JP2002336798A - Polymeric material classifying method and classification system therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polymeric material classifying method capable of simply and certainly classifying a polymeric material and capable of efficiently performing recycling treatment, or the like, after classification, and a classification system therefor. SOLUTION: In the polymeric material classifying method, a material containing a data presentation substance, which comprises one or more kinds of elements or compounds of them and with which the data related to the polymeric material A is correlated correspondingly to the kind and/or content of the elements or the compounds of them, is formed from the polymeric material, and the kind and/or content of the data presentation substance contained in the polymeric material A is measured and, on the basis of the measured kind and/or content of the data presentation substance, the polymeric material A is discriminated and the polymeric material A is classified on the basis of the discrimination result.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a system for separating polymer materials used for separating polymer materials such as various plastics, paints, inks and fibers.

[0002]

2. Description of the Related Art In recent years, for example, for the purpose of recycling and the like, polymer materials have been classified into types,
Sorting is performed for each manufacturing history or each manufacturer. Conventionally, such polymer materials are usually separated by physical analysis, such as analyzing specific gravity, hardness, melting point, dielectric constant, color tone, etc., of the polymer material, and chemical analysis such as infrared spectroscopy and thermal analysis. Molecular materials were identified and classified based on the results of the identification.

[0003] However, the separation of polymer materials by physical analysis requires adjustment and destruction of the materials as a pretreatment, so that it takes time and effort to separate the polymer materials. There is a problem that the material cannot be used as it is in many cases. In addition, in the case of infrared spectroscopic analysis,
If the surface has dirt, it cannot be performed accurately, and the dirt on the polymer material must be removed as a pretreatment, so that there is a problem that it takes time and labor until separation. Furthermore, in the case of thermal analysis, since the material must be once dissolved, it takes time and labor until separation, and the polymer material often cannot be used as it is for recycling processing after separation. was there.

Therefore, it is conceivable to engrave and display information on the polymer, such as the type of polymer material, manufacturing history, and manufacturer, on the polymer material, and to sort the polymer material based on the engraved indication. .

However, if information about the polymer material is imprinted and displayed on the polymer material, the appearance and color tone of the polymer material are affected. Therefore, the minimum necessary information on the polymer material is placed at the corner of the polymer material. Must be marked small. For this reason, not only is the identification of the polymer material difficult due to the small size of the marking, but also the marking is erased by some external mechanical action, making it impossible to identify the polymer material. There was a problem that it became difficult to separate molecular materials.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and can easily and surely separate a polymer material, and can efficiently perform a recycling process after the separation. It is an object of the present invention to provide a method for separating polymer materials and a system for separating the same.

[0007]

In order to achieve the above object, a method of separating a polymer material according to the present invention comprises the steps of: separating a polymer material from one or more elements or compounds thereof; It is made into a material containing an information presenting substance in which information on the polymer material is associated with the type and / or content, and the type and / or content of the information presenting substance contained in the polymer material Is measured, a polymer material is identified based on the type and / or content of the measured information presenting substance, and the polymer material is separated based on the identification result.

[0008] That is, the method for separating polymer materials is as follows.
The polymer material has information about the polymer, such as its type information, manufacturing history information, and true / false discrimination information, cryptographically, and information about the polymer material contained in such a polymer material. Is read to separate the polymer material.

According to the method for separating a polymer material, it is not necessary to prepare, destruct, remove dirt, and dissolve the polymer material, and it is possible to separate the polymer material without spending time and effort. .

[0010] Further, since the information presenting substance contained in the polymer material does not disappear or change, the polymer material can be surely separated using a technique such as spectrum analysis.

Further, since the type and / or content of the information presenting substance contained in the polymer material can be variously set, general types of polymer materials are classified by type, manufacturing history, manufacturer, etc. It is possible not only to sort by information, but also to finely separate the same kind of polymer material by composition, molecular weight, polymerization degree or grade.

Further, since the pretreatment of the polymer material is not necessary as described above, the polymer material can be used as it is in the recycling process after the separation, and the separation of the polymer material can be performed easily and reliably. Together with this, it is possible to efficiently perform the recycle processing after the separation.

[0013] The system for separating a polymer material according to the present invention comprises one or more kinds of elements or compounds thereof, and information on the polymer material is associated with the kind and / or content thereof. For a polymer material containing an information presenting substance, a measuring means for measuring the type and / or content of the information presenting substance contained in the polymer material, and the type of the information presenting substance measured by the measuring means And / or identification means for identifying the polymer material based on the content, and separation means for separating the polymer material based on the identification result of the identification means.

[0014] According to this, the polymer material can be easily and reliably separated, and the recycling process after the separation can be efficiently performed.

Preferably, the measuring means measures the type and / or content of the information presenting substance contained in the polymer material by spectrum analysis.

According to this, the type and / or content of the information presenting substance can be measured simply and reliably.
The polymer material can be separated more easily and reliably.

Further, the identification means refers to a reference table set so that the type and / or content of the information presenting substance and the information on the polymer material correspond to each other, so that the information is measured by the measurement means. It is desirable to identify the polymer material by specifying information on the polymer material based on the type and / or content of the information presenting substance.

According to this, a series of processes of measuring the type and / or content of the information presenting substance contained in the polymer material and identifying the polymer material based on the measurement are automatically performed. This makes it possible to separate the polymer material more easily and reliably.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the polymer material according to the present invention will be described.

The polymer material is composed of one or more elements or compounds thereof, and contains an information presenting substance associated with information on the polymer material in accordance with the type and / or content. It is made to be.

Examples of the polymer material include various plastic materials, paints, inks, fibers, and the like. In addition to the material in which an information presenting substance is added to the polymer material, the information presentation material is included in the polymer material. The substance may be introduced by chemical bonding such as polymerization, cross-linking, or ionic bonding, or may be a substance in which an information presenting substance is applied to the surface of the polymer material.

In order to easily and surely measure the type and / or content of the information presenting substance, one or more kinds of general-purpose polymer materials which are not generally contained in various kinds of polymer materials are used. Or compounds thereof (oxides, sulfides, organic oxides, etc.) are preferred.

As such elements which are not generally contained in various general-purpose polymer materials, element number 3
Elements from 1 to 88, preferably lanthanoid elements, more preferably neodymium (Nd), promethium (Pm), samarium (Sm), eurobium (Eu),
It is preferable to use gadolinium (Gd), terbium (Tb), and holmium (Ho) in one kind or in a combination of two or more kinds.

These elements are hardly contained in various plastics, paints, inks and fibers.
It is also preferable because it can be easily measured by spectral analysis using X-rays described below, is economical and sanitary, has no effect on the physical properties of the material, and is easily available as a compound such as an oxide. It is preferable to use an information presenting substance in the form of fine particles of 10 μm or less.

It is preferable that the information presenting substance is contained in a small amount that does not affect the intrinsic properties of the polymer material in order to suppress the influence on the appearance and physical properties of the polymer material.

The range of the minute amount that does not affect the intrinsic properties of the polymer material may vary depending on the type of the polymer material and the like, but preferably ranges from 0.1 ppm to 1000 ppm based on the polymer material. (Including 0.1 ppm and 1000 ppm), more preferably from 0.5 ppm to 200 ppm (including 0.5 ppm and 1000 ppm).

The reason why the concentration is set to 0.1 ppm or more is mainly due to the relationship with the accuracy of the fluorescent X-ray analyzer generally used in the present use. This is because it does not affect the appearance and physical properties of the molecular material. Also, within the range, 0.5 ppm to 2 ppm
The reason for setting the concentration to 00 ppm is to ensure that the reliability of the measurement is sufficiently high, reduce the economic burden, and minimize the influence on the intrinsic properties of the polymer material.

The information on the polymer material is not particularly limited. In addition to the information on the polymer material itself, such as the type of the polymer material, the manufacturing history, and the manufacturer, the polymer material is used. It may be information about a product.

For example, as shown in Table 1 below, the information on the polymer material is the type of the polymer material (a, b, c), the type of the polymer material (a, b, c) and the information presenting substance. (X, Y, Z), the type a, b, or c of the polymer material can be specified if the information presenting substance X, Y, or Z is measured.

[0030]

[Table 1]

Further, as shown in Table 2 below, information on the polymer material is obtained from the polymer material manufacturer (A, B, C).
In the case where the manufacturers (A, B, C) of these polymer materials correspond to the contents (α, β, γ) of the information presenting substance, the content α, β, or γ of the information presenting substance is about Once measured, manufacturer A, B, or C can be identified.

[0032]

[Table 2]

Further, the information on the polymer material may be expressed as numerical data of one or more digits corresponding to the type and / or content of the information presenting substance.

For example, as shown in Table 3 below, information on the polymer material is converted into numerical data of a plurality of digits, each digit corresponding to the type (X, Y, Z) of the information presenting substance, and When the numerical values correspond to the content of the information presenting substance, if the types X, Y, and Z of the information presenting substance and the respective contents (peak values) are measured, it is possible to specify the numerical data of the information on the polymer material. it can.

According to this, the numerical data has barcode-like information, and various information can be easily included in the polymer material. In particular, if the numerical data has a plurality of digits, more information can be easily included in the polymer material. Also, if numerical data is an ID number,
An ID card that is extremely effective in preventing forgery can be made.

In the example shown in Table 3 below, the content (peak value) of the information presenting substance is multiplied by 10 and rounded to use as numerical data.

[0037]

[Table 3]

The method for containing the information presenting substance of the polymer material is not particularly limited, and may be a method according to the type of the polymer material or the information presenting substance. For example, when the polymer material is plastic, a method of directly molding after dry blending with a drum tumbler or the like, a method of compounding with an extruder, a method of performing compounding or molding with an internal mixer or a heating roll, and the like are mentioned. Can be Moreover, you may implement after using it as a masterbatch.

When the information presenting substance is contained in the polymer material, a fatty acid amide, a metal salt of a fatty acid, or a fatty acid ester may be used as a lubricant in order to ensure uniform distribution and dispersion.

When a plurality of information presenting substances are contained in the polymer material, each information presenting substance may be separately contained in the polymer material, or each information presenting substance may be contained simultaneously in the polymer material. It may be a thing.

Next, a polymer material separation system for separating the polymer material (A) will be described with reference to FIGS.

As shown in FIG. 4, the polymer material identification system includes a detecting device (1) for detecting an information presenting substance contained in the polymer material (A), and a detecting device (1) for detecting the information presenting substance. An identification device (2) for identifying the polymer material (A) based on the information presenting substance, and a separation device for separating the polymer material (A) based on the identification result of the identification device (2). The detecting device (1) and the discriminating device (2), and the discriminating device (2) and the sorting device (3) are respectively connected via communication lines.

Further, (4) is an endless belt conveyor which is driven to rotate in the direction of the white arrow in FIG. 4, and the polymer material (A) placed at the start end by the rotation is driven to the end. It is to be transported. The detection device (1) is installed at a position between the start end and the center of the belt conveyor (4) so as to cover the belt conveyor (4). At the side position of the start end of the belt conveyor (4), the sorting device (3) is installed in a state of being arranged in parallel with the belt conveyor.

(5) is a storage box for storing the polymer material (A), and the storage boxes (5a), (5b) and (5c).
Are arranged side by side at the side position of the belt conveyor (4) so as to face the sorting device (3), and the storage box (5d) is installed at the end of the end portion of the belt conveyor (4).

The polymer material (A) placed at the start end is conveyed to the place where the detection device (1) is installed by the rotational drive of the belt conveyor (4), where it is used to detect the information presenting substance. After stopping for a predetermined time, the belt is again conveyed to the end by the rotational drive of the belt conveyor (4). The polymer material (A) conveyed to the end of the belt conveyor (4) is stored in one of the storage boxes (5a), (5b), and (5c) by the separation device (3), or as it is. It is stored in the storage box (5d) as it is according to the rotational drive of the belt conveyor (4).

Hereinafter, the detection device (1), the identification device (2), and the classification device (3) will be described in detail.

As shown in FIG. 5, the detection device (1) is a known detection device for detecting X-ray fluorescence, and an X-ray generation tube (1) for generating X-rays and irradiating the polymer material (A) with the X-rays. 11)
And an X-ray detector (12) for detecting fluorescent X-rays generated from the polymer material (A) irradiated with the X-rays.

In the X-ray generating tube (11),
X-rays are generated, and the X-rays are irradiated on the polymer material (A) on the belt conveyor (4) that has reached the inside of the detection device (1). Are generated, various X-rays are generated.
It is detected by a line detector (12). The detected energy value and / or intensity value of the fluorescent X-ray is appropriately amplified by a preamplifier or a linear amplifier (not shown), and is converted into a digital signal by an A / D converter (not shown). ).

The above-described detection processing by the detection device (1) is performed by a known sensor (not shown) provided in the detection device (1). , And after the belt conveyor (4) stops according to a request from the sensor.

As shown in FIG. 6, the identification device (2) includes a control unit (21) and a storage unit (22) for storing a reference table. In this reference table, as shown in, for example, Tables 1 and 2, the type and / or content of the information presenting substance and the information on the polymer material (A) are set so as to correspond to each other.

The control section (21) comprises a central processing unit (CPU) and the like, and controls each section, transfers data,
Performs various calculations and temporary storage of data. In this embodiment, as shown in FIG. 7, the reception function (211), the selection function (212), the calculation function (213), and the identification function (2)
14), and has a transmission function (215). In addition, the control unit (2) in the detection device (1) and the identification device (2).
The receiving function (211), the sorting function (212), and the calculating function (213) of 1) constitute a measuring means for measuring the type and / or content of the information presenting substance.

The receiving function (211) is a function for receiving the energy value and / or the intensity value of various fluorescent X-rays in the polymer material (A) transmitted from the detecting device (1).

The sorting function (212) is for selecting one or a plurality of information presenting substances from the energy value and / or intensity value of various fluorescent X-rays in the polymer material received by the receiving function (211). This is a function of selecting the energy value and / or intensity value of the fluorescent X-ray.

The calculating function (213) is based on the energy and / or intensity value of the fluorescent X-rays of one or more information presenting substances selected by the selecting function (212), and And / or a function for calculating the content.

As described above, the reception function (2) of the control unit (21) in the detection device (1) and the identification device (2) is used.
11), sorting function (212) and calculation function (213)
Thus, the type and / or content of the information presenting substance contained in the polymer material (A) can be measured.

The identification function (214) refers to a reference table stored in the storage unit (22) to determine the type and / or content of the information presenting substance calculated by the calculation function (213). Is a function of identifying the polymer material (A) by specifying information on the polymer material (A) based on the information.

The transmitting function (215) transmits one of the identification signals a to d to the sorting device (3) based on the result of the identification of the polymer material (A) by the identification function (214). Function.

As shown in FIG. 4, the separating device (3) is provided with three extruded portions (3a), (3b), and (3c) that expand and contract in the width direction of the belt conveyor (4). The identification signals a, b, transmitted from the identification device (2)
The polymer material (A) is separated based on c and d.

More specifically, the sorting device (3)
Is an identification signal a, b, or c from the identification device (2).
Is transmitted, the extruding units (3a), (3b),
Or, by driving (3c) to extend the belt conveyor (4) in the width direction, the polymer material (A) on the belt conveyor (4) is extruded in the width direction of the belt conveyor (4), and the storage box (5a), (5b) or (5c). The separating device (3) stores the polymer material (A) in the storage box (5a), (5b), or (5c) so as to drop it, and then pushes the extruded portion (3a), (3b), or (3c) is driven in the reverse direction to contract to the original position.

When the identification signal (d) is transmitted from the identification device (2), the separation device (3) does not drive any of the extruding portions (3a), (3b), and (3c).
The polymer material (A) is accommodated so as to be dropped into the accommodation box (5d) as it is driven by the rotation of the belt conveyor (4).

The above-mentioned separation processing by the separation device (3) is performed by a known sensor (not shown) provided in the separation device (3), and the polymer material (A) is extruded into the extruded portions (3a), (3).
b) or that it has reached the front of (3c),
The extruding sections (3a), (3
This is performed by extruding b) or (3c).

Next, a method for identifying the polymer material (A) will be described with reference to flowcharts shown in FIGS. In the following description and drawings, “step” is abbreviated as “S”.

First, with the polymer material (A) placed on the start end of the belt conveyor (4), the belt conveyor (4)
When the is rotated, the polymer material (A) is transported to a predetermined location in the detection device (1), where the information presentation substance is detected by the detection device (1) by the above-described method (S1).

Next, the identification device (2) identifies the polymer material (A) based on the information presenting substance detected by the detection device (1) (S2).

More specifically, as shown in FIG.
In S21, the identification device (2) receives the reception function (21
According to 1), the energy value and / or intensity value of various fluorescent X-rays in the polymer material (A) transmitted from the detection device (1) are received, and the process proceeds to S22.

In step S22, the sorting function (212) presents one or more information from the energy and / or intensity values of various fluorescent X-rays in the polymer material received by the receiving function (211). The energy value and / or intensity value of the fluorescent X-ray of the substance is selected, and S
Proceed to 23.

In step S23, the energy value of the fluorescent X-ray and / or the energy value of one or a plurality of information presenting substances selected by the selection function (212) are calculated by the calculation function (213).
Or, based on the intensity value, the type and / or
Alternatively, the content is calculated, and the process proceeds to S24.

In S24, the identification function (214) refers to the reference table stored in the storage section (22), and thereby the type and / or type of the information presenting substance calculated by the calculation function (213). Based on the content, the information on the polymer material (A) is specified to identify the polymer material (A), and the process proceeds to S25.

In S25, any one of the identification signals a, b, c and d is transmitted by the transmission function (215) based on the result of the identification of the polymer material (A) by the identification function (214).

Next, in the separation device (3), the polymer material (A) conveyed to the end of the belt conveyor (4)
Are classified based on the identification signals a, b, c, and d transmitted from the identification device (2) (S3).

More specifically, as shown in FIG. 10, the classification device (3) determines whether any of the identification signals a, b, c, and d has been received from the identification device (2) in S31. And if it is determined that it has been received (YE in S31)
S), and proceed to S32. On the other hand, if it is determined in S31 that the data has not been received (NO in S31), the determination processing in S31 is repeated.

In S32, it is determined whether or not the identification signal received from the identification device (2) is a. If it is determined that the identification signal is a (YES in S32), the process proceeds to S33 and the extruding section By driving and expanding (31a), the polymer material (A) is extruded in the width direction of the belt conveyor (4) and is housed so as to be dropped into the housing box (5a). On the other hand, if it is determined in S32 that the identification signal is not a (NO in S32), the process proceeds to S34.

In S34, it is determined whether or not the identification signal transmitted from the identification device (2) is b. If it is determined that the identification signal is b (YES in S34), S35 is performed.
The polymer material (A) is extruded in the width direction of the belt conveyor (4) by driving and extending the extruding portion (31b), and is housed so as to be dropped into the housing box (5b). On the other hand, if it is determined in S34 that the identification signal is not b (NO in S34), the process proceeds to S36.

In S36, it is determined whether or not the identification signal transmitted from the identification device (2) is c. When it is determined that the identification signal is c (YES in S36), S37 is performed.
Then, the extruding section (31c) is driven to expand, whereby the polymer material (A) is extruded in the width direction of the belt conveyor (4), and is housed so as to be dropped into the housing box (5c).

On the other hand, if it is determined in S36 that the identification signal is not c (NO in S36), the routine returns. At this time, since the polymer material (A) is not extruded into any of the extruded portions (3a), (3b), and (3c) of the sorting device (3), the polymer material (A) is directly extruded from the end portion according to the rotational drive of the belt conveyor (4). It is stored so as to be dropped into the storage box (5d).

As described above, the polymer material (A) cryptographically has information about the polymer such as the type information of the polymer material, the manufacturing history information, and the authenticity discrimination information. Polymer material (A) contained in polymer material (A)
Since the polymer material (A) is separated by reading information about the polymer material, pretreatment such as preparation, destruction, removal of dirt, and dissolution of the polymer material (A) is not required, and the polymer material (A) does not require much time and labor. Can be separated.

Since the information presenting substance contained in the polymer material (A) does not disappear or change,
The polymer material (A) can be surely separated using a technique such as spectrum analysis.

Further, since the type and / or content of the information presenting substance contained in the polymer material can be variously set, general types of polymer materials, such as by type, manufacturing history, and manufacturer, can be used. It is possible not only to sort by information, but also to finely separate the same kind of polymer material by composition, molecular weight, polymerization degree or grade.

Further, since the pretreatment of the polymer material (A) is not necessary as described above, the polymer material (A) can be used as it is in the recycling process after the separation, and the polymer material (A) can be used. Along with the simple and reliable separation of A), it is possible to efficiently perform the recycle processing after the separation.

In this embodiment, the type and / or content of the information presenting substance is measured by spectral analysis of fluorescent X-rays. However, other types of X-rays, electron beams, neutron rays, and electromagnetic waves are measured. It may be performed by spectral analysis or by a method not based on spectral analysis. In particular, spectral analysis using X-rays (fluorescent X-ray analysis) is advantageous because it can be measured with a small and simple device.

The absolute content of the information-presenting substance may be measured. However, in spectral analysis such as X-ray fluorescence analysis, the information-presenting substance depends on the shape, size, surface condition and the like of the polymer material (A). The intensity value of the spectrum of the presentation substance changes,
Since quick and easy measurement may not be possible, in such a case, the relative content of the information presenting substance based on the content of the reference substance may be measured. That is, a substance originally contained in the polymer material (A), a substance included in the polymer material (A) together with the information presenting substance, or another information presenting substance is used as the reference substance, and the reference substance and the information presentation are used. The relative content of the information presentation substance may be measured based on the content of the reference substance using the relative ratio of the intensity values of the spectrum of the substance.

The absolute content of the information presenting substance may be measured, but the measured value of the absolute content of the information presenting substance varies depending on the shape, size, surface condition, etc. of the polymer material (A). In such a case, the relative content of the information presenting substance may be measured based on the content of the reference substance. That is, a substance originally contained in the polymer material (A) or a substance (may be an information presenting substance) contained in the polymer material (A) together with the information presenting substance is used as a reference substance. The relative content of the information presenting substance is measured based on the content of.

Further, the separation apparatus separates the above-mentioned polymer material (A) by extruding it by the extruding sections (31a), (31b) and (31c). However, the present invention is not limited to this. May be separated by the above method. In short, the separation device may be any device that separates the polymer material (A) based on the identification result of the identification device (2).

Although the belt conveyor (4) is used as a means for transporting the polymer material (A), other devices may be used.

[0085]

According to the first aspect of the present invention, the polymer material has information about the polymer in a cryptographic manner, such as the type information of the polymer material, the manufacturing history information, and the authenticity discrimination information. Therefore, since the polymer material is separated by reading information on the polymer material contained in such a polymer material, pretreatment such as adjustment, destruction, removal of dirt, and dissolution of the polymer material is not required. The polymer material can be separated without spending time and effort.

Since the information presenting substance contained in the polymer material does not disappear or change, the polymer material can be surely separated by using a technique such as spectrum analysis.

Further, since the type and / or content of the information presenting substance contained in the polymer material can be variously set, general types of polymer materials, such as by type, manufacturing history, and manufacturer, can be used. It is possible not only to sort by information, but also to finely separate the same kind of polymer material by composition, molecular weight, polymerization degree or grade.

Further, since the pretreatment of the polymer material is not required as described above, the polymer material can be used as it is in the recycling process after the separation, and the separation of the polymer material can be performed easily and reliably. Together with this, it is possible to efficiently perform the recycle processing after the separation.

According to the second aspect of the present invention, it is possible to easily and surely separate the polymer material, and it is possible to efficiently perform the recycling process after the separation.

According to the third aspect of the present invention, the type and / or content of the information presenting substance can be measured simply and reliably, and the polymer material can be separated more easily and reliably. .

According to the fourth aspect of the present invention, a series of processing of measuring the type and / or content of the information presenting substance contained in the polymer material and identifying the polymer material based on the measurement is performed. This can be performed automatically, and the polymer material can be more easily and reliably separated.

[Brief description of the drawings]

FIG. 1. (a) ABS not containing holmium oxide
It is a spectrum analysis figure of resin. (B) A spectrum analysis diagram of an ABS resin containing 1 ppm of holmium oxide. (C) Spectrum analysis of an ABS resin containing 10 ppm of holmium oxide.

FIG. 2A is a spectrum analysis diagram of a PE resin containing no samarium oxide. (B) A spectrum analysis diagram of a PE resin containing 1 ppm of samarium oxide. (C) is a spectrum analysis diagram of a PE resin containing 10 ppm of samarium oxide.

FIG. 3A is a spectrum analysis diagram of a PP resin containing no neodymium oxide. (B) A spectrum analysis diagram of a PP resin containing 1 ppm of neodymium oxide. (C) is a spectrum analysis diagram of a PP resin containing 10 ppm of neodymium oxide.

FIG. 4 is a schematic configuration diagram of a polymer material separation system according to an embodiment of the present invention.

FIG. 5 is a schematic configuration diagram of a detection device (1) of FIG.

FIG. 6 is a schematic configuration diagram of the identification device (1) of FIG.

FIG. 7 is a schematic configuration diagram of a control unit in FIG. 6;

FIG. 8 is a flowchart showing the operation of the polymer material sorting system.

FIG. 9 is a flowchart showing the operation of the identification device.

FIG. 10 is a flowchart showing the operation of the sorting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Detection device 2 ... Identification device 3 ... Sorting device 31 ... Extruding part 4 ... Belt conveyor 5 ... Storage box

Claims (4)

[Claims] 1. A polymer material containing one or more elements or compounds thereof, and an information presenting substance associated with information on the polymer material in accordance with the type and / or content thereof. The type of information presenting substance contained in the polymer material and / or
Alternatively, the polymer is characterized in that the content is measured, the polymer material is identified based on the type and / or content of the measured information presenting substance, and the polymer material is separated based on the identification result. Material separation method. 2. A polymer comprising one or more elements or compounds thereof, and containing an information presenting substance associated with information on the polymer material in accordance with the type and / or content thereof. A measuring means for measuring the type and / or content of the information presenting substance contained in the polymer material, and a polymer based on the type and / or content of the information presenting substance measured by the measuring means. A polymer material separation system, comprising: identification means for identifying a material; and separation means for separating the polymer material based on the identification result of the identification means. 3. The system for separating a polymer material according to claim 2, wherein the measuring means measures the type and / or content of the information presenting substance contained in the polymer material by spectrum analysis. 4. The identification means refers to a reference table set so that the type and / or content of the information presenting substance and the information on the polymeric material correspond to each other, and is measured by the measurement means. The polymer material separation system according to claim 2 or 3, wherein the polymer material is identified by specifying information on the polymer material based on the type and / or content of the information presenting substance.