KR20160096982A - DC double-walled sewer method for friction coefficient decreases with inner reinforcement - Google Patents

Abstract

The present invention relates to a method for producing DC double-walled drain pipe for friction coefficient reduction and inner diameter reinforcement. More specifically, the present invention relates to a method for producing DC double-walled drain pipe for friction coefficient reduction and inner diameter reinforcement, which coats inner pipe formed in a inner diameter or the inner diameter with silicone while molding the DC double-walled drain pipe which continuously molds a groove part and a projection part externally, thereby increasing water permeability by friction coefficient reduction and improving hardness.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a double-walled sewer pipe,

The present invention relates to a method of manufacturing a double wall sewage pipe for reducing the friction coefficient and reinforcing an inner diameter, and more particularly, to a method of manufacturing a double wall sewage pipe for molding a double wall sewer pipe which continuously forms a protruding portion and a groove portion on the outside, The present invention relates to a method of manufacturing a double wall sewage pipe for reinforcing an inner diameter of a pipe, and more particularly, to a method of manufacturing a double wall sewage pipe for reinforcing an inner diameter.

In general, polyethylene (PE) and polypropylene (PP) are extruded and extruded into tapes for sewerage, sewage and sewage, and are used as a means for transferring fluids to the required places.

The conventional water supply and sewage pipe has a DC double wall sewer pipe in which a groove portion and a protrusion portion are continuously formed by a mold that rotates while being divided, and an inner pipe is extruded with an inner diameter.

The DC double-walled sewage pipe is configured such that the groove and the protruding portion are continuously formed by a mold which rotates in two stages in the process of being melted and supplied in the extruder, and the inner circumferential pipe is extruded by the inner diameter of the groove and the protruding portion And the groove portion is connected to the outside diameter of the landscape to form a double wall shape.

However, there is a dual structure sewage pipe having a single structure, a single structure, an inner layer and an outer layer, and a sewer pipe having a middle layer between the inner layer and the outer layer, since the inner pipe does not normally provide the fluid flow, A drawback was that a larger pipe was required when designing the water supply capability.

The DC double-walled sewage pipe and the sewer pipes of various structures are buried in the ground, or if the repair or re-installation is necessary, the inner diameter is photographed using CCTV, and the wear and damage of the inner diameter is read, but the inner diameter is mostly black Therefore, it is difficult to confirm whether the inner diameter of the CCTV is fine and whether it is clogged during the photographing. Therefore, in order to prevent such a drawback, in recent years, a yellow coating material However, such a conventional coating tube was helpful in confirming whether the inner diameter was bad due to CCTV, but since the coating material was made of synthetic resin, the coefficient of friction was not improved so much, , And the above coating is not intended to improve water permeability, Since the purpose of improving both the spirit that was different purpose.

On the other hand, the basic material of silicon is quartz (silica) or silicon oxide (SiO2) and is the main component of sand that is often seen. The Romans thought it was a special form of ice, and in the 16th century, When heated, water glass is formed. When it is dissolved in water and treated with acid, it is found that solid precipitates.

In 1924, after a Swedish chemist succeeded in extracting silicon from quartz, he succeeded in producing a colorless liquid called silicon tetrachloride (SiCl4) by heating the new material in the presence of chlorine. The current manufacturing process is similar, and this silicon tetrachloride has since become the base material of organic silicon, but the earliest history of silicon research has succeeded in synthesizing a material in which organic lacquers are attached to silicon, namely silicon-carbon-silicon chains.

Silicon means a compound having a connection of silicon-oxygen-silicon, and has various characteristics such as heat resistance, cold resistance, weather resistance, chemical resistance, flame retardancy, and conductivity, There is no example applied to the sewer pipe.

In addition, as a method for improving the strength of the sewer pipe, it is preferable to increase the thickness of each part by consuming a large amount of raw material. However, since the consumed amount of the raw material is increased, It is expected that it is a good way to increase the strength while keeping the consumption amount as it is. However, it is very rare to meet the demand and various methods have been studied.

Literature 1. Patent Registration No. 0458324 (registered on Nov. 15, 2004) Document 2. Utility Model Registration No. 0296549 (Registered on Nov. 18, 2002) Literature 3. Patent Registration No. 0716063 (Registered on May 05, 2007) Literature 4. Utility Model Registration No. 0302818 (registered on January 17, 2003)

The present invention has been made in order to solve such conventional drawbacks, and it is an object of the present invention to provide a method of manufacturing a semiconductor device, It is possible to accurately photograph the defect and deformation of the inner surface through the covering portion, and to reduce the coefficient of friction to improve the water passing ability.

Another object of the present invention is to provide a compound containing 93.5 to 97.5% by weight of synthetic resin, 2 to 6% by weight of silicon and 0.5 to 1% by weight of TiO ₂ (white pigment) To form an inner surface tube made of a silicon-coated portion, thereby reducing the coefficient of friction, thereby improving the water-permeability.

Another object of the present invention is to further improve the strength of the DC double-walled sewage pipe by improving the thickness in the inner diameter direction through the silicone covering portion which is extruded or coated on the inner surface tube.

The present invention relates to an extrusion molding method comprising: an extrusion step in which a synthetic resin made of PVC is melted and extruded in an extruder; The synthetic resin extruded from the extruder is continuously formed with protruding portions and groove portions by the suction force sucked in from the air supplied from the mold apparatus or from the outside, and the protruding portion and the groove portion are formed on the inside diameter, Molding step; A cooling step of supplying cooling water by cooling with a water-cooling method so as to maintain the molding state, when the inner-diameter pipe is smoothly formed by the inner diameter of the inner diameter of the protruding portion and the groove portion continuously formed in the mold apparatus; A cutting step of cutting the cooled DC double-wall sewage pipe to a length of 6 m and supplying the same; And a discharge step of discharging the DC double wall sewage pipe which has been cut to a length of 6 m and completed the molding, to the outside,

In the extrusion step, a portion constituting the inner tube is a compound containing 93.5 to 97.5% by weight of synthetic resin, 2 to 6% by weight of silicon and 0.5 to 1% by weight of TiO ₂ and a very small amount of a dispersing agent. And is formed by coating by any one of the methods.

In the present invention, a silicone-coated portion formed by mixing silicone or the like with a synthetic resin is coated on an inner surface of an inner surface tube formed by extrusion with an inner diameter of a protruding portion and a groove portion formed continuously or by extrusion or spraying so as to have a predetermined thickness It is possible to improve the water flow capacity by reducing the coefficient of friction at the time of supplying water and improve the strength through the white silicon covering part and to easily photograph the defectiveness of the inner diameter utilizing the CCTV.

The present invention relates to a compound containing 93.5 to 97.5% by weight of a synthetic resin, 2 to 6% by weight of silicon, 0.5 to 1% by weight of TiO ₂ (white pigment) and a small amount of a dispersing agent, Coating or the like to form an inner surface tube or a silicon-covered portion, thereby reducing the coefficient of friction and greatly improving the water supply capability.

The present invention improves the safety by enhancing the external pressure strength of the synthetic resin pipe and reinforcing the strength by forming the inner surface tube thicker through the silicon covering part made of silicon or the like.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view showing a preferred embodiment of the present invention. Fig.
2 is a cross-sectional view of an assembly state using a connector according to the present invention
Fig. 3 is an enlarged cross-sectional view
FIG. 4 is an enlarged cross-sectional view of the inner surface tube of the present invention in a state in which a silicon-
5 is a cross-sectional view of a double-walled sewer pipe without a connector according to the present invention
Fig. 6 is an enlarged cross-sectional view of the present invention in a state in which the silicon-
7 is a front view of a molding process for a double-wall sewage pipe of the present invention
8 is a plan view of a molding process for a double-wall sewage pipe of the present invention
9 is a block diagram illustrating a preferred embodiment of the present invention.
10 is a block diagram illustrating another embodiment of the present invention.

FIG. 1 is an exploded perspective view showing a preferred embodiment of the present invention, FIG. 2 is an assembled state sectional view using the connector of the present invention, FIG. 3 is an enlarged cross- Fig. 3 is an enlarged cross-sectional view of the main part in a state in which the covering part is covered.

The protruding portions 11 and 11a and the groove portions 12 and 12a are continuously formed through a normal mold and the inner circumferential tube 13 is extruded into the inner diameters of the protruding portions 11 and 11a and the groove portions 12 and 12a And smoothly molding.

A connecting port 20 integrally connected at an end of the protruding portion 11 and having a connection space 22 and a protruding portion 21 formed at an end of the protruding portion 11 is integrally formed to mold the DC double wall sewage pipes 10, will be

The connecting port 20 is connected to the groove 12 of the DC double wall sewage pipes 10 and 10a so as to integrally and integrally formed with the connecting pipe 20. The DC double wall sewage pipe 10a inserted into the connecting pipe 20 is packed with the groove 12a, (26) is inserted to reinforce the connection coating portion (23) by winding the connection coating portion (23) between the connection ports (20).

The connection coating portion 23 is formed in a thin tape shape and is preferably formed of a synthetic resin (PE, PP, PVC), a metal material (AL, etc.), a fiber glass, etc., .

And the silicon covering portion 14 is formed on the inner diameter of the inner tube 13 or the inner tube 13.

The inner surface tube 13 or the silicon covering portion 14 is coated with a thickness of 1.5 to 5 mm by an extrusion or spray method to reduce the coefficient of friction to improve the water permeability.

FIG. 5 is a cross-sectional view of a double-wall sewage pipe without a connector according to the present invention, and FIG. 6 is an enlarged cross-sectional view of a substantial part in a state in which a silicon-

The DC double wall sewage pipe 10 is formed by extruding the inner tubular pipe 13 with an inner diameter formed by the protruding portion 11 and the groove portion 12 formed continuously so that the inner tubular pipe 13 and the groove portion 12 are integrally connected .

The silicone covering portion 14 formed by extrusion or coating on the inner diameter of the inner or outer tube 13 or 13 is coated with a thickness of 1.5 to 5 mm by an extrusion or spraying method to reduce the coefficient of friction, .

The silicone covering portion 14 is extruded or sprayed on the inner diameter of the inner or outer tube 13 or 13 of the DC double wall sewage pipes 10 and 10a shown in FIGS. 1 to 5 to a thickness of 1.5 to 5 mm To reduce the coefficient of friction, thereby improving the water-permeability.

If the inner surface 13 or the silicon covering portion 14 is coated to a thickness of 1.5 mm or less, the coefficient of friction is not reduced and the water-carrying ability can not be improved. If the coating is coated at 5 mm or more, the effect of reducing the friction coefficient is not improved The thickness is preferably 3 mm, because the cost only increases.

The inner surface tube 13 or the silicon covering portion 14 is a compound containing 93.5 to 97.5% by weight of synthetic resin, 2 to 6% by weight of silicon and 0.5 to 1% by weight of TiO ₂ and a small amount of a dispersing agent, Or a spray method so as to reduce the coefficient of friction, thereby greatly improving the water supply capability.

0.5 to 1% by weight of the TiO ₂ is formed by coating either one of white and yellow pigments on the inner surface by extrusion or spraying using either white or yellow.

FIG. 7 is a front view of a molding process for a double-wall sewage pipe of the present invention, and FIG. 8 is a plan view of a molding process for a double-wall sewage pipe of the present invention.

A mold unit 51 connected to an extruder 50 for supplying a raw material and extruding and supplying the raw material in a molten state and molding a DC double wall sewage pipe 10 and 10a while a plurality of molds are connected to each other in a predetermined locus, A cutting device 53 for cutting the sewage pipes 10 and 10a to a predetermined length;

And a discharge device 54 installed at one side of the cutting device 53 for discharging the molded double-walled sewage pipes 10, 10a, which have been molded, to the outside.

In the case of coating the silicone covering portion 14 with the inner diameter of the inner tube 13 by the extrusion or spraying method without forming the inner tube 13 and the silicon covering portion 14 integrally with the mold apparatus 51 It is possible to use a separate extruder or spray connected thereto.

In the present invention having such a configuration, various synthetic resin raw materials (PE, PP, PVC, etc.) to be supplied to the extruder 50 are supplied in a molten state and supplied to the tubular mold of the mold apparatus 51, And the grooves 12 and 12a are molded.

The synthetic resin raw material is molded to have a predetermined thickness along the shape of the inside by the air supplied into the mold apparatus 51 or the suction force sucked from the outside.

The protruding portions 11 and 11a and the groove portions 12 and 12a are formed continuously through the rotation of the mold apparatus 51 and the connecting hole 20 is formed at the front end if necessary.

The DC double wall sewage pipes 10 and 10a are formed through the mold unit 51 and the connecting holes 20 are continuously formed at the end portions formed along the protrusions 11 and 11a, In this case, they provide a connected state.

Said projection (11, 11a) and the groove (12, 12a) has an inner diameter within the landscape, so 13 is molded, 93.5~97.5% by weight of the synthetic resin within the scenery (13), silicon 2-6% by weight, TiO ₂ of 0.5 To 1% by weight of a compound containing a small amount of a dispersing agent to form a coating on the inner surface with an extrusion or spraying method so as to reduce the coefficient of friction, thereby greatly improving the water permeability.

When the inner tube 13 is normally formed, 93.5-97.5% by weight of synthetic resin, 2-6% by weight of silicon and 0.5-1% by weight of TiO ₂ and a small amount of dispersant are mixed with the inside diameter of the inner tube 13 And coating the silicone covering portion 14 with an extrusion or spraying method so as to have a color on the inner surface with a compound, thereby reducing the coefficient of friction and greatly improving the water supply capability.

The DC double wall sewage pipes 10 and 10a formed in this manner are connected to the grooves 12 and 12a at the ends of the DC double wall sewage pipe 10a when the pipes are buried in the ground, And the DC double wall sewer pipes 10 and 10a are connected to each other at the portions where the DC double wall sewer pipes 10 and 10a are butted to each other in the case where there is no connecting hole 20 in the connecting space 22 of the connecting hole 20.

Three specimens of 200 g were extruded and molded at a temperature of 190 캜 by 1 mm press molding. The specimens of the three specimens were molded into a specimen of Uk = (A) / W (Uk: friction coefficient, A: W: specimen weight).

Comparison of friction coefficient of sample Sample MI
g /
10 min Base Resin Coefficient of friction measurement tablet
Coefficient of friction copper
Coefficient of friction Melting temperature
() Crystallization temperature
() For melting heat
Amount
(J / g) Bottom surface Top Specimen weight
(g), W tablet
friction
A copper
friction
A CB-1 7.3 132 117 194 CB-1-A CB-1-B 200 7.4 4.0 0.37 0.20 For polyethylene injection CB-1-C 0.36 CB-2 7.98 132 117 191 CB2-A CB-2-B 5.9 0.30 For polyethylene injection CB2-C 5.4 2.0 0.27 0.10 CB-3 0.1 129 115 175 CB3-A CB-3-B 7.8 3.5 0.39 0.18 For extrusion of polyethylene
Density relative to CB-1,2
Slightly low CB3-C 5.8 3.0 0.29 0.15

As can be seen from the above results, it was confirmed that the coefficient of friction was as low as 0.27 to 0.39, which means that the water-feeding ability was greatly improved.

The inner surface tube 13 and the silicon covering portion 14 are coated with a larger thickness of the inner diameter of the projecting portion 11 and the groove portion 12 and the inner diameter of the inner tube 13 to improve the load externally applied to the tire Thereby improving the strength.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the block diagrams shown in FIGS. 9 and 10. FIG.

end. In the extrusion step (S1)

Melting a synthetic resin made of any one of PE (polyethylene), PP (polypropylene), and PVC and extruding it in an extruder 50; The inner surface of the inner tube 13 is composed of 96 wt% of synthetic resin, 3 wt% of silicon and 1 wt% of TiO ₂ .

I. The projecting portion and the groove forming step (S2)

The synthetic resin extruded from the extruder 50 is formed continuously with the protruding portion 11 and the groove portion 12 by the suction force sucked from the air supplied from the mold apparatus 51 or from the outside, 13 so that the smooth DC double-walled sewage pipe 10 is formed.

All. The cooling step (S3)

When the inner tube 13 is smoothly formed by the inner diameter of the mold apparatus 51 in which the protrusion 11 and the groove 12 are continuously formed and supplied to the cooling device 52, Is maintained as it is.

la. In cutting step S4,

The cooled DC double-walled sewage pipe 10 is cut into a length of 6 m and supplied.

hemp. In the discharging step S5,

6 m long to discharge the DC double wall sewage pipe 10, which has been formed, to the outside.

end. In the extrusion step (S1)

A synthetic resin made of any one of PE (polyethylene), PP (polypropylene) and PVC is melted and extruded in the extruder 50.

I. The projecting portion and the groove forming step (S2)

The synthetic resin extruded from the extruder 50 is formed continuously with the protruding portion 11 and the groove portion 12 by the suction force sucked from the air supplied from the mold apparatus 51 or from the outside, 13 so that the smooth DC double-walled sewage pipe 10 is formed.

All. Silicon Coating Step (S6)

A compound of 96 wt% of synthetic resin, 3 wt% of silicon and 1 wt% of TiO ₂ as an inner diameter of a smooth inner surface tube 13 of the double wall sewage pipe 10, The abdominal region 14 is extruded and supplied.

la. The cooling step (S3)

The DC double wall sewage pipe 10 in which the protruding portion 11 and the groove portion 12 are continuously formed in the mold apparatus 51 and the silicone covering portion 14 is smoothly formed on the inner diameter of the inner diameter pipe 13 is cooled by the cooling device 52 ), It is cooled by a cooling method using water and supplied so that the molding state is maintained.

hemp. In cutting step S4,

The cooled DC double-walled sewage pipe 10 is cut into a length of 6 m and supplied.

bar. In the discharging step S5,

6 m long to discharge the DC double wall sewage pipe 10, which has been formed, to the outside.

The double wall sewage pipe for decreasing the friction coefficient of the present invention has a silicone coating portion coated with a predetermined thickness on the inner diameter of the inner diameter pipe or the inner diameter of the inner diameter pipe to reduce the coefficient of friction caused by the flow of the fluid, And to provide a very useful invention for improving the strength through the silicon covering portion.

10, 10a: DC double wall sewage pipe 11, 11a:
12, 12a: groove portion 13, 13a: inner appearance
14: silicon covering portion 20:
21: opening portion 22: connection space
25: reinforcing projection 26: packing
50: extruder 51: mold apparatus
52: Cooling device 53: Cutting device
54: Discharging device

Claims (3)

An extrusion step (S1) of melting a synthetic resin made of PVC and extruding it in an extruder (50); The synthetic resin extruded from the extruder 50 is formed continuously with the protruding portion 11 and the groove portion 12 by the suction force sucked from the air supplied from the mold apparatus 51 or from the outside, (13) forming protrusions and grooves forming a smooth double wall sewage pipe (10); When the inner tube 13 is smoothly formed by the inner diameter of the mold apparatus 51 in which the protrusion 11 and the groove 12 are continuously formed and supplied to the cooling device 52, A cooling step S3 for supplying the cooling water to be maintained as it is; A cutting step S4 of cutting the cooled DC double-walled sewage pipe 10 to a length of 6 m and supplying the same; And a discharging step (S5) of discharging the DC double wall sewage pipe (10), which has been cut to a length of 6 m and completed molding, to the outside,
In the extrusion step S1, a part constituting the inner tube 13 is a compound containing 93.5 to 97.5% by weight of synthetic resin, 2 to 6% by weight of silicon and 0.5 to 1% by weight of TiO ₂ and a small amount of a dispersing agent, Wherein the coating is formed by coating by any one of extrusion and spraying methods.
An extrusion step (S1) of melting a synthetic resin made of PVC and extruding it in an extruder (50); The synthetic resin extruded from the extruder 50 is formed continuously with the protruding portion 11 and the groove portion 12 by the suction force sucked from the air supplied from the mold apparatus 51 or from the outside, (13) forming protrusions and grooves forming a smooth double wall sewage pipe (10); When the inner tube 13 is smoothly formed by the inner diameter of the mold apparatus 51 in which the protrusion 11 and the groove 12 are continuously formed and supplied to the cooling device 52, A cooling step S3 for supplying the cooling water to be maintained as it is; A cutting step S4 of cutting the cooled DC double-walled sewage pipe 10 to a length of 6 m and supplying the same; And a discharging step (S5) of discharging the DC double wall sewage pipe (10), which has been cut to a length of 6 m and completed molding, to the outside,
After the extrusion step (S1) is performed, the inner surface of the inner tube (13) is coated with a thickness of 1.5 to 4 mm to form a silicone covering part (14) improving the water permeability by reducing the friction coefficient.
The silicon covering part 14 is a compound containing 93.5 to 97.5% by weight of a synthetic resin, 2 to 6% by weight of silicon and 0.5 to 1% by weight of TiO ₂ and a small amount of a dispersing agent, (S6): a coating step (S6) of coating a silicone coating layer by a method of coating a silicon coating layer on the inner surface of the silicon wafers.
3. The method of claim 2,
Wherein 0.51% by weight of TiO ₂ of the silicon covering portion (14) is coated with a color using either one of white and yellow pigments, thereby reducing the coefficient of friction and reinforcing the inner diameter of the double wall sewer pipe.

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