JP2017160774A - Tile unit and soft resin joint material of tile unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tile unit for easily cleaning a joint.SOLUTION: In a tile unit having a base sheet 2 having a sticking layer on both surfaces, a tile piece 3 arranged by providing a predetermined joint space 6 on a surface of the base sheet 2 and sticking via the sticking layer to the surface of the base sheet 2 and a net-like soft resin joint material 4 having a through-tablet hole 40 smaller than a thickness of the tile piece 3 in a thickness and modeled in response to arrangement of the tile piece 2 arranged on the base sheet 2 and stored itself in the joint space 6 by fitting the tile piece 3 in the through-tablet hole 40, the through-tablet hole 40 of the soft resin joint material 4 is formed in a densely fitting shape to the tile piece 3, on the one hand, sticking prevention means (a sticking cover member 5) for preventing sticking to the sticking layer of the soft resin joint material 4, is provided between the soft resin joint material 4 and the sticking layer of the surface of the base sheet 2, and the soft resin joint material 4 can be freely attached-detached to the joint space 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a tile unit for attaching and decorating tiles on an adherend surface such as an indoor wall surface or an outer surface of furniture.

Conventionally, a double-sided pressure-sensitive adhesive sheet is formed by providing pressure-sensitive adhesive surfaces on both the front and back sides of a base sheet, and a plurality of tile pieces are bonded to the surface of the double-sided pressure-sensitive adhesive sheet, and the pressure-sensitive adhesive surface on the back surface is bonded to the adherend surface. There is a tile unit (see Patent Document 1).
In this tile unit, a transparent sheet is attached to the surface of the tile piece, first the whole sheet is attached to the adherend surface, then the transparent sheet is peeled off, and then a joint material is introduced into the joint part of the tile piece. That's it.

No. 3071347 (paragraph 0019, FIG. 5) JP2015-59322A

  In the above conventional tile unit, joint material is introduced into the joint portion of the tile piece after being attached to the adherend surface, but in order to achieve a finish that is comparable to that obtained by conventional plastering work, Appropriate skill is required. Therefore, it is extremely difficult for general consumers who have no experience of plastering work to finish a beautiful joint, and of course it takes time. In addition, since joint mortar is generally used as the joint material, there is a problem that it has water absorbency, dirt is likely to penetrate, and cleaning when dirty is difficult.

  In order to solve the problems existing in the tile unit of Patent Document 1, the present applicant can apply tiles easily and cleanly even by general consumers who have no plasterer experience, and can be easily cleaned even if they are dirty. A patent application has already been filed for the unit (Patent Document 2).

  As shown in FIGS. 8 and 9, the tile unit 100 of Patent Document 2 is arranged by providing a base sheet 200 having adhesive layers on both front and back surfaces, and a predetermined joint space 500 on the surface of the base sheet 200. And a plurality of tile pieces 300 attached to the surface of the base sheet 200 via an adhesive layer, and a soft resin joint material 400 attached to the surface of the base sheet 200 via the adhesive layer. ing. The soft resin joint material 400 has at least a surface having water resistance, a thickness smaller than the thickness of the tile piece 300, and an outer dimension substantially the same as the base sheet 200. It has a through-frame hole 4000 shaped according to the shape and arrangement.

  This tile unit 100 can achieve the intended purpose of the invention that even general consumers without plastering experience can easily and cleanly form tile joints, and can be easily cleaned even when dirty. Still, dirt is likely to remain on the edge portion along the side surface of the tile piece 300 of the soft resin joint material 400, and the tile shape 300 is firmly solidified with the soft resin joint material 400, so that one tile can be obtained. Since the unit 100 is in a state as if it is a highly rigid plate, a new problem has arisen in that it is difficult to peel off from the adherend surface once it is attached.

  This invention is made | formed in view of the above, The objective is to provide the tile unit which is easy to clean a joint.

In order to achieve the above object, the present invention as described in claim 1,
A base sheet having adhesive layers on both the front and back sides;
A plurality of tile pieces arranged with a predetermined joint space on the surface of the base sheet and attached to the surface of the base sheet through the adhesive layer;
It has a through frame hole that has a thickness smaller than the thickness of the tile piece and is shaped according to the arrangement of the tile piece arranged on the base sheet, and the tile piece is fitted into the through frame hole by itself. In a tile unit comprising a mesh-shaped soft resin joint material adapted to fit in the joint space,
The through-holes of the soft resin joint material are formed in a shape that fits closely with the tile pieces,
On the other hand, an adhesion preventing means for preventing adhesion of the soft resin joint material to the adhesive layer is provided between the soft resin joint material and the adhesive layer on the surface of the base sheet.
Thus, a tile unit is provided in which the soft resin joint material can be freely attached to and detached from the joint space.

  In addition, as described in claim 2, the sticking prevention means covers a sticking layer corresponding to the joint space of the base sheet with a sticking cover member, and the sticking cover member is used as a base. The tile unit according to claim 1, wherein the tile unit is interposed between a sheet and the soft resin joint material.

  Moreover, as described in Claim 3, between the said adhesive cover member and the said soft resin joint material, both are made by the adhesive force smaller than the adhesive force by the said adhesive layer of the said base sheet and an adhesive cover member. The tile unit according to claim 2, wherein a weakly sticking adhesive layer capable of being attached and peeled is interposed.

  Further, as described in claim 4, the sticking prevention means covers the back surface of the soft resin joint material with a release layer that makes sticking of the sticking agent difficult. Provide tile units.

  Further, as described in claim 5, the sticking prevention means is configured so that the soft resin joint material and the surface of the base sheet are in a state where the soft resin joint material is fitted in a predetermined position of the joint space. The tile unit according to claim 1 or 4, wherein a gap is formed between the adhesive layer and the adhesive layer.

  Moreover, as described in Claim 6, the said soft resin joint material is a magnitude | size which can respond | correspond to two or more base sheets to which the said tile piece was affixed, The any one of Claims 1-5 The tile unit described in is provided.

Further, as described in claim 7, a plurality of tile pieces arranged in a predetermined joint space on the surface of the base sheet and attached to the surface of the base sheet,
It has a through frame hole that has a thickness smaller than the thickness of the tile piece and is shaped according to the arrangement of the tile piece arranged on the base sheet, and the tile piece is fitted into the through frame hole by itself. The soft resin joint material of a tile unit comprising a mesh-shaped soft resin joint material adapted to fit in the joint space,
Providing a soft resin joint material for tile units that is formed to a size that can accommodate two or more base sheets to which the tile pieces are attached, and that can be mounted across a joint portion between a plurality of tile units. To do.

In the tile unit of the present invention, since the soft resin joint material is not attached to the base sheet by the sticking prevention means, the soft resin joint material can be freely attached to and detached from the joint space. Therefore, it is possible to remove the soft resin joint material from the joint space and clean it (clean), and then put the soft resin joint material thus cleaned back into the joint space. It is easy to remove stains on the edges along the tile pieces of the resin joint material. Moreover, if the front and back surfaces of the soft resin joint material are formed in different colors, it is possible to simply change the joint color by simply turning it over.
Further, by removing the soft resin joint material from the joint space, a play space is created around the tile piece, so that the tile unit is easily bent in the surface direction. Therefore, it is easy to peel off the tile unit from the adherend surface, so it is easy to change the room by pasting it, or to stick it on the wall of a rental apartment that needs to be restored when moving out. Can do.

  The sticking prevention means covers the sticking layer corresponding to the joint space of the base sheet with the sticking cover member as described in claim 2, or the back surface of the soft resin joint material as described in claim 4. Can be easily carried out by covering the substrate with a release layer or forming a gap between the soft resin joint material and the adhesive layer on the surface of the base sheet as described in claim 5. . Further, in claim 2, wherein the adhesive cover member is interposed between the base sheet and the soft resin joint material, the weak adhesive property between the adhesive cover member and the soft resin joint material as in claim 3. If the adhesive layer is interposed, the stability in the joint space can be improved without impairing the freedom of attachment / detachment of the soft resin joint material to the joint space.

  In addition, as described in claims 6 and 7, if the soft resin joint material is sized so as to correspond to two or more base sheets to which tile pieces are attached, the seams between a plurality of tile units are provided. Since the portion can be hidden with the soft resin joint material, the joint between the tile units can be made inconspicuous.

It is a whole perspective view including the partial enlarged view of a tile unit. It is a disassembled perspective view of a tile unit. FIG. 3 is an enlarged view of Z1, Z2, and Z3 in FIG. It is an expansion longitudinal cross-sectional view of the tile unit which abbreviate | omitted the middle. It is an exploded perspective view which shows the other form of a soft resin joint material, and shows the state which affixes two tile units on a to-be-adhered surface. It is the expansion longitudinal cross-sectional view of the tile unit which shows the other form of the sticking prevention means, and abbreviate | omitted the middle. It is the expansion longitudinal cross-sectional view of the tile unit which shows the other form of the sticking prevention means, and abbreviate | omitted the middle. It is a whole perspective view including the one part enlarged view of the conventional tile unit. It is an enlarged vertical sectional view in which the middle of a conventional tile unit is omitted.

[Embodiment 1]
Embodiment 1 of the present invention will be described below with reference to FIGS.
1 to 5, the tile unit 1 includes a base sheet 2, a plurality of tile pieces 3, 3..., A net-shaped soft resin joint material 4, and a net-shaped paste serving as an adhesion preventing means. The cover cover member 5 is schematically configured.

[Base sheet]
The base sheet 2 is a thin sheet made of, for example, a square paper of about 150 mm × 150 mm or a synthetic resin, and has an adhesive layer (not shown) formed by applying an adhesive or an adhesive to the back surface and the surface.

[Tile pieces]
The tile piece 3 is made of ceramic, glass, synthetic resin, metal, bamboo, wood, stone or the like. The tile pieces 3 have a decorative surface on the front surface and a substantially flat joining surface. The tile pieces 3 are arranged with a predetermined joint space 6 on the surface of the base sheet 2 and are arranged on the surface of the base sheet 2. It sticks through the said sticking layer.
The tile piece 3 according to the embodiment is made of ceramic fired with glaze on the surface, is a square plate shape of about 23 mm × 23 mm × 6.5 mm, and has a joint space 6 of 2 mm to 3 mm on the surface of the base sheet 2. 6 × 6 are arranged.
Note that the joint space 6 of the tile pieces 3, 3... Is adjacent to two sides (with the corners of the base sheet 2) except for special ones used for the edge of the adherend surface 7 (this will be described later). It is not on the left and bottom sides in the figure. As a result, when a plurality of tile units 1, 1... Are arranged side by side or vertically, the joint joint space 6 between the tile units 1, 1. be able to.

[Soft resin joint material]
The soft resin joint material 4 is, for example, a white material mainly composed of a soft vinyl chloride resin, and has water resistance and appropriate elasticity. This soft resin joint material 4 has a thickness smaller than the thickness of the tile piece 3 (in the embodiment, approximately 1/3 (approximately 1.8 mm)), the outer dimension is substantially the same as the base sheet 2, and is arranged in the base sheet 2. Is a lattice-type net shape having through-frame holes 40, 40, which are formed in a straight line in the thickness direction in accordance with the shape and arrangement of the tile pieces 3, 3,. The soft resin joint material 4 is fitted into the through-holes 40, 40, and the tile pieces 3 are tightly fitted into the joint space 6 so that the soft resin joint material 4 can be accommodated in the joint space 6 and can be stopped in the joint space 6 by elastic tension. ing.

[Attachment cover material]
The adhesive cover member 5 is interposed between the soft resin joint material 4 and the adhesive layer on the surface of the base sheet 2 to cover the adhesive layer of the base sheet 2, and thus the soft resin joint material 4. This prevents the sticking to the sticking layer. This sticking cover member 5 is substantially the same shape as the soft resin joint material 4 (therefore, has a through forehead hole 50 substantially the same as the through forehead hole 40) and is the same material (in the embodiment, the same material). However, the thickness does not exceed the thickness of the tile piece 3 when combined with the soft resin joint material 4, specifically about 3.5 mm, and the joint space is attached to the adhesive layer of the base sheet 2. 6 is inside.

In the tile unit 1 according to the first embodiment having the above configuration, the adhesive layer corresponding to the joint space 6 of the base sheet 2 is covered with the adhesive cover member 5, and the adhesive cover member 5 itself has an adhesive layer. Therefore, the soft resin joint material 4 fitted in the joint space 6 is accommodated in the joint space 6 only by its own tensile force, that is, frictional resistance, without sticking anywhere.
Accordingly, since the soft resin joint material 4 can be freely and repeatedly attached and detached at any time, the soft resin joint material 4 is removed from the joint space 6 and cleaned, and the soft resin joint material 4 thus cleaned is put into the joint space 6. Since the soft resin joint material 4 can be removed from the joint space 6, a play space is created around the tile pieces 3, 3. The peeling from the adherend surface 7 becomes easy.

[Attaching method 1]
Next, a method for adhering the tile unit 1 of Embodiment 1 to an adherend surface 7 such as a wall surface in a building room will be described in order from the manufacturing stage.
First, since the adhesive layers on both the front and back surfaces of the base sheet 2 are protected by peelable release paper (not shown), the release paper on the surface is peeled off and the adhesive cover member 5 is attached to the adhesive layer on the surface. Affix.
Next, the tile pieces 3, 3... Are fitted into the through-hole holes 50, 50... Of the adhesive cover member 5 and pressed against the adhesive layer of the base sheet 2. Thereby, the tile piece 3 is stuck to the surface of the base sheet 2 through the sticking layer.
Next, the soft resin joint material 4 is fitted into the joint space 6 through the tile pieces 3, 3.
In the tile unit 1 manufactured in this way, as shown in the perspective view of FIG. 1, all the tile pieces 3, 3... Attached to the surface of the base sheet 2 are through-hole holes 40, 40 of the soft resin joint material 4. Are fitted with almost no gaps, and the soft resin joint material 4 is slightly recessed from the surface of the tile piece 3, so that the soft resin joint material 4 looks like a joint made of mortar.
The release paper on the back surface of the base sheet 2 is peeled off from the tile unit 1 and attached to the adherend surface 7. When the adherend surface 7 is wider than the tile unit 1, a plurality of tile units 1 are arranged vertically and horizontally so as to cover the adherend surface 7.

[Adhesion method 2]
Next, the sticking method 2 of the tile unit 1 of Embodiment 1 is demonstrated with reference to FIG.
First, similarly to the sticking method 1, the release paper on the surface of the base sheet 2 is peeled off, and the sticking cover member 5 is stuck on the sticking layer on the surface.
Next, the tile pieces 3, 3... Are fitted into the through-hole holes 50, 50... Of the adhesive cover member 5 and pressed against the adhesive layer of the base sheet 2. Thereby, the tile piece 3 is stuck to the surface of the base sheet 2 through the sticking layer.
Next, the release paper on the back surface of the base sheet 2 is peeled off and adhered to the adherend surface 7 so that the intermediate body 10 of the tile unit 1 before the soft resin joint material 4 is fitted is attached to the adherend surface 7 in advance. To do. This operation is repeated to cover the adherend surface 7 with the tile pieces 3, 3.
Next, the soft resin joint material 4 is fitted into the joint space 6 through the through-frame holes 40, 40. In addition, since the adhesive cover member 5 is substantially the same shape with the same material as the soft resin joint material 4 as described above, this step is omitted and the adhesive cover member 5 is exposed to the outside. In this way, a finish like a so-called “deep joint” having joints at deep positions can be obtained. Therefore, the sticking cover member 5 can also be read as the second soft resin joint material from the shape, material, usage mode, function, and the like.
In this affixing method 2, the process up to adhering the affixing cover member 5 and the tile pieces 3, 3... To the base sheet 2 is performed at the factory, and the intermediate 10 of the tile unit 1 and the soft resin necessary for completion. The joint material 4 is set and distributed in the market. Finally, the customer sticks the tile pieces 3, 3... On the adherend surface 7 as described above, and then penetrates the tile pieces 3, 3. The soft resin joint material 4 is fitted into the joint space 6 through the frame holes 40, 40.
In this case, as shown in FIG. 5, if the soft resin joint material 4 having a size corresponding to two or more base sheets 2 is used, the joint between the tile unit 1 and the tile unit 1 is the soft resin joint material 4. Because it hides in, it will be more like a real joint material. Of course, the soft resin joint material 4 can be made less conspicuous as the intermediate surface 10 is covered with a single sheet so as to be close to the size of the adherend surface 7.

As mentioned above, although the sticking methods 1 and 2 of the tile unit 1 were demonstrated, the intermediate body 10 of the sticking method 2 was made into the form which stuck the sticking cover member 5 to the base sheet 2, and it adheres it The tile pieces 3, 3... And the soft resin joint material 4 may be assembled in order after the front surface 7 is attached.
According to this sticking method, the process until the sticking cover member 5 is stuck to the base sheet 2 is performed at the factory, the sticking cover member 5 and the intermediate body 10 of the base sheet 2, and the necessary number (sticking) A customer who has purchased a set of tile pieces 3, 3... Equal to or more than the number of through-frame holes 50 of the cover member 5, as described above, places the tile pieces 3, 3 on the adherend surface 7 such as a home wall. If the intermediate body 10 without... Is attached in advance, and the tile pieces 3, 3... Are inserted into the through-hole holes 50, 50.

[Embodiment 2]
The tile unit 1 of Embodiment 2 replaces the sticking cover member 5 which is sticking prevention means of Embodiment 1, and attaches a sticking agent to the back surface of the soft resin joint material 4 as shown in FIG. For example, a release layer 8 made of fluororesin is provided. In this case, the soft resin joint material 4 may be fitted into the joint space 6 after the tile pieces 3 are attached to the base sheet 2. Of course, the timing of fitting the soft resin joint material 4 into the joint space 6 may be any of the above-described attaching methods 1 and 2.
Since the tile unit 1 of the second embodiment hardly peels off even if the back surface of the soft resin joint material 4 is in contact with the adhesive layer of the base sheet 2 and peels off easily, the same operation as that of the adhesive cover member 5 of the first embodiment. Demonstrate the effect.

[Embodiment 3]
The tile unit 1 according to the third embodiment is configured to fit the soft resin joint material 4 at a predetermined position in the joint space 6 as shown in FIG. 7 instead of the sticking cover member 5 as the sticking prevention means of the first embodiment. In the combined state, a gap s is formed between the soft resin joint material 4 and the adhesive layer on the surface of the base sheet 2. In this case as well, the soft resin joint material 4 may be fitted into the joint space 6 after the tile pieces 3 are adhered to the base sheet 2 as in the second embodiment. The timing of fitting may be any of the above attachment methods 1 and 2.
In the tile unit 1 of the third embodiment, the back surface of the soft resin joint material 4 is not originally in contact with the adhesive layer of the base sheet 2 due to the presence of the gap s, and naturally does not stick. The same effect as the member 5 is exhibited.

  By the way, the tile unit 1 of Embodiments 1-3 is mainly used for parts other than the edge of the to-be-adhered surface 7, and the joint space 6 is not provided in the left side and the lower side as mentioned above. Therefore, for example, when this is disposed on the left edge or the lower edge of the adherend surface 7, there is a possibility that it may appear unbalanced because there is no space corresponding to the joint. Therefore, preferably, the tile unit 1 corresponding to the left edge of the adherend surface 7 is provided with a vertical frame corresponding to the joint space on the left side of the adhesive cover member 5 and the soft resin joint material 4, and the adherend surface. The tile unit 1 corresponding to the lower edge of the tile 7 is provided with a horizontal frame corresponding to the joint space on the lower side of the soft resin joint material 4, and the tile unit 1 corresponding to the lower left corner of the adherend surface 7 includes The vertical frame and the horizontal frame may be added.

As mentioned above, although this invention was demonstrated about Embodiment 1-3, this invention is naturally not limited to said each embodiment. For example, in the embodiment, the tile piece 3 is formed in a square plate shape, but may be a polygon such as a circle or a triangle as well as a rectangle.
Moreover, Embodiments 1-3 may be implemented independently or may be implemented in combination as appropriate. For example, if the release layer 8 of the second embodiment and the gap s of the third embodiment are combined, even if the soft resin joint material 4 is pushed more than the setting, the adhesive layer of the soft resin joint material 4 and the base sheet 2 is used. Can be prevented.

  In the embodiment, the soft resin joint material 4 is white, but the whole may be colored in an arbitrary color, or the front and back may be different colors. By doing so, the soft resin joint material 4 can be easily replaced by changing the color of the soft resin joint material 4, and can also be easily changed by turning the soft resin joint material 4 of different colors on the front and back. .

  In addition, the soft resin joint material 4 having a size corresponding to two or more sheets of the base sheet 2 is provided with a group of tile pieces 3, 3... Attached by providing joint spaces 6 on the surface of the base sheet 2. In addition, the present invention can be applied to any tile unit having a configuration in which a plurality of sets are attached to the adherend surface 7 side by side, so that the seam portion between the tile units can be finished with a natural appearance that is not conspicuous.

  Further, in the first embodiment, the soft resin joint material 4 is accommodated in the joint space 6 only by the frictional resistance without providing the adhesive layer between the adhesive cover member 5 and the soft resin joint material 4. Since the thrust force (friction resistance) is reduced at the portion where the through frame hole 40 located at the edge of the resin joint material 4 is opened in a U-shape, the base sheet 2 and the adhesive cover member 5 depend on the adhesive layer. A weakly sticking adhesive layer (not shown) that can be attached and peeled with an adhesive force smaller than the adhesive force, for example, either the back surface of the soft resin joint material 4 or the surface of the adhesive cover member 5. Or if it forms in both and it is made to interpose a weak sticking adhesive layer between the sticking cover member 5 and the soft resin joint material 4, the soft resin joint material 4 with respect to the joint space 6 will be provided. Especially the edge part of the soft resin joint material 4 without impairing the freedom of attachment / detachment It is possible to improve the stability at joints space within 6. In addition, when providing a weak sticking adhesive layer in the surface of the sticking cover member 5, when sticking the tile pieces 3,3 ... to the base sheet 2, the through-hole hole 50 of the sticking cover member 5 is used. Since the edges may be rubbed and pulled into the edges of the tile pieces 3, the tile pieces 3, 3,... Are preferably attached to the base sheet 2 as in the second and third embodiments. Of course, there is no such restriction when a weak adhesive layer is provided on the back surface of the soft resin joint material 4. Therefore, the tile unit 1 of Embodiment 1 has a weak adhesive surface on the back surface of the soft resin joint material 4. It is preferable to provide a sticky adhesive layer.

DESCRIPTION OF SYMBOLS 1 ... Tile unit 2 ... Base sheet 3 ... Tile piece 4 ... Soft resin joint material 40 ... Through-frame hole 5 ... Adhesion cover member (adhesion prevention means)
50 ... through-hole 6 ... joint space 8 ... release layer (sticking prevention means)
s ... Gap (sticking prevention means)

Claims (7)

A base sheet having adhesive layers on both the front and back sides;
A plurality of tile pieces arranged with a predetermined joint space on the surface of the base sheet and attached to the surface of the base sheet through the adhesive layer;
It has a through frame hole that has a thickness smaller than the thickness of the tile piece and is shaped according to the arrangement of the tile piece arranged on the base sheet, and the tile piece is fitted into the through frame hole by itself. In a tile unit comprising a mesh-shaped soft resin joint material adapted to fit in the joint space,
The through-holes of the soft resin joint material are formed in a shape that fits closely with the tile pieces,
On the other hand, an adhesion preventing means for preventing adhesion of the soft resin joint material to the adhesive layer is provided between the soft resin joint material and the adhesive layer on the surface of the base sheet.
Thus, a tile unit characterized in that the soft resin joint material can be freely attached to and detached from the joint space.   The sticking prevention means covers a sticking layer corresponding to the joint space of the base sheet with a sticking cover member, and the sticking cover member is interposed between the base sheet and the soft resin joint material. The tile unit according to claim 1, wherein the tile unit is interposed.   Between the said adhesive cover member and the said soft resin joint material, the weak adhesiveness which can adhere both with the adhesive force smaller than the adhesive force by the said adhesive layer of the said base sheet and an adhesive cover member, and can peel The tile unit according to claim 2, wherein an adhesive layer is interposed.   The tile unit according to claim 1, wherein the sticking prevention means covers the back surface of the soft resin joint material with a release layer that makes sticking of the sticking agent difficult.   In the sticking prevention means, a gap is formed between the soft resin joint material and the sticking layer on the surface of the base sheet in a state where the soft resin joint material is fitted in a predetermined position of the joint space. The tile unit according to claim 1 or 4, wherein the tile unit is configured as described above.   The tile unit according to any one of claims 1 to 5, wherein the soft resin joint material has a size corresponding to two or more base sheets to which the tile pieces are attached. A plurality of tile pieces arranged in a predetermined joint space on the surface of the base sheet and attached to the surface of the base sheet;
It has a through frame hole that has a thickness smaller than the thickness of the tile piece and is shaped according to the arrangement of the tile piece arranged on the base sheet, and the tile piece is fitted into the through frame hole by itself. The soft resin joint material of a tile unit comprising a mesh-shaped soft resin joint material adapted to fit in the joint space,
The softness of the tile unit, wherein the tile unit is formed to have a size corresponding to two or more base sheets to which the tile pieces are attached, and can be mounted across a joint portion between a plurality of tile units. Resin joint material.

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