KR101488150B1 - Manufacturing method and device of recycling resin chip by using waste scrap - Google Patents

Abstract

The present invention relates to a method and a device for producing a recycled resin chip using a waste scrap including a polyester fiber and mixed with different materials having different properties. In particular, even when the waste scrap is mixed with polyester, the same can be added through an extruder without a separate drying process. A step of sorting and separating the different materials by cutting, pulverizing, and extruding the waste scrap and a step of recycling the sorted and separated materials by making the same into chips can be continuously performed. The method of the present invention comprises a step of collecting a waste scrap including a polyester fiber and mixed with different materials having different properties; a cutting step of cutting the collected waste scrap into an appropriate size using a cutting device; a pulverizing step of adding, drying, and pulverizing the cut waste scrap in a pulverizing device; a transferring step of transferring the pulverized waste scrap to an extruder through a transferring hole consisting of a transferring screw; an extruding step of heating the waste scrap transferred to the extruder, heating the same to a melting temperature of the polyester fiber, and dissolving the polyester and different materials to be forcibly transferred to a sorting and separating device; and a sorting and separating step of passing a polyester dissolved solution through a mesh screen consisting of a sorting and separating device, extruding the same through a nozzle to be extruded, cooled, and cut, and making the same into chips, wherein the different materials have viscosity maintained to be sticky even when smelted compared to polyester, so that the same remain to not pass through the mesh screen and are periodically collected and treated.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for manufacturing a recycled resin chip using waste scrap,

The present invention relates to a method for manufacturing a recycled resin chip using a waste scrap mixed with a heterogeneous material having different physical properties and containing polyester fibers, and more particularly, The process of separating and separating the different materials through the cutting, crushing and extrusion processes of the waste scrap, and chipping and sorting the sorted and separated materials so as to be recycled can be carried out through a continuous process .

Background of the Invention [0002] Interior materials such as sheets and carpets which are generally used as automobile interior materials are widely used as interior materials made of a mixture of polypropylene (PP) and polyethylene (PE) The interior material must be cut to fit the size and shape of the automobile in order to attach it to the interior of the vehicle, and a large amount of scrap is generated during the cutting process.

Since scrap is mixed with different materials having different physical properties together with polyester, it is difficult to separate and recycle them, and most of them are classified as industrial wastes and incinerated. There was a problem of causing air pollution and various environmental pollution such as soil pollution caused by burial residues.

These problems are not only problems that occur only in automobile interior materials but also all non-woven fabrics containing polyesters, papers, sheets, etc., which are serious problems, and as a means of solving the seriousness of the problem, Methods are provided.

Patent Document No. 10-0441835 entitled " Method of Manufacturing Recycled Chip Using Waste Fiber Yarn "(Patent Document 1) and Patent No. 10-0916727 entitled " Waste Scrap Recycling Method and Apparatus" (Patent Document 2), and Japanese Patent No. 10-1313351 "Method for manufacturing recycled fiber using waste scrap" (Patent Document 3).

Considering the contents of the patent document 1, the production line of the nonwoven fabric used as the tent, the fire hose, the agricultural hose or the interior material of the automobile made of polyester fiber yarn, and the defective product or scrapper And then primary cut with a hammer mill is firstly separated by a vibration filter net. The separated cotton filament yarn is taken up through a suction fan and transferred to a fiber yarn collecting chamber, The solid matter collected by the pulverizing process is collected by the suction fan, and then transferred to the fiber yarn collecting chamber, and the collected fiber yarn is collected by the extrusion process And is extruded from an extruder and then cut to form a recycled chip, which becomes a material for a plywood, a frame, and a wood-like material similar to a new material chip I would have.

Considering the technical contents of Patent Document 2, it is possible to selectively sort out impurities such as copper, PVC and synthetic rubber, which are high-priced recycled resources, from waste wires which are finely crushed in the first place through a separate crusher or a crusher, The recycling rate can be increased, and the economic benefit can be doubled.

In addition, considering the technical content of Patent Document 3, the step of collecting and crushing scrap from the automobile fiber interior material containing polyester fibers, the shredded scrap, and the terephthalic acid and the terephthalic acid with respect to 100 parts by weight of the scrap, 30 to 50 parts by weight of an ethylene glycol copolymer film is melt-molded at 10 to 300 DEG C to produce a pellet, and 50 to 150 parts by weight of the pellet and 50 to 150 parts by weight of a plastic resin are mixed And a method for producing regenerated fiber using waste scrap including a step of producing regenerated fiber.

In the case of the above-mentioned Patent Documents 1 to 3, the waste scrap is crushed in the case of the recycling of waste scrap or, in the case of Reference 1, the fiber scrap contained in the waste scrap, that is, the polyester scrap is recovered and then recycled. (PP), polyethylene (PE), or the like is contained in the nonwoven fabric, there is a disadvantage that the separation can not be performed.

In addition, Patent Document 2 is different from the object of the present invention in that copper and PVC are selectively separated from waste wire scrap in the case of Patent Document 2. In the case of Patent Document 3, when the waste scraps are mixed with different materials, There was a problem.

Patent No. 10-0441835 "Method for manufacturing recycled chip using waste fiber yarn" Patent No. 10-0916727 "Waste scrap regeneration method and apparatus" Japanese Patent No. 10-1313351 "Method for producing recycled fiber using waste scrap"

The present invention relates to a method for manufacturing a recycled resin chip using a waste scrap in which a heterogeneous material having different physical properties including polyester fibers is mixed to correct the various disadvantages of the related art, It is possible to effectively separate the different kinds of materials and to increase the utilization of the polyester having excellent physical properties.

As a means for achieving the above object, the present invention provides a method of manufacturing a waste scrap comprising the steps of collecting waste scrap mixed with heterogeneous materials having different physical properties including polyester fibers, and cutting the collected scrap to a proper size using a cutter A crushing step of finely crushing the scrapped waste scrap into a crusher, finely grinding the crushed scrap, a conveying step of conveying the pulverized scrap to a conveying device composed of conveying screws, and a waste step of conveying the scrap conveyed to the extruder The polyester melt fed by the extruder is passed through a mesh screen constituted by a separator, extruded through a nozzle, passed through a nozzle, passed through a nozzle, and heated to a temperature of the melting point of the polyester fiber to melt and melt the polyester and the dissimilar material, Cooled and cut into chips, and the dissimilar materials have sticky points unlike the polyester even in the molten state This is because it keeps the property of the screen, so it can not pass through the mesh screen and is made to be dry.

The present invention relates to a method of manufacturing a waste scrap, comprising the steps of collecting waste scrap mixed with heterogeneous materials having different physical properties including polyester fibers, cutting the collected scrap with an appropriate size using a cutter, The pulverized scrap is conveyed to an extruder through a conveying screw composed of a conveying screw and heated to a temperature not lower than the melting point of the polyester fiber to melt the polyester and the dissimilar material The polyester melt is extruded, cooled and cut into chips by passing through a mesh screen constituted by a screening separator, and the heterogeneous material maintains a sticky viscosity unlike the polyester even in a molten state It can not pass through the mesh screen and is allowed to be handled. Standing, not only the cost and waste of resources and environmental pollution due to the disposal of waste incineration scrap can be prevented, it will be effective, such as being able to scrap recycling of waste without the drying process.

Figure 1: Process diagram of the present invention
2: plan view of the device of the present invention
3: Side configuration of the inventive device
Fig. 4 is a plan view of the main part of the device of the present invention
Fig. 5 is a side view of the main part of the device of the present invention
Figure 6: Construction of connection between the crusher and the conveyor part of the inventive device
7: sectional view of the crusher used in the apparatus of the present invention
8 is a plan view of the delivery port used in the apparatus of the present invention;
Figure 9: Side view of the delivery port used in the device of the present invention
10: Diagram of the separator used in the apparatus of the present invention

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

FIG. 1 is a process diagram of a method for manufacturing a recycled resin chip using waste scrap to be provided in the present invention, and FIGS. 2 to 5 are schematic plan configuration diagrams of a manufacturing apparatus. The process includes a waste scrap collecting step S1, (Not shown) and a conveying conveyor (C), the apparatus comprising a step S2, a crushing step S3, a conveying step S4, an extruding step S5 and a sorting separation step S6, And a feeder 400 having a feed screw 410 is installed at one side of the mill 300. The feeder 400 is connected to the extrusion pipe 510 of the extruder 500, And a separator 600 having a nozzle and a mesh screen formed at the tip of the extruder 500 to selectively produce recycled polyester chips of polyester.

The waste scrap collection step (S1) is as follows.

The waste scrap collecting step S1 is not particularly limited, but in the present invention, it is preferable that the polyester fiber and the polyester scrap are different from each other in melting, that is, different kinds of such as polypropylene (PP), polyethylene (PE) Scrap mixed with material, waste nonwoven fabric, waste sheet, pasa (hereinafter referred to as "waste scrap").

In the case of the waste scraps, the melting point of the polyester is about 260 ° C, and it melts in a liquid phase which easily flows down at a temperature higher than the melting point. In the case of different materials, it is kept in the form of sticky viscous liquid do.

Therefore, by using the difference in melting state during melting of the recycled material, the polyester is passed through the mesh screen constituted by the nozzle, cooled, cut and chipped, and the heterogeneous material is caused to be collected on the mesh screen and then collected and recycled periodically .

The waste scrap used in the embodiment of the present invention was collected and used as waste scrap (A) of automotive interior material mixed with a different material of polyester fiber and polyethylene.

The cutting step S2 is as follows.

The cutting step S2 is a step of cutting the waste scrap A to an appropriate size according to the size of the collected waste scrap A by using a cutter (not shown) in order to allow the waste scrap A to be easily crushed in the crusher Cut to length of 30 ~ 100cm.

The pulverization step (S3) is as follows.

The pulverizing step S3 is a step of supplying pulverized scrap A cut to an appropriate size into a pulverizer 300 using a conveyor 310 and then finely finely pulverizing the pulverizer 300 using a rotary blade 320 and a fixed blade 330 The waste scrap (A) is completely dried by using heat generated in the pulverizing process while being pulverized, so that the waste scrap (A) in which the polyester is mixed can be omitted.

In the recycled resin chip manufacturing process using waste scrap, if it contains water, it can not be smoothly extruded, so it is usually subjected to a drying process.

The structure of the crusher 300 is configured as follows.

7, the driving motor M and the fixing body 341 are provided on the frame 340, the circular grinding cylinder 350 is provided on the fixing body 341, the circular grinding cylinder 250 is provided, A driven pulley 343 coupled to the lower end of the rotary shaft 342 and a motor M (not shown) coupled to the lower end of the rotary shaft 342. The hopper 360 is provided at the upper portion thereof with a hopper 360, Are connected by a belt 345. The drive pulley 344 of Fig.

The upper end of the rotary shaft 342 is positioned on the bottom of the circular grinding cylinder 350 and then the rotary disk 346 is coupled to the rotary disk 346. A plurality of rotary blades 320 are fixedly installed on the rotary disk 346, A plurality of fixed blades 351 are fixedly installed on the inner lower surface of the fixed blade 351 and a falling guide surface 352 is provided on the upper side of the fixed blade 351 in a spiral shape. 330 so that the waste scrap A that has been pulverized in the circular grinding cylinder 350 is supplied to the transfer port 400 through the discharge port 330.

6, a conveyor 310 is installed in the inlet 361 of the hopper 360 so that the waste scrap A cut at the cutter is introduced into the circular grinding cylinder 350 through the hopper 360.

The transfer port 400 constituting the transfer step S4 is connected to the lower discharge port 330 on one side of the circular grinding cylinder 350 of the pulverizer 300 as shown in FIG.

That is, a pair of feed screws 430 are installed on the inner surface of the feed pipe 410. The feed screw 430 is rotated by a motor M1 installed on one side of the feed pipe 410, The pulverized scrap A crushed in the circular grinding cylinder 350 of the pulverizer 300 is connected to the pulverizer 300 through the discharge port 330 through the inlet port 440 To be supplied into the transfer pipe 410.

4 and 5, the extruder 500 constituting the extrusion step S5 is provided with an extrusion screw 520 on the inner surface of the extrusion pipe 510. The extrusion screw 520 is connected to the motor M2 ).

The waste scrap A transferred through the transfer pipe 410 is connected to the coupling part 450 formed at the end of the transfer pipe 410 of the transfer port 400 to the connection part 511 at one side of the extrusion pipe 510, To be supplied into the pipe 510.

5, a plurality of electric heaters 530 may be installed on the outer surface of the extrusion pipe 510 so as to heat the inside of the extrusion pipe 510. At the distal end of the extrusion pipe 510, .

The sorting separator 600 constituting the separating step S6 is constituted as shown in FIG. 10, and the separator 600 is a device for replacing a mesh screen for an extruder using a hydraulic cylinder according to Japanese Patent No. 1372433 Although it is registered, it is explained as follows.

An inlet pipe 620 having an inlet hole 621 is formed at one side of the main body 610 constituting the sorting separator 600 and the inlet pipe 620 is connected to a fastener piece 512 formed at the tip of the extrusion pipe 510, So that the sorting separator 600 is fastened and fixed to the extreme end of the extrusion pipe 510 constituting the extruder 500.

A circular support 630 is coupled to the inner surface of the main body 610 and then is projected and withdrawn to the outside of the main body 610 by a hydraulic cylinder 650 formed on one side. A mesh screen 640 is provided on the outer surface of the circular support 630, An outflow pipe 660 having an outflow hole 661 is provided on the opposite side of the inflow pipe 620 and a nozzle 670 is provided on the end of the outflow pipe 660.

Reference numeral 700 denotes a cooling water tank, 800 denotes a cutter, and 900 denotes a raw material storage space.

The production of the recycled resin chip using the apparatus of the present invention thus constructed is carried out as follows.

That is, the waste scrap A mixed with the polyester fiber and the heterogeneous material (polyethylene) is collected through the waste scrap collecting step S1, and then the waste scrap A is collected by a cutter (not shown) The scrap A is cut to a size sufficient to crush the scrap A through a cutting step S2 in which the scrap is cut to a size of about 1 mm.

The scrapped scrap A is fed into the circular grinding cylinder 350 of the grinder 300 through the conveyor 310 and finely pulverized through the grinding step S3.

When the waste scrap A is introduced into the circular grinding cylinder 350 through the conveyor 310 and the hopper 360, the high-speed rotation (1200 to 1500 RPM min and the fixed blade 351 fixed to the inner wall of the lower end of the circular grinding cylinder 350. In this process, the waste scrap A is heated to 100 to 120 ° C Since the moisture contained in the scrap A is naturally evaporated while being heated, the drying process can be omitted.

The rotation of the cutting blade 320 is controlled by rotating the drive pulley 344 and the driven pulley 343 by rotation of the motor M to rotate the rotation shaft 342, The circular plate 346 rotates to rotate the rotary blade 320.

The waste scrap A rises on the inner wall of the circular grinding cylinder 350 due to the centrifugal force and the ascending air flow in the process of grinding the waste scrap A while rotating the rotary blade 320 at a high speed, When it comes into contact with the spiral falling guide piece 352 provided on the inner wall, it drops to the bottom and is further pulverized by the rotary blade 320 and the fixed blade 351.

When the waste scrap A is crushed while the above process is repeated, the waste scrap A is transported to the transporting port 400 through the discharge port 330 by opening the discharge port 330.

The waste scrap A discharged to the discharge port 330 is supplied to a pair of conveyance screws 430 provided in the conveyance pipe 410 through the inlet 440 and is supplied to the waste scraps A Is conveyed to the extruder 500 by the conveyance screw 430 rotated by the motor M1.

The waste scrap A transferred to the extrusion pipe 510 of the extruder 500 through the transfer port 400 is forwardly pushed by the extrusion screw 520 rotated by the motor M2, The polyester and the dissimilar material (polyethylene) are melted.

That is, since the melting point of the polyester is about 260 ° C and the melting point of polyethylene is about 130 ° C, if the internal temperature is raised to 270 ° C by using the electric heater 530 installed on the outer surface of the extrusion pipe 510, do.

When the waste scrap (A) is melted in the above case, the polyester becomes a liquid phase which easily flows down when melted. However, the heterogeneous polyethylene becomes a lump with a sticky viscosity.

Through the extrusion step S5 in which molten polyester molten material in the extrusion pipe 510 and the molten material of the dissimilar material are pressure-fed to the tip of the extrusion pipe 510 by the extrusion screw 520 as described above, The molten material of the scrap is supplied to the sorting separator 600 and subjected to the sorting step S6.

That is, the molten material that has been fed to the tip of the extrusion pipe 510 flows into the main body 610 through the inlet hole 621 of the inlet pipe 620. The molten polyester melt material, which flows down easily at this time, The molten material is extruded from the nozzle 670 and the extruded material is fed to the cooling water tank 700 through the outlet 640 of the outlet pipe 660 and then to the nozzle 670 through the outlet hole 660 of the outlet pipe 660, And the cured extrudate in the cooling water bath 700 is cut into chips in the cutter 800 and then stored in the raw material storage spaces 900. [

The heterogeneous material (polyethylene) fed into the main body 610 through the inflow hole 621 is sticky without being able to pass through the mesh screen 640 because it maintains a sticky viscosity.

When a predetermined amount of different materials is applied to the mesh screen 640, the circular support 630 is moved to the outside by using the hydraulic cylinder 650, and then the molten material made of different materials is removed and collected, and the next operation is performed .

The molten material of the heterogeneous material (polyethylene) collected above is collected separately and then treated.

As described above, according to the present invention, there is provided a process for producing a scrap, comprising the steps of: collecting and cutting waste scraps mixed with heterogeneous materials having different physical properties including polyester fibers; pulverizing the pulverized scrap into a pulverizer, A scraping step of scraping the waste scrap supplied to the extruder and forwardly feeding the waste scrap; and a step of separating and sorting the polyester and the heterogeneous material using the melt property of the molten material that has been fed And can be manufactured and reused as a resin chip through the sorting step.

(S1) - waste scrap collecting step (S2) - cutting step
(S3) - crushing step (S4) - transferring step
(S5) - Extrusion step (S6) - Separation step
(300) - crusher (310) - conveyor
(320) - rotating blade (330) - outlet
(350) - circular grinding cylinder (351) - fixed blade
(352) - Drop guide (400) - Feeder
(410) - transfer pipe (420) - fastener
(430) - Feed screw (500) - Extruder
(510) - extrusion tube (520) - extrusion screw
(530) - electric heater (600) - sorting separator
(610) - body (620) - inlet pipe
(621) - inlet hole (630) - circular support
(640) - Mesh screen (650) - Hydraulic cylinder
(660) - Outflow pipe (661) - Outflow hole
(670) - nozzle

Claims (3)

The waste scrap is collected and then cut, the scrapped scrap is pulverized, the pulverized scrap is put into an extruder, and melt extruded to produce a recycled resin chip. In the production of recycled resin chips, A waste scrap collecting step (S1) for collecting scrapped scrap, a cutting step (S2) for cutting the collected scrap to 30 to 100 cm, a cut waste scrap conveying conveyor for use in a pulverizer, A pulverizing step (S3) of finely pulverizing waste scrap using a rotary blade and a fixed blade, drying waste scrap using heat generated during pulverization, and transferring pulverized and dried waste scrap to a transfer port using the discharge port A transfer step (S4) of transferring waste scrap using a transfer screw to an extruder when the waste scrap pulverized and dried from the pulverizer is transferred to a transfer pipe of the transfer port, The scrapped scrap is melted by heating at 270 to 280 ° C. by using an electric heater. The polyester fiber is melted to be a liquid molten material passing through the mesh screen. The dissimilar material is melted, (S5) for causing the molten material to be melted with a viscous molten material to be extruded forward, and allowing the molten material extruded from the extruder to flow into the body of the separator, wherein the molten polyester is passed through a mesh screen (S6), which is capable of separately collecting and treating the molten material without being passed through the mesh screen, after being extruded, cooled and cut through the next nozzle, (JP) METHOD FOR MANUFACTURING RECYCLED RESIN CHIP using waste scrap. The method of manufacturing a recycled resin chip according to claim 1, wherein the different material is one of polypropylene (PP), polyethylene (PE), and ABS. In the production of a recycled resin chip by collecting scrap mixed with heterogeneous materials having different physical properties including polyester fibers, cutting the scrap, pulverizing the scrapped scrap, putting the pulverized scrap into an extruder, A transferring device 400 is installed on one side of the crusher 300 to transfer the crushed scrap from the crusher 300 to the transferring device 400 and the extruder 500 is installed on the entire surface of the transferring device 400 The waste scraps transferred to the transfer port 400 are supplied to the extruder 500 and the screen separator 600 is installed on the entire surface of the extruder 500 to transfer the molten polyester- The crusher 300 is provided with a hopper 360 and a discharge port 330 on the frame 340. The hopper 360 and the discharge port 330 are connected to each other by a separator 600 And a circular grinding cylinder 350 A rotary disk 346 rotated by a motor M is installed on the inner bottom surface of the circular grinding cylinder 350. A rotary blade 320 is installed on the rotary disk 346 and a circular grinding cylinder 350 And a drop guide 352 formed in a helical shape with the fixed blade 351 constitutes a pulverizer 300. The feeder 400 formed at one side of the pulverizer 300 is connected to the transfer pipe 410 A pair of feed screws 430 are installed on the inner surface of the feed pipe 410 so as to be rotated by the motor M1 and the coupling pieces 420 formed on one side of the feed pipe 410 are connected to a discharge port 330 formed on one side of the circular grinding cylinder 350, The pulverized scrap is supplied to the feeder 400 and fed to the extruder 500 by the feeder screw 430 to form the feeder 400. The pulverized scrap is fed to the feeder 400 The extruder 500 is provided with an extrusion screw 520 on the inner surface of the extrusion tube 510 and rotated by the motor M2, The extruder 500 is installed so that the waste scraps transferred to the extruder 500 are melted and then extruded by the extrusion screw 520 into the separator 600. The extruder 500 The separation separator 600 installed in the main body 610 can be separated from the main body 610 by the hydraulic cylinder 650 after inserting the circular support body 630 formed with the mesh screen 640 on the inner surface of the main body 610, The outlet pipe 610 is connected to the extrusion pipe 510 of the extruder 500 through an inlet pipe 620 formed with an inlet hole 621 and an outlet pipe 661 formed at the other end of the inlet pipe 630, The waste scrap is crushed by the crusher 300 and is conveyed to the conveyor 400 through the crusher 300. The separator 600 is connected to the separator 600 through which the nozzle 670 is connected to the leading end of the outflow pipe 660, And the waste scraps are supplied to the extruder 500 through the transfer port 400 and melted, And the melted molten material is selectively separated from the polyester and the heterogeneous material by the separator (600).

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