JP2819374B2 - Tank body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tub body suitable for a stainless steel bathtub or a sink such as a sink or a sink.

[0002]

2. Description of the Related Art A conventional tub of this type will be described with reference to a stainless tub as an example.
There was a problem that the design was poor due to the problem of chrome color or the cold texture or coloring characteristic of metal. For this reason, it is conceivable to improve the texture and the like by treating the inner surface of the stainless steel tub with an elastomer material, but the treatment with the elastomer film is thermally unstable and has a large contamination property. There was a problem that the feasibility was poor.

On the other hand, among the conventional bathtubs, a thermoplastic acrylic bathtub formed by a vacuum forming method or a pressurized air vacuum forming method is also known. However, this thermoplastic acrylic bathtub is inferior in boiling resistance and has an acrylic resin. When the board is vacuum formed, there is a problem that the deepest corner is extremely thin and a hole is opened when struck with a needle, etc., so expensive thermosetting to strengthen the strength Since the plastic (FRP) must be applied by a hand lay-up method or a spray-up method, there is a problem that it is not suitable for mass production including environmental pollution.

The present invention has been made in view of the above situation, and an object of the present invention is to provide a stainless steel tank body by easily applying the color and various patterns of an acrylic resin to the stainless steel tank body. An object of the present invention is to provide a tank which is easy to manufacture, has excellent mass productivity, and is environmentally friendly, which can greatly improve versatility and design.

[0005]

In order to achieve the above-mentioned object, according to the present invention, a tank body is provided with a stainless steel tank body having a substantially concave vertical cross section having a drainage hole formed at the bottom, An acrylic resin layer adsorbed on the inner surface by a vacuum forming method or a vacuum forming method, and an adhesive layer interposed between the inner surface of the stainless steel tank main body and the acrylic resin layer. It is a feature.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the accompanying drawings.

FIG. 1 shows a case where the present invention is applied to a stainless steel bathtub. A stainless steel bathtub according to this embodiment includes a stainless steel bath main body 1 having a drain hole 3 formed in a bottom portion 2 and a stainless steel bath main body 1. Acrylic resin layer 5 adsorbed on inner surface 4 of tank main body 1 by vacuum forming method or air-pressure vacuum forming method, and adhesion provided between inner surface 4 of stainless steel tank main body 1 and acrylic resin layer 5 And an agent layer 6.

The stainless steel tank body 1 is formed in a substantially concave shape in longitudinal section by the same manufacturing method as that of a known stainless steel bathtub, and therefore a detailed description thereof is omitted here.

The acrylic resin layer 5 has a thickness of, for example, 5 m.
It is desirable to use a crosslinked methacrylic resin by a continuous plate-making method of m. Of course, a methacrylic resin plate using a commonly used glass casting method or extrusion method can also be used, but in order to reliably prevent stretching cracks and the like at corners, the crosslinked methacrylic resin having a more uniform plate thickness is used. It is desirable to use

When the acrylic resin layer 5 is adsorbed on the inner surface 4 of the stainless steel tank body 1 by a vacuum forming method or a vacuum forming method, first, an acrylic resin plate 5A is set on the upper part of the stainless steel tank body 1. Then, after the peripheral portion of the acrylic resin plate 5A is firmly fixed by the fixture 7, the acrylic resin plate 5A is heated using a far infrared heater at a heater temperature of about 430 ° C. for 3 minutes to be softened.

On the other hand, the drain hole 3 of the stainless steel tank body 1
A vacuum pump 8 is connected and connected, and when the acrylic resin plate 5A is sufficiently softened, the vacuum pump 8 is reversely operated to supply a required amount of air from the drain hole 3 to the inside of the stainless steel tank body 1. Inject.

As a result, the softened acrylic resin plate 5A expands like a balloon, and then the vacuum pump 8 is operated by suction to define the acrylic resin plate 5A and the stainless steel tank main body 1. The air in the space portion is instantaneously exhausted from the drain hole 3 to the outside of the stainless steel tank body 1, and the softened acrylic resin plate 5A
It is adhered to the inner surface 4 of the stainless steel tank body 1.

As described above, the softened acrylic resin plate 5A
Is made to adhere to the inner surface 4 of the stainless steel tank main body 1 after being expanded like a balloon, whereby the thickness of the acrylic resin plate 5A can be made uniform.

The adhesive layer 6 is interposed in order to bring the acrylic resin layer 5 into close contact with the inner surface 4 of the stainless steel tank body 1, and any of the following methods can be applied as the bonding method. .

The first method is to apply a primer to the inner surface 4 of the stainless steel tank main body 1 and the acrylic resin plate 5A in advance, and then apply a urethane-based adhesive, an epoxy-based adhesive, or a silicon-based adhesive thereto. At the time of application and molding, both are adhered at the same time.

In the second method, an epoxy film adhesive is temporarily bonded to the acrylic resin plate 5A in advance, and the temporarily bonded film adhesive is heated and softened together with the acrylic resin plate 5A. Thereafter, the acrylic resin layer 5 is adhered to the inner surface 4 of the stainless steel tank main body 1 by operating the vacuum pump according to the above procedure.

The third method is to use a softened acrylic resin plate 5
After A is inflated into a balloon shape, it is brought into close contact with the inner surface 4 of the stainless steel tank main body 1, after which the operation of the vacuum pump is stopped, and a low-viscosity thermosetting adhesive is injected and filled from the drain hole 3. Thereafter, the vacuum pump is operated to instantaneously remove residual air in the space defined by the acrylic resin plate 5A and the stainless steel tank body 1 from the drain hole 3 to the outside of the stainless steel tank body 1. After the air is exhausted, the softened acrylic resin plate 5A is bonded to the inner surface 4 of the stainless steel tank main body 1.

In each of the above-mentioned bonding methods, each of the above-mentioned adhesives is hardened by the residual heat of the acrylic resin layer 5 bonded to the inner surface 4 of the stainless steel tank body 1.

Furthermore, a good smooth surface can be obtained by keeping the vacuum pump operating during the bonding.

After the acrylic resin layer 5 is bonded to the inner surface 4 of the stainless steel tank main body 1 via the adhesive layer 6 in this manner, the drain holes 3 are covered with the acrylic resin layer 5, and Since the adhesive protrudes into the drain hole 3,
The acrylic resin layer 5 and the adhesive in the portion of the drain hole 3 are removed.

The stainless steel bathtub thus obtained has an inner surface 4 covered with an acrylic resin layer 5, so that the cold texture unique to stainless steel is eliminated, the color tone can be freely selected, and the patterning can be performed. When the acrylic resin plate 5A is used, the thickness can be reduced to about 1 mm after molding. Therefore, even if the acrylic resin layer 5 is damaged, it can be polished and removed.
The effect that the durability is greatly improved is also obtained. still,
The inner surface 4 of the stainless steel tub body 1 is color-processed by an incocolor method or an etching method, and a transparent acrylic resin is adhered to the color processing, so that a high-grade stainless steel tub can be achieved.

Further, according to the stainless steel bathtub according to this embodiment, since the stainless steel bath body 1 is used as the mold material of the acrylic resin layer 5, there is no need to remove the mold, and therefore, as shown in FIGS. A reverse-tapered butt undercut type bathtub can be manufactured, and a bathtub that can be easily inserted even if the frontage size is small can be easily manufactured. In FIG. 2, reference numeral 9 denotes the stainless steel tank main body 1.
Is a synthetic resin or an adhesive filled between the inner surface 4 and the acrylic resin layer 5.

In the present invention, the acrylic resin layer 5
Instead of coating, it is conceivable to coat the inner surface 4 of the stainless steel tank main body 1 with a coating film. However, blistering and peeling are likely to occur in terms of long-term durability, and since the film thickness is thin, coating is not possible. When the film is scratched, a stainless steel color appears, which is not preferable.

[0024]

According to the present invention, as described above, the inner surface of the stainless steel tank body is covered with the acrylic resin layer, thereby eliminating the cold texture unique to stainless steel.
Since the color tone can be freely selected and the patterning becomes easy, the versatility and design of the stainless steel tank can be greatly improved, and the stainless steel tank body can also be used as a mold for the acrylic resin plate. This eliminates the need for demolding work, simplifies the manufacturing process, improves mass productivity, and easily repairs the scratches on the acrylic resin layer, so that there is an effect that durability is greatly improved.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view showing one manufacturing process of a tank according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view showing another configuration example of the tank body.

FIG. 3 is a partial cross-sectional view showing still another configuration example of the tank body.

[Explanation of symbols]

 Reference Signs List 1 stainless steel tank main body 2 bottom 3 drainage hole 5 acrylic resin layer 5A acrylic resin plate 6 adhesive layer

Claims (1)

(57) [Claims] 1. A stainless steel tank body having a substantially concave vertical cross section with a drain hole opened at the bottom, an acrylic resin layer adsorbed on the inner surface of the stainless steel tank body by a vacuum forming method or a vacuum forming method. A tank body comprising: an adhesive layer interposed between the inner surface of the stainless steel tank body and the acrylic resin layer.