JPH07213448A - Bath tub - Google Patents

Abstract

PURPOSE:To provide the bath tube which improves working environment in production processes, is excellent in heat retaining property, and hardly causes environmental problems. CONSTITUTION:The bath tub 1 is made up of a bath tub main body 2 molded out of a thermal plastic resin sheet, and of a reinforcing tank 3 which is outwardly packaged for reinforcing the bath tub main body 2, and the side circumferential section 5 of the reinforcing tank 3 is, as a whole, formed into a corrugated shape.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to bathtubs. More specifically, the present invention relates to a bathtub formed by laminating synthetic resin sheets, which has an improved work environment in the production process and excellent heat retention.

[0002]

2. Description of the Related Art In a conventional bathtub, the bathtub body is
After heating and softening an acrylic resin sheet having a thickness of about 3 mm to 10 mm, it is stretched about 4 times by vacuum forming to be formed into a desired shape. Therefore, the bathtub body alone is weak in strength (rigidity), The bathtub body is reinforced with a lining. The bathtub to be reinforced is sprayed with glass fiber reinforced plastic (FRP) on the body of the bathtub with a spray gun, and then the FRP sprayed using a hand roll is defoamed to make it smooth, and then it is dried naturally or in a drying oven. It is manufactured by curing.

This bathtub is a product that makes good use of the texture of acrylic resin and the strength of FRP.

[0004]

However, since the reinforcing tank in the bathtub is subjected to FRP spraying work and smoothing work by an operator, the working environment is likely to become a problem and the productivity is unlikely to increase. There's a problem.

Further, since the bathtub is a product using FRP as a reinforcing material, it is difficult to recycle (recycle) the discarded bathtub, and environmental problems of industrial waste treatment are likely to occur.

In view of the above circumstances, it is an object of the present invention to provide a bathtub in which the working environment in the production process is improved, the heat retention is excellent, and environmental problems are less likely to occur.

[0007]

A bathtub of the present invention comprises a bathtub body formed from a thermoplastic resin sheet, and a reinforcing tank that is externally mounted to reinforce the bathtub body. It is characterized in that at least the side peripheral portion of the reinforcing tank is partially or wholly corrugated.

The bathtub body is preferably a composite sheet of a methacrylic resin sheet and an ABS resin sheet.

The reinforcing tank is preferably made of ABS resin.

[0010]

In the bathtub of the present invention, since the corrugated outer peripheral portion of the reinforcing tank acts as a reinforcing rib, it is possible to prevent the outward bulging that occurs when water is poured into the bathtub and increase the rigidity of the bathtub. it can.

Further, the air layer formed between the bathtub body and the reinforcing tank has a heat insulating function to make it difficult to cool hot water.

Further, since it is made of a thermoplastic resin, it can be manufactured by thermoforming.
The productivity can be improved and the working environment is improved.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A bathtub according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an explanatory view showing an embodiment of the bath according to the present invention.

As shown in FIG. 1, the bathtub 1 is composed of a bathtub body 2 and a reinforcing tank 3 which is externally mounted to reinforce the bathtub body 2.

The bathtub body 2 is made by molding a thermoplastic methacrylic resin (PMMA) sheet, which has been molded by casting in advance, by heating and softening it, and forming it into a predetermined shape by vacuum molding or press molding.

The reinforcing tank 3 is composed of a flat bottom portion 4 and a side peripheral portion 5 which is entirely corrugated (corrugated). Although the bottom portion 4 is flat in this embodiment, the bottom portion 4 can also be corrugated.

The reinforcing tank 3 and the bathtub body 2 are integrated at the bottom portion 4 and the convex portion 5a via a rubber-based or synthetic resin-based adhesive, for example.

The material of the reinforcing tank 3 is ABS resin having high heat resistance (for example, 115 ° C. or higher) and high rigidity, which can be adhered to the bathtub body 2 through an adhesive,
Polycarbonate, olefin resin, modified polyphenylene ether, etc. are used. Among these resins, the ABS resin, which has particularly good adhesiveness to PMMA, is most suitable.

Although the corrugations are formed substantially vertically to the bottom portion 4, they may be formed horizontally by using a split mold. As a result, since the reinforcing tank 3 itself has high rigidity against deformation, the rigidity of the bathtub 1 can be increased.

An air layer is formed in the recess 5b between the bathtub body 2 and the reinforcing layer 3. This air layer has an adiabatic effect that delays the transfer of heat, so that it is difficult to cool the hot water in the bath.

The reinforcing tank 3 may be mixed with monofilament glass fiber or glass powder to further increase the rigidity.

Further, in this embodiment, the bathtub body 2 and the reinforcing tank 3 have a two-layer structure.
The bathtub body is not limited to a layered structure, and is, for example, a bathtub body formed by stacking two PMMA sheets and an ABS resin sheet, or a bathtub body formed by a three-layer sheet in which an ABS resin sheet is stacked on two PMMA sheets. Alternatively, an appropriate composite sheet structure can be obtained by using a reinforcing tank formed by stacking two resin sheets.

Further, in this embodiment, the waveform of the side peripheral portion 5 is
Although it is formed on the entire circumference of the side peripheral portion 5, in the present invention, for example, only the four corners of the reinforcing tank may be flattened and the remaining portion may be corrugated without impairing the rigidity of the bathtub. . As a result, it is possible to facilitate the molding of the reinforcing tank and the production of the mold.

[0025]

As described above, in the bathtub of the present invention, since the side peripheral portion of the reinforcing tank is corrugated, the rigidity of the bathtub can be increased.

Further, the air tank formed between the bathtub body and the reinforcing tank has a heat insulating function and is excellent in heat retention.

Since it is composed of a thermoplastic resin, it can be easily manufactured by thermoforming. Therefore, the working environment is improved.

Furthermore, since the bathtub can be disassembled and regenerated, the bathtub can be made suitable for environmental protection.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a bathtub of the present invention.

[Explanation of symbols]

 1 Bathtub 2 Bathtub body 3 Reinforcement tank 5 Side circumference

Claims (3)

[Claims] 1. A bathtub comprising a bathtub main body formed of a thermoplastic resin sheet and a reinforcing tank exteriorly provided to reinforce the bathtub main body, wherein at least a side peripheral portion of the reinforcing tank is partially formed. A bathtub that is formed into a corrugated shape. 2. The bathtub body is made of a composite sheet of a methacrylic resin sheet and an ABS resin sheet.
Bathtub described. 3. The bath according to claim 1, wherein the reinforcing bath is made of ABS resin.