JPH04173243A - Preparation of tile with joint pattern - Google Patents

Abstract

PURPOSE:To sharply and certainly develop a joint pattern to a part or all of the outer periphery of a tile by molding the tile in a mold whose groove depth is made larger than the thickness of the first layer sheet and smaller than the sum of the thicknesses of the first and second layer sheets and removing the protruding part on the periphery of the molded tile so as to make said periphery flush with the central plane of the tile. CONSTITUTION:A joint forming groove 5 is provided to the entire periphery of a mold and the depth of the groove 5 is made larger than the thickness of the first layer sheet 1 and smaller than the sum of the thicknesses of the first and second layer sheets 1,2 to mold a tile. A tile surface material 1 and a joint part material 2 are separately compounded and kneaded to be formed into a sheet by a heating roll. A black rubber material for the rear base of the tile is compounded and kneaded to be formed into a sheet by a heating roll and three layers of the sheets 1,2,3 are successively charged in a mold having a recessed part and vulcanized under heating to perform press molding. The protruding part of the tile joint part of the molded product is ground and the joint part material 2 is made flush with the surface 1 of a tile.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for manufacturing grouted tiles composed of comb elastomer or thermoplastic resin.

More specifically, the present invention relates to a method of manufacturing a tile having a joint pattern in which the joint pattern clearly appears in part or all of the periphery of the molded tile.

(Prior Art) Conventionally, when laying tiles on a floor surface, there are tiles whose outer peripheries are finished at right angles, tiles whose outer peripheries are chamfered, etc., and there is a method of laying them in contact with each other.

(Problem to be Solved by the Invention) However, when considering the harmony of the floor surface, joints are often required between tiles. There are methods such as inserting rod-shaped joint materials or injecting liquid material and letting it harden, but all of these methods require a great deal of labor during construction.

Another method of creating a joint pattern around the tile is to apply printed matter, but this method has the disadvantage that it is easily abraded by walking.

Another method is to place a resin strip of a different color around a mold with a normal rectangular parallelepiped content, and then put a raw material sheet of a different color into the mold and mold it, but the boundary pattern collapses due to flow during molding and is not clear. There were drawbacks.

(Means for Solving the Problems) In order to solve these problems, the present inventors have arrived at the result of intensive research, and the gist is that Moreover, it is an object of the present invention to present a tile that reliably shows a joint pattern.

The present invention uses a mold in which grooves are provided on part or all of the sides of the inner surface of the mold, and a raw material sheet that is to be the center part of the tile is placed in the first layer, a raw material sheet that is to be the joint part is placed in the second layer, and further as necessary. When inserting and molding a raw material sheet to serve as a base as the third layer, the depth of the groove in the mold must be greater than the thickness of the first layer sheet and the thickness of the first layer sheet and the second layer sheet. A method for manufacturing a tile with a joint pattern, which is characterized in that the tile is molded to be smaller than the sum of the sum, and the protrusions around the periphery of the molded tile are removed so as to be flush with the central plane of the tile.

(Function) Resins that can be used in the present invention include polyvinyl chloride resins, styrene-butadiene block polymer resins, styrene-isobutylene resins, natural rubber, and diene rubbers such as styrene-butadiene rubbers. These resins are colored and used as a compound according to conventional methods.

For sheeting, a calendar, roll, extruder, compressor, etc. are used, and temperature, pressure, and other molding conditions are determined according to the usual methods for each resin.

The shape of the mold, which is a feature of the present invention, is suitable for manufacturing square, hexagonal, and hexagonal tiles, and the grooves that form the joint pattern can be provided around the entire periphery or a part of the mold. . When a plurality of tiles are laid together in a joint pattern in which a part of the periphery is grooved, the central part becomes two adjacent sides in the case of a square, or three adjacent sides in the case of a hexagon.

Since the present invention has the above-mentioned configuration, it has the characteristic that the joint pattern appears reliably and clearly on the tile surface, as shown in FIGS. 6 and 7.

(Examples) Example 1 An embodiment of the manufacturing method of the present invention will be described with reference to the drawings. In FIG. 1, 1 indicates a mold.

= 3- In the present invention, the joint forming groove 2 is provided around the entire periphery of the mold 1, and the joint forming groove 2 is configured to be recessed from the central portion 3 of the mold.

A process for manufacturing a 5 mm thick rubber tile according to the present invention using a mold having such a structure will be described.

First, regarding two types of materials: tile surface material 4 with the formulation shown in Table 1 and joint material 5 with the formulation shown in Table 2.
Blend each separately, knead, and roll 1.
The mixture was sheeted to a thickness of 5 mm, and then black rubber material 6 for tile back base was compounded according to the formulation shown in Table 3, freshly kneaded, and sheeted to a thickness of 2 ml and 11 mm using a heating roll. Each of the three layers of sheets (4° 5.6 mm) was sequentially charged into a mold having recesses around the entire periphery of the tile or a mold having recesses on two adjacent sides, and press-molded by heating and vulcanizing according to a conventional method.

The convex part 6A of the tile joint part of the molded product is polished twice, and as a third time, the fine polishing is made to the same height as the tile surface, washed with water, dried, and then waxed.

To explain the structure of the mold used here, Figure 1 shows the shape of a square mold with a side of 50 cm. In Figure 2, the part 3 is the surface pattern molding part, and the part 4 is the groove with a depth of 2 mm. This is the groove part for forming the joint pattern.

The change in the shape of a product due to joint polishing in partial press molding of the present invention will be explained based on the drawings. FIG. 4 shows the state after press forming, and FIG. 5 shows the state after fine polishing of the joint.

Table 1 Beige rubber formulation for tile surfaces Table 2 Gray rubber formulation for tile joints Table 3 Black rubber formulation example 2 for base 2 The formulations in Table 4 were made using a Henschel mixer and
The layer sheet (gray) was molded at 180°C using an extruder with a T-die to a width of 50cm and a thickness of 1.5mm.
The second layer (white) sheet was similarly extruded to a thickness of 2.5 mm and cut into a length of 50 cm.

The first layer sheet having the composition shown in Table 1 and the second layer sheet having the composition shown in Table 2 were inserted into the mold shown in FIG. 1 of Example 1, and heated to 170°C.
After pressing at 20 kg/cm2 for 10 minutes, the mold was cooled to 60°C and the laminated sheet was taken out.

This laminated sheet was finished by cutting and polishing the peripheral convex portions in the same manner as in Example 1 to obtain a tile with white joints and gray central portions.

Table 4 Compounding of vinyl chloride resin tiles (parts by weight) 1) Evogishi plasticizer 2) Ba/Zn stabilizer 3) Lubricant All manufactured by Dainippon Ink & Chemicals Co., Ltd. (Effects of the invention) As mentioned above, this book The invention made it possible to produce tiles with joint patterns using a simple manufacturing method. Furthermore, the joint pattern appears clearly and reliably, and by using the same material as the surface pattern, there is an advantage that the joint pattern is difficult to remove when walking. Furthermore, the method of the present invention allows for quick construction, shortens the construction period, and provides high design effects.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the mold shape of the present invention, Fig. 2 is a sectional view taken along line A-A' in Fig. 1, and Fig. 3 is a perspective view showing the state immediately after press molding. Figure 4 is a cross-sectional view taken along the line B-B' in Figure 3, Figure 5 is a cross-sectional view showing the state of the jointed tile after the joint polishing in Figure 4 is completed, and Figure 6 is FIG. 7 is a perspective view of a product in which joints are provided on the entire outer periphery of a tile according to the present invention. FIG. 7 is a perspective view showing a product in which joints are provided on two adjacent sides of a rectangular tile according to the present invention. 1... Tile surface 2... Joint part 3... Tile back side 4... Tile surface molding part 5... Joint part molding mold recess

Claims (1)

[Claims] 1. In a mold with grooves on some or all of the sides of the inner surface of the mold, place the raw material sheet that will become the center of the tile as the first layer, the raw material sheet that will become the joints as the second layer, and add as necessary When inserting and molding a raw material sheet to become a base as the third layer, the depth of the groove in the mold is greater than the thickness of the first layer sheet, and the thickness of the first layer sheet and the second layer sheet is equal to each other. A method for manufacturing a tile with a joint pattern, characterized in that the tile is formed into a smaller size than the sum of the tiles, and the protrusions around the periphery of the formed tile are removed so as to be flush with the central plane of the tile.