JP4535197B1 - Tile unit - Google Patents

Abstract

The present invention provides a tile unit that has a high adhesive strength between a connecting sheet and a tile and that also has a high adhesion strength to a wall surface of the tile, and a manufacturing method thereof.
A tile unit 20 is formed by connecting back surfaces of a plurality of tiles 21 arranged in alignment via joint gaps by connecting sheets 25 and 26. The edge of the connecting sheet 25 protrudes into the groove 23 by a predetermined length t. The adhesive 27 adheres to the end of the connecting sheet 25 protruding into the groove 23 and also adheres to the inlet side of the side surface 23 f of the groove 23.
[Selection] Figure 1

Description

  The present invention relates to a tile unit formed by connecting a plurality of tiles with a connecting sheet, and more particularly to a tile unit in which a connecting sheet is attached to the back surface of the tile.

  A tile unit that connects multiple tiles by bonding a connecting sheet such as paper to the back of the tile with an adhesive so as to bridge between adjacent tiles. Since it is effective for reducing construction work and shortening the construction period, it has been widely used for construction of interior and exterior tiles.

  In Japanese Utility Model Publication No. 35-29442, as shown in FIGS. 3 (a) and 3 (b), a tile 4 having an annular recess 1, a short concave groove portion 2 and a long concave groove portion 3 is arranged vertically and horizontally leaving a joint gap 5. A tile unit (continuous wall tile) in which thin fabric cloth pieces 6 are bonded with adhesive glue across the back surfaces of adjacent four corners of each tile 4 is described.

  In Japanese Utility Model Laid-Open No. 58-134528, as shown in FIG. 4, a connecting member 12 such as a woven fabric or a non-woven fabric is adhered to the back surface of the tile 14 or 14 with an adhesive 13 such as mortar. The tile unit which connected mutually is described. A part of the adhesive 13 protrudes into the groove 15.

  Tiles are generally manufactured by dry molding, in which molding clay is filled into a molding die and pressure-molded. At the time of this dry molding, the molding pressure at the inner peripheral edge of the molding die is reduced due to the leakage of clay from the gap between the molds and the deformation of the mold. , The density is low.

  Therefore, the upper and lower molds are preliminarily provided with an inclination called “crimping gradient” so that a sufficient molding pressure is also applied to the outer peripheral edge of the molded body. For this reason, the both sides of the tile are formed with slopes of slanted surfaces which are inclined from the front surface or the back surface toward the side peripheral edge. Conventionally, the crimping gradient of the back surface of the tile is about 3.8 to 9.1 °, and the width of the crimping gradient portion is about 1 to 10 mm.

  In the tile unit manufactured using tiles with a back surface formed with a slope, the paper used for connecting the tiles is not stretchable. Is in a state of being lifted, and the adhesive area between the back surface of the tile and the paper is small. Therefore, it is important to improve the adhesion between the connecting sheet made of paper and the tile back surface on a flat surface other than the crimping gradient.

Jikosho 35-29442 Shokai 58-134528

  In the tile unit disclosed in the Japanese Utility Model Publication No. 35-29442, the thin fabric cloth piece 6 is projected so as to cover the end portion 7 of the long concave groove portion 3. Thus, when the thin fabric cloth piece 6 protrudes greatly in the long concave groove portion 3, when the tile unit is attached to the wall surface with the mortar, the mortar hardly enters the end portion 7, and the attaching strength of the tile is lowered.

  In the tile unit of Japanese Utility Model Publication No. 58-134528, the adhesive protruding into the groove 15 covers the entire side surface of the groove 15. Therefore, when the tile unit is attached to the wall surface with mortar, the mortar hardly adheres to the side surface of the groove, and the tile attaching strength is lowered.

  When the connecting sheet is separated from the corner edge of the groove on the back surface of the tile to eliminate the sticking out of the adhesive, the bonding area between the connecting sheet and the back surface of the tile becomes small, and the adhesive strength between the connecting sheet and the tile is low. Become.

  An object of the present invention is to solve the above-mentioned conventional problems, and to provide a tile unit that has a high adhesive strength between a connecting sheet and a tile and also has a high tension strength to a tile wall.

The tile unit according to claim 1 is a tile unit in which a plurality of tiles are arranged in parallel, and adjacent tiles are connected to each other by a connection sheet bonded to the back surface of the tile with an adhesive, and the tile unit protrudes from the back surface of each tile. Part and a groove between the convex parts, and the connecting sheet is a tile unit bonded to the convex part, and a part of the edge of the connecting sheet straddles the groove . The groove protrudes into the groove , and the groove is a dovetail groove that becomes wider toward the back side, and the adhesive protruding from the connection sheet is formed on the back surface of the edge of the connection sheet, and the inlet of the groove. It adheres to the side surface of the side.

  A tile unit according to a second aspect is characterized in that, in the first aspect, the edge of the connecting sheet protrudes from the groove by 1/100 to 1/2 of the groove width.

  The tile unit according to claim 3 is characterized in that, in claim 1 or 2, the adhesive is attached to a range of 30 to 1000 μm from a corner edge on the inlet side of the side surface of the groove. is there.

  A tile unit according to claim 4 is the tile unit according to any one of claims 1 to 3, wherein the groove extends from one end edge of the tile to the other end edge, and the plurality of tiles pass through the joint gap. The connecting sheet is bonded only to a convex portion facing the joint gap.

  In the tile unit of the present invention, a part of the edge of the connecting sheet protrudes (approaches) into the groove, and the adhesive protruding from the connecting sheet is formed between the back surface of the edge of the connecting sheet and the side surface of the groove. It adheres to the groove entrance side. As described above, when the edge of a part of the connection sheet protrudes into the groove and the adhesive adheres to the intersection corner between the connection sheet and the side surface of the groove, the adhesive strength of the connection sheet to the tile may be considerably increased. Admitted.

  In this tile unit, the length of the edge of the connecting sheet protruding into the groove is preferably 1/100 to 1/2 of the groove width, particularly preferably 1/100 to 1/3, which is small. It does not close the end of the long groove recess as in Japanese Utility Model Publication 35-29442, so when the tile unit is applied to the wall surface, the mortar and adhesive are fully filled in the groove, Tightening strength is secured.

  Further, in this tile unit, the adhesive that protrudes into the groove is attached only to the groove entrance side of the groove side surface, and the bottom side of the groove side surface is not covered with the adhesive. Therefore, when this tile unit is attached to the wall surface, the mortar enters the groove and comes into direct contact with the bottom of the side surface of the groove, so that the strength of the attachment to the wall surface of the tile is ensured.

  It should be noted that the groove extends continuously from one edge of the tile to the other edge so that the groove on the back surface of the tile is sufficiently filled with mortar when the tile unit is applied. preferable. That is, as in the aforementioned Japanese Utility Model Publication No. 35-29442, if the groove does not reach the edge of the tile, when the tile unit is attached to the wall surface, air accumulates in the groove, and the mortar or adhesive and the groove inner surface There is a possibility that the contact area becomes small and the tile sticking strength decreases. On the other hand, if the groove is continuous from one edge of the tile to the other edge, when mortar or adhesive enters the groove, the air in the groove is expelled from the edge of the tile, The whole is filled with mortar or adhesive densely, and the tension strength of the tile is high.

It is the reverse view and sectional drawing of the tile unit which concerns on embodiment. It is a reverse view of the tile unit which concerns on another embodiment. It is the reverse view and sectional drawing of the tile unit which concerns on a prior art example. It is sectional drawing of the tile unit which concerns on another prior art example.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 (a) is a rear view of the tile unit 20 according to the embodiment, and FIG. 1 (b) is a sectional view taken along the line BB of FIG.

  The tile unit 20 is formed by connecting a plurality of ceramic tiles 21 arranged in alignment via joint spaces by connecting sheets 25 and 26. The tile 21 has a square shape, and a convex portion 22 extending from one end edge to the other end edge is provided on the back surface thereof, and a groove 23 is formed between the convex portions 22. The groove 23 is a dovetail whose width becomes wider toward the back side.

  Of the four sides of the tile 21, a portion along the side extending in a direction parallel to the extending direction of the convex portion 22 and the groove 23 is the convex portion 22. In addition, in the convex part 22 along this edge | side, the inclined surface 22a called a "crimping gradient" is provided so that height may become small as the edge side of the tile 21 is provided.

  Except for the inclined surface 22a, the top surface of each convex portion 22 is a flat surface having the same height. The tiles 21 are aligned with the convex portions 22 and the grooves 23 in parallel.

  Connection sheets 25 and 26 are bonded to the back surface of each tile 21 so as to straddle the joint gap 24. The connection sheets 25 and 26 are provided with a thermoplastic adhesive layer on the back surface of paper. Kraft paper is suitable as the paper, and the thickness is preferably about 100 to 900 μm, particularly about 200 to 500 μm. As the adhesive, various thermoplastic synthetic resins such as EVA, epoxy, urethane, acrylic, vinyl chloride, modified silicon, olefin, polyurethane, polystyrene, etc., or a resin based mixture thereof are suitable. It is. The thickness of the adhesive layer is preferably about 30 to 1000 μm, particularly about 80 to 160 μm. However, the adhesive layer may be a thermosetting adhesive layer.

  In this embodiment, the connecting sheet 25 is substantially square, and a small hole 25a having a diameter of about 2 to 16 mm is provided at the center thereof. The small holes 25a are for allowing the mortar to pass when the tile unit 20 is attached to the wall surface.

  The connection sheet 26 has a rectangular shape in which the connection sheet 25 is divided in half.

  In order to manufacture the tile unit 20, for example, a predetermined number of tiles 21 are arranged on the joint frame so that the back surfaces of the tile units 20 are up, and the connecting sheets 25 and 26 are directed downward. Thus, it arranges on the back surface of the tile 21, presses the connection sheets 25 and 26 on the heavy metal flat plate or joint frame back surface, and bonds them by heating in a curing furnace.

  In this tile unit, the connecting sheet 25 is disposed at the joint gap intersection where the corners of the four tiles 21 face. The connecting sheet 25 is bonded to the convex portion 22 as shown in FIG. The edge of the connecting sheet 25 protrudes into the groove 23 by a predetermined length t.

  The connecting sheet 25 is bonded to the back surfaces of the tiles 21 and 21 so as to connect the sides of the tile 21 facing the long side of the convex portion 22. The edge of the connecting sheet 25 protrudes into the groove 23 adjacent to the convex portion 22 by a length t.

  A connecting sheet 26 is bonded to the back surfaces of the tiles 21 and 21 so as to connect the sides of the tiles 21 facing the end portions of the convex portions 22 and the grooves 23. The connecting sheet 26 is adhered to the convex portion 22 and protrudes into the grooves 23 and 23 on both sides of the convex portion 22 by a length t. The protruding length t of the sheets 25 and 26 into the groove 23 is preferably about 1/100 to 1/2 of the width of the groove 23, particularly about 1/100 to 1/3.

  As described above, when the connecting sheets 25 and 26 are pressed against the tile 21 to bond the connecting sheets 25 and 26 to the tile 21, part of the adhesive of the connecting sheets 25 and 26 protrudes into the groove 23. The protruding adhesive 27 adheres to the end of the connecting sheet 25 protruding into the groove 23 and also to the inlet side (upper side in FIG. 1B) of the side surface 23f of the groove 23. The height h of the adhesion area of the adhesive 27 to the groove side surface 23f is preferably about 30 to 1000 μm, particularly about 80 to 160 μm.

  Since the adhesive 27 adheres to both the protruding portion of the connecting sheets 25 and 26 and the inlet side of the groove side surface 23f, the attachment strength of the connecting sheets 25 and 26 to the tile 21 becomes high. .

  In this embodiment, the protruding width t of the connecting sheets 25 and 26 into the groove 23 is slight. Further, the groove 23 reaches the both end edges of the tile 21. Further, the adhesive 27 that protrudes into the groove 23 at the time of manufacturing the tile unit adheres only to the inlet side of the groove side surface 23f, and does not adhere to the back side of the groove side surface 23f. Is exposed. Therefore, when the tile unit 20 is attached to the wall surface with the mortar, the mortar is easily and sufficiently filled in the groove 23, and the filled mortar firmly adheres to the exposed fabric surface of the groove side surface 23f. For this reason, the tension strength to the edge of each tile 21 is also high. The present invention is particularly suitable for application when a tile unit is stretched on a wall surface with mortar.

<Another embodiment>
In the tile unit 20 of FIG. 1, the connecting sheet 26 is disposed near the center of the tile 21 in the width direction (perpendicular to the convex portion 22), but like the tile unit 20A of FIG. You may arrange | position along the edge part of this width direction, ie, the outer edge of the tile unit 20A.

  Further, in the tile units 20 and 20A, the tiles 21 are arranged so that the convex portions 22 and the grooves 23 are parallel to each other, but like the tile units 20B and 20C in FIGS. 2B and 2C. Furthermore, the direction of some tiles 21 may be orthogonal to the other tiles 21.

  2 denote the same parts as in FIG.

  Each of the above embodiments is an example of the present invention, and the present invention may be configured other than illustrated. For example, the tile may be rectangular.

  Hereinafter, examples and comparative examples will be described.

Example 1
In FIG. 1, a porcelain tile having a side length of 45 mm, a thickness of 7 mm, a convex portion 22 width of 6 mm, an inclined surface 22a width of 0.5 mm, a groove 23 width of 7 mm, and a groove 23 depth of 1.5 mm. Using. The width of the joint gap 24 is 5 mm.

  As the connection sheet 25, a square kraft paper having a side length of 20 mm (thickness: 200 μm) and an EVA adhesive as an adhesive having a thickness of 150 μm were used. The diameter of the central small hole is 4 mm. As the connection sheet 26, the connection sheet 25 cut in half was used.

  A predetermined number of tiles 21 are arranged on the joint frame such that each back surface is on top, and each connection sheet 25, 26 is arranged on the back surface of the tile 21 so that the adhesive layer faces downward, The connecting sheets 25 and 26 were pressed with a heavy metal flat plate and bonded by heating in a curing furnace. In this tile unit 20, t = 1.5 mm and h = 150 μm.

The tensile strength of the connecting sheet 25 was measured under the condition that both ends of the unit were chucked and pulled up and down at a speed of 3 mm / min, and the average was 1.52 N / mm ² .

Example 2
In Example 1, the tile unit 20 was manufactured in the same manner except that the length of one side of the connection sheet 25 was 18 mm. In this tile unit, t = 0.5 mm, h = 150 μm, and the tensile strength of the connection sheet 25 was 1.47 N / mm ² on average.

Comparative Example 1
In Example 1, the tile unit 20 was manufactured in the same manner except that the length of one side of the connection sheet 25 was 16 mm. In this tile unit, t = −0.5 mm (not reaching the corner edge of the groove 23), h = 0 μm, and the average tensile strength of the connection sheet 25 was 0.73 N / mm ² .

  From the above Examples and Comparative Examples, it was confirmed that the adhesive strength of the connecting sheet to the tile was increased according to the present invention.

20 Tile unit 21 Tile 22 Convex part 23 Groove 24 Joint gap 25, 26 Connecting sheet 27 Adhesive

Claims (4)

A tile unit in which a plurality of tiles are arranged in parallel, and adjacent tiles are connected to each other by a connection sheet bonded to the back surface of the tile by an adhesive,
A convex portion and a groove between the convex portions are provided on the back surface of each tile.
In the tile unit bonded to the convex portion, the connection sheet,
A part of the edge of the connecting sheet protrudes into the groove so as not to straddle the groove ,
The groove is an ant groove that becomes wider toward the back side,
The tile unit, wherein the adhesive protruding from the connection sheet is attached to the back surface of the edge of the connection sheet and the side surface on the inlet side of the groove.   2. The tile unit according to claim 1, wherein the edge of the connection sheet protrudes from the groove by 1/100 to 1/2 of the groove width.   3. The tile unit according to claim 1, wherein the adhesive is attached to a range of 30 to 1000 μm from a corner edge on the inlet side of the side surface of the groove.   4. The groove according to claim 1, wherein the groove extends from one end edge of the tile to the other end edge, and a plurality of the tiles are arranged via joint gaps. The tile unit, wherein the sheet is bonded only to a convex portion facing the joint gap.

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