. A colored portion 7E colored differently from the other portion of the rear surface is formed. The shape (pattern), forming position, forming method, and the like of the colored portion 7E are basically the same as those of the colored portion 6D in the third means.
[0038]
In the flooring material of the present invention, there are cases where the above-mentioned vertically detachable fitting structure is provided only on a pair of opposed side end portions of the substantially rectangular base material, or two pairs. In some cases, it is provided at the opposite side end, that is, on all four circumferences. In the latter case, the other two sides and the corners are formed in an L-shape in the vicinity of one of the two pairs of opposing side ends, that is, along two adjacent sides of the substantially rectangular base material. Of the base material, or a colored portion 6D on the surface of the base material or a colored portion 7E on the back surface of the surface decorative material.
[0039]
【Example】
Example 1
A resin composition comprising 65 parts by weight of a polypropylene resin, 30 parts by weight of a wood-based filler (wood powder having an average particle size of 30 μm), and 5 parts by weight of a lubricant is used as a raw material, and has a cross section in the width direction of 6 mm in thickness and 158 mm in width. The end has a fitting structure shown in FIG. 4, the corner between the upper surface and the side surface at the side end on the back groove side is a curved surface with a radius of curvature of 1.0 mm, and the side on the front groove side. The corner between the upper surface and the side surface at the end is formed into a long cross-sectional shape having a curved surface with a radius of curvature of 0.5 mm by a profile extrusion molding method, and is cut every 1800 mm in the extrusion direction, The floor material of the present invention was produced.
[0040]
When the floor material was laid on the concrete slab surface and the floor surface was constructed while fitting the floor materials to each other with the above-mentioned fitting structure, the difference in the radius of curvature of the corners caused the posture or chair standing upright on the floor surface. Although he did not notice anything when he was sitting on the floor, he could easily identify it when he approached the floor and observed carefully. Then, the edge of a cutter is inserted into a gap between the floor material having a small radius of curvature and an adjacent floor material having a small radius of curvature to cut the bottom, and the floor material is sucked and lifted by a suction cup. However, the fitting portion with the floor material on the opposite side was detached, and only one floor material could be easily removed.
[0041]
Example 2
A resin composition comprising 65 parts by weight of a polypropylene resin, 30 parts by weight of a wood-based filler (wood powder having an average particle size of 30 μm), and 5 parts by weight of a lubricant is used as a raw material, and has a cross section in the width direction of 5 mm in thickness and 180 mm in width. It has a fitting structure shown in FIG. 5 at the end, and is formed into a long cross-sectional shape in which the corners of the upper surface and both side surfaces are both curved surfaces with a radius of curvature of 0.5 mm by a profile extrusion molding method. At this time, after passing through a sizing mold and a water tank and solidifying by cooling, the blade edge of the cutter knife is pressed at a position of 20 mm from the center in the width direction of the upper surface to the end on the side of the concave groove on the back surface, thereby obtaining a depth of about 5 mm. A scribing line of ２０20 μm was formed, and thereafter, the substrate was cut at a length of 1800 mm in the extrusion direction to prepare a substrate.
[0042]
A decorative sheet having a thickness of about 180 μm, in which a transparent polypropylene resin layer is laminated on a colored polypropylene resin film via a picture layer, and a surface protective layer made of an ultraviolet-curable resin is provided, is placed on one side of the base material from the upper surface. The flooring material of the present invention was produced by laminating the parts through a one-component moisture-curable polyurethane hot melt adhesive by a lapping method.
[0043]
When this floor material was fitted to the concrete slab surface and the floor surface was constructed while fitting each other with the above-mentioned fitting structure, the scribe line attached to the surface of the base material was completely different from the floor surface. Although it was not visible, it was easily confirmed when a part of the decorative sheet on the surface was peeled off. Then, the edge of a cutter is inserted into a gap between an adjacent floor material on the opposite side of the score line of a certain floor material and the bottom is cut, and this floor material is sucked up by a suction cup and lifted. However, the fitting portion with the floor material on the opposite side was detached, and only one floor material could be easily removed.
[0044]
Example 3
In Example 2 above, a circular felt roll (use of blue ink: Pilot Corporation, blue black ink) shown in FIG. 8 was used at the same position instead of forming a scribe line on the upper surface of the base material during the profile extrusion molding. Then, a blue line having a width of 2 mm was drawn, and a flooring material of the present invention was produced in the same manner as in Example 2 except for the above.
[0045]
When this floor material was fitted on the concrete slab surface and the floor surface was constructed while fitting each other in the above fitting structure, the blue line attached to the surface of the base material was completely Although it was not visible, it was easily confirmed when a part of the decorative sheet on the surface was peeled off. Then, the edge of a cutter is inserted into a gap between the floor material and the adjacent floor material on the opposite side to the blue line, and the bottom is cut, and the floor material is sucked up by a suction cup and lifted. However, the fitting portion with the floor material on the opposite side was detached, and only one floor material could be easily removed.
[0046]
Example 4
In the third embodiment, instead of drawing the blue line on the upper surface of the base material, the blue line is drawn in advance at the corresponding position on the back surface of the decorative sheet, and the rest of the flooring material of the present invention is the same as in the third embodiment. Was prepared.
[0047]
When this floor material was fitted to the concrete slab surface and the floor surface was constructed while fitting each other in the above fitting structure, the blue line attached to the back of the decorative sheet was completely Although it was not visible, it was easily confirmed when a part of the decorative sheet was peeled off from the substrate. Then, the edge of a cutter is inserted into a gap between the floor material and the adjacent floor material on the opposite side to the blue line, and the bottom is cut, and the floor material is sucked up by a suction cup and lifted. However, the fitting portion with the floor material on the opposite side was detached, and only one floor material could be easily removed.
[0048]
【The invention's effect】
As described in detail above, the flooring material of the present invention has a shape of a corner between the upper surface and the side surface, an uneven shape of the surface of the substrate, a colored portion on the surface of the substrate, or a surface decoration on the substrate. Before removing the floor material installed on the floor surface by removing the colored part on the back surface of the material, it is easy to identify which side of the floor material can be easily removed by cutting it. By cutting the other side, it is possible to prevent accidents such as removing other floor materials together, and to avoid the hassle of having to cut the part that should originally be cut twice, etc. This has a remarkable effect that it is possible to simply, reliably and efficiently remove only the floor material that needs to be replaced.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a fitting structure portion in an example of a floor material that can be attached and detached in a vertical direction.
FIG. 2 is an explanatory view in the order of steps showing a method of removing only one specific floor material from a floor on which a vertically removable floor material is constructed.
FIG. 3 is an explanatory view of a process order showing a case where a cut portion is incorrect when removing only one specific floor material from a floor surface on which a vertically removable floor material is constructed.
FIG. 4 is an explanatory view of a fitting structure portion in one embodiment of the flooring material according to the present invention.
FIG. 5 is an explanatory view of a fitting structure portion in one embodiment of the flooring according to the present invention.
FIG. 6 is an explanatory view of a fitting structure portion in one embodiment of the flooring according to the present invention.
FIG. 7 is an explanatory view of a fitting structure portion in one embodiment of the flooring according to the present invention.
FIG. 8 is an explanatory view of a felt roll used for manufacturing the flooring according to the present invention.
[Explanation of symbols]
11, 41, 51, 61, 71 substrate
12, 42, 52, 62, 72 surface groove
13, 43, 53, 63, 73 {outer end convex portion
14, 44, 54, 64, 74 engagement projection
15, 45, 55, 65, 75 ‥‥ Backside groove
16, 46, 56, 66, 76 ° outer end protrusion
17, 47, 57, 67, 77 engagement projection
18, 48, 58, 68, 78 ° clearance
19, 49, 59, 69, 79 Surface cosmetics
21, 24, 25, 31, 34 ‥‥ Floor material
22, 32 ° clearance
23, 33 ‥‥ cutter
4A ‥‥ A corner between the upper surface and the side surface at the side end on the side of the concave groove portion on the back surface
4B ‥‥ A corner between the upper surface and the side surface at the side end on the surface concave groove side
5C @ shallow groove
6D ‥‥ Coloring part on substrate surface
7E ‥‥ Coloring area on the back of the surface decorative material
81 ‥‥ felt
82 ‥‥ metal roll
83 ‥‥ ink tank

Claims (8)

At least one pair of opposing side ends of a base material is provided with a fitting structure that is detachable by a relative movement in the vertical direction between adjacent floor materials, wherein the fitting structure is provided. The floor material, wherein the shape of the corner between the upper surface and the side surface of the floor material is different from each other at the opposing side end portions. At the opposite side end provided with the fitting structure, the shape of the corner between the upper surface and the side surface of the flooring material is a convex curved surface shape, and the radius of curvature of the curved surface is the opposite side. The flooring according to claim 1, characterized in that the ends differ from each other. A flooring material provided with a fitting structure that can be detachably attached to at least one pair of opposed side ends of a base material by a relative movement in the vertical direction between adjacent flooring materials, wherein the base material is opaque on the base material. Surface cosmetic material is adhered, and the surface cosmetic material is provided between a central portion between the opposite side ends provided with the fitting structure and one side end on the upper surface of the base material. A flooring material characterized by being provided with irregularities so as not to appear on the surface of the floor. A flooring material provided with a fitting structure that can be detachably attached to at least one pair of opposed side ends of a base material by a relative movement in the vertical direction between adjacent flooring materials, wherein the base material is opaque on the base material. A surface cosmetic material is adhered, and on the upper surface of the base material, between the central portion between the opposite side ends where the fitting structure is provided and one side end portion, A flooring material provided with a colored portion different in color from other portions on the upper surface. A flooring material provided with a fitting structure that can be detachably attached to at least one pair of opposed side ends of a base material by a relative movement in the vertical direction between adjacent flooring materials, wherein the base material is opaque on the base material. A surface cosmetic material is adhered, and the surface cosmetic material is provided between the center part between the opposite side ends provided with the fitting structure and one side end on the back surface of the surface cosmetic material. A flooring material provided with a colored portion different in color from other portions on the back surface of the material. The floor material according to any one of claims 1 to 5, wherein the base material is mainly composed of a thermoplastic resin. The floor material according to claim 6, wherein the thermoplastic resin is a polyolefin resin. The floor material according to claim 6 or 7, wherein a wood-based filler is blended with the thermoplastic resin.

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