Tags for managing raw materials and raw material management system

Abstract

To provide base paper management tags that can be easily made and easily attached to and removed from rolled base paper, and that enable accurate inventory control, and a base paper management system equipped with such tags.SOLUTION: A base paper management system 1 of the invention which is used for manufacturing corrugated cardboard sheets 4 by a corrugator, comprises: a base paper management tag that manages rolled base paper 2 wound around a winding core and equipped with a RF tag; a residual paper length measuring instrument 17 that measures the residual paper length of the rolled base paper 2; an antenna 18 that performs wireless communication with the RF tag; a reader 19 that reads information from the RF tag via the antenna 18; and an information processing terminal that processes the information read by the reader 19, wherein the base paper management tag is a plate-like elastic body whose length in at least one direction is greater than the inner diameter of the winding core.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a tag for managing base paper used in the manufacturing process of cardboard and a base paper management system.

Background Art

[0002] As the most common packaging material, cardboard is widely used. Cardboard boxes (cases) are, in principle, made to order according to customer-specified specifications. The manufacturing process of cardboard boxes consists of a manufacturing process for producing cardboard sheets and a box-making process for printing, die-cutting, and box-making. The first process, the manufacturing process, is a process of producing cardboard sheets from base paper for cardboard (hereinafter also referred to as "base paper") using a corrugator. In order to manufacture various types of cardboard according to the application, there are a very large number of types of base paper with different materials, thicknesses, paper widths, colors, etc. Usually, these many types of base paper are stored in a base paper warehouse when not in use and are moved from the warehouse to the production site and used when producing cardboard sheets. The base paper moved from the warehouse to the production site is used in a predetermined amount, and the base paper in use is moved back to the base paper warehouse and stored again. Therefore, the base paper is not only of many types as described above, but also among the same type (grade), there are multiple base papers with different lots, lengths, and usage histories, making management very complicated and burdensome.

[0003] Generally, long articles such as cardboard base paper, sheets, and films are often handled in a roll state wound around a core. As an object and a management method for reducing the management burden of roll-shaped articles, for example, the following management tags and inventory management methods have been proposed.

[0004] Patent Document 1 discloses a management tag for the end of a roll paper tube, which consists of a circular bottom, a cylindrical side wall portion rising from the periphery thereof, a flange portion protruding outward from the opening-side edge of the side wall portion, and an information entry tag. By using this management tag, the management tag can be detachably and firmly fitted so as to close the opening end of the roll paper tube, and it is disclosed that various information regarding the roll can be accurately grasped from the end side of the roll where it is easy to view.

[0005] Patent Document 2 discloses an inventory management method for raw material rolls in which a barcode containing data relating to a unique roll number, the product number of each raw material, and the weight of the raw material is attached to a label attached to each raw material roll. When raw material rolls are received into storage, the data from the barcode on the label attached to each raw material roll is read, and each raw material roll is managed based on the read data and the delivery date. It is disclosed that by using this inventory management method, the data entry work when raw material rolls are received into storage becomes easier, and inventory management can be performed for each raw material roll. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Utility Model Registration No. 3151898 Gazette [Patent Document 2] Japanese Patent Application Publication No. 11-139515 [Overview of the project] [Problems that the invention aims to solve]

[0007] Corrugated cardboard base paper is several thousand meters long, and the diameter of rolled corrugated cardboard base paper (hereinafter also referred to as "rolled base paper") is several tens to over a hundred centimeters. Therefore, when storing many rolls of base paper in a warehouse, they are sometimes stored stacked in multiple layers with the rotation axis of the core facing vertically (vertically). In such cases, with the management tags described in Patent Document 1, it is not possible to visually inspect the rolls of base paper from the end side because they are obscured by other rolls of base paper or the floor, making it difficult to grasp the inventory information of the base paper. In addition, because the shape of the management tags is complex, it is time-consuming to manufacture the tags, and because they are firmly fitted to the open end of the roll, there is room for improvement in terms of ease of attachment and detachment.

[0008] In the inventory management method described in Patent Document 2, information on the remaining length of the raw paper (remaining paper length) is not managed. Furthermore, since barcodes need to be read at close range, human operation is often required for reading. In addition, if barcodes are damaged or soiled, they may not be readable or may read incorrect information.

[0009] This invention has been made in view of the above problems, and aims to provide a paper management system that allows for easy creation of paper management tags and attachment / detachment to roll-shaped paper, and enables accurate inventory management. [Means for solving the problem]

[0010] The present invention relates to a base paper management system for managing roll-shaped base paper wound around a core, used in the manufacture of corrugated cardboard sheets by a corrugator. The base paper management system comprises a base paper management tag equipped with an RF tag, a remaining paper length measuring device for measuring the remaining paper length of the roll-shaped base paper, an antenna for wireless communication with the RF tag, a reader for reading information from the RF tag via the antenna, and an information processing terminal for processing the information read by the reader. The base paper management tag is characterized by being a plate-shaped elastic body whose length in at least one direction is greater than the inner diameter of the core.

[0011] In this specification, an RF tag refers to an information medium that uses electromagnetic waves to read and write data to its built-in memory in a contactless manner. Furthermore, an automatic identification system that performs reading and writing between an RF tag and a device (reader, writer, reader / writer) that reads and writes the information recorded on the RF tag via wireless communication is called RFID (Radio Frequency Identification).

[0012] The above-mentioned paper management tag is rectangular in shape, with the length of its shorter side being greater than the inner diameter of the core, and its longer side aligning with the long axis of the core, so that it is inserted into the core.

[0013] The above-mentioned paper management tag is characterized in that it does not make surface contact with the inner surface of the core, but is fixed by contact on at least two sides.

[0014] The above antenna is provided in multiple locations on the arm of the corrugator's mill roll stand, and the multiple antennas are arranged so that their respective reading ranges overlap.

[0015] The paper management tag of the present invention is a paper management tag used in a paper management system for managing roll-shaped paper wound around a core, which is used in the manufacture of corrugated cardboard sheets by a corrugator, and is characterized in that the paper management tag has an RF tag that can be wirelessly transmitted in the paper management system and is a plate-shaped elastic body whose length in at least one direction is greater than the inner diameter of the core. [Effects of the Invention]

[0016] The paper management system of the present invention comprises a paper management tag equipped with an RF tag, a remaining paper length measuring device for measuring the remaining paper length of a roll of paper, an antenna for wireless communication with the RF tag, a reader for reading information from the RF tag via the antenna, and an information processing terminal for processing the information read by the reader. Since the paper management tag is a plate-shaped elastic body whose length in at least one direction is greater than the inner diameter of the core, it is easy to manufacture the paper management tag and attach and detach it from the roll of paper. Furthermore, accurate inventory management is possible by using RFID capable of wireless communication for information management.

[0017] The paper management tag is rectangular in shape, with its shorter side longer than the inner diameter of the core, and its longer side aligned with the core's long axis. This design ensures that the tag remains stable inside the core and is less likely to fall off, even when the roll of paper moves between the warehouse and the corrugating area, or when it rotates while attached to a corrugator. Furthermore, the alignment of the tag's longer side with the core's long axis makes insertion easy, allowing on-site workers to easily handle the tag and detach it from the roll, thus reducing their workload.

[0018] The tag for base paper management does not have surface contact with the inner surface of the core, and is fixed by contacting and fixing at least two sides. Therefore, it is easy for on-site workers to grasp the tag for base paper management inside the core, and the attachment and detachment of the tag for base paper management become even easier.

[0019] A plurality of antennas are provided on the arm of the mill roll stand of the collator, and the plurality of antennas are arranged so that their respective reading ranges overlap. Therefore, the opportunity to read the signal emitted from the tag for base paper management increases, the plurality of antennas complement each other, the reading accuracy is improved, and the effect of preventing reading omission is improved. As a result, the inventory quantity can be grasped more accurately.

[0020] The tag for base paper management of the present invention has an RF tag capable of wireless communication in a base paper management system, and is a plate-shaped elastic body whose length in at least one direction is larger than the inner diameter of the core. Therefore, there is no need to mold the tag, and it can also be produced by a printing machine. The production of the tag for base paper management and its attachment and detachment to the roll-shaped base paper are easy. In addition, by using RFID capable of wireless communication for information management, accurate inventory management can be achieved.

Brief Description of the Drawings

[0021] [Figure 1] It is a schematic diagram of the base paper management system of the present invention. [Figure 2] It is a schematic diagram of the collator. [Figure 3] It is a side view of a roll-shaped base paper provided with the tag for base paper management of the present invention. [Figure 4] It is a plan view of the tag for base paper management and the label for base paper management.

Embodiments for Carrying Out the Invention

[0022] One embodiment of the base paper management system of the present invention will be described with reference to Figure 1. Figure 1 is a schematic diagram of the base paper management system. In Figure 1, the black arrows indicate the flow of base paper, and the thick black lines indicate the local area network (LAN) connecting the devices that constitute the system. As shown in Figure 1, the base paper management system 1 of the present invention is a system that manages inventory by attaching base paper management tags (not shown) equipped with RF tags to roll-shaped base paper 2 wound around a core, and is used in the manufacture of corrugated cardboard sheets by a corrugator.

[0023] In the paper management system 1, information processing terminals are located in the office where production management operations are performed, the paper storage area where the paper is stored, and the corrugator area where the paper is prepared. The information processing terminals in each location are connected to each other via LAN. In addition, multiple information processing terminals are located in the corrugator area, and all of them are also connected via LAN.

[0024] The office is equipped with several information processing terminals: a management terminal 12 for inputting various information necessary for production management to manage the production of corrugated cardboard sheets, a base paper management tag printer 13 for printing base paper management tags, and a server 14. In the base paper storage area, there is also an information processing terminal 15 for on-site use and a change notification terminal 16 that notifies the management terminal 12 of any changes to orders.

[0025] In the corrugator area, rolls of base paper 2 equipped with base paper management tags are provided in each area: A-flute liner (AL), A-flute core (AM), B-flute liner (BL), B-flute core (BM), and double facer (DF). Field terminals 15 are placed as information processing terminals in each of the AL, AM, BL, BM, and DF areas, the control room where the corrugator is operated, and the cutter tip where the cut-off corrugated cardboard sheets are stored.

[0026] Here, the corrugator will be explained using Figure 2. Figure 2 is a schematic diagram of the corrugator. As shown in Figure 2, the corrugator 3 is a machine with a total length of approximately 70 to 100 m in which various devices are arranged in a continuous manner to manufacture corrugated cardboard sheets 4 by laminating multiple roll-shaped base paper 2. The corrugator 3 has a mill roll stand 5 for loading the base paper and a splicer 6 for automatically joining the base paper in each of the AL, AM, BL, BM, and DF areas described above. The corrugator 3 has single facers 7 between AL and AM and between BL and BM, respectively, which form the core base paper into a corrugated shape, apply adhesive to the corrugation tops, and then laminate it with a liner to manufacture single-sided corrugated cardboard.

[0027] The corrugator 3 includes a glue machine 8 for applying adhesive to single-sided corrugated cardboard, and a double facer 9 for bonding the single-sided corrugated cardboard and liner to form double-sided corrugated cardboard. Furthermore, the corrugator 3 includes a slitter scorer 10 for cutting the corrugated cardboard bonded by the double facer 9 parallel to the direction of travel and forging lines, and a cutoff 11 that uses a rotating blade to cut the bonded corrugated cardboard to a predetermined length perpendicular to the direction of travel. The corrugated cardboard sheets 4 cut by the cutoff 11 are fed into the cutter tip and stacked.

[0028] The base paper management system will be explained again using Figure 1. In each of the AL, AM, BL, BM, and DF areas, in addition to the field terminal 15, there is a remaining paper length measuring device 17 for measuring the remaining paper length of the base paper being used, an antenna 18 for wireless communication with RF tags, a reader 19 for reading information from RF tags via the antenna, and a printing press 20 for printing labels displaying information about the roll of base paper 2 after use at the end of production. In the control room, in addition to the field terminal 15, there is a change notification terminal 16. Also, at the cutter end, in addition to the field terminal 15, there is a change notification terminal 16 and a sign printing press 21.

[0029] Each of the AL, AM, BL, BM, and DF areas may be equipped with a remaining paper length measuring device 17, an antenna 18, and a reader 19, respectively. The field terminal 15 and the printing press 20 may be located in the same place. From the viewpoint of workability, it is preferable that the field terminal 15 and the printing press 20 be located adjacent to the mill roll stand.

[0030] Since the base paper management tags are inserted inside the roll of base paper as described later, it is preferable to provide multiple antennas on the arm of the mill roll stand in order to reliably communicate wirelessly with the antennas and improve reading accuracy. It is preferable that the multiple antennas be positioned so that their respective reading ranges overlap. This increases the opportunities to read signals emitted from the base paper management tags, and the multiple antennas complement each other, improving reading accuracy.

[0031] When two antennas are provided for a single roll of base paper, for example, one antenna can be provided on each of the two arms that fix the roll of base paper, and the roll of base paper can be placed between the two antennas so that the reading ranges of the two antennas overlap. Alternatively, two antennas can be provided on a single arm, and their positions can be brought close together or their angles adjusted so that their respective reading ranges overlap. From the viewpoint of maximizing overlap of the reading ranges, it is preferable to provide one antenna on each of the two arms that fix the roll of base paper, and to place the roll of base paper between the two antennas.

[0032] The antenna is, for example, planar in shape. In this case, it is preferable that the antenna is positioned such that the surface of the antenna and the surface of the RF tag are at least temporarily parallel when the roll of base paper is rotating during the corrugation process. This allows for more stable wireless communication between the antenna and the RF tag, and enables more accurate identification of the base paper (each base paper has a unique management number assigned at the time of receiving).

[0033] As described above, the reader can be installed on the mill roll stand in each area. Since the antenna and the reader can be connected by a cable, the reader may be installed in a location other than the arm of the mill roll stand. Readers that support various frequencies can be used. For example, the reader can support frequencies such as the LF band (approximately 130 kHz), HF band (13.56 MHz), UHF band (approximately 900 MHz), and microwave (2.45 GHz). From the viewpoint of flexibility in the installation location of the antenna and the paper management tags, it is preferable that the reader supports the UHF band, which has a long communication range. The reader may also have a function to write information to the RF tag.

[0034] If it is not possible to install antennas or readers on the corrugator, field workers can use a handheld terminal to read RF tags instead. The handheld terminal can read information simply by holding it over the roll of base paper into which the base paper management tags are inserted.

[0035] The remaining paper length measuring device measures the length of the unwound paper (travel length) during the papermaking process and the length of one rotation of the roll of base paper. The remaining paper length is then calculated using the circumference of the roll of base paper (length of one rotation) derived from these values, the paper thickness, and the paper core diameter (outer diameter of the core). As the remaining paper length measuring device, for example, proximity sensors such as induction, capacitive, ultrasonic, photoelectric, and magnetic types, contact speedometers, and encoders can be used individually or in combination. Specifically, the remaining paper length can be derived by obtaining a signal indicating the travel length during papermaking using an encoder and a signal indicating one rotation of the roll of base paper using a proximity sensor. If the proximity sensor is a photoelectric type that detects light such as visible light or infrared light, it can be installed near the splicer or mill roll stand to irradiate the top and bottom surfaces of the unwound base paper or the sides of the roll with light, and the rotation can be detected from the changes in light due to reflection, transmission, or absorption. Furthermore, if the proximity sensor is a capacitive type, it can detect the proximity of various objects from changes in capacitance, has excellent environmental resistance, and is suitable for use in low-temperature and high-temperature environments.

[0036] Furthermore, as the remaining paper length measuring device, a distance measuring photoelectric sensor for measuring the distance between the sensor and the object, and a shape measuring photoelectric sensor for measuring the two-dimensional or three-dimensional shape of the object may be used. These photoelectric sensors can be selected from, for example, through-beam, retro-reflective, diffuse-reflective, narrow-field-of-view-reflective, limited-reflective, distance-setting, and gloss-discrimination-specific-reflective types, and may also incorporate a camera. As the light source for the photoelectric sensor, for example, an LED or laser light can be used. Information such as the remaining paper length measured by the remaining paper length measuring device is recorded on the server in association with the data recorded on the RF tag. This prevents discrepancies between the actual inventory quantity and the values ​​in the system, allowing for accurate tracking of inventory (number of rolls of raw paper by material and paper width, and each remaining paper length), and reducing raw paper waste.

[0037] The remaining paper length measuring instrument, antenna, and reader do not need to be placed on the corrugator's mill roll stand, but may be placed in a location between the corrugator and the base paper storage area. For example, if rolled base paper moves between the base paper storage area and the mill roll stand by a conveyor or other transport means, the remaining paper length measuring instrument may be placed above or to the side of the transport path. If the remaining paper length measuring instrument is, for example, the above-mentioned photoelectric sensor and is placed above the transport path, the diameter of the rolled base paper may be calculated from the height from the transport surface (top of the conveyor) and its thickness, and the remaining paper length may be calculated from the calculated diameter. In this case, the antenna may be placed above, to the side, or below (inside the conveyor) the transport path. Also, if multiple antennas are placed, each antenna may be placed above and below, or to the right and left, in positions that are front and back with respect to the direction of movement of the transport path. The reader can be connected to the antenna by a cable and placed near the antenna.

[0038] This allows for the determination of the remaining paper length as the rolled paper is transported by the conveyor after use. In particular, when the photoelectric sensor is placed above the transport path to calculate the remaining paper length, even more accurate measurement of the remaining paper length is possible than when the remaining paper length is calculated using an encoder and proximity sensor. When calculating the remaining paper length using an encoder and proximity sensor, the number of samples is small when the amount of paper roll used is small and the number of rotations of the paper is small, so it may be difficult to obtain an accurate remaining paper length, such as the calculated result being larger than the remaining paper length before use. In addition, operational errors can occur when the speed is not constant due to acceleration or deceleration or stopping midway, when the arm of the mill roll stand is moved up and down, when the encoder roller slips with water-repellent paper, when the paper thickness is too thin, when the brake is too loose causing over-rotation, or when only the paper rotates due to poor chucking. In contrast to this, when calculating the remaining paper length using a photoelectric sensor as described above, the accuracy is particularly superior, so the effort required for on-site workers to measure the remaining paper length can be reduced. As a result, if the remaining paper length is shorter than the predetermined length and the paper is unsuitable for the next use, it can be automatically disposed of without returning it to the paper storage area by placing it on the disposal route to the paper disposal area. Therefore, the above configuration reduces the burden of storing and managing inventory of paper that is unsuitable for the next use, and only usable paper is stored in the paper storage area, leading to efficient use of the storage area. In the case of non-automated (systematized) disposal, the general decision to dispose of used paper is made by on-site workers measuring the diameter of each used paper point by point with a scale (measuring tape) to confirm the dimensions.

[0039] Furthermore, if the antenna and reader are positioned between the corrugator and the raw paper storage area, the RF tag information of the raw paper being transported from the raw paper storage area to the mill roll stand can be read during the transport process and compared with the information of the raw paper to be used. This allows for checking for errors in the used raw paper at stages such as the transport process if the raw paper before use differs from the raw paper to be used, and an alert can be issued before production begins.

[0040] The paper management tag and paper management label will be explained using Figures 3 and 4. Figure 3 is a side view of a roll of paper equipped with a paper management tag. Figure 4 is a top view of the paper management tag and paper management label. As shown in Figure 3, the roll of paper 2 has paper 2b wound around a cylindrical core 2a, and its diameter before use is, for example, approximately 110 cm. The paper management tag 22 is placed on the entrance side inside the core 2a of the roll of paper 2. The paper management tag 22 is a plate-shaped elastic body whose length in at least one direction is greater than the inner diameter of the core 2a. As a result of the simple structure of the paper management tag 22, it is easy to manufacture the tag and attach and detach it from the roll of paper 2. Furthermore, by linking it with RF tags, remaining paper length measuring instruments, and information processing terminals, it becomes possible to accurately manage the inventory of the roll of paper in real time.

[0041] The material of the paper management tag can be freely selected from materials other than metal, from the standpoint of not interfering with wireless communication (excellent radio wave transparency). Examples of materials for the paper management tag include resin, glass fiber reinforced resin, and paper. An RF tag is embedded on the surface or inside a sheet material made of one of these materials.

[0042] As shown in Figure 4(a), the paper management tag 22 is a rectangular, plate-shaped elastic body. Both the short and long sides of this rectangle are larger than the inner diameter of the core. As described above, the paper management tag 22 has an RF tag (not shown) inside. The RF tag can record, for example, the paper management number, variety name, lot number, receiving date, length, manufacturer name, etc.

[0043] The paper management labels are printed, for example, immediately after the corrugation process using printing presses corresponding to the paper in each area (AL, AM, BL, BM, DF), and are affixed to the outer surface of the rolled paper. As shown in Figure 4(b), the paper management labels 23 can display information such as the paper management number, variety name, lot number, remaining paper length, paper width, and winding direction.

[0044] From the perspective of accurate inventory management (ensuring the tags are less likely to detach from the rolled paper and that information can be reliably obtained), it is preferable that the length of the short side of the paper management tag is greater than the inner diameter of the core, and that the long side aligns with the long axis of the core when inserted into the core. This prevents the paper management tag from moving around inside the core and falling off even when the rolled paper is moved between the warehouse and the corrugating area, or when it rotates while attached to a corrugator. Furthermore, since it is easy for on-site workers to understand that the long side of the paper management tag aligns with the long axis of the core, the tags are easier to handle, and attaching and detaching them from the rolled paper becomes easier, further reducing the workload.

[0045] It is preferable that the paper management tag is not in full surface contact with the inner surface of the core, but is fixed by contact on at least two sides. In this case, compared to the case where one side of the paper management tag is in full contact with the inner surface of the core, attaching and detaching the paper management tag becomes even easier. The paper management tag may be inserted into the core in a curved state and fixed by contact on two opposite sides, or it may be folded in the middle to form a mountain fold shape, and fixed by contact on a total of three sides: two opposite sides and the mountain fold edge. From the viewpoint of reducing the workload, it is preferable that the paper management tag is not folded and is fixed by contact on two opposite sides of the core. Furthermore, the shape of the paper management tag is not limited to a rectangle; it can be any shape. For example, it can be made by combining two rectangular plate-shaped elastic bodies so that their cross-section is cross-shaped. In this case, the paper management tag is fixed by contacting the core on all four sides.

[0046] An example of a method for managing rolled base paper using the base paper management system of the present invention will be described. When new rolled base paper is received, production managers and others input various information about the base paper (base paper management number, variety name, lot number, receipt date, length, manufacturer name, material, length, width, thickness, etc.) into a management terminal in the office. The input information is stored on a server in the office and can be viewed on information processing terminals installed in the office, base paper storage area, and corrugator area. Production managers and on-site workers create base paper management tags using a base paper management tag printing machine in the office. At this time, the base paper management tag printing machine prints information about the base paper onto a resin sheet and simultaneously writes various information onto an RF tag. The created base paper management tags are inserted into the core of the rolled base paper with the tags bent and then fixed in place.

[0047] The production manager creates a lamination schedule on a management terminal according to the order status. The lamination schedule includes information such as the production date, production quantity, and the type of base paper to be used. On-site workers move the rolls of base paper to be used in production from the base paper storage area to the designated location in the corrugator area and attach them to the arms of the mill roll stand according to the lamination schedule. At this time, the reader reads the information of the base paper management tag inserted into the roll of base paper via an antenna installed on the arm. The base paper information read by the reader is transmitted from the on-site terminal to the management terminal via LAN, and is compared with the base paper information recorded on the server to identify the attached roll of base paper.

[0048] When corrugated cardboard sheet production begins, the rolls of base paper rotate and unwind. The remaining paper length measuring device measures the unwinding speed of each sheet of base paper and calculates the length of the unwound paper and the current remaining paper length. The obtained speed and length information is transmitted to a management terminal, and the current remaining paper length of each sheet of base paper is updated in real time. The updated information can be used by management terminals and field terminals to determine which base paper is currently being used, by which machine, and how much of it has been used, from any location, whether it is the office, the base paper storage area, or the corrugator area.

[0049] When corrugated cardboard sheet production ends, the rotation of the roll of base paper stops, and the length information of the base paper at that point is transmitted to a management terminal, recording the remaining length of each sheet. If the base paper is spliced ​​(joined), a label with the management number, winding direction, product name, paper width, and remaining length is printed from the printing press immediately after production ends. This makes it less likely to misapply labels to rolls of base paper that have been partially used, and allows for quick confirmation of the base paper's condition. Furthermore, when the management terminal recognizes that the remaining length has become shorter than a predetermined length, it automatically initiates disposal. This prevents input errors regarding disposal and contributes to improved operational efficiency.

[0050] Furthermore, the application of printed labels to rolls of base paper may be performed by a robot. In this case, compared to when a human applies the labels, the chances of errors such as applying labels to the wrong rolls of base paper or applying labels to inappropriate locations on the edges of the rolls of base paper are reduced. Also, the disposal of rolls of base paper may be determined by a human based on the measurement results of a remaining paper length measuring device or the roll diameter (remaining paper length) measured by a field worker using a measuring tape. By using AI to perform image recognition on camera images of the discarded rolls of base paper, the number of discarded rolls of base paper can be determined, and the forklift operator can confirm the type of base paper on a large monitor display. The forklift operator can then determine the storage area to which the rolls of base paper should be transported by confirming the type of rolls of base paper that have been removed on the large monitor. This allows the forklift operator to determine the type of rolls of base paper without getting off the forklift, improving work efficiency.

[0051] The printer at the end of the cutter prints a sign displaying information about the cut-off corrugated cardboard sheet immediately after production ends. This makes it easier for on-site workers to recognize which sign to attach to which corrugated cardboard sheet, reducing the likelihood of attaching the wrong sign. In addition, the sign can display items such as customer, delivery destination, order number, material, dimensions, quantity, delivery date, remarks, and other items as desired, making it easy for on-site workers to understand and reducing transportation errors.

[0052] Unused raw paper is returned to the raw paper storage area and stored until the next use. Production managers or on-site workers can freely check inventory information, so even if the raw paper management staff is absent, there will be no stagnation or confusion in operations, resulting in superior work efficiency.

[0053] If there are any changes to the lamination schedule, the production manager enters the updated information via a management terminal. When the lamination schedule is changed, the change notification terminals in the raw paper storage area, the control room, and the cutter tip receive the updated information and notify the field workers of the change with an audible alert. In addition to "change," the change notification terminals also notify information such as "cancellation," "movement," and "reproduction." This allows the production manager to notify field workers of schedule changes without having to move to the corrugator area, saving time. Furthermore, it eliminates the need to communicate information to field workers verbally or through handwritten documents, thus preventing communication errors.

[0054] The management terminal allows users to check, for example, the list of lamination schedules, the progress of currently in-production orders, and the base paper loaded on each mill roll stand. This allows production managers to monitor production progress in real time and respond immediately to customer inquiries about delivery dates or requests for changes to delivery dates. The management terminal can also display the operating speed. This allows for early detection and response to abnormalities if the corrugator stops for any reason. In the event of a corrugator malfunction, the list of lamination schedules can be checked, and actions such as reassigning orders with the nearest delivery date can be taken quickly.

[0055] The management terminal can output necessary documents based on the information recorded on the server. Examples of information that can be output include lamination schedules, raw paper inbound and outbound schedules, daily work reports, lamination results, raw paper waste volume, raw paper order forms, inbound lists, inbound lists by manufacturer, inbound lists by supplier, outbound lists, waste lists, inventory lists, inventory by product type, inventory by material, monthly inventory, and monthly inventory sheets.

[0056] The paper management tag and paper management system of the present invention have been described above with reference to the figures, but the configuration is not limited to those described above. [Industrial applicability]

[0057] The paper management tag and paper management system of the present invention are widely applicable in corrugated cardboard sheet production processes and other production sites that use rolled raw materials, as they allow for easy production of paper management tags and attachment / detachment to rolled paper, and enable accurate inventory management. [Explanation of Symbols]

[0058] 1. Paper Management System 2 rolls of base paper 2a Core 2b Base paper 3 Corrugator 4 cardboard sheets 5 Mill Roll Stand 6 Splicers 7 Single Facer 8 Glue Machine 9 Double Facer 10 Slitter Scorer 11 Cutoff 12 Management terminals 13. Tag printing machine for raw material management. 14 Servers 15 Field terminals 16 Change notification terminal 17. Paper remaining length measuring device 18 Antennas 19 Leader 20 Printing machine 21 Signboard printing machine 22. Tags for managing raw materials 23 Labels for managing raw materials

Claims

1. A base paper management system for managing roll-shaped base paper wound around a core, used in the manufacture of corrugated cardboard sheets by a corrugator, The aforementioned paper management system comprises a paper management tag equipped with an RF tag, a paper length measuring device for measuring the remaining paper length of the roll of paper, an antenna for wireless communication with the RF tag, a reader for reading information from the RF tag via the antenna, and an information processing terminal for processing the information read by the reader. The paper management system is characterized in that the paper management tag is a plate-shaped elastic body whose length in at least one direction is greater than the inner diameter of the core, and is fixed by contact with the inner surface of the core, but not by contact with it on at least two sides.

2. Multiple antennas are provided on the arms of the corrugator's mill roll stand. The base paper management system according to claim 1, characterized in that the multiple antennas are arranged so that their respective reading ranges overlap.

3. A base paper management system for managing roll-shaped base paper wound around a core, used in the manufacture of corrugated cardboard sheets by a corrugator, The aforementioned paper management system comprises a paper management tag equipped with an RF tag, a paper length measuring device for measuring the remaining paper length of the roll of paper, an antenna for wireless communication with the RF tag, a reader for reading information from the RF tag via the antenna, and an information processing terminal for processing the information read by the reader. The aforementioned paper management tag is a plate-shaped elastic body whose length in at least one direction is greater than the inner diameter of the core, and is disposed inside the core. Multiple antennas are provided on the arms of the corrugator's mill roll stand. A base paper management system characterized in that multiple antennas are arranged so that their respective reading ranges overlap.

4. The paper management system according to any one of claims 1 to 3, characterized in that the paper management tag is rectangular, the length of its short side is greater than the inner diameter of the core, and the direction of its long side coincides with the long axis of the core and is inserted into the core.

5. A paper management tag used in a paper management system for managing roll-shaped paper wound around a core, which is used in the manufacture of corrugated cardboard sheets by a corrugator, The paper management tag is characterized by having an RF tag that can be wirelessly transmitted in the paper management system, being a plate-shaped elastic body whose length in at least one direction is greater than the inner diameter of the core, and not being in surface contact with the inner surface of the core, but being fixed by contact on at least two sides.

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