Bag-like article

Abstract

To provide a bag-like article capable of improving usability of reading individual identification information.SOLUTION: A bag-like article includes: a first member 10 having a base material 11, individual identification information 12A formed on a front surface 11a or a back surface 11b of the substrate 11 in a shape that can be read from the back surface 11b side, and a concealing layer 13 formed at least in a peripheral area of the individual identification information 12A; and a transparent or translucent second member 20 joined to a peripheral portion of the first member 10 in a state of being overlapped on the back surface side 11b of the base material 11. The modulation of the individual identification information 12A measured through the second member 20 is 35 or more.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a bag-shaped article.

Background Art

[0002] In recent years, for example, information for participating in a campaign is attached to a product, and the product purchaser is induced to a campaign site using the information for participating in the campaign. For example, as information for participating in a campaign, a code such as a QR code (registered trademark) including the URL information of the campaign site is attached to a product, and the product purchaser is induced to the campaign site by reading the code (individual identification information) with a mobile terminal or the like (see, for example, Patent Document 1).

[0003] However, in such a method, since a code including campaign information is attached to the surface of the product package, the code can be read before the product is purchased, and there is a case where it becomes possible to participate in a campaign using the code attached to an unpurchased product. In order to prevent this, a seal or the like for concealing the code is pasted, or the code is printed inside a double seal so that the code cannot be read from the outside of the product. However, in a product such as a PET bottle beverage, to which a label with product information is attached to the bottle, there is a problem that the manufacturing process of the product becomes complicated. In response to such a problem, Patent Document 2 discloses a technique for reading a code including campaign information from the back side of a label.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in a pouch (bag-shaped article) formed by overlapping film sheets to form a bag shape, a code is printed on the film sheet. For this reason, in order to read the code from the back side of the film sheet (label) as in Patent Document 2, it is necessary to cut out a part of the film sheet including the code, which causes a problem that usability becomes complicated.

[0006] In view of the above problems, an object of the present invention is to provide a bag-shaped article capable of improving the usability of reading individual identification information.

Means for Solving the Problems

[0007] One aspect of the present invention is a bag-shaped article including a first member having a base material, individual identification information formed on the front or back surface of the base material in a shape readable from the back surface side, and a concealment layer formed at least in a peripheral region of the individual identification information, and a transparent or translucent second member joined to a peripheral edge portion of the first member in a state of being overlapped on the back surface side of the base material. The modulation of the individual identification information measured through the second member is 35 or more.

Effects of the Invention

[0008] According to the present invention, it is possible to improve the usability of reading individual identification information.

Brief Description of the Drawings

[0009]

Figure 1

Modes for Carrying Out the Invention

[0010] Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1. As shown in FIG. 1, the bag-shaped article 1 of the present embodiment includes a first member 10 and a second member 20. Both the first member 10 and the second member 20 are formed in a flexible sheet shape. By joining the peripheral edges P of the first and second members 10 and 20 in a state where the first and second members 10 and 20 are overlapped, a bag-shaped article 1 having a space S (hereinafter referred to as the internal space S) inside is configured. Contents such as beverages (foods) can be accommodated in the internal space S of the bag-shaped article 1. Although not shown, the bag-shaped article 1 may have, for example, a stopper portion for taking the contents in and out of the internal space S.

[0011] The first member 10 has a first base material 11 (base material), a first printing layer 12, and a concealment layer 13. The first base material 11 is composed of a flexible film-like or sheet-like material. In FIG. 1, the first base material 11 is shown as one layer, but the first base material 11 may be configured by laminating, for example, a plurality of layers. The first base material 11 has a front surface 11a facing the outside of the bag-shaped article 1 and a back surface 11b facing the inside of the bag-shaped article 1 (the internal space S side). The back surface 11b of the first base material 11 faces the second member 20. The first base material 11 may be transparent or translucent, or may be opaque.

[0012] As the material constituting the transparent or translucent first base material 11, a material having transparency, the strength required for the bag-shaped article 1, and the formability of the first printing layer 12 is used. As the material constituting the transparent first base material 11, for example, a resin material is preferably used. Further, the translucent first base material 11 is preferably configured by printing on a transparent film made of, for example, a resin material. Note that, for the translucent first base material 11, for example, a translucent colored resin material mixed with a coloring agent or a translucent material may be used. Examples of the resin material constituting the first base material 11 may include polyethylene terephthalate (PET), polypropylene (PP), polyamide (Ny), and the like.

[0013] In addition, as the opaque first base material 11, a material having the strength required for the bag-shaped article 1 and the formability of the first printing layer 12 is used. As the opaque first base material 11, an opaque colored resin material obtained by mixing a coloring agent with the above-described resin material, a material such as paper, or the like is used. Specific examples of the paper (paper base material) constituting the first base material 11 include single-sided coated paper, pure white paper, India paper, and the like.

[0014] The first printing layer 12 is formed on the first base material 11. The first printing layer 12 includes the individual identification information 12A. The first printing layer 12 may include, for example, a pattern or the like other than the individual identification information 12A, or may include only the individual identification information 12A. The individual identification information 12A may be, for example, a one-dimensional code or a two-dimensional code such as a JAN code, a QR code (registered trademark), DataMatrix, or PDF417, or may be an image such as characters, a pattern, or a special code. Further, the individual identification information 12A is not limited to being formed by printing, and may be formed by, for example, embossing or attaching a label.

[0015] The individual identification information 12A has fine features (hereinafter referred to as feature points) in the edge linearity at the end of the individual identification information 12A, the contrast between the light color region and the dark color region, the difference in patterns (extra dark color region), partial printing blurring or defects, fine patterns due to the printing method, the aspect ratio of the outer shape, the arrangement position, and the size of the pattern. The feature points are unique features of each individual identification information 12A. By analyzing the individual identification information image generated by imaging the individual identification information 12A including the feature points, the individual identification of the individual identification information 12A can be performed. The individual identification of the individual identification information 12A using the feature points can be utilized, for example, for authenticity determination of purchased articles or campaign applications.

[0016] The first printing layer 12 including the above-described individual identification information 12A is formed on one surface of the first base material 11. In FIG. 1, the first printing layer 12 is formed on the entire back surface 11b of the first base material 11, and the individual identification information 12A is formed on a part of the first printing layer 12. By forming the individual identification information 12A on the back surface 11b of the first substrate 11, the individual identification information 12A can be read from the back surface 11b side of the first substrate 11. When the aforementioned first substrate 11 is transparent or translucent, the individual identification information 12A may be formed on the front surface 11a of the first substrate 11, and the individual identification information 12A formed on the front surface 11a of the first substrate 11 can be read from the back surface 11b side of the first substrate 11.

[0017] When the first substrate 11 is transparent or translucent, regardless of whether the individual identification information 12A is formed on either the front surface 11a or the back surface 11b of the first substrate 11, the individual identification information 12A can be read not only from the back surface 11b but also from the front surface 11a of the first substrate 11. Therefore, the individual identification information 12A appearing on the front surface 11a of the first substrate 11 can be used, for example, as a code to be read during product sales, and the individual identification information 12A appearing on the back surface 11b of the first substrate 11 can be used as information for individual identification processing.

[0018] The individual identification information 12A can be correctly read from the back surface 11b side by being formed on the front surface 11a or the back surface 11b of the first substrate 11. For example, when the individual identification information 12A is a JAN code, the shape of the JAN code as seen from the front surface 11a side of the first substrate 11 is set as the correct reading direction for the code for register reading, and the shape of the JAN code when seen from the back surface 11b side of the first substrate 11 is set as the correct reading direction for the individual identification information 12A having feature points. Note that the individual identification information 12A may be readable only from the back surface 11b side of the first substrate 11, for example.

[0019] The concealment layer 13 is formed overlapping the formation region of the individual identification information 12A in the first printing layer 12. In FIG. 1, the concealment layer 13 overlapping the first printing layer 12 is formed so as to cover the individual identification information 12A, but it may be formed at least in the peripheral region of the individual identification information 12A.

[0020] By forming the concealment layer 13 in the peripheral area of the individual identification information 12A, it has the function of concealing the color of the first base material 11 or, when the first base material 11 is a transparent color, the color of the contents housed in the bag-like article 1. The concealment layer 13 is formed in a color different from that of the individual identification information 12A in order to prevent the individual identification information 12A from being difficult to read due to the background color. The concealment layer 13 is preferably formed in a color with a large color difference or brightness difference from the individual identification information 12A. Thereby, the contrast between the concealment layer 13 and the individual identification information 12A becomes large, and the individual identification information 12A becomes easier to read, that is, the reading accuracy of the individual identification information 12A is improved. For example, when the individual identification information 12A is black, the concealment layer 13 is formed in white.

[0021] In FIG. 1, the concealment layer 13 is also formed on the individual identification information 12A. Therefore, the concealment layer 13 is formed to a thickness that allows the shape of the individual identification information 12A to be readable. In order to make the shape of the individual identification information 12A covered by the concealment layer 13 readable, for example, it is preferable to set the transmittance of the concealment layer 13 to 10% or more, or the thickness of the concealment layer 13 covering the individual identification information 12A to 1 μm or less. Thereby, the shape of the individual identification information 12A can be read through the concealment layer 13, and the individual identification information 12A can also be individually identified by extracting feature points. The concealment layer 13 may be formed, for example, so as to overlap the entire first printing layer 12. In this case, the concealment layer 13 also serves as a coloring layer.

[0022] In FIG. 1, the first printing layer 12 (particularly the individual identification information 12A) and the concealment layer 13 are sequentially formed on the back surface 11b of the first base material 11. Note that, on the back surface 11b of the first base material 11, for example, the concealment layer 13 and the first printing layer 12 (particularly the individual identification information 12A) may be sequentially formed. Also, in FIG. 1, since the individual identification information 12A is formed on the back surface 11b side of the first base material 11, the concealment layer 13 is also formed on the back surface 11b side of the first base material 11. Note that, when the individual identification information 12A is formed on the front surface 11a side of the first base material 11, the concealment layer 13 may also be formed on the front surface 11a side of the first base material 11.

[0023] The first member 10 of the present embodiment further has a first heat-sealing layer 14 for joining with the second member 20. The first heat-sealing layer 14 is formed on the back surface 11b side of the first base material 11. The first heat-sealing layer 14 may be laminated on the back surface 11b side of the first base material 11 via an adhesive (not shown), or may be formed on the back surface 11b side of the first base material 11 by coating.

[0024] In FIG. 1, a first printing layer 12 is formed on the entire back surface 11b of the first base material 11, and a concealing layer 13 is formed by overlapping a part of the first printing layer 12. Also, the first heat-sealing layer 14 is formed on the entire back surface 11b side of the first base material 11. For this reason, the first heat-sealing layer 14 is laminated on a part of the first printing layer 12 and on the concealing layer 13. In FIG. 1, since it is simplified, the first printing layer 12 and the first heat-sealing layer 14 are positioned at intervals, but actually the first heat-sealing layer 14 contacts the first printing layer 12.

[0025] Also, in FIG. 1, the thickness of the portion of the first heat-sealing layer 14 located at the peripheral portion P of the first member 10 is thicker than the thickness of the other portions of the first heat-sealing layer 14. Note that the first heat-sealing layer 14 may be formed only on the peripheral portion P of the back surface 11b side of the first base material 11, for example. Examples of the material constituting the first heat-sealing layer 14 may include polyethylene (PE), ethylene-vinyl acetate copolymer (EVA), ethylene-vinyl alcohol copolymer resin (EVOH), and the like.

[0026] The second member 20 is transparent or translucent and is joined to the peripheral portion P of the first member 10 in a state of being overlapped on the back surface 11b side of the first base material 11. The total light transmittance (JIS K 7375) of the second member 20 is 55% or more. The second member 20 of the present embodiment has a second base material 21. The second base material 21 is composed of a flexible film-like or sheet-like material. In FIG. 1, the second base material 21 is shown as one layer, but the second base material 21 may be composed of, for example, a plurality of laminated layers. The second base material 21 has a front surface 21a facing the outside of the bag-shaped article 1 and a back surface 21b facing the inside (the internal space S side) of the bag-shaped article 1. The back surface 21b of the second base material 21 faces the back surface 11b of the first base material 11. The second base material 21 is transparent or translucent. The material constituting the transparent or translucent second base material 21 may be the same as the material constituting the transparent or translucent first base material 11. The second base material 21 may be made of the same material as the first base material 11, or may be made of a different material from the first base material 11, for example.

[0027] The second member 20 further has a second printing layer 22 formed on the second base material 21. The second printing layer 22 includes a pattern or the like formed by printing. The pattern or the like of the second printing layer 22 may be the same as, for example, the pattern or the like other than the individual identification information 12A in the first printing layer 12. The second printing layer 22 is formed on one surface of the second base material 21. In FIG. 1, the second printing layer 22 is formed on the entire back surface 21b of the second base material 21. Note that, for example, the individual identification information 12A may be formed on the front surface 21a of the second base material 21. The second member 20 may not have the second printing layer 22, for example.

[0028] The second member 20 further has a second heat seal layer 24 for joining with the first member 10. The second heat seal layer 24 is formed on the back surface 21b side of the second base material 21. The second heat seal layer 24 may be laminated on the back surface 21b side of the second base material 21 via an adhesive (not shown), or may be formed on the back surface 21b side of the second base material 21 by coating. In FIG. 1, the second printing layer 22 is formed on the entire back surface 21b of the second base material 21. Also, the second heat seal layer 24 is formed on the entire back surface 21b side of the second base material 21. For this reason, the second heat seal layer is laminated on the second printing layer 22.

[0029] In FIG. 1, the thickness of the portion of the second heat seal layer 24 located at the peripheral edge P of the second member 20 is thicker than the thickness of the other portions of the second heat seal layer 24. Note that the second heat seal layer 24 may be formed only at the peripheral edge P on the back surface 21b side of the second base material 21, for example. Specific examples of the material constituting the second heat seal layer 24 may be the same as the material constituting the first heat seal layer 14 described above. The second heat seal layer 24 may be made of the same material as the first heat seal layer 14, but may be made of a different material from the first heat seal layer 14, for example.

[0030] The bag-shaped article 1 of the present embodiment is configured by overlapping the first and second members 10 and 20 such that the first and second heat seal layers 14 and 24 face each other, and then heat-sealing the peripheral edges P of these first and second members 10 and 20. Note that the bag-shaped article 1 may be configured to include not only the first and second members 10 and 20 but also other members formed in a sheet shape having flexibility similar to that of the first and second members 10 and 20, that is, it may be configured by three or more sheet-shaped members.

[0031] In the bag-shaped article 1 of the present embodiment, the modulation of the individual identification information 12A measured through the second member 20 is 35 or more. Modulation is the ratio of the minimum edge contrast to the symbol contrast, and can be measured using a verification machine for one-dimensional codes conforming to JIS X 0521-1 and ISO / IEC 15426-2.

[0032] Also, in the bag-shaped article 1 of the present embodiment, the edge contrast of the individual identification information 12A measured through the second member 20 is 5 or more. Edge contrast is the difference between the reflectance in the bar (dark area) adjacent to the one-dimensional code and the reflectance in the space (light area) when the individual identification information 12A is a one-dimensional code. Edge contrast can be measured using a verification machine for one-dimensional codes conforming to JIS X 0521-1 and ISO / IEC 15426-2.

[0033] The numerical ranges of the above-described modulation and edge contrast need only be satisfied at least when there is no content in the internal space S of the bag-shaped article 1. When there is content in the internal space S of the bag-shaped article 1, the modulation and edge contrast of the individual identification information 12A measured from the second member 20 side can be outside the above-described numerical ranges.

[0034] As described above, in the bag-shaped article 1 of the present embodiment, the transparent or translucent second member 20 overlaps the back surface 11b side of the first member 10. And the modulation of the individual identification information 12A formed on the first member 10 and measured through the second member 20 is 35 or more. Thereby, individual identification of the individual identification information 12A can be performed based on the feature points included in the individual identification information image generated by imaging the individual identification information 12A from the back surface 11b side of the first member 10 through the second member 20. That is, individual identification of the individual identification information 12A can be performed without cutting out a part of the first member 10 including the individual identification information 12A. Therefore, the usability of reading the individual identification information 12A can be improved.

[0035] Also, in the bag-shaped article 1 of the present embodiment, when the individual identification information 12A is a one-dimensional code, the edge contrast of the individual identification information 12A measured through the second member 20 is 5 or more. Also by this, it becomes possible to perform individual identification of the individual identification information 12A without cutting out a part of the first member 10 including the individual identification information 12A. Therefore, the usability of reading the individual identification information 12A can be improved.

[0036] Furthermore, in the bag-shaped article 1 of the present embodiment, the total light transmittance (JIS K 7375) of the second member 20 is 55% or more. Also by this, it becomes possible to perform individual identification of the individual identification information 12A without cutting out a part of the first member 10 including the individual identification information 12A. Therefore, the usability of reading the individual identification information 12A can be improved.

[0037] Further, in the bag-shaped article 1 of the present embodiment, when the content exists in the internal space S, the modulation and edge contrast can be set outside the above-described numerical ranges. Thereby, it is possible to prevent the reading of the individual identification information 12A attached to the un-purchased product. After purchasing the product, by discharging the content from the inside of the bag-shaped article 1, the individual identification information 12A can be identified based on the feature points included in the individual identification information image generated by imaging the individual identification information 12A from the back surface 11b side of the first member 10 through the second member 20.

[0038] 〔Experimental Example〕 Hereinafter, the bag-shaped article according to the present invention will be further described using experimental examples (Examples 1 and 2, Comparative Example 1). The technical scope of the present invention is not limited by the specific contents of the experimental examples at all.

[0039] 〔Example 1〕 In the bag-shaped article of Example 1, Lumirror S10 (manufactured by Toray Industries, Inc.) with a thickness of 25 μm was adopted as the first base material of the first member. On the back surface of the first base material, a first printing layer including a one-dimensional code as individual identification information and a concealment layer were formed in this order by printing using Lion Alpha (manufactured by Toyo Ink Co., Ltd.). Then, a first heat seal layer made of SE620 (manufactured by Tamapoly Co., Ltd.) was bonded via an adhesive layer on the concealment layer and the first printing layer to obtain the first member. Further, in the bag-shaped article of Example 1, Lumirror S10 (manufactured by Toray Industries, Inc.) with a thickness of 25 μm was adopted as the second base material of the second member. On the back surface of the second base material, a second printing layer was formed by printing using Lion Alpha (manufactured by Toyo Ink Co., Ltd.) so that the total light transmittance (JIS K 7375) of the second member was 60%. Also, a second heat seal layer made of SE620 (manufactured by Tamapoly Co., Ltd.) was bonded via an adhesive layer on the second printing layer to obtain the second member. Finally, the bag-shaped article of Example 1 was produced by thermally bonding the peripheral portions of these first and second members.

[0040] 〔Example 2〕 The bag-shaped article of Example 2 was produced in the same manner as the bag-shaped article of Example 1, except that the second printing layer of the second member was absent.

[0041] [Comparative Example 1] The bag-shaped article of Comparative Example 1 was produced in the same manner as the bag-shaped article of Example 1, except that the second printing layer was formed so that the total light transmittance (JIS K 7375) of the second member was 47%.

[0042] Regarding the bag-shaped articles of Example 1, Example 2, and Comparative Example 1, the edge contrast and modulation of the one-dimensional code through the second member were measured using a verification machine for one-dimensional codes conforming to ISO / IEC 15426-2. Also, the total light transmittance (JIS K 7375) of the second member was measured for the bag-shaped articles of Example 1, Example 2, and Comparative Example 1. Furthermore, it was determined whether or not the feature points included in the individual identification information could be extracted, that is, whether or not the individual identification of the individual identification information was possible. The determination result when the feature points could be extracted was indicated as "○", and the determination result when the feature points could not be extracted was indicated as "×". Table 1 shows the measured values of the edge contrast, modulation, total light transmittance of the second member, and the determination results of feature point extraction for the bag-shaped articles of Example 1, Example 2, and Comparative Example 1.

[0043]

Table 1

[0044] As shown in Table 1, in Comparative Example 1, the feature points included in the individual identification information could not be extracted. This result is considered to be due to the edge contrast being less than 5, or the modulation being less than 35, or the total light transmittance of the second member being less than 55% in Comparative Example 1.

[0045] On the one hand, in Examples 1 and 2, the feature points included in the individual identification information could be extracted. This result is considered to be due to the edge contrast being 5 or more, or the modulation being 35 or more, or the total light transmittance of the second member being 55% or more, in Examples 1 and 2.

[0046] From the above, in a bag-shaped article, by setting the edge contrast measured through the second member to 5 or more, or setting the modulation measured through the second member to 35 or more, or setting the total light transmittance of the second member to 55% or more, it has become clear that individual identification of the individual identification information can be performed without cutting out a part of the first member including the individual identification information.

[0047] As described above, the embodiments according to the present invention have been described. However, the present invention is not limited to the above embodiments and can be appropriately modified without departing from the gist thereof.

Explanation of Reference Numerals

[0048] 1 Bag-shaped article 10 First member 11 First base material (base material) 11a Surface 11b Back surface 12A Individual identification information 13 Concealing layer 20 Second member P Peripheral portion

Claims

1. A base material, Individual identification information formed in a shape that can be read from the back side of the base material on the front or back surface of the base material, and, A first member having a concealment layer formed at least in the peripheral region of the individual identification information, A transparent or translucent second member joined to the peripheral edge of the first member in a state of being overlapped on the back side of the base material, comprising: A bag-shaped article in which the modulation of the individual identification information measured through the second member is 35 or more.

2. The individual identification information is a one-dimensional code, The bag-shaped article according to claim 1, wherein the edge contrast of the individual identification information measured through the second member is 5 or more.

3. The bag-shaped article according to claim 1 or claim 2, wherein the total light transmittance (JIS K 7375) of the second member is 55% or more.

Images