KR200211173Y1 - Plastic pipe of triple layers using plastic salvage - Google Patents

Abstract

The present invention forms an intermediate-layer pipe structure by regenerating waste plastic wave support material, and by recycling and bonding plastic raw materials to the inner and outer surfaces of the non-recycled material, it is possible to recycle resources and protect the environment by using recycled plastics. In addition, the pressure resistance and the airtightness of the inner and outer surfaces are increased, and furthermore, only the inner and outer skins are provided using a novel plastic raw material to provide an excellent three-layered plastic fume pipe with a beautiful appearance.

The plastic fume tube is a multi-layered plastic fume tube in which a thermoplastic waste plastic wave support material is melted and extruded to spirally wound and form a pipe. Extruded to the outer surface side of the rotary roller 31 of 30) and pushed outward from the outer surface of the rotary roller 31 to form an inner layer (inner shell) 2 in a spiral tubular shape, and collected waste plastic wave support material (PE) , Nylon, PP, and the like) are sorted and introduced into the raw material inlet 12a, and the waste plastic gripper 10c, which is fed from the primary crushing melting machine 10c having a double screw portion 14c and a boiler portion (heating burner portion) 14d, is disposed. While the raw materials are crushed, the mixture is heated and mixed at a temperature of about 300 ° C. for 3 to 7 minutes, and the heated and mixed waste plastic wave support material is a secondary having a twin screw portion 14b and a boiler portion (heating burner portion) 14d. By crushing melting machine 10b Simultaneously crushing and heating continued to a temperature of about 300 ℃, and was heated by the tertiary melter (10a) to maintain the waste plastic shredding material transferred from the secondary crushing melter (10b) at a temperature around 250 ℃ In the tertiary melter (10a), the waste plastic wave support material is distributed to the intermediate layer extruder (10) via a predetermined thickness and width while cooling the feed amount controlled by the pair of extrusion rollers (19). The intermediate layer 3 is formed in a spiral tubular shape by the rotation of the rotary roller 31 by extruding onto the inner layer (inner shell) 2 by the cooling means installed in the tensioner 30 while cooling. An outer layer (outer shell) 4 is formed in a spiral tubular shape by extruding the molten plastic by the outer layer extruder 20 to the outer surface of the intermediate layer 3 and cooling the surface thereof.

Description

PLASTIC PIPE OF TRIPLE LAYERS USING PLASTIC SALVAGE}

The present invention relates to a three-layer plastic fume pipe using waste plastic, and more particularly, to recycle waste plastic wave support material to form an intermediate layer pipe structure, and to recycle and recycle the plastic raw material by extruding and bonding the plastic raw material to the inner and outer surfaces thereof. It is possible to recycle resources and protect the environment by using it, and its simple structure increases pressure-resistance and airtightness of the inside and outside surfaces. It is about.

Conventionally, it is widely known to manufacture multilayered multilayer tubes made of thermoplastic plastics having spiral wound layers in general, and each layer is wound to overlap each other, and it is also known to wind small tubes of various structures to form large tubes. . Further, a method is also known in which the hollow chamber shapes, each of which are linear, are separately installed between two spirally wound flat layers without forming such a laminated tube completely. As described above, various types of structures have been developed for the plastic fume tube having a multilayer structure, and a manufacturing method and a manufacturing apparatus thereof have also been developed.

As an example, the pressure-resistant synthetic resin tube disclosed in Patent Application Publication No. 99-001314 is formed in the shape of a spiral convex convex wave, and a metal reinforcing band plate is embedded in the thickness of the synthetic resin tube wall to improve the internal pressure. The metal reinforcing band plate is superimposed or formed into a special structure, but the reinforcement is made over the entire wall of the pipe, but due to such a reinforcement structure, there is a problem that it becomes expensive and complicated to manufacture.

In addition, the method of manufacturing a multilayer tube disclosed in Korean Patent Application Laid-Open No. 99-032911 is intended to solve the drawback that the outer surface of a laminated tube having a substantially circular prowheel is not smooth and expands unstable. After the shape safety of the pro-wheel is achieved, the inner and side surfaces are welded together so that adjacent sides are fused to each other. Since the small pipe of the structure must be formed, there is a problem that the process becomes complicated and the unit price increases.

Therefore, the present invention has been researched and developed in order to solve the above-mentioned problems. The recycled plastic wave support material is recycled to form an intermediate layer pipe structure, and the recycled plastic is formed by extruding and bonding the plastic raw material to the inner and outer surfaces thereof. It is possible to recycle resources and protect the environment by using it, and its simple structure increases pressure-resistance and airtightness of the inside and outside surfaces. The purpose is to provide.

Figure 1 is a longitudinal partial cross-sectional view showing the structure of a two-layered plastic fume pipe using waste plastic produced in the present invention,

Figure 2 is a process diagram showing an embodiment of a method for producing a plastic fume tube of a two-layer structure using waste plastic by the device of the present invention,

Figure 3 is a block diagram showing an embodiment of an apparatus for manufacturing a plastic fume pipe of a two-layer structure using waste plastic according to an embodiment of the present invention,

Figure 4 is a schematic diagram showing an embodiment of a third melter of the endothelial extrusion device for extruding the endothelial by supplying waste plastic in Figure 3,

Figure 5 is a schematic configuration diagram showing an embodiment of an envelope extrusion apparatus for extruding the envelope by supplying waste plastic in Figure 3,

6 is a partially enlarged cross-sectional view showing a double screw portion for heating, conveying and pulverizing primary and secondary crushing melters of the endothelial extruding apparatus of FIG.

7 is a front view showing the external structure of the distribution box of FIG.

8 is a plan view illustrating an internal configuration of a distribution box.

Explanation of symbols on the main parts of the drawings

1: plastic fume pipe (this design) 2: inner layer (inner shell)

3: middle layer 4: outer layer (outer shell)

10: middle layer extruder 10a: third melter

10b: second shredder 10c: first shredder

14a, 14b, 14c: Double screw part 14d: Boiler part (heating burner part)

14e, 16b: Electric heater 14 ': Cylinder

16: inlet 17: inlet

18: dispenser 19: extrusion roller

20: shell extruder 30: tensioner

31: rotary roller

In order to achieve the above object, according to an embodiment of the present invention, a three-layer plastic fume tube using waste plastic, a plastic fume tube of a multi-layer structure to form a spiral, winding, pipe by melting and extruding thermoplastic waste plastic wave support material In the extruder, the molten plastic is extruded to the outer surface side of the rotary roller of the tensioner with a constant thickness and width, and pushed outward from the outer surface of the rotary roller to form an inner layer (inner shell) in a spiral tubular shape. Selected waste plastic wave support materials (PE, nylon, PP, etc.) are selected and put into the raw material inlet, and the waste plastic wave support material input from the primary crushing melting machine having twin screw portion and boiler portion (heating burner portion) is crushed. The mixture is heated and mixed for 3 to 7 minutes at a temperature before and after the ℃, and the heated and mixed waste plastic wave support material is mixed with a double screw part and a boiler part (heating The secondary crushing melter with the nut part is further crushed and continuously heated to a temperature of about 300 ° C., and the waste plastic shredding material transferred from the secondary crushing melter is maintained at around 250 ° C. in the third melter. By the intermediate layer extruder through the intermediate layer extruder while cooling the waste plastic wave support material in the tertiary melter to cool the feed volume controlled by a pair of extrusion rollers. The intermediate layer is formed in a spiral tubular shape by the rotation of the rotating roller, and the molten plastic is extruded by the outer layer extruder to the outer surface of the intermediate layer while cooling by the cooling means installed in the tensioner, and the surface is cooled to form the spiral layer. An outer layer (outer shell) is formed in a tubular shape.

In this case, the tertiary melter of the intermediate layer extruder includes a pair of screw pairs of screw, a cylinder surrounding the pair of screw portions, and a boiler portion (heating burner portion) for heating the cylinder. The remaining mass is transported and heated while further crushing, and the input pipe of the third melter is heated and transported to maintain the melt waste plastic support material flowing by the electric heater at 250 degrees. It is preferable that the thickness of the middle layer of the three-layer plastic fume pipe using waste plastic can be adjusted by including a control handle for adjusting the thickness by adjusting the thickness.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a structure of a three-layer plastic fume tube using waste plastic according to an embodiment of the present invention in a longitudinal cross-sectional view, Figure 2 is an example of a method of manufacturing a three-layer plastic fume tube using the waste plastic as a process diagram 3 to 8, a manufacturing apparatus thereof is shown.

In Fig. 1, the three-layer plastic fume pipe 1 using the waste plastic is composed of an inner layer (inner shell) 2, an intermediate layer 3 and an outer layer (outer shell) 4, and the inner layer 2 is made of plastic. The raw material is melted and extruded to be wound spirally, and the intermediate layer 3 is melted and extruded into a spiral plastic waste support material on the spiral, and then the outer layer 4 is melted and extruded again to spirally. It is formed by winding.

In this way, the three-layer plastic fume pipe using waste plastic has an inner layer (2), an intermediate layer (3) and an outer layer (4) wound in spirals to form a pipe, and the intermediate layer (3) is formed thick with waste plastic wave support material. In addition, the inner layer 2 and the outer layer 4 are thinly formed of a new plastic raw material, so that the intermediate layer 3 has sufficient strength, and the inner and outer layers 2 and 4 have a beautiful appearance without impurities. It can be used, and it is possible to reduce the raw materials with the recycling of resources.

The manufacturing method of the three-layered plastic fume pipe (1) using such waste plastic is described with reference to the manufacturing method of the intermediate layer (3) in Figure 2, the inner layer (2) and the outer layer (4) is mainly a conventional method Since the detailed description thereof is omitted.

First, the manufacturing method of the intermediate layer 3 of the three-layer plastic fume pipe using waste plastic is the waste plastic is melted through a sorting and feeding step, a first crushing melting step, a second crushing melting step and a third (crushing) melting step. It can be extruded as a state.

Before the extrusion of the waste plastic in Figures 2 and 3, first the inner layer extrusion step according to the conventional technique is carried out, in this case, as shown in Figure 3, the plastic melted by the shell extruder 20 with a constant thickness A spiral tubular inner layer (inner shell) 2 is formed by extruding toward the outer surface side of the rotary roller 31 of the tensioner 30 and pushing outward from the outer surface of the rotary roller 31. At this time, by cooling only the inner surface of the rotary roller 31, the inner layer 2 can be formed in a stable spiral tube, the outer surface is not cooled.

In this way, while forming the inner layer 2 while the outer surface of the inner layer 2 is not solidified, the waste melted as described above on the surface of the inner layer 2 as soon as possible after the inner layer 2 is spirally wound as much as possible. The plastic is extruded to wind the intermediate layer 3. When the winding of the intermediate layer 3 starts, the inner surface of the intermediate layer 3 is cooled by the cooling from the inner surface of the inner layer 2, but the outer surface is not the same as the inner layer 2 but the outer layer is not cooled. (4) may be wound, and even if the outer surface of the intermediate layer 3 is cooled, since the desired strength is obtained by the intermediate layer 3, even if the outer layer 4 is not completely fused to the intermediate layer, three layers using waste plastic The manufacture of plastic fume pipes does not cause any major difficulties. However, in terms of productivity, the outer surface of the intermediate layer 3 is also preferably cooled to some extent. That is, it is preferable to cool the outer surface of the intermediate layer 3 to some extent because after the outer layer 4 is wound without cooling, it takes a long time for the outer layer 4 to be completely cooled and commercialized.

In this manner, immediately after the intermediate layer 3 is wound, the outer layer 4 is extruded from the molten plastic by the outer layer extruder 20, and the surface thereof is cooled, thereby producing a three-layer plastic fume tube 1 using waste plastic. Then, when completely cooled, it is cut into a predetermined length and commercialized.

In order to form the specific intermediate layer 3, the waste plastic wave support materials (PE, nylon, PP, etc.) collected as shown in FIGS. 3, 4 and 6 are sorted and introduced into the raw material inlet 12a in the sorting and feeding step. Transfer to the primary crushing melter (10a), in the primary crushing melting step, the waste plastic crushing support material injected from the primary crushing melter (10c), while being crushed by the twin screw portion (14c) boiler portion (heating burner Sub) 14d is heated and mixed at a temperature of about 300 ° C for 3 to 7 minutes. The heat source of the boiler portion (heating burner portion) 14d can be heated by gas, oil or waste materials at the time of introduction (see Fig. 5).

In the second crushing melting step, the heated and mixed waste plastic crushing support material is transferred to the secondary crushing melter 10b and crushed by the twin screw portion 14b, and at the same time, the boiler portion (heating burner portion) 14d is removed. Heating is continued at a temperature of about 300 ° C., and then, in the third melting step, the molten waste plastic support material conveyed from the third melter 10a is heated in a third manner and distributed while maintaining the temperature around 250 ° C. Transfer to (18). In the third melting step, the waste plastic wave support material conveyed as shown in FIGS. 3 and 4 is passed through the twin screw portion 14a to melt and crush the remaining mass at the same time as the primary to third. In the primary crushing melting step, the heat source includes a boiler part (heating burner part) 14d for burning gas, oil or waste materials in the input, and the double screw part 14c in the first and second crushing melting steps. It is preferable that the cylinder external temperature, which is the screw body of (14b), is maintained at about 400 ° C., and the cylinder external temperature is maintained at about 300 ° C. in the third crushing melting step.

In the waste plastic extruding step, the molten waste plastic wave support material transferred to the dispensing box 18 is wound on the inner layer 2 wound on the tensioner 30 while cooling with a supply amount controlled by a pair of rollers in the dispensing box 18. Extruded to the outer surface of).

In this way, in the tensioner 30, the inner layer 2 made of plastic raw material and the intermediate layer 3 wound using the waste plastic form a spiral structure according to the rotation of the rotary roller 31 of the tensioner 30. While the pipe is molded and cooled, it is pushed out of the tensioner 30.

The outer layer 4 is formed by extruding the molten plastic raw material on the outer surface of the intermediate layer 3 of the spiral pipe structure which is first cooled and pushed out on the tensioner 30 using the shell extruder 20. This process can be applied to the prior art as it is, the pressing roller may be additionally employed so that the inner layer 2 and the outer layer 4 is pressed more strongly on the inner and outer surfaces of the intermediate layer (3).

Subsequently, the plastic fume tube 1 coated with the outer layer 4 is cooled to room temperature to maintain a desired shape, and the plastic fume tube having a multilayered structure is completed by cutting to a normalized length.

In FIG. 3, the tensioner 30 is cooled by cooling means while forming the molten waste plastic wave support material extruded from the endothelial extruder 10 into a spiral tubular shape by the rotation of the rotary roller 31, and the rotary roller. It is configured to push out the tube wound outward from the outer surface of 31 (may be by a plurality of rollers as known).

The shell extruder 20 is configured to extrude the molten plastic to form the shell 3 on the outer surface of the tubular endothelium 2 while being formed into a spiral tubular shape and cooling. For example, a raw material inlet 22 for injecting a plastic raw material (PE, nylon, PP, etc.) is formed in FIG. 5, and is heated and maintained at about 300 ° C. to melt the plastic raw material that has been injected in a conventional manner. It consists of a primary melter 24 and the secondary melter 26 is heated and maintained in a 250 ℃ electric arc, the end is attached to the extrusion die or guide.

The intermediate layer extruder 10 includes a primary crushing melter 10c, a secondary crushing melter 10b, a tertiary melter 10a and a distribution box 18, and the primary crushing melter 10c, as shown in detail in Figure 6, has a raw material inlet 12c for selecting and inputting the collected waste plastic wave support material (PE, nylon, PP, etc.), and put the waste plastic wave support material It has a twin screw part 14c and a boiler part (heating burner part) 14d so that it may heat and mix for 3 to 7 minutes at the temperature before and behind 300 degreeC.

In addition, the secondary crushing melter (10b) also has an inlet (12b) for injecting the heated, mixed waste plastic wave support material conveyed from the primary crushing melter (10c), as shown in Figure 6, once again 300 It has a twinscrew part 14b and a boiler part (heating burner part) 14d so that it may be crushed while continuously heating to a temperature of about 占 폚.

The tertiary melter 10a is configured to hold the waste plastic wave support material conveyed from the secondary crushing melter 10b at a temperature of around 250 ° C. and to be transferred to the distribution box 18. In the tertiary melting step of the tertiary melter 10a, most of the crushing is performed in the first and second stages, so that no further crushing is necessary. In FIG. 4, the twin screw portion 14a is employed to crush the remaining mass. It is possible to maintain the melting temperature.

The distribution box 18 has an inlet 17 for introducing the waste plastic wave support material supplied from the tertiary melter 10a via the inlet tube 16, and is shown in detail in FIGS. 7 and 8. As shown, it comprises a dispensing box 18 for extruding into the tensioner 30 at a constant thickness and width while cooling with a feed amount controlled by a pair of extrusion rollers 19.

4 and 6, the pair of screw portions 14a, 14b and 14c of the screw are surrounded by the cylinder 14 ', and the outer circumference of the cylinder 14' is the boiler portion (heating burner portion) ( 14d). In this way, the waste plastic phages put into the primary and secondary are conveyed and heated while being crushed, and the same method can be employed in the tertiary, and then the melt flowing through the electric heaters 14e and 16b. The waste plastic wave support fee can be introduced into the distribution box 18 while maintaining the 250 degree. As shown in FIG. 7 and FIG. 8, the distribution box 18 may include an adjusting handle 19a for adjusting the thickness of the pair of extrusion rollers 19 to adjust the thickness. In addition, a guide that can be adjusted in width so as to contact the pair of extrusion roller 19 to adjust the extrusion width is installed, or including a control means of the motor for adjusting the rotational speed of the pair of extrusion roller 19 It may be configured.

The three-layer plastic fume pipe using waste plastic of the present invention manufactured by the manufacturing method and apparatus as described above has amazing external pressure strength, and has beautiful inside and outside surfaces and excellent airtightness. Compared with multi-layered spiral tubes using recycled waste plastic raw materials, it is particularly strong in external pressure strength and wear resistance and is suitable as a substitute for concrete fume pipes. In other words, the pipe price is very cheap compared to the existing piping materials such as drain pipe, waste water pipe, sewage pipe, and the like, it is very economical in terms of transportation cost, construction cost, and durability maintenance cost. It is possible.

In addition, as described above, the plastic fume tube having a three-layer structure, and a method and apparatus for manufacturing the three-layer structure, which are manufactured completely using only the waste plastic wave support material as described above, have been shown and described, but the intermediate layer (3) is up to 20 to 30 wt.%. Even if it is formed of a recycled plastic to a plastic raw material of the three-layer plastic fume pipe (1) using waste plastic may be produced without significantly lowering in terms of strength.

As described above, according to the configuration and operation of the three-layer plastic fume tube using waste plastic according to an embodiment of the present invention, it is possible to manufacture a plastic fume tube of a multi-layer structure of cheap and excellent quality using waste plastic wave support material. As a result, it is possible to recycle resources and protect the environment, and to secure complete confidentiality of the inside and outside surfaces.

Claims (2)

In the multi-layered plastic fume pipe, which melts and extrudes thermoplastic waste plastic support material and spirally winds and forms a pipe: The plastic melted by the shell extruder 20 is extruded to the outer surface side of the rotary roller 31 of the tensioner 30 at a constant thickness and width, and pushed outward from the outer surface of the rotary roller 31 to form an inner layer in a spiral tubular shape. (Inner shell) (2) is formed, the collected waste plastic wave support material (PE, nylon, PP, etc.) is sorted and introduced into the raw material inlet (12a), twin screw portion 14c and boiler (heating burner) While mixing the waste plastic shredding material introduced from the primary shredding melter 10c with 14d) by heating it at a temperature of about 300 ° C for 3 to 7 minutes, and mixing the heated and mixed waste plastic shredding material with a double screw. The secondary crushing melter 10b having the portion 14b and the boiler portion (heating burner portion) 14d is further crushed and continuously heated to a temperature of about 300 ° C., and the secondary crushing melter 10b Waste plastic wave feed material transferred from It is heated by the lock tertiary melter 10a, and the waste plastic wave support material is distributed in a constant thickness and width in the tertiary melter 10a while cooling the feed amount controlled by a pair of extrusion rollers 19. The intermediate layer 3 is formed in a spiral tubular shape by the rotation of the rotary roller 31 by extruding onto the inner layer (inner shell) 2 by the intermediate layer extruder 10 through the intermediate layer extruder 10, and the tensioner 30. 4) The molten plastic is extruded by the outer layer extruder 20 to the outer surface of the intermediate layer 3 while being cooled by cooling means installed inside the shell), and the surface is cooled to form an outer layer (outer shell) 4 in a spiral tubular shape. Three-layer plastic fume pipe using waste plastic, characterized in that formed. 3. The tertiary melter (10a) of the intermediate layer extruder (10) is a pair of screwed twin screw portions (14a) and a cylinder (14 ') surrounding the twin screw portions (14a) and the By including the boiler portion (heating burner portion) 14d for heating the cylinder 14 ', the remaining mass of the injected waste plastic wave support material is further transported and heated while further grinding, and the input pipe of the tertiary melter 10a In 16), the molten waste plastic wave support material flowing by the electric heaters 14e and 16b is heated and maintained to maintain 250 degrees, and the distribution box 18 adjusts the thickness of the pair of extrusion rollers 19 to adjust the thickness. Three-layer plastic fume pipe using waste plastic, characterized in that it comprises a control handle (19a) for adjusting.