JP4086110B2 - Cement mortar tile with back foot groove and molding method thereof - Google Patents

Description

  The present invention relates to a cement mortar tile in which a back foot groove of a tile made of cement mortar, particularly a back foot groove formed in a lattice shape.

  Tiles are affixed to outer walls with adhesives such as mortar, but as a means of obtaining a biting effect with this adhesive, a number of back foot grooves are formed on the back of the tiles. A method of forming a back foot ridge between the foot grooves has been adopted, and the back foot groove and the back foot ridge are generally formed of a lower mold having a rubber mold having irregularities, as shown in Patent Document 1. It is formed by filling the rubber mold with a tile material and pressing the tile material with an upper mold.

That is, by clamping the upper mold to the lower mold, a method of forming a back foot groove (ant groove) by compression of a rubber-shaped convex portion and a back foot protrusion (ant) by a concave portion on the back surface of the tile is adopted. It has been. This method is mainly used as a method for forming the back foot grooves and back foot ridges of ceramic tiles.
JP-A-7-76007

  However, cement mortar tiles, which are in increasing demand in recent years, are advantageous in that they are very inexpensive. However, the molding method using the above-mentioned lower mold with rubber mold and upper mold is costly in terms of equipment, management and process of the molding equipment. It is difficult to use for tiles made of cement mortar, which is an increase factor and is inexpensive.

  In the tile made of cement mortar according to the present invention, the back foot groove can be easily and inexpensively formed by using a net having a lattice knitting structure, and in addition, the lattice back foot having a good biting effect utilizing the lattice knitting structure of the net. It provides cement mortar tiles with grooves.

  The tile is made of cement mortar, and the tile made of cement mortar has a lattice-shaped back foot groove formed by a net of a lattice knitted structure formed by cross-knitting a cross-sectional square wire or a cross-sectional circular wire on the back surface, The lattice-like back foot groove has a deep groove formed by the wire portion of the cross knitting portion of the net and a shallow groove formed by the wire portion extending between the cross knitting portions.

  The cement mortar tile is formed by using a top-opening mold having a tile-forming cavity that is open on the top surface, filling the tile-forming cavity with cement mortar, and removing the mold after curing.

  Prior to curing of the filled cement mortar, the lattice knitted net is placed on the upper surface of the cement mortar facing the open surface of the tile forming cavity.

  And the net | network of the said lattice knitting structure is embed | buried in the surface layer of the said cement mortar upper surface, and the said net | network is peeled off after hardening or the semi-hardening of the said cement mortar.

By peeling off the embedded net, the lattice-shaped back foot groove is formed on the upper surface of the cement mortar (the back surface of the cement mortar tile formed by the tile forming cavity), and the lattice-shaped back foot groove is A deep groove formed by the wire portion of the cross knitting portion of the net and a shallow groove formed by the wire portion extending between the cross knitting portions are formed, and an edge of the opening portion of the deep groove is formed by peeling the net. Means for forming a fractured surface while destroying and expanding the cement mortar part of the part, and means for joining the adhesive for tile application with the shallow groove, the deep groove, and the fracture surface of the deep groove opening portion arranged vertically in the cross knitting portion Is configured .

  The cement mortar tile has a lattice-shaped back foot groove formed by a net having a lattice knitting structure as a back foot groove on the back surface thereof. And this lattice-like back foot groove has a structure in which shallow grooves and deep grooves are alternately coupled, and together they demonstrate a good biting effect with adhesives such as tile mortar, Ensure the adhesive strength.

  In addition, a grid-like back foot groove formed by a net-forming wire and a grid-like back foot groove having a grid-like back foot projection formed by a net of the net is easily and inexpensively formed by applying a net having a lattice knitting structure. it can.

  As shown in FIGS. 1 and 2, the net 2 for forming the sole groove of the cement mortar tile 1 has a lattice knitting structure formed by cross-knitting a large number of wires 2a and 2b.

  That is, the net 2 has a latitude wire 2a and a meridian 2b. The latitude 2a is knitted by alternately intersecting one upper surface and the other lower surface of the adjacent meridian 2b, and the warp 2b is arranged in parallel. It is a net of a regular lattice knitting structure or a diagonal lattice knitting structure knitted by alternately intersecting one upper surface and the other lower surface of the adjacent weft wire 2a.

  As shown in FIG. 2A, the wire 2a, 2b is a cross-sectional circular wire (including a cross-sectional elliptical wire) or a cross-sectional square wire as shown in FIG. 2B. It is a fine wire of ˜3 millimeters, and the mesh defined by the wires 2a and 2b has a size of about 3 to 5 square millimeters.

  On the other hand, as shown in FIG. 3A, a cement mortar 5 is filled into the tile forming cavity 3 using an upper open mold 4 having a tile forming cavity 3 that can be opened on the upper surface.

  The upper open mold 4 has a plurality of tile forming cavities 3 defined by partition walls, and the bottom surface of the tile forming cavities 3 is provided with a concavo-convex pattern for decorating the surface of the tile 1 or a dye. And can distribute pigments.

  The cement mortar 5 is a cement kneaded material in which cement and sand are mixed and hydrated and kneaded. The sand is typically river sand or mountain sand, and is mixed with mineral powders such as silica, quartzite, and diatomaceous earth. be able to. Moreover, the blending of lightweight aggregates such as perlite, foamed glass balloon, perlite, shirasu balloon and foamed styrene beans, and blending of fiber materials such as pulp fiber and glass fiber are not hindered.

  After the cement mortar 5 is cast into the tile forming cavity 3, the open top mold 4 is vibrated to make the cement mortar 5 uniform and to reach every corner of the cavity 3.

  In addition, the vibration is applied to make the cement mortar 5 dense so that the cement paste is oozed out on the upper surface 8 to form a cement paste layer 5 '.

  Next, as shown in FIG. 3B, a net 2 having substantially the same size as the upper surface open mold 4 having the lattice knitting structure prepared as the back foot groove forming means is connected to the open surface of the cavity 3 for forming all tiles. 2A, 2B, and 4 as shown in FIGS. 2A, 2B, and 4 which are placed on the upper surface of the entire cement mortar 5 facing the upper surface (the upper surface of the cement paste layer 5 ') 8, that is, the rear surface of the cement mortar tile 1 after molding. And embedded in the surface layer of the top surface of the mortar 5.

  For example, after the net is placed, the upper surface of the net 2 is leveled and pressed using a leveling spatula, and the net 2 is embedded in the surface layer of the upper surface 8 of the cement mortar 5. As a result, the cement mortar 5, mainly the cement paste layer 5 ′, is extruded into the mesh, and is embedded in the cement mortar 5 at substantially the same level as the upper knitted wire portion of the cross knitted portion 6 of the net 2. That is, the net 2 is embedded so that the upper surface of the upper knitted wire portion of the cross knitting portion 6 and the upper surface 8 of the cement mortar 5 are at the same level. By this embedment, the upper bus surface of the upper knitted wire portion of the cross knitting portion 6 is slightly exposed.

  Or although illustration is abbreviate | omitted, while burying at least the lower knitting wire part of the cross knitting part 6 of the net 2, the net 2 is embedded so that the lower part of the upper knitting wire part is buried in the surface layer of the upper surface 8 of the cement mortar 5. Buried. That is, the net 2 is semi-buried. At this time, the upper half of the upper knitted wire portion of the cross knitting portion 6 is exposed from the upper surface 8 of the cement mortar 5.

  As another example, the cement is extruded through the mesh while the vibration is applied after the net 2 is placed on the upper surface 8 of the filled cement mortar 5 and then the upper surface of the net 2 is leveled and pressed using a leveling spatula. The cement paste extruded through the mortar 5, mainly through the mesh, is scraped off. Therefore, the embedded state shown in FIGS. 2A and 2B is formed.

  Next, as shown in FIG. 3C, the net 2 is peeled off after the cement mortar 5 is cured or semi-cured.

  The net 2 is peeled off after the cement mortar 5 is hardened, and after the demolding or before the demolding. Further, after the cement mortar 5 is semi-cured, the net 2 is peeled off before demolding.

  As shown in FIG. 8, when the net 2 is peeled off, the wire material of the net 2, that is, the upper surface 8 of the cement mortar 5, that is, the back surface of the cement mortar tile 1 formed by the tile forming cavity 3, A lattice-shaped back foot groove 7 is formed by the latitude wire 2a and the meridian 2b.

  The lattice-like back foot groove 7 is a lattice groove in which the longitudinal groove and the transverse groove intersect and communicate with each other in accordance with the lattice shape of the net 2, and further, the cross knitting portion is formed in each longitudinal groove and the transverse groove by the lattice knitting structure of the net 2. The deep groove 7a shown in FIG. 5 and FIG. 6A formed by the wire portion 6 and the shallow groove 7b shown in FIGS. 5 and 6B formed by the wire portion extending between the cross knitting portions 6 are formed. The deep grooves 7a and the shallow grooves 7b are alternately arranged in the extending direction of each vertical groove and each horizontal groove, that is, in the extending direction of each weft wire 2a and each meridian 2b.

  On the back surface of the tile 1 made of cement mortar, simultaneously with the formation of the grid-like back foot grooves 7, grid-like projections 10 corresponding to the meshes of the net 2 defined by the back foot grooves 7 are formed.

  According to the above, the back foot groove 7 is formed on the back surface, and the back foot groove 7 is formed by the lattice-shaped back foot groove 7 formed by the net 2 having the lattice knitting structure formed by cross-knitting the wires 2a and 2b. Cement mortar in which the lattice-shaped back foot groove 7 has a deep groove 7a formed by the wire portion of the cross knitting portion 6 of the net 2 and a shallow groove 7b formed by the wire portion extending between the cross knitting portions 6. A tile 1 is obtained.

  Further, as shown in FIGS. 5, 6 and 7, by peeling off the net 2, the cement mortar portion at the edge of each vertical groove and lateral groove forming the lattice-like back foot groove 7 is broken, that is, a net is formed. The cement mortar part of the surface layer part along the wires 2a and 2b, mainly the cement paste layer 5 ', is destroyed, and a fracture surface 9 is formed at the same edge part. The opening of the grid-like back foot groove 7 is expanded by the breakage accompanying the peeling off of the net 2, and the expanded surface is defined as a fractured surface 9.

  As shown in FIG. 4, at least the cross knitting portion 6 is buried deeper in the surface layer of the upper surface 8 of the cement mortar 5, and as shown in FIGS. 6A and 7, the opening of the deep groove 7a formed by the same portion is formed. The edge portion, that is, the edge portion along the cross knitting portion 6 is remarkably expanded to form the fracture surface 9.

  It is possible to prevent the fracture surface 9 from being formed at the edge of the opening portion of the shallow groove 7 b formed by the wire portion extending between the cross knitting portions 6 due to the embedded depth of the net 2 described above.

  The fracture surface 9 of the groove opening cooperates with the deep groove 7a and the shallow groove 7b to enhance the bonding force (base material bonding force) with the adhesive of the tile 1 and improve the adhesive strength of the tile 1. It is valid.

The principal part enlarged plan view of a net | network. A is a principal part expanded sectional view of a net, B is a principal part expanded sectional view showing other examples of a net. A is a cross-sectional view showing a state where a top surface of the cement mortar is filled with cement mortar, B is a cross-sectional view showing a state where a net is embedded in a surface layer on the top surface of the cement mortar, and C is a cross section showing a state where the net is peeled off Figure. The principal part expanded sectional view of the state of FIG. 3 which embed | buried the net in the surface layer part of the upper surface of cement mortar. The principal part expanded sectional view of the lattice-like back foot groove | channel shape | molded on the back surface of the tile made from cement mortar by peeling of the said net | network. 4A is an enlarged cross-sectional view of the deep groove portion at the site indicated by the line A in FIG. 4A in the lattice-shaped back foot groove, and B is an enlarged cross-sectional view of the shallow groove portion at the site indicated by the line B-B in FIG. The enlarged plan view of the said deep groove part. The perspective view which shows the grid | lattice-like back foot groove shape of the back surface of tiles made from cement mortar.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Cement mortar tile, 2 ... Net, 2a ... Latent wire material, 2b ... Meridian material, 3 ... Cavity for tile formation, 4 ... Open top type, 5 ... Cement mortar, 5 '... Cement paste layer, 6 ... Crossing Knitting part, 7 ... lattice-like back foot groove, 7a ... deep groove, 7b ... shallow groove, 8 ... upper surface of cement mortar, 9 ... fracture surface, 10 ... grid-like projection.

Claims (3)

The back of the cement mortar tile has a back foot groove, and the back foot groove is formed by embedding a net of a lattice knitting structure formed by cross-knitting wires into the back surface of the cement mortar tile. consists foot groove, possess and has a deep groove that lattice-shaped back leg groove is formed in the wire section of the intersection knitting portion of the net, the shallow grooves molded with the wire portion extending between the intersection knitting section, A cement mortar having a back foot groove, wherein the edge of the deep groove has a fracture surface formed by breaking the edge cement mortar when the net is peeled off from the back surface of the cement mortar tile. Tile. In a method for forming a tile made of cement mortar, which uses a top-opening mold having a tile-forming cavity that is open on the top surface, is filled with cement mortar in the tile-forming cavity, and is demolded after curing. Using a net with a lattice knitting structure formed by cross-knitting wire rods, and placing the net on the upper surface of the cement mortar facing the open surface of the tile forming cavity, the upper surface of the net is leveled and pressed, The net is embedded in the surface layer of the mortar so that the upper surface of the upper knitted wire portion of the cross knitted portion and the upper surface of the cement mortar are approximately at the same level by the leveling presser, and after the cement mortar is cured or semi-cured Later, the net is peeled off and the top surface of the cement mortar (the back of the cement mortar tile formed by the tile forming cavity). ) Forming a grid-like back foot groove, forming a deep groove in the cross-knitted portion of the net in the lattice-like back foot groove, and forming a shallow groove in the wire portion extending between the cross-knitted portions of the net A method for forming a tile made of cement mortar having a back foot groove, wherein a fractured surface is formed by destroying a cement mortar portion at the edge of the opening of the deep groove by peeling off the net . 3. The method for forming a cement mortar tile having a back foot groove according to claim 2, wherein the wire comprises a cross-sectional circular wire or a cross-sectional square wire.

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