JP2021043817A - Resource utilization support method and resource utilization system supporting resource utilization of packaging bag - Google Patents

Abstract

To provide a resource utilization support method and resource utilization support system that can effectively perform smooth resource utilization regarding a packaging material used for mail order such as net shopping.SOLUTION: A resource utilization support method of the present invention includes: an easy-to-erase information granting step of granting easy-to-erase information that enables easy erasing, including delivery information for delivery to a user, on a packaging bag 3; a hard-to-erase information granting step of granting hard-to-erase information that is harder to erase than the easy-to-erase information, including recycle information serving as an indicator for determining reuse or recycle of the packaging bag, on the packaging bag 3; and a resource utilization selection step of selecting whether the packaging bag 3 collected in a state where the delivery information has been erased is to be provided for reuse or recycle based on the recycle information.SELECTED DRAWING: Figure 4

Description

The present invention relates to a resource utilization support method and a resource utilization system that support resource utilization of packaging bags.

Corrugated cardboard is used as a packing material for packing products. However, corrugated cardboard is difficult to reuse if it becomes dirty or damaged, and since it is a bulky material, it is difficult to secure a storage space, and there is a problem in smoothly saving resources of the corrugated cardboard. To solve such a problem, it is conceivable to use the packaging container described in Patent Document 1 as a packaging material as an alternative to corrugated cardboard. The packaging container includes a container body made of a bubble sheet having a film having a convex portion and a flat film, and an opening capable of sealing the inside of the container body. Such a packaging container has a cushioning property and can be sealed in a state where the inside of the container is depressurized or pressurized. Further, Patent Document 2 discloses a delivery product storage bag in which a thread and a hook-and-loop fastener are made of the same polyolefin material as the material of the non-woven fabric sheet, the non-woven fabric sheet is made into a bag shape using the thread, and the surface fastener is attached thereto. Has been done.

Japanese Unexamined Patent Publication No. 2005-255229 Japanese Unexamined Patent Publication No. 2011-168293

By the way, an EC site supplier who sells a product through an EC site on the Internet purchases the product from the manufacturer of the product, sorts the product for each user who is the purchaser of the product, and then entrusts the product to a delivery company. Is generally delivered to the user. In the distribution channel of this product, separate packaging materials and cushioning materials such as foam materials are used both when transporting the product from the manufacturer to the EC site supplier and when transporting the product from the EC site supplier to the user. Is used. These packing materials and cushioning materials are often discarded once they are used. From the viewpoint of reducing the environmental load, resource utilization such as reuse and recycling of packaging materials is socially desired, but the technologies described in Patent Documents 1 and 2 consider the distribution channel of mail order through EC sites and the like. Therefore, it does not disclose the technology that facilitates the resource utilization of packaging materials.

An object of the present invention is to provide a resource utilization method and a resource utilization system capable of eliminating the above-mentioned drawbacks of the prior art.

The present invention is a resource utilization support method for supporting resource utilization in which a packaging body in which a product is contained in a packaging bag is delivered to a user, and then the packaging bag is collected and the packaging bag is reused or recycled. ,
An easy erasure information giving step that can be easily erased and gives easy erasure information including delivery information for delivery to the user to the packaging bag.
A difficult-to-erase information giving step of giving difficult-to-erase information including recycling information, which is harder to erase than the easy-to-erase information and is an index for determining reuse or recycling of the packaging bag,
Provided is a resource utilization support method including a resource utilization selection step of selecting whether to reuse or recycle the packaging bag collected in a state where the delivery information has been erased, based on the recycling information. It is a thing.

Further, the present invention is a resource utilization support method for supporting resource utilization in which a packaging body in which a product is contained in a packaging bag is delivered to a user, and then the packaging bag is collected and the packaging bag is reused or recycled. There,
An easy erasure information giving step that can be easily erased and gives easy erasure information including delivery information for delivery to the user to the packaging bag.
A difficult-to-erase information imparting step of imparting difficult-to-erase information to the packaging bag, which is more difficult to erase than the easy-to-erase information and includes recycling information as an index for determining reuse or recycling of the packaging bag.
It includes a resource utilization selection step of selecting whether to reuse or recycle the packaging bag collected in a state where the delivery information has been erased, based on the recycling information.
The easy erasure information provides a resource utilization support method displayed by ink that can be erased from the packaging bag by heating to a predetermined temperature or higher.

Further, the present invention is a support system that supports the utilization of resources for reusing or recycling the packaging bag by collecting the packaging bag after delivering the packaging body in which the product is contained in the packaging bag to the user.
The packaging bag is easily erasable, and includes easy erasing information including delivery information for delivery to the user, and is more difficult to erase than the easy erasing information, and is an index for determining reuse or recycling of the packaging bag. Difficult to erase information including recycling information is given.
The recycling information includes information indicating the number of times the packaging bag is reused.
An information input unit for inputting the delivery information and the number of reuses, and
A resource utilization support system including an information output unit that updates one or both of the delivery information and the number of reuses and outputs the given information for giving the updated information to the reused packaging bag. Is to provide.

According to the present invention, it is possible to effectively facilitate the utilization of resources for packing materials used for mail order such as online shopping.

FIG. 1 is a perspective view showing an embodiment of a package according to the present invention. FIG. 2 is a plan view of the package shown in FIG. FIG. 3 is a sectional view taken along line II-II of FIG. FIG. 4 is an explanatory diagram showing an embodiment of the resource utilization support method of the present invention. FIG. 5 is a block diagram showing an embodiment of the resource utilization support system of the present invention. FIG. 6 is a flow chart of resource utilization support processing executed by the system shown in FIG. FIG. 7 is a flow chart of the resource utilization selection process shown in FIG. FIG. 8 is a flow chart of collection information processing executed by the recycling information generation unit shown in FIG. 7.

Hereinafter, the resource utilization support method of the present invention will be described based on a preferred embodiment thereof with reference to the drawings. In the present specification, the "resource utilization support method" is a method of collecting a packaging bag used for packing a product and supporting resource utilization for reusing or recycling the packaging bag. “Reuse” means that the used packaging bag 3 is reused as a packaging material without being processed as it is. Further, "recycling" means that the packaging bag 3 is manufactured by using the crushed pieces obtained by crushing the used packaging bag 3 and the crushed pieces obtained by melting the crushed pieces into pellets. ..

In the resource utilization support method of the present embodiment, a packaging bag is used as a packaging material for containing (packing) the product. FIGS. 1 to 3 show an embodiment of a packing body in which products are packed by a packaging bag. As shown in FIGS. 1 and 2, the packing body 1 of the present embodiment is a packing body of products in which a plurality of products 2 are contained in a packaging bag 3, and the product 2 and the packaging bag 3 are constituent elements. Includes.

The product 2 contained in the packaging bag 3 is not particularly limited, and for example, dishwashing detergent, laundry detergent, fabric softener, processed food, paper diaper, sanitary goods, hair care products such as shampoo, cosmetics, processed food, beverage, etc. Products include seasonings, confectionery, toys, books, CDs and DVDs on which music or images are recorded, tools, car supplies, electronic information terminals such as smartphones, electronic parts, and electrical appliances. As shown in FIG. 1, the package 1 of the present embodiment includes a standing pouch in which a liquid is contained as a product 2. Such products are products such as shampoos and detergents that are usually sold in a container, and the product including the container. Further, the number of products housed in the packaging bag 3 may be a single number or a plurality of two or more products.

As shown in FIGS. 1 and 2, the packaging bag 3 is provided with easy erasure information 5 and difficult erasure information 4. The easy erasure information 5 is information displayed so that it can be easily erased. "Simple erasable" means that the package 1 can be erased under simple conditions, although it is not erased due to the environment during transportation or storage, or due to possible contact during transportation or storage. The difficult-to-erase information 4 is information that is more difficult to erase than the easy-to-erase information 5. Difficult to erase information 4 is also displayed so that it can be erased. The difficult-to-erase information 4 and the easy-to-erase information 5 differ in the parameters (heating temperature, etc.) related to the erasure of the information, or the type and number of work processes related to the erasure of the information. The form of giving the easy erasure information 5 and the difficult erasure information 4 will be described in detail later.

The easy erasure information 5 includes delivery information for delivery to a user who is a purchaser of a product. The easy erasure information 5 may include information other than the delivery information such as the product name and the scheduled delivery date and time of the product. From the viewpoint of simple erasure, the easy erasure information 5 preferably includes personal information and privacy-related information.
The difficult-to-erase information 4 includes recycling information that serves as an index for determining reuse or recycling of the packaging bag 3. “Including recycling information” includes a form in which the difficult-to-erase information 4 includes the recycling information itself and a form in which the difficult-to-erase information 4 includes information associated with the recycling information. Examples of the recycling information include the number of times the packaging bag 3 is reused, the deterioration information of the packaging bag 3, the material of the packaging bag, the optical characteristics of the packaging bag, and the like. Examples of the optical characteristics include the transmittance of the packaging bag with respect to visible light, the haze value, and the like. Examples of the information associated with the recycling information include identification information such as an identifier that identifies the packaging bag 3 and a serial number of the packaging bag 3. The difficult-to-erase information 4 may include information other than recycling information, such as the manufacturing date, manufacturing lot, manufacturing place, manufacturing factory, and packaging specifications of the packaging bag.

The packaging bag 3 of the present embodiment has a seal portion 15 in which four sides of the laminated body of the two sheet materials are sealed in a plan view, and an internal space 3a in a region surrounded by the seal portion 15. As shown in FIG. 3, the packaging bag 3 is configured to accommodate the product 2 in the internal space 3a.
The packaging bag 3 of the present embodiment does not have a handle structure that can be gripped by a human hand, but may have the handle structure.

FIG. 4 shows an explanatory diagram for explaining a resource utilization support method according to an embodiment of the present invention. The resource utilization support method of the present embodiment supports the resource utilization of the packaging bag 3 with respect to a series of routes for reusing or recycling the packaging bag 3 used as the packaging material. The series of routes includes a distribution route for delivering the packaging body 1 in which the product 2 is contained in the packaging bag 3 to the user D by mail order such as online shopping, and a distribution route for collecting the packaging bag 3 and collecting the packaging bag 3. It consists of a resource utilization route for reuse or recycling. In the distribution route, as shown in FIG. 4, the product manufacturer A packs the manufactured product in the packaging bag 3 to manufacture the packing body 1. Next, the EC site supplier B adds the delivery information of the user D to the packaging bag 3 of the packing body 1 manufactured by the manufacturer A. Then, the delivery company C is entrusted by the EC site company B to deliver the package 1 to the user D. In this way, the packaging bag 3 passes through the product manufacturer A, the EC site manufacturer B, and the delivery company C in the distribution route to the user D who is the purchaser of the product. In the resource utilization route, as shown in FIG. 4, the user D takes out the product 2 from the packing body 1 and hands the packaging bag 3 to the collecting company E. Next, the collection company E collects the packaging bag 3 and transports it to the sorting company F. Next, the sorting company F sorts the collected packaging bag 3 into either one for reuse or one for recycling. Then, the manufacturer A uses the packaging bag 3 sorted for reuse as a packaging material for the product 2 again. Further, the manufacturer A uses a packaging bag newly manufactured from the packaging bag 3 sorted for recycling as a packaging material for the product. In this way, the packaging bag 3 collected from the user returns to the product manufacturer A via the user D, the collection company E, and the sorting company F in the resource utilization route.

The resource utilization support method of the present embodiment includes a difficult-to-erase information giving step, an easy-to-erase information giving step, and a resource utilization selection step, and each step is executed in this order. The easy erasure information giving step may be executed before the difficult erasure information giving step.

In the present embodiment, the manufacturer A of the product executes the difficult-to-erase information giving step. The difficult-to-erase information giving step is a step of giving the difficult-to-erase information 4 to the packaging bag 3. As shown in FIG. 4, the manufacturer A manufactures the packing body 1 by packing the product 2 in the packaging bag 3 to which the difficult-to-erase information 4 is given. The difficult-to-erase information 4 may be given to the packaging bag 3 after the product 2 is packed in the packaging bag 3.
A barcode is displayed as an identifier on the packaging bag 3 of the present embodiment. This barcode is the difficult-to-erase information 4 of this embodiment. The identifier given to the packaging bag 3 is a character string or a number for identifying each packaging bag 3. In this embodiment, the resource utilization method is implemented using the resource utilization system described later. In the system, the identifier and the recycling information of the packaging bag 3 corresponding to the identifier are associated and stored in a database. In the system, the recycling information of the packaging bag 3 corresponding to the identifier can be accessed by reading the identifier (difficult to erase information 4) given to the packaging bag 3 with a predetermined reader. The identifier of the difficult-to-erase information 4 may be in a form other than a barcode, and may be, for example, an RFID (Radio Frequency Identification) tag or the like. RFID tags can be read by RFID readers (RFID antennas).

In this embodiment, the EC site supplier B executes the easy erasure information giving step. The easy erasure information giving step is a step of giving the easy erasure information 5 to the packaging bag 3. The EC site supplier B adds the delivery information of the user D to the packaging bag 3 of the packaging body 1 delivered from the manufacturer A of the product. This delivery information is the easy erasure information 5 of the present embodiment. The delivery information given to the packaging bag 3 is a notation of the address and address of the delivery destination. The EC site company B entrusts the delivery company C with the packing body 1 to which the easy-to-delete information 5 is attached to the packaging bag 3 and delivers it to the user D.

The user D receives the product purchased through the EC site of the EC site company B from the delivery company C. Difficult-to-erase information 4 and easy-to-erase information 5 are displayed on the packaging bag 3 of the packing body 1 delivered to the user D. After taking out the product 2 from the packaging bag 3, the user D erases the easy erasing information 5 displayed on the packaging bag 3. The easy erasure information 5 is erased by a method according to the form of giving the easy erasure information 5. For example, as will be described later, when the easy erasure information 5 is displayed with ink that can be removed by a predetermined heating temperature, the easy erasure information 5 is erased by washing the neutral water heated to the predetermined heating temperature. To. As described above, since the delivery information is the easy deletion information 5, the user D deletes the delivery information displayed on the packaging bag 3. Then, the user D hands the packaging bag 3 from which the delivery information has been erased to the collection company E. The user D may take out the packaging bag 3 from which the delivery information has been erased to a predetermined collection place, or may give it to the collection company E who has visited the user D.

The collection company E collects the packaging bag 3 whose delivery information has been erased, and transports the packaging bag 3 to the sorting company F. The collection may be performed by the delivery company C, which also serves as the collection company E, and the delivery company C may collect the packaging bag 3 at a predetermined collection location or under the user D.

In this embodiment, the sorting company F executes the resource utilization selection step. The resource utilization selection step is a step of selecting whether to reuse or recycle the packaging bag 3 collected in a state where the delivery information has been erased, based on the recycling information. In the resource utilization selection step, for example, when the recycling information is the number of reuses of the packaging bag 3, if the number of reuses is less than a predetermined upper limit number, the packaging bag 3 is selected to be reused. Further, when the number of reuses is equal to or more than a predetermined upper limit, the packaging bag 3 is selected to be recycled. A set value as an index of reuse or recycling, such as the upper limit number of times of reuse, can be appropriately set according to the strength and deterioration of the packaging bag. In addition, the set value can be changed depending on the type of product, the preference of the user, and the like. For example, the setting criteria can be lowered for users who choose not to require the packaging bag to look good. In addition, the reuse or recycling index may be a single element or a plurality of elements. The plurality of elements are appropriately selected from the information included as the recycling information. For example, as a plurality of elements, it may be selected whether to be reused or recycled based on the number of reuses and the deterioration information of the packaging bag 3.
In this embodiment, the sorting company F sorts the packaging bag 3 for reuse or recycling based on the selection result of whether to use it for reuse or recycling in the resource utilization process.

In the present embodiment, when the sorting company F reads the identifier displayed on the packaging bag 3 with a reader, the system described later reuses the packaging bag 3 based on the recycling information of the packaging bag 3 corresponding to the identifier. A judgment is made as to whether or not the product is to be recycled, and the judgment result is displayed on a display means such as a display as a selection result of the resource utilization selection process. The sorting company F performs the above-mentioned sorting based on the selection result displayed on the display means. The selection in the resource utilization selection process may be made artificially based on the recycling information instead of the system described later. For example, with respect to the recycled information accessed by reading the identifier, a human may determine whether or not the number of reuses is equal to or more than a predetermined upper limit, and execute the selection in the resource utilization selection process. In this case, in addition to the above determination based on the recycling information, the appearance of the packaging bag 3 may be visually inspected to determine whether or not the damage or dirt is within a predetermined range, and the selection in the resource utilization selection process may be executed. Good.

The packaging bag 3 sorted by the sorting company F is used for reuse or recycling. When the packaging bag 3 is to be reused, the packaging bag 3 is handed over to the manufacturer A of the product in a state where the difficult-to-erase information 4 is displayed. Manufacturer A packs the product using the packaging bag 3 sorted for reuse, and manufactures the packing body 1 again. When the packaging bag 3 is used for recycling, the packaging bag 3 is subjected to a recycling process such as crushing in a state where the difficult-to-erase information 4 is erased, and is processed into a sheet material such as a resin composition. The sheet material is used as a material for the packaging bag 3. Manufacturer A packs the product using the packaging bag 3 newly manufactured using the material, and manufactures the packing body 1 again.

In the resource utilization method of the present embodiment including the above-mentioned easy erasure information addition process, difficult erasure information addition process, and resource utilization selection process, resource utilization is effective for packing materials used for mail order such as online shopping. Can be smoothed. To elaborate on this reason, in the above-described embodiment, the personal information such as the delivery information is displayed as the easily erased information, so that the user D can easily erase the easily erased information. On the other hand, since the recycling information for appropriately utilizing resources is displayed as difficult-to-erase information, it is difficult for user D to erase it. In this way, since the information to be erased according to the aspect of the distribution channel of the product is divided into the easy erasure information and the difficult erasure information and given to the packaging bag 3, the personal information is erased from the user D. It is easy to collect the packaging bag 3, and the sorting company F can appropriately select reuse or recycling based on the recycling information.
Further, personal information such as delivery information is attached to the packaging bag 3 as easy erasure information, and since the easy erasure information can be easily erased by the user D, both protection of personal information and ease of recycling are achieved. be able to.

In the resource utilization method of the present embodiment, as shown in FIG. 4, the EC site supplier B purchases the product from the manufacturer A and the EC site supplier B delivers the product to the user D, both of which are the same. Since the packaging bag 3 is consistently used as the packaging material, it is not necessary to use a different packaging material for each delivery of the product between the vendors. As a result, the amount of packing material used can be effectively reduced.

From the viewpoint of further promoting resource utilization, the resource utilization support method is a point service in which collection points are given according to the number of used packaging bags 3 when the used packaging bags 3 are collected. It is preferable to provide to D. In the present embodiment, when the sorting company F reads the identifier displayed on the packaging bag 3 with a reader, the system described later adds the collection points held by the user who is the collection source. The collection points will be described in detail later.

The form of giving the easy erasure information 5 will be described in detail. For displaying the easy erasing information 5, that is, adding the easy erasing information 5, ink used for displaying information such as delivery information and a sticker member displaying the information can be used. It is preferable that the easy erasure information 5 is configured so that it can be easily erased from the packaging bag 3. For example, when the easy erasure information 5 is displayed using a seal member displaying delivery information or the like, it is preferable that the seal member is configured to be peelable from the state of being attached to the surface of the packaging bag 3. Examples of such a configuration include a base material coated with an adhesive such as an adhesive paper, an adhesive film, and a tag on the back surface, and a release layer arranged on the back surface of the base material. The sealing member is attached to the packaging bag 3 in a state where easy-to-erase information is printed on the surface of the base material with ink or the like and the surface on the release layer side faces the packaging bag 3. When the easy erasure information 5 is displayed using this sealing member, the easy erasure information 5 is removed from the packaging bag 3 by peeling the base material from the release layer. Similar to the easy erasure information 5, the difficult erasure information 4 may be displayed by using the seal member. In this case, the seal member used for displaying the difficult-to-erase information 4 has a higher adhesive strength between the base material and the peeling layer than the seal member used for displaying the easy-to-erase information 5. The adhesive strength can be adjusted by changing the adhesive or the adhesive area. As will be described later, when the packaging bag 3 is made of paper, it is preferable to display the easy erasure information 5 and the difficult erasure information 4 by using the seal member.

When ink is used to add the easy-to-erase information 5, it is preferable that the ink is configured to be removable from the state printed on the surface of the packaging bag 3. Such ink is removed by being directly or indirectly printed on the packaging bag 3 and then separated from the packaging bag 3. In addition, the ink may be unintentionally removed during transportation of the packaging body 1, such as transportation in rainy weather or contact with another packaging body, and the ink is configured to be able to suppress this. Is desirable. From such a viewpoint, it is preferable that the easy erasure information 5 is displayed by ink that can be removed from the packaging bag 3 by using neutral water or the like heated to a predetermined temperature or higher.

Examples of the ink that can be removed by heating to a predetermined temperature or higher include ink printed on a water-soluble printing primer layer made of a water-soluble resin for printing primers described below. In this case, the ink itself is a commonly used ink. The water-soluble printing primer layer dissolves when it comes into contact with neutral water having a temperature equal to or higher than a predetermined temperature, and the ink on the water-soluble printing primer layer is removed from the packaging bag 3 due to this. Neutral water will be described in detail later.

<Water-soluble resin for printing primer (component α)>
A water-soluble resin for a printing primer (hereinafter, also referred to as “component α”) that forms a water-soluble printing primer layer will be described based on a preferred embodiment thereof. The water-soluble resin for printing primers includes a monomer unit A having a hydrophilic group (hereinafter, also simply referred to as a hydrophilic group) other than the hydrophilic group constituting the polymerization related to the formation of the resin, and a monomer having no hydrophilic group. It has a unit B, and the ratio of the monomer unit A to the total of all the monomer units is 5 to 35 mol%. Hereinafter, the water-soluble printing primer layer is also simply referred to as a "primer layer", and the water-soluble resin for a printing primer is also simply referred to as a "water-soluble resin".

[Monomer unit A]
The monomer unit A has a hydrophilic group. Further, the monomer for inducing the monomer unit A is referred to as monomer A.

The monomer unit A is not particularly limited as long as it is a monomer unit having the hydrophilic group, but from the viewpoint of improving the solubility and water resistance of the water-soluble resin in neutral water, the dicarboxylic having the hydrophilic group. An acid monomer unit (hereinafter, also referred to as a hydrophilic dicarboxylic acid monomer unit A) is preferable.

The monomer A is a carboxylic acid or amine having a hydrophilic group from the viewpoint of improving the solubility and water resistance of the water-soluble resin in neutral water and the ease of polymerization reaction during the production of the water-soluble resin. , One or more selected from the group consisting of amino acids is preferable, and the carboxylic acid having a hydrophilic group is more preferable. Among the carboxylic acids, the aromatic carboxylic acid having a hydrophilic group is preferable from the same viewpoint, that is, a hydroxy group-containing aromatic dicarboxylic acid, a primary amino group-containing aromatic dicarboxylic acid, and a sulfonic acid group-containing aromatic dicarboxylic acid. , And one or more selected from the group consisting of sulfonic acid base-containing aromatic dicarboxylic acids are more preferable, and one or more selected from the group consisting of sulfonic acid base-containing aromatic dicarboxylic acids is more preferable. Among these, from the same viewpoint, one or more selected from the group consisting of sulfophthalic acid and sulfonaphthalenedicarboxylic acid is preferable, and one or more selected from the group consisting of sulfophthalic acid is more preferable, and from sulfoisophthalic acid and sulfoterephthalic acid. One or more selected from the above group is more preferable, and 5-sulfoisophthalic acid is further preferable.

The hydrophilic groups include a primary amino group and a secondary amino group from the viewpoint of improving the solubility of the water-soluble resin in neutral water and the ease of polymerization reaction during the production of the water-soluble resin. Selected from the group consisting of a group, a tertiary amino group, a quaternary ammonium base, an oxyalkylene group, a hydroxyl group, a carboxyl group, a carboxyl base, a phosphoric acid group, a phosphoric acid base, a sulfonic acid group, and a sulfonic acid base 1 More than seeds can be mentioned. Among these, from the viewpoint of improving the heat resistance of the water-soluble resin, one or more selected from the group consisting of a quaternary ammonium base, an oxyalkylene group, a carboxyl base, a phosphate base, and a sulfonic acid base is preferable. One or more selected from the group consisting of a quaternary ammonium base, an oxyalkylene group, and a sulfonic acid base is more preferable, and a sulfonic acid base is further preferable.

_{The sulfonic acid base is -SO 3} M ³ (however, M ³ is used from the viewpoint of improving the solubility of the water-soluble resin in neutral water and the ease of polymerization reaction during the production of the water-soluble resin. One or more selected from the group consisting of metal ions and ammonium ions is preferable from the viewpoint of showing the counter ion of the sulfonic acid group constituting the sulfonic acid base and improving the solubility of the water-soluble resin in neutral water. One or more selected from the group consisting of ions is more preferable, one or more selected from the group consisting of alkali metal ions and alkaline earth metal ions is further preferable, and one or more selected from the group consisting of alkali metal ions is further preferable. Preferably, one or more selected from the group consisting of sodium ion and potassium ion is more preferable, and sodium ion is more preferable.) The sulfonic acid base represented by) is preferable.

The content of the hydrophilic group in the water-soluble resin is preferably 0.5 mmol / g or more, more preferably 0.6 mmol / g or more, from the viewpoint of improving the solubility of the water-soluble resin in neutral water. It is preferably 0.7 mmol / g or more, more preferably 3.0 mmol / g or less, more preferably 2.0 mmol / g or less, and 1.5 mmol / g or less from the viewpoint of improving the water resistance of the water-soluble resin. Is more preferable. The content of the hydrophilic group in the water-soluble resin is preferably 0.5 to 3.0 mmol / g from the viewpoint of improving the solubility and water resistance of the water-soluble resin in neutral water. It is more preferably 0.6 to 2.0 mmol / g, and even more preferably 0.7 to 1.5 mmol / g.

The ratio of the monomer unit A to the total of all the monomer units of the water-soluble resin is 5 mol% or more, preferably 7 mol% or more, preferably 10 mol, from the viewpoint of improving the solubility of the water-soluble resin in neutral water. % Or more is more preferable, 12 mol% or more is further preferable, and from the viewpoint of improving the water resistance of the water-soluble resin, 35 mol% or less, 30 mol% or less is preferable, 20 mol% or less is more preferable, and 15 mol% or less is further preferable. It is preferable, and 13 mol% or less is more preferable. The ratio of the monomer unit A to the total of all the monomer units of the water-soluble resin is 5 to 35 mol% from the viewpoint of improving the solubility and water resistance of the water-soluble resin in neutral water. ~ 30 mol% is preferable, 10 to 20 mol% is more preferable, and 12 to 15 mol% is further preferable.

[Monomer unit B]
The monomer unit B does not have the hydrophilic group. The monomer unit B is not particularly limited as long as it is a monomer unit that does not have the hydrophilic group, but has the hydrophilic group from the viewpoint of improving the solubility and water resistance of the water-soluble resin in neutral water. A non-dicarboxylic acid monomer unit (hereinafter, also referred to as a hydrophobic dicarboxylic acid monomer unit B) is preferable.

The dicarboxylic acid for inducing the hydrophobic dicarboxylic acid monomer unit B has a viewpoint of improving the solubility and water resistance of the water-soluble resin in neutral water, and the ease of polymerization reaction during the production of the water-soluble resin. From the viewpoint, one or more selected from the group consisting of the aromatic dicarboxylic acid having no hydrophilic group and the aliphatic dicarboxylic acid having no hydrophilic group is more preferable. Among these, from the same viewpoint, the group consisting of terephthalic acid, isophthalic acid, 2,5-furandicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, and 1,3-adamantandicarboxylic acid. More preferably one or more selected from the group consisting of terephthalic acid, 2,5-furandicarboxylic acid, and 2,6-naphthalenedicarboxylic acid, further preferably one or more selected from the group consisting of terephthalic acid, 2,6-naphthalenedicarboxylic acid, More preferred.

The ratio of the amount of substance of the monomer unit B to the total amount of substance of all the monomer units in the water-soluble resin is preferably 15 mol% or more, preferably 25 mol% or more, from the viewpoint of improving the water resistance of the water-soluble resin. More preferably, 30 mol% or more is further preferable, and from the viewpoint of improving the solubility of the water-soluble resin in neutral water, 45 mol% or less is more preferable, 42 mol% or less is more preferable, and 40 mol% or less is further preferable. Further, the ratio of the amount of substance of the monomer unit B to the total amount of substance of all the monomer units in the water-soluble resin is determined from the viewpoint of improving the solubility and water resistance of the water-soluble resin in neutral water. It is preferably 15 to 45 mol%, more preferably 25 to 42 mol%, still more preferably 30 to 40 mol%.

The mol ratio of the monomer unit A to the monomer unit B in the water-soluble resin (the monomer unit A / the monomer unit B) is a viewpoint of improving the solubility and water resistance of the water-soluble resin in neutral water. Therefore, 10/90 or more is preferable, 15/85 or more is more preferable, 18/82 or more is further preferable, 20/80 or more is further preferable, 70/30 or less is preferable, and 65/35 or less is more preferable from the same viewpoint. Preferably, 60/40 or less is further preferable, 40/60 or less is further preferable, and 30/70 or less is further preferable.

From the viewpoint of the strength of the primer layer, the weight average molecular weight of the water-soluble resin is preferably 1000 or more, more preferably 5000 or more, further preferably 10000 or more, further preferably 15000 or more, and to neutral water of the water-soluble resin. From the viewpoint of improving the solubility of the resin, 80,000 or less is preferable, 50,000 or less is more preferable, 30,000 or less is further preferable, and 20,000 or less is further preferable. In this specification, the weight average molecular weight is measured by the method described in Examples.

Examples of the water-soluble resin include water-soluble polyester resin, water-soluble polyamide resin, water-soluble polyimide resin, water-soluble acrylic resin, water-soluble polyurethane resin, water-soluble polyallylamine resin, water-soluble phenol resin, and water-soluble epoxy resin. Examples thereof include water-soluble phenoxy resins, water-soluble urea resins, water-soluble melamine resins, and polyvinyl alcohol resins, and modified products of these resins. These can be used alone or in combination of two or more. Among these, from the viewpoint of solubility in neutral water, one or more selected from the group consisting of a water-soluble polyester resin, a water-soluble polyamide resin, and a water-soluble acrylic resin is preferable, and a water-soluble polyester resin is more preferable.

(Diol Monomer Unit C)
When the water-soluble resin is a water-soluble polyester resin, it has a diol monomer unit C other than the monomer unit A and the monomer unit B. The diol for inducing the diol monomer unit C is also referred to as diol C.

As the diol C, an aliphatic diol, an aromatic diol and the like can be used, but the aliphatic diol is preferable from the viewpoint of the production cost of the water-soluble polyester resin.

The carbon number of the diol C is preferably 2 or more from the viewpoint of improving the solubility and water resistance of the water-soluble polyester resin in neutral water, preferably 31 or less, and more preferably 25 or less from the same viewpoint. , 20 or less is more preferable, and 15 or less is further preferable.

Examples of the aliphatic diol include one or more selected from the group consisting of chain diols and cyclic diols, from the viewpoint of improving the solubility and water resistance of the water-soluble polyester resin in neutral water. , Chain diols are preferred.

The carbon number of the chain diol is preferably 2 or more from the viewpoint of improving the solubility and water resistance of the water-soluble polyester resin in neutral water, preferably 6 or less, and more preferably 4 or less from the same viewpoint. Preferably, 3 or less is more preferable, and 2 is further preferable.

The diol C may have ether oxygen, but when the diol C is a chain aliphatic diol, the viewpoint of improving the solubility and water resistance of the water-soluble polyester resin in neutral water. Therefore, the number of ether oxygen is preferably 1 or less, and when the diol C is a cyclic aliphatic diol, the number of ether oxygen is preferably 2 or less from the same viewpoint.

The chain diol is composed of ethylene glycol, 1,2-propanediol, 1,3-propanediol, diethylene glycol, and dipropylene glycol from the viewpoint of improving the solubility and water resistance of the water-soluble resin in neutral water. One or more selected from the group consisting of ethylene glycol, 1,2-propanediol, and 1,3-propanediol are more preferable, and ethylene glycol is further preferable.

When the diol C contains one or more selected from the group consisting of ethylene glycol, 1,2-propanediol, 1,3-propanediol, diethylene glycol, and dipropylene glycol, all the diols in the water-soluble polyester resin. The ratio of the total of ethylene glycol, 1,2-propanediol, 1,3-propanediol, diethylene glycol, and dipropylene glycol to the total of the monomer units is the solubility and water resistance of the water-soluble resin in neutral water. From the viewpoint of improving the above, 10 mol% or more is preferable, 50 mol% or more is more preferable, 80 mol% or more is further preferable, 90 mol% or more is further preferable, 95 mol% or more is further preferable, 98 mol% or more is further preferable, and substantially. 100 mol% is more preferable, and 100 mol% is further preferable. In addition, substantially 100 mol% means a case where a substance other than ethylene glycol, 1,2-propanediol, 1,3-propanediol, diethylene glycol, and dipropylene glycol is unavoidably mixed.

(Water-soluble polyester resin)
The water-soluble polyester resin is the hydrophilic dicarboxylic acid monomer with respect to the total of all dicarboxylic acid monomer units in the water-soluble polyester resin from the viewpoint of improving the solubility and water resistance of the water-soluble resin in neutral water. The proportion of the unit A and the proportion of the hydrophobic dicarboxylic acid monomer unit B are 10 to 70 mol% and 30 to 90 mol%, respectively, and the hydrophilic group for inducing the hydrophobic dicarboxylic acid monomer unit B is used. A water-soluble polyester resin in which the dicarboxylic acid that does not exist is 2,6-naphthalenedicarboxylic acid is preferable.

The water-soluble polyester resin can be exemplified by the following general formula (1).

（前記化学式（１）中、ｐ１はエチレン２，６−ナフタレンジカルボキシレートの重合度、ｑ１はエチレン５−スルホイソフタレートの重合度の数を表す。ただし、エチレン２，６−ナフタレンジカルボキシレートとエチレン５−スルホイソフタレートはブロック結合又はランダム結合であり、前記水溶性樹脂組成物の中性水への溶解性を向上させる観点からランダム結合がより好ましい。）

(In the chemical formula (1), p1 represents the degree of polymerization of ethylene 2,6-naphthalenedicarboxylate, and q1 represents the number of degrees of polymerization of ethylene 5-sulfoisophthalate. However, ethylene 2,6-naphthalenedi carboxylate. And ethylene 5-sulfoisophthalate are block bonds or random bonds, and random bonds are more preferable from the viewpoint of improving the solubility of the water-soluble resin composition in neutral water.)

The water-soluble polyester resin is a monomer unit other than the hydrophilic dicarboxylic acid monomer unit A, the hydrophobic dicarboxylic acid monomer unit B, and the diol monomer unit C as long as the effect of solubility in neutral water is not impaired. May have.

The method for producing the water-soluble polyester resin is not particularly limited, and a conventionally known method for producing a polyester resin can be applied.

<Water-soluble resin composition for printing primers>
The water-soluble resin for a printing primer may be a water-soluble resin composition for a printing primer containing another component together with the component α.

The content of the water-soluble resin in the water-soluble resin composition for printing primers is preferably 30% by mass or more, preferably 50% by mass or more, from the viewpoint of improving the solubility and water resistance of the water-soluble resin in neutral water. Is more preferable, 70% by mass or more is more preferable, 90% by mass or more is further preferable, 100% by mass or less is more preferable, 98% by mass or less is more preferable, and 96% by mass or less is further preferable.

(Salts other than the water-soluble resin (component β))
The water-soluble resin composition may contain a salt other than the water-soluble resin (hereinafter, also referred to as “component β”). As the component β, an organic salt compound represented by the following general formula (2) is preferable from the viewpoint of improving the solubility, water resistance and heat resistance of the water-soluble resin composition in neutral water.
(R ¹ −SO ₃ −) _n X ^{n +} (2)
(In the general formula (2), R ¹ represents a hydrocarbon group having 1 to 30 carbon atoms which may have a substituent, n represents a number of 1 or 2, and when n is 1, X ^{n +} indicates sodium ion, potassium ion, lithium ion, ammonium ion, or phosphonium ion, and when n is 2, X ^{n +} indicates magnesium ion, calcium ion, barium ion, or zinc ion.)

In the general formula (2), R ¹ includes a substituent which may have a substituent from the viewpoint of improving the solubility and heat resistance of the water-soluble resin composition in neutral water. It shows a hydrocarbon group having 1 to 30 carbon atoms. The hydrocarbon group may be any of an aliphatic hydrocarbon group, an alicyclic hydrocarbon group, and an aromatic hydrocarbon group. When the hydrocarbon group is an aromatic hydrocarbon group, the number of carbon atoms of the hydrocarbon group is preferably 6 or more from the viewpoint of improving the solubility and heat resistance of the water-soluble resin composition in neutral water. 8 or more is more preferable, 10 or more is further preferable, 30 or less is preferable, and 25 or less is more preferable.

The substituents include carbon atom, oxygen atom, nitrogen atom, sulfur atom, phosphorus atom, and silicon atom from the viewpoint of improving the solubility and heat resistance of the water-soluble resin composition in neutral water. In addition, those containing at least one selected from the group consisting of halogen atoms are preferable, and among them, a hydrocarbon group having 1 to 22 carbon atoms or an alkyl halide group having 1 to 22 carbon atoms is preferable, and a hydrocarbon having 1 to 16 carbon atoms is preferable. Groups are more preferred, and hydrocarbon groups having 1 to 12 carbon atoms are even more preferred.

In the general formula (2), ^{Xn +} is a sodium ion, potassium ion, lithium ion, ammonium ion, phosphonium ion, from the viewpoint of improving the solubility and heat resistance of the water-soluble resin composition in neutral water. It represents magnesium ion, calcium ion, barium ion, zinc ion, or phosphonium ion, and sodium ion, potassium ion, lithium ion, ammonium ion, or phosphonium ion is preferable, and phosphonium ion is even more preferable. Among the phosphonium ions, tetraalkylphosphonium ions are preferable, and tetrabutylphosphonium ions are more preferable, from the viewpoint of improving the solubility and heat resistance of the water-soluble resin composition in neutral water.

In the general formula (2), n is preferably 1 from the viewpoint of improving the solubility and heat resistance of the water-soluble resin composition in neutral water.

The content of the organic salt compound in the water-soluble resin composition is preferably 0.1% by mass or more, more preferably 1 from the viewpoint of improving the solubility of the water-soluble resin composition in neutral water. It is mass% or more, more preferably 4% by mass or more, and from the viewpoint of improving the heat resistance of the water-soluble resin composition, it is preferably 20% by mass or less, more preferably 10% by mass or less, still more preferably 5% by mass. It is as follows.

The content of the organic salt compound of the water-soluble resin composition, the view of improving the solubility in neutral water of the water-soluble resin composition, alkylsulfonate ion of the organic salt compound (R ¹ - The total ratio of the amount of substance (mol) of SO _3- ), the amount of substance of the hydrophilic group of the water-soluble resin (mol) and the amount of substance of the sulfonic acid base (mol) (alkyl sulfonic acid of the organic salt compound). The amount of substance of the ion / the total amount of substance of the hydrophilic group of the water-soluble resin and the amount of substance of the sulfonic acid base) is preferably 0.005 or more, more preferably 0.01 or more, still more preferably 0.02 or more. , 0.03 or more, and from the viewpoint of improving the heat resistance of the water-soluble resin composition, 0.35 or less is more preferable, 0.25 or less is more preferable, and 0.2 or less is further preferable.

(Compatible agent (component γ))
The water-soluble resin composition may contain a compatibilizer (hereinafter, also referred to as “component γ”) from the viewpoint of improving the adhesiveness between the primer layer and the base material, and the primer layer and the printing layer. Good. Examples of the compatibilizer include Bondfast (registered trademark) 7B, Bondfast 7M (above, manufactured by Sumitomo Chemical Co., Ltd.), Rotada (registered trademark) AX8840 (manufactured by Arkema), JONCRYL (registered trademark) ADR4370S, JONCRYL ADR4368CS, JONCRYL ADR4368F, JONCRYL ADR4368F. Examples thereof include ADR4300S (above, manufactured by BASF), ARUFON (registered trademark) UG4035, ARUFON UG4040, and ARUFON UG4070 (above, manufactured by Toagosei). Examples of the reactive compatibilizer having an acid anhydride group include Umex (registered trademark) 1010 (manufactured by Sanyo Kasei Co., Ltd.), Admer (registered trademark) (manufactured by Mitsui Chemicals Co., Ltd.), and Modiper (registered trademark) A8200 (manufactured by Nippon Oil & Fats Co., Ltd.). ), OREVAC (registered trademark) (manufactured by Alchema), FG1901, FG1924 (above, Kraton Polymer), Toughtech (registered trademark) M1911, Toughtech M1913, Toughtech M1943 (above, manufactured by Asahi Kasei Chemicals). Examples of the reactive compatibilizer having an isocyanate group include Carbodilite LA-1 (registered trademark) manufactured by Nisshinbo.

From the viewpoint of the strength of the printing primer layer, the content of the component γ with respect to 100 parts by mass of the component α of the water-soluble resin composition is preferably 1 part by mass or more, more preferably 2 parts by mass or more, and 3 parts by mass or more. Further, from the same viewpoint, 20 parts by mass or less is preferable, and 10 parts by mass or less is more preferable.

The water-soluble resin composition may contain components other than the above-mentioned components as long as the effect of solubility in neutral water is not impaired. Examples of the other components include resins other than the component α, plasticizers such as benzoic acid polyalkylene glycol diester, calcium carbonate, magnesium carbonate, glass spheres, graphite, carbon black, carbon fiber, glass fiber, talc, and wow. Examples thereof include fillers such as lastnite, mica, alumina, silica, kaolin, whiskers, and silicon carbonate, and elastomers.

Examples of the elastomer include acrylic elastomers, olefin elastomers, styrene elastomers, polyester elastomers, urethane elastomers, polyamide elastomers, and silicone elastomers. Among these, one or more selected from the group consisting of acrylic elastomers and styrene elastomers is preferable, and acrylic elastomers are more preferable. As the styrene-based elastomer, one or more selected from the group consisting of a styrene-butadiene copolymer and a styrene-butadiene-ethylene copolymer is preferable. As the acrylic elastomer, a methacrylic acid-alkyl acrylate copolymer is preferable. Examples of commercially available products of the elastomer include Clarity (registered trademark) LA2250, Clarity LA2140, and Clarity LA4285 (all manufactured by Kuraray Co., Ltd.). Examples of the olefin-based elastomer include Kraton (registered trademark) ERS polymer (manufactured by Kraton Polymer Co., Ltd.), Kraton A polymer, Kraton G polymer (manufactured by Kraton Polymer Co., Ltd.), "Tough Tech H" series, and "Tough Tech P" series (Asahi Kasei). Examples thereof include Chemicals), Septon (registered trademark), and Hybler (registered trademark) (above, Kraton Plastics).

The content of the elastomer of the water-soluble resin composition with respect to 100 parts by mass of the component α is preferably 0.1 part by mass or more, more preferably 1 part by mass or more, and 10 parts by mass from the viewpoint of improving the strength of the printing primer layer. The above is more preferable, and from the same viewpoint, 100 parts by mass or less is preferable, 60 parts by mass or less is more preferable, 40 parts by mass or less is further preferable, and 20 parts by mass or less is further preferable.

Others, if necessary, UV absorbers, antioxidants, silicon-based additives, fluorine-based additives, antistatic agents, silane coupling agents, adhesion aids, rheology control agents, antifogging agents, colorants, cross-linking agents , A pH adjuster, a film forming agent, a leveling agent, a thickener, a water repellent, an antifoaming agent and the like may be appropriately added.

The easy erasure information 5 can be displayed by, for example, the following method using the water-soluble resin described above.

[Display method on primer layer]
This display method includes a primer layer forming step of forming a primer layer on the surface of the packaging bag 3 and a printing layer forming step of forming a printing layer on the primer layer in this order. According to this display method, the packaging bag 3 is formed with an easy erasure information display unit (not shown) on which the easy erasure information 5 is displayed. The easy-to-erase information display unit is formed on the surface of the packaging bag 3 and includes a primer layer and a printing layer.

The primer layer forming step is a step of forming a primer layer on the surface of the packaging bag 3. The primer layer contains the above-mentioned water-soluble resin. The method for forming the primer layer on the packaging bag 3 is not particularly limited. For example, a coating liquid containing a water-soluble resin for printing primers or a water-soluble resin composition for printing primers is prepared, and the coating liquid is subjected to a gravure method or a letterpress (a gravure method). Conventional coating methods such as flexo) method, offset method, roll coater method (transfer method), spray method, brush coating method, inkjet method, screen method, die coating method, spin coating method, dip method, Mayer bar method, air knife method, etc. After applying with, there is a method of drying.

The concentration of the water-soluble resin in the coating liquid is preferably 1% by mass or more, more preferably 5% by mass or more, and 10% by mass or more, from the viewpoint of improving coating efficiency and uniformity of the primer layer. Further, 60% by mass or less is preferable, 50% by mass or less is more preferable, and 40% by mass or less is further preferable.
The solvent used for preparing the coating liquid is not particularly limited as long as it can be used as a solvent.

The method for drying the coating liquid applied on the packaging bag 3 is not particularly limited, and a conventional drying method can be applied.

The thickness of the primer layer should be 0.1 μm or more from the viewpoint of preventing printing ink or the like formed on the primer layer from penetrating the primer layer and adhering to the packaging bag 3 and from the viewpoint of cost reduction. Preferably, 0.5 μm or more is more preferable, 1 μm or more is further preferable, and from the viewpoint of improving the flexibility of the primer layer, improving productivity, and reducing costs, 50 μm or less is more preferable, 30 μm or less is more preferable, and 20 μm or less is further preferable. It is preferable, and more preferably 10 μm or less.

The print layer forming step is a step of forming a print layer on the primer layer. The printing method used in the printing layer forming step is not particularly limited, and for example, a screen printing method, an inkjet printing method, an electrophotographic printing method, a laser printing method, a letterpress printing method, a concave printing method, a flat plate printing method, and a stencil printing method. The law etc. can be used. The primer layer and the print layer may be formed continuously (in-line), or the primer layer and the print layer may be formed (printed) separately.

The easy erasure information 5 displayed by the above method can be erased from the packaging bag 3 by treating with neutral water having a predetermined temperature or higher. Examples of neutral water include water having a pH of 6 to 8 or an aqueous solution. Specific examples thereof include deionized water, pure water, tap water, and industrial water, and deionized water or tap water is preferable from the viewpoint of availability. In addition, the neutral water may contain other components such as a water-soluble organic solvent and a surfactant. Examples of the water-soluble organic solvent include lower alcohols such as methanol, ethanol and 2-propanol, glycol ethers such as propylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monotersial butyl ether and diethylene glycol monobutyl ether, and acetone. Examples thereof include ketones such as methyl ethyl ketone. Examples of the surfactant include anionic surfactants such as alkyl sulfates, alkyl ether sulfates, olefin sulfonates and alkyl ether carboxylates, cationic surfactants such as alkyltrimethylammonium salts, and polyoxyethylene alkyls. Nonionic surfactants such as ether and alkyl glycosides can be mentioned.

From the viewpoint of making the erasing operation of the easy erasing information 5 easier, the temperature of the neutral water used for erasing the easy erasing information 5 is lower than the temperature of the neutral water used for erasing the difficult erasing information 4 described later. On the premise of this, the temperature is preferably 40 ° C. or higher, more preferably 50 ° C. or higher, and even more preferably 60 ° C. or higher.

The method of erasing the easy erasing information 5 with neutral water is not particularly limited, and examples thereof include a dipping method of immersing the packaging bag 3 in neutral water, a running water method of applying running water to the packaging bag 3, and the like.

From the viewpoint of facilitating the recycling of the packaging bag 3, it is preferable that the difficult-to-erase information 4 is displayed with ink that can be removed from the packaging bag 3 at a heating temperature higher than that of the easy-erasing information 5. In this case, the difficult-to-erase information 4 can also be displayed by using the above-mentioned water-soluble resin for primer. The temperature of the neutral water used for erasing the difficult-to-erase information 4 is preferably higher than the temperature of the neutral water used for erasing the easy-to-erase information 5. From the same viewpoint as above, the temperature of the neutral water used for erasing the difficult-to-erase information 4 is preferably 60 ° C. or higher on the premise that the temperature of the neutral water used for erasing the easy-to-erase information 5 is higher than the temperature of the neutral water used for erasing the easy-to-erase information 5. , More preferably over 60 ° C, more preferably 70 ° C or higher, still more preferably 80 ° C or higher.

From the viewpoint of more appropriately removing the easy erasure information 5 and the difficult erasure information 4 from the packaging bag 3 according to the aspect of the distribution channel, the neutral water used for erasing the easy erasure information 5 and the erasure of the difficult erasure information 4 The temperature difference from the neutral water used in the above is preferably 20 ° C. or higher, more preferably 30 ° C. or higher.

When a water-soluble resin for a printing primer is used for displaying the difficult-to-erase information 4, the difficult-to-erase information 4 can be displayed by using the same method as the above-mentioned [Display method on the primer layer]. Further, the method of erasing the difficult-to-erase information 4 with neutral water is not particularly limited, and for example, in addition to the immersion method and the running water method, electrolytic cleaning, spray cleaning, scrub cleaning, ultrasonic cleaning and the like can be adopted. .. By erasing the difficult-to-erase information, the packaging bag 3 from which the primer layer and the printing layer have been removed can be obtained. Such a packaging bag 3 is more easily recycled. The difficult-to-erase information 4 may be erased by a method of erasing with steam of neutral water or heated steam, or a method of erasing in a heating environment such as a heating chamber.

In general, packing materials used for mail order such as online shopping are provided with ink for displaying information such as delivery information, stickers for displaying the information, and the like. Substances other than the raw materials of the packaging bag 3 become impurities in recycling the packaging bag 3. In particular, when printing or the like is directly applied to a packing material made of synthetic resin or the like, most of the packing material is discarded. In response to such a problem, if the above-mentioned water-soluble resin for a primer is used for displaying the easy-to-erase information 5 and the difficult-to-erase information 4, the information can be removed by neutral water, so that impurities in the packaging bag 3 are removed. Alternatively, the impurities can be reduced as much as possible, and recycling can be performed more smoothly.

As the water-soluble resin for the printing primer used for displaying the difficult-to-erasure information 4, a water-soluble resin different from the water-soluble resin for the printing primer used for displaying the easy-to-erase information 5 may be used. Further, in these water-soluble resins, the type of the hydrophilic group of the monomer unit having the hydrophilic group in the water-soluble resin can be appropriately changed according to the temperature of the neutral water used for erasing. Alternatively, the composition of the monomer unit constituting the water-soluble resin can be appropriately changed according to the temperature of the neutral water used for erasing. For example, when the temperature of the neutral water used for erasing is lowered, the ratio of the monomer unit A to the total of all the monomer units of the water-soluble resin is increased. Further, when the temperature of the neutral water used for erasing is increased, the ratio of the monomer unit A to the total of all the monomer units of the water-soluble resin is reduced.

Further, in the packaging bag 3 having a laminated structure, the temperature transmitted from the outside of the packaging bag 3 may be different in each layer. Utilizing this, the easy erasure information 5 and the difficult erasure information 4 have the same composition of the water-soluble resin for printing primers, the easy erasure information 5 is given to the outer surface of the packaging bag 3, and the difficult erasure information 4 is further packaged. It may be applied to the outer surface of a sheet (for example, an inner layer sheet) arranged inside the bag 3. When the packaging bag of such a form is treated with neutral water having a temperature equal to or higher than a predetermined temperature, even if the water-soluble resin has the same composition in the easy erasure information and the difficult erasure information, the inner side of the packaging bag 3 is larger than the outer side. Since the temperature is difficult to transmit, the easy-to-erase information given to the outer surface side (outside) of the packaging bag 3 is removed, but the difficult-to-erase information given to the inner surface side (inside) of the packaging bag 3 is not removed.

Further, by adjusting the exposed area of the primer layer in the easy erasure information display unit on which the easy erasure information 5 is displayed or the difficult erasure information display unit on which the difficult erasure information 4 is displayed, the ease of erasing such information is achieved. Can be controlled. Since a printing layer is formed on the primer layer in the easy erasing information display unit or the difficult erasing information display unit, the surface of the primer layer is covered with the printing layer. The larger the area exposed from the printing layer of the primer layer, the larger the contact area with neutral water, so that information can be easily erased. That is, by making the exposed area from the print layer in the easy erasure information display unit larger than that in the difficult erasure information display unit, the temperature of the neutral water used for erasing the easy erasure information 5 can be changed by erasing the difficult erasure information 4. It can be lower than the temperature of the neutral water used in.

The easy erasure information 5 and the difficult erasure information 4 may be displayed by a method other than the ink described above. For example, as difficult-to-erase information 4, an RFID tag storing recycling information and the like may be attached to the packaging bag 3. Further, the difficult-to-erase information 4 may be displayed by processing a part of the shape of the packaging bag 3. As the processing, for example, a notch is provided in a part of the packaging bag 3 according to the number of reuses. Further, the easy erasure information 5 and the difficult erasure information 4 may be displayed by an ink that becomes colorless when the temperature rises due to frictional heat, such as friction ink, in addition to the ink described above.

The display means of the easy erasure information 5 and the difficult erasure information 4 may be the same or different. For example, both of these information may be displayed using the above-mentioned water-soluble resin for printing primer and ink, or may be displayed using the above-mentioned sealing member. Further, one of these two pieces of information may be displayed by using the water-soluble resin for printing primer and the ink, and the other may be displayed by using the above-mentioned sealing member.

The material for forming the packaging bag 3 is not particularly limited. That is, the packaging bag 3 may be made of paper, synthetic resin, or other material. In the present embodiment, the packaging bag 3 is formed of a sheet material containing a synthetic resin, preferably a sheet material made of a synthetic resin. The sheet material constituting the packaging bag 3 is preferably a flexible packaging material.
The packaging bag 3 may be composed of one sheet. From the viewpoint of improving the strength of the packaging bag, the packaging bag 3 includes an outer layer sheet 11 forming the outer surface of the packaging bag and an inner layer sheet 12 forming the inner surface of the packaging bag, as shown in FIG. It is preferable that it is. That is, it is preferable that the packaging bag 3 has a laminated structure in which a plurality of layers composed of the outer layer sheet 11 and the inner layer sheet 12 are laminated. In this case, the packaging bag 3 can be formed by folding the laminated body of the outer layer sheet 11 and the inner layer sheet 12 in half or stacking the two sheets and sealing the surrounding three or four sides. Alternatively, the laminated body of the outer layer sheet 11 and the inner layer sheet 12 can be formed into a tubular shape, and both ends of the laminated body can be formed as a pillow bag sealed by a heat seal or the like. The packaging bag 3 of the present embodiment has an internal space 3a in a seal portion 15 in which all four sides of the laminated body are sealed in a plan view, and a region surrounded by the seal portion 15. From the same viewpoint as above, in the packaging bag 3, it is preferable that the outer layer sheet 11 and the inner layer sheet 12 are not joined in the region forming the internal space 3a.

As the sheet material used for each of the outer layer sheet 11 and the inner layer sheet 12, a single-layer or multi-layer known resin film can be used. From the viewpoint of smoother recycling described later, it is preferable that each sheet of the outer layer sheet 11 and the inner layer sheet 12 is composed of only a single layer or a multilayer resin film. Examples of the material for forming the outer layer sheet 11 and the inner layer sheet 12 include polyester resins such as polyethylene terephthalate, polypropylene resins, nylon resins, polystyrene resins, polyethylene resins, and synthetic resins such as polylactic acid resins.

From the viewpoint of effectively protecting the products housed in the internal space 3a of the packaging bag 3, it is preferable that the packaging bag 3 is filled with air in the internal space 3a. With such a configuration, when a load such as a load is applied to the packing body 1, the air in the internal space 3a functions as a cushioning material. In the present specification, the term “gas (air) is sealed” means that the gap 3c between the packaging bag 3 and the product 2 is filled with gas, and the packaging bag 3 is prevented from leaking to the outside. Means that is airtightly sealed. Therefore, before sealing the inside of the packaging bag 3 of the present embodiment, a gas such as air is sent into the packaging bag, and after sealing, an operation of increasing the internal pressure such as joining the inner surfaces of the packaging bags to increase the internal pressure. Is not required. The gas is preferably air, but in addition to air, it may be a mixed gas in which nitrogen and oxygen are mixed at a ratio different from that of ordinary air, nitrogen, helium, or the like.

In this embodiment, a plurality of packing bodies 1 can be stacked. Porosity G of the packing body 1 from the viewpoint of further improving the function of the cushioning material by air in the internal space 3a and from the viewpoint of easily stacking the plurality of packing bodies 1 when transporting or storing the plurality of packing bodies 1. Is preferably 30% or more and 80% or less, more preferably 32% or more and 70% or less, and further preferably 32% or more and 60% or less in a standard state (20 ° C., 1 atm). By transporting or storing a plurality of packaged bodies in a stacked state, it is possible to improve the transport efficiency in the distribution process of the product.

The porosity G is a value indicating the ratio of the volume V3 of the air pressure 3c between the packaging bag 3 and the product 2 to the volume V1 of the packaging body 1 as a 100% ratio, and is in a standard state, that is, the temperature is 20 ° C. , Measured under the condition that the atmospheric pressure is 1 atm (1 atm = 101.325 kPa).
The volume V1 of the package 1 and the volume V3 of the void 3c can be measured by any method capable of measuring both volumes, but are preferably measured by the following simple measuring method.

[Simple measurement method]
The package to be measured was allowed to stand in a closed space such as a room maintained in a standard state for a sufficient time until the volume became stable, and then installed indoors. The inner dimension of the bottom surface was 330 mm in diameter and 500 mm in depth. In a cylindrical water tank (water temperature 20 ° C.), the package to be measured is submerged until the whole is located below the water surface. Then, the difference (mm) between the water depth in the submerged state and the water depth before submerging is multiplied by the bottom area of the water tank to obtain the volume V1 of the package 1. The size of the water tank is not limited to the above dimensions as long as it is larger than the package 1, but it is preferably several times larger than the package.
Further, the volume V2 of the product is measured in the same manner as the method for measuring the volume of the package, except that the product taken out from the package instead of the package is submerged in the water in the water tank. When a plurality of products are included in the package, the total volume of all the products is defined as the product volume V2.
Then, the value obtained by subtracting the measured volume V2 of the product from the measured volume V1 of the package is defined as the volume V3 of the void 3c. If the product has a hole or space for water to enter inside, measure it with sealing tape or a water-resistant adhesive so that water does not enter, or check the hole or space from the outer shape of the product. The volume V2 of the product is obtained by a method such as calculating the volume of the product including the volume of the space.
Then, the porosity G (%) is obtained from the volume V3 of the void 3c and the volume V1 of the package 1 by the following equation (3).
Porosity G (%) = (volume V3 of void 3c / volume V1 of package 1) × 100 ... (3)

From the viewpoint of improving the stability when the packaging bodies 1 are stacked, the volume V1 of the packaging body in the standard state is a ratio to the volume V4 of the packaging bag in a state where the internal pressure of the packaging bag is increased to 1.1 atm. The swelling rate H, which is a value indicating the above as a percentage, is preferably 60% or more and 90% or less.
By setting the content to 60% or more, it is possible to prevent a large load from being directly applied to the products in the package when the packages are stacked, and the package can sufficiently function as a buffer container. Further, when the content is 90% or less, the volume of the packaging bag changes to some extent when the packaging bodies are stacked, and thereby the stability when the packaging bodies are stacked is further improved.
From such a viewpoint, the swelling rate H (%) is preferably 65% or more, more preferably 69% or more, preferably 90% or less, more preferably 88% or less, and preferably 65. % Or more and 90% or less, more preferably 69% or more and 90% or less, still more preferably 69% or more and 88% or less.

The volume V4 of the packaging body in which the internal pressure of the gap 3c is increased to 1.1 atm is such that an internal pressure gauge and an air injection pipe are attached to an empty packaging bag in a state where the product is not contained, and the internal pressure is applied through the air injection pipe. After injecting air until 1.1 atm, seal. An empty packaging bag with an internal pressure of 1.1 atm is submerged in a water tank until the packaging bag is completely hidden in water, and the volume of discharged water is measured. When submerging the package or empty packaging bag in water, avoid applying water pressure to the package or empty packaging bag as much as possible. The reason for preventing the application of water pressure is to prevent the volume of the packaging body and the empty packaging bag from being reduced due to the water pressure. A preferred form of submerging in water is a horizontal arrangement in which the surface having the largest area, for example, the outer surface of the sheet material forming the internal space of the package shown in FIG. 1 is parallel to the water surface.
Then, the swelling rate H (%) is obtained by the following equation.
The swelling rate H (%) = (volume V1 of the packaging body 1 / volume V4 of an empty packaging bag having an internal pressure of 1.1 atm) × 100 ... (4)

Further, the air enclosed in the internal space 3a of the packaging bag 3 may be enclosed at a pressure equal to or higher than atmospheric pressure. The measurement of the pressure inside the packaging bag 3 can be directly known by connecting the pressure gauge to the packaging bag. The pressure gauge uses OMRON / E8F2-A01C (MAX100kPa), and the pressure can be known by attaching the screw part at the tip of the pressure gauge to the connection port prepared in advance in the packaging bag. In the state of the individual packaging body (the state in which the product is contained), the internal pressure of the packaging bag is 0 to 0.5 kPa.

The display positions of the easy erasure information 5 and the difficult erasure information 4 on the packaging bag 3 are not particularly limited. From the viewpoint of facilitating the erasure of the easy erasure information 5, it is preferable that the easy erasure information 5 is provided on the outer surface of the outer layer sheet 11. Further, from the viewpoint of facilitating the display of the easy erasure information 5 and the difficult erasure information 4, it is preferable that the easy erasure information 5 and the difficult erasure information 4 are provided on the outer surface of the outer layer sheet 11 described later.

From the viewpoint of facilitating the reuse of the packaging bag 3, the number of times of reuse is calculated for the difficult-to-erase information 4 displayed on the packaging bag 3 to be reused after the resource utilization selection process of selecting whether to use the packaging bag 3 for reuse or recycling. It is preferable that the process of increasing once is performed. That is, it is preferable that the resource utilization method includes a recycling information updating step for increasing the number of reuses in the recycling information once for the difficult-to-erase information 4 of the packaging bag 3 to be reused after the resource utilization selection process. In the recycling information updating step of the present embodiment, when the manufacturer A reads the identifier of the packaging bag 3 to be reused, the recycling information stored in association with the identifier is stored in the recycling information database provided in the system described later. The process of increasing the number of reuses by 1 is performed. The recycling information updating step may be performed by the collection company E, the sorting company F, or the manufacturer A. When the number of reuses is indicated by the notch described above, the recycling information updating step may be a step of newly providing a notch in the packaging bag 3.

From the viewpoint of facilitating the recycling of the packaging bag 3, it is preferable to erase the difficult-to-erase information 4 in the collected packaging bag 3 after the resource utilization selection step. That is, it is preferable that the resource utilization method includes a difficult-to-erase information erasing step of erasing the difficult-to-erase information 4 of the packaging bag 3 after the resource utilization selection step. The difficult-to-erase information erasing step may be performed by, for example, a person who executes the resource utilization selection process such as the sorting company F, or a person other than the person who executes the resource utilization selection process such as the manufacturer of the packaging bag 3. May be good. However, when the difficult-to-erase information 4 is displayed by processing a part of the shape of the packaging bag 3, the resource utilization method does not have to include the difficult-to-erase information erasing step.

Next, the resource utilization support system of the present invention will be described based on a preferred embodiment thereof with reference to the drawings. The resource utilization support system of the present embodiment is suitably used for the resource utilization support method described above. FIG. 5 shows a block diagram of the resource utilization support system of the present embodiment. Hereinafter, the resource utilization support system 100 of this embodiment is also simply referred to as a system 100.

A case where the system 100 of the present embodiment is used in the above-mentioned resource utilization support method will be described as an example. In the present embodiment, the system 100 can be accessed via the network N with terminals (not shown) provided at each of the bases for executing the easy-to-erase information giving process and the bases for executing the difficult-to-erase information giving process. .. In the present embodiment, the base for executing the easy erasure information giving process is the business base of the manufacturer A of the product 2, and the base for executing the difficult-to-erase information giving process is the business base of the EC site supplier B. Each terminal provided in each of these business bases is composed of a general-purpose computer. Hereinafter, the terminal at the business base of the manufacturer A of the product 2 is also referred to as a manufacturer terminal, and the terminal at the business base of the EC site trader B is also referred to as an EC site trader terminal. Further, in the present embodiment, the base for executing the resource utilization selection process is the business base of the sorting company F.

The system 100 may be provided at any of the business bases of the manufacturer A, the EC site trader B, the delivery trader C, the collection trader E, and the sorting trader F, and is provided at the business bases of businesses other than these business bases. It may have been. Further, the management company of the system 100 may be a manufacturer A, an EC site company B, a delivery company C, a collection company E, a sorting company F, or a company other than these. In this embodiment, the system 100 will be described as being under the control of manufacturer A.

The manufacturer terminal includes a product information database D1 that stores product information. The product information includes product specification information, identification information of the packaging bag 3 such as an identifier, material information of the packaging bag 3, the date of manufacture of the packaging bag 3, the production lot of the packaging bag 3, and the like. The product information stored in the product information database D1 may be artificially input by operating the manufacturer terminal. The business base of the manufacturer A is provided with a difficult-to-erase information giving means 30 for executing a difficult-to-erase information giving step and an identifier reading means 31 for executing a recycling information updating process. The manufacturer terminal is connected to the difficult-to-erase information giving means 30 and the identifier reading means 31 by wire or wireless communication. The difficult-to-erase information giving means 30 and the identifier reading means 31 exchange information with the system 100 via the manufacturer's terminal. Specifically, the difficult-to-erase information giving means 30 gives the identifier to the new packaging bag 3 based on the information of the identifier newly generated by the system 100. Further, the identifier reading means 31 reads the identifier in the reused packaging bag 3 and transmits the information of the identifier to the system 100. In the present embodiment, the difficult-to-erase information giving means 30 is a device for giving an identifier to the packaging bag 3 by using the above-mentioned [display method on the primer layer], and the identifier reading means 31 is a barcode reader.

The EC site vendor terminal includes an order information database D2 that stores order information from user D. The order information stores the name, address, desired delivery date and time of user D, delivery information such as the product name and quantity ordered by user D, purchase history information of user D, and the like. The order information stored in the order information database D2 may be artificially input by operating the EC site vendor terminal. The business base of the EC site trader B is provided with an easy-to-erase information giving means 40 and an identifier reading means 41 for executing the easy-to-erase information giving step. The EC site vendor terminal is connected to the easily erased information giving means 40 and the identifier reading means 41 by wire or wireless communication. The easy erasure information giving means 40 and the identifier reading means 41 transmit information to the system 100 via the EC site vendor terminal. Specifically, the easy erasure information giving means 40 gives the delivery information given to the packaging bag 3 to the packaging bag 3 based on the order information database D2, and transmits the delivery information to the system 100. Further, the identifier reading means 41 reads the identifier of the packaging bag 3 to which the delivery information is given by the easy erasure information giving means 40, and transmits the information of the identifier to the system 100. In the present embodiment, the easy erasure information giving means 40 is a device for giving an identifier to the packaging bag 3 by using the above-mentioned [display method on the primer layer], and the identifier reading means 41 is a barcode reader.

The business base of the sorting company F includes an imaging means 50 for grasping the damage and deterioration status of the packaging bag 3, a recovered identifier reading means 51, and a selection result display means 53 for displaying the selection result in the resource utilization selection process. And are provided. The system 100 can access the imaging means 50, the collected identifier reading means 51, and the selection result display means 53 at the business base of the sorting company F via the network N. The imaging means 50 and the recovered identifier reading means 51 transmit information to the system 100 via the network N. Specifically, the collected identifier reading means 51 reads the identifier of the collected packaging bag 3 and transmits the information of the identifier to the system 100. The imaging means 50 images the appearance of the packaging bag 3 and transmits the image data to the system 100. The selection result display means 53 receives information from the system 100 via the network. Specifically, the selection result display means 53 receives the selection result of the resource utilization selection process executed by the system 100 and displays the selection result. In the present embodiment, the imaging means 50 is a CCD camera, the recovered identifier reading means 51 is a barcode reader, and the selection result display means 53 is a display.

The system 100 includes an information input unit 121 for inputting delivery information and the number of reuses. The information input unit 121 acquires the delivery information given to the packaging bag 3 by the easy-to-delete information giving means 40 and the information of the identifier of the packaging bag 3 read at the business base of each business operator via the network N. For example, the information input unit 21 acquires the identifier information read by each of the identifier reading means 31 at the business base of the manufacturer A, the identifier reading means 41 at the business base of the EC site supplier B, and the collected identifier reading means 51. .. The information acquired by the information input unit 121 is stored in either the recycling information database D3 or the user information database D4 included in the system 100.

The system 100 includes an information output unit 122 that updates one or both of the delivery information and the number of reuses, and outputs the given information for giving the updated information to the reused packaging bag. The "output of the given information" includes the following aspects (a) to (c).
(A) Delivery information and update information of one or both of the number of reuses are recorded in a database provided in the system 100.
(B) Delivery information and update information of one or both of the number of reuses are recorded in a terminal connected to the system 100 via the network N.
(C) Delivery information and update information of one or both of the number of reuses are transmitted to the difficult-to-erase information giving means 30 or the easy-to-erase information giving means 40 connected to the system 100 via a network, and the difficult-to-erase information is given or Executes the addition of easy erasure information.

The information output unit 122 of the present embodiment outputs the given information in the embodiment (a). Specifically, the information output unit 122 outputs the update information (grant information) of the number of reuses to the recycling information database D3 and the user information database D4, and updates the information in any of the databases D3 and D4.
Further, when a new identifier is given to the packaging bag 3, the information output unit 122 outputs the given information in the mode of (c) above. Specifically, the information output unit 122 outputs (transmits) the information of the identifier stored in the recycling information database D3 and the recycling information associated with the identifier to the difficult-to-erase information giving means 30. The difficult-to-erase information giving means 30 gives difficult-to-erase information to the packaging bag 3 based on the information output from the information output unit 122. The aspect (c) also includes a mode in which the recycling information or the information (identifier) associated with the recycling information is newly added to the packaging bag 3.

When the system 100 is under the control of the EC site supplier B, the information output unit 122 may newly add the delivery information to the packaging bag 3 in the embodiment (c). Further, the information output unit 122 may update the delivery information stored in the order information database D2 in the embodiment (b).

When the difficult-to-erase information 4 is an RFID tag, the information output unit 122 outputs the given information in the mode of (c) above. Specifically, the information output unit 122 outputs the given information to an RFID writer (not shown). The RFID writer rewrites the information in the RFID tag based on the given information.

The system 100 of the present embodiment includes a recycling information database D3 for recording recycling information and a user information database D4 for recording user information about users. The recycling information includes information indicating the number of times the packaging bag 3 is reused.
In the recycling information database D3, the information of the identifier (difficult to erase information) given to the packaging bag 3 and the recycling information are stored in association with each other. For example, as shown in Table 1 below, recycling information is recorded for each identifier. The recycling information includes the number of reuses, the damage status, the material, and the maximum number of reuses for the packaging bag corresponding to the identifier. Further, the recycling information database D3 stores the user name and address to which the packaging body 1 including the packaging bag 3 corresponding to the identifier is delivered, which is associated with the identifier.

In the user information database D4, a part of the delivery information such as the user name and address and the collection information of the packaging bag 3 provided by the user for reuse or recycling are stored in association with the information of the identifier of the packaging bag. Has been done. For example, as shown in Table 2 below, collection information and a collection history identifier related to the identifier of the collected packaging bag are recorded for each user. The collection information includes the collection number of used packaging bags that the user has provided for reuse or recycling in the past, and information related to the collection point service such as collection points added according to the collection number. .. The collection history identifier is an identifier for each used packaging bag provided by the user in the past. The used packaging bag means a packaging bag that is collected with the delivery information erased.

The system 100 of the present embodiment includes an information generation unit 110 that generates information input by the information input unit 121 or information output by the information output unit 122. The information generation unit 110 includes an identifier generation unit 111, a recycling information generation unit 112, a recycling information updating unit 113, and a user information generation unit 114.
The identifier generation unit 111 generates an identifier to be given to the new packaging bag 3 to which the identifier is not given. Whether or not an identifier is assigned to the packaging bag is transmitted to the system by a signal from the identifier reading means 31 at the business base of the manufacturer A. For example, when a signal that the identifier information cannot be read is transmitted from the identifier reading means 31 and the system 100 receives the signal, the identifier generation unit 111 newly generates an identifier. From the viewpoint of facilitating the identification of the material and the like of the packaging bag 3, it is preferable that the identifier is associated with the product information of the packaging bag. For example, it is preferable that the serial number of the packaging bag or a character string combining the serial numbers is used as the identifier. The generated identifier information is transmitted by the information output unit 122 to the difficult-to-erase information giving means 30. Further, the generated identifier information is stored in the recycling information database D3 by the information input unit 121.
The recycling information generation unit 112 accesses the manufacturer's terminal to acquire the material of the packaging bag corresponding to the identifier and the maximum number of times of reuse, and generates recycling information based on this. The generated recycling information is stored in the recycling information database D3 by the information input unit 121.
The recycling information updating unit 113 generates information on the number of reuses for the packaging bag corresponding to the identifier based on the information of the identifier read by the identifier reading means 31 at the business base of the manufacturer A. Further, the recycling information updating unit 113 updates the information on the damage status of the used packaging bag based on the information of the identifier read by the collected identifier reading means 51. These generated update information is stored in the recycling information database D3 by the information output unit 122 as grant information. As a result, recycling information such as the number of times the packaging bag to be reused is reused is updated.

Based on the information of the identifier read by the collected identifier reading means 51, the user information generation unit 114 acquires the information of the user name and address of the collection source of the used packaging bag corresponding to the identifier, and obtains the user information. To generate. The user information generation unit 114 updates the number of collected used packaging bags stored in the user information database D4 according to the results of providing the packaging bags 3 for reuse or recycling. In addition, the user information generation unit 114 updates the collection points according to the number of used packaging bags collected. The updated information on the number of collected sheets and the collected points is stored in the user information database D4 by the information output unit 122.

From the viewpoint of facilitating resource utilization, it is preferable that the collection point can be an incentive for resource utilization for reusing or recycling the packaging bag 3. For example, the collection point may be a consideration for a preferential service or the like provided to the user D by the businesses A to C involved in the distribution route described above. For example, the collection point may be such that a predetermined collection point can be exchanged for the product of the manufacturer A. Instead, the collection points may be exchangeable for the product price of the EC site.

The system 100 includes a resource utilization selection unit 130 that selects whether to reuse or recycle the used packaging bag based on the recycling information. The resource utilization selection unit 130 of the present embodiment includes a comprehensive determination unit 131 that selects whether to use the product for reuse or recycling based on the number of times of reuse and the damage and deterioration status of the packaging bag. The comprehensive determination unit 131 includes a reuse number reference determination unit 133, an image analysis unit 136, and an image reference determination unit 135.
The reuse count standard determination unit 133 reuses and recycles the used packaging bag corresponding to the identifier read by the collected identifier reading means 51 based on the reuse count stored in the recycling information database D3. Select which one to use. For example, when the number of reuses of the used packaging bag is equal to or greater than the upper limit number of reuses, the reuse number reference determination unit 133 selects that the used packaging bag is to be recycled. When the number of reuses of the used packaging bag is less than the upper limit number of reuses, the reuse number reference determination unit 133 selects that the used packaging bag is to be reused. Alternatively, another determination unit using an index other than the number of reuses selects whether the used packaging bag is to be reused or recycled. The maximum number of reuses is recorded as product information of the packaging bag in the recycling information database D3.

The image analysis unit 136 analyzes the image data transmitted from the image pickup means 50 at the business base of the sorting company F. The image analysis unit 136 detects a damaged portion on the appearance of the packaging bag 3 by performing an image analysis of the image data, and reflects the damaged portion in the image data. For example, the image analysis unit 136 performs a process of adding a line diagram showing the outline of the damaged portion to the image data.

The image reference determination unit 135 determines whether or not the packaging bag is acceptable for reuse based on the image data in which the damaged portion is reflected by the image analysis unit 136. For example, when the area of the area surrounded by the diagram is equal to or larger than a predetermined area, the image reference determination unit 135 determines that the used packaging bag is not acceptable for reuse. Further, when the area of the area surrounded by the diagram is less than a predetermined area, the image reference determination unit 135 determines that the used packaging bag is acceptable for reuse. The criteria for determining whether or not the image can be reused by the image criterion determination unit 135 can be appropriately set.
The image reference determination unit 135 is one of the other determination units using an index other than the number of reuses described above.

As the system 100, a known general-purpose computer can be used. A general-purpose computer includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an HDD (Hard Disk Drive), and the like. Further, each means connected to the system 100 via the network N or the like includes a CPU. The processing performed by the system 100 and each of the above means is realized by the CPU expanding a program stored in a ROM, a disk, or the like into a RAM and executing the program. The processing may be realized by an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array), or may be realized by a combination of an ASIC and an FPGA.

In the present embodiment, a series of processes executed by the system 100 used in the resource utilization support method is also referred to as a resource utilization support process. FIG. 6 is a flow chart of resource utilization support processing.
First, the system 100 receives a signal as to whether or not the identifier in the packaging bag 3 is readable (step S1). If the identifier is readable, the process proceeds to step S5. If the identifier is unreadable, the process proceeds to step S2. The signal in step S1 is transmitted by the identifier reading means 31 at the business base of the manufacturer A.

If the identifier is unreadable in step S1, the identifier generation unit 111 generates an identifier newly assigned to the packaging bag 3 (step S2). The recycling information generation unit 112 generates recycling information by associating the generated identifier information with the product information (material, maximum number of reuses, etc.) of the packaging bag stored in the product information database D1, and inputs the information. Unit 121 stores it in the recycling information database D3 (step S3). The information output unit 122 transmits the information of the identifier stored in the recycling information database D3 in step S3 to the difficult-to-erase information giving means 30, and the difficult-to-erase information giving means 30 gives the identifier to the packaging bag (step S4). ). The process of step S4 is also referred to as a difficult-to-erase information addition process. By this process, difficult-to-erase information is given to the packaging bag 3. When step S4 is executed, the process proceeds to step S7.

When the identifier is readable in step S1, the recycling information updating unit 113 recycles the packaging bag corresponding to the identifier stored in the recycling information database D3 based on the information of the identifier read by the identifier reading means 31. Is updated (step S5). Specifically, 1 is added to the number of reuses (i _1). The updated number of reuses is stored in the recycling information database D3 by the information output unit 122 (step S6).
When step S6 is executed, the packaging body 1 including the packaging bag 3 to which the difficult-to-erase information is attached is transported from the manufacturer A to the EC site supplier B.

Next, the easy erasure information giving means 40 gives the delivery information to the packaging bag (step S7). The process in step S7 is also referred to as an easy erasure information addition process. By this processing, easy erasure information is given to the packaging bag 3. When step S7 is executed, the packing body 1 is delivered from the EC site company B to the delivery company C, and is delivered to the user D by the delivery company C. The user D takes out the product 2 from the packaging body 1 and erases the delivery information (easy erasure information) from the packaging bag 3. The used packaging bag whose delivery information has been erased is collected by the collection company E and delivered to the sorting company F.

The collected identifier reading means 51 provided in the business base of the sorting company F reads the identifier of the used packaging bag and transmits the information of the identifier to the system 100 (step S8). Based on the identifier read in step S8 and the recycling information associated with the identifier, the resource utilization selection unit 130 selects whether to use the used packaging bag corresponding to the identifier for reuse or recycling ( Step S9). The process of step S9 is also referred to as a resource utilization selection process. The information output unit 122 outputs the selection result of the resource utilization selection process and displays it on the selection result display means 53 (step S10).

The details of the resource utilization selection process will be described with reference to FIG. 7. FIG. 7 is a flow chart of resource utilization selection processing. Based on the used packaging bag identifier read in step S8, the reuse count standard determination unit 133 indicates that the reuse count (i ₁ ) of the packaging bag is equal to or greater than the reuse upper limit number registered in the product information of the packaging bag. Whether or not it is determined (step S21). In the present embodiment, the upper limit of the number of reuses is set to 5, so in step S21, it is determined whether or not the _{number of reuses (i 1) of the packaging bag is 5 times or more.} The maximum number of reuses can be set as appropriate depending on the material of the packaging bag and the like.
In step S21, when the number of reuses (i ₁ ) of the used packaging bag is equal to or greater than the upper limit number of reuses, the resource utilization selection unit 130 selects to use the used packaging bag for recycling (step S25).
In step S21, when the number of reuses (i ₁ ) of the used packaging bag is less than the maximum number of reuses, the system 100 acquires image data of the appearance of the used packaging bag transmitted from the imaging means 50 and analyzes the image. Unit 136 performs image analysis on the image data (step S22).
Next, the image reference determination unit 135 determines whether or not the used packaging bag is acceptable for reuse based on the data of the damaged portion detected by the image analysis unit 136 (step S23). When it is determined in step S23 that the used packaging bag is acceptable for reuse, the resource utilization selection unit 130 selects to use the used packaging bag for reuse (step S24).
As described above, the information output unit 122 causes the selection result display means 53 to display the selection result of step S25 or the selection result of step S24 (step S10).

Further, when step S8 is executed in the present embodiment, the user information generation unit 114 performs collection information processing for updating the collection information stored in the user information database D4. FIG. 8 is a flow chart showing the collected information processing. When step S8 is executed, the user information generation unit 114 uses the user name, address, etc., which is the collection source of the used packaging bag corresponding to the identifier, based on the information of the identifier read by the recovered identifier reading means 51. (Step S31). Next, the user information generation unit 114 updates the user collection information acquired in step S31 (steps S32 to S34). Specifically, 1 is added to the number of used packaging bags collected from the user (i ₂ ) (step S32). The user information generation unit 114 calculates the collection points based on the updated number of collections (step S33), and updates the collection points stored in the user information database D4 based on the calculated collection points (step S34).

Although the present invention has been described above based on the preferred embodiment thereof, the present invention is not limited to the above-described embodiments and embodiments.
For example, the system 100 includes an image reference determination unit 135 and an image analysis unit 136, but these may not be provided. That is, the system 100 may select whether to use the used packaging bag for reuse or recycling by using only the number of reuses as an index.
Further, in the embodiment of the resource utilization support method described above, the user D purchases the product through the EC site supplier B, but the resource utilization support method of the present invention uses a television or the like instead of the EC site. Used for shopping channels broadcast by broadcasting media such as radio, advertisements posted on advertising media such as advertisements for magazines and newspapers, distribution channels through catalogs purchased by bookstores and acquired by consumers by direct mail. May be good. Further, the method of receiving an order for a product is not limited to the Internet, and may be another method such as telephone, fax, or postcard.
Further, in the embodiment of the resource utilization support method described above, the EC site supplier B imparts easy erasure information including the delivery information of the user D to the packaging bag 3 of the packing body 1 manufactured by the manufacturer A. However, the manufacturer A may be entrusted by the EC site supplier B to add the easy erasure information.
Further, in the embodiment of the resource utilization support method described above, the product manufacturer A packs the product in the packaging bag 3 to manufacture the packing body 1, but the manufacturer A outsources the product to another packing company. The other packing company may manufacture the packing body 1.
Further, in the embodiment of the resource utilization support method described above, the manufacturer A of the product executes the difficult-to-erase information giving step, but the EC site supplier may execute the difficult-to-erased information giving step.
Further, the resource utilization support method of the present invention may be used in the mail-order business conducted by the manufacturer A without going through the EC site supplier B. In this case, the manufacturer A receives an order for the product on the EC site operated by the manufacturer A, and further manufactures the product, packs the product, and collectively adds easy-to-delete information such as delivery information.
Further, in the above-described embodiment, the system 100 includes a user information generation unit 114 and a user information database D4 so that collection points can be added according to the number of reuses, but these may not be provided.

1 Packing body 2 Product 3 Packaging bag 4 Difficult-to-erase information 5 Easy-to-erase information 100 System 110 Information generation unit 121 Information input unit 122 Information output unit 130 Resource utilization selection unit D3 Recycling information database D4 User information database

Claims (11)

It is a resource utilization support method that supports the utilization of resources by collecting the packaging bag and reusing or recycling the packaging bag after delivering the packaging body in which the product is contained in the packaging bag to the user.
An easy erasure information giving step that can be easily erased and gives easy erasure information including delivery information for delivery to the user to the packaging bag.
A difficult-to-erase information imparting step of imparting difficult-to-erase information to the packaging bag, which is more difficult to erase than the easy-to-erase information and includes recycling information as an index for determining reuse or recycling of the packaging bag.
A resource utilization support method including a resource utilization selection step of selecting whether to reuse or recycle the packaging bag collected in a state where the delivery information has been erased, based on the recycling information. The resource utilization support method according to claim 1, wherein the packaging bag has a laminated structure in which a plurality of layers are laminated. The resource utilization support method according to claim 1 or 2, wherein the packaging bag is made of a synthetic resin sheet. The resource utilization support method according to any one of claims 1 to 3, wherein the easy erasure information is given to the outer surface of the packaging bag. The resource utilization support method according to any one of claims 1 to 4, wherein the easy erasure information is displayed by ink that can be removed from the packaging bag by heating to a predetermined temperature or higher. The resource utilization support method according to claim 5, wherein the difficult-to-erase information is displayed by ink that can be removed from the packaging bag at a heating temperature higher than that of the easy-to-erase information. The resource utilization support method according to any one of claims 1 to 6, wherein the difficult-to-erase information in the collected packaging bag is erased after the resource utilization selection step. It is a resource utilization support method that supports the utilization of resources by collecting the packaging bag and reusing or recycling the packaging bag after delivering the packaging body in which the product is contained in the packaging bag to the user.
An easy erasure information giving step that can be easily erased and gives easy erasure information including delivery information for delivery to the user to the packaging bag.
A difficult-to-erase information imparting step of imparting difficult-to-erase information to the packaging bag, which is more difficult to erase than the easy-to-erase information and includes recycling information as an index for determining reuse or recycling of the packaging bag.
It includes a resource utilization selection step of selecting whether to reuse or recycle the packaging bag collected in a state where the delivery information has been erased, based on the recycling information.
The resource utilization support method, wherein the easy erasure information is displayed by ink that can be erased from the packaging bag by heating to a predetermined temperature or higher. The resource utilization support method according to claim 8, wherein the ink can be erased with neutral water having a temperature of 40 ° C. or higher. It is a support system that supports the utilization of resources for reusing or recycling the packaging bag by collecting the packaging bag after delivering the packaging body in which the product is contained in the packaging bag to the user.
The packaging bag can be easily erased, and can be easily erased information including delivery information for delivery to the user, and is more difficult to erase than the easy erasing information, and can be used as an index for determining reuse or recycling of the packaging bag. Difficult to erase information including recycling information is given.
The recycling information includes information indicating the number of times the packaging bag is reused.
An information input unit for inputting the delivery information and the number of reuses, and
A resource utilization support system including an information output unit that updates one or both of the delivery information and the number of reuses and outputs the given information for giving the updated information to the reused packaging bag. .. The tenth aspect of claim 10, further comprising a resource utilization selection unit for selecting whether to reuse or recycle the packaging bag collected in a state where the delivery information has been erased, based on the recycling information. Resource utilization support system.

Images