JP2002256607A - Drainage tank and flexible resin sheet used for the drainage tank - Google Patents

Abstract

(57) [Summary] [Problem] To provide a drainage tank having a sufficient vibration and noise suppression function and hardly causing dew condensation on the outer peripheral surface of a think tank, and a high specific gravity used for such a drainage tank. Provided is a flexible resin sheet containing a component. SOLUTION: A metal receiving tank (1) having a drainage hole (6) has a high specific gravity component on its outer peripheral surface including a corner portion from the bottom to a corner portion, and preferably has a modulus of 10 MN at the time of 20% elongation deformation at room temperature. / M ² or less, flexible resin sheet (2)
Are laminated, and preferably, a synthetic resin foam sheet (3) (for example, having an expansion ratio of 25) is provided outside the flexible resin sheet (2).
A water tank for drainage (5) formed by laminating a polyolefin foam sheet of up to 50 times.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage tank such as a sink and a laminated sheet used for the drainage tank. More specifically, the present invention relates to a flexible resin sheet laminated on the outer peripheral surface of a metal water receiving tank. TECHNICAL FIELD The present invention relates to a water tank for drainage in which generation of noise due to the like is suppressed, and a flexible resin sheet used for the water tank for drainage.

[0002]

2. Description of the Related Art Conventionally, metal materials such as stainless steel have been widely used for a water receiving tank of a drainage tank such as a sink, and it has been desired to suppress noise caused by water and the like. For example, in addition to the impact noise generated when water falls from the callan into the sink of the sink, that is, the sink tank, there is also a case where tableware comes into contact with the inside of the sink tank to generate vibration. Stainless steel sink tanks in sinks are usually thin,
These impulsive sounds and vibrations may resonate and resonate greatly with the thin stainless steel plate, resulting in harsh noise.

[0003] In order to suppress the generation of this kind of noise, for example, Japanese Utility Model Publication No. 7-28215 discloses that a vibration-proof elastic sheet such as a vibration-proof rubber is adhered and laminated on the outer surface of a stainless steel sink tank of a sink. Is disclosed.

[0004] However, the technique disclosed in the above publication has a drawback that the vibration-proof elastic sheet is heavy and easily peels off from the outer surface of the sink tank. The anti-vibration elastic sheet is held by the close contact with the sink tank or the like of the dew condensation preventing cover.

Actually, as shown in FIG. 5, an anti-condensation cover made of a urethane foam resin or the like is provided on the entire periphery of a vibration damping elastic sheet 22 with an adhesive 25, as shown in FIG. A sink 24 is disclosed in which the dew condensation preventing cover 23 is in close contact with the center of the side wall via the corner r of the sink tank 21 while being covered by the sink 23.

[0006]

According to the study of the present inventors, since a commercially available elastic rubber sheet for vibration damping is heavy and strong in elasticity, when it is glued and laminated on a sink tank of a sink, the corner portion ( Even if it is attempted to adhere along the shape of a curved surface portion having a small radius of curvature), the elastic rubber sheet alone is easily peeled off due to the repulsive force based on its elasticity, and of course, prevents condensation formed of urethane foam resin or the like disclosed in the above-mentioned publication. Even when covered by the cover and brought into close contact with the center of the side wall of the sink tank, there is a strong possibility that the cover will be separated from the sink tank and detached.

Therefore, even if it is attempted to suppress noise caused by water or the like in a sink using the vibration-proof elastic rubber sheet disclosed in the above-mentioned publication, the vibration-proof elastic rubber sheet is substantially reduced to the bottom lower surface of the sink tank (that is, a flat surface). Can only be laminated on the outer periphery including the corners, and as a result, the lamination area is small. For example, when tableware comes into contact with the inside of the think tank, the impact noise that escapes to the side can be effectively reduced. In other words, it was necessary to further improve the noise suppression effect.

The present invention has been made in view of the above-described problems of the conventional technology of suppressing noise generation in a sink or the like, and has as its object to provide a drainage tank having a sufficient function of suppressing vibration and noise. It is another object of the present invention to provide a drainage tank in which dew condensation hardly occurs on the outer peripheral surface of the sink tank. It is a further object of the present invention to provide a flexible resin sheet containing a high specific gravity component, which is used for such a water tank for drainage.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, a high specific gravity component is contained on an outer peripheral surface including a corner portion from a bottom portion of a metal water receiving tank having a drain hole. Provided is a drainage tank body in which flexible resin sheets are laminated. According to a second aspect of the present invention, there is provided the drainage tank according to the first aspect, wherein a 20% modulus of the flexible resin sheet containing a high specific gravity component is 10 MN / m ² or less near normal temperature.

According to a third aspect of the present invention, there is provided the drainage tank according to the first or second aspect, wherein a synthetic resin foam sheet is laminated on the outside of a flexible resin sheet containing a high specific gravity component. The invention according to claim 4 is characterized in that the synthetic resin foam sheet is
The water tank for drainage according to claim 3, which is a polyolefin foam sheet having an expansion ratio of 30 to 50 times.

According to a fifth aspect of the present invention, a garbage disposal machine is attached to a drain hole of a metal water receiving tank.
4. A water tank for drainage according to any one of 4. Claim 6
The invention described above provides a flexible resin sheet containing a high specific gravity component used in the water tank for drainage according to any one of claims 1 to 5.

Hereinafter, the present invention will be described in more detail. The flexible resin sheet laminated on the outer peripheral surface of the metal water receiving tank of the drainage water tank body of the present invention contains a high specific gravity component and has flexibility. Express the action.

As the high specific gravity component, those having a specific gravity of 2.0 or more are usually used, for example, metal oxides such as iron oxide, titanium oxide and magnesium oxide; particulate metals;
In addition to mineral-based pulverized materials such as talc, mica, and quartz powder, glass fibers, glass powder, calcium carbonate, gypsum, and the like can be given. Among them, mica (specific gravity of about 2.85) and calcium carbonate (specific gravity of about 2.85) are particularly preferred in terms of vibration damping characteristics and cost.
7) is preferred.

Examples of the flexible resin sheet containing a high specific gravity component include a resin sheet composed of a resin composition in which an elastomer, a thermoplastic resin, and an inorganic powder as a high specific gravity component are blended, Further, a petroleum resin, and other materials, such as a resin sheet comprising a resin composition in which a heat stabilizer, a weather resistance improver, a lubricant, a processing aid, a pigment, a colorant, and the like are blended, if necessary. . A preferred elastomer is a styrene-isoprene block copolymer, and a preferred thermoplastic resin is ethylene-isoprene.
Vinyl acetate copolymers, and preferred petroleum resins include C9 petroleum resins. C9-based petroleum resin is preferable in that it improves the adhesiveness to a metal water receiving tank and improves the fluidity during molding.

Specific preferred resin sheets include, for example, styrene-isoprene block copolymer 100
Parts by weight, ethylene / vinyl acetate copolymer 20 to 1000
Parts by weight and a resin composition containing 200 to 1000 parts by weight of a high specific gravity inorganic powder, 100 parts by weight of a styrene / isoprene block copolymer, 10 to 500 parts by weight of an ethylene / vinyl acetate copolymer, 10 to 500 parts of a petroleum resin Parts by weight, and mica or calcium carbonate 250-100
And a resin sheet formed from a resin composition containing 0 parts by weight.

The molecular weight of the above block copolymer is 3
It is preferably from 000 to 300,000, more preferably from 80,000 to 250,000. Molecular weight 3
If it is less than 000, the mechanical properties such as strength at break and elongation at break of the block copolymer itself may decrease. On the other hand, if the molecular weight exceeds 300,000, it becomes difficult to mix with the inorganic powder.

The ethylene / vinyl acetate copolymer preferably has a vinyl acetate content of 2 to 50% by weight. If the vinyl acetate content is less than 2% by weight, the flexibility of the obtained sheet may be insufficient, and if it exceeds 50% by weight, the resin composition has tackiness. Release processing may be required.

The modulus of the flexible resin sheet containing a high specific gravity component at the time of 20% elongation deformation is preferably 10 MN / m ² or less at around normal temperature. If the modulus at the time of the 20% elongation deformation exceeds 10 MN / m ² , the rigidity of the sheet becomes too high. For example, when the sheet is laminated on the outer surface of a sink tank of a sink, the shape of the corner portion (curved surface portion having a small radius of curvature) is used. When the sheet is adhered along the corner, it may not be able to follow the shape of the corner portion, which may cause the sheet to peel off. The above 20% modulus is determined by JI
It is a value measured based on the low deformation tensile test in SK6254.

In consideration of such shape followability to the corner of the think tank, the thickness of the flexible resin sheet containing the high specific gravity component is preferably 6 mm or less, more preferably 3 mm or less. For laminating the flexible resin sheet and a metal water receiving tank made of stainless steel or the like, an adhesive or an adhesive is usually used. After applying the adhesive to the metal water receiving tank, the flexible resin sheet is pressure-bonded to the adhesive applied surface, dried and cured, whereby a laminate of the resin sheet and the metal water receiving tank can be obtained. As the adhesive used for this lamination, a rubber-based solvent-based adhesive, a two-pack type epoxy adhesive or a urethane-based adhesive can be used, and particularly, a chloroprene-based rubber solvent-based adhesive is preferable. .

The synthetic resin foam sheet laminated on the outside of the flexible resin sheet and used for preventing dew condensation is preferably a polyethylene foam having a foaming ratio of 25 to 50 times in view of excellent heat insulating properties. A 30 to 40 times polyethylene foam is more preferred. When the expansion ratio is small, sufficient heat insulating performance cannot be obtained, and when the expansion ratio is large, the mechanical strength decreases.

Next, for example, a flexible resin sheet and a synthetic resin foam sheet are bonded to each other with an adhesive in a heat laminating machine to form a laminate, and the flexible resin sheet side of the laminate is coated with a solvent system of chloroprene. By using an adhesive or an acrylic adhesive or the like, the desired drainage tank body is obtained by laminating and laminating the outer peripheral surface of almost the entire side surface including the corner portion from the bottom surface of the sink tank using an adhesive or an acrylic adhesive. In this case, if the flexible resin sheet is laminated on the outer peripheral surface including the corner portion, it is not always necessary to laminate the flexible resin sheet to the outer peripheral surface on almost the entire side surface as described later.

Further, as described above, the flexible resin sheet containing a high specific gravity component used in the water tank for drainage of the present invention may be, for example, 100 parts by weight of a styrene-isoprene block copolymer, an ethylene-vinyl acetate copolymer 20. ~ 1
000 parts by weight and a high specific gravity inorganic powder 200 to 1000 parts by weight, a styrene / isoprene block copolymer 100 parts by weight, an ethylene / vinyl acetate copolymer 10 to 500 parts by weight, a petroleum resin 10 to 10 parts by weight. 500
Parts by weight, and mica or calcium carbonate 250-1
A resin sheet formed from a resin composition containing 000 parts by weight is preferred.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an example of the present invention, and a stainless steel sink tank 1 as a metal water receiving tank.
Flexible resin sheet 2 containing a high specific gravity component on the outer peripheral surface of
And a drainage tank 4 in which a synthetic resin foam sheet 3 is further laminated on the outside thereof is shown, and 6 indicates a drain hole. FIG. 2 is an enlarged bottom view of FIG. 1 for clearly showing the state of lamination of the flexible resin sheet 2 on the sink tank 1.

The flexible resin sheet 2 is laminated via the adhesive 5 from the bottom of the outer peripheral surface of the think tank 1 to the center of the side wall 11 in the height direction, including the corner R. The foam sheet 3 is laminated on the entire periphery of the flexible resin sheet 2 via the adhesive 7, but is not directly adhered to the outer peripheral surface of the think tank 1. In terms of the method of manufacturing the water tank 4 for drainage, as described above, a laminate 9 of the flexible resin sheet 2 and the synthetic resin foam sheet 3 is obtained in advance, and then the stainless steel plate is pressed into a sink tank 1 obtained by pressing. A method of laminating a laminate is preferred. The synthetic resin foam sheet 3 is preferably laminated outside the flexible resin sheet 2 to prevent dew condensation. However, it is not always necessary to use the synthetic resin foam sheet 3 when there is no fear of dew condensation.

The flexible resin sheet 2 has, in particular, 20%
When the modulus is 10 MN / m ² or less around normal temperature,
For example, it is preferable because the shape following ability to the corner portion (curved portion having a small radius of curvature) of the sink tank of the sink is good.

In FIG. 1, the flexible resin sheet 2 is laminated only up to a substantially central portion in the height direction of the side wall 11, but in order to completely prevent noise, the top plate 1 of the sink tank is required.
It is permissible to stack up to just before 2. However, usually, about 40% to 60% of the outer peripheral surface of the think tank excluding the top plate 12
By laminating the flexible resin sheet 2 on the other side, a substantially satisfactory degree of vibration damping action, that is, noise prevention action is exhibited, and when the flexible resin sheet 2 is further laminated, the noise prevention action increases, but the rate of increase slightly decreases. However, as described later, in the case of a drainage tank body in which a garbage disposal machine is attached to the drain hole, in order to prevent the vibration caused by the garbage disposal machine or the like from being transmitted to the top plate 12 of the sink tank, Rather, it is preferable to laminate the flexible resin sheet 2 immediately before the top plate 12.

FIG. 3 shows an example of a drainage tank 4 to which a garbage disposer is further attached in FIG. The same reference numerals are used for the flexible resin sheet 2, the synthetic resin foam sheet 3 and the adhesive 5 as in FIG. 1, but the adhesive 7 in FIG. The state of being stacked up to immediately before (immediately below) 12 is also not shown.

In the garbage disposer 15, the rotating blades connected to the rotating shaft of the motor 13 rotate in the garbage crushing chamber 14 to crush the garbage introduced from the drain hole 6 together with tap water.
A mechanism for discharging the crushed material to the outside via a drain pipe 20 is provided, and is attached to a drain hole 19 of a sink tank via a mounting spring 16 and mounting flanges 17 and 18.

When using the garbage disposer 15 constructed as described above, the vibration caused by the rotation of the motor 13 and the crushing of the garbage are caused by the garbage crushing chamber 14, the mounting tanks 17 and 18, and the sink tank. Although transmitted to the whole, the flexible resin sheet 2 is laminated on the outer peripheral surface including the corner portion R from the bottom of the think tank 1, so that this vibration is greatly reduced and almost no sound is generated. ing.

The garbage disposal machine does not necessarily need to be provided with a mechanism for crushing garbage with a rotary blade. For example, a disk-shaped turntable connected to the rotating shaft of the motor 13 is provided with a polishing chamber. The garbage may be rotated inside the crusher 14 and crushed by a crushing hammer (not shown) attached to the turntable.

Example 1 A water tank 4 for drainage shown in FIG. 1 was prepared, and the occurrence of noise and the like was confirmed. [Production of flexible resin sheet] Styrene-isoprene block copolymer ("HIBLER" manufactured by Kuraray Co., Ltd., molecular weight of about 1)
40,000) 100 parts by weight, ethylene-vinyl acetate copolymer (vinyl acetate content 30% by weight) 100 parts by weight, and calcium carbonate (average particle size 2 μm) as an inorganic powder.
m, specific gravity 2.7) 200 parts by weight and mica (100 mesh pass, specific gravity 2.85) 150 parts by weight were supplied to an extruder and heated and kneaded to obtain a resin composition having a specific gravity of 1.
8, a flexible resin sheet 2 having a thickness of 1 mm and a width of 100 mm and containing a high specific gravity component was extruded.

The above flexible resin sheet is made according to JIS K
A low deformation tensile test was performed in accordance with 6254 (established in 1993), and the modulus at the time of 20% elongation deformation was 2.3 MN / m ² .

[Production of Laminated Sheet] Next, a 4 mm thick, 50 mm wide coated with the solvent-type chloroprene rubber-based adhesive 7 was applied.
The flexible resin sheet 2 having a width of 100 mm was laminated on a 0 mm polyethylene resin foam sheet (“Taika Softlon” manufactured by Sekisui Chemical Co., Ltd., expansion ratio 30 times) 3 and wound into a roll (as a roll). . Specifically, using an infrared lamp (or a burner), the laminating surface temperature of the flexible resin sheet 2 is set to 100 to 140 ° C., and the surface of the polyethylene resin foam sheet as the synthetic resin foam sheet 3 (adhesive coated surface) After heating so that the temperature would be 80 to 120 ° C., they were brought into contact with each other, laminated and laminated to obtain a laminated sheet 9.

[Preparation and Evaluation of Drainage Water Tank Body] The above-mentioned laminated sheet 9 was applied to a sink tank 1 obtained by pressing a stainless steel plate using a solvent-type chloroprene rubber-based adhesive 5.
As shown in FIG. 1, the drainage tank 4 was obtained by laminating and laminating so that the flexible resin sheet 2 reached a substantially central portion in the height direction of the side wall 11.

The modulus at the time of 20% deformation is 2.3 MN /
laminated sheet 9 formed by laminating m ² flexible resin sheets
Did well follow the corner R of the think tank 1 and did not peel off or cause unnatural deformation.
The obtained water tank for drainage was used for one week, but the impact sound when water fell from the curan into the sink tank and the sound of the dishes coming into contact with the inside of the sink tank, especially the sink tank made of stainless steel resonated greatly. No sound was generated and the generated sound was greatly reduced.

(Example 2) Laminated sheet 9 obtained in Example 1
The garbage disposer 15 shown in FIG. 4 is attached to the sink tank in which the flexible resin sheet 2 reaches immediately before (directly below) the top plate 12, as shown in FIG.
A water tank for drainage was produced in the same manner as in Example 1 except that the water tank was attached, and its vibration and noise generation conditions were checked. Perhaps because the laminated sheet is laminated so that the flexible resin sheet reaches immediately before (directly below) the top plate, or when the motor 13 is rotated, the vibration caused by the rotation of the motor and the vibration caused by crushing of dust are transmitted to the sink tank. In addition, the vibration of the top tank and other parts of the sink tank is suppressed, and the noise associated with the rotation of the motor, the impact noise when water falls, and the noise of the dishes contacting inside the sink tank are also significantly reduced. In comparison with Example 1, there was almost no difference in vibration and noise generation.

[0037]

According to the present invention, the water tank for drainage is provided on the outer peripheral surface including the corner from the bottom of the metal water receiving tank having the drainage hole.
Since a flexible resin sheet containing a high specific gravity component is laminated, it exhibits excellent vibration and noise suppression functions. 20% of flexible resin sheet containing high specific gravity component
When the modulus is less than or equal to 10 MN / m ² at around normal temperature, a flexible resin sheet is surely laminated on the outer peripheral surface including the corner portion from the bottom of the metal water receiving tank to ensure the above-mentioned effect.

When a synthetic resin foam sheet is laminated on the outside of a flexible resin sheet containing a high specific gravity component, dew condensation hardly occurs in the metal water receiving tank due to the heat insulating property of the synthetic resin foam sheet. When the synthetic resin foam sheet is a polyolefin foam sheet having an expansion ratio of 25 to 50, it has particularly excellent heat insulation properties and exhibits a higher dew condensation preventing function. When a garbage disposal machine is attached to the drain hole of the metal water receiving tank, the garbage can be conveniently processed and, of course, the vibration and noise accompanying the garbage disposal can be sufficiently suppressed. .

The flexible resin sheet used for the drainage water tank of the present invention contains a high specific gravity component and has flexibility, so that the outer peripheral surface including the corner of the metal water receiving tank is provided. Since the layers are laminated according to the shape, they exhibit excellent vibration and noise suppression functions.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a sectional view showing another example of the present invention.

FIG. 4 is a perspective view showing an example of a garbage processing machine used in the present invention.

FIG. 5 is a cross-sectional view illustrating an example of a conventional water tank for drainage.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Metal water receiving tank (sink tank) 2 ... Flexible resin sheet containing a high specific gravity component 3 ... Synthetic resin foam sheet 4 ... Drainage tank 5 ... Adhesive (adhesive) 6 ... drain hole 7 ... adhesive (adhesive) 9 ... laminated body 11 ... side wall of sink tank 12 ... top plate of sink tank 15 ... garbage processing machine

Claims (6)

[Claims] 1. A drainage tank body comprising a metal water-receiving tank having a drainage hole and a flexible resin sheet containing a high specific gravity component laminated on an outer peripheral surface including a bottom part and a corner part. 2. The drainage tank according to claim 1, wherein the flexible resin sheet containing the high specific gravity component has a 20% modulus of 10 MN / m ² or less near normal temperature. 3. The drainage tank according to claim 1, wherein a synthetic resin foam sheet is laminated outside a flexible resin sheet containing a high specific gravity component. 4. A foamed synthetic resin sheet having an expansion ratio of 25 to 25.
The drainage tank according to claim 3, which is a 50-fold polyolefin foam sheet. 5. The drainage tank according to claim 1, wherein a garbage disposer is attached to a drain hole of the metal water receiving tank. 6. A flexible resin sheet containing a high specific gravity component, which is used for the water tank for drainage according to any one of claims 1 to 5.