KR102481369B1 - Plastic recycling device - Google Patents

Abstract

Disclosed is a recycling device that handles collection, washing and crushing steps for plastics discharged by users. The present invention includes: a collection module that collects plastics and classifies the type of plastics; a cleaning module that cleans plastics by type; a crushing module that crushes plastics into chips; and a collection module that classifies plastics into PET and other plastics. The present invention can increase collection and processing efficiency of plastics.

Description

Plastic recycling device {PLASTIC RECYCLING DEVICE}

The present invention relates to a plastic recycler system, and more particularly, to a recycler capable of collecting, washing, and crushing plastics, and calculating the amount of collected plastics, the amount of plastics collected, and the amount of collected plastics to be used as big data to provide knowledge of environmental factors. It relates to a plastic recycler system comprising a platform for

In the case of plastics, PET (Polyethylene Terephthalate), PP (polypropylene), PE (polyethylene), and PS (Polystyrene) are the main types, and since each of these has different properties, the collected plastics must be reclassified by resin type. .

Reclassification of plastics is mainly performed manually by a person, but there are disadvantages in that cost and time waste are severe and the sorting efficiency is significantly lowered.

In addition, conventional waste plastics are collected and then subjected to a separate washing process to be reprocessed, and then pulverized into chips of a certain size or less through a crushing device, etc., and then reprocessed and used.

If the processes are separated from each other in this way, the structure of the waste plastic is diverse during washing, so it is impossible to clean it properly, and if it is crushed into chips in this situation, various contaminants such as soil or dust cannot be removed to a large extent. Since it is washed by immersing it in a water bath, it has a problem that a lot of water is wasted.

Of course, there is a method of first pulverizing using a crushing device and then putting it in a separate washing tank to remove dirt, but this method floats the dirt that has settled in the washing tank and overflows the washing tank. There is a problem in that a lot of water is wasted because the sewage is flushed and washed, and a large amount of wastewater is generated due to the use of this method, contaminating rivers in need of nature protection in the long term.

In addition, when the amount of waste plastics to be treated is large because the washing process and the crushing process are not solved in one process, the treatment time becomes very long, impairing work efficiency and thereby impairing productivity.

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Japanese Unexamined Patent Publication No. 2002-067030 (20020305) Japanese Unexamined Patent Publication No. 2009-208331 (20090917)

One aspect of the present invention discloses a recycler system including a recycler capable of collecting, washing and crushing plastics.

Another aspect of the present invention discloses a recycler system that provides a platform that calculates the amount of collected plastics, the amount of collected plastics, and the amount of collected plastics and uses them as big data for providing knowledge of environmental factors.

The technical problem of the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

A plastic recycler system according to an embodiment of the present invention includes a recycler device for collecting, washing, and pulverizing plastic discharged by a user; and a management server that receives and manages data on plastic collected from the recycler device.

On the other hand, the recycler device identifies the type of plastic and calculates the amount of plastic collected, washed, and crushed by type of plastic when processing the steps of collecting, washing, and crushing the plastic discharged by the user, and sends it to the management server. can transmit

In addition, the recycler device may include a collection module for collecting plastic discharged by a user and classifying the type of plastic; a washing module for washing the plastics classified by the collection module by type; and a crushing module for pulverizing the plastic cleaned by the washing module and processing the plastic into chips.

In addition, the recycler device includes a collection module that classifies the plastic input by the user into PET and other plastics,

The collection module includes an inlet into which plastic discharged by the user is input; a conveyor conveying the plastic input through the inlet; It is installed on one side of the conveyor and has a built-in memory and controller to store in advance the shape of containers and cases for each material of plastic, image the object on the conveyor and compare and read it to determine the type of plastic conveyed through the conveyor. an optical scanner that determines; a nozzle spaced apart from one end of the conveyor and supplied with air from an air sprayer; an air injector operating when a control signal is received from the optical scanner to supply air to the nozzle; a first collection box in which plastics other than PET are collected and installed close to one end of the conveyor; and a second collection box in which plastics identified as PET are collected and installed farther from one end of the conveyor than the first collection box,

When the plastic conveyed through the conveyor is identified as PET, the optical scanner applies a control signal to the air injector so that the plastic conveyed through the conveyor is stored in the second collection box by the air ejected from the nozzle. make it happen,

Each of the first collection box and the second collection box may be equipped with a weight sensor to calculate the amount of plastic to be stored therein, and transmit the calculated amount to be collected for each type of plastic to the management server.

In addition, the recycler device includes a washing and crushing module for processing washing and crushing steps for the plastic discharged by the user,

The washing and crushing module includes a hopper for inputting water introduced from the water supply pipe and the collected plastic; a crusher at the lower part of the hopper for primarily pulverizing the plastic discharged from the hopper to a predetermined size or less; a cylindrical transfer pipe for transferring plastic chips discharged from the crusher and supplying water; and a transfer screw rotatably installed by a motor within the transfer pipe.

In addition, the management server may store the collection amount, washing amount, and grinding amount for each type of plastic calculated in the recycler device as big data, and may calculate and provide data according to a user's request.

In addition, a mobile terminal in which a user app providing a recycling information providing platform is installed and executed; further comprising,

The management server may operate the recycling information providing platform.

In addition, the recycler device includes a collection box in which plastic discharged by the user is accommodated,

The collection box may include an installation unit integrally or detachably coupled to a lower end of the collection box and generating an alarm when an external impact is applied to the collection box.

According to the present invention described above, it is possible to increase the efficiency of plastic collection and treatment, and in addition, it is possible to promote the use of plastic recycling by providing meaningful plastic recycling-related data.

1 is a conceptual diagram of a plastic recycler system according to an embodiment of the present invention.
FIG. 2 is a conceptual diagram of the recycler device shown in FIG. 1 .
FIG. 3 is a view showing an example of the collection module shown in FIG. 2 .
4 to 6 are views showing the washing and grinding module shown in FIG. 2 .
FIG. 7 is a view showing an installation unit for installing the collection box shown in FIG. 3 .
8 and 9 are configuration diagrams showing the operating state of the sensing unit shown in FIG. 7 in terms of a bottom surface and a longitudinal cross-section.
10 and 11 are views for explaining a sensing unit according to another embodiment of the present invention.
12 is a block diagram illustrating a recycling waste management system according to an embodiment of the present invention.
13 is a block diagram illustrating a collection box of a recycling waste management system according to an embodiment of the present invention.
14 is a block diagram illustrating a local government server of a recycling waste management system according to an embodiment of the present invention.
15 is a block diagram illustrating a management office server of a recycling waste management system according to an embodiment of the present invention.
16 is a block diagram illustrating an Environment Corporation server added to a recycling waste management system according to an embodiment of the present invention.
17 is a flowchart illustrating a recycling waste management method according to an embodiment of the present invention.
18 is a flowchart illustrating step S300 of FIG. 17 in the recycling waste management method according to an embodiment of the present invention.
19 is a flowchart illustrating step S400 of FIG. 17 in the recycling waste management method according to an embodiment of the present invention.
20 is a flowchart illustrating step S600 of FIG. 17 in the recycling waste management method according to an embodiment of the present invention.
21 is a view showing a portion of the conveyor shown in FIG. 3;

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

Terminology used herein is for describing the embodiments and is not intended to limit the present invention. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. As used herein, “comprises” and/or “comprising” do not preclude the presence or addition of one or more other components, steps, and operations to the stated components, steps, and operations.

1 is a conceptual diagram of a plastic recycler system according to an embodiment of the present invention.

Referring to FIG. 1 , a plastic recycler system 1000 according to an embodiment of the present invention may include a recycler device 10, a management server 20, and a mobile terminal 30.

The recycler device 10 may process waste plastic collection, washing, and crushing steps for reprocessing and using the waste plastic. That is, the recycler device 10 may collect, wash, and pulverize waste plastics to process them into chips of a predetermined size or less, and these waste plastic chips may be reprocessed and used. For example, waste plastic chips processed by the recycler device 10 may be transported to a company with which an MOU has been concluded and reprocessed.

The recycler device 10 may identify the type of plastic and calculate a collection amount, washing amount, and grinding amount for each type of plastic when processing the collection, washing, and crushing steps for the plastic discharged by the user.

The management server 20 may manage user apps that provide a recycling information providing platform according to the present invention.

The management server 20 may be connected to the recycler device 10 through a communication network, and may receive plastic recycling processing data from the recycler device 10 to operate a recycling information providing platform.

The recycling information providing platform may store the collected amount, washing amount, and grinding amount for each type of plastic calculated by the recycler device 10 as big data, and may calculate and provide data according to a user's request. For example, data such as collection statistics for each type of plastic may be calculated and provided.

In addition, the recycling information providing platform may grant points when a user discharges plastics through the recycler device 10 and may provide a sales service of reprocessed plastic products payable with points.

The mobile terminal 30 may have a user app installed and executed that provides a recycling information providing platform according to the present invention.

FIG. 2 is a conceptual diagram of the recycler device shown in FIG. 1 .

Referring to FIG. 2 , the recycler device 10 may include a collection module 11 , a washing module 12 and a grinding module 13 .

The collection module 11 may collect plastic discharged by the user and classify the type of plastic.

The collection module 11 may measure and transmit the amount collected for each type of plastic to the management server 20 .

The washing module 12 may wash the plastics classified by the collection module 11 by type.

The washing module 12 may measure and transmit the amount of washing for each type of plastic to the management server 20 .

The crushing module 13 may crush the plastic cleaned by the washing module 12 and process it into chips.

The crushing module 13 may measure the amount of crushing for each type of plastic and transmit the measured amount to the management server 20 .

FIG. 3 is a view showing an example of the collection module shown in FIG. 2 .

Referring to FIG. 3 , the collection module 11 may classify plastic input by the user according to properties.

For example, the collection module 11 may classify plastic input by the user into polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), and polystyrene (PS). Alternatively, the collection module 11 may classify the plastic input by the user into PET and other plastics. Plastics are mainly made of PET, PP, PE and PS, and since each of them has different properties, it is possible to increase recycling efficiency by classifying them by type.

The collection module 11 may include an inlet 111, a conveyor 112, an optical scanner 113, an air sprayer 114, a nozzle 115, and a plurality of collection boxes 116a and 116b.

Plastic may be injected into the inlet 111 .

The conveyor 112 may transport the plastic input through the inlet 111 .

The optical scanner 113 is installed on one side of the conveyor 112 and has a built-in memory and controller to identify the type of plastic transported through the conveyor 112 .

The optical scanner 113 is a known optical scanner in the art, and stores the shape of a container or case made of PET, PP, PE, or PS as a main material in a memory in advance, and captures an image of an object on the conveyor 112. You can identify what kind of plastic it is by comparing and reading it.

The nozzle 115 may be spaced apart from one end of the conveyor 112, and air may be supplied from the air sprayer 114.

The air injector 114 may receive a control signal from the optical scanner 113 and supply air to the nozzle 115 by operating according to the control signal received from the optical scanner 113 .

At least two or more collection bins 116a and 116b may be provided and may be installed close to one end of the conveyor 112 .

In this embodiment, the collection boxes 116a and 116b may be classified into a first collection box 116a in which plastics other than PET are collected and a second collection box 116b in which plastics identified as PET are collected.

The first collection box 116a may be installed close to one end of the conveyor 112, and the second collection box 116b may be installed farther from one end of the conveyor 112 than the first collection box 116a.

The optical scanner 113 may apply a control signal to the air injector 114 when the plastic transported through the conveyor 112 is recognized as PET. In this case, the plastic transported through the conveyor 112 may be scattered far away by air sprayed from the nozzle 115 at one end of the conveyor 112 and stored in the second collection box 112b.

The optical scanner 113 does not apply a control signal to the air injector 114 when the plastic transported through the conveyor 112 is recognized as PP, PE, or PS other than PET, so that the plastic transported through the conveyor 112 The plastic may directly fall from one end of the conveyor 112 and be stored in the first collection box 116a.

Each of the plurality of collection bins 116a and 116b is equipped with a weight sensor to calculate the collection amount of the stored plastic.

That is, the collection module 11 may calculate the collection amount for each type of plastic and transmit the collection amount for each type of plastic to the management server 20 through a predetermined communication module.

The washing module 20 and the crushing module 30 may be integrally formed.

This will be described with reference to FIGS. 4 to 6 .

4 to 6 are views showing the washing and grinding module shown in FIG. 2 .

4 to 6, the washing and crushing modules 20 and 30 according to an embodiment of the present invention remove water (W) introduced from water supply pipes (211a, 211b) and collected plastic (P). A hopper 210 for inputting and a pulverizer 311 for primarily pulverizing the plastic P discharged from the hopper 210 into a predetermined size or less are provided at the bottom of the hopper 210, and the pulverizer ( 311), a cylindrical conveying pipe 312 for conveying the pulverized waste plastic chips P' and a conveying screw 314 rotatably installed by a motor 313 in the conveying pipe 312 are formed. there is.

A plurality of pipe fixing holes 212c, 212d, and 212e are formed on the upper inner wall of the transfer pipe 312 to maintain a predetermined interval so that water is obtained from the water supply pipes 211c, 211d, and 211e inside the transfer screw 314 do.

In addition, the transfer screw 314 has a structure that progresses from one end located at the inlet 310 of the transfer pipe 312 to the other end located at the discharge unit 315.

In addition, the central axis 314a protruding to the outside of the transfer screw 314 is fastened to the drive shaft 313a of the motor 313 with a belt 314b, and when the motor 313 rotates, the belt 314b is driven so that the transfer screw 314 rotates.

Of course, the cutter 317 of the grinder 311 is also fastened to the central axis 317a of the cutter 317 and the drive shaft 313a of the motor 313 with a belt 317b so that the motor 313 rotates. (317b) is driven to rotate the cutter (317).

The cutter 317 of the above-described grinder 311 is preferably composed of a plurality of cutters 317.

The water supply pipes 211a, 211b, 211c, 211d, and 211e are fixed to the pipe fixing holes 212c, 212d, and 212e of the hopper 210 and the transfer pipe 312 to supply water W, which is constant inside. The water W is supplied to the inside of the hopper 210 and the transfer pipe 312 at the lower part of the water tank 211 filled with water W of the water level, so that the water W is branched through the branch pipe 212.

At this time, the plurality of water supply pipes 211a, 211b, 211c, 211d, and 211e branching from the branch pipe 212 are provided with as many control valves 213 as the number of water supply pipes to independently control the water supply amount. do.

It is also preferable that only one of the above-described control valves 213 is configured at the top of the branch pipe 212 so that all the water supply pipes 211a, 211b, 211c, 211d, and 211e can be locked or unlocked at once.

The washed and crushed waste plastic chips (P'') are discharged together with water (W) through the discharge part 315 of the transfer pipe 312. Water (W) is collected in the water tank (215).

Inside the water tank 215, fine grooves are maintained at regular intervals so that the washed pulverized waste plastic chips P' discharged from the outlet P'' of the transfer pipe 312 are seated on the water surface. Since the formed fine net 216 is formed to be detachable, the waste plastic chip P' is seated and the remaining dirt passes the fine net 216 and falls to the bottom of the water surface to be separated.

The fine net 216 is formed in a multi-layered structure. The fine net 216a at the top has a large groove so that only the waste plastic chips P' are seated, and the lower layer has a fine net 216b that is denser than the top, so that it can filter out dirt with large particles. this is preferable

A pump 214 for sucking water (W') in the water tank 215 is provided on one side of the outside of the water tank 215, and an inlet pipe 217 connected to the pump 214 is connected to the bottom of the water tank 215. It is fixed to be positioned at a predetermined interval, and the discharge pipe 218 of the pump 214 supplies water (W) to the water tank 211 that supplies water (W) to the hopper 210 and the transfer pipe 312, thereby supplying water (W) as a whole. It is configured for cyclic use.

At this time, the pump 214 not only operates with a separate power source, but also is preferably configured to receive power and operate at the same time when driving power is applied to the motor 313.

In addition, it is preferable that the inlet of the inlet pipe 217 of the pump 214 is formed with a net 217a to prevent dirt D accumulated on the bottom surface of the water tank 215 from flowing into the pump 214.

Hereinafter, the operation process of the washing and grinding modules 20 and 30 will be described.

When power is supplied to the motor 313 by an operation of a power switch (not shown), the rotation shaft 540 of the motor 313 rotates.

The rotating shaft 540 of the motor 313 is connected to the central axis 317a of the cutter 317 of the grinder 311 and the central axis 314a of the transfer screw 314 by belts 42a and 42b, so that the cutter ( 317) and the transfer screw 314 are rotated.

At this time, when the plastic (P) flows into the hopper 210 and the water (W) in the water tank 211 flows into the hopper 210 by adjusting the control valve 213 of the water supply pipes 211a and 211b , While passing through the cutter 317 of the crusher 311, it is pulverized into uniform waste plastic chips (P') of a certain size (eg, about 1 cm3) and introduced into the transfer pipe 312.

The introduced waste plastic chips (P') are covered with water (W), but in order to more cleanly wash the waste plastic chips (P'), the inlet ( 310) is fixed to the pipe fixing holes 212c, 212d, and 212e formed on the upper part of the transfer pipe 312 to smoothly discharge the waste plastic chips P' to the discharge port P'' and clean them. The water W of the water tank 211 is supplied from the water supply pipes 211c, 211d, and 211e.

The water W and the waste plastic chips P' pumped through the outlet P'' in this way fall onto the fine net 56 inside the water tank 215 formed at the bottom of the outlet P''.

At this time, the grooves of the fine net 56 are formed in a predetermined size (eg, less than 1 cm 2 ) to prevent the waste plastic chips P' having a predetermined size (eg, about 1 cm 3 ) from escaping.

The filth (D) and water (W') flowing down in this way fall to the bottom of the fine net (56), which is again introduced through the inlet pipe (217) by the operation of the pump (214), and through the discharge pipe (218) to the water tank. (211) will be resupplied.

As such, when continuously used for a certain period of time, the plastic chips (P') are piled up on the fine net (56), and after separating them, they can be separately reprocessed and used.

In addition, it is preferable to clean the dirt (D) accumulated on the inner bottom of the water tank 215 once at regular intervals.

Each of the washing and crushing modules 20 and 30 may be provided to correspond to the plurality of collection bins 116a and 116b, and the sorted plastics P will be put into each hopper 210 .

The inlet 310 and the fine mesh 216 each have a weight sensor, so that the washing amount and grinding amount of the plastic can be calculated, respectively.

That is, the plurality of washing and grinding modules 20 and 30 can calculate the amount of washing and pulverization for each type of plastic, and the amount of washing and pulverization for each type of plastic is transmitted to the management server 20 through a predetermined communication module. can be sent to

FIG. 7 is a view showing an installation unit for installing the collection box shown in FIG. 3 .

Referring to FIG. 7 , the installation unit 500 may be integrally or detachably coupled to the lower end of the collection box 116, and when the collection box 116 collapses or an external shock is applied, an alarm is generated to alert the operator It works so that appropriate action can be taken.

The installation unit 500 may be formed in a form in which the collection box 116 is fitted in the center, and the air tank 510 for storing air pressure, the conduit 520 connected to the air tank 510, and the conduit 520 It may include an opening/closing unit 530 installed thereon, an alarm unit 560 connected to the conduit 520, and a sensing unit 540 generating operating force of the opening/closing unit 530.

The air tank 510 has an inlet 511 on the top and/or bottom of the air tank 510 so that exhausted air can be refilled. At the same time, a pressure gauge 512 may be installed on the top and/or bottom of the air tank 510 to easily check whether an appropriate air pressure is maintained.

If the strength of the air tank 510 is sufficient, it is possible to visually check the degree of expansion by pneumatic pressure, so the pressure gauge 512 can be omitted.

One end of the conduit 520 is connected to the air tank 510 and the other end is opened through the alarm unit 560.

The opening/closing unit 530 is a method of manually opening and closing the passage, and may be installed in plurality on the conduit 520 to increase operational reliability.

The alarm unit 560 may have various types of structure such as a general air horn, a whistle, a siren, etc., and a high frequency sound transmission is superior to a low frequency sound.

At this time, the conduit 520 further includes a control valve 580 for adjusting the air injection pressure. At the same time that the opening/closing unit 530 is opened, the air passes through the control valve 580 and sounds the alarm unit 560. The control valve 580 adjusts the air pressure reaching the alarm unit 560 to change the volume of the sound. can

The sensor 540 may detect an external impact applied to the collection box 116 to generate operating force of the opening/closing unit 530 . That is, when an impact is applied to the collection box 116 from the outside, mechanical force is transmitted to the opening/closing unit 530 by the operation of the sensing unit 540 so that the conduit 32 can be opened. This will be described with reference to FIGS. 8 and 9 .

8 and 9 are configuration diagrams showing the operating state of the sensing unit shown in FIG. 7 in terms of a bottom surface and a longitudinal cross-section.

Referring to FIG. 8 , the sensor 540 includes a pivoting weight 541 rotatably installed to interlock with the vibration of the collection box 116 and an elastic plate that elastically contacts the pivoting weight 541 and moves up and down. 542, and a link 543 and a rod 544 connected to the elastic plate 542 to convert linear motion into rotational motion.

The pivot weight 541 is formed in the shape of an upper and lower jaw and is rotatably installed in the housing 545 in an inverted state.

The elastic plate 542 is installed to be able to move up and down in a state supported by a spring 546 on the bottom surface, and is in a state in which the rise is restricted while in contact with the pivot weight 541 at the center of the upper surface.

A link 543 and a rod 544 are connected to the left and right ends of the elastic plate 542 to convert the vertical motion of the elastic plate 542 into a rotational motion.

The rod 544 is connected to the opening/closing part 530 to open and close the conduit 520 .

As shown in FIG. 8, when the collection box 116 is in a stable state, the pivot weight 541 does not rise by pressing the elastic plate 542 in an inverted state, but as shown in FIG. If it exceeds, the elastic plate 542 rises while the pivoting weight 541 is inclined, and the opening/closing part 530 is opened by the operation of the link 543 and the rod 544, and the alarm unit 560 generates an alarm sound.

For reuse, when a separate lever (not shown) elastic plate 542 is lowered to the original position and the pivot weight 541 is left in an inverted state, the initial state is restored.

In this way, when the collection box 116 is overturned or shaken severely by a strong external impact, the installation unit 500 exceeds a critical point and alerts the operator.

Meanwhile, FIGS. 10 and 11 are views for explaining a sensing unit according to another embodiment of the present invention.

Referring to FIG. 10, the sensing unit 540' according to another embodiment of the present invention includes a pivoting plate 647 that is elastically supported and installed to rotate, and a rod that locks the pivoting plate 647 to a position after rotation ( 544'), a wire 548 connected to the rod 544' so as to interlock with the conduction of the collection box 116, and a lever 549 contacting to return the rotation plate 647 to its original position.

A lever 549 is rotatably installed on one side of the pivot plate 647 on the other side of the housing 545 via the auxiliary housing 545a.

The pivoting plate 647 has a flat plate structure, and comes into contact with the rod 544' at one end and contacts the operating arm 549a of the lever 549 at the upper surface.

The rotation plate 647 and the rod 544' receive a rotational force in one direction by the torsion spring 549b, respectively.

A locking jaw 549c is formed on the bottom surface of the rod 544' to restrict movement according to the rotational position of the rotational plate 647.

The wire 548 has one end connected to the upper end of the rod 544' and the other end connected to the junction 548a between the installation unit 500 and the collection box 116 through the inner surface of the collection box 116.

As shown in FIG. 11, when the shaking of the collection box 116 exceeds the set value, the wire 548 rotates the rod 544' to rotate the rotation plate 647 constrained to the locking jaw 549c, thereby rotating the opening/closing unit. 530 opens and alarm unit 560 operates. When the lever 549 is rotated for reuse, the rotation plate 647 reversely rotates while overcoming the elastic force of the torsion spring 549b, and the rotation is restricted by the locking jaw 549c, so that the initial state is returned to

12 is a block diagram illustrating a recycling waste management system according to an embodiment of the present invention.

As shown in FIG. 12, the recycling waste management system of the present invention includes a collection box 100 for collecting recycling waste and a server, which in this embodiment includes a local government server 200 and a management office server ( 300).

The collection box 100 recognizes the user's ID by tagging the user's identifier, opens the inlet, and measures the weight of the recyclable garbage to generate information on the weight and type of recycled garbage (plastic, vinyl, cans, paper, clothes). etc.) along with the user ID to the server of the local government, and the status information including the existence of obstacles and the capacity status of the recycling bin is transmitted to the management office server.

Unlike this, the measuring unit may be provided outside the collection box to measure the weight of the recyclable waste before putting it into the collection box.

In addition, the identifier refers to a device capable of recognizing a user ID by tagging, and for example, biometric information such as a recycling card or password issued by household or a user's fingerprint may also be the identifier.

If the identifier is identification information such as a user's fingerprint, the tagging may be a touch.

At this time, the local government server 200 receives user ID and recycling weight information from the collection box, generates payout information including the user ID to match predetermined payout data, and transmits the generated payout information to the management office server. do.

At this time, the management office server 300 manages the collection box by receiving state information including the presence or absence of a failure and the capacity of the recycling waste collection container from the collection box, and extracts and generates payment information received from the server of the local government for each user ID. The management fee refund information (payment information) is transmitted to the e-mail address of the pre-stored user ID or mobile terminal.

13 is a block diagram illustrating a collection box of a recycling waste management system according to an embodiment of the present invention.

At this time, as shown in FIG. 12 , the collection box 100 includes an authentication communication unit 110, an inlet 120, a metering unit 130, a processing unit 140, and a monitoring unit 150.

At this time, the authentication communication unit 110 recognizes the user ID by tagging the identifier possessed by the user and transmits the user ID to the server 200 of the local government, and the open signal or close signal received from the server 200 of the local government is sent to the input port 120. ), receives recycling garbage weight information from the weighing unit 130, and transmits the user ID and recycling garbage weight information to the local government server 200.

At this time, the authentication communication unit 110 controls the operating states of the inlet 120, the metering unit 130, and the processing unit 140 through a self-checking function, including the presence or absence of failure and the capacity state of the recycling garbage collection container. and transmits the status information to the management office server 300.

In addition, transmission and reception of information between the collection box 100 and the local government server 200 is performed by any one of wired Internet network, wireless Internet network, mobile communication network (3G network / 4G network), or Wi-Fi (Wireless Fidelity).

In addition, the authentication communication unit 110 supports IEEE 802.11a/b/g/n and transmits the status information to the management office server 300 using wireless communication such as Wi-Fi or Zigbee communication.

At this time, the inlet 120 opens the inlet according to the open signal received from the authentication communication unit 110 and closes the opened inlet according to the close signal received from the authentication communication unit 110 .

At this time, the weighing unit 130 measures the weight of the recyclable waste put into the inlet 120 (or before being put into the inlet) and transmits the generated recyclable waste weight information to the authentication communication unit 110 .

At this time, the processing unit 140 is disposed inside the collection box and processes the input recycling waste. For example, the volume of the input recycling waste is reduced as much as possible by physically treating the recyclable waste such as drying, compressing, or crushing.

In addition, the processing unit 140 performs different physical processing according to the type of recycled waste input. This will be described in detail later.

At this time, the monitoring unit 150 is composed of a small camera and takes images of the authentication communication unit 110 and the inlet 120, extracts person information included in the captured images, stores and manages them in a database, The captured image and character information are transmitted to the local government server 200 or the management office server 300.

In addition, at this time, the monitoring unit 150 detects whether or not there is damage due to impact, firstly stores the person information extracted from the captured image in the built-in storage device, and uses the local government server 200 or management for secondary storage. It is transmitted to the office server 300.

In addition, the monitoring unit 150 searches and extracts faces and objects/texts from the captured images in real time, and captures the captured images and character information only when a predetermined specific event (human/vehicle/violation detection) occurs. is transmitted to the local government server 200 or the management office server 300.

In addition, the storage device of the monitoring unit 150 is composed of non-volatile memory, and even if composed of volatile memory, a configuration that prevents volatilization may be added. In addition, for reliability of storage, a non-volatile memory and a volatile memory may be redundantly configured and stored redundantly.

In addition, the exterior enclosure of the collection box 100 is coated to prevent corrosion, a rain/wind protection is installed on the upper end, and a canopy is installed on the exterior of the enclosure.

14 is a block diagram illustrating a local government server of a recycling waste management system according to an embodiment of the present invention.

At this time, the local government server 200, as shown in FIG. 14, consists of a discharge management unit 210, an authentication management unit 220, and a payment management unit 230.

At this time, the discharge management unit 210 stores and manages one or more user IDs and a list of the management office server 300 to which the user ID belongs, and stores and manages recycling garbage weight information and payment information for each user ID. manage

At this time, the authentication management unit 220 receives the user ID from the collection box 100, checks the user ID that matches the user ID indexed from the pre-stored database, performs user authentication, and opens the generated user ID according to the authentication. A signal or a closing signal is transmitted to the collection box 100.

In addition, the authentication management unit communicates with the collection box 100 through communication such as wired Internet, wireless Internet, mobile communication network (3G network/4G network), or Wi-Fi (Wireless Fidelity).

At this time, the payment management unit 230 receives the recycling waste weight information from the collection box 100, receives the user ID from the authentication management unit 220, and indexes the received recycling garbage weight information from a pre-stored database. To match the data, payment information matched with the user ID is generated, and the generated payment information is transmitted to the management office server 300 to which the user ID belongs.

At this time, the local government server 200 may further include a statistics management unit 240, and the statistics management unit 240 transmits recycling waste weight information and payment information from the payment management unit 230 to the authentication management unit 220. Generate statistical information by calculating monthly statistical details for each authorized user ID, collect recycling waste weight information and payment information for management offices to which one or more user IDs belong, and calculate monthly statistical details for the collected management offices. Create administrative office statistical information.

15 is a block diagram illustrating a management office server of a recycling waste management system according to an embodiment of the present invention.

At this time, as shown in FIG. 15, the management office server 300 includes a recycling waste management unit 310, a collection box management unit 320, and a collection notification unit 330.

At this time, the recycling waste management unit 310 receives payment information from the local government server 200, and the received payment information corresponds to a user ID pre-stored in the database, and management fee refund information generated to pay is stored in the user ID. It is sent to an e-mail address or mobile terminal.

At this time, the collection box management unit 320 receives status information from the collection box 100 and monitors the existence of a failure and the capacity state of the collection box 100 in real time, but when a failure occurs in the collection box 100, the status information The included failure details are transmitted to the preset manager terminal.

In addition, the collection box manager 320 supports IEEE 802.11a/b/g/n and uses wireless communication such as Wi-Fi or Zigbee communication.

At this time, the collection notification unit 330 generates collection request information for requesting collection of recyclable waste when the capacity state of the collection box included in the status information transmitted from the collection box manager 320 exceeds the preset capacity, Send to recycling waste collector.

In addition, the status information includes the capacity status of the collection box, the authentication communication unit 110, the inlet 120, the metering unit 130, the processing unit 140, and the monitoring unit 150 of the collection box 100, each of which is in a preset normal operation. or whether an error occurred.

16 is a block diagram illustrating an Environment Corporation server added to a recycling waste management system according to an embodiment of the present invention.

At this time, as shown in FIG. 16, the recycling waste management system may further include the Environment Corporation server 400, and the Environment Corporation server 400 receives recycling garbage weight information and recycling waste weight information from one or more local government servers 200. It receives payment information, calculates monthly statistics for each server of the local government, creates, stores and manages the statistical information of the local government, and monitors the statistical information of the local government in real time. Here, the Environmental Corporation is just an example, and any separate organization other than a management office or a local government is possible.

In addition, recycling garbage weight information and payment information received from the local government servers 200 may be encrypted by a preset security module.

17 is a flowchart illustrating a recycling waste management method according to an embodiment of the present invention.

In addition, as shown in FIG. 17, the recycling waste management method of the present invention includes the steps of the collection box 100 transmitting the user ID recognized by tagging to the user identifier to the local government server 200 (S100); , The local government server 200 checks a user ID that matches the user ID indexed from a pre-stored database, performs user authentication, and transmits the generated open signal to the collection box 100 (S200), and the collection box 100 Receiving an opening signal from the server 200 of the local government and opening the recycling waste inlet (S300), and measuring the weight of the recycling garbage put into the collection box 100, generates the recycled garbage weight information together with the user ID. The step of transmitting to the local government server 200 (S400) and generating payment information including the user ID so that the user ID and recycling garbage weight information received by the local government server 200 conform to the preset payment data, and the management office server ( 300) and transmitting the management fee refund information generated by extracting the payment information received by the management office server 300 for each user ID to the e-mail address of the previously stored user ID or mobile terminal (S600). ) is made up of

In addition, the identifier refers to a device capable of recognizing a user ID by tagging with a recycled card or the like, and furthermore, biometric information such as a user's fingerprint may also be the identifier.

In addition, when the identifier is identification information such as a user's fingerprint, the tagging may be a touch.

18 is a flowchart illustrating step S300 of FIG. 17 in the recycling waste management method according to an embodiment of the present invention.

At this time, in the step (S300), as shown in FIG. 18, the authentication communication unit 110 of the collection box 100 transmits the opening signal received from the server 200 of the local government to the inlet 120 (S310). and opening the inlet 120 of the collection box 100 according to the opening signal authorized from the authentication communication unit 110 (S320).

19 is a flowchart illustrating step S400 of FIG. 17 in the recycling waste management method according to an embodiment of the present invention.

At this time, as shown in FIG. 19, the step S400 includes a step (S410) in which the processing unit 140 disposed in the collection box 100 processes the input recyclable waste, and the metering unit 130 of the collection box 100 Step S420 of measuring the weight of the recycling waste and transmitting the generated recycling waste weight information to the authentication communication unit 110, and the authentication communication unit 110 of the collection box 100 transmits the recycling waste weight information from the weighing unit 130 is received, and the user ID and recycling garbage weight information are transmitted to the local government server 200 (S430).

In addition, the processing unit 140 reduces the volume of the input recycling trash as much as possible by physically processing the input recycling trash.

In addition, the processing unit 140 performs different physical processing according to the type of recycled waste input. For example, when a can is introduced, the can is compressed, and when a vinyl is introduced, the vinyl is compressed and then compressed again with a high-temperature roller. In addition, when the plastic is introduced, the plastic is compressed and pulverized while applying heat. The processing unit 140 reduces the volume of the input recycling waste as much as possible by performing various physical treatments according to the type of recycling waste.

20 is a flowchart illustrating step S600 of FIG. 17 in the recycling waste management method according to an embodiment of the present invention.

At this time, in the step (S600), as shown in FIG. 20, the user ID and the payment amount management unit 230 of the local government server 200 match the payment data obtained by indexing the weight information of the recyclable garbage received from the pre-stored database. Generating matched payment information (S610), and transmitting the payment information generated by the payment management unit 230 of the local government server 200 to the management office server 300 to which the user ID belongs (S620); A step in which the statistics management unit 240 of the local government server 200 generates statistical information by calculating monthly statistics for each user ID authorized by the authentication management unit 220 for recycling waste weight information and payment information from the payment management unit 230 ( S630).

One embodiment according to the present invention is an example installed in a multi-unit dwelling such as an apartment, and the server is configured separately into a local government server 200 and a management office server 300. However, according to the present invention, it is natural that one server can perform the roles of the local government server 200 and the management office server 300 .

21 is a view showing a portion of the conveyor shown in FIG. 3;

Referring to FIG. 21 , the conveyor 112 may include a conveyor belt 1121, a sliding block 1122, and a sliding bar 1123.

The conveyor belt 1121 may be wound around a rotating shaft and rotated to transport plastic.

A pair of sliding blocks 1122 may be provided, and the conveyor belt 1121 may be wound around a rotating shaft passing through the sliding blocks 1122 .

The pair of sliding blocks 1122 may have a plurality of sliding grooves 1124 formed side by side in the vertical direction, respectively, on surfaces facing each other. At this time, the plurality of sliding grooves 1124 may be formed with different lengths, for example, they are formed vertically symmetrically with respect to the central portion of the sliding block 1122, but the length becomes shorter toward the central portion It can be.

A plurality of sliding bars 1123 may be provided, and both ends may be installed on a pair of sliding blocks 1122, respectively.

The sliding bar 1123 may slide and move along the sliding groove 1124 at predetermined intervals. The sliding bar 1123 may press the conveyor belt 1121 in a horizontal direction.

The conveyor 112 as described above has an advantageous effect of being able to shake off foreign substances generated by plastic transport and facilitating maintenance.

Another embodiment of the recycling waste management method according to the present invention will be described. Another embodiment of the recycling waste management method according to the present invention includes (1) transmitting a user ID recognized in a collection box for collecting recycling waste to a server; (2) measuring the weight of the recycling waste to be discharged by the user using a weighing unit; (3) checking a user ID identical to a user ID indexed from a pre-stored database by the server, performing user authentication, and transmitting the generated inlet opening signal to a collection box; (4) opening the inlet by receiving an opening signal from the server; (5) measuring the weight of the recyclable waste put into the collection box and transmitting type and weight information of the recyclable waste together with a user ID to the server; (6) generating, by the server, payout information including the user ID so that the received user ID and the type and weight information of the recyclable garbage conform to predetermined payout data; and (7) the server extracting payment information for each user ID and transmitting the information to an e-mail address or portable terminal of a pre-stored user ID.

This embodiment differs from the previously described recycling waste management method in that the weight of the recycling waste is measured before putting it into the inlet.

Other than that, since it is the same as the previous embodiment, a detailed description thereof will be omitted.

The present invention comprises the steps of preparing recycled plastic by pulverizing waste plastic containing hemp fibers, washing and drying; preparing a zinc-polymer nanocomposite by dispersing zinc nanoparticles having an average size of 2 to 20 nm and a reduced zinc crystal phase content of 50% by weight or more in CTBN (Carboxyl Terminated Butadiene Acrylonitrile); and melt-extruding the mixture containing the materials prepared in each step.

Waste plastics containing hemp fibers used in the present invention can be collected from various sources such as automobile interior parts, household goods, and industrial parts. Matrix polymers used in waste plastics are mainly polypropylene, polyethylene, PVC, ABS, nylon, and PET. or polymer alloys in which these are combined. According to the present invention, the collected waste plastic is mechanically pulverized to a size of 1 to 15 mm, and the pulverized product is mixed with an excess of water in a water bath to remove impurities including paint fragments, etc., and dried to regenerate plastic can be prepared.

The zinc-polymer nanocomposite in the present invention may be prepared by dispersing zinc nanoparticles having an average particle diameter of 2 to 20 nm and a reduced zinc crystalline phase content of 50% by weight or more in CTBN. Zinc nanoparticles in the present invention can be prepared by applying a high voltage between zinc electrodes in a reducing dispersion medium, and a product provided in a powder, slurry or colloidal solution state can be used.

In order to control the average particle diameter of the zinc nanoparticles to a small size of 2 nm or less, the synthesis cost is high and economical efficiency is low. On the other hand, when the average size of the zinc nanoparticles is 20 nm or more, the surface area per unit weight is significantly reduced, so the amount of zinc nanoparticles must be increased to supplement the physical properties of the regenerated polymer composition, which lowers the melt processability of the regenerated polymer composition. In addition, the manufacturing cost increases, making it difficult to achieve economic feasibility. Zinc nanoparticles may have a reduced zinc crystal phase and a composite crystal phase of an oxide zinc crystal phase. In the present invention, it is preferable that the fraction of the reduced zinc crystal phase is 50% or more. In this case, the terminal carboxyl group of the CTBN forms a complex with the reduced zinc element on the surface of the zinc nanoparticle, thereby forming a complex with the zinc nanoparticle in the zinc-polymer nanocomposite. It dramatically improves the dispersion stability of particles. In addition, when the zinc-polymer nanocomposite is mixed with recycled plastic and melt-extruded, the CTBN acts as a carrier for the zinc nanoparticles so that the zinc nanoparticles can be uniformly dispersed on the surface of the long fibers in the recycled plastic.

The CTBN (Carboxyl Terminated Butadiene Acrylonitrile) has a basic polymer chain structure of a copolymer of acrylonitrile and butadiene, with carboxyl groups attached to both ends.

Zinc nanoparticles dispersed in recycled plastic containing hemp fibers mainly combine with the remaining moisture on the surface of the long fibers to form hydrates, which causes problems during melt extrusion due to the remaining moisture, such as poor melting due to the generation of bubbles. It can improve the mixing state or prevent the degradation of the polymer due to moisture.

In addition, when the zinc nanocomposite is incorporated into recycled plastic prepared from waste plastic containing hemp fibers and melt-extruded in an extruder, the zinc nanoparticles having an average particle diameter of 2 to 20 nm act on the molten polymer chain, The molten state of the polymer can be transformed from a non-Newtonian fluid to a behavior state close to that of a Newtonian fluid, thereby increasing the compatibility between the matrix polymer and the fibrous pulverized material. In addition, a significant amount of the zinc nanoparticles, which are the main component of the zinc nanocomposite, exist adsorbed on the surface of foreign substances or fibrous fillers mixed in the regenerated polymer composition together with the CTBN chain adsorbed on the surface, thereby enhancing the affinity between the fibrous filler and the matrix polymer. Since the chemical property is increased, the reinforcing effect of the fibrous filler can be enhanced. In addition, zinc nanoparticles having an average particle diameter of 2 to 20 nm can function as a crystal nucleating agent by being dispersed in the matrix polymer, causing nano-level crystallization of the matrix polymer during the cooling process after melt extrusion, thereby regenerating the polymer composition. It can serve to improve thermal and mechanical properties.

The zinc-polymer nanocomposite may be prepared by dispersing 1 to 30 parts by weight of zinc nanoparticles per 100 parts by weight of CTBN. When zinc nanoparticles are incorporated in an amount less than 1% by weight, the content of zinc nanoparticles in the finally produced regenerated polymer composition is too low, and the effect of improving physical properties, including the improvement of water absorption and melt processing properties, may be insignificant, and 30% by weight In the above case, the efficiency of complex formation with CTBN is lowered, and the dispersion effect of the zinc nanoparticles may be reduced.

Since the content of hemp fibers included in the waste plastic according to the present invention varies greatly depending on the collection source, the waste plastic applicable to the present invention preferably has a hemp fiber content of 5 to 60% by weight. For example, when the hemp fiber content is 5% by weight or less, even if a conventional general recycling technique is applied, the physical properties are not significantly deteriorated, so the economic efficiency of recycling according to the present invention technology is relatively low. On the other hand, when the hemp fiber content exceeds 60% by weight, the possibility of fiber modification during processing such as melt extrusion increases, the injection moldability significantly deteriorates, and the physical properties of the extrudate due to moisture absorption in the cooling and processing processes. There is a problem that it is difficult to compensate for the degradation.

The recycled polymer composition prepared according to the present invention can also be produced by adding a separate fibrous filler to waste plastic containing hemp fibers. Meanwhile, in order to produce a cheaper recycled polymer composition, only fibrous materials from waste automobile interior parts, waste household items, waste clothing, or discarded industrial parts may be separately separated and recycled, and then mixed with waste plastic as a fibrous pulverized product. The weight ratio of mixing the fibrous filler or pulverized fibrous material with the waste plastic may be arbitrarily adjusted according to the amount of hemp fiber contained in the waste plastic and the physical properties required according to the use of the recycled polymer composition. For example, as the content of hemp fibers in the waste plastic is lower or the physical properties of the recycled polymer composition require a higher level of the fiber filler content, the mixing ratio of the fibrous filler or fibrous pulverized material relative to the unit weight of the waste plastic can be arbitrarily increased. Of course.

The recycled plastic prepared according to the above method and the zinc-polymer nanocomposite may be mixed in a Henschel mixer and then melt-extruded as strands through a conventional extrusion device to prepare a recycled polymer composition. The recycled polymer composition according to the present invention may be prepared by mixing and melt-extruding only recycled plastic and zinc-polymer nanocomposite. It is advantageous to stabilize the physical properties of the regenerated polymer composition to a certain level by optionally adding a fibrous filler or fibrous ground material to the mixture.

The operating temperature of the extrusion device in the melt extrusion step of the present invention is preferably 180 to 240 ° C.

At less than 180 ° C, matrix polymers such as polypropylene do not melt sufficiently and the fibrous filler may not be uniformly mixed with the matrix polymer. When it exceeds 240 ° C, the fibrous filler or matrix polymer is carbonized or denatured by high temperature. Physical properties of the regenerated polymer composition may be significantly deteriorated.

In the present invention, in addition to the recycled plastic prepared from waste plastic containing hemp fibers, the content of the matrix polymer in the recycled polymer composition can be increased by adding inexpensive plastic raw materials such as polypropylene or polyethylene in an arbitrary ratio and melt-extruding. is natural In addition to this, matrix polymers that are not compatible with each other may be mixed and present depending on each source of waste plastic, and a conventional compatibilizer may be additionally added for the purpose of improving compatibility between them. Examples of compatibilizers suitable for the present invention include maleic acid-modified polypropylene, silane-based compounds, and epoxy-modified polyvinyl compounds. In addition, the regenerated polymer composition according to the present invention may further contain various additives such as antioxidants, colorants, release agents, lubricants, light stabilizers, and rubber, and the amount of these additives depends on various factors including desired end use and characteristics. It can be adjusted and applied appropriately.

The present invention is characterized in that waste plastic to be disposed of is used as a main raw material, and a filler composed of inorganic matter is used as an auxiliary raw material, and a small amount of microwax, which is a compounding agent, is added and mixed. 3 to 5% by weight of microwax is mixed with components such as aerosil, zinc oxide (ZnO), titanium oxide (TiO 2 ), and bentonite in a total amount of 10% by weight, or a very small amount of antistatic agent is added. and mixing to extrude the waste plastic recycling molding.

Waste plastic used in the present invention is polyvinyl chloride (PVC), polystyrene (PS), ABS resin, polyacetal (POM), polyethylene (PE), polyamide (PA), nylon (NAL), nylon fiber, polypropylene (PP), acrylic, polycarbonate (PC), polyethylene terephthalate (PETP), cellulose acetate (CA), ethyl cellulose (EC), polyvinyl acetate (PVAC), etc. ; [0017] Thermosetting waste plastics such as melamine resin (MF), phenol resin (PF), urea resin (PUR), epoxy resin (EP), and polydiaryl phthalate (PVAE) are used. It includes all waste plastics obtained from all products manufactured by mixing with non-plastic materials such as metal, paper, and wood, as well as pure plastic products that are discarded.

In addition, the waste plastic is used after taking the state obtained during the waste treatment of each product and pulverizing it into small pieces of a certain size, that is, 5 to 15 mm in size and 1 to 3 mm in thickness.

The amount of waste plastic used is mixed in the range of 80 to 85% by weight based on the total weight of the object to be molded. If the amount of waste plastic is less than 80% by weight, mechanical properties such as hardness and strength of the object to be molded may be deteriorated.

In addition, along with waste plastic, microwax and graphite were added to maintain the surface gloss of the object to be molded and to supplement acid resistance, corrosion resistance and mechanical strength.

The filler used in the present invention is a mixture of two or more selected from the inorganic group consisting of serpentine, pyrophyllite, olivine, fluorite, mica (mica), graphite, bauxite, dolomite, and montmorllonite. In the process of melting and mixing various types of waste plastics with different properties, the inorganic filler enables the molding to be extruded under a uniformly distributed state, so that the mechanical properties of the molding, such as hardness and strength, are excellent. In charge of having a role, the amount of the inorganic filler is in the range of 5 to 10% with respect to the total weight of the object to be molded, and the inorganic filler is preferably pulverized to 300 to 350 mesh. , This is because the more finely pulverized the inorganic filler is, the more it can be mixed in a state of being evenly dispersed in the waste plastic melt.

A feature of the present invention is that the waste plastic is mixed with 80 to 85% by weight of the filler, 5 to 10% by weight of the binder, and 3 to 5% by weight of the microwax as a binder. The object is extruded while stirring at high speed rotation at 900 to 1000 rpm and then melting by heating at a temperature of 180 to 280 ° C.

As described above, the waste plastic is mixed in a pulverized state having a particle size of about 5 to 15 mm and a thickness of about 1 to 3 mm, and the inorganic filler is finely pulverized to 325 mesh as described above, and the binder is micro Powdered wax is used.

Microwax, the binder, has a very strong adhesiveness when melted into a liquid phase and has a property of not falling off once adhered to any material. It plays the role of a cross-linking agent that binds the plastic solution and the solution.

In addition, the microwax plays a role of increasing the bonding strength between the waste plastic solution and the unpulverized filler particles.

In addition, a mixer (Banbury mixer) is used to mix waste plastics, fillers, and microwax, and the mixing is stirred and mixed at a high speed rotation of 900 to 1000 rpm. As they are cut or pulverized into smaller pieces, they are well mixed with the fine powder filler and the powdered microwax.

In the above, it takes about 10 minutes to mix the waste plastic particles with the microwax, which is a fine powder filler and binder, at a high speed rotation of 900 to 1000 rpm.

The mixture mixed by the mixer as described above is put into a single-screw or twin-screw extruder and melted at a high temperature of 180 to 280 ° C. to extrude an object through an extrusion mold. When the melting temperature is lower than 180 ° C. Waste plastic with a higher melting point remains in a granular state, which adversely affects the physical properties of the object to be molded.

Therefore, the mixture is preferably dissolved by heating to a temperature range of 180 to 280 °C. The reason is that plastics have different melting points depending on their components. Normally, waste plastics with a low melting point melt from 180℃, and waste plastics with a high melting point completely melt at a temperature of 280℃. In the temperature range of ~280 ° C, all waste plastics are dissolved by heating to a temperature that can completely dissolve them. In addition, single-screw and twin-screw extruders extrude while mixing the dissolved mixture, so in this process, the dissolved mixture is more evenly stirred and melted. While mixing, it is extruded into an object to be molded through an extrusion mold.

On the other hand, the binder, Microwax, has a small mixing ratio of 3 to 5% by weight compared to the total weight of the object to be molded, but it is evenly dispersed and mixed with various waste plastic solutions and fine particles of inorganic fillers, so that waste plastic solutions and solutions having different properties In addition, since it serves as a crosslinking agent that strongly binds the fine particles of the filler, the extruded article has excellent mechanical hardness and strength, and the surface of the article is smooth due to the crosslinking of microwax. .

When the inorganic filler is mixed at less than 5% by weight, it is impossible to control the shrinkage coefficient of each of the waste plastics having different properties, and deformation such as distortion may occur during extrusion molding of the object to be molded, and at least 10% by weight When mixed with, there is a risk of lowering the hardness and strength, which are mechanical properties after extrusion molding of the object to be molded. Therefore, it is preferable to mix the inorganic filler in the range of 5 to 10% by weight.

Next, as a binder, components such as extruded aerosil, zinc oxide (Zno), titanium oxide (TiO 2 ), and bentonite, which are binders other than microwax, are added to the total weight of the mixture together with the microwax. It is mixed within the range of 10% by weight in total, and the binders of each component act to increase the bonding strength of the object to be molded together with the microwax.

Among the binder components, Aerosil is a powder that has been micronized to about 1 micron, and as such, since Aerosil particles are very fine, the specific surface area is very large. In addition, Aerosil particles have a structure in which silicon (Si) and oxygen (O) atoms are combined, and their refractive index is in the range of 145 to 155, and when waste plastic and microwax are dissolved, they act to promote their dispersion effect, so that the waste plastic solution and It plays a role in promoting the dispersion of the microwax solution and mixing it evenly. Therefore, the cross-linking strength of the microwax, which is a binder, is increased.

Among the binder components, zinc oxide, titanium oxide, and bentone each have caking properties, so they act to increase the cross-linking force with the waste plastic solution together with microwax. In addition, among the binder components, zinc oxide and titanium oxide have an effect of blocking ultraviolet rays.

On the other hand, the object to be molded can be extruded by adding a very small amount of antistatic agent as the filler component. 02 to 03% by weight is additionally added to the total weight (100%) of the mixture introduced into the silver extruder.

As described above, the antistatic agent added to the mixture injected into the extruder is mixed in the process of being transported and melted together with the mixture in the extruder, and the antistatic agent added to the extruder together with the mixture in this way prevents waste plastic from melting in the extruder. It is in charge of extinguishing the explosive gas generated when the gas is generated on the surface of the object to be molded, thereby preventing air bubbles from forming on the surface of the object to be extruded. indicate

The present invention comprises the steps of preparing recycled plastic by pulverizing waste plastic containing natural fiber-based filler, followed by washing and drying; preparing a pulverized fibrous product by pulverizing natural fibers, synthetic fibers, wood, or paper; Preparing a starch nanocomposite by mixing and drying ceramic nanoparticles having an average size of 2 to 20 nm with an aqueous starch solution; and melt-extruding the mixture containing the materials prepared in each step.

Waste plastics containing natural fiber-based fillers used in the present invention can be collected from various sources such as automobile interior parts, household goods, and industrial parts. Matrix polymers used in waste plastics include polypropylene, polyethylene, PVC, ABS, nylon, or polymer alloys in which these are combined. According to the present invention, the collected waste plastic is mechanically pulverized to a size of 1 to 15 nm, and the pulverized product is mixed with an excess of water in a water bath to remove impurities including paint fragments, etc., and then dried to regenerate plastic can be prepared.

The starch nanocomposite in the present invention may be prepared by mixing ceramic nanoparticles having an average size of 2 to 20 nm with an aqueous starch solution and drying them. Ceramic nanoparticles in the present invention may be used in the form of a powder or a colloidal solution. The ceramic nanoparticles may be mixed in an aqueous starch solution and mixed at the nano level by a dispersion method such as ultrasonic waves, and the starch may be attached to the surface of the nanoparticles to prevent aggregation of the nanoparticles.

In this case, a low molecular weight alcohol such as ethanol may be added to the aqueous starch solution to improve dispersion characteristics or facilitate drying.

The ceramic nanoparticle may be one of nanodiamond, nanozinc oxide, nanoaluminum oxide, nanoiron oxide, or a combination thereof. When the average size of the ceramic nanoparticles is 2 nm or less, a problem of aggregation of the nanoparticles may occur during the melt extrusion step. On the other hand, when the average size of the ceramic nanoparticles is 20 nm or more, the surface area per unit weight is greatly reduced, so the amount of ceramic nanoparticles used must be increased to supplement the physical properties of the regenerated polymer composition. As a result, the melt processability of the regenerated polymer composition deteriorates, and its manufacturing cost increases, making it difficult to achieve economic feasibility.

When the starch nanocomposite is incorporated into a mixture of waste plastic and fibrous pulverized material and melt-extruded in an extruder, the ceramic nanoparticles having an average size of 2 to 20 nm act on the molten polymer chain to change the molten state of the polymer to a non-Newtonian It can transform from a fluid to a state of behavior close to that of a Newtonian fluid, thereby increasing the compatibility between the matrix polymer and the fibrous pulverized material. In addition, a significant amount of the ceramic nanoparticles of the starch nanocomposite exist adsorbed on the surface of the fibrous filler in the regenerated polymer composition together with the starch adsorbed on the surface, and increase the affinity between the fibrous filler and the matrix polymer, so that the fibrous filler reinforcement effect can be enhanced. In addition, ceramic nanoparticles having an average size of 2 to 20 nm can function as a crystal nucleating agent by being dispersed in the matrix polymer. By causing nano-level crystallization of the matrix polymer during the cooling process after melt extrusion, the thermal and thermal properties of the regenerated polymer composition It can play a role in improving mechanical properties.

The starch nanocomposite may contain 80 to 99.9% by weight of starch and 0.1 to 20% by weight of ceramic nanoparticles. If the content of ceramic nanoparticles is lower than 0.1% by weight, the content of nanoparticles in the finally produced regenerated polymer composition is too low, and the effect of improving physical properties including improvement of melt processing properties may be insignificant. The dispersion effect of the particles may be reduced.

Natural fiber-based fillers included in the waste plastic according to the present invention include hemp, cotton, silk, pulp, and the like. However, since the content of the natural fiber-based filler in the waste plastic varies widely depending on the collection source, the waste plastic applicable to the present invention preferably has a natural fiber-based filler content of 5 to 60% by weight. For example, when the content of the natural fiber-based filler is 5% by weight or less, even if a conventional general recycling technique is applied, the physical properties are not significantly deteriorated, so the economic advantage of recycling is not great.

On the other hand, if the content of the natural fiber-based filler exceeds 60% by weight, the risk of carbonization increases during the processing process such as melt extrusion, the injection moldability is significantly lowered, and the physical properties of the extrudate due to moisture absorption during the cooling and processing process There is a problem that it is difficult to compensate for the degradation of .

The regenerated polymer composition prepared according to the present invention may be prepared by further adding a separate pulverized fibrous material to waste plastic containing a natural fiber-based filler. The fibrous pulverized product may be prepared by pulverizing natural fiber, synthetic fiber, wood, or paper into a size dispersible in the molten polymer. On the other hand, in order to manufacture a cheaper recycled polymer composition, fibrous materials may be separately separated and regenerated to prepare a pulverized fibrous material from waste automobile interior parts, waste household items, waste clothing, or discarded industrial parts.

The mixing ratio of the waste plastic and the fibrous pulverized material may be arbitrarily adjusted according to the amount of the natural fiber-based filler included in the waste plastic and the physical properties required according to the use of the recycled polymer composition. For example, it is natural that the mixing ratio of the pulverized fibrous material to the waste plastic can be arbitrarily increased as the content of the natural fibrous filler in the waste plastic decreases or when the physical properties of the recycled polymer composition require a high level of the fibrous filler content.

A recycled polymer composition may be prepared by mixing the recycled plastic, the fibrous pulverized material, and the starch nanocomposite powder prepared according to the above method in a Henschel mixer, and then melt-extruding them as strands through a conventional extrusion device. The recycled polymer composition according to the present invention may be prepared by mixing and melt-extruding only recycled plastic and starch nanocomposite. It is advantageous to stabilize the physical properties of the recycled polymer composition to a certain level by optionally adding fibrous ground material. As a preferred blending example according to this, 50 to 90% by weight of recycled plastic, 9.9 to 49.9% by weight of fibrous pulverized material, and 0.1 to 10% by weight of starch nanocomposite may be mentioned.

The operating temperature of the extrusion device in the melt extrusion step of the present invention is preferably 180 to 240 °C.

At less than 180 ° C, matrix polymers such as polypropylene do not melt sufficiently and the fibrous filler may not be uniformly mixed with the matrix polymer. When it exceeds 240 ° C, the fibrous filler or matrix polymer is carbonized or denatured by high temperature. Physical properties of the regenerated polymer composition may be significantly reduced.

In the present invention, in addition to the recycled plastic prepared from waste plastic containing natural fibers, the content of the matrix polymer in the recycled polymer composition can be increased by adding inexpensive plastic raw materials such as polypropylene or polyethylene in an arbitrary ratio and melt-extruding. is natural In addition to this, matrix polymers that are not compatible with each other may be mixed and present depending on each source of waste plastic, and a conventional compatibilizer may be additionally added for the purpose of improving compatibility between them. Examples of compatibilizers suitable for the present invention include maleic acid-modified polypropylene, silane-based compounds, and epoxy-modified polyvinyl compounds. In addition, the regenerated polymer composition according to the present invention may further contain various additives such as antioxidants, colorants, release agents, lubricants, light stabilizers, and rubber, and the amount of these additives depends on various factors including desired end use and properties. It can be adjusted and applied appropriately.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art can realize that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. you will be able to understand Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting.

1000: recycler system
10: recycler device
20: management server
30: mobile terminal

Claims (2)

In the recycler device for processing the collection, washing and crushing steps for the plastic discharged by the user,
a collection module that collects plastic discharged by the user and classifies the type of plastic;
a washing module for washing the plastics classified by the collection module by type;
a crushing module for pulverizing the plastic cleaned by the washing module and processing it into chips; and
Including; a collection module that classifies the plastic input by the user into PET and other plastics;
The collection module,
An inlet into which plastic discharged by the user is input;
a conveyor conveying the plastic input through the inlet;
It is installed on one side of the conveyor and has a built-in memory and controller to store in advance the shape of containers and cases for each material of plastic, image the object on the conveyor and compare and read it to determine the type of plastic conveyed through the conveyor. an optical scanner that determines;
a nozzle spaced apart from one end of the conveyor and supplied with air from an air sprayer;
an air injector operating when a control signal is received from the optical scanner to supply air to the nozzle;
a first collection box in which plastics other than PET are collected and installed close to one end of the conveyor; and
A second collection box in which plastic identified as PET is collected and installed farther from one end of the conveyor than the first collection box,
The conveyor,
a pair of sliding blocks;
a conveyor belt that is wound around and rotated around a rotating shaft penetrating the pair of sliding blocks and transports plastic; and
A plurality of sliding bars are provided and both ends are installed on the pair of sliding blocks, respectively;
The pair of sliding blocks,
A plurality of sliding grooves having different lengths are formed side by side in the vertical direction on mutually facing surfaces,
The sliding bar,
Pressing the conveyor belt in a horizontal direction while sliding along the sliding groove,
The plurality of sliding grooves,
The recycler device is formed in a vertical symmetrical shape with respect to the central portion of the sliding block, and is formed so that the length becomes shorter toward the central portion.

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