KR20220154281A - Recycling system of multi-layer structure waste packaging film - Google Patents

Abstract

The present invention relates to a recycling system of composite film packaging, which continuously heats and pressurizes multi-layered composite film packaging containing aluminum to melt a polymer resin contained in the composite film packaging, thereby separating and obtaining oil and aluminum respectively from the composite film packaging. The recycling system of composite film packaging according to the present invention comprises: a first extrusion processing unit physically decomposing the composite film packaging through extrusion processing to generate a first processed product; a second extrusion processing unit heating the first processed product to melt a polymer resin and then performing pressurization to generate a second processed product where the predetermined amount of oil is separated; and a third extrusion processing unit heating the second processed product to melt a polymer resin and then performing pressurization to completely separate oil component and obtain pure aluminum.

Description

Recycling system of multi-layer structure waste packaging film}

The present invention is a composite film that can be obtained by continuously heating and pressing a composite film packaging material of a multi-layer structure containing aluminum to melt a polymer resin contained in the composite film packaging material to separate oil and aluminum from the composite film packaging material. It is about a recycling system for packaging materials.

Some waste packaging materials discharged in daily life are composed of a single material, but most of them are multi-layered films made of composite materials. Food packaging materials also use plastic films such as polypropylene and polyester, and film-type packaging materials having a multi-layer structure including an aluminum layer as a main component and polyethylene or the like as an adhesive subcomponent.

The packaging film as described above includes an aluminum layer that does not pass through both air and moisture and increases the preservative power of the product to maintain a safe sanitary condition for a long time. In addition to food, the range of its use is wide, such as detergents and medicines, and its production volume will continue. It is expected that this will continue to increase.

The composite film packaging material as described above has the advantage of increasing food preservation, but various ingredients are mixed in various ratios, and the physical properties including aluminum are poor and do not decompose well. As the amount of use increases, the effect on environmental pollution In addition, recently, various studies are being conducted to recover and utilize resources used from packaging materials that are used in various ways in daily life.

For example, Korean Patent Registration No. 10-0591695, which is Document 1, relates to an apparatus and method for separating aluminum from a multi-layer composite material containing an aluminum layer. In Document 1, aluminum components are continuously separated from a composite material containing aluminum. As a device for selective separation, a pulverized material inlet into which pulverized composite materials containing aluminum components are introduced is provided at the top and a separation solution inlet at a predetermined temperature for separating the aluminum component of the pulverized material is provided at the bottom, while the outlet of the separation solution is provided. a tubular input unit provided and disposed at a predetermined angle with the horizontal plane; a tubular discharge unit connected to the inlet at a lower portion at a predetermined angle and having a pulverized product outlet through which the pulverized product fed into the pulverized product inlet of the inlet is discharged; an inlet screw installed in the inlet to transport the pulverized composite material injected into the pulverized material inlet to the lower side of the inlet at a predetermined speed; a discharge unit screw installed in the discharge unit to transport the pulverized material transferred to the lower portion of the input unit by the input unit screw to the pulverized product outlet at a predetermined speed; and a pump for supplying the separation solution from the separation solution storage tank to the separation solution inlet.

However, the device disclosed in Document 1 has a problem that the device is easily corroded as an alkali or acid hydrolysis method using an alkali or acid aqueous solution is used, and a process of separately treating the generated precipitate is necessarily accompanied There is a problem that the regeneration efficiency is low, and research on a method to compensate for this problem is needed.

Korean Registered Patent No. 10-0591695 (published date: 2006.06.20) Korean Patent Registration No. 10-0526722 (Publication date: 2005.01.14) Korean Patent Registration No. 10-0910630 (Announcement date: 2009.08.05) Korean Patent Publication No. 10-0798024 (published date: 2007.10.05) Japanese Patent Publication No. JP 2018-503733 (Publication date: 2018.02.08)

The present invention has been made to solve the problems of the prior art as described above, and continuously pressurizes and heats the composite film packaging material to thermally decompose the polymer resin component contained in the composite film packaging material to separate high-purity oil and aluminum, respectively. It is intended to provide technical information about a recycling system for composite film packaging materials that enables

In addition, the present invention is a recycling system for a composite film packaging material that physically separates each layer constituting the composite film packaging material by stretching the complex film packaging material to shorten the heating temperature and treatment time, and to separate the high-purity oil component and aluminum. It is intended to provide technical information about

The technical problems to be solved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned are clearly understood by those skilled in the art from the description below. It could be.

In order to achieve the technical problem as described above, the present invention is installed in the first hopper to which the composite film packaging material is supplied, the lower end of the first hopper, and the first inlet is formed at one end to supply the composite film packaging material from the first hopper. A film packaging material is accommodated inside, a perforated tube is installed on one side of the inside, a first recovery hole is formed on one lower side to discharge oil separated from the composite film packaging material, and a first treatment material is discharged. A first transfer cylinder, A first transport screw installed inside the first transport cylinder and rotated by driving a driving motor to transfer the composite film packaging material forward of the first transport cylinder to generate the first treatment material, and the first transport cylinder A first extrusion processing unit including a first heating means installed on one side of the first heating means for heating the mixture transferred through the first transfer cylinder to a temperature of 100 to 300 °C; Connected to the first transfer cylinder through a transfer passage, a second recovery hole for accommodating the first treated material supplied from the first extrusion processing unit and discharging oil separated from the first treated material is formed at one side of the lower part. And, a first outlet hole for discharging the gas component included in the mixture is formed on one side of the upper part, and a second transfer cylinder for discharging the second treated material is installed on one side of the second transfer cylinder through the second transfer cylinder. A first heating means for heating the mixture to be transferred to a temperature of 100 to 300 ° C. It is installed inside the second transfer cylinder and rotates by driving a driving motor to transfer the mixture to the front of the second transfer cylinder to transfer oil and a second extrusion processing unit including a second transfer screw generating the second processing product; It is connected to the second transfer cylinder through a transfer passage, accommodates the second processing material supplied from the second extrusion processing unit, and has a third recovery hole formed at one side of the lower part for discharging the oil separated from the second processing material. A second outlet hole is formed on one side of the upper portion for discharging gas components included in the second treatment material, and a third outlet is provided at the other end to discharge aluminum, and a third transfer cylinder is installed on one side of the third transfer cylinder. A second heating means for heating the second processing material transferred through the third transfer cylinder to a temperature of 100 to 400 ° C., installed inside the third transfer cylinder and rotated by a driving motor to perform the second treatment It provides a recycling system for a composite film packaging material comprising a; third extrusion processing unit including a third transfer screw that transfers water to the front of the third transfer cylinder to produce oil and aluminum.

The system for recycling the composite film packaging material further includes a stretching unit that stretches the composite film packaging material and supplies the stretched composite film packaging material to the hopper, wherein the stretching unit is fixed to a body frame and the body frame. A fixed panel having a plurality of first friction protrusions and first inner grooves formed on one surface, installed on the front surface of the fixed panel, a plurality of second friction protrusions and second inner grooves formed on one surface, operation of the operating motor Including a movable panel forming a structure in which the second friction protrusion is inserted into the first inner groove by sequentially pivoting in up, down, front, and rear directions by the fixing panel and the accommodation formed by the movable panel The composite film packaging material supplied to the space is stretched left and right by pressing and then stretched up and down by the first friction protrusion and the second friction protrusion to create a stretched composite film packaging material, and the resulting stretched composite film A packaging material may be supplied to the hopper.

The recycling system of the composite film packaging material may further include a crushing unit that pulverizes the composite film packaging material to a predetermined size to generate pulverized products and supplies the generated pulverized products to the hopper.

According to a preferred embodiment of the present invention, the first extrusion processing unit further comprises a compression unit installed in the first transfer cylinder to increase the recovery rate of the oil, the compression unit, the first transfer cylinder A fixed ring coupled to the inner circumferential surface of the front end of the first transfer cylinder and forming a structure in which the diameter of the hole gradually decreases in the direction toward the front end of the first transfer cylinder to gradually reduce the inner diameter of the front end of the first transfer cylinder, the outer circumferential surface of the fixed ring A pressure plate for shielding the movement path of the first treatment material formed inside the first transfer cylinder by surface contact with, a coupling shaft for fixing the pressure plate inside the front end of the first transfer cylinder, and coupled along an outer circumferential surface of the coupling shaft, The pressure plate includes an elastic pressurizing member for supporting the moving passage of the first treatment material formed inside the first transfer cylinder to shield and pressurize the first treatment material supplied to the front end of the first transfer cylinder to separate the oil. structure can be formed.

The recycling system of the composite film packaging material further includes a combustion chamber connected to the first outlet hole and the second outlet hole to receive and burn the gas discharged from the second transfer cylinder and the third transfer cylinder. can include

In the recycling system of the composite film packaging material according to the present invention, the first extrusion processing unit extrudes the composite film packaging material, heats and presses the composite film packaging material, melts the polymer resin contained in the composite film packaging material, and separates the oil. Create a treated material, heat the first treated material through the second extrusion processing unit to thermally decompose the polymer resin to generate a second treated material from which a certain amount of oil component is separated, and generate the second treated material through the third extrusion processing unit It is possible to form a structure that melts the polymer resin by heating and then pressurizes to completely separate the oil component and obtain pure aluminum and oil derived from the polymer resin.

In addition, the composite film packaging material is thermally decomposed by heating in the process of continuously moving along the space between the spirals of the conveying screw according to the rotation of the conveying screw, and oil generated through a decrosslinking reaction is discharged, and finally aluminum is separated and discharged. The structure is formed, so high-speed processing is possible and mass production is possible.

In addition, as the composite film packaging material continuously moves inside the transfer cylinder to separate oil and aluminum, it is advantageous to control and maintain the atmosphere including the reaction pressure and reaction temperature inside the transfer cylinder.

1 is a conceptual diagram showing a recycling system 1 for a composite film packaging material according to the present invention.
2 is a conceptual diagram showing a stretching unit 15 and a hopper 11 of a first extrusion unit provided in a recycling system 1 for a composite film packaging material according to the present invention.
3 is a conceptual diagram showing (a) a friction panel 152 and (b) a moving panel 153 of the stretching unit 15 provided in the recycling system 1 for a composite film packaging material according to the present invention.
4 is an upper cross-sectional view showing (a) a friction panel 152 and (b) a moving panel 153 of the stretching unit 15 provided in the recycling system 1 for a composite film packaging material according to the present invention.
5 is a conceptual diagram showing a first extrusion processing unit in a state in which a compression unit is installed according to a preferred embodiment of the present invention.
6 is a conceptual diagram illustrating a second extrusion processing unit in a state in which a gas discharge member is installed according to a preferred embodiment of the present invention.
7 is a real image of a composite film packaging material introduced into the recycling system 1 for a composite film packaging material according to the present invention.
8 is a real image of aluminum obtained after extrusion using the recycling system 1 of the composite film packaging material according to the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, since the description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiment can be changed in various ways and can have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, the scope of the present invention should not be construed as being limited thereto.

The meaning of terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from another, and the scope of rights should not be limited by these terms. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element. It should be understood that when an element is referred to as “connected” to another element, it may be directly connected to the other element, but other elements may exist in the middle. On the other hand, when an element is referred to as being “directly connected” to another element, it should be understood that no intervening elements exist. Meanwhile, other expressions describing the relationship between components, such as “between” and “immediately between” or “adjacent to” and “directly adjacent to” should be interpreted similarly.

Singular expressions should be understood to include plural expressions unless the context clearly dictates otherwise, and terms such as “comprise” or “having” refer to a described feature, number, step, operation, component, part, or It should be understood that it is intended to indicate that a combination exists, and does not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Terms defined in commonly used dictionaries should be interpreted as consistent with meanings in the context of related art, and cannot be interpreted as having ideal or excessively formal meanings unless explicitly defined in the present invention.

Oil obtained by melting and separating from the composite film packaging material through heating and pressurization using the recycling system of the composite film packaging material according to the present invention is produced by melting one or more polymer resins forming the film layer of the composite film packaging material. , The resulting oil may include a heavy oil having 21 or more carbon atoms, a middle oil having 12 to 20 carbon atoms, and a light oil component having 6 to 11 carbon atoms. The resulting oil can be purified and separated in a conventional manner and used for industrial fuel oil, or it can be used as a raw material for petrochemical products through synthetic resination.

Hereinafter, the present invention will be described in detail.

1 is a conceptual diagram showing a recycling system for a composite film packaging material according to the present invention.

Referring to FIG. 1, the recycling system 1 according to the present invention has a structure including a first extrusion processing unit 10, a second extrusion processing unit 20, a third extrusion processing unit 30 and a gas processing unit 40. 1 to form a composite film packaging material having a multi-layer structure by passing the composite film packaging material through the first to third extrusion processing units 10, 20, and 30 in which the oxygen concentration is maintained constant or the vacuum state is maintained. It is possible to form a structure in which one or more kinds of polymer resin components are completely melted to form oil, and the oil is separated to obtain oil and aluminum, respectively.

First, the composite film packaging material introduced into the recycling system 1 means to have a multi-layer structure in which an aluminum layer is laminated and laminated together with a polymer resin layer for the purpose of long-term storage and high quality, and the polymer resin layer is polypropylene (polypropylene). , PP), polyethylene (PE), polyethylene terephthalate (PET), highly crystalline polypropylene (HCPP), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), high density polyethylene (HDPE), polyamide (nylon), polystyrene (PS), acrylonitrile-butadiene-styrene (ABS), polyvinyl chloride (PVC), polyvinydene chloride (PVDC), cellophane (cellophane), cyclic olefin copolymer (COC), or may be formed using a polymer resin containing a mixture thereof.

For example, the composite film packaging material may be a food packaging material such as snacks, coffee mixes, etc., such a packaging material is formed with a polyethylene resin layer or a polypropylene resin layer having a thickness of 100 to 500 μm, and a 10 to 50 μm thick It has a structure in which an aluminum layer is formed, which prevents oxygen permeation and has an excellent UV blocking effect.

Looking in detail at the structure and function of the recycling system 1 according to the present invention, the first extrusion processing unit 10, the hopper 11, the first transfer cylinder 12, the first transfer screw 13 and the first It includes a heating means 14, which physically decomposes the composite film packaging material through pressurization, and firstly melts the polymer resin component in the composite film packaging material through heating at a temperature of 100 to 300 ° C. to recover a certain amount of oil, A first treated material is generated, and the first treated material lowers the bonding strength of each layer forming the composite film packaging material, so that the recovery of aluminum and oil components can be promoted.

Specifically, the supply hopper 11 is connected to the first inlet 121 of the first transfer cylinder 12 and serves to supply the composite film packaging material into the first transfer cylinder 12 .

The first transfer cylinder 12 has a first inlet 121 formed at one end to receive and accommodate the composite film packaging material supplied from the supply hopper 11, and a first outlet (not shown) at the other end. The first treated material is discharged by driving the first conveying screw 13 so that the first treated material is supplied to the second extrusion processing unit 20 through the first connecting passage 124 . The first transfer cylinder 12 receives a complex film packaging material to generate a first treatment material, and forms an accommodation space therein to accommodate the first transfer screw 13, thereby providing the first transfer screw 13 The composite film packaging material is supplied by the rotation of so that the first treatment material is generated.

In addition, the first transfer cylinder 12 may form a structure in which the first recovery hole 122 is formed on one side of the lower portion to discharge the oil component included in the composite film packaging material to the outside of the first transfer cylinder 12. have.

In addition, the first transfer cylinder 12 has a perforated tubular body 123 in which the first transfer screw 13 and the first processing object are accommodated, and is transported by the first transfer screw 13. 1 Formation of a structure in which the oil remaining in the treated material is discharged through a plurality of holes H formed in the perforated tube body 123 and discharged to the outside of the first transfer cylinder 12 through the first recovery hole 122 The perforated tube body may be formed along the longitudinal direction on the inner surface of the first transfer cylinder 12, and may be installed only on the front portion of the first transfer cylinder 12.

The first transfer screw 13 is installed inside the first transfer cylinder 12, rotates by driving a driving motor, and transports the composite film packaging material to the front of the first transfer cylinder 12 for extrusion. It serves to first separate oil from the composite film packaging material by first separating oil from the composite film packaging material and then discharging the first treated product, and physically decomposes the composite film packaging material to reduce the bonding strength of each layer forming the composite film packaging material. It plays a role in promoting the recovery of the aluminum layer and oil components. The rotational speed of the first conveying screw 13 can be adjusted by a user's manipulation, thereby controlling the conveying speed of the mixture.

The first heating means 14 is installed on one side of the first transfer cylinder 12, and heats the composite film packaging material supplied to the inside of the first transfer cylinder 21 to a temperature of 100 to 300 ° C. The polymer resin component contained in is melted to produce oil, and the oil component is discharged to the outside of the second transfer cylinder 21 through the first recovery hole 122 formed at least one in the lower part of the first transfer cylinder 21 And, the solid component of the first treated material may remain inside the first transfer cylinder 12 to form a structure such that the first treated material is discharged through a first outlet (not shown) located at the other end. Preferably, the first heating means can heat the inside of the first transfer cylinder 12 to a temperature of 150 to 250 °C.

On the other hand, the second extrusion processing unit 20 has a structure including a second transfer cylinder 21, a second transfer screw 22 and a second heating means 23, and heats the first processed material to have a multi-layer structure. The polymer resin forming each layer of the composite film packaging material is melted and then pressurized using the second transfer screw 22 so that the oil is separated from the first treated material to form a second treated material in which the oil is primarily separated. can make it

Specifically, the second transfer cylinder 21 has one end, that is, a second inlet (not shown) connected to the first discharge port (not shown) and the first connection passage 124 to the rear portion of the second transfer cylinder. ) Is formed to receive the first treatment material and accommodate it therein, and a second outlet (not shown) is provided at the other end, that is, the front part of the second transfer cylinder, so that the second treatment material is supplied to the third extrusion processing unit ( 30) can be formed.

In addition, the second transfer cylinder 21 has a second recovery hole 211 formed on one side of the lower portion to form a structure for discharging oil discharged from the first treated material to the outside of the second transfer cylinder 21. In addition, a first outlet hole 212 for discharging gas components included in the first treatment material may be formed at one side of the upper portion to form a structure for discharging gas generated by heating to the outside.

In addition, the second transfer cylinder 21 may additionally have a perforated tube body having the same structure as that installed inside the first transfer cylinder 12, and a plurality of perforated holes H of the perforated tube body may be provided. It is possible to form a structure in which oil is discharged through and discharged to the outside of the second transfer cylinder 21 through a second recovery hole 211 to be described later.

The second transfer screw 22 is installed inside the second transfer cylinder 21 and is rotated by driving a driving motor to pressurize and transfer the mixture to the front of the second transfer cylinder 21 for second processing. allow water to be created.

The second heating means 23 is installed on one side of the second transfer cylinder 21, and heats the first treated material supplied to the inside of the second transfer cylinder 21 to a temperature of 100 to 300 ° C. The polymer resin component contained in is melted to generate oil, and the oil component is discharged to the outside of the second transfer cylinder 21 through one or more second recovery holes 211 formed at the bottom of the second transfer cylinder 21 and the second treated material, which is a solid component, may remain inside the second transfer cylinder 21 and form a structure so that the second treated material is discharged through a second outlet (not shown) located at the other end.

When the heating temperature of the second extrusion processing unit 20 is less than 100 ° C., it is difficult to recover the oil component, and when it exceeds 300 ° C., there is a concern that economic efficiency may decrease. Preferably, the second extrusion processing unit 20 may heat the inside of the second transfer cylinder to a temperature of 250 to 300 °C.

The first outlet hole 212 is connected to the gas discharge pipe and supplies recovered gas through a supply hole 225 formed at a point adjacent to the second hopper 21 of the second transfer cylinder 21 to supply the second It may be configured to additionally perform the reaction by the transfer screw 22, or may be configured to be completely combusted by being piped to a combustion chamber of the gas processing unit 40 to be described later. A supply pump P is installed in each of the gas discharge pipes to control gas supply to the supply hole of the second transfer cylinder 23 or to control driving to supply gas to the gas processing unit 40 .

In the second extrusion processing unit 20 having the above structure, the polymer resin included in the first treated material is pressurized and melted in the area where the first treated material is supplied, and is transferred through the second transfer screw 22. As the polymer resin component of the first treated material is concentrated between the spirals of the second transfer screw 22 in the reaction area and melted and reacted, the polymer resin is melted in the composite film packaging material and separated in the form of oil, and the second transfer screw 22 Then, the oil is separated by pressurization and the second treated material is discharged through a second discharge port (not shown).

On the other hand, the third extrusion processing unit 30 includes a third transfer cylinder 31, a third transfer screw 32, and a third heating means 33 to process the second process supplied from the second extrusion processing unit 20. It receives water and serves to separate oil and aluminum included in the second treatment material, and for this purpose, the third hopper 31, the third transfer cylinder 31, the third transfer screw 32 and the third It has a structure including a heating means (33).

Specifically, the third transfer cylinder 31 is connected to the second transfer cylinder 21 through a second connection passage 214 to treat the second treatment material supplied from the second extrusion processing unit 20, which will be described later. It can be supplied by 3 transfer cylinders (31).

The third transfer cylinder 31 has a third inlet (not shown) formed at one end to receive the second treatment material supplied from the second extrusion processing unit 20 therein, and a third outlet at the other end ( (not shown) may be provided to form a structure for discharging aluminum from which oil is completely separated from the second treatment material. The third transfer cylinder 31 has a third recovery hole 311 formed on one side of the lower portion to form a structure for discharging the oil component included in the second treatment material to the outside of the third transfer cylinder 31, , A second outlet hole 312 for discharging gas components included in the mixture is formed on one side of the upper portion to form a structure for discharging gas components generated inside the third transfer cylinder 31 by heating to the outside. can

In addition, the third transfer cylinder 31 may additionally have a perforated tube body having the same structure as that installed inside the first transfer cylinder 12, and a plurality of perforated holes H of the perforated tube body may be provided. It is possible to form a structure in which oil is discharged through and discharged to the outside of the third transfer cylinder 31 through a third recovery hole 311 to be described later.

The third transfer screw 32 is installed inside the third transfer cylinder 31 and rotates by driving a driving motor to position aluminum included in the second processing material in front of the third transfer cylinder 31. It can be transported to a third outlet (not shown) to be.

The third heating means 33 is installed on one side of the third transfer cylinder 31 and heats the second treated material supplied to the inside of the third transfer cylinder 31 to a temperature of 100 to 400 ° C for the second treatment. A structure in which a specific polymer resin component included in water is completely melted and discharged to the outside of the third transfer cylinder 31 through the third recovery hole 311 may be formed. The third extrusion processing unit 30 maintains the temperature of the third transfer cylinder 31 at 100 to 400° C. so that the oil component can be completely separated from the second treated material and aluminum can be recovered. When the heating temperature of the third extrusion processing unit 30 is less than 100 ° C, it is difficult to completely melt the oil, and when it exceeds 400 ° C, aluminum is oxidized and it is difficult to recover pure aluminum. Preferably, the third extrusion processing unit 30 may be heated to a temperature of 300 to 350 °C.

The third transfer cylinder 31 may have a structure in which a second outlet hole 312 is formed through one side of the upper portion, and is included in the second treatment material that is rotated and transferred according to the driving of the third transfer screw 32. A structure for discharging gas to the outside can be formed in the polymer resin component.

Of course, the compression ratio of the first to third transfer screws 13, 22, and 32 can be adjusted by adjusting the diameter of the rotation shaft forming the transfer screw, the helical pitch interval, and the like.

In particular, in the first transfer screw 13, the outer diameter of the rotation shaft of the first transfer screw 13 gradually increases in the direction toward the front end of the first transfer cylinder 12, and the first transfer screw 13 and the perforated pipe body 123 As a result, the inner accommodation space is narrowed so that a structure for separating oil by compressing the first treated material may be formed. Alternatively, the first transfer screw 13 reduces the distance between the transfer blades of the first transfer screw 13 in the direction toward the front end of the first transfer cylinder 12, that is, the pitch interval so that the first transfer screw ( 13) and the perforated tube body 123, the inner accommodation space is narrowed so that the first treated material is compressed so that the oil can be easily separated.

In addition, a compression unit having the same structure as the compression unit 16 installed inside the first transfer cylinder 12 may be additionally installed in the second transfer cylinder 21 and the third transfer cylinder 31, respectively. , but is not limited thereto.

On the other hand, the gas processing unit 40 is connected to the first outlet hole 212 and the second outlet hole 312, respectively, and the gas discharged from the second transfer cylinder 21 and the third transfer cylinder 31 It is possible to form a structure that prevents harmful gases from being discharged to the outside, including a combustion chamber 41 for receiving and burning.

The recycling system 1 for a composite film packaging material according to the present invention including the first to third extrusion processing units 10, 20, and 30 as described above uses electricity to drive a heating means and a combustion chamber for gas treatment. It can be implemented by introducing a heating wire, an electric burner, etc. implemented using a device that generates a heat source by supplying to, but is not limited thereto.

Meanwhile, FIG. 2 is a conceptual diagram showing a stretching unit 15 and a hopper 11 of a first extrusion unit provided in the aluminum-containing composite film packaging material according to the present invention, and FIG. 3 is an aluminum-containing composite film packaging material according to the present invention. It is a conceptual diagram showing (a) the friction panel 152 and (b) the moving panel 153 of the stretching processing unit 15 provided in, and FIG. 4 is a stretching processing unit provided in the aluminum-containing composite film packaging material according to the present invention ( 15) is an upper cross-sectional view showing (a) the friction panel 152 and (b) the moving panel 153.

2 to 4, the recycling system 1 of the composite film packaging material according to the present invention is installed on the upper part of the hopper 11 to stretch the composite film packaging material, and the composite film packaging material subjected to the stretching treatment is returned to the hopper 11. It may further include an extension processing unit 15 so as to be supplied to. In the composite film packaging material stretched through the stretching unit 15, the average length of each layer forming the multi-layered composite film packaging material is stretched by 110 to 200% through the stretching process, thereby reducing the bonding strength of each layer formed of different materials. This makes it easier to separate each layer compared to the packaging material before stretching treatment, thereby lowering the heating temperature of the second extrusion processing unit 20 and the third extrusion processing unit 30 and shortening the processing time, as well as preventing oxidation of aluminum. and can increase oil and aluminum recoveries.

The elongation processing unit 15 having the same function as described above is fixed to the body frame 151 and includes a fixed panel 152 having a plurality of first friction protrusions 152a and first internal grooves 152b formed on one surface, It is installed on the front of the fixed panel 152, a plurality of second friction protrusions 153a and a second inner recess 153b are formed on one surface, and up, down, front, and back by the operation of the operating motor 154 It has a structure including a movable panel 153 forming a structure in which the second friction protrusion 153a is inserted into the first inner groove 152b by sequentially pivoting in the same direction.

More specifically, the stretching unit 15 has a structure including a body frame 151, a fixed panel 152, a moving panel 153 and an operating motor 154.

The body frame 151 has an accommodation space formed therein to accommodate the fixed panel 152 and the movable panel 153, and serves to provide a wall surface to which the fixed panel 152 can be fixed. A discharge hole 151a is formed through the lower portion of the body frame 151 so that the composite film packaging material stretched by the fixed panel 152 and the moving panel 153 can be supplied to the hopper 11 .

The fixing panel 152 is a plate-like member having a certain thickness fixed to one side of the wall surface of the body frame 151, and a plurality of first friction protrusions 152a are formed on one surface, and each first friction protrusion 152a is Each has a structure in which a plurality of first internal grooves 152b are formed at regular intervals.

The fixed panel 152 is provided with a hot wire 152c connected to a hot wire heating means H therein, so that the composite film packaging material supplied to the receiving space formed by the fixed panel 152 and the moving panel 153 is 50 to 200 It can be heated at a temperature of ° C., thereby increasing the elongation of the composite film packaging material.

The movable panel 153 is a plate-like member of a certain thickness installed on the other side of the fixed panel 152, and is inserted into the groove formed between the first friction protrusions 152a formed on the fixed panel 152. A plurality of second friction protrusions 153a are formed, and each second friction protrusion 153a has a structure in which a plurality of second inner grooves 153b are formed at regular intervals.

The movable panel 153 has a connection bush CB formed thereon, and the connection bush CB is connected to the flywheel FW installed on the top of the body frame 151 by an eccentric shaft ES. It is installed in the inner accommodation space of the frame 151. An operating motor 155 is installed on the other side of the moving panel 153, one end of a trailing arm TA is installed on one side of the side of the moving panel 153, and the other end of the trailing arm TA is an operating motor. 155, the movable panel 153 rotates sequentially in the up, down, forward, and rear directions by the eccentric rotation by the eccentric shaft ES, and the fixed panel 152 and the movable panel 153 After compressing the composite film packaging material supplied to the formed receiving space, shear force is applied so that the composite film packaging material introduced into the first inner groove 152b and the second inner groove 153b forms the first friction protrusion 152a and the second inner groove 152a. It is stretched by the friction protrusion 153a, and thus, the composite film packaging material may be stretched left and right in a zigzag shape by pressing, and then stretched up and down to subject the composite film packaging material to stretching.

In addition, the fixed panel 152 and the movable panel 153 may each form a structure gently curved toward the front side to enhance the shearing force of the fixed panel 152 and the movable panel 153 .

The stretching unit 15 having the structure as described above stretches the composite film packaging material having a multi-layer structure formed of different materials through the stretching process to reduce the bonding strength of each layer, so that the separation of each layer is easier than the packaging material before the stretching process. It is possible to lower the heating temperature of the first to third extrusion processing units 10, 20 and 30 and shorten the processing time, as well as to prevent oxidation of aluminum and increase the recovery rate of oil and aluminum.

The stretching unit 15 further includes an upper hopper 155 installed on the upper part of the body frame 151 to supply the composite film packaging material to the receiving space formed between the fixed panel 152 and the moving panel 153. can do.

On the other hand, the recycling system 1 of the composite film packaging material according to the present invention pulverizes the composite film packaging material to a certain size to generate a pulverized product, supplies the generated pulverized product to the hopper to lower the heating temperature, and shortens the heating time. It can be configured to further include a crushing unit that can be reduced, and the crushing unit serves to crush the composite film packaging material into a certain size (10 to 50 mm), a cutting blade is installed on the outer circumferential surface, and the rotation of the rotary motor It can be implemented using a crushing device equipped with a pair of cutting screws that rotate and crush the composite film packaging material.

On the other hand, in the recycling system 1 of the composite film packaging material according to the present invention, the first to third extrusion processing units 10, 20, and 30, and the first to third recovery holes 122, 211, and 311 are connected to pipes, respectively. It may be configured to further include storage tanks 16, 24, and 34 for collecting and storing the discharged oil to separate and store oil generated by melting the polymer resin in the composite film packaging material.

In addition, the first extrusion processing unit 10 further includes a compression unit 16 installed inside one end of the first transfer cylinder 12 to increase the recovery rate of the oil component contained in the first treatment material. This is because the first extrusion processing unit 10 first melts the composite film packaging material, so that excess oil is separated compared to the second extrusion processing unit 20 and the third extrusion processing unit 30 .

As shown in FIG. 5 , the compression unit 16 has a structure including a fixing ring 161 , a pressure plate 163 , a coupling shaft 165 and an elastic pressure member 167 .

Specifically, the fixing ring 161 is coupled to the inner circumferential surface of the front end of the first transfer cylinder 12 to reduce the inner diameter of the front end of the first transfer cylinder 12 by driving the first transfer screw 13. It serves to reduce the conveying path of the first treated material supplied to the front end of the first conveying cylinder 12 . The fixing ring 161 may form a structure in which the first workpiece is pressed by the fixing ring 161 by gradually decreasing the diameter of the hole in the direction toward the front end of the first transfer cylinder 12 .

The pressure plate 163 comes into surface contact with the outer circumferential surface of the fixing ring 161 and serves to shield the inner front end of the first transfer cylinder 12, that is, the front movement passage through which the first processing object moves. It may have a structure in which the diameter gradually increases in a direction toward the front end of the first transfer cylinder 12 to correspond to the shape of (161).

The coupling shaft 165 serves to fix the pressing plate 163 to the inside of the front end of the first transfer cylinder 12, and the elastic pressing member 167 is a spring-shaped member and covers the outer circumferential surface of the coupling shaft 165. coupled along, the pressure plate 163 supports to shield the front end of the first transfer cylinder 12, pressurizes the first treatment material supplied to the front end of the first transfer cylinder 12, and It serves to increase the recovery rate of the oil contained in the first treated material by forming a structure for pressurizing and separating the oil.

In addition, the first extrusion processing unit 10 further includes a pressure separation member 125 installed on one side of the inside of the first connection passage 124 to pressurize the first treatment material so that the first treatment material is included in the first treatment material. It is also possible to form a structure that effectively separates oil.

Specifically, the pressure separation member 125 includes a pair of pressure rollers R1 and R2 connected to a power motor that receives power separately and rotates through a connecting shaft and rotates, and the pressure rollers R1 and R2 rotate. When the first treatment material is supplied from the upper part, the pressure rollers R1 and R2 rotate to press the first treatment material to separate the oil contained in the first treatment material, and the oil is further separated from the first treatment material. It is possible to form a structure for supplying to the second transfer cylinder 21 to promote separation of the oil contained in the first treated material (see FIG. 5).

On the other hand, the gas processing unit 40 provided in the recycling system 1 of the composite film packaging material according to the present invention includes the first outlet 212 and the second extrusion processing unit 20 and the third extrusion processing unit 30 2 may be configured to additionally include a gas discharge member 43 installed in each outlet hole 312 to control gas discharge, and the gas discharge member 43 is the second transfer cylinder 21 or the third transfer It is possible to form a structure in which oil components and solid components are prevented from being discharged from the inside of the cylinder 31 and only gas formed inside the cylinder is discharged. The gas discharge members 43 installed in the second transfer cylinder 21 and the third transfer cylinder 31 may each have the same structure.

As shown in FIG. 6, taking the gas discharge member 43 installed in the second transfer cylinder 21 as an example, the gas discharge member 43 includes a gas discharge cylinder 431, a gas discharge screw 432 ), a gas discharge pipe 433, a level sensor 434, and a control unit (not shown) may be used.

The gas discharge cylinder 431 forms an accommodation space therein to accommodate the gas discharged from the second transfer cylinder 21 through the first outlet hole 212, and a connection hole 4311 is formed on one side to discharge the gas. can induce

The gas discharge screw 432 is installed inside the gas discharge cylinder 431 and is equipped with a drive motor that rotates by receiving power separately so that the gas discharged from the second transfer cylinder 21 can move by rotation drive. It serves to discharge gas by forming a passage and re-supply oil and solid components of the first treated material or the second treated material to the inside so that the oil and solid components are not discharged to the outside of the second transfer cylinder 21.

One side of the gas discharge pipe 433 is connected to the connection hole 4311 so that gas can be supplied and discharged through the connection hole 4311, and the other side is connected to the combustion chamber 41 to discharge the gas to the combustion chamber. It is possible to form a structure that supplies and burns.

In addition, the gas discharge pipe 433 is provided with one or more supply pumps P and discharged from the second transfer cylinder 21 to a portion adjacent to the first connection passage 124 in the second transfer cylinder 21. It is also possible to form a structure that reduces energy consumption generated during heating by supplying gas so that the gas generated by being heated to a high temperature is supplied together with the first processing object. To this end, the gas discharge pipe 433 has a It may have a structure equipped with a control valve to control the supply.

The level sensor 434 is formed on one side of the inner circumferential surface of the first outlet hole 212 and serves to detect the level of oil and the second treatment material.

A control unit (not shown) is connected to the gas discharge screw 432, the level sensor 434, and the driving pump P to control the driving of the gas discharge screw 432, and the level sensor 434 controls the operation of the gas discharge screw 432. 2 detects the level of oil and the second treatment material generated when gas is generated in the transfer cylinder 21, and when the inflow of oil and the second treatment material is detected by the level sensor 434, the gas discharge screw 432 is driven to remove the oil And pushing the second treatment material into the second transfer cylinder 21, controlling the gas generated inside the second transfer cylinder 21 to be discharged, and controlling the operation of the driving pump P to It may be controlled to supply the gas discharged from the second transfer cylinder 21 to a portion adjacent to the first connection passage 124 in the second transfer cylinder 21 .

In particular, the gas discharge cylinder 431 may have a structure in which one or more protruding protrusions 4313 of a tapered shape whose diameter gradually decreases downward protrude along the inner circumferential surface. Accordingly, the gas discharge screw 432 It is possible to form a structure in which solid components or oil are prevented from being discharged to the outside of the second transfer cylinder 21 by rotation of ) and gas inside the second transfer cylinder 21 can be effectively discharged.

Meanwhile, the recycling system 1 according to the present invention may further include a scrap washing unit and a scrap storage unit to form a structure for washing the separated aluminum and dividing and storing the washed aluminum.

Therefore, as described above, the recycling system of the composite film packaging material according to the present invention having a structure including the first to third extrusion processing units 10, 20, and 30, in the composite film packaging material of the form shown in FIG. The oil can be separated and the aluminum as shown in FIG. 8 can be separated.

Specifically, the system for recycling the composite film packaging material according to the present invention extrudes the composite film packaging material through the first extrusion processing unit, heats and presses the composite film packaging material, melts the polymer resin contained in the composite film packaging material, and separates the oil. A first treatment product is generated, and the first treatment product is heated through the second extrusion processing unit to thermally decompose the polymer resin to generate a second treatment product from which a certain amount of oil component is separated, and the second treatment product is generated through the third extrusion processing unit. The treated material can be heated to melt the polymer resin and then pressurized to completely separate the oil component and form a structure that allows pure aluminum and oil derived from the polymer resin to be obtained.

In addition, the composite film packaging material is thermally decomposed by heating in the process of continuously moving along the space between the spirals of the conveying screw according to the rotation of the conveying screw, and oil generated through a decrosslinking reaction is discharged, and finally aluminum is separated and discharged. The structure is formed, so high-speed processing is possible and mass production is possible.

In addition, as the composite film packaging material continuously moves inside the transfer cylinder to separate oil and aluminum, it is advantageous to control and maintain the atmosphere including the reaction pressure and reaction temperature inside the transfer cylinder.

Detailed descriptions of the preferred embodiments of the present invention disclosed as described above are provided to enable those skilled in the art to implement and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the scope of the present invention. For example, those skilled in the art may use each configuration described in the above-described embodiments in a way of combining each other. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. Accordingly, the above detailed description should not be construed as limiting in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit citation relationship in the claims may be combined to form an embodiment or may be included as new claims by amendment after filing.

1: Recycling system for composite film packaging
10: first extrusion processing unit
11 : Hopper
12: first transfer cylinder
13: first transfer screw
15: stretching unit
20: second extrusion processing unit
21: second transfer cylinder
22: second transfer screw
23: first heating means
30: third extrusion processing unit
31: third transfer cylinder
32: third transfer screw
33: second heating means

Claims (5)

A first hopper to which the composite film packaging material is supplied, installed at the lower end of the first hopper, and a first inlet is formed at one end to accommodate the composite film packaging material supplied from the first hopper therein, and a perforated tube is formed on one side of the inside. A first recovery hole for discharging oil separated from the composite film packaging material is formed on one side of the lower portion, and a first transfer cylinder for discharging the first treated material is installed inside the first transfer cylinder to drive the driving motor. A first transport screw that is rotated by and transported to the front of the first transport cylinder to transport the composite film packaging material to generate the first treatment material, and a first transport screw installed on one side of the first transport cylinder and transported through the first transport cylinder a first extrusion processing unit including a first heating means for heating the mixture to a temperature of 100 to 300 °C;
Connected to the first transfer cylinder through a transfer passage, a second recovery hole for accommodating the first treated material supplied from the first extrusion processing unit and discharging oil separated from the first treated material is formed at one side of the lower part. And, a first outlet hole for discharging the gas component included in the mixture is formed on one side of the upper part, and a second transfer cylinder for discharging the second treated material is installed on one side of the second transfer cylinder through the second transfer cylinder. A second heating means for heating the transferred mixture to a temperature of 100 to 300 ° C., installed inside the second transfer cylinder and rotated by the drive of the driving motor, transfers the mixture to the front of the second transfer cylinder, and oil and a second extrusion processing unit including a second transfer screw generating the second processing product; and
It is connected to the second transfer cylinder through a transfer passage, accommodates the second processing material supplied from the second extrusion processing unit, and has a third recovery hole formed at one side of the lower part for discharging the oil separated from the second processing material. A second outlet hole is formed on one side of the upper portion for discharging gas components included in the second treatment material, and a third outlet is provided at the other end to discharge aluminum, and a third transfer cylinder is installed on one side of the third transfer cylinder. and a third heating means for heating the second treatment material transported through the third transfer cylinder to a temperature of 100 to 400° C., installed inside the third transfer cylinder and rotated by a driving motor to perform the second treatment. A recycling system for a composite film packaging material comprising: a third extrusion processing unit including a third transfer screw that transfers water to the front of the third transfer cylinder to produce oil and aluminum. According to claim 1,
Further comprising a stretching treatment unit for stretching the composite film packaging material and supplying the stretched composite film packaging material to the hopper,
The stretching unit,
body frame,
A fixed panel fixed to the body frame and having a plurality of first friction protrusions and a first inner groove formed on one surface;
It is installed on the front surface of the fixed panel, a plurality of second friction protrusions and a second inner groove are formed on one surface, and sequentially pivots in the up, down, front, and rear directions by the operation of the operating motor to generate the second friction Including a moving panel forming a structure in which a protrusion is inserted into the first inner groove, the composite film packaging material supplied to the receiving space formed by the fixed panel and the moving panel is stretched left and right by pressing, and then the first A recycling system for a composite film packaging material characterized by generating a composite film packaging material stretched by stretching up and down by the friction protrusion and the second friction protrusion. According to claim 1,
The recycling system of the composite film packaging material, characterized in that it further comprises a crushing unit for generating a pulverized product by pulverizing the composite film packaging material to a predetermined size, and supplying the generated pulverized product to the hopper. According to claim 1,
The first extrusion processing unit further includes a compression unit installed in the first transfer cylinder,
The compression unit is
A fixing ring coupled to the inner circumferential surface of the front end of the first transfer cylinder and gradually reducing the inner diameter of the front end of the first transfer cylinder by forming a structure in which the diameter of the hole gradually decreases in the direction toward the front end of the first transfer cylinder,
A pressure plate that comes into surface contact with the outer circumferential surface of the fixing ring and shields the movement passage of the first treatment material formed inside the first transfer cylinder;
A coupling shaft fixing the pressing plate inside the front end of the first transfer cylinder, and
Including a pressing elastic member coupled along the outer circumferential surface of the coupling shaft and supporting the pressure plate to shield the movement passage of the first processing object formed inside the first transfer cylinder,
The recycling system of the composite film packaging material, characterized in that for separating the oil by pressurizing the first treated material supplied to the front end of the first transfer cylinder. According to claim 1,
A composite film packaging material further comprising a gas processing unit connected to the first outlet hole and the second outlet hole, respectively, and including a combustion chamber for receiving and burning the gas discharged from the second transfer cylinder and the third transfer cylinder. recycling system.

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