JPS59138662A - Net mold frame material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a Ney I formwork material using plastic net as a frame panel. The following will explain the case of pouring a residential cloth foundation as an example.

Conventionally, this type of formwork has used a formwork using plywood panels, a steel formwork, or the like. Both of these are bulky structures, and the former requires processing when assembling the cloth foundation formwork on site, and the latter requires the preparation of formwork of many different shapes and sizes, and its storage and transportation. There were many problems, such as requiring a large space and a lot of effort.

The present invention was made with the aim of solving the drawbacks of the conventional formwork. It can be rolled up and packed during storage and transportation, so it has a small volume and is easy to handle. When laying cloth foundation formwork, corner formwork can be used in combination with outside corners, inside corners, etc. The formwork can be assembled by bending it without cutting it, and it can be used multiple times by peeling it off and recovering it after concrete is poured.

FIG. 1 is a partially enlarged perspective view of an embodiment of the present invention, (1)
For example, is a polypropylene net with a net pitch of gmm and a thickness of 1.5 mm, (2) is a crosspiece, and net (1) is a crosspiece (2).
) to.

For example, they are nailed at intervals of 5c1n with prongs or via metal straps, and the crosspieces (2) are fixed at intervals of 15c711, for example, to constitute the net formwork material (3). Because polypropylene net has flexibility, it is used as a net formwork material (3
) can be rolled up, making it less bulky and lightweight, making it convenient for storage and transportation.

Figure 2 is a plan view showing the fabric foundation formwork assembled using this net formwork material (3), Figure 3 is a perspective view of the outside corner formwork, and Figure 4 is the inside corner formwork. In the perspective view, (4) is the outside corner formwork, (5) is the inside corner formwork, (6) is the end face formwork, (7) is the fast crosspiece, (8) is the horizontal thick timber, 19) is a plywood panel, (
l[> is a corner piece. Note that illustration of a separator that fixes the width of the formwork is omitted. Exit corner like this.

Corner formworks (4) and (5) are installed at each inner corner,
The net formwork (3) is held down by the thick horizontal timbers (8) through the crosspieces (7), and the net formwork (3) is bent with some slack at the corners to create a series of net formwork materials. (3)
Can be applied to both sides of the formwork.

In this way, concrete is poured into the assembled formwork,
After the initial hardening, the formwork is dismantled and the net formwork material (
3) is collected by pulling it off from the poured concrete. Furthermore, since the poured concrete surface has a mesh pattern, it has good mortar adhesion.

Since the above embodiment was applied to a low-height cloth foundation, it is not necessary to install a separator to restrict the width of the formwork, but it becomes necessary when the height of the formwork is high.

FIG. 5 is a partially enlarged perspective view of another embodiment of the present invention, in which a thick vertical member (2) with separator mounting holes 〇η is connected to a net (1
), the thick vertical member (6) is composed of an L-shaped steel member with a separator mounting hole (l) formed therein, and this is covered with the same resin as the net (1) and integrated. It is fixed to. If this net formwork material (3) is used, it can be used for a high formwork.

FIG. 6 is a partially enlarged perspective view of another embodiment of the present invention, in which a plastic net (1a) is overlaid on the front surface of the net (1) so that the mesh directions intersect with each other, and a vertical thick piece (b) is formed. It is fixed with the connecting pin 0→ to the hole α■ made in the arrow A,
B indicates the longitudinal direction of each mesh. In this way, leakage of mortar when concrete is poured is reduced, and the directionality of unevenness on the poured concrete surface is eliminated, which has the effect of preventing cracks in the finished mortar on the concrete surface.

FIG. 7 is a partially enlarged perspective view of still another embodiment of the present invention.
A fine-mesh plastic net (1b) is superimposed on the inside of the net (1) on the side of the double stacked vertical end pieces (6), and is integrated with the net (1) by means such as gluing. .

When this net formwork material (3) is used, the unevenness of the poured concrete surface becomes smaller and mortar finishing can be omitted.

Note that instead of the inner net (1b), a thin plastic film, cloth, nonwoven fabric, paper, or lath wire mesh may be removably fastened to the net (1), and in the case of plastic film, cloth, nonwoven fabric, or paper, The net formwork material (3) can be easily peeled off after concrete placement. In this case, in the case of cloth or non-woven paper, it may adhere to the concrete surface, so it should be applied to locations where it is acceptable for it to remain. In addition, when lath wire mesh is used, it is used to leave the lath wire mesh on the poured concrete surface, and in this case, it has the advantage of good adhesion when mortar is applied over the lath wire mesh.

In the above embodiment, a polypropylene net was used as the plastic net (1), but it goes without saying that plastics with excellent mechanical properties such as vinyl chloride resin and nylon can be widely used. In addition, the plastic net (1) can be a net braided with vinyl iron wire, or even a net made of wire mesh covered with plastic.
Since these materials have high tensile strength, they have the effect of increasing the number of times the net formwork can be used.

As explained in detail above, the present invention is composed of a net whose surface is covered with plastic at least, and thick pieces integrally fixed to the net at predetermined intervals, and has flexibility. It can be rolled up, making it convenient for storage and transportation.
In addition, it can be assembled into a temporary frame as long as it is, and
It has great practical effects, as it can be removed and reused after concrete is poured.

[Brief explanation of the drawing]

Fig. 1 is a partially enlarged perspective view of an embodiment of the present invention, Fig. 2 is a plan view showing an example of its usage state, Fig. 3 is a perspective view of the protruding corner formwork used in this usage example, Figure 4 is a perspective view of the corner formwork, Figures 5 and 6. FIG. 7 is a partially enlarged perspective view of another embodiment of the present invention. Explanation of symbols (1), (la)・Plastic net, (1b)
...fine mesh, net, (2) crosspiece, (3)
... Net formwork material, (4) ... Corner formwork, (5)
- Corner formwork, (6)... end formwork, (7) -... narrow crosspiece, (8) wide end thick lumber, (9)... plywood panel, 0
0. Corner crosspiece, (11) separator mounting hole, 04. Thick vertical end material, 01.. several hole, (14) cotter pin. Patent applicant Earthnics Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 1 Convex Figure 4

Claims (1)

[Scope of Claims] (1) A net formwork material consisting of a net whose surface is covered with plastic at least, and end pieces integrally fixed to the net at predetermined intervals. formwork material. (3) The net formwork material according to claim 1, wherein the net is made by overlapping a coarse mesh net on the end material side and a fine mesh net on the inside. (4) The net formwork material according to claim 1, wherein the net is a coarse net on the end material side and a plastic film, cloth, nonwoven fabric, paper, or lath wire mesh on the inside. . (5) The net formwork material according to claim 1, wherein the net is a wire mesh coated with plastic or a net braided with wire rods coated with plastic. (6) The net formwork material according to any one of claims 1 to 3, wherein separator mounting holes are formed in the thick end material.