Label manufacturing method

Abstract

To provide a manufacturing method of a label which prevents a pull-out waste of an insertion hole (through hole) from dropping when manufacturing the label without using a supporting substrate other than a label substrate, and can prevent the pull-out waste from being mixed into an automatic attachment device.SOLUTION: A manufacturing method of a label having an insertion hole for attaching the label to a neck part of a container includes: a cutting step of forming an outline of the insertion hole in a sheet-like label substrate having a first face and a second face on an opposite side of the first face; and an inside-removing step of removing a part of a label substrate in an inside surrounded by the outline of the insertion hole from the sheet-like label substrate. In the manufacturing method of the label, the cutting step includes forming an insertion hole outline cutting line penetrating between the first face and the second face of the label substrate other than a partial temporal connecting site for forming the outline of the insertion hole.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a method for manufacturing labels, and more particularly to a method for manufacturing labels having insertion holes for attachment to the necks of containers, particularly labels suitable for use in an automatic label attachment device that feeds out labels one by one and attaches them to the necks of containers such as vials and bottles. [Background technology]

[0002] Campaign stickers and pop labels displaying sales promotion information have traditionally been used on containers for various products such as soft drinks, alcoholic beverages, and seasonings that are displayed on shelves in convenience stores, supermarkets, etc. Pop labels in particular are often used on the necks of containers such as glass bottles, and are known to include labels with insertion holes formed in label-shaped sheet pieces that allow the necks of the containers to fit into and lock, as well as labels with slits formed to allow the necks to fit into.

[0003] In general, in manufacturing such labels, multiple labels are produced at once from a single sheet to enable high-speed mass production. When labels are to be applied to the necks of containers such as jars or bottles, an automatic labeling device is used to automatically feed and attach the labels one by one to the necks of the containers, thereby attaching the labels to a large number of containers in a short period of time.

[0004] For example, Patent Document 1 (JP 2004-529042 A) discloses a method for producing a multi-layer printed folded leaflet or label, which includes the following steps: providing a double-sided web of sheet material having a longitudinal axis; printing on one or both sides of the web material; and folding the web material in a line parallel to the longitudinal axis of the material to form a continuous, connected multi-layer label or leaflet. Substantial cost reduction is cited as an advantage of this production method.

[0005] Patent Document 2 (JP 2017-037248 A) discloses a method for manufacturing a continuous neck label sheet, including the steps of: preparing a continuous laminate in which a continuous strip of label substrate is releasably adhered to the surface of a continuous strip of support substrate; forming circular cuts in a plan view at predetermined intervals along the length of the label substrate sheet of the continuous laminate; peeling and removing the areas surrounded by the circular cuts from the support substrate to form insertion holes for neck labels in the label substrate sheet; and forming cut lines along the label outline corresponding to the insertion holes in the surface of the continuous label substrate of the continuous laminate, thereby producing a continuous neck label sheet in which multiple neck labels are releasably adhered at predetermined intervals along the length of the support substrate. This manufacturing method does not create punch holes or the like in the support substrate, and can produce a continuous neck label sheet in which neck labels can be smoothly and continuously attached to containers using a labeling device. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Special Publication No. 2004-529042 [Patent Document 2] Japanese Patent Application Publication No. 2017-037248 Summary of the Invention [Problem to be solved by the invention]

[0007] Patent Document 1 discloses a method for manufacturing a multi-layer label that can form a through-hole that can be used to hang the label from the neck of a bottle such as a wine bottle by "hooking" the label onto the neck of the bottle. Typically, such hanging labels are made by die-cutting the label to form a circular cutout, which is then removed to form a circular hole (through-hole). However, because the through-hole is generally cut to penetrate the label, the cut-out waste material can fall into the production line, causing equipment stoppages or being mixed into the product, resulting in defects.

[0008] On the other hand, the method for manufacturing a continuous label strip disclosed in Patent Document 2 involves preparing a long laminate in which a long strip of label substrate raw material is releasably adhered to the surface of a long strip of support substrate, forming circular cuts in the surface of the label substrate raw material of the long laminate at predetermined intervals along its length, and peeling and removing the area surrounded by the circular cuts from the support substrate to form insertion holes for neck labels in the label substrate raw material. In this case, if the support substrate and the label substrate raw material are adhered to each other, it is possible to prevent the cut areas from falling off to some extent. However, the need for a support substrate separate from the label substrate raw material increases costs and generates a large amount of waste during the manufacturing process.

[0009] The present invention was completed in consideration of the above problems, and in one embodiment, it is an object of the present invention to provide a label manufacturing method that does not use a support substrate other than the label substrate, and that prevents waste material from falling out of the insertion hole (through hole) during label manufacturing, and prevents waste material from getting mixed into the automatic loading device. [Means for solving the problem]

[0010] As a result of extensive research, the inventors have found that by forming the outline of the insertion hole in the sheet-like label substrate so as to leave a temporary connection point, and then removing the inner part surrounded by the outline in a subsequent process, it is possible to properly remove the waste material after removing the insertion hole without using a separate support substrate. The present invention was completed based on this finding.

[0011] Therefore, in one aspect, the present invention is a method for manufacturing a label having an insertion hole for attachment to the neck of a container, comprising: a cutting step for forming the outline of the insertion hole in a sheet-like label substrate having a first surface and a second surface opposite to the first surface; and a hollowing step for removing from the sheet-like label substrate the portion of the label substrate inside that is surrounded by the outline of the insertion hole, wherein the cutting step includes forming an insertion hole outline cut line that penetrates between the first surface and the second surface of the label substrate except for a partial temporary connection point in order to form the outline of the insertion hole.

[0012] In one embodiment of the present invention, the cutting process includes supplying the sheet-like label base material between a pair of rolls, at least one of which has a cutting blade on the outer periphery, and using the cutting blade to form an insertion hole contour cutting line that penetrates between the first surface and the second surface of the label base material, except for partial temporary connection points.

[0013] In one embodiment of the present invention, the cutting step can include half-cutting with the punching blade so that the thickness of the partial temporary connection portion is thinner than the thickness of the label base material.

[0014] In one embodiment of the present invention, the blade height of the second portion of the punching blade that forms the partial temporary connection point is shorter than the blade height of the first portion that forms the outline of the insertion hole, and the difference in blade height between the first portion and the second portion can be 0.01 mm to 0.03 mm.

[0015] In one embodiment of the present invention, the cutting step can further include forming an outline contour cutting line that penetrates between the first surface and the second surface of the sheet-like label base material using the cutting blade to form the outline of the outer shape of the label.

[0016] In one embodiment of the present invention, the cutting step can further include forming, by the cutting blade, at least one locking portion cut line that penetrates between the first surface and the second surface of the sheet-like label base material, in order to define at least one locking portion in the sheet-like label base material to prevent the label from detaching from the neck of the container.

[0017] In one embodiment of the present invention, the hollowing step can include removing an inner portion of the label substrate surrounded by the outline of the insertion hole of the label from the sheet-like label substrate by punching with a cylinder or spraying with an air nozzle.

[0018] In one embodiment of the present invention, when the sheet-like label substrate is made of paper, the method of the present invention can be suitably applied. [Effects of the Invention]

[0019] According to the label manufacturing method of the present invention, even without using a support substrate other than the label substrate, waste material from the insertion hole does not fall out during label manufacturing, and waste material from the insertion hole is prevented from getting mixed into the automatic loading device, thereby improving the operating rate of the label manufacturing device and the automatic loading device and reducing the risk of breakdown. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a schematic diagram illustrating the manufacturing steps in one embodiment of the label manufacturing method of the present invention. [Figure 2] FIG. 2 is a plan view schematically showing an example of a sheet-like label substrate used in one embodiment of the label manufacturing method of the present invention. [Figure 3]Figure 3(A) is a schematic diagram for explaining an example of a cutting process in one embodiment of the label manufacturing method of the present invention, Figure 3(B) is a partial schematic diagram showing a cross section of a punch blade in one embodiment of the label manufacturing method of the present invention, Figure 3(C) is a schematic diagram showing a cross section of the outline of an insertion hole, partial temporary connection points, and outline contour cutting lines in one embodiment of the label manufacturing method of the present invention, and Figure 3(D) is a schematic diagram showing a plan view of the outline of an insertion hole and outline contour cutting lines in one embodiment of the label manufacturing method of the present invention. [Figure 4] FIG. 4 is a plan view schematically showing an example of a label to be applied in one embodiment of the label manufacturing method of the present invention. [Figure 5] FIG. 5 is a schematic diagram illustrating an example of the hollowing step in one embodiment of the label manufacturing method of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Next, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments, and it should be understood that appropriate design changes, improvements, etc. may be made based on the ordinary knowledge of those skilled in the art without departing from the spirit of the present invention. Note that the dimensions, scales, angles, etc. in the drawings illustrating each embodiment of the present invention are shown for convenience to aid understanding, and do not necessarily represent actual dimensions, scales, angles, etc.

[0022] Figure 1 is a schematic diagram illustrating the manufacturing steps in one embodiment of the label manufacturing method of the present invention. As shown in Figure 1, in one embodiment, the label manufacturing method of the present invention is a method for manufacturing a label 12 having an insertion hole 121 for attachment to the neck of a container, and includes a cutting step 3 for forming an outline 331 of the insertion hole 121 of the label 12 in a sheet-like label substrate 11 having a first surface 11a and a second surface 11b opposite to the first surface 11a, and a hollowing step 4 for removing a portion 122 of the label substrate 11 inside the outline 331 of the insertion hole 121 of the label 12 (hereinafter also referred to as "removed waste material 122") from the sheet-like label substrate 11. Furthermore, in this embodiment, before the cutting process 3, a sheet supply process 1 can be carried out in which multiple sheet-like label substrates 11 are placed on a loading table and the sheet-like label substrates 11 are fed out one by one from the stack of multiple sheet-like label substrates 11, and a conveying process 2 can be carried out in which the sheet-like label substrates 11 fed out from the sheet supply process 1 are conveyed to a predetermined position by a conveying belt, and after the hollowing process 4, a waste material removal process 5 can be carried out in which the removed waste material 123 other than the labels 12 from the sheet-like label substrate 11 is removed, and a label recovery process 6 can be carried out in which the labels 12 are recovered.

[0023] In this embodiment, the sheet-like label substrate 11 is essentially a single-layer sheet, but in other embodiments, a multi-layer structure can also be used. The material of the sheet-like label substrate 11 is not particularly limited, and any material usable for the label 12 may be used. Suitable materials for the sheet-like label substrate 11 include paper, synthetic paper, polyolefins such as PP (polyethylene) and PE (polyester), polyesters such as PET (polyethylene terephthalate), and rigid resin sheets such as PS (polystyrene) and PA (polyamide). The thickness of the sheet-like label substrate 11 is not particularly limited, but is preferably 50 μm or more from the viewpoint of strength, more preferably 150 μm or more, and even more preferably 170 μm or more. From the viewpoints of cost and ease of handling, the thickness of the sheet-like label substrate 11 is preferably 300 μm or less, more preferably 250 μm or less, and even more preferably 230 μm or less. The sheet-like label base material 11 does not necessarily have to be a single-layer sheet made of one type of material, but may be a laminate of sheets made of two or more types of material. Even in this case, the laminated sheets should be used as the sheet-like label base material 11 as a substantially single layer.

[0024] If necessary, one or both sides of the sheet-like label substrate 11 may be printed with images, text, or the like to convey information (to consumers, etc.). Examples of printing methods include lithographic printing (offset printing, etc.), intaglio printing (engraved intaglio printing, gravure printing, etc.), stencil printing (silkscreen printing, etc.), and digital printing (IJP, dry toner, wet toner, etc.). Examples of inks used for printing include inks in which a colorant is dispersed in a resin such as acrylic or cellulose. Examples of such colorants include inorganic pigments (titanium oxide, carbon black, copper, etc.), pearl pigments, and aluminum powder. The thickness of the printed layer of the images or text is not particularly limited as long as it does not impair the effects of the present invention, but it can be, for example, 0.5 μm or more, preferably 1 μm or more, and 10 μm or less, preferably 3 μm or less.

[0025] A varnish layer may also be applied to the sheet-like label substrate 11 or its printing layer to provide slipperiness and abrasion resistance. The material of the varnish layer can be appropriately selected taking into consideration the manufacturing method, slipperiness, gloss, light transmittance, and design. Examples of materials for the varnish layer include OP varnish, oil-based varnish, water-based varnish, UV-curable varnish, and other special varnishes. The thickness of the varnish layer is not particularly limited as long as it does not impair the effects of the present invention, but can be, for example, 0.5 μm or more, preferably 1 μm or more, and 10 μm or less, preferably 3 μm or less.

[0026] Figure 2 is a plan view schematically showing an example of a sheet-like label substrate 11 used in one embodiment of the label manufacturing method of the present invention. As shown in Figure 2, a plurality of labels 12 are imposed on one sheet-like label substrate 11 to enable high-speed mass production of labels. The dimensions of the sheet-like label substrate 11 and the number of labels imposed are not particularly limited, but in the embodiment of Figure 2, "5 x 4" labels 12 are imposed by printing in the "width direction x length direction" of the sheet-like label substrate 11.

[0027] In this embodiment, a plurality of sheet-like label substrates 11 are placed on a placing table, and a sheet supplying step 1 is carried out in which the sheet-like label substrates 11 are fed one by one from a stack of a plurality of sheet-like label substrates 11. For example, the sheet supplying step 1 can be carried out using a sheet feeder device that uses air to suck the topmost label substrate 11 from the stack of sheet-like label substrates 11 set on the placing table and feeds it to a conveyor belt.

[0028] In this embodiment, a conveying process 2 is carried out in which the sheet-shaped label substrate 11 fed from the sheet supplying process 1 is conveyed to a predetermined position by a conveying belt. The sheet-shaped label substrate 11 fed from the sheet supplying process 1 is sent to a cutting process 3 by the conveying belt.

[0029] As described above, by carrying out the sheet supplying process 1 and the conveying process 2, the sheet-like label substrate 11 can be continuously and quickly fed to the cutting process 3, enabling high-speed production of large quantities of labels. However, in other embodiments of the present invention, the sheet-like label substrate 11 can also be fed to the cutting process 3 by any other method.

[0030] In this embodiment, a cutting step 3 is performed on a sheet-like label substrate 11 having a first surface 11a and a second surface 11b opposite to the first surface 11a, to form an outline 331 of an insertion hole 121 (see FIGS. 4 and 5 ) for a label 12. In the cutting step 3, an insertion hole outline cut line is formed that penetrates between the first surface 11a and the second surface 11b of the label substrate 11, excluding partial temporary connection points P1 to P4, to form the outline 331 of the insertion hole 121 for the label 12. The reason for providing the temporary connection points P1 to P4 is to prevent the portion 122 of the label substrate 11 (removed waste material) surrounded by the outline 331 of the insertion hole 121 from falling off during conveyance, taking into consideration that the cutting step 3, which forms the cut line in the insertion hole 121, and the hollowing step 4, which removes the portion 122 of the label substrate 11 inside the outline 331 of the insertion hole 121, are usually performed at different positions. If the removed waste material 122 falls off in the cutting step 3, the removed waste material 122 will accumulate inside the device and come into contact with the sheet being conveyed, which may cause a jam inside the device.

[0031] Therefore, the length of each partial temporary connection (length along the cut line) is preferably 0.3 mm or more, more preferably 0.3 mm to 0.65 mm, and even more preferably 0.3 mm to 0.6 mm. If the length is less than 0.3 mm, the temporary connection may break during transportation, and the waste material 122 may fall off or become mixed in during the manufacturing process, resulting in product defects or production line stoppages. On the other hand, if the length is greater than 0.65 mm, the waste material 122 from the insertion hole 121 may not be properly separated from the sheet-like label substrate 11 and may remain on the label 12, which may result in improper insertion or breakage of the label 12 when the label 12 is attached to the neck of a container by an automatic attachment device.

[0032] In this embodiment, a total of four partial temporary connection points P1 to P4 are provided, but in other embodiments of the present invention, fewer (e.g., 1 to 3) or more (e.g., 5 to 20) partial temporary connection points may be provided. When there are two or more partial temporary connection points, the distance between these points is not particularly limited, but it is preferable to arrange them at equal intervals.

[0033] The method for forming the insertion holes 121 for the labels 12 in the sheet-like label substrate 11 is not particularly limited, and for example, a Vic blade, a Pinnacle (registered trademark) blade, a mold, or a cutting die can be used, and cutting methods using machines such as laser light or a machining center can also be used.

[0034] In this embodiment, in the cutting process 3, the sheet-like label substrate 11 is supplied between a pair of rolls (31, 32) in which a punching blade 33 such as a pinnacle blade is provided on the outer periphery of at least one of the rolls 31, and the punching blade 33 forms an insertion hole contour cut line that penetrates between the first surface 11a and the second surface 11b of the label substrate 11 except for partial temporary connection points (P1 to P4) to form the contour 331 of the insertion hole 121.

[0035] FIG. 3 is a schematic diagram illustrating an example of the cutting step 3 in one embodiment of the label manufacturing method of the present invention. FIG. 3(A) shows a state in which a sheet-like label substrate 11 is supplied between a pair of rolls (31, 32) each having a punching blade 33 attached to the outer periphery of the roll 31. FIG. 3(B) is a partial schematic diagram illustrating a cross section of the punching blade 33 attached to the outer periphery of the roll 31. The punching blade 33 has a first portion with a blade height d1 that penetrates between the first surface 11a and the second surface 11b of the sheet-like label substrate 11 to form the contour 331 of the insertion hole 121. Furthermore, the punching blade 33 may not be provided at the portions of the roll 31 corresponding to the partial temporary splicing portions (P1-P4) so ​​that the thickness of the partial temporary splicing portions (P1-P4) is the same as that of the sheet-like label substrate 11. Alternatively, a second portion of the punching blade 33 with a blade height d2 that forms the partial temporary splicing portions (P1-P4) may be provided so that the thickness of the partial temporary splicing portions (P1-P4) is thinner than that of the sheet-like label substrate 11.

[0036] The advantages of providing the second portion are as follows. Specifically, the partial temporary connection locations (P1-P4) do not require any special cuts and may be the same thickness as the sheet-like label substrate 11. However, when a paper substrate is used as the sheet-like label substrate 11, paper fibers are typically 20 μm to 100 μm thick. Therefore, if a large amount of thick fibers are present at the partial temporary connection locations, the removal waste material 122 from the insertion hole 121 may be prevented from being separated from the sheet-like label substrate 11. This may remain on the label 12, potentially causing a label 12 to be improperly attached to the neck of a container such as a vial or bottle using an automatic attachment device. On the other hand, if the partial temporary connection locations are not provided, the removal waste material 122 may fall off during the manufacturing process and get mixed into the manufacturing line, potentially resulting in defective products or the shutdown of the manufacturing line. Therefore, it is preferable to form the partial temporary connection locations (P1-P4) by half-cutting the sheet-like label substrate 11. By forming partial temporary connection points (P1 to P4) by half-cutting the sheet-like label base material 11 along the contour 331 of the insertion hole 121, some of the paper fibers are cut, which makes it possible to easily remove the removal waste material 122 by punching with a cylinder or spraying with an air nozzle. Therefore, preferably, the sheet-like label base material 11 is half-cut at the second part of the cutting blade 33 at blade height d2 so that the thickness of the partial temporary connection points is thinner than the thickness of the sheet-like label base material 11 as a whole.

[0037] The punching blade 33 preferably has a blade height d2 of a second portion that partially forms the temporary connection points (P1 to P4) shorter than the blade height d1 of a first portion that forms the outline 331 of the insertion hole 121 of the label 12, and the difference in blade height between the first and second portions is preferably 0.01 mm or more, and more preferably 0.03 mm or less, and more preferably 0.02 mm or less. Note that in this embodiment, both the first and second portions are treated as part of the punching blade 33 for convenience, but the first and second portions do not necessarily have to be physically integrated.

[0038] In this embodiment, in the cutting step 3, when the sheet-like label substrate 11 passes between the pair of rolls (31, 32), a punch blade can be used to form an outline contour cut line that penetrates between the first surface 11a and the second surface 11b of the sheet-like label substrate 11 to form the outline contour 332 of the label 12. FIG. 3(C) is a cross-sectional schematic diagram of the outline 331 of the insertion hole 121 of the label 12, the temporary splicing points (P1 to P4), and the outline contour cut line of the outline contour 332 of the label 12 in one embodiment of the label manufacturing method of the present invention. FIG. 3(D) is a planar schematic diagram of the outline 331 of the insertion hole 121 of the label 12 and the outline contour cut line in one embodiment of the label manufacturing method of the present invention. The cut lines of the temporary splicing points (P1 to P4) are formed by half-cutting the sheet-like label substrate 11, leaving a depth of 0.01 mm to 0.03 mm, preferably 0.01 mm to 0.02 mm. If the half-cut portion is thinner than 0.01 mm, there is a risk that the removed waste material 122 will fall off during transport of the sheet-like label base material 11. On the other hand, if the thickness is thicker than 0.03 mm, there are cases in which the removed waste material 122 cannot be sufficiently removed when forming the insertion hole 121 by removing the inner portion 122 of the label base material 11 surrounded by the outline 331 of the insertion hole 121 of the label 12 from the sheet-like label base material 11 by punching with a cylinder or spraying with an air nozzle.

[0039] In this embodiment, in the cutting step 3, it is preferable to form at least one locking portion cut line penetrating between the first surface 11a and the second surface 11b of the sheet-like label substrate 11 by the punch blade 33 in order to define at least one locking portion on the sheet-like label substrate 11 to prevent the label 12 from separating from the neck of the container as the sheet-like label substrate 11 passes between the pair of rolls (31, 32). FIG. 4 is a plan view schematically showing an example in which locking portion cut lines (211, 212, 221, 222) are provided to define locking portions (231, 232) on the label 12 formed on the sheet-like label substrate 11. Note that although the temporary connection points (P1 to P4) appear to have no width in FIG. 4, this is because the width of the cut line of the outline 331 of the insertion hole 121 is narrow. In reality, the temporary connection points (P1 to P4) are present in the gap formed by the outline 331 of the insertion hole 121.

[0040] The sheet-like label substrate 11, on which the outline 331 of the insertion hole 121, and optionally the outer contour cut line and the locking portion cut line, have been formed in the cutting step 3, is sent by a conveyor belt to the hollowing step 4, where an inner portion 122 of the label substrate 11 surrounded by the outline 331 of the insertion hole 121 of the label 12 is removed from the sheet-like label substrate 11. The conveyor belt may include a pair of upper and lower belt means that convey the labels 12 by sandwiching both side edges of each label 12 imposed on the sheet-like label substrate 11 between the pair of belts, thereby preventing the labels 12 from shifting as they are conveyed from the sheet-like label substrate 11 on which the cut lines have been formed, and also, as will be described later, allows the inner portion 122 of the label substrate 11 surrounded by the outline 331 of the insertion hole 121 of the label 12 to be removed below the conveyor belt.

[0041] FIG. 5 is a schematic diagram illustrating an example of the punching step 4 in one embodiment of the label manufacturing method of the present invention. The punching step 4 is a step of removing a portion 122 of the label substrate 11 inside the outline 331 of the insertion hole 121 of the label 12 from the sheet-like label substrate 11 by punching with a cylinder or spraying with an air nozzle. In FIG. 5(A), in order to remove the portion 122 of the label substrate 11 inside the outline 331 of the insertion hole 121 of the label 12 from the sheet-like label substrate 11 (pulling waste material), air is blown from an air nozzle 41 onto the insertion hole 121, and the pulling waste material 122 is separated and removed from the label 12. This allows the label 12 to be obtained with the insertion hole 121 formed ( FIG. 5(B)). In consideration of production efficiency, the pulling waste material 122 is preferably separated and removed by removing one widthwise row of the sheet-like label substrate 11 conveyed longitudinally by the conveyor belt at a time. Referring to Figure 2, for labels 12 that are attached to the sheet-like label substrate 11 in four rows in the longitudinal direction and five rows in the width direction, it is advisable to separate and remove the waste material 122 from the five labels 12 arranged in the width direction at once.

[0042] After the hollowing process 4, the removed waste material 123 other than the labels 12 can be removed from the sheet-like label substrate 11 in the waste material removal process 5, and the labels 12 can be recovered in the label recovery process 6. The recovered labels 12 can be attached to the necks of containers for soft drinks, alcoholic beverages, seasonings, etc. [Example]

[0043] The following examples are provided to provide a better understanding of the present invention and its advantages, but the present invention is not limited to these examples.

[0044] Example 1 High-quality paper (size: 545mm x 394mm, thickness: 170μm, grammage: approximately 160g / m 2) was prepared, and surface printing of images, text, etc. was carried out on one side (front side) of the high-quality paper using an offset printing device. UV ink for offset printing (process ink) manufactured by T&K Corporation was used as the printing ink, and a surface printing layer was formed with a thickness of approximately 1.5 μm. Then, FD Karton manufactured by Toyo Ink Co., Ltd. was used as the surface varnish, and a coating of approximately 2.0 μm was applied to the surface printing layer.

[0045] Similarly, a backside printing layer of a pattern, text, etc. was formed on the other side (backside) of the high-quality paper to a thickness of approximately 1.5 μm, and FLASHDRY manufactured by Toyo Ink Co., Ltd. was used as the backside varnish, which was coated on the backside printing layer to a thickness of approximately 2.0 μm, just like the front side, to produce the sheet-like label base material 11 shown in Figure 2.

[0046] In Example 1, the above-described sheet supplying process 1 to label collecting process 6 were carried out in order. A flexible pinnacle die was attached to the roll 31, and labels 12 with the slit lines shown in FIG. 4 were produced. The label size was 74 × 60 mm, and the insertion hole 121 was elliptical with a major axis of 30 mm and a minor axis of 10 mm. Four partial temporary connection points, each 0.5 mm long, were provided in the insertion hole 121, and all other slit lines were formed penetrating the sheet-like label base material 11. In addition, the slit lines 211 and 212 defining the locking portions 231 and 232 were 5 mm long, and the slit lines 221 and 222 were 40 mm long.

[0047] Example 2 The label 12 was produced in the same manner as in Example 1. However, the length of the partial temporary connection portion provided in the insertion hole 121 was set to 0.3 mm.

[0048] Example 3 The label 12 was produced in the same manner as in Example 1. However, the length of the partial temporary connection portion provided in the insertion hole 121 was set to 0.1 mm.

[0049] Example 4 The label 12 was produced in the same manner as in Example 1. However, the partial temporary connection portion provided in the insertion hole 121 was half-cut to leave about 0.01 mm.

[0050] Example 5 The label 12 was produced in the same manner as in Example 1. However, the partial temporary connection portion provided in the insertion hole 121 was half-cut to leave about 0.02 mm.

[0051] Example 6 The label 12 was produced in the same manner as in Example 1. However, the partial temporary connection portion provided in the insertion hole 121 was half-cut to leave about 0.005 mm.

[0052] Example 7 The label 12 was produced in the same manner as in Example 1. However, the partial temporary connection portion provided in the insertion hole 121 was half-cut to leave about 0.03 mm.

[0053] (evaluation) Transportability: Between the cutting process 3 and the hollowing process 4, it was confirmed whether the removal waste material 122 had fallen out of the insertion hole 121. Hole-removal property: In the hollow-removal process 4, air pressure of about 0.6 MPa was blown into the insertion hole 121 to check whether the hollow was sufficiently removed. Labeling ability: 500 labels 12 were stacked in the stacker part of an automatic attachment device (Toppan Infomedia Co., Ltd., product name "TLN-800"), and the labels 12 were fed out at a speed of 60 m / min. During labeling, it was checked whether any scrap material 122 was mixed in.

[0054] The evaluation results are shown in Table 1. The meanings of the symbols indicating the evaluation are as follows: ◎: Good product rate 99.5% or more ○: Good product rate: Less than 99.5% 99% or more △: Good product rate less than 99% 95% or more ×: Good product rate: Less than 95% 90% or more

[0055] [Table 1]

[0056] In all of the Examples, there were no major problems with transportability or punching, and labeling was also good. In Examples 1 and 2, slight punching defects were observed, and improperly punched labels 12 were mixed in during labeling. In Example 3, slight dropping of punched labels was observed during transport. In Example 6, slight dropping of punched labels was observed during transport. However, the yield rate of Examples 1, 2, 3, and 6 was good, at 95% or higher. [Explanation of symbols]

[0057] 1. Sheet supply process 11 Sheet-type label substrate 12 Labels 121 Insertion hole 122, 123 Extracted waste material 2. Transportation process 211, 212, 221, 222 Locking part notch lines 231, 232 Locking portion 3 Cutting process 31, 32 rolls 33 Punching blade 331 Insertion hole outline 332 Outline (outline contour cut line) 4. Hollowing out process 41 Air nozzle 5. Waste material removal process 6. Label collection process

Claims

1. A method for manufacturing a label having an insertion hole for attachment to a neck of a container, comprising: a cutting step of forming an outline of an insertion hole in a single-layer sheet-like label substrate having a first surface and a second surface opposite to the first surface; A hollowing step of removing a portion of the label base material inside the sheet-like label base material surrounded by the outline of the insertion hole. Including, the cutting step includes forming an insertion hole outline cutting line that penetrates between the first surface and the second surface of the label base except for a partial temporary connection portion to form an outline of the insertion hole; the hollowing step includes removing a portion of the label base material inside the label insertion hole by spraying air from an air nozzle, The method for manufacturing a label, wherein the partial temporary connection points are provided at two or more locations, and the length of each partial temporary connection point is 0.3 mm to 0.65 mm.

2. 2. The label manufacturing method according to claim 1, wherein the cutting step includes supplying the sheet-like label base material between a pair of rolls, at least one of which has a cutting blade on the outer periphery, and using the cutting blade to form an insertion hole contour cutting line that penetrates between the first surface and the second surface of the label base material, excluding a partial temporary connection location.

3. The label manufacturing method according to claim 2 , wherein the cutting step includes half-cutting the partial temporary connection portion with the punch blade so that the thickness of the partial temporary connection portion is thinner than the thickness of the label base material.

4. The label manufacturing method described in claim 3, wherein the blade height of the second portion of the punching blade that forms the partial temporary connection point is shorter than the blade height of the first portion that forms the outline of the insertion hole, and the difference in blade height between the first portion and the second portion is 0.01 mm to 0.03 mm.

5. The label manufacturing method according to any one of claims 2 to 4, wherein the cutting step further includes forming an outline contour cut line that penetrates between the first surface and the second surface of the sheet-like label base material using the punching blade to form the outline of the outer shape of the label.

6. The label manufacturing method according to any one of claims 2 to 5, wherein the cutting step further includes forming, by the punching blade, at least one locking portion cut line that penetrates between the first surface and the second surface of the sheet-like label base material, in order to define at least one locking portion in the sheet-like label base material to prevent the label from detaching from the neck portion of the container.

7. The label manufacturing method according to any one of claims 1 to 6, wherein the sheet-like label substrate is made of paper.

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