KR101381310B1 - Three rayer water and sewage pipe - Google Patents

Abstract

Provided is a triple sewage pipe having three layer structure, capable of maintaining mechanical strengths such as impact strength and tensile strength, reducing noise, refining water, keeping warm, and securing insulation. The triple sewage pipe includes a polyvinyl chloride (PVC) inner wall layer formed of PVC containing an impact reinforcing agent; an intermediate noise preventive layer formed on an outer surface of the PVC inner wall layer and including a noise preventive material; and a PVC outer wall layer formed on an outer surface of the intermediate noise preventive layer and including an impact reinforcing agent. The PVC inner wall includes 100 parts by weight of PVC resin, 1-5 parts by weight of yellow soil, 1-5 parts by weight of elvan, 1-5 parts by weight of charcoal, 0.01-1 parts by weight of solution including water based silver, 2-3 parts by weight of a lead-based compound stabilizer, 0.5-1 parts by weight of a calcium-based stabilizer, 1-4 parts by weight of a process acid, and 2-5 parts by weight of an impact reinforcing agent, thereby preventing noise resulting from the flow of a fluid, keeping warm and securing insulation.

Description

Three-layer triple water and sewage pipes {Three rayer water and sewage pipes}

The present invention relates to a triple water and sewage pipe having a three-layer structure, and in particular, to block noise while maintaining mechanical strength such as impact strength and tensile strength, and triple water and sewage pipe having a three-layer structure with water purification, thermal insulation, and insulation effect. It is about.

Generally, a water pipe for supplying drinking water uses a metal pipe such as a cast iron pipe or an oil pipe. Such a metal pipe is used for a long period of time, and the inner wall is corroded due to the rust generated in the inner wall of the pipe. And the metal pipe is poor in workability due to heavy weight during installation and transportation.

The above problems can be solved by using water pipes made of olefinic high density polyethylene (HDPE) and polyvinyl chloride (PVC) resin which improves the impact resistance of the synthetic resin pipe which is weaker in strength than the metal pipe, If the water pipe made of synthetic resin also flows at low speed or stay for a long time, it may cause malodor due to the reproduction of harmful microorganisms such as Escherichia coli, which may cause discomfort or severe cases of diarrhea, enteritis and food poisoning. Techniques for imparting antibacterial properties have been developed.

In addition, a pipe for transferring a constant or sewage, and a pipe for connecting the pipes to each other are formed of hard PVC.

Conventional pipes and pipe diaphragms are known to have various shapes such as a pipe having a cylindrical section, an elbow joint, a Y-joint, a 45-degree elbow joint and an LT or YT joint.

When the fluid (water or sewage) is discharged from the pipes and pipes, the fluid impinges on the wall surface to generate noise, and the noise causes the resonance phenomenon to occur in the pipe, Larger noise is transmitted to the outside.

If noise is continuously generated from the pipes and pipe fittings that transport fluid, it causes harm such as listening disturbance, sleep disturbance, discomfort and stress, and increases blood pressure, digestive dysfunction, and leukocytes. It is known to adversely affect the human body and daily life.

In recent years, due to the desire to pursue a more comfortable life, interest in noise has increased, and the seriousness and concern about noise reduction has also been amplified.

In order to solve the problems of the conventional pipe and pipe joint pipe formed in a single layer as described above, the pipe and pipe joint pipe is formed in multiple layers (multi-layer).

The triple pipe is widely used in various technical fields because of its superior physical properties such as strength and durability compared to a single pipe or a double pipe.

Examples of such techniques are described in documents 1 and 2 below.

For example, the following Patent Document 1 reduces the noise of water flowing in high-rise and apartment buildings to create a comfortable living space, can be easily installed by using a conventional joint pipe, and environmentally friendly pollution that is a disadvantage of commonly used PVC pipes A sound-proof three-layer PP pipe that can completely solve the problem, can reduce the cost by using CaCO₃, can be used semi-permanently, and can improve the noise pollution of water in high-rise and general buildings. have.

1, the outer layer 1 and the inner layer 3 are made of 100 parts by weight of PVC, 2 to 6 parts by weight of a composite heat stabilizer, 3 to 8 parts by weight of MBS impact modifiers, 1 to 3 parts by weight of zeolite, 1 to 8 parts by weight of vermiculite, 0.1 to 2 parts by weight of a phosphate compound, 0.2 to 3 parts by weight of a lubricant and 0.5 to 2 parts by weight of TiO ₂ , Is composed of 100 parts by weight of PVC, 2 to 6 parts by weight of a composite heat stabilizer, 0 to 2 parts by weight of an MBS impact modifier, 0.1 to 5 parts by weight of CaCO ₃ , 0.2 to 3 parts by weight of a lubricant and 0.5 to 2 parts by weight of TiO ₂ An antibacterial PVC water pipe is disclosed.

Republic of Korea Patent Publication No. 2003-0071436 (2003.09.03 published) Korean Registered Patent No. 10-0969655 (Registered on July 5, 2010)

However, in the conventional art as described above, the composition used for the intermediate layer is merely described as using stone powder or recycled synthetic resin without specific composition, and there is doubt about actual implementation possibility and effect.

In addition, although the inner layer and the outer layer are made of polyethylene and the middle layer is a triple tube formed of a recycled resin made of waste vinyl, etc., it has been proposed that the inner layer and the outer layer are formed by the external environment due to the triple structure of different materials. Easily separated phenomenon occurs, as well as easily damaged by external shock or internal pressure, etc., due to the structural and material properties are limited in functionality and durability, and the noise blocking effect is almost impossible to expect.

An object of the present invention is to solve the problems as described above, to provide a triple water and sewage pipe with a three-layer structure that not only blocks the noise pollution caused by the flow of water in high-rise and general buildings, but also has water purification and antibacterial performance. will be.

Another object of the present invention is to provide a triple water and sewage pipe having a three-layer structure with enhanced impact strength and thermal insulation and insulation effect.

Still another object of the present invention is to provide a triple water and sewage pipe having a three-layer structure that can be used for various purposes by applying a variety of colors such as ivory color to the PVC outer wall layer.

Triple water and sewage pipe according to the present invention to achieve the above object is a triple water and sewage pipe having a three-layer structure, PVC inner wall layer formed of PVC (Polyvinyl chloride) containing an impact modifier, and formed on the outer surface of the PVC inner wall layer An intermediate sound insulation layer containing a noise barrier member and a PVC outer wall layer formed on the outer surface of the intermediate sound insulation layer and formed of a PVC containing an impact modifier, the inner wall PVC layer is 100 parts by weight of polyvinyl chloride resin, loess 1 ~ 5 parts by weight, elvan 1 to 5 parts by weight, charcoal 1 to 5 parts by weight, aqueous silver-containing solution 0.01 to 1 parts by weight, 2-3 parts by weight of lead compound stabilizer, 0.5 to 1 parts by weight of calcium-based single stabilizer, processing aid It is characterized by including 1 to 4 parts by weight, 2 to 5 parts by weight of the impact modifier.

In the triple water and sewage pipe according to the invention, the impact modifier is characterized in that the impact modifier of ABS (Acrylonitrile Butadiene Styrene terpolymer) or MBS (Methacrtlate Butadiene Styrene) series.

In the triple water and sewage pipe according to the present invention, the noise blocking member is characterized in that any one of mica (mica) or mica mixed with PVC (Polyvinyl chloride).

In the triple water and sewage pipe according to the present invention, the water and sewage pipe of the three-layer structure is any one of a cylindrical pipe, an elliptical pipe, an oval pipe, a joint pipe, the joint pipe is an elbow joint pipe, a Y-shaped joint pipe. A 45-degree elbow joint pipe, and an LT or YT joint pipe.

In the triple water and sewage pipe according to the present invention, the intermediate sound insulation layer is provided with a pleat formed with a plurality of pleats, the pleat is characterized in that formed in the longitudinal direction of the intermediate sound insulation layer or the circumferential direction of the intermediate sound insulation layer .

As described above, according to the triple water and sewage pipe having a three-layer structure according to the present invention, by providing a PVC inner wall layer and a PVC outer wall layer containing an impact reinforcing agent, the impact strength can be strengthened, mica having a plate-like structure By providing an intermediate sound insulating layer formed to block the noise caused by the movement of the fluid, the insulation and heat insulation effect is obtained.

In addition, according to the triple water and sewage pipe of the three-layer structure according to the present invention, since the ocher, elvan, charcoal, water-based silver is provided in the PVC inner wall layer, when the pipe is used as a water pipe, water and antibacterial performance can be achieved. The effect can be obtained.

In addition, according to the triple water and sewage pipe of the three-layer structure according to the present invention, a plurality of wrinkles are provided in the intermediate sound insulation layer, the diffuse reflection is made in the corrugated portion is also obtained the effect that can block the noise transmission to the PVC outer wall layer.

1 is a view showing an example of a conventional three-layer pipe,
Figure 2 is a cutaway perspective view for explaining a triple water and sewage pipe having a three-layer structure according to an embodiment of the present invention,
3 is a cross-sectional view of a triple water and sewage pipe having a three-layer structure according to another embodiment of the present invention,
Figure 4 is a schematic diagram of a manufacturing apparatus of a triple water and sewage pipe having a three-layer structure according to the present invention.

These and other objects and novel features of the present invention will become more apparent from the description of the present specification and the accompanying drawings.

Hereinafter, the configuration of the present invention will be described with reference to the drawings.

FIG. 2 is a cutaway perspective view illustrating a triple water and sewage pipe having a three-layer structure according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of a triple water and sewage pipe having a three-layer structure according to another embodiment of the present invention.

As shown in FIG. 2, the triple water and sewage pipe 100 according to the present invention is a triple water and sewage pipe having a three-layer structure, and includes a PVC inner wall layer 10 formed of polyvinyl chloride (PVC) containing an impact modifier. An intermediate sound insulation layer 20 formed on the outer surface of the PVC inner wall layer 10 and containing the noise blocking member and a PVC outer wall layer 30 formed on the outer surface of the intermediate sound insulation layer and formed of PVC containing an impact modifier. do.

Such triple water and sewage pipe 100 may include a conventional cylindrical pipe or elliptical pipe and oval pipe, and when used as a joint pipe, elbow joint pipe, Y joint pipe, 45 degree elbow pipe, LT or Applicable to YT type pipes.

When the PVC inner wall layer 10 is used as a water pipe, for example, to achieve water purification and antibacterial performance, 100 parts by weight of polyvinyl chloride resin, 1 to 5 parts by weight of ocher, 1 to 5 parts by weight of ganban stone, charcoal 1 ˜5 parts by weight, and 0.01-1 part by weight of aqueous silver-containing solution.

In addition, the PVC inner wall layer 10 of the triple water and sewage pipe 100 is 2 to 3 parts by weight of the lead-based composite stabilizer, 0.5 to 1 parts by weight of calcium-based single stabilizer, processing to block the noise caused by the movement of the fluid and maintain the strength 1-4 weight part of preparations, and 2-5 weight part of impact modifiers are included.

Polyvinyl Chloride is a homopolymer of vinyl chloride and a copolymer containing 50% or more of vinyl chloride. It has a low crystallinity and is difficult to be bonded at the time of processing. As a soft product, · It is used in sheets and films for agriculture, etc., and in hard products, it is used in the production of water pipes by extrusion molding.

In addition, in the present invention, the PVC inner wall layer 10 is formed by adding ocher, charcoal, elvan or silver nanoparticles so as to have antibacterial performance and water purification function for use as a water pipe.

That is, in the present invention, 1-5 parts by weight of loess is contained based on 100 parts by weight of the polyvinyl chloride resin so as to have antibacterial performance and water purification function.

The loess is a honeycomb structure with a large surface area, and many spaces have a multi-layer structure. In this sponge-like hole, the far-infrared ray is absorbed and stored in large quantities. When heat is received, it radiates and stimulates the molecular activity of other objects.

There are 200 million microorganisms in a spoonful of loess, and it is filled with an active enzyme called carita, which is a physiologically active substance which is useful for human body to reduce and decompose active oxygen peroxide lipid which is the cause of aging.

In addition, the polyvinyl chloride resin according to the present invention is based on 100 parts by weight of the polyvinyl chloride resin, and further comprises 1-5 parts by weight of charcoal.

Charcoal is a high-hardness activated carbon carbonized at a high temperature of 1000 ° C or higher. Though there is a slight difference depending on the material of the wood used, there are numerous fine pores of about 1/1000 mm in diameter. Generally, the total area per 1 g of activated carbon is 250-300 m ² wide cube. These micropores have already been identified for their ability to adsorb and remove harmful and odorous components present in the water and are used for purification of water, filtration of food, refining of alcohol, deodorization / dehumidification and electromagnetic wave shielding.

Especially, 1 g of bamboo activated carbon has about 2 to 3 times of micropores as compared with currently used palm, oak and pine activated carbon, and also contains activated silicate. do.

Various examples of water purification using the excellent water purification, deodorization and deodorizing effects of activated carbon have been carried out both domestically and internationally. In Korea, according to Article 18 of the Eating Water Management Act and Article 9 of the Enforcement Regulations of the same Act, 'water treatment manufacturing industry (activated carbon)', which can be used for water quality improvement and purification,

In addition, the polyvinyl chloride resin according to the present invention is based on 100 parts by weight of the polyvinyl chloride resin, it is configured to further comprise 1-5 parts by weight of ganban stone.

Elvanite is a semi-sedimentary rock belonging to quartz rock and feldspar rock, and its constituents vary depending on the region, and are mainly composed of alkaline feldspar and quartz, and are very similar to mineral granite in terms of composition and appearance. These elvan features are porous and have been found to be composed of various materials as a result of component analysis by powder X-ray diffraction method.

In addition, the elvan stone easily adsorbs metals such as heavy metals [Pb, Cd, As, Cr (Ⅵ)] in water due to adsorption and filtration action of components harmful to the human body due to porosity and ion exchange ability of alkali metal, It has been known that it has the ability to dissolve ions, emit far-infrared rays, deodorization ability, and maintain the freshness of fruits and vegetables. Currently, it is known that water purifier, beauty agent, food preservative, bath room sauna material, And so on.

The components of the elvan stone vary depending on the area. In the present invention, the components of elvan stone using the racemic acid are shown in Table 1 below.

<Table 1>

By adding elvan stone to the polyvinyl chloride resin according to the present invention, it is possible to have the water purification function in the water supply pipe.

In addition, the present invention includes a silver-based aqueous silver-containing solution containing the nano-sized silver and is included in the silver nano-containing polyvinyl chloride resin to have an antibacterial and antifouling performance to impart excellent antimicrobial, corrosion resistance and adhesion to the inside of the steel pipe.

Nano silver is an antimicrobic sterilizing action of silver metal ion (Ag +) which has antimicrobial action, and silver metal ion (Ag +) directly binds to -SH group, -COOH group and -OH group of bacteria directly to destroy bacterial cell membrane The oxygen is converted into active oxygen which is sterilized by the catalytic action by the silver, and the antimicrobial function is exhibited by the sterilization action mechanism by the active oxygen.

On the other hand, as a method of refining silver into nano-size, an adsorption method of refining silver by using an adsorbing surfactant from silver salt, and a composite method of producing a polymer-silver nanocomposite by using silver salts and other polymers are generally used.

That is, in the adsorption method, when silver ions are reduced to silver particles in the silver salt, the size and distribution of the metal particles are controlled by the surfactant. In the silver particles using the silver salt, a surfactant aqueous solution is added, and due to the inherent properties of the adsorbed surfactant, the silver particles adsorbed on the surface of the silver particle nucleus forming the surfactant in the solution in which the metal particles are formed, Is prevented. Therefore, it is delayed or blocked that the reduced metal particles are bonded to the surface of the other metal particles, so that fine metal particles having uniform size distribution are produced. In this adsorption method, AgNO ₃ And a metal ion reducing agent such as hydrazine, lithium aluminum borohydride, sodium borohydride, and ethylene oxide, and the like are also added. A method for producing fine silver particles by such an adsorption method is described in detail in Korean Patent Registration No. 10-375525.

In the silver-containing solution of the present invention, silver (Ag) having a particle diameter of 1.0-20 nm is contained at a concentration of 200-100,000 ppm, preferably 1,000-100,000 ppm. When the diameter of the silver in the silver-containing solution is less than 1.0 nm, it is not preferable due to an increase in cost due to the production of nano silver. When it exceeds 20 nm, nano silver is not uniformly dispersed when added to the resin, It shows poor adherence and corrosion resistance due to poor mixing property, which causes an increase in cost.

Also, if the concentration of silver in the silver-containing solution is less than 200 ppm, a large amount of silver-containing solution should be used in order to maintain the silver concentration in the resin composition in the production of the resin composition, thereby degrading the resin properties and reducing the corrosion resistance and conductivity. If the concentration exceeds 100,000 ppm, a large amount of stabilizer is required to stabilize the nanosized silver without reaction or aggregation, which is undesirable because the corrosion resistance of the inside of the steel pipe is reduced.

In addition, the addition of the ocher, charcoal or ganguerite is easily achieved by mixing and stirring the usual ocher, charcoal or pulverized powder to the polyvinyl chloride resin, and a description thereof will be omitted.

It is needless to say that the water purification effect of the water supply can be achieved by using the polyvinyl chloride resin in such a manner that the mixed material of the elvan, charcoal,

As described above, the reason for adding 1-5 parts by weight of elvan, loess or charcoal is as follows.

When the amount of elvan stone, loess or charcoal is less than 1 part by weight, the intended water purification effect of the present invention is not exhibited more than expected, and when the amount of elvan stone, loess or charcoal is more than 5 parts by weight, This is because the effect of the corrosion resistance by the polyvinyl chloride resin is lowered.

It is sufficient to use the method used for a device having a general purification function as a particle size or a processing method according to the processing of the elvan stone, the yellow loess or the charcoal, so a detailed description thereof will be omitted.

In addition, as described above, the polyvinyl chloride resin according to the present invention is achieved by a known effect on the water purification effect by ganban rock, charcoal or loess, and can be added or subtracted as necessary for the content of the composition as described above. Of course.

On the other hand, when the fluid is transferred into the PVC inner wall layer 10 of the triple water and sewage pipe 100 having a three-layer structure according to the present invention, the noise is generated when it collides with the inner surface of the PVC inner wall layer (10).

The noise generated by the flow of the fluid is absorbed while passing through the PVC inner wall layer 10 containing the impact modifier and formed of PVC, and a part of the first disappears.

The PVC inner wall layer 10 and the PVC outer wall layer 30, which are formed of the PVC containing the impact modifier, are made of ABS, which is one of thermoplastic plastics (Polyvinyl chloride: 'polyvinyl chloride', 'vinyl chloride resin'). (Acrylonitrile Butadiene Styrene terpolymer) or MBS (Methacrylate Butadiene Styrene) can be formed by adding an impact modifier. Or a method of producing a polyvinyl chloride resin composition and a polyvinyl chloride resin composition described in Patent Registration No. 10-0521005.

In Patent Publication No. 10-0521005, 100 parts by weight of a polyvinyl chloride resin, 2 to 3 parts by weight of a lead based complex stabilizer, 0.5 to 1 part by weight of a calcium based single component stabilizer, 1 to 4 parts by weight of a processing aid, To 5 parts by weight of polypropylene, 3 to 5 parts by weight of general scintillation (1 micron coating), and 2 to 5 parts by weight of impact modifier are added at a certain ratio of nano-sized scars having significantly increased impact resistance and tensile strength . Accordingly, it has excellent physical properties and processability with high tensile strength and impact resistance, and can contain physical properties such as high tensile strength and impact resistance by containing a small amount of nano-sized wobble.

In addition, the residual noise passing through the PVC inner wall layer 10 passes through the middle sound insulation layer 20 of a tabular structure, and the plate sound insulation layer 20 is a mica repeatedly. Since they overlap, the residual noise is blocked (dissipated) by the overlapping mica when passing through the plate-shaped intermediate sound insulation layer 20, so that the noise passing through the plate-shaped intermediate sound insulation layer 20 is significantly reduced. (Secondary extinction).

The plate-like structure is a structure having an inverted structure in which the size in the horizontal direction is larger than the size in the vertical direction, and is a structure in which the stacked layers are stacked.

The mica is also referred to as a stone scale, and usually has a hexagonal plate-like crystal form. The mica is in the form of impression, fibrous, and columnar phases. The mica has a complete cleavage on any form or underside and is very thinly peeled. Split pieces are known to have a strong resilience.

The chemical composition of the mica is very complex and is a layered silicate mineral with the chemical formula of X2Y4 ~ 6Z802 (OH, F) 4, where X = K, Na, Ca, 12, Y = Fe, Mg, Al, 6 coordination, Z = Si, Al, 4 coordination, hardness of 2.5-4, specific gravity of 2.75-3.2. The cleavage is perfect in one direction. Yellow, brown, green, etc., with black luster. Depending on the composition and other properties, muscovite, soda mica, biotite, gold mica, Honguunmo, and Jindalite are categorized.

Because these mica have different uses, muscovite is strong in fire resistance and is an insulator of electricity, so it is used for electric insulation, refractory material, especially window of hearth, and the powder is silver white, so gold is used for silver. Good quality gold mica is also used like muscovite.

The noise which is remarkably extinguished through the plate-shaped intermediate sound insulation layer 20 as described above is dissipated tertiarily while passing through the PVC outer wall layer 30 formed of the PVC containing the impact modifier.

As described above, the noise emitted to the outside when the fluid is transferred by the triple water and sewage pipe 100 having the three-layer structure according to the present invention is confirmed to be less than 45 decibels (dB). Could.

Meanwhile, as illustrated in FIGS. 2 and 3, the middle sound insulation layer 20 of the triple water and sewage pipe 100 having a three-layer structure according to the present invention is provided with a wrinkle portion 21 having a plurality of wrinkles formed therein.

The pleats provided in the pleats 21 are spirally formed in the circumferential direction of the intermediate sound insulation layer 20, as shown in FIG. The noise passing through the PVC inner wall layer 10 to provide such wrinkles may cause diffuse reflection in the wrinkles to return to the PVC inner wall layer 10 or collide with each other to further reduce noise.

In addition, the wrinkles 21, as shown in Figure 3, even if provided in the longitudinal direction of the intermediate sound insulation layer 20 can be obtained as described above.

Fabrication of the triple water and sewage pipe 100 as described above can be easily realized by, for example, a triple water and sewage pipe forming apparatus as shown in FIG.

4 is a schematic diagram of a manufacturing apparatus of a triple water and sewage pipe according to the present invention.

As shown in FIG. 4, the first to third extruders are mounted in one extrusion mold, and each extruder includes a PVC inner wall layer 10, an intermediate sound insulation layer 20, and a PVC outer wall layer 30. In order to do this, each raw material is added. The extrudate extruded through the first extruder forms a PVC inner wall layer 10, the extrudate extruded through the second extruder forms an intermediate sound insulation layer 20, and the extrudate extruded through the third extruder PVC outer wall layer 30 is formed. As described above, the triple water and sewage pipe 100 as shown in FIG. 2 may be formed by sequentially extruding sequentially through the first to third extruders.

Also, the protrusion 21 shown in FIG. 2 may form a spiral pleat by providing the protrusion in the second extruder and rotating the protrusion, and the formation of the pleat 21 shown in FIG. The wrinkles can be formed by providing a plurality of protrusions on the outlet side.

In addition, in the present invention, by adding a dye in the raw material input step for forming the PVC outer wall layer 30, for example, by applying a variety of colors, such as ivory color to the color of the PVC outer wall layer 30, It is also possible to prepare a triple pipe for multi-use.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

By using the triple water and sewage pipe of the three-layer structure according to the present invention, the noise caused by the movement of the fluid is blocked, and the heat insulation and heat insulation effect is obtained.

10: PVC inner wall layer
20: middle sound insulation layer
21: wrinkles
30: PVC outer wall layer

Claims (5)

As a triple water and sewage pipe of three-layer structure,
PVC inner wall layer formed of polyvinyl chloride (PVC) containing an impact modifier,
An intermediate sound insulation layer formed on an outer surface of the PVC inner wall layer and containing a noise blocking member;
A PVC outer wall layer formed on the outer surface of the intermediate sound insulation layer and formed of PVC containing an impact modifier,
The PVC inner wall layer is 100 parts by weight of polyvinyl chloride resin, 1 to 5 parts by weight of ocher, 1 to 5 parts by weight of ganban stone, 1 to 5 parts by weight of charcoal, 0.01 to 1 parts by weight of aqueous silver-containing solution, and lead-based composite stabilizer 2 to 3 A triple water and sewage pipe, comprising a weight part, 0.5-1 part by weight of a calcium-based single stabilizer, 1-4 parts by weight of a processing aid, and 2-5 parts by weight of an impact modifier. The method of claim 1,
The impact reinforcing agent is ABS (Acrylonitrile Butadiene Styrene terpolymer) or MBS (Methacrtlate Butadiene Styrene) impact reinforcing triple triple sewage pipe, characterized in that. The method of claim 1,
The noise blocking member is a triple water and sewage pipe, characterized in that any one of mica (mica) or mica (mica) mixed with PVC (Polyvinyl chloride). The method of claim 1,
The three-layer water and sewage pipe is any one of the cylindrical pipe, elliptical pipe, oval pipe, joint pipe,
The joint pipe is an elbow type joint pipe, and a Y type joint pipe. Triple water and sewage pipe, characterized in that any one of the 45 degree elbow joint, LT or YT joint. The method of claim 1,
The intermediate sound insulation layer is provided with a pleat formed with a plurality of pleats, wherein the pleats are formed in the longitudinal direction of the middle sound insulation layer or the circumferential direction of the middle sound insulation layer, characterized in that the triple water and sewage pipe.

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