JP3232742U - Reusable bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry a bag when a purchaser goes shopping, which can be used many times, improve the recycling recovery rate of the bag, save the trouble of recycling, and can recycle the bag at a lower cost and in the bag. Provided is a reusable bag having a means for printing a QR code (registered trademark), easily obtaining information on a specific store related to the QR code, and improving the ability of the store to attract customers. SOLUTION: This is a reusable bag made of a non-woven fabric, and a film 4 having a printing ink layer 5 adheres the printing ink layer to the surface of the bag via an adhesive layer having hot water solubility. A reusable bag that is bonded facing the layer side and has a QR code printed on the bag, which leads to an improvement in the ability of a specific store to attract customers from the information available from the QR code. [Selection diagram] Fig. 1

Description

The present invention relates to a reusable bag that is easy to recycle and is provided with a means for transmitting information to a purchaser at a store. More specifically, the bag is a non-woven fabric, has a film on the surface of the bag, and a QR code (registered trademark) is printed on the film together with advertisements as a means of transmitting information to the purchaser for reuse. With respect to a reusable bag that is easy to separate and remove the film and is inexpensive.

Non-woven fabric shopping bags are used by printing store characters, logos, advertisements, etc. on colorless or dyed non-woven fabrics in order to identify each store. In order to facilitate the recycling of this printed non-woven shopping bag, for example, it has a silk screen printing ink layer that can be silk screen printed with aqueous flexo ink to which polyvinyl alcohol has been added and removed with warm alkaline water containing a detergent. A non-woven fabric bag has been proposed (see Patent Document 1).
On the other hand, an example of using a QR code in a payment system of a retail store has been proposed (see Patent Document 2).

Japanese Unexamined Patent Publication No. 2012-201747 Japanese Unexamined Patent Publication No. 2020-190835

Patent Document 1 describes that the recovered non-woven fabric bag can be reused as a recycled raw material for the non-woven fabric by immersing the recovered non-woven fabric bag in a warm alkaline aqueous solution containing a detergent to remove the printing ink layer and washing the non-woven fabric. However, a part of the removed printing ink layer dissolves or disperses in a warm alkaline aqueous solution and adheres to and colors the non-woven fabric. Therefore, in order to use the recovered non-woven fabric as a recycled raw material, it is not only washed but also decolorized or dyed. It is not possible to provide an inexpensive shopping bag because it requires a process of printing, which is troublesome and costly.
In addition, retailers need to bear the cost of distributing or discounting non-woven shopping bags, which are more costly than disposable shopping bags. Then, it is desired that the shopping bag is provided with a means for improving the ability to attract customers and the purchase motivation of the purchaser to meet the burden.
Therefore, the present invention is a bag that is easy for the purchaser to carry when shopping, and the purchaser can easily obtain information on a specific store, thereby motivating the purchaser to purchase and attracting customers to the specific store. It is an object of the present invention to provide a bag provided with a means for improving power, which can be recycled at a low cost, and which can be reused to promote the recycling and collection of the bag.

As a result of studies to solve the above problems, the present inventor uses a non-woven fabric that can be used more times, and when recycling, the film can be easily separated from the non-woven fabric bag, and when the non-woven fabric is separated, printing is performed. A separate patent application was filed for a recycling method in which the printing ink layer does not separate from the film having the ink layer and the non-woven fabric is not colored or dyed. Further, the present inventor has conceived a reusable bag on which the promotion logo or QR code can be printed or attached to the bag as a means for easily obtaining the promotion of the specific store and the information of the specific store. The present invention was completed here. That is, the present invention comprises the following aspects.
[1] A reusable bag
A film having a printing ink layer on which a QR code is drawn is in contact with the surface of the bag, and an adhesive layer having hot water solubility is interposed between the film and the bag, so that the film is placed in the bag. Adhesive reusable bag.
[2] The reusable bag according to [1], wherein the film having the printing ink layer is a film having a gravure printing ink layer.
[3] The reusable bag according to [1] or [2], wherein the adhesive layer comprises a polymer blend containing polyvinyl alcohol, modified polyvinyl alcohol or a mixture thereof.
[4] The reusable bag according to any one of [1] to [3], wherein the bag is made of polypropylene non-woven fabric or polyethylene non-woven fabric, and the film is made of polyethylene terephthalate film.
[5] Reuse according to any one of [1] to [4], wherein a QR code for displaying information on the store and recycling is drawn on the film together with a store advertisement or logo. Possible bag.
[6] The reusable product according to any one of [1] to [4], wherein a QR code for displaying information about the product is drawn on the film together with a product advertisement or logo. bag.
[7] The QR code is the re-described in [1] or [5] that displays information including the URL of the store, the leaflet of the store, the coupon of the store, the payment of the store, or the video related to the recycling of the bag. Usable bag.
[8] The reusable bag according to [1] or [6], wherein the QR code displays information including a product URL, product information, or a video about cooking using the product.
[9] A bag with a film having a hot water-soluble adhesive layer interposed between the film and the bag is immersed in warm water or alkaline water, the film and the bag are separated, the bag is taken out, and the bag is washed or washed. The reusable bag according to [4], which can be used in a recycling method for reproducing a non-woven fabric bag by mixing or laminating a virgin non-woven fabric raw material with the obtained non-woven fabric after crushing and opening the fiber.
[10] A reusable bag in which a film having a printing ink layer is adhered to the surface of the bag, and an adhesive layer having hot water solubility is interposed between the film and the bag. A reusable bag with a removable plastic plate with a QR code on the surface.

If the QR code of the store or the product is printed on the reusable bag of the present invention, the purchaser can easily obtain the information of the store or the product from a smartphone or the like. This information enhances purchasing motivation and leads to improvement in the ability to attract customers at specific stores.
If the QR code for bag recycling is printed on the reusable bag of the present invention, the purchaser (bag user) can obtain information on bag recycling from the QR code using a smartphone or the like, and the bag can be recycled. Can contribute to collection.
If the QR code information printed on the reusable bag of the present invention is a moving image, the purchaser can obtain easy-to-understand information from a smartphone or the like.
When the film is adhered to the reusable bag of the present invention, the bag to which the film is adhered can be printed from the bag simply by immersing it in warm water or alkaline water, if the adhesive layer having high hot water solubility is used. The film having the ink layer can be easily separated.
When the film is separated from the reusable bag of the present invention with warm water or alkaline water, if the bag made of non-woven fabric is made of polypropylene or polyethylene, the bag floats in warm water or alkaline water, and the film is made of polyethylene terephthalate. Then, since the film sinks in warm water or alkaline water, the bag and the film can be easily separated individually.
If the reusable bag of the present invention is a bag made of polypropylene or polyethylene non-woven fabric, cleaning, opening, and reproduction during recycling can be inexpensive.
According to the reusable bag of the present invention, the printing ink layer is prevented from being dissolved and dispersed in warm water or alkaline water, so that the printing ink layer does not color the non-woven fabric when separated.
According to the reusable bag of the present invention, the QR code of the store and the product can be clearly printed, so that malfunctions when the QR code is taken in from a smartphone or the like are reduced.

1A and 1B are views of a bag made of non-woven fabric, FIG. 1A is a perspective view, and FIG. 1B is an enlarged view of a printed portion of a film having a printing ink layer cut out in a circular shape. FIG. 2 is a perspective view of a bag made of non-woven fabric to which a plastic plate having a QR code printed on its surface is attached with a ball chain. FIG. 3 is a cross-sectional view taken along the line AA'of FIG.

What the purchaser has when shopping is not a disposable bag but a reusable bag that is premised on recycling. The reusable bag has the strength to withstand 10 or more purchases, and can be distributed free of charge or sold at a discount from the store on the premise of recycling. If the purchaser can obtain the bag at a low price, the purchaser will carry the bag when going to the store. When this happens, certain retailers will want to convey the retailer's information to the purchaser who carries the bag. As a means for a purchaser to easily obtain information on a store or a product, there is a means for obtaining information from a QR code.
The reusable bag of the present invention is made of a non-woven fabric, and a film having a printing ink layer is adhered with the printing ink layer facing the adhesive layer side via an adhesive layer having a hot water solubility on the surface. It becomes. The printing ink layer is a gravure printing ink layer, and the surface of the film on the side having the printing ink layer is a processing surface selected from the group consisting of a corona processing surface, a plasma processing surface, and a frame processing surface. A QR code is printed on the film for information on the recycling of retailers, merchandise and bags. The QR code can also be printed on a plastic plate and attached to a bag.

<QR code>
The QR code is one of the matrix type two-dimensional bar coats, and data can be extracted using a camera or a two-dimensional scanner. The amount of data is about several hundred to several thousand bytes, depending on the type of QR code. The QR code can be easily generated by personal computer software or the like, and can be printed on the film by using a printing machine or the like. The QR code itself is just a pattern, and it is difficult to understand what the information is about, but the content can be estimated by printing characters on the top or bottom of the QR code.

The QR code can also be attached to a reusable bag with a plastic plate with the QR code printed on the surface. The plastic plate on which the QR code is printed may be attached to the bag at any place as long as it does not interfere with the use of the bag. For example, when it is attached to the handle portion of the bag, it can be attached by providing a plastic plate hole on which a QR code is printed, a ball chain, a binding band, or the like. As a result, the plastic plate on which the QR code is printed can be easily removed by removing the ball chain or the like, and can be attached to a new non-woven fabric bag.

A method of acquiring data from the QR code will be described. For the QR code data, the QR code pattern is used as video data by activating the QR code application of a smartphone or a mobile terminal including a mobile phone (hereinafter referred to as a smartphone, etc.) and taking a picture of the QR code with a camera unit of the smartphone or the like. Import it into a smartphone, etc. Smartphones and the like extract data from the captured QR code. If the obtained data is text data, the smartphone or the like displays it as characters on the screen or the like, and if it is URL (Uniform Resource Locator) data, the information on the homepage of the corresponding URL is acquired, and the smartphone or the like Display homepages and videos on the display screen. You can also lead to the screen where you can install the store's dedicated application from the homepage. By the series of operations, the purchaser can obtain the QR code information. It is important to make it easy for buyers to view retailer leaflets and obtain coupons. Further, as the QR code information, an Internet site showing a product description of the advertising product printed on the bag, a description of cooking using the product, and a description of recycling of the bag can be displayed on the screen. The QR code to be printed may be a URL for displaying the cover part of the corresponding homepage, or may be the URL of the corresponding part in the homepage. The QR code to be printed may be not only the URL of the site that displays the textual explanation page, but also the URL of the Internet site that distributes the moving image.

<Reusable bag made of non-woven fabric>
The reusable bag of the present invention may be a bag made of a non-woven fabric, and its size and shape are not particularly limited. For example, bags of various shapes such as shopping bags and suit bags can be mentioned. Preferably, a shopping bag that is often reused and easily collected as a recycled material after use, that is, a bag in the shape of a so-called plastic shopping bag can be mentioned.
The non-woven fabric is lightweight, can be folded and rolled, can be redeployed at the time of use and easily returned to its original shape, has excellent portability, and can be used as a reusable bag.
Further, since the bag made of non-woven fabric can be manufactured from the non-woven fabric and thread made of the same material, the bag can be easily regenerated as it is without the need for disassembly and separation.

As the non-woven fabric used for the reusable bag of the present invention, a known non-woven fabric can be used, and examples thereof include polyester, polyethylene, polypropylene, polyolefin, and vinylon.
The bag with a film is separated into a bag made of a film having a printing ink layer and a non-woven fabric by immersing the bag in warm water or alkaline water to dissolve the adhesive layer. The bag can have a lower specific density than hot water and alkaline water.
When the specific gravity is smaller than that of hot water and alkaline water, a non-woven fabric having a specific gravity of 0.99 or less, preferably 0.95 or less can be mentioned. For example, polypropylene generally has a specific density of 0.90 to 0.91, and polyethylene generally has a specific density of 0.94 to 0.97.
Considering the ease of regeneration, strength, moldability, and the like as the non-woven fabric, a non-woven fabric made of polyolefin, for example, a polyethylene non-woven fabric or a polypropylene non-woven fabric is preferably used. Of these, polypropylene non-woven fabric, which is easy to regenerate, is preferable.

When joining the sides and bottom of a bag made of non-woven fabric, a known method can be used for joining. For example, a heat seal or an ultrasonic seal can be used, or the same polypropylene thread as the non-woven fabric or a thread having high hot water solubility can be sewn. As a result, the bag made of non-woven fabric can separate the film having the printing ink layer and use it as a recycled raw material without adding a step of removing the thread. The bag made of non-woven fabric is preferably joined to a load-bearing portion such as a bottom surface portion or a joint portion between a handle and a bag body by sewing with a stronger bonding force than a heat seal. The yarn having hot water solubility may have the same degree of solubility as the adhesive layer of the present invention. For example, polyvinyl alcohol fiber or vinylon fiber can be mentioned.

<Film>
Examples of the film base material include transparent resin films such as polyester film, polyethylene film, polypropylene film, polystyrene film, vinyl chloride film, polyethylene terephthalate film and nylon film.
The bag with a film is separated into a bag made of a film having a printing ink layer and a non-woven fabric by immersing the bag in warm water or alkaline water to dissolve the adhesive layer.

The film can have a higher specific density than hot water and alkaline water. When the specific gravity is larger than that of hot water and alkaline water, a film having a specific density of 1.01 or more, preferably 1.05 or more, can be mentioned. For example, polystyrene generally has a specific density of 1.04 to 1.09, polyester generally has a specific density of 1.10 to 1.46, and polyethylene terephthalate generally has a specific density of 1.34 to 1.39.
Among the above-mentioned film substrates, polyethylene terephthalate (PET) film is preferable from the viewpoint of scratch resistance, transparency, water resistance, weather resistance and processability.
The thickness of the film substrate is preferably 10 μm or more, more preferably 12 μm or more, and preferably 100 μm or less, more preferably 60 μm or less, still more preferably, from the viewpoint of improving ink transferability and suppressing plate fog. Is 40 μm or less.

The film can also be adhered to the reusable bag of the present invention in two or more places. When the film is adhered to two or more places, the pattern, characters, etc. of the printing ink layer may be the same or different. For example, a film printed with a logo mark or the like for identifying the company (dealer, etc.) is adhered to one side of a bag made of non-woven fabric, and a film printed with advertisements of other companies' products is printed on the other side. It may be glued.

<Printing on film>
The printing method of the printing ink layer is not particularly limited as long as it is a method adopted for printing on a film. For example, letterpress printing such as flexo printing and letterpress printing, concave printing such as gravure printing, flat plate printing such as offset printing, and stencil printing such as silk screen printing can be adopted. In particular, flexographic printing or gravure printing is preferable from the viewpoint of printability, cosmeticity, hygiene and convenience on a film base material such as PET film. Further, when printing a QR code or the like, gravure printing is more preferable.
From the viewpoint of improving printability, the surface to be printed on the film substrate was oxidized by corona treatment, plasma treatment, frame treatment, hot air treatment, chromic acid treatment, ozone / ultraviolet treatment, etc. to improve wettability. By forming the treated surface, the adhesion between the printing ink layer and the adhesive layer described below can be improved. In particular, it is preferable that the surface to be printed is a treated surface by corona treatment, plasma treatment or frame treatment. In the present invention, it is preferable to perform corona treatment on the film surface with a corona treatment device.

The printing ink may be any ink that does not dissolve in warm water or an aqueous alkaline solution, and the ink used for conventional flexographic printing or gravure printing can be used. Of these, water-based inks and UV-curable inks are preferable from the viewpoint of being environmentally friendly without using a solvent.
The logo mark unique to each store, the advertisement of the company or its product, the QR code, etc. are printed on the back of the film. The surface of the printing ink layer of the present invention is protected by a film. Therefore, it is possible to prevent the printing ink layer from being damaged, peeled off, or the color is deteriorated when the bag with the film is used.

<Adhesive layer>
The adhesive layer in the present invention is a layer made of an adhesive capable of adhering the surface of the bag body made of the non-woven fabric of the present invention and the surface having the printing layer of the film. The adhesive layer of the present invention is insoluble in low-temperature water from the viewpoint that the film-attached bag of the present invention is required not to be peeled off even when wet with rain, while the film can be easily formed from the surface of the film-attached bag. In order to separate them, it is required to have a property of being easily dissolved when immersed in warm water of, for example, 50 ° C. or 60 ° C. or higher. Therefore, the solubility of a polymer satisfying these requirements is preferably less than 20 g with respect to 100 g of water at 20 ° C. and 60 g or more with respect to 100 g of water at 50-60 ° C.

In the present invention, an adhesive layer containing polyvinyl alcohol (generally called Poval) is preferably used as the adhesive layer having the above-mentioned properties.
The polyvinyl alcohol used in the present invention is not particularly limited as long as it is a polyvinyl alcohol having water resistance as described above, and may be a modified polyvinyl alcohol having various modifying groups such as an alkoxy group, an ester group and an alkylene ether group. .. The saponification degree is preferably 97.5 mol% or more.
Commercially available products of polyvinyl alcohol and modified polyvinyl alcohol include, for example, the product name "Kuraray Poval" (registered trademark) of Kuraray Co., Ltd., the product name "Denka Poval" (registered trademark) of Denka Co., Ltd., and the product name of Mitsubishi Chemical Co., Ltd. Examples thereof include "Gosenol" (registered trademark) and "Gosenex" (registered trademark).

The adhesive layer in the present invention is formed into a non-woven film by, for example, applying or spraying the polymer or a solution obtained by dissolving or dispersing the polymer in water or a solvent onto the surface of the film having a printing ink layer, and pre-drying the film if necessary. The film can be formed between the non-woven fabric and the film by (heating) pressure bonding or heat fusion.

The adhesive layer of the present invention is dissolved by immersing it in warm water or alkaline water. The film-attached bag separates into a film and a bag as the adhesive layer dissolves. The printing ink layer on the separated film surface is generally water-insoluble and difficult to dissolve even in warm water or alkaline water. Further, when the surface of the film having the printing ink layer is a treated surface selected from the group consisting of corona treatment, plasma treatment and frame treatment, the printing ink layer is not easily separated from the film in warm water or alkaline water. Therefore, the ink in the printing ink layer does not dissolve or disperse in warm water or alkaline water, and the bag made of the non-woven fabric is not colored or dyed.

<Recycling system>
The store collects used film bags that have been repeatedly used by the purchaser. In order to collect more used bags with film that have been used repeatedly, the retailer can replace them with new bags with film free of charge, provided that the purchaser brings the bags with used film to the retailer. You can sell at a discount.

The collected bag with film is collected in a regenerating facility, immersed in warm water or alkaline water, and the film is separated and taken out. The taken-out bag is dried to finish it as a reusable non-woven fabric bag, or the bag made of the taken-out non-woven fabric is crushed and opened, and the obtained non-woven fabric raw material is mixed or laminated with the virgin non-woven fabric raw material. , And remanufacture a reusable non-woven bag from mixed or laminated materials.

<Solvent for separating the film having the printing ink layer from the bag with the film>
Since the adhesive layer of the present invention has a property of being difficult to dissolve in acidity and easily dissolving in alkalinity, it can be dissolved by using warm water at 50 ° C. or higher, preferably 60 ° C. or higher, or as alkaline water, for example, an aqueous sodium hydroxide solution or the like. It can be easily dissolved by using alkaline water.
Since the solvent for separating the film having the printing ink layer from the film-attached bag uses only water without using an organic solvent or the like, there is no effect on the health of the worker, and further, the environment such as soil contamination is affected. There is no influence of. However, when disposing of alkaline water, it is necessary to make it neutral after pH adjustment.

Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited to these examples.

<Structure of shopping bag>
The structure of the shopping bag 1 shown in FIG. 1 will be described. The shopping bag 1 adheres the PET film 4 to the polypropylene non-woven fabric 3. The polypropylene non-woven fabric 3 forms a handle portion 14, a sealing piece 15, and an ear portion 16, and has side portions 18 ultrasonically sealed on both the left and right sides. A QR code 11 or the like is printed on the PET film 4.
When the QR code is not printed on the film of the shopping bag 1, a plastic plate 21 having the QR code printed on the surface is prepared. FIG. 2 shows a shopping bag 1 to which a plastic plate 21 having a QR code printed on its surface is attached by a ball chain 22.
FIG. 3 shows a cross-sectional view taken along the line AA'in which the printed portion of the film having the printing ink layer in the shopping bag 1 (FIG. 1) is cut out in a circular shape. The printed surface on the right side of the PET film 4 shown in the cross-sectional view is corona-treated by a corona processing apparatus to form the corona-treated surface 6. The printing ink layer 5 is printed on the right side of the corona-processed surface 6 by a gravure printing machine. Next, a polyvinyl alcohol aqueous solution is applied from the right side to form a film having an adhesive layer 7, and the film is pressure-bonded to the polypropylene non-woven fabric 3. As a result, the propylene non-woven fabric 3 in which the film 4 having the gravure-printed printing ink layer 5 is adhered via the adhesive layer 7 having hot water solubility can be obtained.

The shopping bag 1 is made of polypropylene non-woven fabric, and even if many products or heavy products are put in, the bag does not tear or tear from the joint on the side of the bag, and even if a product with corners is put in, the bag body is Since it does not stretch and tear, the load limit of the contents to be packed in the bag and the allowable volume can be significantly improved as compared with the conventional plastic shopping bag. Therefore, the shopping bag 1 of the present invention can usually be used repeatedly 10 times or more even if a heavy product or a bulky product is put in and used repeatedly. The shopping bag 1 is lightweight, can be folded compactly, and can be easily redeployed and returned to its original shape after folding, making it very suitable for carrying.

<How to use the QR code>
The QR code 11 is printed on the PET film 4 of the shopping bag 1 of FIG. The QR code 11 is captured in a smartphone or the like by activating a QR code application such as a smartphone and taking a picture of the QR code 11 with a camera unit of the smartphone or the like. The smartphone or the like extracts the captured QR code 11 data. If the obtained data is text data, the smartphone or the like displays it on the screen or the like as a character display screen, and if it is URL data, the information on the homepage of the corresponding URL is acquired and displayed on the screen of the smartphone or the like. Display the home page. As an example 1, if the QR code 11 is a URL that guides the user to a screen for installing the dedicated application software of the store, the purchaser captures the URL of the QR code 11 by taking a picture of the QR code 11 with a smartphone or the like, and the URL thereof is taken in. Follow the screen guidance displayed by the URL to install the application software of the store in advance. The installed store application software can display leaflets and coupons of the store, display discounted products, and show the location of the product in the store. As an example 2, if the QR code 11 is the URL data of a leaflet / coupon, the purchaser captures the URL of the QR code 11 by taking a picture of the QR code 11 with a smartphone or the like with a camera unit of the smartphone or the like. It is possible to display the site of the leaflet / coupon of a specific store from the URL. In addition to the URL of the leaflet / coupon, the URL of the recycling information of the shopping bag, the URL of the product information, or the URL related to the dish using the product can be the QR code 11. It is also possible to display a video from the URL of information on recycling of shopping bags and information on cooking using products.

By manufacturing a reusable bag made of non-woven fabric, using the bag, collecting it as a used bag, and using it as a non-woven fabric sheet to make a bag made of non-woven fabric again, the bag can be recycled and reused. It becomes possible to do. Since such a reusable bag does not waste resources and does not require incineration, it does not generate carbon dioxide gas. Therefore, the present invention is very useful from the viewpoint of environmental protection and resource saving. .. In addition, by printing the QR code or attaching it with a plastic plate, the purchaser can obtain information on the store, the product, and the recycling at any time. This information can contribute to improving the purchasing motivation of purchasers, improving the ability of retailers to attract customers, and improving the recycling rate of bags.

1 Shopping bag, 3 Polypropylene non-woven fabric, 4 PET film,
5 Printing ink layer, 6 Corona treated surface, 7 Adhesive layer, 11 QR code 14 Handle part, 15 Sealing piece, 16 Ear part, 18 Side part,
21 plastic plates, 22 ball chains

Claims (10)

It ’s a reusable bag,
A reusable film having a printing ink layer on which a QR code is drawn is adhered to the surface of the bag, and an adhesive layer having hot water solubility is interposed between the film and the bag. bag. The reusable bag according to claim 1, wherein the film having the printing ink layer is a film having a gravure printing ink layer. The reusable bag according to claim 1 or 2, wherein the adhesive layer comprises a polymer blend containing polyvinyl alcohol, modified polyvinyl alcohol or a mixture thereof. The reusable bag according to any one of claims 1 to 3, wherein the bag is made of polypropylene non-woven fabric or polyethylene non-woven fabric, and the film is made of polyethylene terephthalate film. The reusable bag according to any one of claims 1 to 4, wherein a QR code displaying information on the store and recycling is drawn on the film together with a store advertisement or logo. .. The reusable bag according to any one of claims 1 to 4, wherein a QR code for displaying information about the product is drawn on the film together with a product advertisement or logo. The reusable QR code according to claim 1 or 5, which displays information including a store URL, a store leaflet, a store coupon, a video related to store payment or bag recycling. bag. The reusable bag according to claim 1 or 6, wherein the QR code displays information including a product URL, product information, or a video about cooking using the product. A bag with a film having a hot water-soluble adhesive layer interposed between the film and the bag is immersed in warm water or alkaline water, the film and the bag are separated, the bag is taken out, and the bag is washed or crushed. The reusable bag according to claim 4, which can be used in a recycling method for reproducing a non-woven fabric bag by mixing or laminating a virgin non-woven fabric raw material with the obtained non-woven fabric after opening the fiber. A reusable bag in which a film having a printing ink layer is adhered to the surface of the bag and an adhesive layer having hot water solubility is interposed between the film and the bag, and is a QR code. A reusable bag with a removable plastic plate drawn on the surface.

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