JP2006007756A - Rubber made waterproof formed body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rubber made waterproof formed body used for waterproofing a recess with a complicated shape and requiring an experienced skill for laying or jointing a sheet capable of being formed into any shape without the need of a mold or an extrusion molding machine, if required. <P>SOLUTION: The rubber made waterproofing formed body 3 is used for applying a water proofing work, a water shielding work or the like to a substrate and is made by previously cutting/folding a vulcanized rubber sheet 7 with a thickness of 0.5-3.0 mm to the shape of an installation site and joining it by interposing an adhesive 12 in a joining part to keep the shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a rubber waterproof mold used for waterproofing small-sized recesses such as a water tank used for storing rainwater underground in a garden or a park, or a pond provided on the roof of a building. The present invention relates to a mold that can cope with a complicated shape and is advantageous in terms of cost.

  Conventionally, when constructing a reservoir, etc., waterproofing work is performed so that water does not leak into the base of the pond. When waterproofing a vast recess, a waterproof sheet made of a material such as rubber is brought to the site in the form of a roll and laid, and then joined to the site to create the shape of the recess and waterproof the entire surface of the recess Such work is being done.

  As a method of joining the waterproof sheet in the field, if it is a waterproof sheet made of a thermoplastic material, for example, heat sealing with hot air, or welding by melting the material with a solvent is performed, rubber sheet In the case of using the sheet, the sheets are bonded to each other with a rubber adhesive interposed in the bonding portion.

  However, the sheet joining work at this site is not limited to methods such as heat fusion, welding, and adhesive, and is not a simple work that can be done by an inexperienced person. However, there was a problem that it took a long time for the joining work or a joining failure occurred and the water leaked.

  For example, in Patent Document 1, when a waterproof sheet is laid on the rooftop of a building or the like, in a complicated portion such as a protruding corner portion, a corner portion, or a pipe around which a flat waterproof sheet cannot be laid as it is, Disclosed is a technology that makes it easier to join a waterproof sheet by forming a shaped mold integrally by extrusion molding, press molding, etc., and bringing it into the field and mounting it at a complicated location. ing.

Japanese Utility Model Publication No. 7-10159

  By using such a mold, it is possible to simplify a sheet joining operation that has conventionally required skill, such as joining of complex parts, and problems such as poor joining are less likely to occur.

  On the other hand, there are cases where expensive equipment such as expensive molds and extruders are required to mold the mold, and if many molds of the same shape are required, the equipment should be installed. It is possible to make molds by arranging them, but in the case where the shape is slightly different for each case or where the size of the mold is large, such mold Could not make. Therefore, the situation continued to depend on skilled workers as usual.

  Therefore, the present invention is for waterproofing a recess having a complicated shape and requiring skill in laying and joining sheets, and does not require an expensive mold or an extrusion molding machine. Accordingly, an object of the present invention is to provide a rubber waterproof mold whose shape can be freely set.

  In order to solve the above problems, in claim 1 of the present invention, a vulcanized rubber sheet having a thickness of 0.5 to 3.0 mm is cut and bent into a shape that matches the shape of the construction site in advance at the factory. Then, a rubber waterproof mold having a shape maintained by vulcanizing and joining the unvulcanized rubber tape between the joining portions is obtained.

  According to the second aspect of the present invention, a rubber waterproof mold using a reinforcing material embedded in rubber as a vulcanized rubber sheet used for the rubber waterproof mold.

  As in the present invention, the vulcanized rubber sheet is cut and bent as necessary to form a predetermined shape, and the desired shape is maintained by adhesively bonding it with an unvulcanized rubber tape. Since it does not require a mold or an extruder, it can be easily accommodated even if it has a special shape depending on the individual case. is there.

  According to the second aspect of the present invention, the strength can be improved by using a rubber sheet in which a reinforcing material is embedded, and a durable rubber waterproof mold can be obtained.

  FIG. 1 is a perspective view showing an example of a rubber waterproof mold according to the present invention, and FIG. 2 is a cross-sectional view of a water storage tank in which the rubber waterproof mold is arranged. FIG. 3 is a cross-sectional view after the filling material is installed, and FIG. 4 is an enlarged perspective view showing the press-worked portion of the rubber waterproof mold. FIG. 5 is a perspective view of the filling materials to be installed in the water tank.

  The water tank 1 is used in the basement of a parking lot or a park, and in order to use the land above the water tank 1 for other purposes, the water storage space of the water tank 1 includes, for example, the water tank 1. In order to use the upper part of this for another application such as a parking lot, the present invention relates to a water storage tank in which a filling material having a gap is disposed so as to withstand pressure from above.

  The water storage tank 1 is formed with a recess 2 as shown in FIG. 2 in the base, and the filling material 5 is placed in a water storage space 4 surrounded by a rubber waterproof mold 3 made of a water shielding sheet. Installed and formed.

  First, as shown in FIG. 1, a rubber waterproof mold 3 formed in advance in accordance with the shape of the water storage tank 1 is disposed in the recess 2. The rubber waterproof mold 3 has a rectangular parallelepiped tank shape having a bottom surface 6 and a side surface 7, and one of the side surfaces 7 includes an inflow pipe joint portion 8 connected to an inflow pipe for supplying water to the water storage tank 1, and A drain pipe joint portion 9 connected to a drain pipe for discharging overflowed water is formed.

  The inflow pipe joint portion 8 and the drain pipe joint portion 9 are provided with a through-hole in one side surface 7 of the rubber waterproof mold 3 and projecting a cylindrical object to the outside, and the inflow pipe introduced from the outside And can be connected to a drain pipe.

  In addition, a water intake area 10 having a depth larger than that of other places is formed in a part of the recess 2. By making the water intake area deeper than other places, almost all of the water stored in the water storage tank 1 can be pumped up. In that case, a portion corresponding to the water intake area 10 of the waterproof waterproof article 3 is similarly provided with a water intake portion 11 that protrudes from the bottom surface 7 and has a greater depth than the other portions.

  Subsequently, the filling material 5 is installed inside the rubber waterproof mold 3. By installing the filling material 5, the water tank 1 can withstand the pressure from above, and the water tank can be used for other purposes such as a parking lot.

  When the filling material 5 is stacked up to the height of the water storage space 2 as shown in FIG. 5, the stacked filling material 5 is covered with a waterproof sheet. The waterproof sheet may be a separate sheet from the rubber waterproof mold 3 or may be molded in advance with the rubber waterproof mold 3 in advance.

  Next, the gap between the side surface 7 of the rubber waterproof mold 3 and the recess 2 is backfilled, and the top is covered with soil and finished in the same manner as a normal base. In the place corresponding to the water intake area, the water stored in the water storage tank 1 can be taken from outside by installing a manhole separately.

  The rubber waterproof mold 3 is made of a water-impermeable material made of rubber such as EPDM, butyl rubber, chloroprene rubber or a blend thereof, and although the material is not limited, Considering that it is transported from the factory etc. to the site, it is a lightweight sheet material, and it is bent along the corners such as the exit corner and the entrance corner, so about 0.5 to 3.0 mm made of EPDM etc. It is preferable to use rubber having a thickness.

  Also, if the sheet is made of rubber only, for example, when used as a water tank mold for storing a large amount of water, it may be uneasy in terms of strength, or if it is used in a place where leveling is not sufficient, it may be caused by protrusions such as stones. Since there is a problem of damage, a reinforcing material embedded in rubber may be used in order to give strength so as not to break easily.

  Examples of the reinforcing material that can be used include base fabrics and short fibers. Reinforcing material is embedded to impart tear resistance to the water-impervious sheet and to increase impact resistance. Materials include polyethylene, polyester, polyvinyl chloride, polypropylene, polyamide, aromatic polyamide, and polyvinyl alcohol. , Weaving films made of organic synthetic resins such as polyurethane, yarns and flat tapes made of synthetic resins, or simply crossing and heat-sealing the overlapping parts to form a net, Examples thereof include those in which a net is formed by a coarse nonwoven fabric, and other fabrics made of inorganic fibers such as glass fibers or metal fibers. Among them, it is preferable to use a woven fabric made of polyester fiber because it is high in strength, excellent in heat resistance and water resistance, and is inexpensive because it is a general-purpose product. Further, it is preferable to use one having an elongation of 15 to 35% and a strength of about 100 to 700 N / cm.

  If the elongation of the base fabric is less than 15%, there will be a problem that the thread will break when it is subsidized. If it exceeds 35%, the sheet on the slope will be slippery and easy to stretch. As a result, the stress of the rubber becomes large and the durability is affected. Further, if the strength is less than 100 N / cm, there is a problem that physical properties such as tearing impact are weak due to insufficient strength, and if it exceeds 700 N / cm, the rigidity of the sheet becomes too high and the workability at the time of laying the sheet deteriorates. Therefore, it is not preferable.

  In order to have the physical properties as described above, yarn numbers of 300d to 1500d, a thickness of 0.25 mm to 0.6 mm, and a density of 25/5 cm to 40/5 cm are preferably used.

  In the case of the rubber waterproof mold 3 shown in FIG. 1, a rectangular rubber waterproof mold is formed by folding a single sheet. Between the adjacent side surfaces 7, the sheet is folded as shown in an enlarged view in FIG. 4, and the folded portion is hot-pressed with an adhesive 12 made of unvulcanized EPDM, butyl rubber, chloroprene rubber, or the like. Is adhered by.

  When making a rectangular parallelepiped shape, not only the method of folding the sheet between the side surfaces as described above, but also a method of forming a notch and joining them. Furthermore, the shape of the rubber waterproof mold is not limited to a rectangular parallelepiped, and various shapes can be adopted in accordance with the shape of the recess 2.

  Although the filling material 5 is not particularly limited, for example, a resin material such as polypropylene, high-density polyethylene, hard vinyl chloride, unsaturated polyester having a shape having a large number of bent portions 20 and supports 30 as shown in FIG. For example, in the case of a rectangular parallelepiped, the planar shape is 300 to 4000 mm, preferably 500 to 2000 mm square and the thickness is about 100 to 300 mm. These blocks can be used.

  In the case of the block filling material 5 shown in FIG. 5, by stacking the folded portions 20 in different directions, a gap is formed by the folded portions 20 to ensure a water storage rate.

  As described above, by using the rubber waterproof mold 3 molded in advance in a factory or the like as a water-impervious layer surrounding the water storage tank 1, it is possible to easily construct the water-tight layer 3 regardless of the skill level of the operator. It is possible to make a water tank 1 that does not easily cause problems such as poor appearance and has a good quality. In addition, since the number of workers can be reduced, it can be said that this is a construction method that is quite advantageous in terms of cost.

  For example, it can be used for storage tanks to store rainwater underground while using the ground for other purposes such as parking lots and gardens, saving labor costs and shortening the work period, and avoiding human construction errors. Can be prevented.

It is a perspective view which shows an example of the rubber waterproof type | mold thing of this invention. It is sectional drawing of the water storage tank which has arrange | positioned the rubber waterproofing type thing. It is sectional drawing after installing a filling material in a rubber waterproofing type thing. It is an expansion perspective view which shows the press work part of a rubber waterproof type thing. It is the perspective view of the place which piled up the filling material installed in a water tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water storage tank 2 Recess 3 Rubber waterproofing type 4 Water storage space 5 Filling material 6 Bottom face 7 Side face 8 Joint part for inflow pipe 9 Joint part for drain pipe 10 Intake area 11 Intake part

Claims (2)

  By cutting and bending a vulcanized rubber sheet having a thickness of 0.5 to 3.0 mm into a shape that matches the shape of the construction site in advance at the factory, and joining the unvulcanized rubber sheet through the joint A rubber waterproof mold characterized in that it retains its shape. The rubber waterproof mold according to claim 1, wherein a vulcanized rubber sheet in which a reinforcing material is embedded is used.

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