KR102518038B1 - Synthetic resin pipe with reinforced outer skin layer with improved connectivity and durability - Google Patents

Abstract

The present invention provides a synthetic resin pipe with a reinforced outer skin layer with improved connectivity and durability, which comprises: a synthetic resin pipe including a main layer forming a main body, an inner skin layer formed as a thin film on the inner peripheral surface of the main layer, and an outer skin layer formed as a thin film on the outer peripheral surface of the main layer; a connection sheet which is seated on a peeled portion exposed to the outside after a portion of the surface of the outer skin layer is peeled off, surrounds a joint between two successively arranged synthetic resin pipes, and is tightened by a screw to connect the two successively arranged synthetic resin pipes; and a watertight layer provided between the peeling portion and the connection sheet to make the joint watertight as the connection sheet is pressed by the screw. A guide groove is formed on the surface of the outer skin layer to reduce the thickness to facilitate peeling. At the peeling portion, a protrusion line is formed to protrude along the circumference of the synthetic resin pipe to guide and fix the position of the connection sheet. A pair of recessed lines are formed on the upper surface of the connection sheet into which the protruding lines of each of the two synthetic resin pipes arranged in succession are inserted.

Description

Synthetic resin pipe with reinforced outer skin layer with improved connectivity and durability}

The present invention relates to a synthetic resin pipe reinforced with an outer skin layer having improved connectivity and durability.

In general, existing cast iron pipes, copper pipes, concrete pipes, etc., have low workability due to their heavy weight and are expensive, making it difficult to construct economically. Since it has defects such as contamination, it is cheaper than concrete or metal pipes, is resistant to corrosion and does not rust, and is rapidly being replaced by synthetic resin pipes that are lightweight and have excellent workability.

However, although the synthetic resin pipe has high work efficiency due to corrosion resistance and light weight, as its use is prolonged, a thin layer of viscous precipitate is formed on the inner wall of the pipe, and this precipitate can breed microorganisms or bacteria harmful to the human body. It will provide an environment in which The precipitate is formed when foreign substances such as salts contained in the constant water that are not completely purified are deposited on the pipe wall due to the electrostatic attraction caused by friction between the pipe and running water.

As a result, the water supply supplied through the synthetic resin pipe has solved the defects of cast iron pipe, copper pipe, etc. In spite of this, the use of drinking water and other living water can be recognized as unsuitable, and especially today, which requires stricter standards for drinking water hygiene, this problem is approaching as a more serious problem for users, and simple water supply such as village water supply facilities Water that is not completely purified due to the facility itself contains bacteria and heavy metals that are harmful to the human body, and drinking it for a long time causes serious side effects. .

Accordingly, there is a need to further increase the usability of the existing synthetic resin pipe by maintaining physical properties such as durability and light weight while having bacteria and not being harmful to the human body.

In addition, synthetic resin water pipes used as water pipes have the advantage of being light in weight, easy to handle and transport, and easy to join and repair through adhesive or socket connection and butt fusion, but have significantly lower impact strength. It has the disadvantage that it cannot withstand external pressure and is easily damaged.

On the other hand, the present applicant recognized the need for the above-described technology and invented 'a polyvinyl chloride resin composition for synthetic resin pipes and a polyvinyl chloride pipe manufactured therefrom' through Korean Patent Registration No. 10-1378581.

Korean Patent Registration No. 10-0954782 protects the pressure-resistant layer and reinforces the strength of the water pipe when extruding a synthetic resin pipe in the form of a multi-layer pipe, and protects it from scratches, scratches, and external shocks. Disclosed is a synthetic resin pipe that can be recycled 100% by easily peeling the outer skin layer.

The present applicant intends to improve this to further enhance and maintain durability, and propose a new configuration with excellent connectivity below.

Republic of Korea Patent Registration No. 10-1378581 Republic of Korea Patent Registration No. 10-0954782

The present invention has been made in view of and solving the above-mentioned conventional problems, and an object thereof is to provide a synthetic resin pipe reinforced with an outer skin layer having improved connectivity and durability.

In order to achieve the above object, a synthetic resin pipe reinforced with an outer skin layer having improved connectivity and durability according to the present invention comprises a main layer constituting a main body, an inner skin layer formed as a thin film on the inner circumferential surface of the main layer, and an outer skin layer formed as a thin film on the outer circumferential surface of the main layer. A synthetic resin tube consisting of; A connecting sheet for connecting the two synthetic resin tubes, which are continuously disposed by being fastened by screws while wrapping a joint of two continuously disposed synthetic resin tubes, seated on a peeled portion where a part of the surface of the skin layer is peeled off and exposed to the outside; and a watertight layer provided between the peeling portion and the connecting sheet to make the joint watertight as the connecting sheet is pressed by a screw, wherein the synthetic resins of the main layer and the inner skin layer are vinyl chloride, polyethylene, polystyrene, polyester, It is one kind of soft synthetic resin selected from polypropylene and polycarbonate, and the synthetic resin of the outer skin layer is a hard material.

In addition, a guide groove is formed on the surface of the skin layer to reduce the thickness so that peeling can be easily performed, and a protruding line for guiding and fixing the position of the connecting sheet protrudes along the circumference of the synthetic resin pipe in the peeling portion, A pair of recessed lines into which the protruding lines of each of the two continuously disposed synthetic resin tubes are inserted are formed on the upper surface of the connecting sheet.

In addition, the connecting sheet includes a pair of connecting protrusion lines integrally protruding downward from both ends of the connecting sheet; a watertight member provided on an outer surface of the connection protrusion line; and a plurality of screw holes formed in the connection protrusion line so that the screws pass through and fasten with the nut, and when the connection sheet is seated on the peeling portion and surrounds the outer circumferential surfaces of the two continuously disposed synthetic resin tubes, the pair of The outer surfaces of the connecting protrusion lines face each other, and the watertight member is pressed as the connecting sheet is tightened by screws and nuts.

In addition, when the connecting sheet is seated on the peeling portion and wraps around the outer circumferential surfaces of the two continuously disposed synthetic resin tubes, the outer surface of each of the pair of connecting protrusion lines facing each other is in contact with the inner surface and upper surface of the opposite side , A pair of packing members made of a metal material provided along the longitudinal direction of each of the pair of connection protrusion lines; further comprising, wherein each of the packing members has a through hole through which a screw passes at a position corresponding to the screw hole, there is.

In addition, the synthetic resin pipe contains 5 to 10 parts by weight of an impact modifier selected from MBS (Methacrylate butadiene styrene), CPE (Chlorinated Poly Ethylene), and ABS (Acrylonitrile butadiene styreneterpolymer) based on 100 parts by weight of the synthetic resin; 5 to 15 parts by weight of mineral powder coated by surface treatment with stearic acid or terpene-containing essential oil; 1 to 20 parts by weight of graphene by graphene powder or graphene solution; It is made of a synthetic resin pipe composition comprising a, characterized in that the mineral powder is at least one selected from light calcium carbonate, elvan, germanium, zeolite, volcanic stone, illite, bentonite, and sericite.

In addition, the inner skin layer further includes; 100 to 125 ppm by weight of silver powder having a particle size of 21 to 500 nm.

In addition, the synthetic resin is a POM (acetal) resin (sub-material) having excellent dimensional stability, self-lubrication, and resistance to shock and vibration, in addition to one selected from among vinyl chloride, polyethylene, polystyrene, polyester, polypropylene, and polycarbonate (main material). ), but the main material : sub material = 1 ~ 1.2 : 0.1 ~ 0.3 in the weight ratio.

In addition, the synthetic resin pipe composition includes 3 to 10 parts by weight of a stabilizer of at least one of Ba-Zn (barium-zinc), Ca-Zn (calcium-zinc), triazole, benzophenone, and HALS; It is configured to further include; 0.3 to 3 parts by weight of a processing aid obtained by emulsion polymerization of acrylate-based monomers.

According to the present invention, it is easy to connect two synthetic resin pipes that are continuously arranged and connected to each other, and a synthetic resin pipe reinforced with an outer skin layer having improved connectivity and durability using a connecting sheet can be provided.

1 is a cross-sectional view of a synthetic resin pipe according to an embodiment of the present invention.
2 is a diagram illustrating the formation of guide grooves in a synthetic resin pipe according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view of section AA of FIG. 2 .
4 is a cross-sectional view of the BB section of FIG. 2;
5 is a state diagram of an end separation state for fastening with a connecting sheet according to an embodiment of the present invention.
Figure 6 is a cross-sectional view of a connecting sheet for watertightly connecting the joint of two synthetic resin pipes arranged consecutively in an embodiment of the present invention.
7 is a cross-sectional view of a connecting sheet according to an embodiment of the present invention.
8 is a plan view of the connecting sheet of FIG. 7;
Figure 9 is a bottom view of the connecting sheet of Figure 7;
10 is a cross-sectional view showing a state in which a connecting sheet according to an embodiment of the present invention is fastened to a synthetic resin pipe.
11 is a cross-sectional view showing a state in which fastening to a synthetic resin pipe is completed by a connecting sheet according to an embodiment of the present invention.
12 is a plan view showing the center of the joint of two synthetic resin pipes connected by a connecting sheet according to an embodiment of the present invention.
13 is a schematic process diagram showing a manufacturing process of a synthetic resin pipe according to an embodiment of the present invention.
14 is a process chart showing the mineral powder preparation step in the manufacturing process of the synthetic resin pipe according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, but these embodiments are intended to fully inform those skilled in the art of the scope of the invention to which the present invention belongs. It is provided for, and matters obvious to those skilled in the art may be omitted. In addition, the same reference numerals refer to the same members throughout each embodiment. On the other hand, the thickness or dimensions of each component shown in the drawings may be exaggerated for convenience of description, and it does not mean that the dimensions or proportions between the components should actually be configured.

1 is a cross-sectional view of a synthetic resin pipe 100 according to an embodiment of the present invention.

Referring to FIG. 1, a synthetic resin pipe 100 reinforced with an outer skin layer 110 having improved connectivity and durability according to the present invention has a main layer 120 constituting a main body and an endothelium formed as a thin film on the inner circumferential surface of the main layer 120. It includes a layer 130 and an outer skin layer 110 formed as a thin film on the outer circumferential surface of the main layer 120.

The main layer 120 and the outer skin layer 110 may be manufactured by extrusion at the same time, and the synthetic resin of the main layer 120 and the inner skin layer 130 is selected from vinyl chloride, polyethylene, polystyrene, polyester, polypropylene, and polycarbonate. It is one type of soft synthetic resin, and the synthetic resin of the outer skin layer 110 is a hard material.

FIG. 2 is a diagram showing the formation of guide grooves 111 of the synthetic resin pipe 100 according to an embodiment of the present invention, FIG. 3 is a cross-sectional view of section A-A in FIG. 2, and FIG. 4 is a cross-sectional view of section B-B in FIG.

In addition, Figure 5 is a view of the end separation state for fastening with the connecting sheet 200 according to an embodiment of the present invention, and Figure 6 is a joint of two synthetic resin pipes 100 continuously disposed in the embodiment of the present invention ( 140) is a cross-sectional view of the connecting sheet 200 that connects watertightly.

2 to 6, the outer skin layer 110 has a guide groove 111 to reduce the thickness on the outer surface so that peeling can be easily performed. The depth (h) of the guide groove 111 Is formed thinner than the thickness (d) of the outer skin layer 110, the guide groove 111 is the first guide groove 111a formed along the pipe circumference at both ends of the synthetic resin pipe 100, the synthetic resin pipe ( 100) is formed of a second guide groove 111b formed along the longitudinal direction.

That is, in order to partially peel the outer skin layer 110 at both ends, which are fastening parts of the connecting sheet 200 of the synthetic resin pipe 100, the first guide groove 111a is formed along the circumference of the pipe, and in addition, the synthetic resin pipe ( When discarding 100), the main layer 120, the inner skin layer 130, and the outer skin layer 110 are separated and treated to form second guide grooves 111b along the longitudinal direction so that recycling can be easily performed.

The synthetic resin tubes 100 may be extended by being continuously arranged and connected to each other as needed. To this end, the outer skin layer 110 at the end of the synthetic resin tube 100 is peeled off to secure a joint with the connecting sheet 200. do.

At this time, the outer skin layer 110 at the end of the synthetic resin tube 100, which is the joint of the connecting sheet 200 for connecting the two continuously disposed synthetic resin tubes 100, along the first guide groove 111a. incision is made.

When an impact is applied to the first guide groove 111a with a sharp cutter or the like while pushing and pressurizing the portion of the outer skin layer 110 to be peeled off, one end of the outer skin layer 110 is peeled off as shown in FIG. The store connecting sheet 200 is fastened to the site.

As the end of the outer skin layer 110 is peeled along the first guide groove 111a, and the connection sheet 200 is fastened to the peeled portion 113, the synthetic resin pipe 100 and the connection sheet, compared to other cases, At the same time as the bonding force of the 200 increases, the fastening operation of the connecting sheet 200 can be made quickly.

In addition, when discarding the synthetic resin pipe 100, the main layer 120, the inner skin layer 130, and the hard outer skin layer 110 must be separated. The synthetic resin pipe 100 according to the embodiment of the present invention has a second guide groove. The peeling operation can be easily performed using (111b).

That is, when the thickness of the outer layer 110 is thinner than other parts along the second guide groove 111b formed on the outer circumferential surface of the outer skin layer 110, and pressure is applied to the second guide groove 111b, the second guide Separation of the outer layer 110 from the main layer 120 can be facilitated along the groove 111b.

On the other hand, the synthetic resin tube 100 according to the embodiment of the present invention can be extended by connecting two different synthetic resin tubes 100 as needed. At this time, the two synthetic resin tubes 100 that are continuously arranged and connected are It can be connected using the connecting sheet 200.

At this time, the connecting sheet 200 is seated on the peeling portion 113 where a part of the surface of the outer skin layer 110 is peeled off and exposed to the outside, and the joint 140 of the two synthetic resin pipes 100 that are continuously disposed. While wrapping, the two synthetic resin pipes 100, which are continuously disposed by being tightened by screws 400, are connected.

In addition, in connecting the two synthetic resin tubes 100 continuously disposed according to the embodiment of the present invention, the connection sheet 200 is provided between the peeling portion 113 and the connection sheet 200 by means of a screw. It may include a watertight layer 300 that makes the joint 140 watertight as it is pressurized.

The watertight layer 300 may be a non-toxic adhesive that does not elute harmful substances or an eco-friendly adhesive made mainly of natural materials such as corn and starch, and may be self-adhesive silicon tape or a shape capable of wrapping the joint 140 It can be formed using a sheet of eco-friendly rubber material.

As the watertight layer 300 is pressurized when the connecting sheet 200 is tightened, the watertightness of preventing contents passing through the inside of the synthetic resin pipe 100 through the joint 140 from leaking out can be further improved.

7 is a cross-sectional view of a connecting sheet 200 according to an embodiment of the present invention, FIG. 8 is a plan view of the connecting sheet 200 of FIG. 7 , and FIG. 9 is a bottom view of the connecting sheet 200 of FIG. 7 .

7 to 9, the connection sheet 200 is seated on a peeled portion 113 in which a part of the surface of the outer layer 110 is peeled in order to be fixed after being in close contact with the outer circumferential surface of the outer skin layer 110 to connect to each other. A pair of connecting protrusion lines 220 tightening the ends of the outer skin layer 110 of the synthetic resin pipe 100 are formed at both ends.

At this time, the pair of connecting protruding lines 220 integrally protrude downward from both ends of the connecting sheet 200, and the connecting protruding line 220 has an outer surface 221 of the connecting protruding line 220. It may be configured to include a plurality of screw holes 240 formed in the connecting protrusion line 220 so that the watertight member 230 and the screw 400 provided in the ) pass through and fasten with the nut 500.

In addition, referring to FIGS. 5 and 6 together, in the peeling portion 113 of the connecting sheet 200, a protruding line 112 for guiding and fixing the position of the connecting sheet 200 is formed around the synthetic resin pipe 100. A pair of recessed lines 210 protruding along and into which the protruding lines 112 of each of the two synthetic resin tubes 100 continuously disposed on the upper surface 223 of the connecting sheet 200 are inserted this is formed

As the protruding line 112 formed on the separated portion 113 of the two synthetic resin tubes 100 on which the connecting sheet 200 is continuously disposed is inserted into the recessed line 210 of the connecting sheet 200, the connection is made. When the sheet 200 is seated on the peeling portion 113, the seating position of the connecting sheet 200 can be quickly set, and accordingly, the connection of the two synthetic resin pipes 100 that are continuously arranged can be quickly performed. do.

In addition, the connecting sheet 200 can always cover the peeling portion 113 of the synthetic resin pipe 100 at a constant position, so that the joint 140 is always located in the center of the connecting sheet 200, so that the synthetic resin is connected. Connectivity of the tubes 100 can be evenly improved.

10 is a cross-sectional view showing a state in which the connecting sheet 200 according to the embodiment of the present invention is fastened to the synthetic resin pipe 100, and FIG. 11 is the connecting sheet 200 according to the embodiment of the present invention is connected to the synthetic resin pipe ( 100) is a cross-sectional view showing a state in which fastening is completed, and FIG. 12 is a plan view showing the joint 140 of two synthetic resin pipes 100 connected by a connecting sheet 200 according to an embodiment of the present invention. am.

10 to 12, when the connecting sheet 200 is seated on the peeling portion 113 and surrounds the outer circumferential surfaces of the two continuously disposed synthetic resin tubes 100, the pair of connecting protruding lines 220 The outer surfaces 221 face each other, and as the connecting sheet 200 is tightened by the screw 400 and the nut 500, the watertight member 230 is pressed.

The watertight member 230 may be a non-toxic adhesive that does not elute harmful substances or an eco-friendly adhesive made mainly of natural materials such as corn and starch, and may be a self-adhesive silicon tape or an outer surface of the connection protrusion line 220 ( 221), it can be formed using a sheet of eco-friendly rubber material that can be padded.

On the other hand, when the connecting sheet 200 is seated on the peeling portion 113 and wraps around the outer circumferential surfaces of the two synthetic resin tubes 100 continuously disposed, each of the pair of connecting protruding lines 220 facing each other A pair of packing members 600 made of metal that are in contact with the inner surface 222 and the upper surface 223 opposite to the outer surface 221 and are provided along the longitudinal direction of each of the pair of connection protrusion lines 220. ) May further include, in each of the packing member 600, a through hole 610 through which the screw 400 passes is formed at a position corresponding to the screw hole 240, so that the screw 400 passes through the through hole 610. ) And the screw hole 240 in turn pass through the nut 500 through the connection sheet 200 can be tightened.

By including the packing member 600, the screw 400 and the nut 500 tighten the packing member 600 without pressurizing and tightening all parts in the longitudinal direction of the connection protrusion line 220. Therefore, it can propagate along the longitudinal direction of the connecting protrusion line 220 and is made of a material having flexibility so that it can be seated on the peeling portion 113 of the synthetic resin pipe 100 and wrap the synthetic resin pipe 100 along the circumference of the pipe. It is possible to protect the connecting protrusion line 220 of the connecting sheet 200 from external impact.

The packing member 600 has a cross section of "┌" or "┐" corresponding to the shape of the connection protrusion line 220. However, at this time, the upper surface 223 of the packing member 600 has an inner surface 222 and an upper surface 223 on the connecting protruding line 220 so as not to come into contact with all of the upper surface 223 of the connecting protruding line 220. This is to provide a path protruding to the outside as the watertight member 230 is pressed and compressed by the screw 400 and the nut 500.

Through this, even if the watertight member 230 is compressed, it is prevented from being exposed to the outside beyond the connection protrusion line 220 and the packing member 600.

The process of connecting the two synthetic resin tubes 100 connected by the connecting sheet 200 is as follows.

First, a portion of the outer skin layer 110 at the end of the synthetic resin pipe 100 is peeled off by applying an impact to the first guide grooves 111a to be connected to each other using a sharp cutter, etc., and then applying pressure.

At this time, the protrusion line 112 formed on the outer skin layer 110 remaining in the peeled synthetic resin pipe 100 is exposed to the outside.

Next, the two synthetic resin tubes 100 to be connected to each other are aligned in a row.

Next, while inserting the protruding line 112 of the synthetic resin pipe 100 into the recessed line 210 of the connecting sheet 200, the peeled outer skin layer of the synthetic resin pipe 100 to connect the connecting sheet 200 to each other ( 110) so that the outer surfaces 221 of the pair of connection protrusion lines 220 face each other.

Next, the outer surface 221 of each of the pair of connection protrusion lines 220 facing each other along the length direction of each of the pair of connection protrusion lines 220, the packing member 600 made of a metal material. ) to abut the inner surface 222 and the upper surface 223 on the opposite side.

At this time, the through hole 610 and the screw hole 240 are aligned side by side in a one-to-one correspondence.

Finally, any one screw hole 240 included in any one of the pair of connecting protrusion lines 220 in which the screw 400 faces each other and the pair of connecting protrusion lines 220 ) to the connecting protrusion line 220 while tightening the connecting sheet 200 while fastening to the nut 500 while sequentially passing through any one screw hole 240 included in the other connecting protruding line 220. The provided watertight member 230 is compressed to connect the two synthetic resin tubes 100 arranged in succession to each other.

A protrusion line 112 is formed on the peeled outer skin layer 110 of the synthetic resin pipe 100 according to an embodiment of the present invention, and the protrusion line 112 is formed on the depression line 210 formed on the connecting sheet 200 By this insertion, not only the fastening position of the connecting sheet 200 is guided, but also the fastening force between the connecting sheet 200 and the synthetic resin pipe 100 is increased.

In addition, since the protrusion line 112 protrudes to the outside of the peeled outer skin layer 110, foreign substances penetrate into the synthetic resin pipe 100 along the joint between the connecting sheet 200 and the synthetic resin pipe 100. It is difficult to prevent corrosion of the joint between the synthetic resin pipe 100 and the connecting sheet 200.

The synthetic resin pipe composition used to manufacture the synthetic resin pipe 100 reinforced with the outer skin layer 110 having improved connectivity and durability according to an embodiment of the present invention may include a synthetic resin, an impact modifier, mineral powder, and graphene. .

Here, it may be configured to further include a stabilizer and a processing aid, and other additives may be additionally used.

The synthetic resin pipe composition according to an embodiment of the present invention contains 5 to 10 parts by weight of an impact modifier based on 100 parts by weight of the synthetic resin, 5 to 15 parts by weight of mineral powder coated by surface treatment with stearic acid or essential oil containing tefphen, graphene 1 It may be a composition comprising ~ 20 parts by weight.

In addition, it may be a composition further comprising 3 to 10 parts by weight of a stabilizer and 0.3 to 3 parts by weight of a processing aid based on 100 parts by weight of the synthetic resin, and the processing aid is preferably applied by emulsion polymerization of an acrylate-based monomer.

At this time, the soft synthetic resin used for the main layer 120 and the inner skin layer 130 may be one selected from vinyl chloride, polyethylene, polystyrene, polyester, polypropylene, and polycarbonate, and used for the outer skin layer 110. The synthetic resin to be can be made of a synthetic resin of a hard material including polypropylene.

As the synthetic resin of the outer skin layer 110 is made of a hard material, it is not easily damaged by external impact, so the durability of the synthetic resin pipe 100 increases.

In addition, the synthetic resin is a POM (acetal) resin (sub-material) having excellent dimensional stability, self-lubrication, and resistance to shock and vibration, in addition to one selected from among vinyl chloride, polyethylene, polystyrene, polyester, polypropylene, and polycarbonate (main material). ) may be a combination of

At this time, the synthetic resin may be formulated in a weight ratio of main material: sub material = 1 to 1.2: 0.1 to 0.3.

The impact modifier is a fibrous insoluble material added to the synthetic resin to increase the impact strength of the product, and may be one selected from MBS (Methacrylate butadiene styrene), CPE (Chlorinated Poly Ethylene), and ABS (Acrylonitrile butadiene styreneterpolymer). there is.

The mineral powder may be one or more powder particles selected from elvan, germanium, zeolite, volcanic stone, illite, bentonite, and sericite.

At this time, the mineral powder is preferably coated by surface treatment with stearic acid or terpene-containing essential oil having antibacterial properties.

The terpene-containing essential oil can enhance the dispersibility of the mineral powder with synthetic resins and other ingredients while imparting lubrication to have fluid flowability and further strengthening antibacterial properties.

The mineral powder and terpene-containing essential oil can exhibit antibacterial and deodorizing functions, and have negative ion and far-infrared emission functions.

The mineral powder and terpene-containing essential oil enable antibacterial properties of the synthetic resin tube 100 to be manufactured while maintaining light weight.

The mineral powder may have durability such as strength improvement of the synthetic resin pipe 100 to be manufactured, and may have heat resistance and flame retardancy.

The mineral powder is used after being reprocessed to have an average particle size of 1,000 mesh or more. This is to solve the problem of greatly reducing the physical properties of the synthetic resin pipe 100 by increasing the abrasion of the extruder screw during production of the synthetic resin pipe 100 when using mineral powder of about 325 mesh in general.

The essential oil is 1 selected from lavender oil, rosemary oil, sulfur oil, citronella oil, lemon oil, cedarwood atlas oil, clove oil, basil oil, bergamot oil, eucalyptus oil, chamomile oil, jasmine oil, and cinnamon oil. More than one species may be used.

Here, the mineral powder coated by surface treatment with the terpene-containing essential oil is elvan, germanium, zeolite, volcanic stone, illite, bentonite, 80 to 95% by weight of mineral powder and terpene It may be added with 5 to 20% by weight of contained essential oil, stirred for 30 to 40 minutes at a temperature of 40 to 60 ° C, and then dried by irradiating UV (ultraviolet) or far-infrared rays for 30 to 60 minutes. .

Here, when the UV (ultraviolet ray) or far-infrared ray is irradiated, it is possible to increase the adhesion of the mineral powder side, which is a particle structure, by inducing a chemical reaction on the essential oil side, thereby improving the coating efficiency. can improve antibacterial properties.

At this time, when less than 5% by weight of the essential oil is added, it is difficult to uniformly surface treat the entire mineral powder, and antibacterial and deodorizing functions are insufficiently strengthened. When manufacturing the tube 100, stability and durability are deteriorated, as well as problems that are not economical.

The graphene is a material with high physical and chemical stability, and provides structural stability to the manufactured synthetic resin tube 100, increases durability such as strength, and can maintain light weight because it is light.

The graphene can use graphene powder or graphene solution, can enhance antibacterial and deodorizing functions, can improve hygiene by neutralizing and suppressing harmful genetic factors of bacteria or microorganisms, and can reduce static electricity generation. It can prevent and impart wear resistance.

Here, when less than 1 part by weight of the graphene is used, functionalities such as antibacterial and deodorizing are insufficient, and when it exceeds 20 parts by weight, uneconomic problems such as increased material costs and production costs occur.

The stabilizer is for stability and processability in the manufacture of the synthetic resin pipe 100, and is at least one of Ba-Zn (barium-zinc), Ca-Zn (calcium-zinc), triazole, benzophenone, and HALS. can be used.

The processing aid may increase processability when manufacturing the synthetic resin pipe (100).

In addition, the antibacterial synthetic resin pipe composition for preparing the synthetic resin pipe 100 used for the inner skin layer 130 of the present invention may further include 100 to 125 ppm by weight of silver powder having a particle size of 21 to 500 nm.

Silver (Ag) has antibacterial properties, resistance to silver does not occur in bacteria, and the antibacterial duration is almost semi-permanent, so its use area is expanding, but recently, excessive intake of silver powder is harmful to the human body. It has been found out that silver is also needed for proper use of powder.

Accordingly, the present invention set the formulation of silver (Ag) nano-powder in consideration of the amount of mineral powder added so that it is harmless to the human body and maintains antibacterial properties.

In the synthetic resin pipe composition used for the inner skin layer 130 according to the present invention, in addition to the antibacterial function of mineral powder and essential oil, silver nanopowder is further added to maintain optimal antibacterial properties. In order to be harmless to and have antibacterial properties, 100 to 125 ppm by weight of silver nanopowder of 21 to 500 nm may be added.

At this time, when the silver nano-powder is mixed in an amount less than 100 ppm by weight, antibacterial activity against a specific strain is reduced, and when mixed in an amount exceeding 125 ppm by weight, a more enhanced effect cannot be expected.

In addition, the powder size of the silver nano-powder considers the particle size of the elvan powder for uniform mixing.

That is, the silver nano-powder having a particle size of 21 to 500 nm is positioned between the re-processed mineral powder having a porosity of 1,000 mesh or more during agitation and mixing, and can be uniformly dispersed together with the mineral powder in the synthetic resin.

In addition, the synthetic resin pipe composition for manufacturing the synthetic resin pipe 100 having the above components and composition ratios may be provided as a master batch for ease of use and work efficiency.

On the other hand, in the present invention, the synthetic resin pipe 100 can be manufactured using the synthetic resin pipe composition having the above-described components and composition ratios. 14 is a process chart showing the mineral powder preparation step in the manufacturing process of the synthetic resin tube 100 according to an embodiment of the present invention.

13 and 14, the synthetic resin pipe 100 made of the synthetic resin pipe composition according to the present invention is a synthetic resin pipe composition preparation step (S100), melting step (S200), extrusion step (S300), cooling step (S400) ), and cutting step (S500).

The synthetic resin pipe composition preparation step (S100) is an antimicrobial synthetic resin pipe composition containing 5 to 10 parts by weight of an impact modifier, 5 to 15 parts by weight of mineral powder, and 1 to 20 parts by weight of graphene based on 100 parts by weight of synthetic resin. Weighing and preparing It is a step.

The synthetic resin pipe composition may be provided as a master batch.

The synthetic resin may be one selected from vinyl chloride, polyethylene, polystyrene, polyester, polypropylene, and polycarbonate.

In addition, the synthetic resin is a POM (acetal) resin (sub-material) having excellent dimensional stability, self-lubrication, and resistance to shock and vibration, in addition to one selected from among vinyl chloride, polyethylene, polystyrene, polyester, polypropylene, and polycarbonate (main material). ) may be a combination of

At this time, the synthetic resin may be formulated in a weight ratio of main material: sub material = 1 to 1.2: 0.1 to 0.3.

The impact modifier may be one selected from a methacrylate butadiene styrene (MBS) system, a chlorinated poly ethylene (CPE) system, and an acrylonitrile butadiene styreneterpolymer (ABS) system.

The mineral powder may be any one selected from elvan, germanium, zeolite, volcanic stone, illite, bentonite, and sericite.

Here, the mineral powder is subjected to a first crushing step (S110), a second wet grinding step (S120), heat treatment and drying step (S130) in order to increase the functionality of the mineral and to increase the grinding efficiency into fine particle powder. It may be manufactured including.

The first crushing step (S110) is a step of first crushing the mineral with a crusher.

In the second wet grinding step (S120), the first crushed minerals are put into a grinder, but distilled water: potassium nitrate (KNO3) or sodium nitrate (NaNO3) = 1 to 1.5: crushed mixed in a weight ratio or volume ratio of 0.2 to 0.5 It is a step of adding with an auxiliary agent and secondarily wet grinding and pulverizing to an average particle size of 2㎛ ~ 5㎛.

At this time, in the second wet grinding step (S120), a grinder equipped with an agitation rotor is used, but rotation is controlled at 800 rpm to 950 rpm and ceramic balls having a diameter of 2 to 3 mm are filled therein. Wet grinding treatment is preferred.

Here, the primary crushed mineral may be introduced into the grinder in an amount of 2 to 2.5 times that of potassium nitrate or sodium nitrate.

Here, the grinding aid of potassium nitrate (KNO 3 ) or sodium nitrate (NaNO 3 ) can induce fine powder particles of minerals and increase grinding efficiency.

The heat treatment and drying step (S130) is a step of heat-treating and drying the wet pulverized powder in an electric furnace such as an electric oven under conditions of 150 ° C to 250 ° C.

Here, by heat-treating the mineral powder, the antibacterial and deodorizing function of the mineral and the far-infrared radiation function can be improved.

In addition, the mineral powder may be coated by surface treatment of any one selected from elvan, germanium, zeolite, volcanic stone, illite, bentonite, and sericite with a terpene-containing essential oil having antibacterial properties.

That is, in addition to the above-described first crushing step (S110), second wet grinding step (S120), heat treatment and drying step (S130), an essential oil coating step (S140) may be further included.

The essential oil coating step (S140) may be performed in the following steps.

80 to 95% by weight of mineral powder selected from elvan, germanium, zeolite, volcanic stone, illite, bentonite, and sericite and 5 to 20% by weight of terpene-containing essential oil are added.

Here, the essential oils are lavender oil, rosemary oil, sulfur oil, citronella oil, lemon oil, cedarwood atlas oil, clove oil, basil oil, bergamot oil, eucalyptus oil, chamomile oil, jasmine oil, and cinnamon oil. It may be one or more selected from among.

The mineral powder and the terpene-containing essential oil added thereto are stirred for 30 to 40 minutes at a temperature of 40 to 60 ° C.

At this time, the synthetic resin pipe composition used for the inner skin layer 130 includes 100 to 125 ppm of silver powder having a particle size of 21 to 500 nm based on 100 parts by weight of the synthetic resin, and can be uniformly stirred by a stirrer.

UV (ultraviolet rays) or far-infrared rays are irradiated for 30 to 60 minutes to dry it.

At this time, the mineral powder is finally processed to have an average particle size of 1,000 mesh or more.

And, as the graphene, graphene powder or graphene solution may be used.

In addition, the synthetic resin pipe composition described above may further include 3 to 10 parts by weight of a stabilizer and 0.3 to 3 parts by weight of a processing aid based on 100 parts by weight of the synthetic resin.

The stabilizer may be one or more of Ba-Zn (barium-zinc)-based, Ca-Zn (calcium-zinc)-based, triazole-based, benzophenone-based, and HALS-based.

The processing aid may be obtained by emulsion polymerization of acrylate-based monomers.

Here, even in the case of the synthetic resin pipe composition further comprising the stabilizer and the processing aid may be provided as a master batch.

The melting step (S200) is a step of melting the synthetic resin pipe composition having the above-described components and composition ratio.

The extruding step (S300) is a step of forming a synthetic resin pipe 100 having a pipe structure having a predetermined diameter by extruding the molten antibacterial synthetic resin pipe composition.

At this time, the synthetic resin pipe 100 of the present invention has a three-layer structure of an outer skin layer 110, a main layer 120, and an inner skin layer 130, and these three layers can be simultaneously extruded using a three-layer extruder. there is.

In addition, the three-layer synthetic resin pipe 100 may be manufactured by supplying the antibacterial synthetic resin pipe composition and the synthetic resin pipe composition containing silver nanoparticles through separate supply channels during extrusion molding through the extruder.

The cooling step (S400) is a step of cooling the synthetic resin pipe 100 having an extruded pipe structure.

The cutting step (S500) is a step of cutting the synthetic resin pipe 100 that has finished the cooling step into a predetermined length.

On the other hand, the antibacterial properties of the synthetic resin pipe composition described above were examined.

(Example 1)

The inner skin layer 130 is composed of 5 parts by weight of CPE (Chlorinated Poly Ethylene) based impact modifier, 10 parts by weight of illite powder coated with cinnamon oil, 5 parts by weight of graphene powder, and 110 ppm of silver powder based on 100 parts by weight of polyethylene. The main layer 120 was composed of 5 parts by weight of CPE (Chlorinated Poly Ethylene) based impact modifier, 10 parts by weight of illite powder coated with cinnamon oil, and 5 parts by weight of graphene powder based on 100 parts by weight of polyethylene, and the outer layer ( 110) was composed of 5 parts by weight of CPE (Chlorinated Poly Ethylene) based impact modifier, 10 parts by weight of illite powder coated with cinnamon oil, and 5 parts by weight of graphene powder based on 100 parts by weight of hard polypropylene.

(Example 2)

The inner skin layer 130 and the main layer 120 were composed of 5 parts by weight of CPE (Chlorinated Poly Ethylene)-based impact modifier, 10 parts by weight of illite powder, and 3 parts by weight of graphene powder based on 100 parts by weight of polyethylene, and the outer skin layer 110 Based on 100 parts by weight of hard polypropylene, 5 parts by weight of a CPE (Chlorinated Poly Ethylene)-based impact modifier, 10 parts by weight of illite powder, and 3 parts by weight of graphene powder were prepared.

(Comparative Example 1)

The inner skin layer 130 and the main layer 120 were composed of 5 parts by weight of CPE (Chlorinated Poly Ethylene)-based impact modifier and 10 parts by weight of illite powder based on 100 parts by weight of polyethylene, and the outer skin layer 110 was composed of 100 parts by weight of hard polypropylene Based on the parts, it was composed of 5 parts by weight of CPE (Chlorinated Poly Ethylene)-based impact modifier and 10 parts by weight of illite powder.

(Comparative Example 2)

The inner skin layer 130 and the main layer 120 were composed of 5 parts by weight of a CPE (Chlorinated Poly Ethylene) based impact modifier based on 100 parts by weight of polyethylene, and the outer skin layer 110 was composed of CPE (Chlorinated Poly Ethylene) based on 100 parts by weight of hard polypropylene. Ethylene)-based impact modifier was composed of 5 parts by weight.

The antibacterial properties were tested for Examples 1 and 2 and Comparative Examples 1 and 2, and the results are shown in Table 1 below.

Antibacterial properties are measured by the Shake Flask method (inserting a test piece as an antibacterial product sample into a culture medium in which a specific bacteria is cultured, maintaining it for a certain period of time while shaking the culture medium and the test piece in which the bacteria are cultured, then survival later than the initial Method for measuring the number of bacteria), Escherichia coli was selected as a specific bacteria, and the number of surviving bacteria after 12 hours and 24 hours at 18 ° C was measured.

division Initial E. coli count
(cfu/ml) after 12 hours
viable E. coli count 24 hours later
viable E. coli count Example 1 1.6 × 10 ⁶ 2.0 ×10 ² 0.5 × 10 ¹ Example 2 1.6 × 10 ⁶ 3.6 ×10 ³ 16.4×10 ¹ Comparative Example 1 1.6 × 10 ⁶ 11.4 × 10 ³ 1.2 ×10 ³ Comparative Example 2 1.6 × 10 ⁶ 20.8×10 ⁶ 62.6 × 10 ⁶

As shown in Table 1, it can be confirmed that the number of Escherichia coli is significantly reduced when using the synthetic resin pipe composition (Examples 1 and 2) according to the present invention. It can be confirmed that a difference occurs, and in Comparative Example 2, which is a non-use example, it can be confirmed that the number of E. coli increases.

In addition, synthetic resin tubes 100 were extruded with the compositions of Examples 1 and 2 and Comparative Example 1, and anion and far-infrared radiation were tested for this, and the results are shown in Table 2 below.

At this time, far-infrared emissivity and radiant energy were measured with an FT-IR spectrophotometer at 40 ° C, and anion emission analysis was measured by the KICM-FIR-1042 method.

division Example 1 Example 2 Comparative Example 1 Emissivity (5~20㎛) 0.936 0.917 0.726 Radiation energy (w/㎡㎛) 4.78 × 10 ² 4.12 × 10 ² 2.09 × 10 ² Anion (average number/cc) 1032/cc 923/cc 716/cc

As shown in Table 2, it can be confirmed that the synthetic resin pipe composition according to the present invention (Examples 1 and 2) shows a more excellent effect than Comparative Example 1 in terms of negative ion and far-infrared radiation.

Let's take a look at the effect of using the synthetic resin pipe 100 of the present invention constituting the structure of the connecting sheet 200 and the guide groove 111.

First, the synthetic resin pipe 100 of the present invention is manufactured in a four-step process of melting-extrusion-cooling-cutting using the antibacterial synthetic resin pipe composition for manufacturing the synthetic resin pipe 100 as described above, and in the extrusion process, the outer layer (110), the main layer (120), and the endothelial layer (130) are simultaneously extruded.

Accordingly, through the present invention, the antibacterial properties of the synthetic resin pipe 100 can be improved, durability can be strengthened while maintaining light weight, and the flowability of fluid can be increased when used in water supply pipes, sewer pipes or sewage pipes, and microorganisms Alternatively, it is possible to provide and manufacture a synthetic resin pipe 100 that can improve the environment in which bacteria easily propagate.

The embodiments described above are merely those of preferred embodiments of the present invention, and are not extremely limited to these embodiments, and various modifications and variations or modifications by those skilled in the art within the scope of the technical spirit and claims of the present invention. It will be said that the substitution of steps can be made, which will fall within the scope of the technical rights of the present invention.

100: synthetic resin pipe
110: outer skin layer
111: guide home
112: projection line
113: peeling part
120: main floor
130: inner skin layer
200: connection sheet
300: watertight layer
400: screw
500: nut
600: packing member

Claims (8)

A synthetic resin pipe composed of a main layer constituting a main body, an inner skin layer formed as a thin film on an inner circumferential surface of the main layer, and an outer skin layer formed as a thin film on an outer circumferential surface of the main layer;
A connecting sheet for connecting the two synthetic resin tubes, which are continuously disposed by being fastened by screws while wrapping a joint of two continuously disposed synthetic resin tubes, seated on a peeled portion where a part of the surface of the skin layer is peeled off and exposed to the outside; and,
A watertight layer provided between the peeling portion and the connecting sheet to make the joint watertight as the connecting sheet is pressed by a screw,
The synthetic resin of the main layer and the inner skin layer is a soft synthetic resin selected from among vinyl chloride, polyethylene, polystyrene, polyester, polypropylene, and polycarbonate, and the synthetic resin of the outer skin layer is a hard material,
Guide grooves are formed on the surface of the outer skin layer to reduce the thickness so that peeling can be easily performed,
In the peeling portion, a protruding line for guiding and fixing the position of the connecting sheet protrudes along the circumference of the synthetic resin pipe,
A pair of recessed lines into which the protruding lines of each of the two continuously disposed synthetic resin tubes are inserted are formed on the upper surface of the connecting sheet,
The connecting sheet,
a pair of connecting protrusion lines integrally protruding downward from both ends of the connecting sheet;
a watertight member provided on an outer surface of the connection protrusion line; and,
A plurality of screw holes formed in the connecting protrusion line so that the screw passes through and is fastened with the nut,
When the connecting sheet is seated on the peeling portion and surrounds the outer circumferential surfaces of the two continuously disposed synthetic resin tubes, the outer surfaces of the pair of connecting protrusion lines face each other,
A synthetic resin pipe reinforced with an outer skin layer with improved connectivity and durability to which the watertight member is pressed as the connecting sheet is tightened by screws and nuts. delete delete According to claim 1,
When the connecting sheet is seated on the peeling portion and wraps around the outer circumferential surfaces of two continuously disposed synthetic resin tubes, the outer surface of each of the pair of connecting protrusion lines facing each other is in contact with the inner surface and upper surface of the opposite side, A pair of packing members made of a metal material provided along the longitudinal direction of each of the pair of connecting protrusion lines; further comprising,
A synthetic resin pipe reinforced with an outer skin layer having improved connectivity and durability, in which each of the packing members has a through hole through which a screw passes at a position corresponding to the screw hole. According to claim 1,
The synthetic resin pipe,
With respect to 100 parts by weight of synthetic resin,
5 to 10 parts by weight of an impact modifier selected from MBS (Methacrylate butadiene styrene), CPE (Chlorinated Poly Ethylene), and ABS (Acrylonitrile butadiene styreneterpolymer);
5 to 15 parts by weight of mineral powder coated by surface treatment with stearic acid or terpene-containing essential oil;
1 to 20 parts by weight of graphene by graphene powder or graphene solution; It is made of a synthetic resin pipe composition comprising a,
The mineral powder is a synthetic resin tube reinforced with an outer layer with improved connectivity and durability, characterized in that at least one selected from light calcium carbonate, elvan, germanium, zeolite, volcanic stone, illite, bentonite, and sericite. According to claim 1,
The inner skin layer has a particle size of 21 to 500 nm and 100 to 125 ppm by weight of silver powder; a synthetic resin pipe reinforced with an outer skin layer with improved connectivity and durability. According to claim 1,
The synthetic resin,
In addition to one selected from among vinyl chloride, polyethylene, polystyrene, polyester, polypropylene, and polycarbonate (main material), POM (acetal) resin (sub-material) with excellent dimensional stability, self-lubrication, and resistance to shock and vibration is mixed. Become
Main material : Sub material = 1~1.2 : Synthetic resin pipe reinforced with an outer skin layer with improved connectivity and durability mixed in a weight ratio of 0.1~0.3. According to claim 1,
The synthetic resin pipe composition includes 3 to 10 parts by weight of a stabilizer of at least one of Ba-Zn (barium-zinc), Ca-Zn (calcium-zinc), triazole, benzophenone, and HALS;
0.3 to 3 parts by weight of a processing aid obtained by emulsion polymerization of acrylate-based monomers; a synthetic resin pipe reinforced with an outer layer having improved connectivity and durability, further comprising.

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