JP3359055B2 - Roofing material and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roofing material which is thin and has a high covering ratio and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, as a roofing material, a material made of a clay-based material, a cement-based material or a slate-based material reinforced with fibers has been used by molding it into a predetermined shape. .

[0003] In general, roofing materials are required to have excellent load-bearing ability and good performance in rain. For example, clay-based and cement-based roofing materials have low strength, so that the thickness is increased to increase the load-bearing capacity. Therefore, there is a problem that the weight is increased as a result.

For example, as shown in FIG. 10, a roofing material 01 made of a clay material or the like forms a drain groove 02 at a side end of the roofing material 01 in the case of raining. It is engaged and constructed (see FIG. 11).

[0005] However, since the engaging portion is liable to be broken when it is thin, it needs to have a certain thickness, and in this respect too, the weight increases, and there are problems in terms of both raw materials and construction efficiency.

On the other hand, the slate roofing material contains a reinforcing fiber and the like, so that a relatively thin and strong material can be obtained and the load resistance is good, but the rain finish is shown in FIG. As shown in the figure, the roof material 03 is overlapped to cover the roof to prevent rain from entering.

[0007] That is, in the rain action at the side end of the roofing material 03A, the lower part a of the roofing material 03B allows rainwater infiltrated by the roofing material 03B located below to escape to the roof surface, and the upper part b has the roofing material 0 located above.
The 3C prevents rainwater from entering. The upper end c of the roofing material 03A is covered with an upper roof 03C to prevent rainwater from entering.

[0008] As described above, the slate-based roofing material has a problem that about 60 to 70% of the roofing material overlaps as a covering portion, resulting in poor covering efficiency.

[0009] On the other hand, in order to solve the rain at the side end of the roofing material, a drain plate is laid under the mating portion of the side end at the time of construction, or a shape (for example, a drain plate can be attached to the roof material). A technique has been proposed in which an engaging groove portion is formed in the side end surface of the roofing material body in the width direction in advance, and after the formation, a draining plate is attached and integrated.
No. 8).

[0010] However, it takes time and effort to attach the above draining material to the roofing material at the time of construction or before construction. In addition, manufacturing or construction has been complicated.

For this reason, as a method of integrating the draining material, a method by casting is considered.
Although the integration is relatively easy, since the pressing force cannot be applied to the mixture, the strength itself of the molded article and the integration strength with the drainage material are weak, and it is difficult to put it into practical use as a roof material.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a roofing material having a thin roofing material and a high covering efficiency, thereby improving raw materials and construction efficiency, and a method of manufacturing the same.

[0013]

According to the present invention, there is provided a roof material comprising: a roof material body; and a roof material body.
Roof consisting of a drainer provided integrally with the roof
A wood, a slit portion that is molded from a kneaded material or a flat plate-like kneaded product was preformed consisting hydraulic inorganic composition
Any one of the outer peripheral parts of the roof material body provided
Projected from the back side of the material body in the thickness direction and embedded integrally
Of a drainer with a projection
And from the back side of the slit part in the thickness direction
Drainer with protruding projections that are embedded into the roofing material
Characterized in that it is formed by integrally molding a thin sheet for use . In the above-mentioned roofing material, an engaging projection is formed in the upright direction of the projection of the draining thin plate .

The method of manufacturing the roofing material is the same as that of the roofing material itself.
The roofing material body and a thin plate for draining.
A method for manufacturing a roofing material to be formed, wherein a slit portion formed from a kneaded material comprising a hydraulic inorganic composition is provided.
That in any of the outer peripheral portion of the roofing material body, with disposing the draining thin plate having a protrusion which is embedded in the integrally protruding from the rear surface side of the roofing material body in the thickness direction of the roofing material,
Roof material protruding from the back side of the slit in the thickness direction
A thin plate for draining that has a projection embedded in the
Then, after being integrally molded under pressure, it is cured and hardened. In addition, another method of manufacturing a roofing material is the same as that of the above-described roofing material.
In the manufacturing method, the above kneaded material is preformed into a plate shape.
And features .

[0015]

When the roofing material having the above construction is constructed, the rain end can be achieved by superposing the side end of another roofing material on the draining thin plate provided at the side end of the roofing material. For this reason, the overlapping area of the roofing materials is not required, so that the covering rate is high and the construction efficiency is improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a roofing material according to the present invention will be described below with reference to the drawings.

FIG. 1A is a plan view of a roofing material according to this embodiment, and FIG. 1B is a cross-sectional view taken along the line BB. As shown in these drawings, the roofing material 10 includes a roofing material main body 11,
The roofing material body 11 is composed of a draining thin plate 12 provided integrally with a side end portion.

In the present invention, the roofing material body 11 is generally made of cement or the like, and various ceramic materials such as siliceous material, calcareous material, reinforcing fiber, aggregate, water reducing agent, thickener and the like. Hydraulic inorganic composition appropriately blended according to the purpose,
Materials preformed or kneaded by papermaking, extrusion, semi-dry molding, etc. (hereinafter referred to as "kneaded material")
Is directly molded by pressure using a mold and cured by curing.

The draining thin plate 12 is, for example, as shown in FIG.
As shown in (A), (B), and (C), the kneaded material has a projection 13 that stands upright in the thickness direction (D direction) of the roofing material body 11 having a flat shape, and a draining thin plate. Engagement ridges 15 are formed on the twelve flat plate portions 14 in the direction in which the projections 13 are erected.

The draining thin plate 12 is made of a metal or a synthetic resin and is formed by integral molding. When the roofing main body is manufactured, the draining thin plate 12 and the roofing main body 11 are interposed via the projections 13. And are integrally molded.

The water draining thin plate 12 is not limited to being integrally provided at the side end of the roofing material main body 11 as shown in FIG. good.

When a slit 17 is provided in the roofing material main body 11 as shown in FIG. 3, a draining thin plate 12 is integrally provided at a side end, and the draining thin plate 12 is provided from the back side of the slit 7. The thin plate 12 is formed integrally.

Next, an example of a method for manufacturing a roofing material will be described with reference to the drawings.

As shown in FIG. 4, the upper mold 21a, the lower mold 21b and the mold 21
c, using a molding die composed of
2 so that the flat plate portion 14 formed with the second engaging ridge portion 15 can protrude about half at the time of molding so as to straddle the upper edge of the mold 21c, and then the kneaded material 22 is thrown in (FIG. 4).
(A)). Next, it is pressurized, formed and dewatered, and at the same time as the raw sheet is formed, the draining thin plate 12 of a different material is integrally formed on one end 11a of the roofing material body 11 (FIG. 4).
(B)). After the integral molding, the protrusions 13 erected on the drainer thin plate 12 are buried in the thickness direction (D direction) of the roofing material main body 11, so that there is no possibility of separation. Thereafter, the roofing material 10 is formed and cured under predetermined conditions to obtain the roofing material 10 in which the draining thin plate 12 is integrated (see FIG. 4C).

Instead of charging the kneaded material, as shown in FIG. 5, a preformed green plate 22 is placed in a molding die composed of an upper mold 21a, a lower mold 21b and a mold frame 21c. Alternatively, the draining thin plate 12 may be integrally formed by press molding.

At the time of the above-mentioned molding, the groove 16 which engages with the engaging ridge 15 formed on the draining thin plate 12 is provided on the back surface of the other end side end portion 11b of the roof material main body 11 which is not connected to the draining thin plate 12. It may be formed on the side (see FIGS. 1 and 3). In addition, for the rain at the upper end, a groove may be provided on the upper part of the main body to prevent water from entering, and in order to ensure thoroughness, a thin draining plate integrated with the main body should be formed at the upper end of the main body. Good.

As shown in FIG. 6, the roof material 10 obtained in this manner is provided with a projection 16 for engaging a draining thin plate 11 of another roof material 10 in a groove 16 formed on the back surface side of the roof material body 11. 15 can be easily constructed by engaging the same. Since the roofing material 10 after construction is applied via the connecting thin plate 12, the rain finish is good, the number of overlaps is reduced at the time of covering, and the height (H) at the time of overlap is lower than before. At the same time (see FIG. 7), the coverage can be increased.

As a result, even if the thickness (D) of the roofing material body 11 is reduced, the load resistance is good and the covering rate is high, so that the total number of works is reduced (the covering rate is 35% for the conventional board size of 60 × 34 cm).
In the case of%, 14 sheets / m ² were required, whereas when the coverage was 70% with the same size, only 7 sheets / m ² were required. ) The weight is reduced, and the construction material and construction efficiency can be greatly improved.

For example, an engaging groove may be formed on the side end surface of the roofing material body in the width direction, and a metal plate may be engaged with the engaging groove to connect with another roofing material body. Although it is possible, the thickness of the roofing material body is inevitably increased to form the engagement groove, and the thickness of the roofing material body is usually required to be 20 mm or more in terms of load resistance, and the weight cannot be reduced as in the present invention, so that the weight increases. There is a problem.

On the other hand, when the roofing material 10 according to the present invention is formed integrally with the draining thin plate 12 of a different material, the projection 13 protruding from the back side of the roofing material body 11 is buried in the roofing material 10 so that it is not easily separated. Therefore, the thickness (D) of the roofing material main body can be made extremely thin (minimum D = about 4 mm) by reducing the height of the projections 13, and the weight can be reduced. There is. In addition, even if the roofing material is made thin, the strength of the main body is increased by fiber reinforcement or the like, so that the load resistance can be satisfied.

Next, a specific example of manufacturing a roof material will be described.

Production Example 1 Raw materials were mixed and kneaded at the following mixing ratios (omni mixer:
The resulting kneaded material was put into a molding die shown in FIG. 4 and a thin plate 12 for draining, which was disposed integrally with the side end and the slit portion of the molded body, was set and heated. Pressure dehydration molding was performed. Thereafter, the mold was removed from the mold, steam-trained at 60 ° C. for 8 hours, and the roofing material 1 having the draining thin plate 12 also in the slit portion 17 was prepared.
OA was obtained (see FIG. 8). When the draining thin plate 12 is provided in the slit portion, the slit forming frame portion may be formed in the mold 21c of the mold, and the draining thin plate 12 may be arranged in the frame portion.・ Distribution raw materials and ratio Cement 60 parts by weight Silica sand 20 parts by weight Warite knight 20 parts by weight Polypropylene fiber 1.0 part by weight Water 40 parts by weight When the obtained roofing material 10A is constructed, cracks and draining boards at the time of construction are obtained. There was no detachment, and construction efficiency improved.

Production Example 2 Raw materials were mixed and kneaded at the following mixing ratios (Erich mixer: dry type 2 minutes, wet type 5 minutes) and extruded to obtain a width of 300 mm ×
A green plate having a thickness of 10 mm and a length of 550 mm was obtained. The obtained raw plate is put into a molding die shown in FIG.
Was set and subjected to pressure dehydration molding at a pressure of 20 kg / cm ² . Thereafter, the mold was removed and steam-trained at 60 ° C. for 8 hours to obtain a roofing material 10B having thinner plates 12 for draining at the side and rear ends of the roofing material (see FIG. 9). Raw materials and proportions Cement 60 parts by weight Silica sand 20 parts by weight Warite knight 20 parts by weight Acrylic fiber 1.0 part by weight Methylcellulose 1.0 part by weight Water 24 parts by weight Even when the obtained roofing material 10B is constructed, It was good as in Production Example 1.

Comparative Example Kneading was carried out with the same composition as in Production Example 1, a draining plate was placed in a mold, and the kneaded material was poured and steam-cured as it was (6 hours at 80 ° C.).
Time), demolded, and obtained a roofing material. When the obtained roofing material was constructed, cracking occurred at the time of construction and detachment of the draining plate occurred, resulting in poor construction efficiency.

[0035]

According to the present invention, as described above, according to the present invention, a thin sheet for draining of a different material is integrally formed on the side end of the roofing material main body. The coating can be performed, and the raw material can be reduced and the construction efficiency can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a schematic view of a roofing material according to an embodiment.

FIG. 2 is a perspective view of a thin plate for draining.

FIG. 3 is a schematic view of a roofing material according to the present embodiment.

FIG. 4 is a schematic view of an example of a method for producing a roof material under pressure.

FIG. 5 is a schematic view of an example of a method for producing a roof material under pressure.

FIG. 6 is an external view showing a state in which a roof material is covered on a roof.

FIG. 7 is a side view showing a state in which roof materials are overlapped.

FIG. 8 is a plan view of a roofing material according to one embodiment.

FIG. 9 is a plan view of a roofing material according to one embodiment.

FIG. 10 is a perspective view of a prior art roofing material.

FIG. 11 is a front view showing an engaged state of a roofing material according to the related art.

FIG. 12 is a perspective view of a conventional roofing material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10, 10A, 10B Roofing material 11 Roofing material main body 12 Thin plate for draining 13 Projection part 14 Flat plate part 15 Engagement ridge part 16 Groove part 17 Slit part

Continuation of front page (56) References JP-A-4-7458 (JP, A) JP-A-60-253643 (JP, A) JP-A-3-86928 (JP, U) (58) Fields investigated (Int .Cl. ⁷ , DB name) E04D 1/00-1/30 E04D 3/00-3/40 B28B 3/02 B28B 11/02

Claims (4)

(57) [Claims] 1. The roofing material body and the roofing material body are integrally provided.
Roofing material consisting of
And a knitted product made of a hydraulic inorganic composition or a knitted product preformed in a flat plate and provided with a slit formed from a kneaded product.
On one of the outer peripheral parts of the root material body , the back surface of the roof material body
Projecting part that is buried integrally, protruding from the side in the thickness direction
A thin plate for draining is formed integrally with the slit portion, and is protruded from the back surface side of the slit portion in the thickness direction.
A thin plate for draining with protrusions embedded in the root material
Roofing material characterized by being integrally molded . 2. The roofing material according to claim 1, wherein an engaging projection is formed in a direction in which the projection of the draining thin plate stands. 3. The roof material body and the roof material body are integrally provided.
For manufacturing roofing materials composed of drained drained sheets
A law, Sri molded from the kneaded product consisting of hydraulic inorganic composition
In one of the outer peripheral parts of the roofing material body where the cut part is provided ,
A draining thin plate having a protrusion protruding in the thickness direction from the back surface side of the roof material body and integrally embedded in the roof material is provided, and the thickness direction from the back surface side of the slit portion.
With protrusions that protrude into the roof and are integrally embedded in the roofing material
A method for manufacturing a roofing material, comprising disposing a thin sheet for cutting, integrally forming under pressure, and then curing and curing. 4. The shop according to claim 3, wherein said kneaded material is preformed into a flat plate shape.
How to make root materials.