Method and system for recycling labeled glass products

Abstract

To provide a method and a system for reutilizing a glass product with a label which can reutilize a glass product and a label constituting a glass product with a label.SOLUTION: A reutilization system 10 reutilizes a glass product X with a label where a label L is stuck to a glass product G. The glass product X with the label uses a molding molded by blending inorganic substance powder containing a calcium component, a thermoplastic resin and an adjuvant as the label L with a predetermined blending ratio. The reutilization system 10 includes a crushing part 20 which performs crushing processing of crushing the glass product G and the label L constituting the collected glass product X with the label, and forming a crushed mixture including a crushed product of the glass and the label L, a heating melting part 30 which performs heating melting processing of heating and melting a glass material including the crushed mixture and forming the glass material into a molten product, and a molding part 40 which performs molding processing of molding the molten product.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method and system for recycling labeled glass products. [Background technology]

[0002] Conventionally, as disclosed in the following Non-Patent Documents 1 and 2, glass bottles have been reused in the form of reuse and recycling. Specifically, as disclosed in Non-Patent Document 1, glass bottles can be reused in a form called reuse, in which collected used bottles are washed and reused repeatedly. In addition, as disclosed in Non-Patent Document 2, glass bottles can also be reused in a form called recycling, in which cullet obtained by crushing used bottles into small pieces is used to make new glass products such as bottles. Therefore, glass bottles can be said to be containers that place less of a burden on the environment. [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] Glass Bottle 3R Promotion Council website (https: / / www.glass-3r.jp / learn / reuse.html) [Non-Patent Document 2] Glass Bottle 3R Promotion Council website (https: / / www.glass-3r.jp / learn / recycle.html) Summary of the Invention [Problem to be solved by the invention]

[0004] Here, labels attached to glass products such as glass bottles become impurities when the glass is recycled. Therefore, when recycling glass, the labels are removed from the glass products and are not utilized in the recycling of the glass products. In addition, in the conventional technology, when a labeled glass product is reused, the glass product is reused, but the removed labels are not utilized as resources. Thus, in the conventional technology, when a labeled glass product is reused through recycling or reuse, the glass product can be utilized, but the label cannot be utilized sufficiently.

[0005] SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide a method and system for recycling labeled glass products, which allows not only the glass products that constitute the labeled glass products but also the labels to be recycled. [Means for solving the problem]

[0006] (1) A method for recycling labeled glass products provided to solve the above-mentioned problems is a method for recycling labeled glass products in which a label is affixed to a glass product, wherein the label is a molded product formed by mixing an inorganic substance powder containing a calcium component, a thermoplastic resin, and an auxiliary agent in a predetermined mixing ratio, and the method is characterized in that a glass product is formed through a process including: a recovery process for recovering the labeled glass products; a crushing process for forming a crushed mixture containing glass and crushed material of the label from the labeled glass products recovered in the recovery process; a heating and melting process for heating and melting a glass raw material containing the crushed mixture to form a molten material; and a molding process for molding the molten material.

[0007] In the method for recycling labeled glass products of the present invention, a molded product formed by blending inorganic powder containing a calcium component is used as the label. In addition, in the crushing step, a crushed mixture containing crushed glass and label is formed from the labeled glass products recovered in the recovery step. Therefore, in the method for recycling labeled glass products of the present invention, the label is crushed in the same manner as the glass, and the crushed glass and label are mixed into a crushed mixture. Furthermore, in the present invention, a glass raw material containing the crushed mixture is heated and melted in the heating and melting step to form a melt, and then the melt is molded in the molding step to form a glass product. In this way, in the method for recycling labeled glass products of the present invention, not only the glass products constituting the labeled glass products but also the labels can be recycled. Therefore, according to the present invention, a method for recycling labeled glass products that has a lower environmental impact than the glass recycling method performed in the prior art can be provided.

[0008] (2) The method for recycling labeled glass products described above may be characterized in that, in the heating and melting step, at least one of silica sand, soda ash, and lime is added as the glass raw material depending on the amount of calcium component derived from the label contained in the crushed mixture.

[0009] According to this method, the amounts of silica sand, soda ash, and lime can be adjusted according to the amount of calcium component derived from the labels contained in the ground mixture, making it possible to prepare a glass raw material having an optimal composition ratio for producing glass products.

[0010] Here, the above-mentioned method for recycling labeled glass products can remove the labels from the labeled glass products collected in the collection process, and then crush the glass products and the labels separately in the crushing process, and then mix the crushed products to form a crushed mixture. However, since the work of removing the labels from the glass products is time-consuming, if it can be omitted, it will lead to a significant reduction in the number of steps.

[0011] (3) Based on this knowledge, the above-mentioned method for recycling labeled glass products may be characterized in that, in the crushing step, the labeled glass products are crushed with the label still attached to the glass product.

[0012] According to this method, the number of steps required to form the pulverized mixture in the crushing process can be significantly reduced compared to a method in which the glass product and the label are crushed separately in the crushing process and then the crushed products of both are mixed to form the pulverized mixture.

[0013] (4) The above-mentioned method for recycling labeled glass products may further include a quality inspection process for inspecting the quality of the labeled glass products recovered in the recovery process, and a cleaning process for cleaning the labeled glass products determined in the quality inspection process to be capable of being restored to a reusable quality by cleaning, and may be characterized in that the labeled glass products determined in the quality inspection process to be incapable of being restored to a reusable quality by cleaning are crushed in the crushing process.

[0014] According to this method, labeled glass products that are determined to be able to be restored to reusable quality by washing can be reused by washing in the washing step. Also, according to the above-mentioned method, labeled glass products that are determined to be unable to be restored to reusable quality by washing can be crushed and reused in the crushing step. Therefore, according to the above-mentioned method, the labeled glass products can be reused in an appropriate manner depending on whether the collected labeled glass products are in a state where they can be restored to reusable quality by washing or not.

[0015] (5) The above-mentioned method for recycling labeled glass products may further include a separation step of removing the label from the labeled glass product determined in the quality inspection step to be able to be restored to reusable quality by washing, and separating the label from the glass product, and a label recycling step of recycling the label removed in the separation step, wherein the glass product from which the label has been removed in the separation step is washed in the washing step.

[0016] According to this method, for labeled glass products that are determined in the quality inspection step to be able to be restored to reusable quality by washing, the labels removed in the separation step can be recycled in the label recycling step. Also, glass products from which the labels have been removed in the separation step can be reused by washing them in the washing step. Therefore, according to the above-mentioned method, in addition to glass products that can be reused by washing, the removed labels can also be utilized as resources.

[0017] (6) The recycling system of the present invention, which is provided to solve the above-mentioned problems, is a recycling system for recycling labeled glass products in which a label is affixed to a glass product, wherein the label is made of a molded product formed by mixing inorganic substance powder containing a calcium component, a thermoplastic resin, and an auxiliary agent in a predetermined mixing ratio, and is characterized by comprising: a crushing section that performs a crushing process to crush the glass product and the label that constitute the recovered labeled glass product to form a crushed mixture containing glass and crushed material of the label; a heating and melting section that performs a heating and melting process to heat and melt a glass raw material containing the crushed mixture into a molten material; and a molding section that performs a molding process to mold the molten material.

[0018] The recycling system of the present invention can crush the glass products and labels constituting the collected labeled glass products in the crushing section, and form a crushed mixture containing crushed glass and labels, for labeled glass products in which a molded product formed by blending inorganic substance powder containing a calcium component is affixed as a label. The recycling system of the present invention can also heat and melt a glass raw material containing the crushed mixture in the heating and melting section to form a melt. Furthermore, the recycling system of the present invention can obtain a new molded product by molding the melt formed in the heating and melting section in the molding section. In this way, the recycling system of the present invention can reuse not only the glass products constituting the labeled glass products, but also the labels. Therefore, the recycling system of the present invention can realize a method for recycling labeled glass products that has a lower environmental impact than the glass recycling method performed in the prior art. Effect of the Invention

[0019] According to the present invention, it is possible to provide a method and a system for recycling labeled glass products, which allows not only the glass products that constitute the labeled glass products but also the labels to be recycled. [Brief description of the drawings]

[0020] [Figure 1] 1 is a schematic diagram showing a method and system for recycling labeled glass products according to a first embodiment of the present invention. FIG. [Diagram 2] 1 is a schematic diagram showing a method and system for recycling labeled glass products according to a second embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] [First embodiment] Hereinafter, a method for recycling labeled glass products according to a first embodiment of the present invention and a recycling system 10 for implementing this method will be described.

[0022] In the present embodiment, the method and system 10 for recycling labeled glass products is for recycling labeled glass products X, such as glass bottles, which are treated as resources. In the present embodiment, the labeled glass products X are treated by using a molded product obtained by mixing inorganic powder containing a calcium component, a thermoplastic resin, and an auxiliary agent at a predetermined mixing ratio, and the molded product is attached to the glass product G by a method such as pasting. The inorganic powder constituting the label L may be one or more selected from the group consisting of calcium carbonate, clay, silica, titanium oxide, talc, kaolin, and aluminum hydroxide. The thermoplastic resin constituting the label L may be, for example, a polyolefin resin such as polypropylene, high density polyethylene, or low density polyethylene, a vinyl resin such as polyvinyl chloride or polystyrene, a polyester resin such as polyethylene terephthalate, or a recycled resin. The above-mentioned thermoplastic resin may be one selected from these, or may be a mixture of two or more. The auxiliary agent constituting the label L may be, for example, one or more selected from a lubricant, a coupling agent, an antioxidant, an ultraviolet absorber, a coloring agent, a coloring pigment, a flow improver, a dispersant, a stabilizer, an antistatic agent, a flame retardant, etc.

[0023] <About Reuse System 10> Next, the configuration of the recycling system 10 will be described with reference to Fig. 1. The recycling system 10 is a system for realizing a method for recycling a labeled glass product X. The recycling system 10 includes a crushing unit 20, a heating and melting unit 30, and a molding unit 40.

[0024] The crushing section 20 performs a process (crushing process) for crushing the glass product G and the label L constituting the collected labeled glass product X to form a crushed mixture containing crushed products of the glass product G and the label L. The crushing section 20 may crush the labeled glass product X in its original state, which is the glass product G with the label L affixed thereto, or may remove the label L from the collected labeled glass product X, crush the glass product G and the label L separately, and then produce a crushed mixture containing crushed products of both.

[0025] The heating and melting section 30 performs a process (heating and melting process) in which the pulverized mixture obtained in the pulverizing section 20, which contains a part or all of the raw material (glass raw material) for producing a glass product, is heated and melted to produce a molten material. The heating and melting section 30 may be constituted by a large-scale glass melting furnace such as a Siemens-type continuous furnace, or a small-scale melting furnace such as an optical furnace or a hand-blowing furnace.

[0026] In the molding section 40, the molten material obtained by melting the glass raw material including the crushed mixture in the heating and melting section 30 is removed from the melting furnace, molded, and slowly cooled to produce a glass product G in the form of, for example, a glass bottle, or in the form of cullet that can be used as a raw material for the glass product G.

[0027] <How to reuse glass products with labels> Next, a method for recycling a labeled glass product will be described. The method for recycling a labeled glass product of this embodiment is carried out in the flow shown in FIG. 1. Specifically, a label L is attached (labeling) to a glass product G manufactured in the form of a glass bottle or the like by a manufacturer of the glass product G or a food and beverage manufacturer that fills the glass product G with beverages, foods, etc. to manufacture the product. In this way, a labeled glass product X is formed. At an appropriate timing before or after the labeling, a food and beverage manufacturer fills the glass product G with beverages, foods, etc. and seals (capping) the glass product G. In this way, a product P in which a beverage or food is sealed in a labeled glass product X is delivered to a consumer through a specified distribution route, for example, via a seller such as a wholesaler or a retailer. When a consumer who has purchased the product P finishes consuming the beverage, food, etc., the consumer discards the labeled glass product X. The discarded labeled glass product X is collected together with other waste at a facility such as a resource center by, for example, waste collection provided by a government service or collection work by an industrial waste collection company. In the method for recycling labeled glass products of the present embodiment, the labeled glass products X contained in waste collected in the above manner at a resource recycling center or the like are made recyclable by the recycling system 10.

[0028] Specifically, labeled glass products X collected as waste are subjected to a process of crushing (crushing process) in the crushing section 20 after removing caps, foreign objects, etc. From this, the labeled glass products X are made into a crushed mixture containing crushed glass products G and labels L. Thereafter, the crushed mixture formed in the crushing section 20 is heated and melted in a furnace constituting the heating and melting section 30 as part or all of the glass raw material for producing the glass products G (heating and melting process).

[0029] Here, in the heating and melting section 30, if the crushed mixture formed from the labeled glass product X contains each component in an optimal composition ratio for forming a new glass product G, it is preferable to heat and melt it without adding other components. In this way, a new glass product G in which all of the components are derived from the used labeled glass product X can be obtained. Also, if the composition ratio of various components contained in the crushed mixture formed from the labeled glass product X is not optimal for forming a new glass product G, it is preferable to add the missing components to the crushed mixture. For example, when the weight of silicon oxide is 100, the standard blend ratio is set to 27 by weight of calcium carbonate, 28 by weight of sodium carbonate, 1.5 by weight of sodium sulfate, and 0.1 by weight of carbon, and the blend ratio of each component is changed according to the characteristics of the glass to be manufactured (e.g., viscosity, etc.), thereby blending the raw materials. When blending the raw materials in this way, the crushed labeled glass product X can be used as part of the glass raw material for forming the new glass product G by adding the missing components in addition to the crushed labeled glass product X.

[0030] Moreover, the label L contains a predetermined amount (predetermined ratio) of inorganic powder containing a calcium component. Therefore, the amount of calcium component derived from the label L can be grasped based on the amount of the label L contained in the pulverized mixture and the content (content ratio) of the calcium component contained in the label L. Therefore, when the pulverized mixture is used as a part or all of the glass raw material in the heating and melting section 30, it is preferable to derive the calcium component obtained by reusing the label L and add at least one of silica sand, soda ash, and lime as a glass raw material according to the amount, thereby adjusting the composition ratio of the glass raw material for forming a new glass product G.

[0031] The melt obtained in the heating and melting section 30 as described above is taken out and subjected to a process of shaping and slow cooling (shaping process) in the shaping section 40 to obtain a glass product G in the form of, for example, a glass bottle. In this manner, according to the method for recycling labeled glass products and the recycling system 10 of the present embodiment, it is possible to reuse a used labeled glass product X as a new glass product G.

[0032] In the present embodiment, an example is shown in which the labeled glass product X collected at a facility such as a resource recovery center where waste other than the labeled glass product X is also collected is reused to obtain the glass product G, but the present invention is not limited thereto. For example, a recovery section 50 for collecting the labeled glass product X may be incorporated into the recycling system 10, and the labeled glass product X collected at the recovery section 50 may be reused in the same manner as exemplified in the above embodiment. This reduces the possibility of contamination with, for example, glass products G with resin or paper labels other than the label L, or other foreign matter, and makes it possible to reuse the labeled glass product X more smoothly. In addition, by providing the recovery section 50 for collecting the labeled glass product X, it becomes easier to manage a series of steps from manufacturing, collecting, and recycling the labeled glass product X (glass product G), and it becomes easier to secure the used labeled glass product X (glass product G) as a raw material for manufacturing a new labeled glass product X (glass product G).

[0033] [Second embodiment] Next, a method for recycling labeled glass products according to a second embodiment and a recycling system 100 for implementing the method will be described with reference to Fig. 2. In the recycling method and recycling system 100 according to the second embodiment, parts common to those in the first embodiment described above are denoted by the same reference numerals, and descriptions thereof may be omitted.

[0034] <About Reuse System 100> 2, the recycling system 100 is a system for realizing the method for recycling a labeled glass product X according to the second embodiment. Like the above-mentioned recycling system 10, the recycling system 100 includes a crushing section 20, a heating and melting section 30, and a molding section 40. In addition to these, the recycling system 100 includes a quality inspection section 110, a separation section 120, and a cleaning section 130.

[0035] The quality inspection unit 110 inspects the quality of the collected labeled glass products X. The quality inspection unit 110 inspects whether the glass products G that make up the labeled glass products X can be reused by cleaning. The quality inspection unit 110 inspects the collected labeled glass products X (glass products G) according to inspection items such as the presence or absence of scratches and cracks. The separation unit 120 is a part that separates the label L from the glass products G that make up the collected labeled glass products X. The cleaning unit 130 is for cleaning the glass products G that make up the labeled glass products X. The cleaning unit 130 is equipped with, for example, a bottle washing machine or the like.

[0036] <How to reuse glass products with labels> Next, the method for recycling labeled glass products of this embodiment will be described. The method for recycling this embodiment, like the above embodiment, includes a recovery step for recovering labeled glass products X, a crushing step for crushing labeled glass products X to form a crushed mixture, a heating and melting step for heating and melting glass raw materials including the crushed mixture to form a melt, and a molding step for molding the melt. In addition to these steps, the method for recycling this embodiment includes a quality inspection step, a separation step, and a cleaning step.

[0037] The quality inspection process is a process for inspecting the quality of the labeled glass product X recovered in the recovery process. The quality inspection process is performed at a stage after the recovery process and before the crushing process. In the quality inspection process, the quality inspection of the recovered labeled glass product X is performed in the quality inspection department 110. As a result, the glass product G that makes up the labeled glass product X is sorted into those that can be reused (reused) by washing and those that are not suitable for reuse due to having scratches or cracks, etc.

[0038] The separation process and the cleaning process are processes performed to reuse the glass product G for which the inspection result of being reusable (reused) by washing is obtained in the above-described quality inspection process. The separation process is a process of removing the label L from the labeled glass product X determined to be reusable by washing in the above-described quality inspection process and separating it into the glass product G and the label L. Further, the cleaning process is a process of cleaning the labeled glass product X determined to be reusable by washing in the above-described quality inspection process. The separation process and the cleaning process may be performed in either order, but in the illustrated example, the cleaning process is performed after the separation process.

[0039] Also, in the present embodiment, among the labeled glass products X recovered in the recovery process, those determined not to be suitable for reuse (reuse) by washing in the quality inspection process are crushed in the crushing process and used as raw materials for reuse (recycling) to make a new glass product G. Therefore, the reuse method of the present embodiment is different in that, unlike the reuse method exemplified in the first embodiment, not all of the recovered labeled glass products X are reused (recycled) to make the glass product G, but rather reused (reused) by washing as much as possible. In the present embodiment, for those determined not to be suitable for reuse (reuse) by washing in the quality inspection process, in the same manner as exemplified in the first embodiment, they are used to make a new glass product G through a crushing process, a heat melting process, and a molding process.

[0040] When the method for recycling labeled glass products is carried out according to the flow illustrated in this embodiment, the recovery step, quality inspection step, separation step, and cleaning step may be performed by a food and beverage manufacturer or the like that uses glass products G such as glass bottles to pack beverages, foods, and the like to manufacture the products, but it is preferable to have at least one of these steps performed by the manufacturer of the glass products G. This makes it easier to manage the entire flow from the production, recovery, and recycling of the labeled glass products X (glass products G), and makes it easier to secure used labeled glass products X (glass products G) as raw materials for manufacturing new labeled glass products X (glass products G).

[0041] Furthermore, the method for recycling labeled glass products exemplified in this embodiment may further include a step of recycling the labels L removed from the used labeled glass products X in the separation step (label recycling step). To realize such a recycling method, the recycling system 100 may further include a label recycling section 140 for carrying out the label recycling step. This allows the used labels L obtained in the separation step to be used as raw materials, etc., when recycling the glass products G.

[0042] According to the method for recycling labeled glass products and the recycling system 10, 100 exemplified in the first and second embodiments described above, for example, the following advantages (1) to (6) can be obtained.

[0043] (1) In the method for recycling labeled glass products X exemplified in the first and second embodiments, the labeled glass products X in which the label L is a molded product formed by blending inorganic powder containing a calcium component are treated as the object. In addition, in the method for recycling labeled glass products X in the above embodiment, in the crushing step, a crushed mixture containing crushed glass and label L is formed from the labeled glass products X recovered in the recovery step. Therefore, in the method for recycling labeled glass products X in the above embodiment, the label L is crushed in the same manner as glass, and the crushed glass and label L are mixed into a crushed mixture. Furthermore, in the above embodiment, the glass raw material containing the crushed mixture is heated and melted in the heating and melting step to form a melt, and then the melt is molded in the molding step to form a glass product G. In this way, in the method for recycling labeled glass products X in the above embodiment, not only the glass product G constituting the labeled glass product X but also the label L can be recycled. Therefore, according to the above embodiment, a method for recycling labeled glass products X with a lower environmental load than the glass recycling method performed in the conventional technology can be provided.

[0044] (2) The method for recycling the labeled glass product X described above is characterized in that, in the heating and melting step, at least one of silica sand, soda ash, and lime is added as a glass raw material according to the amount of calcium components derived from the label L contained in the crushed mixture. This allows the amounts of silica sand, soda ash, and lime to be adjusted according to the amount of calcium components derived from the label L contained in the crushed mixture, and glass raw materials having an optimal composition ratio for manufacturing the glass product G can be prepared. As a result, it becomes possible to manufacture the glass product G in which the composition for constituting the glass is mixed in an optimal mixing ratio while recycling the labeled glass product X.

[0045] (3) The above-mentioned method for recycling labeled glass products X is characterized in that, in the crushing step, the labeled glass products X are crushed while the label L is still attached to the glass products G. This eliminates the need to remove the label L from the glass products G in the crushing step, and accordingly reduces the man-hours and costs required for recycling labeled glass products X, compared to a method in which the glass products G and the label L are crushed separately in the crushing step and then the crushed products of both are mixed to form a crushed mixture.

[0046] In the method for recycling labeled glass products X according to the above embodiment, the label L can be removed from the glass product G in the crushing step, and the label L and the glass product G can be crushed separately, and then the two can be mixed to obtain a crushed mixture. This makes it easier to optimize the mixture ratio of the crushed label L and the crushed glass product G.

[0047] (4) The method for recycling labeled glass products X according to the second embodiment further includes a quality inspection step for inspecting the quality of the labeled glass products X collected in the collection step, and a cleaning step for cleaning the labeled glass products X determined in the quality inspection step to be able to be restored to a reusable quality by cleaning, and is characterized in that the labeled glass products X determined in the quality inspection step to be unable to be restored to a reusable quality by cleaning are crushed in the crushing step. According to this recycling method, the labeled glass products X determined to be able to be restored to a reusable quality by cleaning can be reused by cleaning in the cleaning step. Also, according to this recycling method, the labeled glass products X determined to be unable to be restored to a reusable quality by cleaning can be crushed in the crushing step and reused. Therefore, according to the method for recycling labeled glass products X according to the second embodiment, the labeled glass products X can be reused in an appropriate manner depending on whether the collected labeled glass products X are in a state where they can be restored to a reusable quality by cleaning.

[0048] (5) As described above, the method for recycling labeled glass products X according to the second embodiment may further include a separation step of removing the label L from the labeled glass product X determined in the quality inspection step to be able to be restored to reusable quality by washing, and separating the label L from the glass product G, and a label L recycling step of recycling the label L removed in the separation step, and the glass product G from which the label L has been removed in the separation step is washed in the washing step. According to this recycling method, the label L removed in the separation step for the labeled glass product X determined in the quality inspection step to be able to be restored to reusable quality by washing can be recycled in the label L recycling step. In addition, the glass product G from which the label L has been removed in the separation step can be reused by washing it in the washing step. Therefore, according to the above-mentioned method, in addition to the glass product G that can be reused by washing, the removed label L can also be utilized as a resource.

[0049] (6) The recycling system 10,100 of the above embodiment is for recycling a labeled glass product X in which a label L is affixed to a glass product G, and the label L is a molded product formed by mixing inorganic powder containing a calcium component, a thermoplastic resin, and an auxiliary agent at a predetermined mixing ratio, and is characterized by including a crushing section that performs a crushing process for crushing the glass product G and the label L constituting the collected labeled glass product X to form a crushed mixture containing the crushed glass and the label L, a heating and melting section that performs a heating and melting process to heat and melt the glass raw material containing the crushed mixture, and a molding section that performs a molding process to mold the melt. Since the recycling system 10,100 is configured as described above, not only the glass product G constituting the labeled glass product X but also the label L can be recycled. Therefore, according to the recycling system 10,100 of the above embodiment, a method for recycling labeled glass products X with a lower environmental load can be realized compared to the glass recycling method performed in the prior art. [Industrial Applicability]

[0050] INDUSTRIAL APPLICABILITY The present invention can be suitably used for recycling or reusing glass products in general, such as glass bottles. [Explanation of symbols]

[0051] 10: Recycling system 20: Crushing section 30: Heat melting section 40: Molding section 50: Collection Department 100: Recycling system 110: Quality Inspection Department 120: Separation section 130: Cleaning section 140: Label Recycling Department G: Glass products L: Label P:Product X: Labeled glassware

Claims

1. A method for recycling labeled glass products, comprising: The label is made of a molded product obtained by mixing inorganic powder containing a calcium component, a thermoplastic resin, and an auxiliary agent at a predetermined mixing ratio, a recovery step of recovering the labeled glass products; a crushing step of forming a crushed mixture containing crushed glass and the label from the labeled glass products recovered in the recovery step; A heating and melting step of heating and melting the glass raw material containing the pulverized mixture to obtain a melt; A forming step of forming the melt; A glass product is formed through a process including the steps of: A method for recycling labeled glass products, comprising the steps of: in the heating and melting step, adding at least one of silica sand, soda ash, and lime as the glass raw material depending on the amount of calcium component derived from the label contained in the crushed mixture.

2. 2. The method for recycling labeled glass products according to claim 1, wherein in the crushing step, the labeled glass products are crushed while the labels are still attached to the glass products.

3. a quality inspection step of inspecting the quality of the labeled glass products collected in the collection step; a cleaning step of cleaning the labeled glass products determined in the quality inspection step to be capable of being restored to a reusable quality by cleaning; Further comprising:

3. The method for recycling labeled glass products as described in claim 1 or 2, characterized in that the labeled glass products that are determined in the quality inspection process to be unable to be restored to a reusable quality by cleaning are crushed in the crushing process.

4. a separation step of removing the label from the labeled glass product determined in the quality inspection step to be capable of being restored to a reusable quality by cleaning, and separating the label from the glass product; a label recycling step of recycling the label removed in the separation step; Further comprising:

4. The method for recycling labeled glass products according to claim 3, wherein the glass products from which the labels have been removed in the separating step are washed in the washing step.

5. A recycling system for recycling labeled glass products in which a label is affixed to a glass product, comprising: The label is made of a molded product obtained by mixing inorganic powder containing a calcium component, a thermoplastic resin, and an auxiliary agent at a predetermined mixing ratio, a crushing unit that crushes the glass products and the labels that constitute the collected labeled glass products to form a crushed mixture containing crushed glass and the labels; A heating and melting section which performs a heating and melting process to heat and melt the glass raw material containing the pulverized mixture into a melt; A molding section that performs a molding process to mold the melt; Equipped with This recycling system is characterized in that in the heating and melting section, heating and melting processing can be performed by adding at least one of silica sand, soda ash, and lime as the glass raw material depending on the amount of calcium component derived from the label contained in the crushed mixture.

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