JP6974019B2 - Information label affixing system - Google Patents

Description

The present invention relates to a system for affixing a label displaying information related to delivery of goods to a bag or the like for storing goods to be delivered. In particular, when an article stored in a thin plastic bag is stored and delivered in a plastic container or a cardboard box that serves as a through box, the delivery destination and management related to the article stored in the thin plastic bag containing the article are stored. It relates to a system in which a label displaying necessary information is attached with an adhesive.

In recent years, home delivery systems have been developed in various industries, and there are packing methods for goods according to the systems. For example, in the case of general miscellaneous goods, there are a method of directly storing an article in a cardboard box, a paper bag, etc., a method of further storing an article packaged in a plastic bag, etc. in a cardboard box, a paper bag, and the like. Further, in the case of precision equipment, cracked goods, etc., a method of fixing and storing an article wrapped in a shock absorbing material such as an air cap to a cardboard box, a paper bag, or the like is often used. On the other hand, in the case of fresh foods such as milk, tofu, meat, and vegetables, and frozen foods, the articles sealed in a special plastic bag with oxygen barrier properties to keep them fresh and not thawed are plastics with high heat retention. A method of directly storing the food in a container, a method of wrapping an article sealed in a plastic bag in a thinner plastic bag, and storing the product in a plastic container having high heat retention are adopted.

In particular, in order to reliably deliver fresh foods such as milk, tofu, meat, and vegetables and frozen foods to the delivery destination, the ordered items from the target items sealed in various types and many plastic bags are delivered to the delivery destination. A method is preferably adopted in which the plastic containers having high heat retention, particularly a foamed styrol box, are stored in a thin plastic bag for each bag. In this case, in order to reliably deliver the ordered item to the client, the ordered item contains the type and quantity of the ordered item, the delivery destination, and various information required for work and management. It is necessary to be able to read in units of aggregated plastic bags. Therefore, various information is specified by a method of attaching a label on which information is printed on a plastic bag or a method of directly printing information on a plastic bag.

In any case, the plastic bag that collects such ordered items for each delivery destination is a very thin and almost transparent polyolefin film, so it is on the back side of the surface to which the label is attached or the surface to be printed. , A reaction force for attaching or printing a label is required, and a flat plate or the like that acts as an underlay is generally arranged.

Therefore, when printing information on such a thin plastic bag, a special printing device is required, it is difficult to increase the printing speed, and there is a problem that it is expensive. Further, there is a problem that the adhesiveness between the film which is a polyolefin and the ink is poor and the printed characters are peeled off. In particular, the characters printed on a thin and easily wrinkled plastic bag have poor quality, and the characters printed on a transparent film have an essential problem that they are difficult to read. From this point of view, the method of attaching a label is preferable, and it is often performed manually.

However, automatic labeling of labels on plastic bags is required. For example, in order to obtain the reaction force for attaching the above-mentioned label, the label is automatically attached to the folded surface by folding it around the opening of the bag at the opening of a plastic container or the like that serves as a box. There is a way to do it. Although this method is simple, the wrinkles of the plastic bag are not eliminated, and it is difficult to reliably attach the label. Therefore, there is a problem that the label is peeled off in the packaging process of tightening the opening of the plastic bag by various methods after the label is attached. Further, depending on how the plastic bag is tightened, there is a problem that the characters on the label are difficult to read. In some cases, the label is seen through the film surface of the plastic bag, so it may be difficult to read the characters in reverse regardless of the transparency of the film.

As described above, it is difficult to automatically attach a label to a thin and easily wrinkled plastic bag because the behavior of the plastic bag is complicated and a reaction force is required. Even if it is done manually, it takes a lot of effort to smooth out the wrinkles of the plastic bag and attach the label.

Regarding the problem of wrinkles in the method of folding around the opening of the plastic bag at the opening of the plastic container that becomes the box and automatically attaching the label to the folded surface, by spraying gas, A method of automatically attaching a label after pressure-welding a plastic bag to a box is disclosed (Patent Document 1).

Regarding the inversion of characters, a home delivery label with information printed in reverse on the opposite side of the adhesive surface of the transparent film is attached to the inner surface of the transparent plastic bag so that it can be seen from the outside of this transparent plastic bag. Therefore, a method devised so that the information printed on the home delivery label can be clearly read as a regular character has also been proposed (Patent Document 2). However, this method produces black characters on a transparent film and is difficult to read as in the method of directly printing information on a plastic bag.

However, there are problems that are difficult to solve with such measures. If the ordered item is fresh food such as milk, tofu, meat, vegetables, or frozen food, the plastic bag will also be cooled and the plastic bag will be in a dewed state, so the label will adhere to the plastic bag even by hand. hard. Even if the label is once attached to the plastic bag, it may peel off due to dew condensation in the delivery process that maintains the low temperature state, and it may not be possible to reliably deliver the ordered item to the client.

Therefore, it is possible to automatically and reliably attach a label that makes it easy to see the printed home delivery information to a thin, wrinkle-prone transparent plastic bag that can be stored in a plastic container or cardboard box that serves as a through box. There is a need for an information affixing system that does not peel off the label in the packing process of tightening the plastic bag and in the delivery process in which the low temperature of the plastic bag is maintained.

Japanese Unexamined Patent Publication No. 2002-179038 Japanese Unexamined Patent Publication No. 2005-241818

INDUSTRIAL APPLICABILITY According to the present invention, when an article stored in a plastic bag is stored and delivered in a plastic container, a cardboard box, or the like as a through box, a label on which the printed home delivery information is easy to see is attached to the plastic bag for storing the article. It can be attached automatically and securely even in a low temperature environment, and the information label on which the delivery information is printed does not peel off during the packing process of tightening the plastic bag and the delivery process where the low temperature state of the plastic bag is maintained. The purpose is to provide an information labeling system.

In particular, in the process of the distribution system, an information label that makes it easy to see the delivery information is automatically attached to the plastic bag that collects frozen foods, etc. wrapped in a special plastic bag for each delivery destination, without peeling off. This is extremely difficult because the plastic bag is made of polyolefin, thin, has no reaction force, and has a low temperature, and it was common to rely on manual work.

Therefore, the present invention relates to a distribution system in which an information label on which home delivery information is printed is attached to a thin plastic bag containing an ordered item, and the product is stored and delivered in a plastic container or a cardboard box that serves as a through box. A label affixing system suitable for this distribution system, a base material and an adhesive constituting the label can be examined, and a principle that a label can be easily affixed to a three-dimensionally inflated balloon or the like can be applied to the distribution system. As a result of examining the method, the present invention has been completed.

That is, the present invention has a container in which a bag capable of storing an article can be inserted and held, and information related to delivery of the article in at least a part of the inside of the bag inserted and held in the container. In an information label affixing system equipped with an information label affixing means for automatically affixing the displayed information label and a blower means for blowing air to the side wall of the container, which is installed on the side of the information label affixing means, the information label is provided. However, the base material of the pressure-sensitive adhesive layer includes at least an opaque base material, a printing layer formed on one side of the base material, and a pressure-sensitive adhesive layer formed on the opposite side of the printing layer with respect to the base material. It is an information label affixing system characterized in that a curved surface and a pressure-sensitive adhesive having excellent low-temperature adhesiveness are exposed on at least a part of the opposite surface.

In order to obtain the reaction force for attaching the information label, this information label affixing system makes the area around the opening of the bag folded around the opening of the container, which is a box, and automatically attaches the information label to the folded surface. In this method, the bag is adhered to the side wall of the container without wrinkles by the wind force of the ventilation means, the adhesive area between the bag and the adhesive layer of the information label is expanded, and the curved surface and low temperature adhesiveness are obtained. The excellent adhesive enhances the adhesive strength at the initial stage of attaching the information label, and is characterized by reliable adhesion even in a low temperature environment. Therefore, it is possible to prevent the information label from peeling off both in the packing process of tightening the bag and in the delivery process in which the low temperature state of the bag is maintained.

The blowing means for bringing the bag into close contact with the side wall of the container without wrinkles may be driven in the step before the information label is affixed, but it is preferably driven at the same time as the information label affixing means. In order to enhance the effect of bringing the bag into close contact with the side wall of the container without wrinkles, it is more preferable to provide a charging means for generating an adhesive force between the container and the bag due to static electricity. The charging means is not particularly limited as long as it can generate an adhesive force due to static electricity between the bag and the container, and for example, an ion irradiation type corona charging device or the like can be installed and used. Charging is not limited as long as it is before the information label is attached to the bag, but before the bag is brought into close contact with the side wall of the container without wrinkles by the wind force of the blowing means, particularly, the bag to which the information label is attached. Is preferably done before being inserted into the container. Before the information label is attached, the charging means and the blowing means can be driven at the same time.

Further, the present invention provides an information label affixing system which is a further improvement of the above-mentioned information label affixing system in which an information label is affixed in the vicinity of an opening of a bag. That is, a bag capable of storing articles can be inserted and held, and has a side wall portion, an opening portion, and a bottom surface portion, and a window portion penetrating at least a part of the side wall portion or the bottom surface portion is provided. An information label affixing means for affixing an information label displaying information related to the delivery of goods to at least a part of the outside of the container and the bag inserted and held in the container, and an information label by the information label affixing means. In an information label affixing system comprising a reaction force generating means for generating a reaction through a window to the action of being affixed, an information label is formed on an opaque substrate and one side of the substrate. It is provided with at least a printed layer and a pressure-sensitive adhesive layer formed on the opposite side of the printed layer with respect to the base material, and has excellent curved surface and low-temperature adhesiveness on at least a part of the surface of the pressure-sensitive adhesive layer on the opposite side of the base material. It is an information label affixing system characterized in that the adhesive is exposed.

In this information label affixing system, it is rational to use wind power as a reaction (reaction force) to the action of affixing the information label, and it is characterized in that it is provided with a blowing means as the reaction force generating means. .. In this case, the wind force discharged from the blower means forms a region in which the bag is substantially convexly deformed toward the outside of the container in the window portion provided on the side wall portion of the container, and the information label affixing means is used. The adhesive layer on the opposite side of the printing layer formed on the base material of the information label is pressed against the apex of the substantially convexly deformed region of the bag, and is separated from the outside of the bag and from the opening of the bag. An information label is attached to the position.

Therefore, the information label does not come off in the process of packing the bag, and the reading of the information label is not hindered. However, in this information label affixing system, since the reaction force relies on wind power, a large pressure is not generated between the label and the bag, so that the information label can be attached more reliably and the information label after the affixing can be used. A pressure-sensitive adhesive having an excellent curved surface and low-temperature adhesiveness is indispensable for preventing peeling.

In order to use the wind power discharged from the blower more efficiently and to attach the information label more reliably, this blower is located in the area of the opening of the bag, and the air outlet of the blower is installed. Is preferably provided toward the window portion of the container.

However, the wind power discharged from the blower leaks from the opening of the bag, which hinders the efficient use of the wind power. For the purpose of preventing this leakage, it is more preferable that the container is provided close to the opening of the container and provided with a reaction force maintaining mechanism for maintaining the reaction. This reaction force maintaining mechanism is particularly long as it is located near the opening of the container, is arranged so as to cover the area of the opening of the bag, and has an air blocking function of preventing air from leaking from the opening of the bag. Not limited.

Therefore, the member with the air blocking function may be specially made and installed in place, but it is on the opposite side of the air outlet of the blower and generates a reaction force having a size close to the area of the opening of the bag. It is rational to attach it as the bottom of the means.

Further, in order to realize more reliable labeling of the label, the information label affixing means is approximately applied to the side wall portion facing the region where the bag is deformed substantially convexly toward the outside of the container in the window portion by the reaction force generating means. It is characterized by being positioned in parallel and equipped with a moving device capable of bringing the pressure-sensitive adhesive layer of the information label into contact with the apex of the substantially convexly deformed region and further applying a pressure exceeding the reaction. In this way, the information label can be affixed by moving the information label affixing means, but the information label affixing means is substantially convex toward the outside of the container at the window portion in the vicinity of the window portion. It may be fixed at a position substantially parallel to the side wall portion facing the region deformed to be substantially convex, and may be brought into close contact with the adhesive of the information label from the apex portion of the bag deformed substantially convexly. In this case, the pressing of the bag by the wind power acts as an action, and the reaction, that is, the reaction force is expressed in the information label affixing means. In this case as well, the pressing of the bag by the wind power is regarded as the reaction force. Define.

As described above, regarding the information label affixing system of the present invention in which an information label is affixed to the outside of a bag in which an article is stored by using a penetrating window provided in at least a part of the side wall of the container, a reaction force generating means is used. The preferred solution in the case of wind power has been described. However, the reaction force generating means is not limited to wind power, and may be a physical holding plate inserted inside the bag or an adhesive force between the container and the bag due to static electricity.

The presser plate has a structure capable of at least maintaining a reaction force that can withstand the pressing force of the information label affixing means, and its shape is a plate having parallel surfaces along the window portion provided on the side wall portion of the container. As long as it is in the form, it is not particularly limited. Further, having a protrusion having a shape similar to that of the window, which can be fitted into the window, can remove wrinkles in the bag and realize reliable adhesion of the information label. Further, as the material of the presser plate, it is more preferable that the information label attaching means is an elastic body such as rubber that can be deformed by pressing pressure in order to improve the adhesiveness between the information label and the bag. However, when the window portion is provided on the bottom surface portion of the container, it is difficult to use the holding plate because the articles are stored.

The adhesive force between the container and the bag due to static electricity is not particularly limited as long as it is a charging means capable of generating an adhesive force due to static electricity between the bag and the container. For example, an ion irradiation type corona charging device or the like can be installed and used. Charging is not limited as long as it is before the information label is attached to the bag, but it is preferably performed before the bag to be attached is inserted into the container. In this case, as in the case of using wind power as a reaction force, it is possible to attach an information label via a window formed on the bottom surface of the container.

In the case of the information label affixing system of the present invention in which the information label is attached to the outside of the bag in which the article is stored by using the penetrating window provided in at least a part of the side wall of the container, the window is attached. The opening of the provided container can be covered and used as a through box as it is, but when a through box with a heat insulating effect for delivering fresh foods, frozen foods, etc. is used, the low temperature state in the delivery process is more stable. It is preferable to cover the container with a heat insulating material similar to that of the container, insert such a heat insulating material into the window portion, or seal the window portion. Alternatively, after attaching the information label, it may be transferred to a through box that does not have a window having a heat insulating effect.

It should be noted that the information label is affixed to the bag that can store such an article not only when the article is stored in the bag (after the article is stored in the bag), but also when the article is stored in the bag. It is also done when there is no item (before storing the item in the bag).

On the other hand, in the information label affixing system of the present invention, it is essential to use an information label using a pressure-sensitive adhesive having excellent adhesiveness on a curved surface and low temperature, particularly in a low temperature environment. As described above, the information label of the present invention comprises at least an opaque substrate, a printed layer formed on one side of the substrate, and an adhesive layer formed on the opposite side of the printed layer with respect to the substrate. It is characterized in that a curved surface and a pressure-sensitive adhesive having excellent low-temperature adhesiveness are exposed on at least a part of the surface opposite to the base material of the pressure-sensitive adhesive layer. In particular, the glass transition temperature of this pressure-sensitive adhesive is preferably −150 ° C. to −40 ° C. It is more preferably −130 ° C. to −50 ° C., and even more preferably −130 ° C. to −60 ° C. Since the adhesive having excellent curved surface and low-temperature adhesiveness mainly depends on Tg, it is not limited to the material, and mainly contains rubber-based resin, acrylic-based resin, urethane-based resin, and silicon-based resin. Any adhesive can be used. Further, the form of the resin that forms the pressure-sensitive adhesive layer on the label base material for producing the pressure-sensitive adhesive label is not limited to solvent-based, emulsion-based, solvent-free, and other solvents, and is not limited to one-component type and two-component type. It is not limited to the curing reaction type such as liquid type and photocuring type.

However, the lower the glass transition temperature, the better the curved surface and the low temperature adhesiveness, but the higher the glass transition temperature, the lower the holding power. In order to solve this problem, the pressure-sensitive adhesive of the present invention is preferably crosslinked. Further, the component of the pressure-sensitive adhesive of the present invention is an acrylic resin or a silicon-based resin from the viewpoints of adhesiveness to a polyolefin film, which is a component of a plastic bag, water resistance, control of glass transition temperature, and the like. Is preferable, and the label can be prevented from peeling off from the surface of the bag where dew is formed. Further, in a low temperature environment, adhesion to a plastic bag in a wet state due to dew condensation is also required, so that it is more preferable that porous inorganic or organic particles for absorbing water are contained.

Further, the base material constituting the information label is preferably synthetic paper. Synthetic paper has the characteristics of plastic film made from synthetic resin and paper made from wood pulp. Although it has excellent water resistance, it has water absorption, so it is a bag that condenses dew. It is suitable for preventing the label from peeling off from the surface, and also has the feature that the printed information is easy to read because it has the whiteness of paper. Suitable as a material. The synthetic paper is not particularly limited, and any of film method synthetic paper, fiber method synthetic paper, and film laminating method synthetic paper can be used, but water absorption, water resistance, printability, and whiteness. From the viewpoint of the above, the synthetic paper by the film method is preferable, and the synthetic paper having fine pores produced by the internal paper formation method is more preferable.

According to the present invention, when an article stored in a thin plastic bag is stored in a plastic container, a cardboard box, or the like for delivery, the plastic bag contains information necessary for delivery destination, management, etc. related to the stored article. Easy-to-read information labels can be automatically and reliably attached even in low-temperature environments, and it is possible to prevent the labels from peeling off due to dew condensation on the surface of the plastic bag during the packing process of tightening the plastic bag and during the delivery process. can. Therefore, by applying the information label affixing system of the present invention to the distribution system, the ordered goods can be reliably delivered to the client at low cost. In particular, the technology of attaching a label to a thin film that has expanded three-dimensionally can be utilized in all industries regardless of the distribution system.

It is a schematic diagram which shows the process of inserting a plastic bag into a container, putting an article in a plastic bag, attaching a label, and packing a plastic bag, in which the information label affixing system of the present invention is used. It is a schematic diagram which shows the state which completed the label sticking to the plastic bag which was inserted into a container and held while blowing wind power from the blower which concerns on one Embodiment of this invention. Schematic diagram showing a state in which a plastic bag is charged with a corona charging gun according to an embodiment of the present invention, wind power is blown from a blower, the plastic bag is inserted into a container, and labeling is completed on the held plastic bag. Is. It is a schematic diagram which shows the cross section of the information label which comprises at least the base material, the printing layer, and the pressure-sensitive adhesive layer which concerns on one Embodiment of this invention. It is a schematic diagram which shows the structure of the container provided with the window part through the side wall part which concerns on one Embodiment of this invention. The air sent into the inside of the plastic bag according to the embodiment of the present invention deforms the plastic bag substantially convexly outward from the window provided on the side wall of the container, and the wind force applied to the plastic bag is generated. It is a conceptual diagram which shows the system which a stamper presses and affixes a label as a reaction force. FIG. 3 is a schematic cross-sectional view of a window portion and a plastic bag provided on a side wall portion of a container before air is sent into the inside of the plastic bag according to an embodiment of the present invention. A cross-sectional view showing a step of deforming a plastic bag substantially convexly outward from a window provided on a side wall of a container by wind power of air sent into the inside of the plastic bag according to an embodiment of the present invention. It is a schematic diagram. FIG. 3 is a schematic cross-sectional view showing a step of contacting a plastic bag in which the pressure-sensitive adhesive layer of a label is substantially convexly deformed to the outside of a container by a stamper according to an embodiment of the present invention. By the stamper according to the embodiment of the present invention, the adhesive layer of the label is brought into contact with the plastic bag deformed substantially convexly on the outside of the container, and then further pressed more than the reaction force of the plastic bag generated by the wind force. , Is a schematic cross-sectional view showing the process of adhering a label to a plastic bag. It is a schematic diagram which shows the expansion of the contact area of the pressure-sensitive adhesive layer of the label from FIG. 5C to FIG. 5D which concerns on one Embodiment of this invention. FIG. 3 is a schematic cross-sectional view showing an air blocking portion that prevents air from leaking from a plastic bag, which is installed so as to cover an area of an opening of a plastic bag according to an embodiment of the present invention. FIG. 3 is a schematic cross-sectional view showing that the bottom surface portion of the blower device according to the embodiment of the present invention serves as an air blocking portion that prevents air from leaking from the plastic bag. An air outlet of a blower according to an embodiment of the present invention is provided toward a window provided in a container, and air supplied to the inside of a plastic bag is concentrated in the window. It is a schematic diagram which shows the flow. In the case where the air outlet of the blower according to the embodiment of the present invention is provided toward the window provided in the container and the flow of air sent into the inside of the plastic bag is concentrated on the window. , Is a schematic view showing a cross section of a substantially convex plastic bag deformed outward from a window portion and an air flow in the plastic bag. With respect to the fixed stamper holding the label according to the embodiment of the present invention, the plastic bag is substantially convex outward from the window provided on the side wall of the container by the air sent into the inside of the plastic bag. It is a conceptual diagram which shows the system which is deformed and pressed, and the label is attached by the wind force applied to a plastic bag as a reaction force. It is a conceptual diagram which shows the information label sticking system which adopted the presser plate as the reaction force required for the plastic bag for sticking a label which is one Embodiment of this invention. An embodiment of the present invention shows a system for affixing a label using a presser plate having a protrusion having a shape similar to that of a window on a side wall as a reaction force required for a plastic bag for affixing a label. It is a conceptual diagram. A conceptual diagram showing an information label affixing system using the adhesive force between a container and a plastic bag charged by a corona charging gun as a reaction force required for a plastic bag for affixing a label, which is an embodiment of the present invention. Is.

Hereinafter, the present invention will be described in more detail using one embodiment shown in the drawings, but the present invention is not limited thereto, and various modifications are made without departing from the gist of the present invention. It is possible to carry out and is limited only by the technical ideas described in the claims.

FIG. 1 shows, for example, a part of the final process in which personal delivery goods are sorted to delivery destinations in a distribution center or the like, that is, insertion of a plastic bag into a container, putting goods into a plastic bag, labeling, and labeling. It shows the process of packing plastic bags. In the process of transporting the container 2 used as a passing box on the conveyor 3, the plastic bag 1 is inserted into the container 2, the predetermined article 4 is put into the plastic bag 1 in the container 2, collected, and then delivered. A label 5 printed with information such as the contents, quantity, address and name of the delivery destination related to the article 4 that needs to be confirmed earlier is attached, and the mouth of the plastic bag 1 is closed to keep the article in a hygienic state. And packing is completed.

FIG. 2A shows a schematic diagram in which the information label 5 has been attached to the plastic bag 1 using the information label affixing system according to the embodiment of the present invention in such a step. The area around the opening of the plastic bag 1 is folded back above the container 2, and the air flow 72 from the blower 7 is sent toward the plastic bag 1 of the folded side wall portion 21, and the plastic bag 1 is blown by the wind force. After smoothing out the wrinkles of the information label 5, the plastic bag 1 of the information label 5 is composed of at least a base material, a printing layer formed on one side of the base material, and an adhesive layer formed on the opposite side by the stamper 6. Pasting to the inside is completed.

FIG. 2B is a schematic view showing that the information label 5 has been attached to the plastic bag 1 by using a corona charging gun in addition to the blower in the information label affixing system according to the embodiment of the present invention. At the same time as the plastic bag 1 and the container 2 due to the ions emitted from the corona charging gun adhere to each other, the wrinkles of the plastic bag 1 are smoothed by the wind force of the air flow 72 from the blower 7, and then at least by the stamper 6. The attachment of the information label 5 composed of the base material, the printing layer formed on one side of the base material, and the pressure-sensitive adhesive layer formed on the opposite side thereof to the plastic bag 1 is completed. Wrinkles are smoothed better than wind alone, the bonding area between the information label 5 and the plastic bag 1 is expanded, and more reliable adhesion of the information label 5 to the plastic bag 1 is realized.

Further, as shown in FIG. 2C, the information label 5 used here is composed of at least a base material 51, an adhesive layer 52, and a printing layer 53. As one embodiment, biaxially stretched film-based synthetic paper having fine pores produced by an internal paper forming method is used for the base material 51, and Tg is −150 ° C. to the pressure-sensitive adhesive layer 52. A pressure-sensitive adhesive containing a urethane-based resin, an acrylic-based resin, and a silicon-based resin at −40 ° C. as main components was used. Specifically, as a biaxially stretched film method synthetic paper, YUPOTAC (registered trademark) SGP80 manufactured by YUPO Corporation is used, and as a urethane resin adhesive, a two-component curable type Sanyo Kasei Kogyo Co., Ltd. is used. Polysic 410-SA manufactured by Polysic 410-SA, emulsion type AT-955 manufactured by Saiden Chemical Co., Ltd. as an acrylic resin pressure-sensitive adhesive, and peroxide curing type manufactured by Shin-Etsu Chemical Industry Co., Ltd. as a silicon-based resin pressure-sensitive adhesive. KR-100 was used. Then, the pressure-sensitive adhesive layer 52 was formed on the base material 51 using the above three types of pressure-sensitive adhesives, and the pressure-sensitive adhesive layer 52 was covered with a release paper and wound up to obtain an pressure-sensitive adhesive label tape.

Each of these three types of adhesive label tape is attached to a labeler, and information is printed on the surface of the base material 51 on the opposite side of the adhesive layer 52 by a thermal transfer method to form a print layer 53, and then the release paper is automatically applied. The label 5 is automatically supplied between the plastic bag 1 and the stamper 6, and the information label 5 shown in FIGS. 2A and 2B is attached to the plastic bag 2.

In the following embodiments, all of the above three types of adhesive label tapes were used and attached to a plastic bag as described above.

In this way, the periphery of the opening of the plastic bag 1 is folded back above the container 2, and the three types of information labels 5 attached to the plastic bag 1 of the folded side wall portion 21 are wind and / or charged. Due to the combined effect of the adhesive having excellent curved surface and low temperature adhesiveness, the plastic bag 1 manufactured from polyolefin showed good adhesiveness and did not come off in the subsequent packing process. Further, by using synthetic paper having excellent water absorption as the base material 51, even when the article 4 is a frozen food, the information label 5 does not come off not only in the packaging process but also in the delivery process of maintaining a low temperature state. rice field. In addition, the black characters printed on the white synthetic paper could be read very easily.

However, as shown in FIGS. 1, 2A, and 2B, the periphery of the opening of the plastic bag 1 is folded back above the container 2, and the folded side wall portion 21 is attached to the inside of the plastic bag 1. When the attached information label 5 is packed by tightening the mouth of the plastic bag 1, depending on the tightening method, the printed characters 52 may be reversed, the information label 5 may be read through the plastic bag 1, and the information label 5 may be read. There is a risk of folding and the like, and in any case, it may be difficult to read the information label 5.

Therefore, the present invention further provides a method of attaching the information label 5 to the surface of the plastic bag 1 away from the portion where the mouth is closed. The problem here is the production of a new reaction force that replaces the side wall portion 21 in which the periphery of the opening of the plastic bag 1 is folded back above the container 2. At a place away from the mouth of the plastic bag 1, there is only an article 4 that acts as a reaction force such as an underlay, and the label 5 cannot be strongly pressed so as not to damage the article 4. Further, since the shape of the article 4 is not necessarily plate-shaped, the label 5 cannot be attached in an easy-to-see manner so as not to cause wrinkles.

Therefore, we focused on the fact that labels can be easily attached to balloons that have expanded three-dimensionally, and created a method that can apply this principle to distribution systems. FIG. 3 is a schematic diagram showing the structure of the container 2 used in the information label affixing system according to the embodiment of the present invention. The container 2 includes four side wall portions 21, an upper surface opening 22, a window portion 23 through which an information label 5 provided on at least one of the four side wall portions can pass, and a bottom surface portion 24. Not limited to. A window portion may be provided on the bottom surface portion 24.

Then, FIG. 4 shows a conceptual diagram of a system for attaching the information label 5 to the plastic bag 1 using the container 2 according to the embodiment of the present invention. That is, due to the flow 72 of the air discharged downward from the air discharge port 71 of the blower device 7 installed in the upper part of the container 2, the window portion 23 provided on the side wall portion 21 of the container 2 is substantially convex outward. This is a system in which the wind force applied to the deformed plastic bag 1 is used as a reaction force of the action of pressing and attaching the information label 5, and the information label 5 is attached by the stamper 6.

In this system, the process of attaching the information label 5 to the plastic bag 1 inflated by the air flow 72 via the window portion 23 provided on the side wall portion 21 of the container 2 will be described in detail.

First, before the air is sent into the inside of the plastic bag 1, the plastic bag 1 with respect to the window portion 23 provided on the side wall portion 21 of the container 2 is in the state as shown in FIG. 5A.

When the air flow 72 discharged from the air discharge port 71 of the blower device 7 is sent into the plastic bag 1, as shown in FIG. 5B, in the window portion 23 provided on the side wall portion 21 of the container 2. The plastic bag 1 is deformed substantially convexly outward, and the tip of the plastic bag 1 expands to the position _{of D 1 while the reaction force P due to the wind force based on the air flow 72 is generated.}

In the vicinity of the window portion 23 provided on the side wall portion 21 of the container 2, a stamper 6 for attaching the information label 5 is installed so as to operate perpendicular to the side wall portion 21, and the stamper 6 is installed. The information label 5 on which the adhesive layer 52 and the printing layer 53 are formed is inserted into the base material 51 so as to be located between the tip and the substantially convex tip of the plastic bag 1. Then, as shown in FIG. 5C, and the stamper 6 is moved by the pressing F in the direction of the plastic bag 1, adhesive layer 52 of the label 5, in substantially the position of the convex tip D ₂ plastic bags 1, poly Contact with bag 1. This D ₂ is the optimum position for adhering the information label 5 to the plastic bag 1.

After such contact, as shown in FIG. 5D, the label 5 adheres to the plastic bag 1 by the pressing F of the stamper 6 having a reaction force P or more applied to the plastic bag 1 generated by the wind power.

In this series of labeling processes, in FIG. 5E, the contact region A between the adhesive layer 52 of the label 5 and the plastic bag 1 in the region of the window portion 23 gradually _{changes from A 1} to A ₂ and from A ₂ to A _3. It is shown as expanding.

Here, in order for the label 5 to be attached to the plastic bag 1 via the window portion 23 provided on the side wall portion 21 of the container 2, the window portion 23 needs at least an area through which the label 5 can pass. At the same time, the side wall portion 2 requires at least the minimum area required for the plastic bag 1 to be held by the air flow 72 discharged from the blower 7. Further, the pressing F of the stamper 6 must be larger than the reaction force P applied to the plastic bag 1.

However, when the label 5 is automatically attached to the plastic bag 1 only by the physical action as described above, the label 5 may not be reliably adhered to the plastic bag 1 because the reaction force P is insufficient. .. On the other hand, when the ordered article 4 is a fresh food such as milk, tofu, meat, vegetables, or a frozen food, the plastic bag 1 may also be cooled or moistened, and the label 5 may not adhere to the plastic bag 1. Further, in this case, even if the label 5 is once attached to the plastic bag 1, the label 5 may be peeled off due to dew condensation or the like in the delivery process of maintaining the low temperature state.

Therefore, as the information label 5 of the present invention, again, as one embodiment, the above-mentioned three types of adhesive label tapes are used. As a result, there was no adhesive defect in attaching the information label 5 to the plastic bag 1 containing the normal article 4, and there was no adhesive defect in the test with the plastic bag containing a plurality of frozen foods as the article 4. Label 5 did not come off. In addition, the information label 5 was not peeled off even in the delivery process for a few hours after the information label 5 was attached.

As described above, in the information label affixing system of the present invention, the reaction force P loaded on the plastic bag 1 is generated by the air flow 72 discharged from the blower 7, and the label 5 is automatically placed on the plastic bag 1. It is characterized in that the base material 51 of the label to be attached and to be attached is synthetic paper, and the Tg of the adhesive of the adhesive layer 52 is −150 ° C to −40 ° C. We have devised a system to improve and load the label 5 stably and evenly and to attach the label 5 to the plastic bag 1 more reliably. This system is shown in FIG. 6 as another embodiment of the present invention. Hereinafter, as the information label 5, the above-mentioned three types of adhesive label tapes were used in each case.

The information label affixing system of FIG. 6 is characterized in that the area of the opening of the plastic bag 1 is covered with an air blocking portion 73 provided around the air discharging port 71 of the blower device 7. The reaction force generated by the air flow 72 of the plastic bag 1 is prevented from leaking from the plastic bag 1 by the air blocking portion 73, which is discharged from the blower 7 and expands the plastic bag 1. As P is improved, it is stabilized and made uniform, and the information label 5 is more reliably attached to the plastic bag 1 which is substantially convexly deformed outward from the window portion 23 of the container 2 as shown in FIGS. 5A to 5D. You will be able to do it. As shown in FIG. 7, the effect of the air blocking portion 73 can be ensured by enlarging the bottom surface portion 74 of the blower device 7.

The effects of improving, stabilizing, and homogenizing the reaction force P generated in the plastic bag 1 obtained by preventing such air leakage can also be ensured by changing the air flow 72. FIG. 8A shows the air when the air discharge port 71 of the air blower 7 is provided toward the window portion 23 provided in the container 2, and the air sent into the inside of the plastic bag 1 is concentrated on the window portion 23. It is a schematic diagram which shows the flow 72 of. Since the air flow 72 is concentrated on the window portion 23 as shown by the broken line, the plastic bag 1 is substantially convex outward from the window portion 23 even if the amount of air discharged is small, as shown in FIG. 8B. It is easily deformed, and the tip of the plastic bag 1 can quickly reach the position of _{D 2 which is optimal for adhesion to the information label 5.}

The above information label affixing system is a method of affixing the information label 5 to the surface of the plastic bag 1 by moving the stamper 6. As shown in FIG. 9, the information label 5 is attached to the fixed stamper 6 holding the information label 5. On the other hand, the air sent into the inside of the plastic bag 1 deforms the plastic bag 1 substantially outward from the window portion 23 provided on the side wall portion 21 of the container 2 and presses it, and the wind force applied to the plastic bag 1 is applied. It is also possible to attach a label as a reaction force. In this case, a suitable gap G between the fixed stamper 6 and the container 2 surface is to correspond to the appropriate amount of protrusion D ₂ of plastic bags 1 from the container 2 of the window 23.

As described above, the reason why the air discharged from the blower 7 has been used as the reaction force P required for attaching the label 5 to the plastic bag 1 in the information label attaching system of the present invention is that the air feeding speed is high. This is because it is large and the speed at which the information label 5 is automatically attached can be increased. However, from the viewpoint of certainty that the information label 5 is attached to the plastic bag 1, it is necessary to obtain a larger reaction force P.

In response to this problem, FIG. 10 is a conceptual diagram showing an embodiment of the information label affixing system of the present invention in which a presser plate 8 is adopted as a reaction force P required for the plastic bag 1 for affixing the information label 5. be. The presser plate 8 is installed on the window portion 23 side provided on the side wall portion 21 of the container 2, is inserted from the inside of the upper opening of the plastic bag 1 (direction of arrow a), and moves to the window portion 23. Moves (in the direction of arrow c), and the information label 5 is attached. The presser plate 8 needs to have a width larger than the area of the window portion 23 and a length for being inserted into the plastic bag 1 from the direction of the arrow a and reaching below the region of the window portion 23. Further, when a force is applied in the direction of arrow b when the presser plate 8 reaches a predetermined position, a larger reaction force P can be generated. In FIG. 8, the presser plate 8 and the stamper 6 are drawn individually, but it is also possible to integrate them and generate forces in the arrow direction b and the arrow direction c at the same time.

When the presser plate 8 is used, in order to improve the condition (flattening) of the plastic bag 1 and realize stable attachment of the information label 5, as shown in FIG. 11, the container 2 of the presser plate 8 is used. It is preferable to provide the convex portion 81 at a position facing the window portion 23. The shape of the convex portion 81 is substantially the same as the shape of the window portion 23 of the container 2, preferably slightly smaller than the window portion 23 and having a larger dimension than the information label 5, and the tip shape of the convex portion 81 is particularly large. Although not limited, even a smooth flat surface is preferably a curved surface. The material of the presser plate 8 is also not particularly limited, but it is preferable to use an elastic material such as rubber for the convex portion 81 in order to securely attach the information label 5 to the plastic bag 1.

However, when the presser plate 8 is used, it is difficult to use the window portion 23 provided on the bottom surface portion 24 of the container 2 because the article 4 is stored in the plastic bag 1.

Further, FIG. 12 is a conceptual diagram showing an information label affixing system utilizing the adhesive force between the container 2 and the plastic bag 1 due to static electricity as the reaction force P required for the plastic bag 1 for affixing the information label 5. .. For example, the ions released by the corona charging gun 9 to cause corona discharge, the container 2 and the plastic bag 1 is charged, plastic bag 1 is adhered to the periphery of the window portion 23 provided in the container 2. This adhesive force can be used as the reaction force P required for the plastic bag 1 for attaching the information label 5. It is also possible to return to the normal state by discharging the information label 5 with the static elimination bar or the like at the same time when the stamper 6 finishes attaching the information label 5. Similar to the method using air as a reaction force, this method is also superior in operability to the case of using a presser plate, and is suitable for an automatic sticking system.

When the adhesive force due to static electricity is used as a reaction force, the information label 5 can be attached to the plastic bag 1 via the window portion 23 provided on the bottom surface portion 24 of the container 2 as in the case of wind power.

In the embodiment of the present invention, a method of utilizing air, a holding plate, and static electricity as the reaction force P required for the plastic bag 1 for attaching the information label 5 is described, but in any case. If the ordered article 4 is a fresh food such as milk, tofu, meat, vegetables, or a frozen food, the plastic bag 1 may also be cooled and moistened, and the information label 5 adheres to the plastic bag 1. It is not possible to solve the problem that it is difficult, and the problem that the label 5 once attached to the plastic bag 1 is peeled off due to dew condensation or the like in the delivery process of maintaining a low temperature state. Therefore, in the information label affixing system of the present invention, as described above, it is indispensable to use an appropriate material as the base material 51 and the pressure-sensitive adhesive layer 52 constituting the information label 5.

In fact, in any of the above embodiments, there is no adhesive defect in attaching the information label 5 to the plastic bag 1 containing the normal article 4, and the test is performed on the plastic bag containing a plurality of frozen foods as the article 4. However, there was no poor adhesion and the information label 5 was not peeled off. In addition, the information label 5 was not peeled off even in the delivery process for a few hours after the information label 5 was attached.

In the above embodiment, the case where the information label is attached to the bag in which the article is stored (after the article is stored in the bag) has been described, but the bag in which the article is not stored (the article is stored in the bag) has been described. It is also applicable when an information label is attached before (before). Furthermore, the above embodiment is merely an example of realizing the technical idea of the present invention, and is not limited thereto. Various changes are permitted within the scope of the present invention, that is, enlargement, reduction, substitution, selection, removal, etc., and the present invention is made only by the technical idea described in the claims. It is limited.

The present invention describes an automatic label affixing method when there is no reaction force for affixing a label to an adherend such as a thin plastic bag, and describes a method of using the label in a distribution system. It is implemented in all industries such as food, electric / electronics, automobiles, information, and services, and has the potential to be used for labeling in all industries.

1 Plastic bag 2 Container 21 Side wall 22 Opening 23 Window 24 Bottom 3 Conveyor 4 Article 5 Information label 51 Base material 52 Adhesive layer 53 Printing layer 6 Stamper 7 Blower 71 Air outlet 72 Air flow 73 Air shutoff Part 74 Bottom part (air blocking part)
8 Presser plate 81 Convex part 9 Corona charging gun 91 Ion A contact area (A ₁ , A ₂ , A ₃ )
D The amount of protrusion of the plastic bag from the container window (D ₁ , D ₂ )
Appropriate distance between G stamper and container surface F Stamper pressing (action)
P Reaction force (reaction) due to wind power
a, b Movement of the presser plate c Movement of the stamper

Claims (13)

A container in which a bag capable of storing items that may contain frozen foods can be inserted and held, and a container that can be held.
An information label affixing means that automatically affixes an information label displaying information related to delivery of goods to at least a part of the inside of the bag inserted and held in the container.
In an information label affixing system provided with a blower means for blowing air into the side wall of the container, which is installed on the side of the information label affixing means.
The information label is an opaque substrate, a printed layer formed on one side of the substrate, and an adhesive layer formed on the opposite side of the printed layer with respect to the substrate, and the glass transition temperature. A two-component curable urethane-based resin pressure-sensitive adhesive and a pressure-sensitive adhesive layer formed by using a peroxide-curable silicon-based resin pressure-sensitive adhesive having a Tg of −150 ° C. to −40 ° C. are provided at least. A curved surface and a pressure-sensitive adhesive having excellent low-temperature adhesiveness are exposed on at least a part of the surface of the pressure-sensitive adhesive layer, and the low-temperature adhesiveness allows the article to adhere even in a cooled and wet state when the article is a frozen food. An information label affixing system that is characterized by demonstrating its sexuality. In the information label affixing system according to claim 1,
An information label affixing system further comprising a charging means for generating an adhesive force between the container and the bag due to static electricity. A bag capable of storing articles can be inserted and held, and has a side wall portion, an opening portion, and a bottom surface portion, and a window portion penetrating at least a part of the side wall portion or the bottom surface portion is provided. With a container
An information label affixing means for affixing an information label displaying information related to delivery of goods to at least a part of the outside of the bag inserted and held in the container.
A reaction force generating means that generates a reaction through the window portion with respect to the action of attaching the information label by the information label attaching means.
In the information label affixing system equipped with
The information label comprises at least an opaque substrate, a printed layer formed on one side of the substrate, and an adhesive layer formed on the opposite side of the printed layer with respect to the substrate. An information label affixing system characterized in that a curved surface and a pressure-sensitive adhesive having excellent low-temperature adhesiveness are exposed on at least a part of the surface opposite to the base material of the pressure-sensitive adhesive layer. In the information label affixing system according to claim 3,
The information label affixing system is characterized in that the reaction force generating means includes a blowing means for generating a wind force that becomes the reaction. In the information label affixing system according to claim 4,
The information label affixing system, wherein the blower means is in the area of the opening of the bag, and the air discharge port of the blower means is provided toward the window portion of the container. In the information label affixing system according to claim 4 or 5.
An information label affixing system that is close to the opening of the container, is arranged so as to cover the area of the opening of the bag, and further includes an air blocking portion that prevents the leakage of wind power. In the information label affixing system according to claim 6,
An information label is attached, wherein the air blocking portion is on the opposite side of the air exhaust port of the blowing means and is a bottom surface portion of the reaction force generating means having a size close to the area of the opening of the bag. system. In the information label affixing system according to any one of claims 3 to 7.
The information label affixing means is located substantially parallel to the side wall portion of the bag facing a region in which the bag is deformed substantially convexly toward the outside of the container by the reaction force generating means, and the information is provided. An information label affixing system comprising a moving device capable of bringing the pressure-sensitive adhesive layer of a label into contact with the apex portion of the substantially convexally deformed region and further applying a pressure exceeding the reaction. A container into which a bag capable of storing articles can be inserted and held has a side wall portion, an opening portion, and a bottom surface portion, and a window portion penetrating at least a part of the side wall portion is provided. With the container
An information label affixing means for affixing an information label displaying information related to delivery of goods to at least a part of the outside of the bag inserted and held in the container.
A reaction force generating means that generates a reaction through the window portion with respect to the action of attaching the information label by the information label attaching means.
In the information label affixing system equipped with
The information label affixing system, wherein the reaction force generating means is a physical presser plate inserted inside the bag. In the information label affixing system according to claim 3,
The information label affixing system, wherein the reaction force generating means is a charging means for generating an adhesive force between the bag and the container due to static electricity. In the information labeling system according to any one of claims 3 to 10, the information characterized in that the glass transition temperature of the adhesive having excellent curved surface and low temperature adhesiveness is −150 ° C. to −40 ° C. Labeling system. In the information label affixing system according to claim 11,
An information label affixing system characterized in that the main component of the pressure-sensitive adhesive having excellent curved surface and low-temperature adhesiveness is an acrylic resin or a silicon-based resin. The information label affixing system according to any one of claims 1 to 12, wherein the base material constituting the information label is synthetic paper.

Images