JPH10183871A - Roof tile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a good ventilation by integrally laminating a plurality of flat plate-like members through an adhesive, and cutting the intermediate part of the eaves side of the lowermost layer member of the plurality of the plate-like body. SOLUTION: Cement is cured and hardened as main material, a roof tile 2 composed of two plate-like body is shaped, and the upper layer side plate-like body 30 and the lower layer side plate-like body 40 of the roof tile 2 are vertically integrally laminated and shaped. The upper layer side plate-like body 30 is protruded approximately 5mm longer than the lower layer side plate-like body 40 toward the eaves side to form an overhang part 7 over the entire length of the lower side 3b of the eaves side end of the roof tile 2. Furthermore, a ventilation notch part 23 is provided in the neighborhood of the upper side 3a of the roof tile 2, and a gap is provided between the upper side 3a of the roof tile 2 and a roof backing at a part corresponding to the ventilation notch part 23 without bringing the upper side 3a of the roof tile 2 into contact with the roof backing on the entire length. Thus, decay of the roof substrate and moisture over the entire house upper structure can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to roof tiles for roofing by laying them on a roof base in the form of a plane or the like.

[0002]

2. Description of the Related Art Conventionally, as this type of roof tile, the lower surface is formed as a flat surface, and when it is tilted and mounted on one plane while being supported by the side of the building,
A configuration in which the ridge side is in contact with the plane over the entire length is known.

[0003]

Therefore, in the roof tile having the above-mentioned conventional construction, when a plurality of roof tiles are arranged on the roof foundation so as to partially overlap each other and the roof is roofed, the roof tiles are placed on the back side of each roof tile. However, there is a tendency for a closed space surrounded by roof tiles and a roof base to be formed, and this closed space is substantially closed to the outside air. For this reason, if for some reason (especially during the rainy season, etc.) the interior of the enclosed space or the overlapping boundary surface between the roof tiles becomes wet,
Since the ventilation with the outside air is not performed efficiently in the closed space or the overlapping boundary surface between the roof tiles, the moisture in the closed space or the overlapping boundary surface between the roof tiles is retained for a long time. A phenomenon occurs, and as a result, the decay of the base plate or the waterproof sheet as a roof base may progress quickly, or a problem such as the entire upper structure of the house may be moistened, and there is room for improvement. .

SUMMARY OF THE INVENTION [0004] In view of the above-mentioned drawbacks of the roof tiles of the conventional configuration exemplified above, it is an object of the present invention to provide a device in which a space surrounded by the roof tiles and a roof foundation or an overlapping boundary surface between the roof tiles has moisture. Even if it takes, the ventilation with the outside air is performed relatively efficiently to provide a roof tile capable of relatively quickly eliminating the moisture, thereby reducing the decay of the roof foundation and the moisture throughout the entire upper structure of the house. Prevention or suppression.

[0005]

[Means for Solving the Problems]

<1> In order to achieve the above object, the roof tile according to claim 1 of the present invention is formed by integrally laminating a plurality of generally flat plate-like members via an adhesive, and Among the plate-like bodies, the uppermost layer member is formed mainly by cement and cured and hardened, and further, when tilted and mounted on one plane while being supported by the ridge side, An intermediate part of the lowermost member of the plurality of plate-like members is cut off at an intermediate part of the ridge side so that a non-contact part that does not contact the plane is formed in the middle of the ridge side. And

[0006] With this construction, when a plurality of roof tiles are arranged on the roof foundation so as to partially overlap each other, and the roof is roofed, the space surrounded by the back surface of each roof tile and the roof foundation becomes the roof tile. In the same way as the ridge side and the back side of the roof tiles adjacent to the eave side, a state is obtained that communicates with the space that has also occurred, and in principle these spaces extend from the ridge end to the eaves end Are connected to each other, and of course, this communication space extends to the outside through the space behind the roof tile on the eaves side, so the space for each roof tile is closed independently Instead of being a space, the entirety of the lattice-shaped space formed by gathering the spaces on the back side of the roof tiles and communicating with each other becomes a ventilation path. For this reason, even if the inside of the space or the overlapping boundary surface between the roof tiles is moist, the outside air is relatively efficiently ventilated with the outside air at the eaves-side end portion through the ventilation path including the lattice-shaped space. Also, even if rainwater enters the space on the back side of the roof tile or the overlapping boundary surface between the roof tiles from the capillary boundary surface formed between the stacked roof tiles, the roof side of the roof tiles Without being blocked by the eaves, an effect of being drained to the outside from the eaves-side end through the ventilation passage formed of the lattice-shaped space (which also serves as a water passage) can be obtained. Moreover, in the roof tile formed as described above, since a plurality of generally flat plate-like members are integrally laminated with an adhesive therebetween, the flat roof tile described above is used. In addition, it is possible to relatively easily realize a difficult operation with a single-layered flat roof tile in which a part of the back surface is cut out while maintaining the flat roof tile form.

That is, in a flat roof tile having a conventional structure constituted by a single layer instead of a laminated layer, the operation of cutting out a part of the back surface involves the following manufacturing difficulties. For example, when molding the roof tile fabric, after curing, when performing the notch operation by scraping the back surface in a state where curing has progressed to some extent, when the roof tile fabric has a degree of hardness In other words, it is difficult to manage and judge whether the cutting process can be performed when the degree of curing has progressed, and it is possible to perform processing without damaging the structure of the roof tiles while suppressing the wear of the grinding blade. On the other hand, when the notch operation is performed by a method in which a projection corresponding to the notch is provided on a molding press, a portion corresponding to an upper portion of the notch, and a portion which is eventually thinned, and the like. There is a problem that the density difference between the thick parts of the product is likely to lead to product defects,
Either method did not provide sufficient work efficiency and product yield. In contrast to the flat roof tile of the conventional structure, in the roof tile according to the first aspect of the present invention, a plurality of plate members are integrally laminated via an adhesive to form the roof tile. A part of the lower layer member of the plate-like member is molded into a cutout shape (this operation can be relatively easily performed by punching a plate-shaped material, etc.), and the upper layer member is formed. If it is laminated with a notch-free portion, a configuration in which a notch is provided only on the lower side in the thickness direction of the roof tile can be obtained relatively easily and at a high yield (where the notch is continuously cut from the upper surface to the lower surface). If it is desired to realize the above configuration, the conventional one-layer configuration can be easily achieved and ventilation can be obtained, but this reduces the waterproofness, narrows the range of the area where the nail hole can be formed, and increases the roof. If nail holes are provided too close to the contour of the tile, There arises the disadvantage of factors such as reduced). Furthermore, since the plurality of plate-like bodies to be laminated are each formed in a simple plate shape in an independent form, it is easy to form a plate-like body having a uniform density over the whole. .

<2> In order to achieve the above object, the roof tile according to claim 2 of the present invention is formed by integrally laminating a plurality of generally flat plate-like members via an adhesive, and Of the plurality of plate-like bodies, the uppermost layer member is formed of cement as a main material and cured and cured, and when placed on one plane, between the one plane and the ridge side from the eaves side. A part of the lowermost layer member of the plurality of plate-like bodies is cut away from the eaves side to the ridge side so that an individual ventilation path penetrating through is formed.

With this configuration, when a plurality of roof tiles are arranged on the roof foundation so as to partially overlap each other and the roof is roofed, the space surrounded by the back surface of each roof tile and the roof foundation is each A state in which the roof tile itself communicates with the outside air at the eaves side end is obtained, and the spaces behind the roof tiles are also connected to each other by the grid-like communication space formed on the back side of the roof tiles. As a result, a state where the roof tiles communicate with each other in the direction connecting the side and the eaves side is obtained, and as a result, the space for each roof tile does not become an independent closed space, and the entire lattice-shaped space is a roof eaves. At the side edges and at the eaves side edges of the individual roof tiles, there is a ventilation path communicating with the outside air or the outside. For this reason, even if the overlapping boundary surface between the roof tiles in the space becomes wet, the eaves of the entire roof are passed through the ventilation path formed of the lattice-shaped space and the individual ventilation paths formed in the individual roof tiles. Relatively efficient ventilation with outside air at the side edges or the eaves edge of individual roof tiles. Also, even if rainwater enters the space on the back side of the roof tile or the overlapping boundary surface between the roof tiles from the capillary boundary surface formed between the stacked roof tiles, the roof side of the roof tiles Without being blocked by the eaves, an effect of being drained to the outside from the eaves-side end through the ventilation path formed of the lattice-shaped space can also be obtained. Moreover, in the roof tile formed as described above, since a plurality of generally flat plate-like members are integrally laminated with an adhesive therebetween, the flat roof tile described above is used. In addition, the operation of notching a part of the back surface while maintaining the flat shape of the roof tile can be realized relatively easily.

That is, in the case of a flat roof tile composed of a single layer rather than a laminate, the operation of notching a part of the back surface involves difficulties in the manufacturing process. In the case where the notch operation is performed by scraping the back surface in a state where curing has progressed to some extent after curing, when the degree of hardness of the roof tile fabric is increased, that is, when the curing is advanced, If it is carried out, there is difficulty in management and control as to whether it can be processed in a state where the wear of the grinding knife is suppressed and it does not damage the structure of the roof tile. When the notch operation is performed by a method in which a projection corresponding to the notch is provided, a density difference occurs between an upper portion of the notch, which is finished to be thinner, and a portion having another thickness, resulting in a product. Has the problem that Sufficient work efficiency and product yield also take any of the methods could not be obtained. For the above,
In the roof tile according to the second aspect of the present invention, since a plurality of plate members are integrally laminated via an adhesive to form a roof tile, a member corresponding to the lower layer side of these plate members is formed. Partly cut into a notched shape (this operation can be done relatively easily by punching out a plate-shaped dough, etc.), and if it is laminated with the uncut upper layer, only the lower layer The configuration provided with the notches can be obtained relatively easily and with a high yield. Furthermore, since the plurality of plate bodies to be laminated are each formed in a simple plate shape in an independent form, it is easy to form a plate body having a uniform density over the whole.

<3> In forming the roof tile according to claim 1 or 2, the plate-like bodies to be laminated may be plate-like bodies having similar properties formed by the same method. And laminating plate-like bodies formed by a dry method, or laminating plate-like bodies formed by a wet method, and the like. The uppermost layer member is constituted by a plate-like body obtained by a dry method of molding while adding water to a powder material mainly containing cement, and at least one of the other plate-like members laminated on the uppermost layer member. One layer may be constituted by a plate-like body obtained by a wet method of forming a slurry-like material in which a powder material mainly composed of cement and water are mixed in advance or a paste-like material.

According to this structure, the roof having excellent characteristics as a whole can be obtained by arranging the plate by the dry method and the plate by the wet method at the right place in one roof tile. It is convenient to be able to provide tiles. In other words, the plate-shaped body made by the dry method has relatively low elasticity but low porosity and high resistance to frost damage and water resistance. If it is used for the upper layer, it is easy to exhibit the effect of securing the frost resistance and water resistance of the entire roof tile, while the plate-shaped body by the wet method is
Since it has low frost damage resistance and low water resistance but high elasticity, it is provided on at least one of the other plate-like bodies laminated on the uppermost layer member, that is, a layer which is relatively hard to be exposed to outside air. In this case, the effect of securing the elasticity of the entire roof tile can be easily exerted, and damage to the roof tile due to, for example, stepping can be easily prevented.

According to the first aspect of the present invention, even if rainwater enters a space surrounded by a roof tile and a roof basement, the rainwater is drained to the outside relatively easily. Even if the overlapping boundary surface between the roof tiles in the space becomes humid, ventilation with the outside air is performed relatively efficiently, so that the roof tiles capable of eliminating the moisture relatively quickly can be uniformly distributed throughout. It can be provided while maintaining the form of a flat roof tile provided with. As a result, it is possible to prevent premature decay of the roof base and moisture over the entire upper structure of the house, and it is relatively easy to cut out a part of the back surface while maintaining the flat form of the roof tile. The effect that it can be realized is obtained.

In the invention according to the second aspect of the present invention, even if rainwater enters a space surrounded by a roof tile and a roof base, the rainwater is drained relatively easily to the outside, and the rainwater or the roof tiles Even if the overlapping boundary surfaces are humid, ventilation with the outside air is performed relatively efficiently. (Especially with regard to the ventilation with the outside air, the communication with the outside air at the eaves end of each roof tile can be obtained. Therefore, a higher efficiency can be expected as compared with the invention according to claim 1), and the roof tile capable of eliminating the moisture relatively quickly can be a flat roof tile having a uniform density throughout. Provide while holding. As a result, it is possible to prevent premature decay of the roof base and moisture over the entire upper structure of the house, and it is relatively easy to cut out a part of the back surface while maintaining the flat form of the roof tile. The effect that it can be realized is obtained.

According to the third aspect of the present invention, in addition to the effects obtained by the first or second aspect,
By the effective combination of the plate-shaped body formed by the dry method and the plate-shaped body formed by the wet method, it is possible to obtain an effect of providing a roof tile having high frost damage resistance, high dimensional accuracy of the upper surface, and high breaking resistance due to stepping.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the roof tile 2 viewed from the front side, and FIG. 2 is a perspective view of the roof tile 2 viewed from the back side. The roof tile 2 generally shows a flat plate shape as a whole, but in detail, as can be understood from FIGS. 1 and 2, a thick portion arranged near the center in a plan view and a basically flat portion The shape is a combination of a thin portion arranged near the edge when viewed. 3 is a schematic plan view of the roof tile 2, and FIG. 4 is a schematic front view. In the schematic plan view, the hatched portion is a thin portion having a thickness of about 6 mm, and the blank portion is a thin portion having a thickness of about 1 mm.
The 2 mm thick portion and the cross hatched portion are the thinnest portions having a thickness of about 4.5 mm. The roof tile 2 is formed by bonding and cementing two plate-like bodies having a thickness of basically about 6 mm, that is, an upper layer-side plate 30 and a lower layer-side plate 40, which are made of cement as a main material and cured and cured. FIG. 5 shows an upper layer plate 30 and a lower layer plate 4 which are integrally laminated by being bonded from above and below with an agent.
FIG. 4 is a perspective view of a state before the lamination of No. 0 is viewed from the front side. As shown in FIG. 5, the thickness of each of the upper plate 30 and the lower plate 40 is the same except for the thinnest channel portion (about 4.5 mm) formed in the lower plate 40. It is constant at about 6 mm.

[Roof Tile Shape] As shown in FIGS. 1, 2 and 3, the overall shape of the roof tile 2 is basically rectangular in plan view, and this rectangle is the upper side of the ridge side. 3
a, the lower side 3b, the right side 4a, and the left side 4b of the eaves side each have a total of four generally linear sides. FIG. 6 is a plan view showing a part of a roof that is roofed in a plane as a whole by lining up a plurality of roof tiles 2 from the eaves side to the ridge side and from left to right. As shown in FIG. 6, the roof tiles 2M, 2N, and 2P that are arranged side by side with each other are arranged on the right side of the arbitrary roof tile 2 and the left side of another roof tile 2 different from this. By superimposing the determination part 6 on each other, an aggregate having a constant thickness of about 12 mm as a whole and extending left and right is formed. In other words, the right decision part 5 refers to a thin part having a thickness of about 6 mm extending from the ridge side to the eaves side along the right side 4a, and the left decision part 6 extends along the left side 4b. Refers to a thin part with a thickness of about 6 mm extending from the ridge side to the eaves side,
Each of the left and right decision parts 5 and 6 is formed simply and simultaneously by the operation of laminating the upper plate 30 and the lower plate 40 by shifting them by about 50 mm to the left and right, and bonding them together. . Returning to FIG. 6, the left split part 6 of the roof tile 2N shown near the center is superimposed on the right split part 5 of the left roof tile 2M, and the right split part of the roof tile 2N is overlapped. On the part 5, the left side decision part 6 of the right roof tile 2P is superimposed. These superposed structures have a function of preventing water or the like from entering from a gap between the roof tiles 2.

In addition, a left end portion of the right offset portion 5 (having a width of about 51 mm) of the upper side plate 30 of the roof tile 2 has
The channel forming notch 18 having a width of about 9 mm is provided, except for the water climbing prevention step 18a left in a region 50 mm from the upper side 3a. It extends 9 mm further to the left of part 5,
The width of the thin portion is about 60 mm. Incidentally, the width of the left decision part 6 is about 50 mm. That is, as shown in FIG. 6, when the roof tiles 5 are arranged side by side from left to right while overlapping the left and right decision parts 5, 6, for example, the roof tiles 2P
Then, the left side 4b (or the left decision part 6) is not the end face of the channel forming notch 18 of the roof tile 2N,
Since it is positioned in contact with the right end of the water-climbing step 18a, the elongated channel forming notch 18 linearly extends from the ridge side to the eaves side to form a channel-shaped space. This channel-like space is the roof tile 2
Since the left and right boundaries between the top parts of the
Provides an aesthetic effect that adds a regular tone to the entire thatched roof. The water-climbing step 18a also has a function of preventing rainwater from flowing back to the ridge side through the channel-shaped space formed on the roof and reaching the back surface of the roof tile. Furthermore, the thinnest part having a thickness of about 4.5 mm provided at substantially the center of the right
Water channel 1 having a width of about 30 mm and a depth of about 1.5 mm and formed continuously from upper side 3a to lower side 3b
9 The water channel 19 itself has an open channel shape on the upper surface side. This is because when the right split portion 5 and the left split portion 6 are vertically overlapped, the tunnel is continuous from the upper side 3a to the lower side 3b. To form a communication hole,
It has a function to promote drainage of rainwater that has once entered between the right phase change section 5 and the left phase change section 6 for some reason.

Further, the roof tile 2 has a number of alignment marks, which are used as guides for positioning the roof tiles 2 when the roof tiles 2 are arranged on a roof base and the roof is roofed, in plan view. It is formed at a position that can be checked. That is, the upper side 3a
A center alignment mark 12 and an underlap alignment mark 13, a center alignment mark 11 on the lower side 3 b, and an overlap alignment mark 16 on the right side 4 a.
However, an underlap alignment mark 17 is formed on an edge portion of the upper layer side plate 30 adjacent to the right offset portion 5, and an overlap alignment mark 14 and an underlap alignment mark 15 are formed on the left side 4b. I have. An example of the positioning will be specifically described. In the roof tile 2, since the roof tiles are basically superposed and installed in order from the eaves side to the ridge side and from the left to the right side, for example, the roof tile 2J in the center of FIG.
Is located on the roof tile 2N near the eaves, which has already been fixed.
It can be determined based on 2P. That is, the roof tile 2
The top, bottom, left and right positions of J are determined by matching the center alignment mark 11 on the long side 3b of the eaves side of the roof tile 2J with the underlap alignment mark 15 of the roof tile 2P.
And, the angular position of the roof tile 2J, that is, the roof tile 2N
The parallelism with the roof tile 2P is determined by, for example, setting the overlap alignment mark 16 on the right side 4a of the roof tile 2J to the upper side 3 of the roof tile 2P.
It is obtained by matching with the edge of a or the underlap alignment mark 13. Next, FIG. 7 is a partial cross-sectional view of the XX ′ cross section of FIG. 6 as viewed from the right side of the roof, that is, from the right side 4a side of the roof tile 2. As shown in FIG.
Regarding the arrangement from the eaves side to the ridge side, the roof tiles 2 are arranged side by side in such a manner that thick parts having a thickness of about 12 mm are superposed, not thin parts.

As shown in FIG. 7, at the end of the roof tile 2 on the eaves side, that is, the lower side 3b, the upper side plate extends over the entire length of the thicker part of the lower side 3b (that is, excluding the settlement part). The overhang portion 7 is formed by projecting the body 30 by 5 mm toward the eaves side from the lower plate body 40. Since the overhang portion 7 is provided, for example, rainwater flowing down from the ridge side to the eaves side on the surface of the roof tile 2J, after reaching the lower side 3b, climbs the overhang portion 7 toward the ridge side. No upper plate 30
From the lower edge of the eaves side of the roof tile, and if it falls, it moves to the surface of the roof tile 2P and starts flowing there. Here, the reason that rainwater does not climb the overhang portion 7 toward the ridge side is because the overhang portion 7 has an eaves side, that is, an upward slope, and the overhang portion 7 is an exposed portion. However, since it does not have a capillary structure, it is naturally difficult for rainwater or the like to climb the overhang portion 7 toward the eaves side in a natural state.
If the overhang portion 7 is not provided and X-
If the lower side 3b in the X ′ cross section extends straight from the upper layer plate 30 to the lower plate 40,
For example, rainwater that flows down from the ridge side to the eaves side on the surface of the roof tile 2J reaches the lower side 3b and then travels along the straight lower side without leaving the roof tile 2J, and the boundary surface between the roof tile 2J and the roof tile 2P. Along the eaves from the eaves side toward the ridge side by capillary action, in other words, return along the back side of the roof tile 2J and return to the eaves side, the space between the roof tile and the roof foundation, or
Water or moisture is likely to be brought into the boundary surface where the roof tiles are overlapped.

Further, as best shown in FIGS. 2 and 3, near the upper side 3a of the roof tile 2, there are provided ventilation notches 23, 23 opened toward the upper side 3a. . FIG. 8 is a partial cross-sectional view of the YY ′ cross section of FIG. 6 as viewed from the right side of the roof, that is, from the right side 4 a of the roof tile 2.
As shown in FIG. 8, the ventilation notches 23, 23
Is provided, the upper side 3a of the roof tile 2 does not contact the roof base over its entire length, and at a portion corresponding to the ventilation notches 23, 23, a gap ( This means that the cross section viewed from the eaves side is a horizontally long tunnel-shaped gap). Since the horizontal tunnel-shaped gap is formed on the back surface of all the roof tiles 2 that have a roof, for example, when the roof is completely covered, the horizontal tunnel-shaped gaps communicate with each other. As a result, a tunnel-shaped ventilation path extending in a grid along the surface of the roof foundation that communicates from the vicinity of the eaves to the vicinity of the building as a whole can obtain air circulation over the entire roof foundation, The moisture proof effect of the space between the roof tiles can be achieved. In addition, the ventilation path also serves as a ventilation path that promotes drainage of rainwater or the like that has once entered between the roof tile 2 and the roof foundation to the eaves side.

A pair of nail holes 20, 21 are arranged along the upper side 3a on the ridge side of the roof tile 2 from the center.
The nail holes 20 and 21 are used to fix the roof tile 2 to the base plate 100 with nails. The line segment YY ′ in FIG.
Since it has passed above, the cross section of the roof tile 2J in FIG. 8 shows a nail hole 21 and a nail inserted into the hole 21 and penetrating into the base plate 100. As can be seen from FIGS. 8 and 2 and FIG. 3, the ventilation notches 23 and 23 are provided with the nail holes 20 and 2 respectively.
It has a wide area enough to include the position 1 with a margin, and therefore it is sufficient to form a thin nail hole in which the head of the nail is hooked only in the upper plate 30. That is, the nail hole 2 is also temporarily provided in the lower plate-shaped body 40.
In the case where a thin nail hole having the same diameter as 0, 21 is provided, when the upper plate 30 and the lower plate 40 are bonded together, the nail hole in the upper plate 30 and the lower plate 30 are attached. Although the necessity of precisely matching the nail holes on the 40 side may occur, which may cause a decrease in manufacturing efficiency, the above-mentioned function that the cut-out portions for ventilation 23, 23 also serve eliminates this difficulty.

[Method of Manufacturing Roof Tile] As described above, the roof tile 2 is basically made of two plate-like members each having a thickness of about 6 mm, which is formed mainly of cement and cured and cured. ,
That is, the upper plate-shaped body 30 and the lower plate-shaped body 40 are vertically aligned via an adhesive, and are integrally laminated. In the roof tile 2, both the upper plate 30 and the lower plate 40 are made of a plate obtained by a dry method in which water is added to a powder material mainly composed of cement while adding water. ing.

[Dry Forming] FIG. 9 is a schematic view showing a method of manufacturing the roof tile 2, and is a schematic process diagram of the dry method employed for the upper plate 30 and the lower plate 40 (based on cement as the main material). An example of a dry method of forming a powder material while adding water to the powder material is included. Hereinafter, regarding the manufacturing method of the roof tile 2,
The following description focuses on the manufacturing process of the upper layer side plate 30. First,
Silica sand (51% by weight), cement (46% by weight), and pulp fiber (3% by weight) as aggregates were automatically weighed from the raw material hoppers 50a, 50b, 50c, and then mixed with a mixer 5.
In step 2, dry mixing is performed to obtain a dry cement material 80a. Dry cement material 80 discharged from the mixer 52
a is placed on the end of the moving endless conveyor 51.
The dry cement material 80a includes a baffle 53 extending from above.
By the first rotation
Pressure is applied by a pressure roller 54, and then a sprinkler 56
As a result, water for cement hardening (the amount of water is 1% with respect to the total amount of the dry cement material 80a and the colorant 80b to be described later).
After being sprayed (so that the weight becomes 0% by weight), a compression operation is further applied by the rotating second pressure roller 58.
Next, a colorant 80b obtained by well mixing silica sand (49.5% by weight), cement (50% by weight) and a coloring pigment (0.5% by weight) is sprayed by a material spraying device 59,
The third pressing roller 60 further performs a pressing operation and a patterning operation. The layered body 81 thus formed
Is a rectangular plate 82 of an appropriate size
And natural curing for several days.

[Shape cutting] The cured rectangular plate 82
Is punched out by a punch press 64 or the like, to obtain a plate-shaped body 83 having a required size and shape as the upper layer side plate-shaped body 30. One surface of the plate-shaped member 83 is waterproofed by the application roller 66 or the like, and then dried by the dryer 68 to form the upper plate 30. The lower plate-shaped body 40 may be formed basically in the same manner as the upper plate-shaped body 30. However, in the lower plate-shaped body 40, there are no nail holes, the water channel 19 and the ventilation notches 23, 23.
There is a slight difference in shape from the upper-layer plate-shaped body 30 such as the point having

[Joining] An acrylic emulsion 85 (an example of an adhesive) was applied to the lower surface of the upper plate-like body 30 and the upper surface of the lower plate-like body 40 obtained in the above steps, and bonded by pressing. Thereafter, undercoating with an acrylic emulsion is further performed using a coating roller 71 or the like, and the undercoat is placed in an autoclave 73 to perform high-temperature and high-pressure steam curing of the cement contained in the upper plate 30 and the lower plate 40. By the high-temperature and high-pressure steam curing by the autoclave 73, the adhesive strength by the acrylic emulsion also reaches a sufficient level. Furthermore, if the top coat is applied by the application roller 74 and the like and the drying is completed by the dryer 76, the roof tile 2 is completed. As the cement for the dry cement material 80a and the colorant 80b, ordinary Portland cement or alumina cement can be used.

[Alternative Embodiment] <1> In the above embodiment, the plate-like bodies to be laminated are formed by a dry method. However, instead of the dry method, a powder material mainly composed of cement and water are used. May be formed by a wet method of molding a slurry-like or paste-like material in which is mixed in advance.

<2> In the above-described embodiment, the upper plate-like body 3
0 and both the lower plate 40 are formed by a dry method, but the uppermost member is formed by adding water to a powder material mainly composed of cement, as in the above embodiment. It is composed of a plate-like body obtained by a dry method, and the lowermost layer member is formed by a slurry method in which a powder material mainly composed of cement and water are previously mixed, or a wet method of molding a paste-like material. You may. With this configuration,
A roof tile having both the advantages of a dry plate having high frost damage resistance and high water resistance and the advantages of a wet plate having high elasticity can be obtained. In addition, as an example of the wet method, a film-shaped material slurry horizontally pulled out from a lower part of a slurry box with a liquid-permeable belt conveyor or the like is formed by vacuum dehydration from the back side of the belt conveyor, and cured and cured. The film-like material is drawn up by a flow-on method or a net that moves continuously from below the liquid level of the thin slurry to the liquid level, and then wound up around a making roll and molded.
A paper-making method for curing and curing is applicable.

<3> In the above embodiment, the upper side plate-like body 3
The roof tiles are formed by laminating a total of two plate-like members, that is, a plate member 0 and a lower layer-side plate-shaped member 40, but a total of three or more plate-like members may be integrally laminated via an adhesive. .

<4> When a plurality of plate-like bodies each made of cement as a main material and cured and cured are laminated together via an adhesive, the surface of the plate-like bodies and the plate-like bodies are laminated. A dissimilar material layer may be interposed between each other to be integrated with the plate-like body. For example, if a water-resistant resin film such as a polyethylene sheet is used as the dissimilar material layer and the back surface of the roof tile is covered with this resin film, or if the resin film is interposed between the plate-like bodies, The effect of improving the water resistance of the entire roof tile by suppressing the permeation of water into the tile, and the improvement of the mechanical strength of the entire roof tile and the improvement of the fracture resistance to flying objects can be expected. FIG.
The boundary surface between the upper plate 30 and the lower plate 40 of the roof tile of FIG. 1 and the surfaces of the left and right decision parts 5 and 6, and
An example is shown in which polyethylene sheets 90, 90 are adhered to the entire back surface of the lower layer side plate-like body 40 by heat fusion. FIG.
0-b shows the state of the roof tile 2 'completed by joining the upper plate 30 and the lower plate 40 of FIG. 10-a with an adhesive. In addition, by using an aluminum laminate sheet or the like as the dissimilar material layer and covering the back surface of the roof tile with this or interposing between the plate-like bodies, in addition to water resistance, the roof tile is permeable. This is advantageous because it can improve the reflection and heat insulation properties against infrared rays and the like, and can also be expected to have an effect of suppressing a rise in the temperature of a house, particularly in summer.

<5> FIGS. 11 and 12 (these are perspective views corresponding to FIGS. 1 and 2 showing the above embodiment).
1 and 2, instead of the ventilation notches 23, 23 provided in the roof tile 2 shown in FIG. 1 and FIG. A part of the lowermost layer member 40 may be cut away from the eaves side to the ridge side so that ventilation notches 230, 230 penetrating from the eaves side to the ridge side are formed therebetween. By implementing in such a form, when a plurality of roof tiles are arranged on the roof foundation so as to partially overlap with each other and the roof is roofed, the back surface of each roof tile and each of the spaces surrounded by the roof foundation are removed. In addition, a state that communicates with the outside air at the eaves end of the roof tile itself is obtained, and the space behind the roof tiles is also
Due to the grid-like communication space formed on the back side of the roof tile,
Since a state of communication with each other in the direction connecting the ridge side and the eaves side of the roof can be obtained, as a result, the space for each roof tile is not an independent closed space, and the entire lattice-shaped space is At the eave-side end of the roof and at each eave-side end of each roof tile, there is a ventilation path (also serving as a water path depending on the situation) communicating with the outside air or the outside. For this reason, the state of communication with the outside air at the eaves side end of each roof tile can be obtained, and a higher ventilation efficiency with the outside air can be expected as compared with the roof tile shown in the above embodiment. In this alternative embodiment, the lower plate-like body is composed of three laterally divided members 41, 42, 43, and an adhesive is applied to the upper plate-like body 30 while leaving a horizontal interval therebetween. These intervals are formed by the cutouts 230 and 2 for ventilation.
It will function as 30.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a perspective view of a roof tile according to an embodiment of the present invention.

FIG. 2 is another perspective view of the roof tile of FIG.

FIG. 3 is a schematic plan view of the roof tile of FIG. 1;

FIG. 4 is a schematic front view of the roof tile of FIG. 1;

FIG. 5 is a perspective view showing a state before stacking the roof tile of FIG. 1;

FIG. 6 is a schematic plan view showing an example of a roof roofed by the roof tiles of FIG. 1;

FIG. 7 is a partial cross-sectional view taken along line X-X ′ in FIG. 6;

8 is a partial sectional view taken along line Y-Y 'in FIG.

FIG. 9 is a schematic side view showing a manufacturing method of the roof tile of FIG. 1;

FIG. 10 is a side view of a roof tile according to another embodiment of the present invention.

FIG. 11 is a perspective view of a roof tile according to still another embodiment of the present invention.

FIG. 12 is another perspective view of the roof tile of FIG. 11;

[Explanation of symbols]

 2 Roof tile 3a Upper side 3b Bottom side 4a Right side 4b Left side 5 Right side part 6 Left side part 19 Water channel 20 Nail hole 21 Nail hole 23 Notch for ventilation

Claims (3)

[Claims] 1. A plurality of generally flat plate-like members (30, 40) are integrally laminated via an adhesive, and an uppermost layer member (30, 40) of the plurality of plate-like members is formed. 30)
When cement is used as a main material and is formed by curing and curing, and further, while being supported by the ridge side (3a), and is placed in an inclined state with respect to one plane, it is located at the center of the ridge side (3a). A roof tile in which an intermediate portion of a ridge side (3a) of a lowermost layer member (40) of the plurality of plate-like members is notched so that a non-contact portion that does not contact the plane is formed. 2. A plurality of generally flat plate-like members (30, 40) are integrally laminated via an adhesive, and an uppermost layer member (30) of the plurality of plate-like members is formed. 30)
The cement is used as a main material, and is formed by curing and curing, so that when placed on one plane, an air passage that penetrates from the eaves side to the ridge side is formed between the plane and the one plane, so that the plurality of sheets are formed. A roof tile in which a part of the lowermost member (40) of the plate is cut out from the eaves side to the ridge side. 3. The uppermost member (30) is formed of a plate-like body obtained by a dry method of forming the cement-based powder material while adding water to the powdery material, and is laminated on the uppermost member. A plate-like body obtained by forming at least one layer (40) of another layer member to be formed by a wet method of forming a slurry-like or paste-like material in which a powder material mainly containing the cement and water are previously mixed. The roof tile according to claim 1 or 2, wherein