JPS6142473Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a grating made of synthetic resin foam that is new and has great industrial applicability.

In the past, synthetic resin grates used mainly for bathrooms were generally made of separately formed top plates and foot members that were attached with adhesive; The bonding process between the top board and the footing material is extremely complicated and increases costs.
Moreover, the manufacturing process not only limits the size of the product, but also tends to cause deterioration over time, such as peeling of the top plate and foot material or deformation of the overall shape due to the use of adhesive.

In addition, conventionally, there are products made by integrally molding synthetic resin foam such as low-expansion polystyrene, but this type of product has a major drawback in that the surface has a poor feel and is easily slippery, which can lead to danger.

The object of the present invention is to provide, at a low price, a synthetic resin grating that completely eliminates the disadvantages of the conventional products mentioned above, such as deterioration over time due to use, poor surface feel, and risk of slipping.

Next, the configuration of the present invention will be specifically explained with reference to the drawings.

Reference numeral 1 is a synthetic resin foam grating according to the present invention, in which the upper plate portion 2 and leg portions 3 are integrally molded from synthetic resin foam.

4 is a high foaming tank forming the upper part of the synthetic resin foam grating 1; 5 is a low foaming tank forming the lower part of the synthetic resin foam grating 1; The tanks 5 are stacked one above the other.

In the present invention, the boundary line 6 between the high foaming tank 4 and the low foaming tank 5 is defined by the flexibility of the surface of the upper plate part 2 and the leg part 3...
In order to maintain the strength of .

The above-described high foaming tank 4 and low foaming tank 5 can be easily formed in the process of integrally molding the synthetic resin foam grates 1 by a one-stage or two-stage injection molding method or extrusion molding method. can.

That is, low-foaming resin and high-foaming resin are simultaneously injection molded or extruded into the upper and lower parts, respectively, so that the synthetic resin foam grates 1 with the high-foaming tank 4 in the upper part and the low-foaming tank 5 in the lower part are integrated. Shape 1
A step method and, as a first step, forming a high foaming tank 4 or a low foaming tank 5 by injection molding or extrusion molding,
Next, as a second step, there is a two-stage method in which the low foaming tank 5 or the high foaming tank 4 is formed by injection molding or extrusion molding, respectively, and the upper and lower high foaming tanks 4 and low foaming tanks 5 are integrated.

Although the present invention is not limited to either the one-stage method or the two-stage method, the former method is cheaper and the latter method is easier to construct.

Both closed-cell and open-cell foams can be used as the foam, but closed-cell foam is more suitable than open-cell foam because of its greater strength and lower cost. .

Although various materials can be considered for the foam, foamed polypropylene is most suitable in terms of durability, shape retention, heat resistance, etc.

By the way, 7...7 in the drawing is leg 3.
......This is the water drain part that was missing between 3 and 3.

Note that the bottom surface of the leg portions 3...3 may be formed into an uneven shape, or a suction cup (not shown) may be fitted to the bottom of the leg portions 3...3. 3. Even if the anti-slip effect on the floor surface is expected, it does not deviate from the gist of the present invention.

As is clear from the above configuration, the effects of the present invention reside in the following points.

(a) By forming the upper part into a highly foamed tank 4, it not only feels good but also has an anti-slip effect to prevent danger.

(b) By forming the lower part into a low foaming tank 5, strength and durability are maintained and deformation is prevented.

(c) Since the high foaming tank 4 and the low foaming tank 5 are integrally molded on the top and bottom, there is no risk of deterioration over time compared to the case where the upper and lower parts are attached with adhesive, and the process is simpler. It is simple and can be manufactured with a large diameter, and the effects in that respect are great.

(d) It is also possible to mold the high-foaming tank and the low-foaming tank separately using synthetic resin and bonding the upper and lower layers with adhesive, but in that case, synthetic resin foam, especially foamed polypropylene and foamed polyethylene, it is difficult to bond both the upper and lower layers.
Since the present invention is integrally molded, this problem does not exist.

(e) It can be manufactured relatively cheaply.

(f) Two-tone top and bottom colors can be freely molded.

[Brief explanation of the drawing]

The drawings all show one embodiment of the grate according to the present invention, and FIG. 1 is a perspective view, and FIG. 2 is a side view taken in longitudinal section from the center of FIG. 1. In the drawings, 1 is a synthetic resin foam drainboard, 2 is an upper plate part, 3...3 is a leg part, 4 is a high foaming tank, and 5 is a low foaming tank.

Claims (1)

[Scope of utility model registration request] The upper plate part 2 and the leg parts 3...3 are integrally molded with synthetic resin foam, and the upper and lower parts of the boundary line 6 at an appropriate height position of the lower layer of the upper plate part 2 are made of highly foamed material, respectively. A drainboard made of synthetic resin foam, comprising a tank 4 and a low foaming tank 5.