JP2023088008A - Apparatus for resource treatment of resin product waste and method for resource treatment of the same - Google Patents

Abstract

To provide an apparatus for resource treatment of resin product waste and a method for resource treatment of the same that can easily convert thermoplastic resin products subject to disposal into resources at a lower cost, even in familiar places of daily life.SOLUTION: An apparatus for resource treatment 1 includes: crushing means 10 for dividing a PET bottle 90 to be discarded into piece-like waste pieces 93 by crushing; a heating container 30 formed in a bottomed cylindrical shape having a side wall 31 surrounding an inner space 30S capable of accommodating the waste piece 93, and having a hole 35 through the inner space 30S and an outside thereof perforated in the side wall 31 in a size that does not allow a passage of the waste piece 93 in a pre-melted state, and also arranged to be able to rotate around an axis center AX; a heater 50 for heating the heating container 30; a motor 60 for rotating the heating container 30; and control means 2. The control means 2 performs temperature control by the heater 50 and rotation control by the motor 60 with respect to the heating container 30 in which the waste pieces 93 are stored in the inner space 30S.SELECTED DRAWING: Figure 1

Description

There is an application for application of Article 30, Paragraph 2 of the Patent Act. ~Innovation Created in Toyota, the Front Line of Manufacturing~", introducing the basic technology and development, released on March 10, 2021, "Manufacturing Creation Center SENTAN Homepage", March 11, 2021 The booth at the Toyota Business Fair 2021 (sponsored by Toyota City and the Toyota Chamber of Commerce and Industry) held at Sky Hall Toyota (Toyota City General Gymnasium) for two days on the 12th. Exhibited at "Juku" and opened to the public

TECHNICAL FIELD The present invention relates to a resin product waste resource recovery processing apparatus and a resource recovery processing method for converting thermoplastic resin products to be discarded into resources.

For example, so-called PET bottles are widely used as resin containers for containing beverages such as juice and water, seasonings such as soy sauce and dressings, and food and drink that are closely related to daily eating habits. . PET bottles are subject to disposal after they have served their purpose. In recent years, such PET bottles, packaging materials used for selling foodstuffs, and other resin products to be discarded are collected through local governments and the like and processed for resource recycling. As an example, Patent Literature 1 discloses a technique for regenerating flaky PET materials from discarded PET bottles.

In Patent Document 1, fragments of a crushed PET bottle body, fragments of a cap or ring, and fragments of a label (crushed fragments) are dropped into a water tank in which washing water is circulated, and then dropped into an opening at the upper part of the side wall of the water tank. By draining the water from the part, the fragments of the cap and the ring floating in the water are collected, and the fragments of the bottle body floating and sinking in the water are discharged through the rotating paddle that rotates while stirring the water in the water tank. This is a PET bottle crushing, washing and sorting device that collects PET bottles by

According to Patent Document 1, it is possible to separate only the fragments of the reusable plastic bottle body from the unnecessary plastic material to be discarded.

JP 2017-131841 A

For example, at convenience stores and vending machines where drinking water is purchased, collection boxes for PET bottles are installed. PET bottles that are empty after drinking water are put into this collection box. and collected. Empty PET bottles stored in the collection box are loaded onto a truck and transported to a predetermined location by a specialist. Since such empty PET bottles are particularly bulky, the number of empty PET bottles that can actually be transported is limited, and the transport cost is substantially higher, which is a problem.

On the other hand, in the technique of Patent Document 1, when empty PET bottles after drinking water are thrown into a PET bottle crushing, washing and sorting device, reusable fragments of bottle bodies are discarded with other materials. It can be collected separately from the fragments to be disposed of. However, in Patent Literature 1, the structure of the entire apparatus becomes large and complicated, and the main body of the apparatus increases in size. Therefore, as described above, when such a PET bottle crushing, washing and sorting apparatus is to be installed in a limited narrow space such as a convenience store or a supermarket, it is difficult to install the apparatus due to space constraints. There is a possibility that

The present invention has been made to solve the above problems, and it is possible to easily recycle thermoplastic resin products that have been discarded as resources at a lower cost even in familiar places of life. It is an object of the present invention to provide a resource recovery processing apparatus for resin product waste and a resource recovery processing method thereof.

In order to achieve the above object, a recycling processing apparatus for resin product waste according to the present invention has the following configuration.
(1) A waste resin product recycling apparatus for recycling thermoplastic resin material as a resource from resin product waste that is made of thermoplastic resin and has been subject to disposal, wherein the resin product waste is: It is formed in a bottomed cylindrical shape having a waste crushing means for crushing into one-piece waste pieces, an internal space capable of accommodating the waste pieces, and a side wall surrounding the internal space. has a hole penetrating through the internal space and its outside with a size that prevents the passage of the waste pieces in a pre-melted state, and is arranged so as to be able to rotate about its axis. a waste storage means, a heating means for heating the waste storage means, a driving means for generating and transmitting a rotational force to rotate the waste storage means, and a control means, wherein the control The means is characterized in that temperature control by the heating means and rotation control by the drive means are performed on the waste accommodation means in a state in which the waste pieces are accommodated in the internal space.
(2) In the apparatus for recycling resin product waste described in (1), the heating means is a heater that performs electromagnetic induction heating, and the waste storage means is the heater that generates Joule heat by electromagnetic induction. is made of a metal capable of generating
(3) In the apparatus for recycling resin product waste described in (1) or (2), the waste storage means has a bottom portion connected to the side wall, at a central portion including the axial center, the It is characterized in that it is connected to an output shaft that outputs a rotational force from a driving means, and the heating means is provided facing an outer peripheral portion of the bottom outside the central portion.
(4) In the apparatus for recycling resin product waste according to any one of (1) to (3), the outer space of the internal space is formed through an outer peripheral space around the waste storage means. and further comprising cover means for enclosing the waste containing means.
(5) In the resin product waste recycling apparatus described in (4), the resin product waste recycling apparatus is used as a teaching tool, and the cover means confirms the outer peripheral space from the outside. It is characterized by being formed in a possible transparent manner.
(6) In the apparatus for recycling resin product waste according to any one of (1) to (5), an inlet into which the resin product waste is introduced, and the internal space of the waste storage means. and a transfer path connecting the inlet and the outlet, wherein the waste crushing means is provided in the transfer path. characterized by
(7) In the resin product waste recycling apparatus described in (6), the waste crushing means has a first cutting blade and a second cutting blade, and the first cutting blade is The cylindrical waste resin product that has been thrown in is cut in its longitudinal direction or in a direction orthogonal to the longitudinal direction, and the second cutting blade cuts the resin product after being cut by the first cutting blade. The method is characterized by cutting the waste into single-piece waste pieces.
(8) The apparatus for recycling resin product waste according to any one of (4) to (7), further comprising exhaust means for sucking the atmosphere of the outer peripheral space and discharging it to the outside. ,
(9) In the apparatus for recycling resin product waste according to any one of (1) to (8), the resin product waste is an empty polyethylene terephthalate film containing food and drink contents. It is characterized by being a container made of tallat (PET: polyethylene terephthalate).

Further, in order to achieve the above object, the method for recycling resin product waste according to the present invention has the following configuration.
(10) In a method for recycling resin product waste, which is made of thermoplastic resin and has been subject to disposal, the thermoplastic resin material is recycled as a resource, wherein the resin product waste is A bottomed cylindrical shape having a first step of breaking into one-piece waste pieces by crushing, an internal space capable of accommodating the waste pieces, and a side wall surrounding the internal space; has a hole penetrating the inner space and its outside with a size that does not allow passage of the waste pieces in a pre-melted state, and is arranged rotatably about its axis. a second step of heating the waste containing means containing the waste pieces, the waste containing means containing the waste containing the waste pieces, and the waste containing means containing the waste containing the waste containing the waste pieces; The storage means is rotated on its axis, and in the execution of the second step, the slurry-like material in which the waste pieces are melted is moved around the waste storage means through the holes by the centrifugal force associated with the rotation of the waste storage means. and a third step of regenerating the thermoplastic resin material by discharging it to the outer peripheral space in the above and cooling it.
In the method for recycling resin product waste as described in (11), the resin product waste is an empty polyethylene terephthalate (PET) container containing food and drink contents. ,

The functions and effects of the apparatus for recycling resin product waste and the method for recycling the same according to the present invention having the above configuration will be described.

(1) Crushing resin product waste in a resin product waste resource recycling equipment that recycles thermoplastic resin material from resin product waste that is made of thermoplastic resin and has been subject to disposal treatment. It is formed in a bottomed cylindrical shape having a waste crushing means for dividing waste into single piece waste pieces, an internal space capable of accommodating the waste pieces, and a side wall surrounding the internal space. A waste storage means in which a hole passing through the space and its outside is pierced with a size that does not allow the passage of waste pieces in a state before melting, and is disposed so as to be able to rotate about its axis. a heating means for heating the waste containing means; a driving means for generating and transmitting a rotational force to rotate the waste containing means; It is characterized by performing temperature control by heating means and rotation control by driving means for the waste storage means in a state of being stored in the waste storage means.

Due to this feature, for example, when the resin product waste resource recovery processing apparatus according to the present invention is installed at a place such as a convenience store or vending machine where drinking water is purchased, instead of a collection box dedicated to PET bottles, , Resin product waste can be easily recycled and recycled into thermoplastic resin material, which is the raw material, in a fibrous form that is light and not bulky to carry. be able to. Therefore, for example, compared to the transportation cost of transporting resin product waste such as empty PET bottles stored in collection boxes to a processing site by truck or the like, the transportation cost of transporting recycled thermoplastic resin materials is substantially lower. It will be relatively cheap and cost will be reduced.

Therefore, according to the apparatus for recycling resin product waste according to the present invention, thermoplastic resin products to be discarded can be easily recycled at a lower cost even in familiar places of daily life. It has an excellent effect of being able to

In the apparatus for recycling resin product waste described in (2), the heating means is a heater that performs electromagnetic induction heating, and the waste storage means is a heater made of a metal capable of generating Joule heat by electromagnetic induction. characterized by becoming

Due to this feature, the waste pieces stored in the internal space of the waste storage means can be heated more uniformly by suppressing uneven heating, so that the entire waste pieces can be completely melted. A uniformly melted slurry-like substance is obtained without remaining foreign substances such as non-melted substances that were not melted or foreign substances that were locally overheated and changed in quality.

In the apparatus for recycling resin product waste described in (3), the waste storage means has an output shaft for outputting a rotational force from the drive means at a central portion including the axial center of the bottom connected to the side wall. It is characterized in that the heating means is arranged facing the outer peripheral portion outside the central portion of the bottom.

Due to this feature, the heat of the heating means convects in the internal space of the waste containing means containing the waste pieces, and the heat is easily transferred to the entire waste pieces contained in the internal space in a uniform state. can be melted in a uniform state.

In the apparatus for recycling resin product waste described in (4), a cover means is provided outside the internal space to surround the waste storage means via an outer peripheral space around the waste storage means. characterized by

With this feature, when one or more thermoplastic resin products are input from the entrance of the waste supply means of the apparatus for recycling resin product waste according to the present invention, the input thermoplastic resin products are regenerated. The fibrous thermoplastic resin material is accumulated in the outer peripheral space in a compact state. The thermoplastic resin material in such a state can be used as a raw material for, for example, non-woven fabrics, rod-shaped or plate-shaped building materials, daily necessities, and the like, through additional processing.

In the apparatus for recycling waste resin products described in (5), the apparatus for recycling waste resin products is used as a teaching tool, and the cover means is transparent so that the outer peripheral space can be checked from the outside. It is characterized in that it is formed by

Due to this feature, the resin product waste recycling processing apparatus according to the present invention can be used, for example, in kindergartens, nursery schools, elementary and junior high schools, etc., learning facilities, public facilities where events are held under the auspices of local governments, and educational activities. In addition to the place in the company where the You can observe how the material is regenerated.

In the apparatus for recycling resin product waste described in (6), an inlet for inputting resin product waste, an outlet for discharging waste pieces into the internal space of the waste storage means, and an inlet. It is characterized by comprising a waste supply means having a transfer path connecting with the outlet, and the waste crushing means is provided in the transfer path.

Due to this feature, if the entrance is located at a height near the entrance of the well-known PET bottle collection box installed in places such as convenience stores and vending machines, people will not be able to Plastic product waste can be thrown into the loading port in the same way as putting it into the loading port of the PET bottle collection box. Therefore, even if the person who puts in the resin product waste is, for example, a kindergartener or an elementary school student, even a small child, if the resin product waste is put into the entrance, the regenerated heat will be generated at a position lower than the entrance. The plastic resin material can be taken out.

In the apparatus for recycling resin product waste described in (7), the waste crushing means has a first cutting blade and a second cutting blade, and the first cutting blade has a tubular shape into which it is inserted. The second cutting blade cuts the resin product waste in the longitudinal direction or in a direction orthogonal to the longitudinal direction, and the second cutting blade cuts the resin product waste after cutting by the first cutting blade into a single waste piece. characterized by dividing into

With this feature, for example, waste pieces from resin product waste such as well-known PET bottles having a volume of 500 ml of drinking water can be cut into fine pieces of about several mm at the largest size part. can be done. Therefore, the waste pieces can be used as a resource without being put into the internal space of the waste storage means.

The apparatus for recycling resin product waste described in (8) is characterized by comprising exhaust means for sucking the atmosphere of the outer peripheral space and discharging it to the outside.

Due to this feature, the odor and molten gas (smoke) generated when the waste pieces are melted are sucked and removed by the exhaust means. A material recycling processing device can be used.

(9) In the apparatus for recycling resin product waste described in (9), the resin product waste is an empty polyethylene terephthalate (PET) container containing contents for eating and drinking. characterized by

Due to this feature, innumerable PET containers (PET bottles) that have been on the market in recent years in our daily lives can be easily recycled into PET materials by the recycling processing equipment for resin product waste according to the present invention. can be turned into resources. Therefore, the resource recovery processing apparatus and resource recovery processing method for resin product waste according to the present invention can contribute to the solution of environmental problems, which have become global issues, and can contribute to sustainable development. It can greatly contribute to the achievement of the goals (SDGs: Sustainable Development Goals).

(10) In a method for recycling resin product waste, which is made of thermoplastic resin and has been subject to disposal, the thermoplastic resin material is recycled as a resource, in which the resin product waste is crushed. A bottomed cylindrical shape having a first step of dividing into one piece of waste pieces by a process, an inner space that can accommodate the waste pieces, and a side wall that covers the inner space, and the side wall has an inner space and a hole penetrating the outside thereof is pierced with a size that does not allow passage of waste pieces in a state before melting, and a waste storage means arranged so as to be able to rotate around its axis The waste pieces are stored in the internal space of the waste storage means using a second step of heating the waste storage means containing the waste pieces, and the second step is performed by rotating the waste storage means. , the slurry material in which the waste pieces are melted is discharged through the holes to the outer peripheral space around the waste storage means by the centrifugal force caused by the rotation of the waste storage means, and cooled, and the thermoplastic resin is and a third step of regenerating the material.

Due to this feature, for example, when the waste resin product according to the present invention is installed in places such as convenience stores and vending machines where drinking water is purchased, instead of collecting boxes dedicated to PET bottles, waste resin products can easily be recycled into a thermoplastic resin material, which is the raw material, in a fibrous form that is light and not bulky to carry, by this resource recovery processing device at the place. Therefore, for example, compared to the transportation cost of transporting resin product waste such as empty PET bottles stored in a collection box to a processing site by truck or the like, the transportation cost of transporting recycled thermoplastic resin materials is Substantially cheaper, resulting in cost reduction.

Therefore, according to the method for recycling resin product waste according to the present invention, thermoplastic resin products to be discarded can be easily recycled at a lower cost even in familiar places of life. It has an excellent effect of being able to

(11), in which the resin product waste is an empty polyethylene terephthalate (PET) container that has contained food and beverage contents; characterized by

Due to this feature, innumerable PET containers (PET bottles) that have been on the market in recent years in our daily lives can be easily recycled into PET materials by the recycling processing equipment for resin product waste according to the present invention. can be turned into resources.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows roughly the resource recovery processing apparatus which concerns on embodiment from the front side. In FIG. 1, it is a figure which shows the 1st cutting part of a crushing means by A arrow. FIG. 2 is an explanatory view showing an exploded perspective view of a heating container and a heater in the recycling processing apparatus shown in FIG. 1; 4 is a cross-sectional view of the heating container and the heater shown in FIG. 3; FIG. It is a figure explaining the function of the resource conversion processing apparatus which concerns on embodiment. FIG. 2 is a flow chart showing a series of steps up to recycling a thermoplastic resin material from resin product waste by the resin product waste recycling method according to the embodiment. FIG. 2 is an explanatory diagram showing a PET material regenerated into fibers by the resin product waste recycling method according to the embodiment. It is a figure which shows the table|surface which put together the conditions and the result with respect to the verification experiment which confirms the effect of the resin product waste which concerns on embodiment. FIG. 8 is a graph showing the relationship between the number of PET bottles to be put in and the time required for PET material to be recycled from the PET bottles put in under the optimum conditions of the verification experiment, following FIG.

A preferred embodiment of the apparatus for recycling organic waste and the method for recycling the organic waste according to the present invention will be described below in detail with reference to the drawings.

The resin product waste resource recycling device (hereinafter simply referred to as "resource recycling device") according to the present invention is made of thermoplastic resin, and the thermoplastic resin It is a device that recycles wood as a resource. The resource recovery processing apparatus uses thermoplastic resin materials such as polyethylene (PE), polypropylene (PP), polycarbonate (PC), etc. as the resin material to be processed. In this embodiment, polyethylene terephthalate (PET: polyethylene terephthalate), and the resin product waste is an empty PET container (PET bottle) containing drinking water such as water and juice, as an example of contents for eating and drinking. Further, in the method for recycling organic waste according to the present invention, in the present embodiment, the recycling processing apparatus is used to recycle PET materials from empty PET bottles to be disposed of as resources. will be mentioned and explained.

First, a resource recovery processing apparatus according to the present invention will be described. FIG. 1 is an explanatory view schematically showing the resource recovery processing apparatus according to the embodiment from the front side, and FIG. 2 is a view showing the first cutting portion of the crushing means in the direction of arrow A in FIG. 3 is an exploded perspective view of a heating container and a heater in the resource recycling apparatus shown in FIG. 1, and FIG. 4 is a sectional view of the heating container and heater shown in FIG. FIG. 6 is a diagram for explaining functions of the resource recovery processing apparatus according to the embodiment.

For convenience of explanation, the horizontal direction in FIG. is defined as the depth direction D. Each figure after FIG. 3 conforms to the defined direction. 5, in the PET bottle 90, the direction connecting the container opening side (lower left side in FIG. 5) and the bottom side (upper right side in FIG. 5) is defined as the longitudinal direction L, and the direction orthogonal to the longitudinal direction L are defined as a first direction M and a second direction N, respectively.

As shown in FIGS. 1 to 4, the recycling processing apparatus 1 includes a control means 2, a crushing means 10 (waste crushing means), a supply means 20 (waste supply means), a heating container 30 (waste housing means), a heater 50 (heating means), a motor 60 (driving means), a cover member 70 (cover means), an exhaust means 80, and the like. The resource recovery processing apparatus 1 is roughly divided into a body control section 3 , a body processing internal 4 , and a body processing external 5 .

The resource recovery processing device 1 is a device developed as a teaching tool for positively collecting waste for the purpose of fostering and raising awareness of resource recycling in order to change the subconscious mind about environmental problems. It is a device that can contribute to the achievement of Sustainable Development Goals (SDGs) by improving the collection rate of effective waste that can be recycled. The resource recovery processing apparatus 1 is mainly intended for small children and young people who will shoulder the future. , It is a teaching tool that is used not only in companies where educational activities are conducted, but also at home. FIG. 1 schematically shows the configuration of the main part of the resource recovery processing apparatus 1, but it can be used as a costume, for example, a dinosaur, a monster, an animal, a popular character, or the like. The main part of the recycling processing device 1 as shown in FIG. It may be wrapped in

<Regarding Main Processing External 5>
First, the main processing unit 5 will be described with reference to FIGS. 1, 3 and 4. FIG. A crushing means 10 and a supply means 20 are provided in the body processing outside 5 . The crushing means 10 is a unit that crushes the PET bottle 90 and divides it into one-piece waste pieces 93 . The supply means 20 includes an inlet 21 for throwing in the PET bottle 90, an outlet 22 for discharging the waste pieces 93 toward the internal space 30S of the heating container 30, and a transfer path connecting the inlet 21 and the outlet 22. 23. The crushing means 10 is provided on the transport path 23 of the feeding means 20 .

A specific description will be given. The transfer path 23 is formed so that the substantially cylindrical PET bottle 90 inserted therein can be inserted into the interior surrounded by the cylindrical outer wall. The outlet 22 of the supply means 20 is arranged at a position close to the opening 33 of the heating container 30 in the main processing interior 4, as will be described later. A part of the outer peripheral wall of the transfer path 23 forms a peripheral wall opening 24 . A peripheral portion of the peripheral wall opening 24 that does not interfere with the cutting edge is formed in a mesh shape.

The crushing means 10 is divided into two, a first cutting section 10A and a second cutting section 10B, in this embodiment. 1 and 2, the first cutting section 10A is provided in a portion of the transport path 23 near the carry-in port 21. As shown in FIGS. The first cutting section 10A is arranged along a direction perpendicular to the delivery direction of the PET bottle 90 that is thrown in from the carry-in port 21 and moves to the carry-out port 22 side (a direction that traverses the travel of the PET bottle 90). A first rotating shaft 12, a first cutting blade 11 (first cutting blade) attached rotatably around the first rotating shaft 12, and a power source for rotating the first cutting blade 11. It has a cutting drive 13 .

The first cutting blade 11 of the first cutting portion 10A is a disc-shaped cutting blade having a cutting blade on the outer circumference, and the cutting blade of the first cutting blade 11 is arranged in the peripheral wall opening 24 . The power generated by the motor in the first cutting drive unit 13 can be transmitted as the rotational force of the first cutting blade 11, and the first cutting blade 11 is transmitted to the first cutting blade 11 via a well-known power transmission mechanism. It rotates by receiving the power generated by the cutting drive section 13 .

In this embodiment, one first cutting blade 11 is provided in FIG. , may be provided in a substantially +-shaped arrangement. As a result, the first cutting blade 11 splits the PET bottle 90 introduced from the carry-in port 21 into two along the longitudinal direction L, for example, by one first cutting blade 11 . The PET bottle 90 can be divided into a plurality of pieces in the circumferential direction, such as four divisions, and the divided PET bottle 91 (resin product waste after cutting) is obtained by cutting the PET bottle 90 into a plurality of divisions.

At this time, the bottle cap and cap ring attached to the PET bottle 90 are cut off from the PET bottle 90 in advance before being thrown into the inlet 21 of the supply means 20, and then the first cutting blade 11 cuts the PET bottle 90. is divided into a plurality (for example, 2 to 4) and cut. Chips 92 generated by cutting the PET bottle 90 are accumulated in the receiving portion 25 placed outside the supply means 20 through the peripheral wall opening 24 .

As shown in FIG. 1, the second cutting section 10B is provided in a portion of the transfer path 23 near the carry-out port 22. As shown in FIG. The second cutting unit 10B includes two second rotating shafts 16 arranged parallel to each other, a pair of second cutting blades 15 (second cutting blades), and a power source for rotating the second cutting blades 15. It has a second cutting drive unit 17 which is Each of the second cutting blades 15 is a skewer blade formed in a substantially cylindrical shape, and is attached so as to be rotatable about a second rotating shaft 16 . In the second cutting section 10B, one skewer blade of the second cutting blade 15 that rotates on one second rotating shaft 16 and a skewer blade of the other second cutting blade 15 that rotates on the other second rotating shaft 16 are arranged so as to overlap each other with a gap provided between them.

The power generated by the motor in the second cutting drive unit 17 can be transmitted as the rotational force of the second cutting blade 15, and the second cutting blade 15 is transmitted to the second cutting blade 15 via a well-known power transmission mechanism. It rotates by receiving the power generated by the cutting drive section 17 . As a result, the second cutting blade 15 cuts the PET bottle 90 into a plurality of pieces by the first cutting blade 11, and cuts the PET bottle 91 into a plurality of pieces in a first direction M and a second direction perpendicular to the longitudinal direction L of the PET bottle 91. By crushing along N, it is possible to cut into small pieces of waste material 93 of about several millimeters at the largest size portion.

<Regarding main body processing internal 4>
Next, the internal processing unit 4 will be described with reference to FIGS. 1, 3 and 4. FIG. As shown in FIGS. 1 and 3, the main processing interior 4 includes a heating container 30, a heater 50, a motor 60, a cover member 70, and the like. The heating container 30 , the heater 50 and the motor 60 are arranged on a two-stage pedestal 53 erected on the top plate 7 on the base 6 . The heating container 30 is arranged on the upper part of the pedestal 53 , and the motor 60 is fixed on the lower part of the pedestal 53 .

The heating container 30 includes an inner space 30S capable of accommodating the waste pieces 93, a side wall 31 surrounding the inner space 30S, a bottom portion 34 connected to the side wall 31, a ceiling portion 32 facing the bottom portion 34, and a motor 60. It has a connecting portion 36 to be connected to the output shaft 61 of , and is formed in a cylindrical shape with a bottom including an opening 33 in the ceiling portion 32 . The heating container 30 has a substantially cylindrical shape, but as shown in FIG. is smaller than In other words, the internal space 30S of the heating container 30 has a shape that expands downward from the vicinity of the center in the height direction H. As shown in FIG.

The bottom portion 34 is made of a thin plate material that is thinner than the wall thickness of the side wall 31 and is formed with high thermal conductivity, so that the heat generated by the heater 50 is easily conducted from the bottom portion 34 to the entire heating container 30 . As shown in FIG. 4 , the circumferential portion of the bottom portion 34 having the hole 35 is part of the side wall 31 . In the bottom part 34, there are four holes 35 penetrating the inner space 30S and the outside thereof. It is perforated with a size that does not allow passage of the object piece 93 . Although four holes 35 are shown in the side wall 31 in FIGS. 1, 3, 4, and 6, the number, diameter, and position of the holes 35 can be changed as appropriate.

The motor 60 is an inverter-controlled power source that generates and transmits rotational force to the output shaft 61 to rotate the heating vessel 30, and the rotation of the output shaft 61 can be freely controlled. The heating container 30 is connected to the output shaft 61 of the motor 60 at the connecting portion 36 by screwing or the like, so that the heating container 30 can rotate about the axis AX. The heating container 30 is made of metal such as iron, stainless steel, aluminum, titanium, etc., which can generate Joule heat by electromagnetic induction with a heater 50 that performs electromagnetic induction heating (IH).

The heater 50 is a heater that heats the heating container 30 by electromagnetic induction heating, as described above. The heater 50 heats the waste piece 93 contained in the internal space 30S to a temperature exceeding the melting point of 260° C. of the PET material (polyethylene terephthalate), which is the raw material of the waste piece 93, and heats the heating container 30 to a melting temperature. It has the ability to heat. The heater 50 has a coil portion 51 necessary for electromagnetic induction and a ceramic plate portion 52 . As shown in FIGS. 3 and 4 , the motor 60 is fixed to the lower part of the frame 53 with the output shaft 61 facing upward, and the output shaft 61 extends to the upper part of the frame 53 . A bearing 62 for holding the output shaft 61 is disposed on the upper part of the frame 53 so as to be aligned with the axis AX, and the coil part 51 is embedded in the upper part of the frame 53 on the outer periphery of the bearing 62 . , is worn. The plate portion 52 is arranged on the coil portion 51 .

That is, the heating container 30 is connected to the output shaft 61 for outputting the rotational force from the motor 60 at the central portion 34A including the axis AX in the bottom portion 34, and the heater 50 is connected to the central portion 34A in the bottom portion 34. It is provided so as to face the outer peripheral portion 34B on the outside of the .

A cover member 70 is provided on the base 6 so as to surround the heating vessel 30, the heater 50, and the motor 60 via an outer peripheral space 73S. . The cover member 70 is, for example, a member made of a transparent resin plate such as a colorless and transparent acrylic plate so that the state of the outer peripheral space portion 73S can be checked from the outside. The cover member 70 has side covers 71 and a ceiling cover 72 . The side cover 71 is formed in a square shape along the four sides of the outer edge of the rectangular top plate 7, surrounds the outlet 22 of the supply means 20, and is located on one of the four sides. The door can be opened and closed. Inside the cover member 70, the tip of the hose 81 of the exhaust means 80 is arranged. The ceiling cover 72 is arranged so as to face the top plate 7 of the base 6 so as to close the main processing interior 4 around the second cutting part 10B.

<Regarding main body control unit 3>
Next, the body control section 3 will be described with reference to FIG. In the body control unit 3 , the control means 2 and the suction/exhaust part 82 of the exhaust means 80 are arranged under the top plate 7 of the base 6 . The exhaust means 80 can suck the gas contained in the atmosphere of the outer peripheral space 73S (melted gas, odor, etc. generated by the melting of the waste pieces 93) through the hose 81, which is flexible and deformable. In addition, it has a suction/exhaust part 82 that can purify the sucked gas with a filter and exhaust it to the outside.

The control means 2 electrically controls the motor of the first cutting drive section 13 of the crushing means 10, the motor of the second cutting drive section 17, the heater 50, the motor 60, the suction and exhaust section 82 of the exhaust means 80, and the like. It is connected to the. The control means 2 performs temperature control of the heater 50 and rotation control of the motor 60 with respect to the heating container 30 in which the waste pieces 93 are stored in the internal space 30S. Although not shown, the resource recycling processing apparatus 1 is provided with a resin product waste sensor capable of detecting the PET bottles 90 put into the supply means 20, and the control means 2 controls the operation based on the resin product waste sensor. , the crushing means 10, the heater 50, the motor 60, and the exhaust means 80 may be controlled. Thus, when the PET bottle 90 is put into the supply means 20, the crushing means 10, the heater 50, the motor 60, and the exhaust means 80 are turned on by the control means 2, and the recycling processing apparatus 1 automatically operates. , the thrown-in PET bottle 90 can be recycled into a fibrous PET material 95 via waste pieces 93 and slurry-like substance 94 .

Next, a method for recycling resin product waste according to the present embodiment will be described with reference to FIGS. 5 and 6. FIG. In the resin product waste recycling method according to the present embodiment, as an example, the above-described resource recycling processing apparatus 1 is used, and the resin product waste, as described above, is an example of contents for eating and drinking, It is an empty PET container (PET bottle 90) that contains drinking water such as water and juice and has been discarded after completing its role.

The resin product waste resource recycling method according to the present embodiment is to recycle the PET material (thermoplastic resin material) that is the raw material of the empty PET bottle 90, which is the object of disposal, as a resource. It has a first step, a second step, and a third step. FIG. 5 is a diagram for explaining functions of the resource recovery processing apparatus according to the embodiment.

In the first step, as shown in FIG. 5, the PET bottle 90 is broken into pieces of waste material 93 by crushing. In the second step, the waste pieces 93 are accommodated in the internal space 30S of the heating container 30, and the heating container 30 containing the waste pieces 93 is heated. In the third step, the heating container 30 is rotated about the axis AX, and in the execution of the second step, the slurry-like material 94 in which the waste pieces 93 are melted is moved to the heating container 30 by the centrifugal force accompanying the rotation of the heating container 30. The fibrous PET material is regenerated by discharging it into the outer peripheral space 73S around the heating vessel 30 through the holes 35 in the side wall 31 of the heating vessel 30 and air-cooling it.

A specific description will be given. FIG. 6 is a flow chart showing a series of steps up to recycling a thermoplastic resin material from resin product waste by the resin product waste recycling method according to the embodiment. FIG. 7 is an explanatory diagram showing a PET material regenerated into fibers by the method for recycling resin product waste according to the embodiment.

In carrying out the first step, as shown in FIGS. 5 and 6, the cap, which is the lid, and the pair of cap rings are removed in advance, and the bottle body (hereinafter simply referred to as (referred to as "PET bottle 90") is put into the carry-in port 21 of the supply means 20 (first step P1 in FIG. 5). As a result, the PET bottle 90 is sent to the first cutting section 10A and the second cutting section 10B of the crushing means 10 through the transfer path 23 by free fall.

In the next second step P2, the PET bottle 90 is cut into two PET bottles 91 along the longitudinal direction L by the first cutting section 10A, as shown in FIG. Then, in the next third stage P3, the PET bottle 91 after being cut is cut by the second cutting section 10B into fine waste pieces 93 of about several millimeters at the largest size portion.

In the second step, the waste pieces 93 fall from the outlet 22 of the supply means 20 and are accommodated in the internal space 30S of the heating container 30 through the opening 33 . At this time, if the volume of the internal space 30S is filled with the waste pieces 93, there is a risk that the waste pieces 93 may spill out of the opening 33 when the heating container 30 rotates. The amount should be, for example, up to half of the inner space 30S. Alternatively, when the internal space 30S is filled with the waste pieces 93, after the waste pieces 93 are contained, the lid (ceiling portion 32) that closes the opening 33 when the heating container 30 rotates is attached to the heating container. 30 is preferred.

In a fourth step P4 following the third step P3, the heating container 30 containing the waste pieces 93 is heated by the heater 50 to a temperature of, for example, 270° C. and above 260° C., and the waste in the interior space 30S is heated. The pieces 93 are melted to produce a slurry material 94, as shown in FIG. At this time, it is important to sufficiently heat and melt the waste pieces 93 until the slurry-like substance 94 has a uniform viscosity. In particular, if the viscosity of the slurry-like substance 94 in the entire slurry-like substance 94 generated in the internal space 30S of the heating vessel 30 is in a state of partial variation, the third step described later may When the slurry substance 94 passes through the holes 35 of the heating container 30 , the difference in viscosity causes a difference in fluidity within the holes 35 . As a result, the properties of the recycled PET material are adversely affected.

In carrying out the third step, in the fifth step P5 following the fourth step P4, the heater 50 continues to heat the heating vessel 30 from the fourth step P4, thereby heating the slurry-like substance 94. The heating container 30 is rotated (rotated) around the axis AX at a predetermined peripheral speed by the motor 60 . At this time, the control means 2 controls the temperature of the heating container 30 by the heater 50 so that the slurry-like substance 94 in the heating container 30 can maintain an appropriate viscosity uniformly, while the motor 60 controls the temperature of the heating container 30 by the motor 60. It is preferable to control the rotation of

By executing the fifth step P5, the slurry-like substance 94 in the heating container 30 is moved through the holes 35 in the side wall 31 by the centrifugal force caused by the rotation of the heating container 30 to the outer peripheral space 73S around the heating container 30. and air-cooled in the atmosphere to harden and fiberize (sixth stage P6). Thus, the PET bottle 90 is recycled into a fibrous PET material 95 just like cotton candy through a slurry-like substance 94 in which the waste pieces 93 are melted, as shown in FIG.

Next, a verification experiment was conducted for the purpose of confirming the effect of the method for recycling resin product waste according to the embodiment.

<Experimental method>
In the experiment, a waste piece 93 obtained by cutting an empty PET bottle 90 washed by the resin product waste recycling method according to the embodiment was used as the heating container 30 by using the recycling processing apparatus 1 . A molten slurry-like substance 94 was produced by putting it in a heating vessel for experiment and heating it. The experimental heating container containing the slurry-like substance 94 is rotated, and the slurry-like substance 94 is diffused into the outer peripheral space 73S through the holes in the side wall of the experimental heating container, air-cooled, and regenerated fibrous PET. The material was sensory evaluated by visual observation together with the measurement of the fiber diameter.

FIG. 8 is a diagram showing a table summarizing the conditions and results of the verification experiment for confirming the effect of the resin product waste according to the embodiment. In the experiment, as shown in FIG. 8, the results were evaluated according to the three-level criteria of "◯", "Δ", and "×". “〇” indicates that the quality of fibrous PET materials is consistent and stable in terms of both aesthetic quality items such as color and frizz and shape quality items such as thickness, length, and presence or absence of clumps. The PET material has been recycled in good condition.” "△" indicates that "For fibrous PET materials, there is no variation in the aesthetic quality and shape quality items, and although some are stable, the rest have variations, and in terms of quality, The PET material is being recycled in a somewhat unstable state." "X" is based on the judgment that ``the quality of the fibrous PET material varies in both appearance and shape, and the PET material is recycled in an unstable state.'' be.

<Experimental conditions>
(1) Specification of experimental heating container: Cylindrical container (heating container 30) with a diameter of Φ 106 mm and a height of 40 mm
(2) Rotational speed (rpm) of experimental heating vessel; 500, 700, 900, 1000
(3) Peripheral speed (m/min) of the experimental heating vessel for the number of revolutions in (2); 166.4 at 500 (rpm), 233.0 at 700 (rpm), 299.6 at 900 (rpm) 332.8 at 1000 (rpm)
(4) Hole; diameter Φ 1.6 mm, number 4, located at a height of 5 mm from the bottom of the side wall of the experimental heating container and divided into four equal parts in the circumferential direction of the container (5) Waste pieces by the heater 50 93 heating temperature; a low temperature range exceeding 260 ° C. but less than 270 ° C. (indicated as "low" in the table shown in FIG. 8), an intermediate temperature range in the vicinity of 270 to 300 ° C. ( In the table shown in FIG. 8, indicated as "medium"), high temperature range exceeding 300 ° C. (indicated as "high" in the table shown in FIG. 8)
(6) The size of one waste piece 93; Input number (books); 1 to 3

<Experimental results>
FIG. 9 is a graph showing the relationship between the number of PET bottles put in and the time it takes for the put PET bottles to be recycled into PET materials under the optimum conditions of the verification experiment, following FIG. As shown in FIG. 8, when the heating of the waste piece 93 by the heater 50 is in the low temperature range, the rotation speed (rpm) of the experimental heating container is 500, 700, 900, and 1000. Even if there was, the result was "x". Also, when the waste piece 93 was heated in the middle temperature range, the result was "O" when the rotation of the experimental heating container was 900 and 1000 (rpm), but the result was 700 (rpm). was "△", and at 500 (rpm), the result was "×". Also, when the waste piece 93 is heated in the high temperature range, the result was "o" when the rotation of the experimental heating container was 700, 900, and 1000 (rpm), but the result was 500 (rpm). Then the result was "x".

In addition, the fiberization time from the input of the PET bottle 90 to the regeneration of the fibrous PET material is 3 (min) when one PET bottle 90 is input, and 5 (min) when two PET bottles are continuously input. ), and 8 (min) in the case of three continuous feeds. Moreover, the fiber diameter of the recycled PET material was approximately 30 μm regardless of the sensory evaluation results.

(Discussion)
According to the experimental results, if the waste piece 93 is heated in a medium temperature range or higher (approximately 270 to 300° C.), the entire waste piece 93 contained in the experimental heating container is sufficiently heated. It is considered that the melted and produced slurry-like substance has an overall uniform viscosity and is in a low viscosity state (temperature setting conditions). Further, when the number of revolutions of the experimental heating container is 900 (rpm) or more, the peripheral speed of the experimental heating container is approximately 300 (m/min) or more, and the slurry-like substance contained in the experimental heating container In addition, a larger centrifugal force acts as the experimental heating container rotates (peripheral speed setting conditions). If such temperature setting conditions and peripheral speed setting conditions are satisfied, the slurry-like substance has a state of uniform viscosity and low viscosity as described above. , and is smoothly diffused from the inside of the experimental heating container to the outer peripheral space 73S without stagnation in the holes.

Therefore, the slurry material diffused into the outer peripheral space 73S is cooled by the atmosphere, and it is presumed that it is regenerated as a fibrous PET material with stable quality in terms of the appearance quality and shape quality items. Further, if the temperature setting conditions and the peripheral speed setting conditions as described above are satisfied, the slurry-like substance can easily flow through the holes of the experimental heating vessel in a state of uniform and low viscosity as a whole. It's becoming Therefore, it can be seen that the fiberization time for one PET bottle 90 is approximately 2.5 to 3 (min) regardless of the number of PET bottles 90 put in.

Conversely, as described above, which of the temperature condition in which the waste piece 93 is in the middle temperature range or higher and the peripheral speed setting condition in which the peripheral speed of the experimental heating container is approximately 300 (m/min) or higher is selected. If not, the slurry-like substance contained in the experimental heating container does not have a uniform viscosity and a low viscosity as a whole. The centrifugal force acting on the slurry substance becomes smaller than when the circumferential speed of the experimental heating container is approximately 300 (m/min), and it becomes difficult for the material to dissipate from the experimental heating container to the outer peripheral space 73S. For this reason, the fluidity of the slurry material varies depending on the holes through which it passes, and the slurry material diffused into the outer peripheral space 73S has variations in the appearance quality item and the shape quality item after air cooling. It is presumed that the quality is unstable and that it is recycled into a fibrous PET material.

Further, even if the waste piece 93 satisfies the temperature condition of the intermediate temperature range or higher, if the peripheral speed of the experimental heating container does not satisfy the peripheral speed condition of about 300 (m/min) or higher, the experimental In the heating vessel, the generated slurry-like substance has a uniform viscosity as a whole and is in a state of low viscosity. However, when the rotational speed of the experimental heating container is 700 (rpm), the centrifugal force acting on the slurry-like substance is smaller than when the peripheral speed of the experimental heating container is approximately 300 (m/min).

Therefore, although the slurry-like substance contained in the experimental heating container has a relatively uniform and low viscosity, the peripheral speed of the experimental heating container is approximately 300 (m/ min), the slurry-like substance is less likely to diffuse from the inside of the experimental heating container toward the outer peripheral space 73S. As a result, the fluidity of the slurry material varies depending on the holes through which it passes, and the slurry material diffused into the outer peripheral space 73S after air-cooling has no variation in the appearance quality item and the shape quality item. It is presumed that the unstable quality of the material will be regenerated into a fibrous PET material.

Next, the functions and effects of the apparatus 1 for recycling resin product waste and the method for recycling resin product waste according to the present embodiment will be described.

The resource recovery processing apparatus 1 according to the present embodiment is made of thermoplastic resin, and is a resource recovery processing apparatus for PET bottles 90 that recycles PET materials 95 from PET bottles 90 that are subject to disposal processing as resources. 90 into a single-piece waste piece 93 by crushing, an inner space 30S capable of accommodating the waste piece 93, and a bottomed cylindrical shape having a side wall 31 covering the inner space 30S. In the side wall 31, a hole 35 passing through the inner space 30S and its outside is perforated with a size that does not allow passage of the waste piece 93 in a state before melting, and the axis AX is aligned with the hole 35. Equipped with a heating container 30 arranged rotatably in the center, a heater 50 for heating the heating container 30, a motor 60 for generating and transmitting a rotational force to rotate the heating container 30, and a control means 2. The control means 2 is characterized by performing temperature control by the heater 50 and rotation control by the motor 60 with respect to the heating container 30 in which the waste pieces 93 are accommodated in the internal space 30S.

In addition, the resin product waste recycling method according to the present embodiment recycles the PET material 95 from the PET bottle 90, which is made of a thermoplastic resin and has been subject to disposal, as a resource for the resin product waste. In the recycling method, a first step of breaking a PET bottle 90 into single waste pieces 93 by crushing, an inner space 30S capable of accommodating the waste pieces 93, and a side wall 31 covering the inner space 30S. In the side wall 31, a hole 35 passing through the inner space 30S and its outside is perforated with a size that prevents the passage of the waste piece 93 in a state before melting. At the same time, the waste pieces 93 are accommodated in the internal space 30S of the heating container 30 using the heating container 30 that is rotatable about the axis AX, and the heating container 30 containing the waste pieces 93 is heated. A second step of heating and rotating the heating vessel 30. In the execution of the second step, the slurry material 94 in which the waste pieces 93 are melted is heated through the holes 35 by centrifugal force accompanying the rotation of the heating vessel 30. and a third step of regenerating the PET material 95 by discharging it to the outer peripheral space 73S around the container 30 and cooling it.

Due to such characteristics, for example, when the recycling processing device 1 is installed at a place such as a convenience store or a vending machine where drinking water is purchased instead of a collection box dedicated to PET bottles, the PET bottles 90 are At that location, the PET material 95 in a fibrous form that is light and not bulky to carry can be easily recycled and recycled by the resource recovery processing apparatus 1 . Therefore, the transportation cost of transporting the recycled PET material 95 is substantially cheaper than the conventional transport cost of transporting the empty PET bottles stored in the collection box to the disposal site by truck, resulting in cost reduction. . Moreover, compared with the apparatus disclosed in Patent Document 1, the recycling processing apparatus 1 has a simple structure and can be miniaturized. In particular, the recycling processing apparatus 1 can be easily installed even in a limited narrow space in various familiar places such as public facilities such as convenience stores and supermarkets.

Therefore, according to the recycling processing apparatus 1 according to the present embodiment, the discarded PET bottles 90 can be easily recycled at a lower cost even in familiar places of daily life. It works great. Further, the method for recycling resin product waste according to this embodiment also has the same effects as the recycling processing apparatus 1 according to this embodiment.

Further, in the resource recovery processing apparatus 1 according to the present embodiment, the heater 50 is a heater that performs electromagnetic induction heating, and the heating container 30 is made of a metal capable of generating Joule heat by electromagnetic induction. characterized by

Due to this feature, the entire waste piece 93 accommodated in the internal space 30S of the heating container 30 can be heated more uniformly by suppressing uneven heating. A uniformly melted slurry material 94 is obtained without remaining foreign matters such as non-melted materials that have not been melted or degraded materials that have been locally overheated and degraded.

Further, in the recycling processing apparatus 1 according to the present embodiment, the heating container 30 has an output shaft 61 for outputting rotational force from the motor 60 at the central portion 34A including the axis AX in the bottom portion 34 connected to the side wall 31. , and the heater 50 is provided in the bottom portion 34 so as to face the outer peripheral portion 34B outside the central portion 34A.

Due to this feature, the heat from the heater 50 convects in the internal space 30S of the heating container 30 containing the waste pieces 93, and the heat is easily transferred to the entire waste pieces 93 contained in the internal space 30S in a uniform state. , the waste piece 93 can be melted in a uniform state.

Further, in the recycling processing apparatus 1 according to the present embodiment, the cover member 70 surrounding the heating container 30 is provided outside the internal space 30S via the outer peripheral space 73S around the heating container 30. characterized by

Due to this feature, when one or more PET bottles 90 are fed from the loading port 21 of the supply means 20 of the recycling processing apparatus 1, the fibrous PET material 95 recycled from the fed PET bottles 90 is 7, they are collected in the outer peripheral space 73S in a compact state. The PET material 95 in such a state can be made into, for example, a non-woven fabric, a rod-shaped or plate-shaped building material, or a material for daily necessities by additional processing.

In addition, in the recycling processing apparatus 1 according to the present embodiment, the resin product waste recycling processing apparatus is used as a teaching tool, and the cover member 70 is transparent so that the outer peripheral space 73S can be confirmed from the outside. , is formed.

Due to this feature, the resource recovery processing apparatus 1 can be used, for example, in places such as kindergartens, nursery schools, elementary and junior high schools, where learning facilities are held, public facilities where events are held under the auspices of local governments, and places within companies where educational activities are conducted. When installed in a home or the like, mainly small children and young people who carry the future on their backs observe the process of recycling the PET material 95 from the PET bottle 90 in the outer peripheral space 73S beyond the cover member 70. be able to. With this as an opportunity, children and young people, for example, use the resource recovery processing device 1 wrapped in a body means decorated with the appearance of a dinosaur, a popular character, etc., as if playing, and have become a target for disposal. When the empty PET bottles 90 are actively collected, children and young people inevitably develop and raise their subconscious awareness of resource recycling and environmental problems. , can contribute to improving the collection rate of effective waste that can be recycled.

Further, in the recycling processing apparatus 1 according to the present embodiment, the inlet 21 for throwing in the PET bottles 90, the outlet 22 for discharging the waste pieces 93 into the internal space 30S of the heating container 30, and the inlet 21 A feeding means 20 having a transport path 23 connecting with a carry-out port 22 is provided, and the crushing means 10 is provided in the transport path 23 .

Due to this feature, as shown in FIGS. 1 and 5, the inlet 21 is arranged at a height near the inlet of a well-known PET bottle collection box installed in places such as convenience stores and vending machines. With this, the PET bottle 90 can be put into the carry-in port 21 in the same way as a person puts it into the inlet of a collection box dedicated to PET bottles. In addition, even if the person who puts in the PET bottle 90 is, for example, a kindergarten child, an elementary school student, or even a small child, if the PET bottle 90 is put into the inlet 21, the regenerated fibers will appear at a position lower than the inlet 21. A shaped PET material 95 can be taken out.

Further, in the recycling processing apparatus 1 according to the present embodiment, the crushing means 10 has the first cutting blade 11 and the second cutting blade 15, and the first cutting blade 11 is used to is cut in its longitudinal direction L, and the second cutting blade 15 cuts the PET bottle 91 after being cut by the first cutting blade 11 into a single waste piece 93 .

Due to this feature, the entire waste piece 93 is melted in a uniform state without remaining foreign substances such as non-melted materials that have not been completely melted and degraded materials that have been locally overheated and degraded. It becomes easy to obtain the slurry-like substance 94 that has been treated. Further, for example, a waste piece 93 from a well-known PET bottle 90 having a capacity of 500 ml of drinking water can be cut into fine pieces of about several millimeters at the largest dimension. Therefore, the waste piece 93 can be used as a resource without being put into the internal space 30S of the heating container 30, but in the form of a fine piece. As with the fibrous PET material 95, the recycled waste pieces 93 are light and not bulky to carry. Compared to the transportation cost of transporting the stored empty PET bottles by truck to the place of disposal, it is substantially cheaper and the cost is reduced.

Further, the recycling processing apparatus 1 according to the present embodiment is characterized by having an exhaust means 80 for sucking the atmosphere of the outer peripheral space 73S and discharging it to the outside.

With this feature, the odor and molten gas (smoke) generated when the waste pieces 93 are melted are sucked and removed by the exhaust means 80, so that people do not feel uncomfortable in terms of safety and health. can be used.

In addition, in the resource recovery processing apparatus 1 and the resin product waste resource recovery processing method according to the present embodiment, the resin product waste is, for example, an empty container containing beverage contents such as juice and drinking water. is a PET bottle 90 made of polyethylene terephthalate (PET).

Due to this feature, the countless PET bottles 90 that have been on the market in recent years can be easily recycled into the PET material 95 by the recycling processing apparatus 1 for recycling. Therefore, the resource recovery treatment apparatus 1 and the resource recovery treatment method for resin product waste can contribute to solving environmental problems that have become global issues. : Sustainable Development Goals).

In the above, the present invention has been described with reference to the embodiments, but the present invention is not limited to the above embodiments, and can be appropriately modified and applied without departing from the scope of the invention.

(1) For example, in the embodiment, the resource recovery processing apparatus 1 recycles the fibrous PET material 95 as a resource from the empty PET bottles 90 to be discarded, but the resource recovery processing apparatus according to the present invention. may be an apparatus having a structure capable of treating, as a resource, one-piece waste pieces obtained by cutting resin product waste by a waste crushing means.

(2) In addition, in the embodiment, the resource recovery processing device 1 that recycles the fibrous PET material 95 from the empty PET bottle 90 is used. The fibrous PET material 95 may be processed into general materials such as building materials compressed into plates, non-woven fabrics compressed into cloth, and bulk materials such as ingots.

(3) In the embodiment, the plastic product waste is the PET bottle 90, and the thermoplastic resin material to be recycled and recycled is the PET material 95. However, the resin material to be recycled is, for example, polyethylene (PE ), polypropylene (PP), polycarbonate (PC), and other thermoplastic resin materials. In addition, although the plastic product waste is the PET bottle 90, the plastic product waste includes containers other than the PET bottle 90, such as containers containing industrial products and the like, bags containing foodstuffs purchased at stores, and the like. Resin products sold at supermarkets, etc., including resin trays for wrapping meat and fresh fish, packaging materials, and various other resin products made of thermoplastic resin materials that have been discarded after their role has been completed. Good if

(4) In addition, in the recycling processing apparatus 1 according to the present embodiment, the temperature of the waste pieces 93 that are in the process of melting in the heating container 30 and the temperature of the completely melted slurry material 94 is measured without contact. With the sensor attached, the temperature of the slurry material 94 required to produce the fibrous PET material 95 can be precisely controlled. Further, if a rotational speed sensor that measures the rotation of the heating container 30 without contact is attached, the rotation of the heating container 30 causes the slurry substance 94 to dissipate from the holes 35, and the fibrous PET material 95 The rotation speed of the heating vessel 30 that is optimal for production can be controlled precisely.

1 resource recovery processing device 2 control means 10 crushing means (waste crushing means)
11 first cutting blade (first cutting blade)
15 second cutting blade (second cutting blade)
20 supply means (waste supply means)
21 carry-in port 22 carry-out port 23 transfer route 30 heating container (waste storage means)
30S Internal space 31 Side wall 34 Bottom 34A Central part 34B Peripheral part 35 Hole 50 Heater (heating means)
60 motor (driving means)
61 output shaft 70 cover member (cover means)
73S Peripheral space 80 Exhaust means 90 PET bottle (resin product waste)
91 Bottle part after division (Resin product waste after cutting)
93 Waste piece 94 Slurry substance 95 PET material (thermoplastic resin material)
AX Axis center L (Resin product waste) Longitudinal direction M, N Direction orthogonal to the longitudinal direction

Claims (11)

A waste resin product recycling apparatus for recycling thermoplastic resin material as a resource from resin product waste that is made of thermoplastic resin and has been subject to disposal,
Waste crushing means for breaking the resin product waste into single waste pieces by crushing;
It is formed in a bottomed cylindrical shape having an inner space capable of accommodating the waste pieces and a side wall surrounding the inner space. a waste storage means which is perforated with a size that does not allow passage of the waste pieces in a state and is disposed so as to be rotatable about an axis;
a heating means for heating the waste containing means;
a driving means for generating and transmitting a rotational force to rotate the waste containing means;
a control means;
The control means performs temperature control by the heating means and rotation control by the drive means with respect to the waste storage means in a state in which the waste pieces are stored in the internal space;
A recycling processing device for resin product waste characterized by: In the apparatus for recycling resin product waste according to claim 1,
The heating means is a heater that performs electromagnetic induction heating, and the waste storage means is made of a metal capable of generating Joule heat by electromagnetic induction,
A recycling processing device for resin product waste characterized by: In the apparatus for recycling resin product waste according to claim 1 or claim 2,
The waste storage means is connected to an output shaft for outputting a rotational force from the drive means at a central portion including the axial center of the bottom connected to the side wall,
The heating means is provided facing an outer peripheral portion outside the central portion of the bottom,
A recycling processing device for resin product waste characterized by: In the apparatus for recycling resin product waste according to any one of claims 1 to 3,
A cover means is provided outside the internal space and surrounds the waste storage means via an outer peripheral space around the waste storage means;
A recycling processing device for resin product waste characterized by: In the apparatus for recycling resin product waste according to claim 4,
The resin product waste recycling processing apparatus is used as a teaching tool, and the cover means is formed in such a manner that the outer peripheral space can be confirmed from the outside,
A recycling processing device for resin product waste characterized by: In the apparatus for recycling resin product waste according to any one of claims 1 to 5,
Waste having an inlet for charging the resin product waste, an outlet for discharging the waste pieces into the internal space of the waste storage means, and a transfer route connecting the inlet and the outlet. provided with means for supplying goods,
The waste crushing means is provided on the transfer route;
A recycling processing device for resin product waste characterized by: In the apparatus for recycling resin product waste according to claim 6,
The waste crushing means has a first cutting blade and a second cutting blade,
The first cutting blade cuts the introduced cylindrical resin product waste in its longitudinal direction or in a direction orthogonal to the longitudinal direction, and the second cutting blade cuts the first cutting. Dividing the resin product waste after cutting with a blade into single waste pieces;
A recycling processing device for resin product waste characterized by: In the apparatus for recycling resin product waste according to any one of claims 4 to 7,
An exhaust means for sucking the atmosphere of the outer peripheral space and exhausting it to the outside;
A recycling processing device for resin product waste characterized by: In the apparatus for recycling resin product waste according to any one of claims 1 to 8,
The resin product waste is an empty polyethylene terephthalate (PET) container containing food and drink contents,
A recycling processing device for resin product waste characterized by: In a method for recycling resin product waste, the thermoplastic resin material is recycled as a resource from resin product waste that is made of thermoplastic resin and has been subject to disposal,
a first step of dividing the resin product waste into single waste pieces by crushing;
It is formed in a bottomed cylindrical shape having an inner space capable of accommodating the waste pieces and a side wall surrounding the inner space. Using a waste storage means that is perforated with a size that prevents the passage of the waste pieces in a state and that is rotatable around the axis,
a second step of heating the waste containing means with the waste pieces contained in the interior space of the waste containing means;
The waste storage means is rotated, and in the execution of the second step, a slurry-like substance in which the waste pieces are melted is passed through the waste storage means through the holes by centrifugal force associated with the rotation of the waste storage means. and a third step of regenerating the thermoplastic resin material by discharging and cooling it in an outer peripheral space around the means;
A method for recycling resin product waste as a resource. In the method for recycling resin product waste according to claim 10,
The resin product waste is an empty polyethylene terephthalate (PET) container containing food and drink contents,
A method for recycling resin product waste as a resource.

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