Rolled paper tube and rolled package

Abstract

To provide a rolled paper tube and a rolled package, which includes means for obtaining information that a customer has certainly finished using the rolled package after selling the rolled package to the customer, and which can display a display object that facilitates traceability management at a client even if the rolled package is leaked to someone other than the customer.SOLUTION: A paper tube of the present invention has two or more types of surface-treated parts on an outer layer surface and also has a display object.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a paper tube for wrapping a rolled material and a package. More specifically, the present invention relates to a paper tube shape that enables display means carrying production information and the like to be displayed on the inner and outer layers of the paper tube used to package the rolled material, and a package with the rolled material wrapped around it. [Background technology]

[0002] Due to their high quality, carbon fiber bundles are not only suitable for civilian uses such as aerospace, industrial, and sports applications, but can also be used for military purposes as materials for weapons of mass destruction and conventional weapons, such as high-performance centrifuges for uranium enrichment, which are necessary for missile and nuclear weapon development, and are therefore known to have dual uses.For this reason, with the aim of maintaining international peace and security and protecting companies from the risk of being involved in concerned transactions, security trade controls are in place for exports of carbon fiber bundles under the international export control regime, an international framework centered on developed countries, to prevent carbon fiber bundles from falling into the hands of countries or organizations that pose security concerns, such as those that develop or manufacture weapons of mass destruction or conventional weapons.

[0003] Japan's security trade control system for exports of controlled goods such as carbon fiber bundles is based on the Foreign Exchange and Foreign Trade Act, the Export Trade Control Order, and the Ministerial Ordinance on Goods, etc. Japan's security trade control system consists of a list control system, which lists goods that are likely to be used in the development or manufacture of weapons of mass destruction or conventional weapons, and a catch-all control system, which complements other goods that are not listed. Carbon fiber bundles are classified as goods that are likely to be used in the development or manufacture of weapons of mass destruction or conventional weapons. Therefore, when exporting carbon fiber bundles, users are required to ensure that they are not diverted to uses of concern, such as the development or manufacture of weapons of mass destruction or conventional weapons. For this reason, exporters of carbon fiber bundles from Japan to foreign countries as a business are required to apply for and obtain an export license from the Minister of Economy, Trade and Industry.

[0004] Fiber bundles, which are a type of wound material, especially carbon fiber bundles, have traditionally been shipped as packages wound around paper cylinders, or so-called paper tubes, and it has been required that the paper tubes contain manufacturing history information. Conventionally, this information has been printed on a sticker-like label attached to the inside of the paper tube, along with barcode information.

[0005] First, Patent Documents 1 and 2 disclose cardboard tubes configured to prevent damage and peeling by attaching components with contactless IC tags to the inner or outer surface of the cardboard tube, without exposing the IC tag to the outer layer of the cardboard tube. Also, as a method of attaching a sticker-like label with necessary information printed on it, for example, Patent Document 3 discloses a cardboard tube with printed information (product name, company name, etc.) directly attached to the surface of the cardboard tube. Patent Document 4 discloses a cardboard tube with easily identifiable and removable colored stickers attached to both widthwise ends of the paper tube surface. Patent Document 5 discloses a cardboard tube with an embossed, uneven surface and a flat, smooth surface in the widthwise direction of the paper tube, with the embossed surface appearing in a spiral pattern. Patent Document 6, for example, discloses a so-called inside-pull paper tube (a method in which the fiber bundle is pulled out from the inside of a carbon fiber bundle winding bobbin) in which, after a fiber bundle is wound around the paper tube, spiral perforations (scores) are made in the inner surface of the paper tube to allow the wound fiber bundle to be unwound from the inside, making it easier to remove the paper tube. Patent Document 7 also discloses a cardboard tube in which, since multi-layered paper bands create surface irregularities due to the multi-layering, a non-solvent-based synthetic resin coating that absorbs the uneven surface is applied to the entire paper tube surface to improve the smoothness of the paper tube surface and suppress static electricity buildup. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-232811 [Patent Document 2] Japanese Patent Application Laid-Open No. 2008-24504 [Patent Document 3] Japanese Utility Model Application Publication No. 58-7761 [Patent Document 4] Japanese Patent Application Laid-Open No. 2001-278548 [Patent Document 5] Japanese Patent Application Publication No. 2019-119587 [Patent Document 6] Japanese Patent Application Publication No. 10-236735 [Patent Document 7] Japanese Patent Application Laid-Open No. 2010-120717 Summary of the Invention [Problem to be solved by the invention]

[0007] However, in recent years, there has been an increasing risk that carbon fiber will be leaked to parties other than authorized export customers, without the exporter's intention, in a manner that deviates from such strict security trade controls. For this reason, in order to prevent carbon fiber bundles from leaking to parties other than authorized export customers, exporters of carbon fiber bundles are being forced to adopt a system for managing consumption on a package-by-package basis, where carbon fiber bundles are wound around cardboard tubes.

[0008] In addition, in Patent Documents 1 and 2, when a carbon fiber bundle wound with a sticker-like label affixed to the surface of a cardboard tube is unwound, the uneven outer layer of the cardboard tube causes the sticker-like label to adhere insufficiently to the cardboard tube, resulting in the tail portion of the carbon fiber bundle (the beginning of the winding of the carbon fiber bundle) getting caught when unwound, causing concerns about the label tearing or damage to the carbon fiber bundle. In Patent Document 3, when a carbon fiber bundle is wound around the roll core of the patent, the cardboard tube surface is not embossed, causing concerns about the wound thread coming off, or so-called paper tube slippage. In Patent Document 4, the inability to accurately track consumption information after product consumption at the customer's site makes it difficult to trace shipped products. In Patent Document 5, when a carbon fiber bundle wound with a sticker-like label affixed to the surface of a cardboard tube is unwound, the uneven surface of the cardboard tube causes the sticker-like label to adhere insufficiently to the cardboard tube, causing the tail portion of the carbon fiber bundle (the beginning of the winding of the carbon fiber bundle) getting caught when unwound, causing concerns about the label tearing or thread breakage. In Patent Document 6, the method in question allows the paper tube to be removed from inside the carbon fiber bundle winding bobbin, which means that it is not possible to accurately grasp consumption record information after the product is consumed at the customer's site, making it impossible to trace and manage the shipped product.In Patent Document 7, when carbon fiber bundles are wound around the roll core of the patent, there is a concern that the wound yarn may come off, or so-called paper tube coming off, because the paper tube surface is not embossed.

[0009] Therefore, an object of the present invention is to provide a paper tube and a package of rolled material wound around a paper tube, which is equipped with a means for obtaining information that the customer has definitely finished using the package of rolled material after the package of rolled material is sold to the customer, and which is capable of displaying an indicator that makes it easy to trace the package at the customer's side even if the package of rolled material is leaked to someone other than the customer. [Means for solving the problem]

[0010] In order to solve the above problems, the present invention has the following configuration. (1) A paper tube characterized by having two or more types of surface treatments on the outer surface and having a display. (2) A paper tube having one or more types of surface-treated portions on the outer surface and having a display material that is surface-treated by lamination. (3) The paper tube according to (1) or (2), characterized in that the surface-treated portion has a display. (4) The paper tube according to any one of (1) to (3), characterized in that the surface-treated portion is at least one surface-treated portion selected from the group consisting of an embossed portion, a bunched portion, a smoothed portion, a waterproof portion, a non-slip portion, a parchment portion, and an inside-pull portion. (5) The paper tube according to any one of (1), (3) and (4), characterized in that the two or more types of surface-treated portions are at least two surface-treated portions selected from the group consisting of an embossed portion, a bunched portion, a smoothed portion, a waterproof portion, a non-slip portion, a parchment portion and an inside-pull portion. (6) The paper tube according to any one of (1) to (5), characterized in that the surface roughness (Sa) of the surface-treated portion is 10.0 μm or more and 80.0 μm or less. (7) A paper tube according to any one of (1) to (6), characterized in that it has a display on the inner surface. (8) The paper tube according to any one of (1) to (7), wherein the display is at least one code selected from the group consisting of a barcode, a QR code (registered trademark), an IC tag code, and an RFID code. (9) The paper tube according to any one of (1) to (8), wherein the display is a laser display and / or a label display. (10) The paper tube according to (7), wherein the marking on the inner surface is any one of a barcode, a QR code (registered trademark), an IC tag code, and an RFID code. (11) The paper tube according to (7), wherein the marking on the inner surface is a laser marking and / or a label marking. (12) A package comprising a rolled article wound around the paper tube according to any one of (1) to (11). (13) The package according to (12), characterized in that the display material on the surface-treated portion is covered with the wound material. (14) The package according to (12) or (13), characterized in that the wound material is fiber or paper. (15) The package according to (14), characterized in that the fibers are carbon fibers. [Effects of the Invention]

[0011] According to the present invention, after a rolled material package is sold to a customer, the customer can easily confirm information that the package in which the rolled material is wound has definitely been used, and even if the rolled material package is leaked to someone other than the customer, it becomes easy to trace the package at the customer's side.

[0012] Furthermore, the cardboard tube according to one embodiment of the present invention has two or more types of surface-treated portions on the outer surface of the cardboard tube, which makes the display less susceptible to damage, and makes it possible to avoid process problems such as damage to the display due to the rolled up item getting caught when the customer uses the rolled up item. [Brief explanation of the drawings]

[0013] [Figure 1] An example of a bobbin square type wound material package is shown, in which a paper tube is processed to form bunching in a portion of the embossed portion on the outer surface of the paper tube, the bunching formation portion has a display material, and the wound material is wound so that the portion of the embossed portion on the outer surface of the paper tube where bunching is formed and the display material portion are covered by the wound material, (a) is a schematic overhead view before the wound material is wound, and (b) is a schematic overhead view after the wound material has been wound. [Figure 2] FIG. 1A is a schematic overhead view showing an example of a paper tube that has been processed to form bunching on the embossed portion of the outer layer surface of the paper tube, and FIG. 1B is an enlarged schematic side view of the processed portion that forms the bunching. [Figure 3] FIG. 10 is a schematic side view showing an example of a processed part for forming bunching on the embossment on the outer layer surface of the paper tube. [Figure 4] FIG. 10 is a partially enlarged schematic side view showing an example of a corner of a processed portion where bunching is formed in an embossment on the outer layer surface of a paper tube. DETAILED DESCRIPTION OF THE INVENTION

[0014] The present invention will be described below with reference to the drawings, but the present invention is not limited to the embodiments shown in the drawings.

[0015] [Paper tube] A paper tube is a cylindrical object made of paper. Here, the surface of the paper tube is called the outer layer surface, and the inner surface of the paper tube is called the inner layer surface.

[0016] [Displayed items] The paper tube of the present invention has a display material. Furthermore, the paper tube of the present invention preferably has a display material on the surface-treated portion of the outer layer surface of the paper tube. Here, the display material refers to information that indicates the specific information of the wound product or the package in which the wound product is wound, as described below. The display material on the outer layer surface of the paper tube is preferably attached to the surface-treated portion.

[0017] [One or more types of surface treatment] The paper tube of the present invention has one or more types of surface-treated portions on the outer layer surface. The paper tube used in the present invention is not particularly limited in type of surface-treated portion of the paper tube and the outer layer of the paper tube, as long as it is made of paper. Furthermore, it is preferable that the surface-treated portion of the outer layer surface of the paper tube is at least one or two processed portions selected from the group consisting of an embossed portion, a bunched portion, a smoothed portion, a waterproof portion, an anti-slip portion, a parchment portion, and an inside-pull portion.

[0018] [Embossed part] The unevenness of the embossed portion 1 in the present invention is preferably in the form of dots when viewed from above. The dots may be in any shape, such as a circle, a diamond, a triangle, or a square, as long as they prevent the wound material from slipping off the paper tube when being wound around the paper tube.

[0019] [Bunching processing part] The bunching processing portion in the present invention refers to a recessed portion of the cardboard tube, and bunching processing refers to processing in which a desired portion of the outer layer of the cardboard tube is intentionally recessed. There is no particular limitation on the means for recessing the outer layer of the cardboard tube, but press processing in which a mold of a desired size is pressed against the cardboard tube is preferred.

[0020] [Smooth processing part] The smoothed portion in the present invention refers to a portion that is finished to be smooth (flat) as it is by the material of the cardboard tube that is applied to the outer layer of the cardboard tube.

[0021] [Waterproofed part] The waterproof portion in the present invention refers to a portion in which a waterproof film is wrapped around the outer surface of the paper tube and heat-treated to shrink the film and press-bond it to the paper tube. There are no particular restrictions on the type of material used for the film, but polyvinyl chloride, polystyrene, polyethylene, polyethylene terephthalate, polypropylene, or polyolefin is preferred.

[0022] [Anti-slip part] The anti-slip processed portion in the present invention refers to a portion in which the frictional force against the material being wound around the paper tube is improved by foaming a chemical substance applied to the surface of the paper tube.

[0023] [Parchment processed part] The parchment processing in the present invention is not particularly limited, but refers to, for example, parchment paper, which is a thin, translucent, water-resistant paper made from cotton fiber and chemical pulp as raw materials, partially swollen and solubilized by chemical treatment with concentrated sulfuric acid, then completely washed with water and dried, and is attached to the surface of the paper tube.

[0024] [Inside pull processed part] The inside-pull processed portion in the present invention refers to a portion of the paper tube where perforations are cut diagonally, allowing the paper tube to be separated and removed from the inside. The surface processed portions other than the inside-pull processed portion applied to the surface of the paper tube are not particularly limited, but are preferably embossed portions, smooth processed portions, non-slip processed portions, or parchment processed portions.

[0025] [Surface area ratio of bunched processed part] Figure 1 shows a bobbin square wound product package that uses a paper tube that has been processed to form bunching on the embossment on the outer layer surface of the paper tube, and is wound so that the processed part that forms bunching on the embossment on the outer layer surface of the paper tube is completely hidden by the wound product.As shown in Figure 1(a), the entire surface of the paper tube has a regular embossed part 1 and a bunched processed part 3 where bunching has been applied to the regular embossed part.

[0026] If the surface area of ​​the bunching processing formed portion 3 is 0.15 times or more and less than 0.50 times the outer layer surface area of ​​the entire paper tube, it is possible to display the specified display material, and the packaging when the wound material is wound around it can be wound up well without any problems.

[0027] A more preferable range is 0.20 times or more and less than 0.40 times. If the ratio is less than 0.20 times, the size of the label affixed to the surface of the paper tube will be small, i.e., the adhesiveness of the display material, such as the label, will be significantly reduced, the label will be damaged, and foreign matter may be mixed into the rolled product package. Also, if the ratio is 0.40 times or more, the smooth area due to the bunching process will increase overall, and the embossed area 1 that grips the rolled product while winding it will decrease, which may cause the rolled product to slip on the smooth area when wound around the paper tube, significantly reducing packageability.

[0028] [Bunching depth] Figure 2 shows a paper tube in which bunching has been formed in the embossment on the outer layer surface of the paper tube, and the side of the outer layer of the paper tube in which bunching has been formed in the embossment on the outer layer surface of the paper tube. The depth 6 of the bunched part in Figure 2 is preferably in the range of 0.05 to 0.30 mm, with a range of 0.10 to 0.20 mm being more preferable. The length 7 of the bunched part in the vertical direction of the paper tube is preferably in the range of 10.0 to 52.0 mm, with a range of 20.0 to 45.0 mm being more preferable.

[0029] [R part of bunching processing] The shape of the part where bunching is formed in the embossment on the outer surface of the cardboard tube is preferably a rounded corner shape as shown in Fig. 3. Furthermore, the corners 8(a) to (d) of the bunching processed part are preferably formed into a curved surface as a whole, such as a combination of an arc shape (curvature radius: r) and a straight part 9 as shown in Fig. 4.

[0030] [Surface roughness of surface-processed part (Sa)] In the present invention, the surface roughness of the surface-treated outer layer of the paper tube is measured and calculated using the arithmetic mean roughness of the area, Sa (Sa is defined in ISO25178). The average unevenness of the entire surface area is taken as a reference line, and the average distance from the reference line in that section is represented by Sa. The lower this value, the flatter and smoother the surface.

[0031] The surface roughness (Sa) of the surface-treated portion of the outer layer surface of the paper tube is preferably 10.0 μm or more and 80.0 μm or less, more preferably 14.0 μm or more and 23.0 μm or less, and even more preferably 17.0 μm or more and 23.0 μm or less.

[0032] If the surface roughness (Sa) is less than 10.0 μm, the paper tube surface will be too smooth, which may cause the wound material, such as a fiber bundle, wound around the paper tube to come off the paper tube, a problem known as paper tube slippage. If the surface roughness (Sa) is more than 80.0 μm, the paper tube surface will be too rough, which may cause damage to the indicia displayed on the paper tube or make the indicia difficult to read. As shown in FIG. 3, the surface roughness (Sa) of the portions other than the bunching processing portion 3 is preferably 1.2 to 3.0 times the surface roughness (Sa) of the bunching processing portion 3. A more preferable ratio is 1.5 to 2.5 times.

[0033] [Inner surface display] In the present invention, one of the preferred embodiments is one in which not only the display material is provided on the outer surface but also on the inner surface.

[0034] [External and internal surface displays] The markings on the outer and inner surfaces used in the present invention are not particularly limited, but are preferably laser markings and / or labelings. It is also preferable that the markings on the outer and inner surfaces be at least one code selected from the group consisting of a barcode, a QR code (registered trademark), an IC tag code, and an RFID code. Information that can identify the unique information of the wound package, which is the product, is written on these marks.

[0035] The unique information of a wound material package may include, for example, any information selected from the variety name of the wound material package, manufacturer, manufacturing date (manufacturing date), lot number (manufacturing lot), wound weight, wound length, package number, product grade, etc., and may also include other information, which may be directly written or may correspond one-to-one to the above information registered in the system main body using a unique number or symbol.

[0036] [Laser Display] In the present invention, laser marking refers to a marking on an object in which a logo, product name, serial number, model number, etc. is printed by irradiating the object with laser light to melt, scorch, peel, oxidize, scrape, or discolor the surface.

[0037] Here, the marking method for printing laser markings on a paper tube can be either the mask method, in which a laser beam is irradiated onto a surface and only the area that passes through a mask (the area shaped like the characters or shape to be printed) is printed, or the scan method, in which a single point of laser beam is irradiated and the marking is made in a single stroke. Either method can be used. Specifically, the paper tube is set in a predetermined position on a laser marker. The laser beam emitted from the laser marker is then used to cut the surface of the paper tube, peeling off the surface layer of the outer layer. The laser-irradiated area then changes color, making the printed area visible.

[0038] Depending on the object to be printed, gases and smoke may be generated during printing, which may have a negative effect on the laser marker device itself, so it is preferable to install a dust collector and air purifier.A more preferable method is to blow air onto the printed area after laser printing, then collect the dust with a dust collector and purify the harmful gas and smoke components with an air purifier.

[0039] [Laser printing processing type] In the present invention, the type of laser used to directly print on the outer or inner surface of the paper tube is not particularly limited, but it is preferable to use any of the following laser methods: YVO4 laser, YAG laser, CO2 laser, and fiber laser.

[0040] [Label Display] The label used for labeling in the present invention is not particularly limited, but is preferably one having adhesive on the back surface that allows it to be attached to a paper tube, and is preferably attached by any of the following methods: direct attachment by hand, attachment by a handy or manual labeling machine, or attachment by a fully automatic labeling machine. For example, labeling attached using thermal paper is preferred.

[0041] The size of the label is preferably 10 to 100 mm in the vertical direction and 20 to 80 mm in the horizontal direction. The thickness of the label is preferably 40 to 120 μm, more preferably in the range of 60 to 100 μm.

[0042] [R processing of label] The corners of the label used in the label display of the present invention are preferably formed into a curved shape as a whole, such as a combination of an arc shape (curvature radius: r) and a straight line portion 9 as shown in FIG.

[0043] The radius of the R-cutting of the label of the present invention is as defined in JIS B 0701-1987, and the radius of the R-cutting is preferably 2 mm or more and 4 mm or less. If the radius is 2 mm or more, when the fiber bundle comes into contact with the corner of the label during unwinding, the angularity of the corner creates a relatively large adhesive area, making the label corner less likely to peel off. Furthermore, if the radius is 4 mm or less, the printing space on the label is not limited, and necessary information can be displayed. In the present invention, no R-cutting is designated as R0, R1 if R-cutting with a radius of 1 mm is performed, R2 if R-cutting with a radius of 2 mm is performed, R3 if R-cutting with a radius of 3 mm is performed, and R4 if R-cutting with a radius of 4 mm is performed.

[0044] [Label Lamination] In the present invention, it is preferable to laminate the surface of the label used for labeling. By laminating the label surface, the label is less likely to be damaged when the thread is unwound, and the printed text on the label is less likely to adhere to the wound material. The material used for lamination in the present invention is not particularly limited, but polypropylene (also referred to as PP) or polyester (also referred to as PL) is preferred. The laminated label is cut to a specified size for use.

[0045] [Scroll] The term "wound product" as used herein refers to a product obtained by winding a continuously produced raw material into a specified width, diameter and weight.

[0046] The type of wound material used in the present invention is not particularly limited, but fiber or paper is preferred. Fiber bundles are more preferred, and the type of fiber is not particularly limited as long as it is a fiber bundle consisting of multiple single yarns. Among these, reinforced fibers are preferred. Here, reinforced fibers refer to fibers for reinforcing resins, and at least one fiber selected from the group consisting of carbon fiber, aramid fiber, and glass fiber is more preferred. Carbon fiber is particularly preferred because it can provide a lightweight composite material with excellent strength. The carbon fiber may be either a PAN-based or pitch-based fiber.

[0047] [package] A rolled product wound around a paper tube is called a package, and it is a preferred embodiment that the markings on the surface-treated portion are covered by the rolled product. If the markings on the surface-treated portion are covered by the rolled product in this way, the markings cannot be seen in the form of a package, and can only be seen when the rolled product is completely unwound (used), making it easy to trace the unique information of the package.

[0048] For example, in the case of carbon fiber, a fiber bundle consisting of approximately 500 to 200,000 continuous fiber single yarns is typically wound around a bobbin and supplied as a wound body (package). While untwisted fiber bundles are preferred, twisted strands can also be used, and even strands that are twisted during transportation are applicable to the present invention. There are no restrictions on the number of single yarns. When using a so-called large tow with a large number of single yarns, the price per unit weight of the fiber bundle is low, so a larger number of single yarns is preferable because it reduces the cost of the final product. A range of 1,000 to 60,000 single yarns is more preferred. Furthermore, a so-called doubled form in which fiber bundles are wound together into a single bundle may also be used as the large tow. [Example]

[0049] The present invention will be described below with reference to examples and comparative examples, but the present invention should not be construed as being limited in any way by these examples and comparative examples.

[0050] The arithmetic mean height (Sa) of the processed portion of the outer surface of the paper tube is a parameter that expands the arithmetic mean roughness (Ra), a two-dimensional roughness parameter defined in ISO 25178, into three dimensions (surface), i.e., it is a parameter for evaluating surface roughness, and is a numerical value that represents the average of the absolute values ​​of the difference in height from the average plane of each measurement point in the reference area (evaluation area). In other words, the "arithmetic mean height (Sa) of the paper tube outer surface processed and formed portion over a length 7 in the vertical direction of the paper tube" is the average value of the height or depth of each unevenness of the paper tube outer surface processed and formed portion over a length 7 in the vertical direction of the paper tube, relative to the plane averaged over the length 7 of the paper tube outer surface processed and formed portion. Note that the arithmetic mean height (Sa) here is synonymous with surface roughness (Sa).

[0051] The arithmetic mean height (Sa) can be calculated by measuring the outer surface processed portion 7 of the paper tube using a digital microscope and using software installed in the digital microscope using the following formula 1. In the following formula 1, A is the area of ​​the reference region (evaluation area), and Z(x, y) is the difference in height from the average plane of each measurement point. Sa=1 / A∬A|Z(x,y)|dxdy The following conditions are an example of the evaluation conditions for the outer surface-treated portion 7 of the cardboard tube. The digital microscope may be substituted with a product equivalent to the "VHX-7000."

[0052] [Evaluation conditions for surface roughness Sa] Microscope: Keyence Digital Microscope VHX-7000 Magnification: 20x objective lens Evaluation position: The outer surface of the paper tube at a distance of 2.0 mm to 30.0 mm directly below the objective lens Evaluation region (evaluation area): A quadrilateral region with one side of 3,000 μm or more and 20,000 μm or less, preferably a quadrilateral region with one side of 10,000 μm or more and 16,000 μm or less The method for measuring the surface roughness (Sa) of the processed portion of the outer layer surface of the paper tube and the method for evaluating the effect are as follows.

[0053] (1) Measurement and evaluation methods The evaluation was carried out at room temperature. After setting the measurement conditions as described above, 10 images were taken for each standard paper tube, and the average value was taken as the measured surface roughness (Sa). The average value was rounded to three decimal places, and the value to two decimal places was taken as the average surface roughness (Sa).

[0054] [Evaluation criteria for the appearance of the displayed object and the condition of the removed thread] The method for evaluating the appearance of the markings and the state of the released yarn is as follows: A bobbin with a carbon fiber bundle wound around a paper tube having a marking displayed on the surface of the outer layer of the surface-treated paper tube is unwound.

[0055] (2) Measurement and evaluation methods A bobbin was prepared by winding a carbon fiber bundle around a paper tube with a surface-treated outer layer having a display attached to the surface. The prepared bobbin was set on an unwinding creel, a yarn path was created, and then the bobbin was unwound vertically using an unwinding winder.

[0056] [Fiber bundle and unwinding conditions] Fiber bundle (1): 3,000 filaments, manufactured by Toray, product name: "Torayca (registered trademark)" T300B-3K Fiber bundle (2): 12,000 filaments, manufactured by Toray, product name: "TORAYCA (registered trademark)" T700SC-12K Fiber bundle (3): 24,000 filaments, manufactured by Toray, product name: "TORAYCA (registered trademark)" T800SC-24K Fiber bundle (4): 50,000 filaments, manufactured by Toray, product name: "ZOLTEK (registered trademark)" PX35-50K Unwinding condition (1): There is no particular limit to the unwinding speed, and the wound carbon fiber bobbin is unwound until it is completely used up. The R processing of the display objects of Examples 1 to 20 and Comparative Examples 1 to 8 is R0.

[0057] Example 1 A paper tube was prepared in which a marking material was attached to the outer surface of the paper tube, which had been subjected to bunching processing by creating a depression in the embossed portion of the surface. The remaining processed portions of the outer surface of the paper tube were embossed. The fiber bundle was unwound using the above-mentioned fiber bundle (1) and unwinding conditions (1). The marking material was also displayed on the inner surface of the paper tube. As a result, there was no damage to the label marking material or laser marking material displayed on the outer surface of the paper tube, and there were no problems reading the various codes on both the label marking material and the laser marking material. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the winding bobbin during unwinding. Prior to the start of the evaluation, the surface roughness (Sa) of the bunched portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 22.28 μm. The results are shown in Table 1.

[0058] <Example 2> A paper tube was prepared in which a marking material was affixed to the outer surface of the paper tube, which had been subjected to bunching processing by creating a depression in the embossed portion of the surface. The remaining processed portions of the outer surface of the paper tube were embossed. The fiber bundle was unwound using the fiber bundle (2) and unwinding conditions (1) described above. The inner surface of the paper tube also had a marking material attached. As a result, there was no damage to the label and laser marking materials on the outer surface of the paper tube, and no problems with reading the various codes on both the label and laser marking materials. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the take-up bobbin during unwinding. Prior to the start of the evaluation, the surface roughness (Sa) of the bunched portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 22.21 μm. The results are shown in Table 1.

[0059] Example 3 A paper tube was prepared in which a marking material was affixed to the outer surface of the paper tube, which had been subjected to bunching processing by creating a depression in the embossed portion of the surface. The remaining processed portions of the outer surface of the paper tube were embossed. The fiber bundle was unwound using the above-mentioned fiber bundle (3) and unwinding conditions (1). The inner surface of the paper tube also had a marking material attached. As a result, there was no damage to the label and laser marking materials on the outer surface of the paper tube, and there were no problems reading the various codes on both the label and laser marking materials. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the take-up bobbin during unwinding. Prior to the start of the evaluation, the surface roughness (Sa) of the bunched portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 21.34 μm. The results are shown in Table 1.

[0060] Example 4 A paper tube was prepared in which a marking material was attached to the outer surface of the paper tube, which had been subjected to bunching processing by creating a depression in the embossed portion of the surface. The remaining processed portions of the outer surface of the paper tube were embossed. The fiber bundle was unwound using the above-mentioned fiber bundle (4) and unwinding conditions (1). The marking material was also attached to the inner surface of the paper tube. As a result, there was no damage to the label marking material or laser marking material on the outer surface of the paper tube, and there were no problems reading the various codes on both the label marking material and the laser marking material. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the winding bobbin during unwinding. Prior to the start of the evaluation, the surface roughness (Sa) of the bunched portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 21.43 μm. The results are shown in Table 1.

[0061] <Example 5> A paper tube was prepared in which a display material was attached to the surface of the outer layer of the paper tube, which had been waterproofed (the entire surface of the outer layer of the paper tube was covered with a nylon film), and the other processed parts of the outer layer surface of the paper tube were smooth processed parts, and the fiber bundle was unwound using the above-mentioned fiber bundle (1) and unwinding condition (1).

[0062] At that time, the paper tube inner surface was also marked with markings. As a result, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the take-up bobbin during unwinding. Incidentally, damage to the label markings and laser markings marked on the outer surface of the paper tube, and problems reading the various codes on both the label markings and laser markings did not occur because the surface of the paper tube was smooth. Furthermore, before the evaluation began, the surface roughness (Sa) of the waterproofed part was measured using the evaluation conditions for surface roughness Sa described above, and was found to be 19.32 μm. The results are shown in Table 1.

[0063] Example 6 A paper tube was prepared in which a display material was attached to the outer surface of the paper tube, which had been waterproofed (the smoothed part was covered with a nylon film), and the other processed parts of the outer surface of the paper tube were smoothed, and the fiber bundle was unwound using the above-mentioned fiber bundle (2) and unwinding condition (1).

[0064] At that time, the paper tube inner surface was also marked with markings. As a result, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the take-up bobbin during unwinding. Incidentally, damage to the label markings and laser markings marked on the outer surface of the paper tube, and problems reading the various codes on both the label markings and laser markings did not occur because the surface of the paper tube was smooth. Furthermore, before the evaluation began, the surface roughness (Sa) of the waterproofed part was measured using the evaluation conditions for surface roughness Sa described above, and was found to be 19.82 μm. The results are shown in Table 1.

[0065] Example 7 A paper tube was prepared in which a display material was attached to the outer surface of the paper tube, which had been waterproofed (the smoothed part was covered with a nylon film), and the other processed parts of the outer surface of the paper tube were smoothed, and the fiber bundle was unwound using the above-mentioned fiber bundle (3) and unwinding condition (1).

[0066] At that time, the paper tube inner surface was also marked with markings. As a result, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the take-up bobbin during unwinding. Incidentally, damage to the label markings and laser markings marked on the outer surface of the paper tube, and problems reading the various codes on both the label markings and laser markings did not occur because the surface of the paper tube was smooth. Furthermore, before the evaluation began, the surface roughness (Sa) of the waterproofed part was measured using the evaluation conditions for surface roughness Sa described above, and was found to be 17.90 μm. The results are shown in Table 1.

[0067] Example 8 A paper tube was prepared in which a display material was attached to the outer surface of the paper tube, which had been waterproofed (the smoothed part was covered with a nylon film), and the other processed parts of the outer surface of the paper tube were smoothed parts, and the fiber bundle was unwound using the above-mentioned fiber bundle (4) and unwinding condition (1).

[0068] At that time, the paper tube inner surface was also marked with markings. As a result, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the take-up bobbin during unwinding. Incidentally, damage to the label markings and laser markings marked on the outer surface of the paper tube, and problems reading the various codes on both the label markings and laser markings did not occur because the surface of the paper tube was smooth. Furthermore, before the evaluation began, the surface roughness (Sa) of the waterproofed part was measured using the evaluation conditions for surface roughness Sa described above, and was found to be 17.50 μm. The results are shown in Table 1.

[0069] Example 9 A paper tube was prepared with a label attached to the outer surface of the paper tube, which had been smoothed (flattened), and the remaining processed portions of the outer surface of the paper tube were parchment-processed. The fiber bundle was unwound using the above-mentioned fiber bundle (1) and unwinding conditions (1). The paper tube also had a label attached to the inner surface. As a result, no damage occurred to the unwound fiber bundle. However, during unwinding, the position of the wound product shifted, resulting in a partial disruption of the wound shape. Incidentally, because the surface of the paper tube was smooth, no damage occurred to the label and laser markings on the outer surface of the paper tube, nor were there any problems reading the various codes on both the label and laser markings. Prior to the start of the evaluation, the surface roughness (Sa) of the smoothed portion was measured using the above-mentioned surface roughness evaluation conditions, and was found to be 15.30 μm. The results are shown in Table 1.

[0070] Example 10 A paper tube was prepared with a label attached to the outer surface of the paper tube, which had been smoothed (flattened), and the remaining processed portions of the outer surface of the paper tube were parchment-processed. The fiber bundle was unwound using the above-mentioned fiber bundle (2) and unwinding conditions (1). The fiber bundle was also labeled on the inner surface of the paper tube. As a result, no damage occurred to the unwound fiber bundle. However, during unwinding of the fiber bundle, the position of the wound product shifted, resulting in a partial disruption of the wound shape. Incidentally, due to the smooth surface of the paper tube, no damage occurred to the label and laser-labeled labels on the outer surface of the paper tube, and no problems reading the various codes on both the label and laser-labeled labels. Prior to the evaluation, the surface roughness (Sa) of the smoothed portion was measured using the above-mentioned surface roughness evaluation conditions, and was found to be 14.63 μm. The results are shown in Table 1.

[0071] Example 11 A paper tube was prepared with a label attached to the outer surface of the paper tube, which had been smoothed (flattened), and the remaining processed portions of the outer surface of the paper tube were parchment-processed. The fiber bundle was unwound using the above-mentioned fiber bundle (3) and unwinding conditions (1). The fiber bundle was also labeled on the inner surface of the paper tube. As a result, no damage occurred to the unwound fiber bundle. However, during unwinding of the fiber bundle, the position of the wound product shifted, resulting in a partial disruption of the wound shape. Incidentally, because the surface of the paper tube was smooth, no damage occurred to the label and laser-labeled labels on the outer surface of the paper tube, nor were there any problems reading the various codes on both the label and laser-labeled labels. Prior to the start of the evaluation, the surface roughness (Sa) of the smoothed portion was measured using the above-mentioned surface roughness evaluation conditions, and was found to be 14.73 μm. The results are shown in Table 1.

[0072] Example 12 A paper tube was prepared with a label attached to the outer surface of the paper tube, which had been smoothed (flattened), and the remaining processed portions of the outer surface of the paper tube were parchment-processed. The fiber bundle was unwound using the above-mentioned fiber bundle (4) and unwinding conditions (1). The fiber bundle was also labeled on the inner surface of the paper tube. As a result, no damage occurred to the unwound fiber bundle. However, during unwinding of the fiber bundle, the position of the wound product shifted, resulting in a partial disruption of the wound shape. Incidentally, because the surface of the paper tube was smooth, no damage occurred to the label and laser-labeled labels on the outer surface of the paper tube, nor were there any problems reading the various codes on both the label and laser-labeled labels. Prior to the start of the evaluation, the surface roughness (Sa) of the smoothed portion was measured using the above-mentioned surface roughness evaluation conditions, and was found to be 14.60 μm. The results are shown in Table 1.

[0073] Example 13 A paper tube was prepared with a label attached to the outer surface of the paper tube, which had been treated with an anti-slip finish (surface foaming treatment using chemicals), and the remaining processed portions of the outer surface of the paper tube were smooth. The fiber bundle was unwound using the above-mentioned fiber bundle (1) and unwinding conditions (1). The fiber bundle was also labeled on the inner surface of the paper tube. As a result, no damage occurred to the unwound fiber bundle. However, during unwinding of the fiber bundle, the position of the wound product shifted, resulting in a partial disruption of the wound shape. Incidentally, because the surface of the paper tube was smooth, no damage occurred to the label and laser labels on the outer surface of the paper tube, and no problems reading the various codes on both the label and laser labels. Prior to the start of the evaluation, the surface roughness (Sa) of the anti-slip processed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 16.43 μm. The results are shown in Table 1.

[0074] Example 14 A paper tube was prepared with a label attached to the outer surface of the paper tube, which had been treated with an anti-slip finish (surface foaming treatment using chemicals), and the remaining processed portions of the outer surface of the paper tube were smooth. The fiber bundle was unwound using the above-mentioned fiber bundle (2) and unwinding conditions (1). The fiber bundle was also labeled on the inner surface of the paper tube. As a result, no damage occurred to the unwound fiber bundle. However, during unwinding of the fiber bundle, the position of the wound product shifted, resulting in a partial disruption of the wound shape. Incidentally, because the surface of the paper tube was smooth, no damage occurred to the label and laser-labeled labels on the outer surface of the paper tube, and no problems reading the various codes on both the label and laser-labeled labels. Prior to the evaluation, the surface roughness (Sa) of the anti-slip processed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 16.84 μm. The results are shown in Table 1.

[0075] Example 15 A paper tube was prepared with a label attached to the outer surface of the paper tube, which had been treated with an anti-slip finish (surface foaming treatment using chemicals), and the remaining processed portions of the outer surface of the paper tube were smooth. The fiber bundle was unwound using the above-mentioned fiber bundle (3) and unwinding conditions (1). The fiber bundle was also labeled on the inner surface of the paper tube. As a result, no damage occurred to the unwound fiber bundle. However, during unwinding of the fiber bundle, the position of the wound product shifted, resulting in a partial disruption of the wound shape. Incidentally, because the surface of the paper tube was smooth, no damage occurred to the label and laser labels on the outer surface of the paper tube, and no problems reading the various codes on both the label and laser labels. Prior to the start of the evaluation, the surface roughness (Sa) of the anti-slip processed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 16.24 μm. The results are shown in Table 1.

[0076] Example 16 A paper tube was prepared with a label attached to the outer surface of the paper tube, which had been treated with an anti-slip finish (surface foaming treatment using chemicals), and the remaining processed portions of the outer surface of the paper tube were smooth. The fiber bundle was unwound using the above-mentioned fiber bundle (4) and unwinding conditions (1). The inner surface of the paper tube also had a label attached. As a result, no damage occurred to the unwound fiber bundle. However, during unwinding of the fiber bundle, the position of the wound product shifted, resulting in a partial disturbance in the winding shape. Incidentally, because the surface of the paper tube was smooth, no damage occurred to the label and laser markings on the outer surface of the paper tube, and no problems reading the various codes on both the label and laser markings. Prior to the start of the evaluation, the surface roughness (Sa) of the anti-slip processed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 16.77 μm. The results are shown in Table 1.

[0077] Example 17 A paper tube was prepared with a parchment-treated outer surface (a treatment that provides excellent strength, water resistance, and chemical resistance) and a label attached to it. The remaining treated portions of the outer surface were treated with an anti-slip finish. The fiber bundle was unwound using the fiber bundle (1) and unwinding conditions (1) described above. The fiber bundle was also labeled on the inner surface of the paper tube. As a result, no damage occurred to the unwound fiber bundle. However, during unwinding, the position of the wound product shifted, resulting in a partial disruption of the wound shape. Incidentally, because the surface of the paper tube was smooth, no damage occurred to the label and laser-labeled labels on the outer surface of the paper tube, nor were there any problems reading the various codes on both the label and laser-labeled labels. Prior to the evaluation, the surface roughness (Sa) of the parchment-treated portion was measured using the evaluation conditions for surface roughness Sa described above, and was found to be 16.38 μm. The results are shown in Table 1.

[0078] Example 18 A paper tube was prepared with a parchment-treated outer surface (a treatment that provides excellent strength, water resistance, and chemical resistance) and a label attached to it. The remaining treated portions of the outer surface were treated with an anti-slip finish. The fiber bundle was unwound using the fiber bundle (2) and unwinding conditions (1) described above. The fiber bundle was also labeled on the inner surface of the paper tube. As a result, no damage occurred to the unwound fiber bundle. However, during unwinding, the position of the wound product shifted, resulting in a partial disruption of the wound shape. Incidentally, because the surface of the paper tube was smooth, no damage occurred to the label and laser-labeled labels on the outer surface of the paper tube, nor were there any problems reading the various codes on both the label and laser-labeled labels. Prior to the evaluation, the surface roughness (Sa) of the parchment-treated portion was measured using the evaluation conditions for surface roughness Sa described above, and was found to be 16.91 μm. The results are shown in Table 1.

[0079] Example 19 A paper tube was prepared with a parchment-treated outer surface (a treatment that provides excellent strength, water resistance, and chemical resistance) and a label attached to it. The remaining treated portions of the outer surface were treated with an anti-slip finish. The fiber bundle was unwound using the fiber bundle (3) and unwinding conditions (1) described above. The fiber bundle was also labeled on the inner surface of the paper tube. As a result, no damage occurred to the unwound fiber bundle. However, during unwinding, the position of the wound product shifted, resulting in a partial disruption of the wound shape. Incidentally, because the surface of the paper tube was smooth, no damage occurred to the label and laser-labeled labels on the outer surface of the paper tube, nor were there any problems reading the various codes on both the label and laser-labeled labels. Prior to the evaluation, the surface roughness (Sa) of the parchment-treated portion was measured using the evaluation conditions for surface roughness Sa described above, and was found to be 15.94 μm. The results are shown in Table 1.

[0080] Example 20 A paper tube was prepared with a parchment-treated outer surface (a treatment that provides excellent strength, water resistance, and chemical resistance) and a label attached to it. The remaining treated portions of the outer surface were treated with an anti-slip finish. The fiber bundle was unwound using the fiber bundle (4) and unwinding conditions (1) described above. The fiber bundle was also labeled on the inner surface of the paper tube. As a result, no damage occurred to the unwound fiber bundle. However, during unwinding, the position of the wound product shifted, resulting in a partial disruption of the wound shape. Incidentally, because the surface of the paper tube was smooth, no damage occurred to the label and laser-labeled labels on the outer surface of the paper tube, nor were there any problems reading the various codes on both the label and laser-labeled labels. Prior to the evaluation, the surface roughness (Sa) of the parchment-treated portion was measured using the evaluation conditions for surface roughness Sa described above, and was found to be 15.05 μm. The results are shown in Table 1.

[0081] <Example 21> A paper tube with an embossed outer surface and a label attached to the embossed portion was prepared. The fiber bundle (1) and unwinding conditions (1) were applied to unwind the fiber bundle. The label was processed with R3 and laminated with a polypropylene film. The label was also printed on the inner surface of the paper tube. As a result, there was no damage to the label displayed on the outer surface of the paper tube, and no problems with reading the various codes on the label. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the take-up bobbin during unwinding. Prior to the start of the evaluation, the surface roughness (Sa) of the embossed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 43.48. The results are shown in Table 2.

[0082] Example 22 The fiber bundle was unwound in the same manner as in Example 21, except that the label was laminated with a polyester film, using the above-mentioned fiber bundle (1) and unwinding conditions (1). As a result, there was no damage to the label displayed on the outer surface of the paper tube, and no problems occurred with reading the various codes on the label. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the winding bobbin during unwinding. Prior to the start of the evaluation, the surface roughness (Sa) of the embossed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 46.10 μm. The results are shown in Table 2.

[0083] Example 23 The same procedure as in Example 21 was followed, except that the R processing of the label was changed to R2. The fiber bundle was unwound using the above-mentioned fiber bundle (1) and unwinding conditions (1). As a result, there was no damage to the label displayed on the outer surface of the paper tube, and no problems occurred with reading the various codes on the label. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the winding bobbin during unwinding. Before the start of the evaluation, the surface roughness (Sa) of the embossed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 45.15 μm. The results are shown in Table 2.

[0084] Example 24 The same procedure as in Example 21 was followed, except that the R processing of the label was changed to R4. The fiber bundle was unwound using the above-mentioned fiber bundle (1) and unwinding conditions (1). As a result, there was no damage to the label displayed on the outer surface of the paper tube, and no problems occurred with reading the various codes on the label. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the winding bobbin during unwinding. Prior to the start of the evaluation, the surface roughness (Sa) of the embossed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 42.02 μm. The results are shown in Table 2.

[0085] Example 25 The same procedure was followed as in Example 21, except that the fiber bundle was unwound using the above-mentioned fiber bundle (2). As a result, there was no damage to the label displayed on the outer surface of the paper tube, and no problems occurred with reading the various codes on the label. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the winding bobbin during unwinding. Before the start of the evaluation, the surface roughness (Sa) of the embossed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 41.79 μm. The results are shown in Table 2.

[0086] <Example 26> This was Example 21, except that the fiber bundle was unwound using the above-mentioned fiber bundle (3). As a result, there was no damage to the label displayed on the outer surface of the paper tube, and no problems occurred with reading the various codes on the label. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the winding bobbin during unwinding. Before the start of the evaluation, the surface roughness (Sa) of the embossed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 44.01 μm. The results are shown in Table 2.

[0087] Example 27 The same procedure was followed as in Example 21, except that the fiber bundle was unwound using the above-mentioned fiber bundle (4). As a result, there was no damage to the label displayed on the outer surface of the paper tube, and no problems occurred with reading the various codes on the label. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the winding bobbin during unwinding. Before the start of the evaluation, the surface roughness (Sa) of the embossed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 38.77 μm. The results are shown in Table 2.

[0088] Example 28 The same procedure as in Example 21 was followed, except that a label was attached to the bunched portion. The fiber bundle was unwound using the above-mentioned fiber bundle (1) and unwinding conditions (1). As a result, there was no damage to the label displayed on the outer surface of the paper tube, and no problems occurred with reading the various codes on the label. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the winding bobbin during unwinding, resulting in good quality. Prior to the start of the evaluation, the surface roughness (Sa) of the bunched portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 18.96 μm. The results are shown in Table 2.

[0089] Example 29 This was Example 28, except that the fiber bundle was unwound using the above-mentioned fiber bundle (2). As a result, there was no damage to the label displayed on the outer surface of the paper tube, and no problems occurred with reading the various codes on the label. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the winding bobbin during unwinding, and the quality was good. Before the evaluation began, the surface roughness (Sa) of the bunched portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 23.81 μm. The results are shown in Table 2.

[0090] Example 30 This was Example 28, except that the fiber bundle was unwound using the above-mentioned fiber bundle (3). As a result, there was no damage to the label displayed on the outer surface of the paper tube, and no problems occurred with reading the various codes on the label. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the winding bobbin during unwinding, and the quality was good. Before the start of the evaluation, the surface roughness (Sa) of the bunched portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 22.30 μm. The results are shown in Table 2.

[0091] Example 31 This was Example 28, except that the fiber bundle was unwound using the above-mentioned fiber bundle (4). As a result, there was no damage to the label displayed on the outer surface of the paper tube, and no problems occurred with reading the various codes on the label. Furthermore, there was no damage to the unwound fiber bundle, and no disturbance to the winding shape of the winding bobbin during unwinding, and the quality was good. Before the start of the evaluation, the surface roughness (Sa) of the bunched portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 24.03 μm. The results are shown in Table 2.

[0092] <Comparative Example 1> A paper tube was prepared in which the entire outer surface of the paper tube was embossed, including the area where the markings were to be attached. The fiber bundle (1) and unwinding conditions (1) were applied and unwinding was performed. The paper tube used had no markings on the inner surface. As a result, some of the codes on the markings were missing and could not be read by laser. Furthermore, the lack of markings on the inner surface of the paper tube made it impossible to read detailed information on the wound material, resulting in problems with trace management. Prior to the start of the evaluation, the surface roughness (Sa) of the embossed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 44.34 μm. The results are shown in Table 1.

[0093] <Comparative Example 2> A paper tube was prepared in which the entire outer surface of the paper tube, including the area where the marking material was to be attached, was embossed. The fiber bundle was unwound using the fiber bundle (2) and unwinding conditions (1) described above. A paper tube without a marking material on the inner surface of the paper tube was used. As a result, some of the labeling material on the outer surface of the paper tube was damaged. Furthermore, damage occurred to the fiber bundle that came into contact with the peeled portion of the labeling material. Furthermore, when various codes on the marking material were read by laser, some of the printed codes were missing, making them unreadable. Furthermore, the lack of marking material on the inner surface of the paper tube made it impossible to read detailed information on the wound material, resulting in problems with trace management. Prior to the start of the evaluation, the surface roughness (Sa) of the embossed portion was measured using the surface roughness Sa evaluation conditions described above, and was found to be 41.65 μm. The results are shown in Table 1.

[0094] <Comparative Example 3> A paper tube was prepared in which the entire outer surface of the paper tube, including the area where the marking material was to be attached, was embossed. The fiber bundle was unwound using the fiber bundle (3) and unwinding conditions (1) described above. A paper tube without a marking material on the inner surface of the paper tube was used. As a result, some of the labeling material displayed on the outer surface of the paper tube was damaged. Furthermore, damage to the fiber bundles that came into contact with the peeled portion of the labeling material occurred. Furthermore, when various codes on the marking material were read by laser, some of the printed codes were missing and could not be read. Furthermore, the lack of marking material on the inner surface of the paper tube made it impossible to read detailed information on the wound material, resulting in problems with trace management. Prior to the start of the evaluation, the surface roughness (Sa) of the embossed portion was measured using the surface roughness Sa evaluation conditions described above and was found to be 42.49 μm. The results are shown in Table 1.

[0095] <Comparative Example 4> A paper tube was prepared in which the entire outer surface of the paper tube, including the area where the marking material was to be attached, was embossed. The fiber bundle was unwound using the fiber bundle (4) and unwinding conditions (1) described above. The paper tube used had no marking material on the inner surface. As a result, some of the labeling material on the outer surface of the paper tube was damaged. Furthermore, damage occurred to the fiber bundles that came into contact with the peeled portion of the labeling material. Furthermore, when it came to laser reading various codes on the marking material, some of the printed codes were missing and could not be read. Furthermore, the lack of marking material on the inner surface of the paper tube made it impossible to read detailed information on the wound material, resulting in problems with trace management. Prior to the start of the evaluation, the surface roughness (Sa) of the embossed portion was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 44.87 μm. The results are shown in Table 1.

[0096] <Comparative Example 5> A paper tube was prepared in which the entire outer surface of the paper tube, including the area where the marking material was to be attached, was processed as an inside-pull processed area. The fiber bundle (1) and unwinding conditions (1) were applied to unwind the fiber bundle. The paper tube used had no marking material on the inner surface. As a result, some of the codes on the marking material were missing and could not be read by laser. Furthermore, the lack of marking material on the inner surface of the paper tube made it impossible to read detailed information on the wound material, resulting in problems with trace management. Prior to the start of the evaluation, the surface roughness (Sa) of the embossed area was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 66.21 μm. The results are shown in Table 1.

[0097] <Comparative Example 6> A paper tube was prepared in which the entire outer surface of the paper tube, including the area where the marking material was to be attached, was processed as an inside-pull processed area. The fiber bundle (2) and unwinding conditions (1) were applied to unwind the fiber bundle. The paper tube used had no marking material on the inner surface. As a result, some of the label marking material on the outer surface of the paper tube was damaged. Furthermore, when it came to laser reading the various codes on the marking material, some of the printed codes were missing, making them unreadable. Furthermore, the lack of marking material on the inner surface of the paper tube made it impossible to read detailed information on the wound material, resulting in problems with trace management. Prior to the start of the evaluation, the surface roughness (Sa) of the embossed area was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 65.18 μm. The results are shown in Table 1.

[0098] <Comparative Example 7> A paper tube was prepared in which the entire outer surface of the paper tube, including the area where the marking material was to be attached, was processed as an inside-pull processed area. The fiber bundle (3) and unwinding conditions (1) were applied to unwind the fiber bundle. The paper tube used had no marking material on the inner surface. As a result, some of the label marking material on the outer surface of the paper tube was damaged. Furthermore, when it came to laser reading the various codes on the marking material, some of the printed codes were missing, making them unreadable. Furthermore, the lack of marking material on the inner surface of the paper tube made it impossible to read detailed information on the wound material, resulting in problems with trace management. Prior to the start of the evaluation, the surface roughness (Sa) of the embossed area was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 67.56 μm. The results are shown in Table 1.

[0099] <Comparative Example 8> A paper tube was prepared in which the entire outer surface of the paper tube, including the area where the marking material was to be attached, was processed as an inside-pull processed area. The fiber bundle (4) and unwinding conditions (1) were applied to unwind the fiber bundle. The paper tube used had no marking material on the inner surface. As a result, some of the label marking material on the outer surface of the paper tube was damaged. Furthermore, when it came to laser reading the various codes on the marking material, some of the printed codes were missing, making them unreadable. Furthermore, the lack of marking material on the inner surface of the paper tube made it impossible to read detailed information on the wound material, resulting in problems with trace management. Prior to the start of the evaluation, the surface roughness (Sa) of the embossed area was measured using the above-mentioned surface roughness Sa evaluation conditions, and was found to be 73.46 μm. The results are shown in Table 1.

[0100] [Table 1]

[0101] [Table 2] [Explanation of symbols]

[0102] 1: Embossed part 2: Label for attaching to the inner layer of the paper tube 3: Paper tube outer layer surface processing molding part 4: Label for attaching to the outer layer of the paper tube 5: Rolled packaging 6: Bulkiness of the outer surface processed molded part of the paper tube 7: Length of the outer surface processing molded part of the paper tube in the vertical direction of the paper tube 8: Radius of curvature of the outer surface processing molding R part of the paper tube 9: Length of the outer horizontal part of the paper tube

Claims

1. A paper tube having two or more types of surface-treated portions on the outer surface and having a display.

2. A paper tube having one or more types of surface-treated portions on the outer layer surface and having a display material surface-treated by lamination.

3. 3. The cardboard tube according to claim 1, wherein the surface-treated portion has a display.

4. 3. The paper tube according to claim 1, wherein the surface treated portion is at least one surface treated portion selected from the group consisting of an embossed portion, a bunched portion, a smoothed portion, a waterproof portion, a non-slip portion, a parchment portion, and an inside-pull portion.

5. 4. The paper tube according to claim 1 or 3, characterized in that the two or more types of surface treated portions are at least two surface treated portions selected from the group consisting of an embossed portion, a bunched portion, a smoothed portion, a waterproof portion, a non-slip portion, a parchment portion and an inside-pull portion.

6. 3. The paper tube according to claim 1, wherein the surface roughness (Sa) of the surface-treated portion is 10.0 μm or more and 80.0 μm or less.

7. 3. The paper tube according to claim 1, wherein the inner surface has a display.

8. 3. The cardboard tube according to claim 1, wherein the display is at least one code selected from the group consisting of a barcode, a QR code (registered trademark), an IC tag code, and an RFID code.

9. The cardboard tube according to claim 1 or 2, characterized in that the marking is a laser marking and / or a label marking.

10. The cardboard tube according to claim 7, wherein the marking on the inner surface is any one of a barcode, a QR code (registered trademark), an IC tag code, and an RFID code.

11. The cardboard tube according to claim 7, wherein the marking on the inner surface is a laser marking and / or a label marking.

12. A package comprising a rolled article wound around the paper tube according to claim 1 or 2.

13. 13. The package according to claim 12, wherein the wound material covers the display material on the surface-treated portion.

14. 13. The package of claim 12, wherein the winding is textile or paper.

15. 15. The package of claim 14, wherein the fibers are carbon fibers.

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