Tape, zipper tape, container with tape, and manufacturing method thereof

Abstract

Provided is a tape including, in a cross-section shape, a first and a second portion which are configured to be at least partially in opposition. In the first portion, thick parts are formed on a first and a third region from among a first, second, and third region of the tape in the width direction, first and second thin parts are formed on both end parts of the second region in the width direction positioned between the first region and the third region, and at least one intermediate part is formed between the first thin part and the second thin part. In the second portion, thick parts which extend beyond the end parts of the second region in the width direction are formed respectively on the first and the third regions, and at least one third thin part is formed in the second region so as to oppose the intermediate part.

Description

[Technical Field]

[0001] The present invention relates to a tape, a zipper tape, a container with tape, and a method for producing the same. [Background technology]

[0002] As a packaging material for packaging various items such as food, medicine, medical supplies, miscellaneous goods, etc., a zipper tape-equipped packaging bag is used, which has a pair of strip-shaped zipper tapes formed of male and female members that interlock with each other at the opening of the bag, and this interlocking state can be opened and closed freely. Such a zipper tape-equipped packaging bag is sealed by sealing the upper part of the zipper tape, and can be opened by tearing the film of the bag body using notches formed on both sides of the packaging bag as a starting point.

[0003] As an example of such technology, Patent Document 1 (for example, Figure 10) describes a technology that uses thin and thick sections provided at the base of the zipper tape to stably induce tearing of the film of the bag body. By providing thin sections at different positions on the zipper tape that is joined to both sides of the bag body, the ends of the zipper tape after the film is torn are uneven, making it easy to widen the opening by hooking a finger or the like on the end of the zipper tape when removing the contents from the bag body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-104334 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the case of the technology described in Patent Document 1 above, depending on the direction in which the force tearing the bag body acts, the end of the zipper tape after opening may or may not be uneven.

[0006] Therefore, the present invention aims to provide a tape, zipper tape, container with tape, and a method for manufacturing the same that can more reliably make the shape of the end uneven after opening regardless of the direction in which the tearing force acts. [Means for solving the problem]

[0007] [1] A tape having a cross-sectional shape including first and second portions configured to at least partially face each other, wherein in the first portion, thick portions are formed in the first and third regions of the first, second, and third regions in the width direction of the tape, and first and second thin portions are formed at both widthwise ends of a second region located between the first and third regions, and at least one intermediate portion is formed between the first thin portion and the second thin portion; and in the second portion, thick portions are formed in the first and third regions, respectively, extending beyond the widthwise ends of the second region, and at least one third thin portion is formed in the second region facing the intermediate portion. [2] The tape according to [1], wherein the middle portion is formed with a thickness corresponding to the thick portion. [3] The tape according to [1] or [2], wherein the first thin portion, the second thin portion, and the third thin portion are formed with a thickness of 10 μm or more and 200 μm or less, and the thick portions of the first and third regions are formed with a thickness of 200 μm or more and 700 μm or less. [4] The tape according to any one of [1] to [3], wherein the first, second and third regions cover the entire tape. [5] A tape described in any one of [1] to [4], wherein the first portion and the second portion are connected at the widthwise end of the first region or the third region opposite the second region. [6] A zipper tape having, in its cross-section, first and second portions configured to at least partially oppose each other, wherein each of the first and second portions includes, in its cross-section, a base strip and an engaging portion protruding from the base strip and capable of engaging with each other; in the first portion, among first, second and third regions in the width direction of the zipper tape, a thick portion is formed in the first region and a thick portion continuous with the base strip is formed in the third region; in the second region located between the first and third regions, first and second thin portions are formed at both widthwise ends of the second region and at least one intermediate portion is formed between the first thin portion and the second thin portion; and in the second portion, each of the first and third regions includes a thick portion extending beyond the widthwise ends of the second region, and the second region includes at least one third thin portion opposing the intermediate portion. [7] The zipper tape according to [6], wherein the intermediate portion is formed to a thickness corresponding to the thick portion. [8] The zipper tape according to [6] or [7], wherein the first thin portion, the second thin portion, and the third thin portion are formed to a thickness of 10 μm or more and 200 μm or less, and the thick portions of the first and third regions are formed to a thickness of 200 μm or more and 700 μm or less. [9] The zipper tape according to any one of [6] to [8], wherein the first, second and third regions cover the entire area of ​​the zipper tape other than the base strip and the engagement portion.

[10] The zipper tape according to any one of [6] to [9], wherein the first portion and the second portion are connected to each other at a widthwise end of the first region opposite to the second region, or at a widthwise end of the base strip opposite to the third region.

[11] A tape-attached container comprising a container body having at least a first surface and a second surface facing each other, and the tape according to any one of [1] to [5] or the zipper tape according to any one of [6] to

[10] , in which at least a part of the first portion is joined to the first surface and at least a part of the second portion is joined to the second surface.

[12] A container with tape according to

[11] , in which the thick portion and intermediate portion of the first part are joined to the first surface, and the thick portion of the second part is joined to the second surface.

[13] A container with tape according to

[11] or

[12] , wherein the container body is bag-shaped.

[14] A container with tape according to any one of

[11] to

[13] , wherein a side seal portion is formed at both ends of the container body where the first surface and the second surface are joined, and a notch is formed at the longitudinal end of the tape or zipper tape that overlaps the side seal portion.

[15] A tape-attached container as described in

[14] , wherein the cutout formed in the first portion includes a tapered portion or a bulged portion directed toward the first thin-walled portion and the second thin-walled portion, and the cutout formed in the second portion includes a tapered portion or a bulged portion directed toward the third thin-walled portion.

[16] The cutout formed in the first portion includes a first bulge and a second bulge directed toward the first thin-walled portion and the second thin-walled portion, respectively;

[15] A tape-attached container according to

[15] , wherein the notch formed in the second portion includes a tapered portion directed toward the third thin-walled portion.

[17] A container with tape according to

[16] , wherein the first bulge protrudes more toward the longitudinal center of the tape or zipper tape than the second bulge.

[18] The notch formed in the first portion includes a first tapered portion and a second tapered portion directed toward the first thinned portion and the second thinned portion, respectively;

[15] A tape-attached container according to

[15] , wherein the notch formed in the second portion includes a tapered portion directed toward the third thin-walled portion.

[19] A tape-attached container according to

[14] , wherein the cutout formed in the first part includes a first tapered portion directed toward the first thin-walled portion and at least one oblique side or curved portion directed toward the first tapered portion, and the cutout formed in the second part includes a tapered portion or bulge portion directed toward the third thin-walled portion, and the at least one oblique side or curved portion crosses the third thin-walled portion when the first part and the second part are superimposed.

[20] A container with tape described in any one of

[15] to

[19] , wherein, in the longitudinal direction of the zipper tape, a first position where the tapered portion or bulging portion is connected to the first thin portion in the first part is different from a second position where the tapered portion or bulging portion is connected to the third thin portion in the second part.

[21] The container with tape according to

[20] , wherein the second position is closer to the longitudinal end of the zipper tape than the first position.

[22] The tape-attached container according to

[21] , wherein the distance between the first position and the second position is 2 mm or more and 50 mm or less.

[23] A method for manufacturing a container with tape described in any one of

[14] to

[22] , comprising the steps of forming a notch in the tape or zipper tape, joining the tape or zipper tape with the notch formed therein to a container body, and forming a side seal portion that crosses the notch in the container body to which the tape or zipper tape has been joined.

[0008] According to the above configuration, after the tape or zipper tape is attached to the bag body, whether a force is applied from the first side or the second side, the relationship is established in which the thin-walled portion formed on the side where the force is applied is positioned in the storage space relative to the thin-walled portion formed on the opposite side, so that the shape of the end after opening can be made uneven more reliably regardless of the direction in which the tearing force is applied. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a plan view of a tape-attached bag according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3A] 2 is a diagram showing a case where a force is applied from the first surface side in the example of FIG. 1. FIG. [Figure 3B] 2 is a diagram showing a case where a force is applied from the second surface side in the example of FIG. 1. FIG. [Figure 4] 5A to 5C are diagrams illustrating an example of a method for manufacturing a tape according to the first embodiment of the present invention. [Figure 5A]5A and 5B are diagrams showing examples of the shape of the notch in the example shown in FIG. 4. [Figure 5B] 5A and 5B are diagrams showing examples of the shape of the notch in the example shown in FIG. 4. [Figure 6] 1 is a cross-sectional view showing an example of a tape according to a first embodiment of the present invention. [Figure 7] FIG. 4 is a cross-sectional view showing a modified example of the first embodiment. [Figure 8] FIG. 4 is a cross-sectional view showing a modified example of the first embodiment. [Figure 9] FIG. 10 is a cross-sectional view showing another modified example of the first embodiment. [Figure 10] FIG. 10 is a plan view of a bag with a zipper tape according to a second embodiment of the present invention. [Figure 11] FIG. 11 is a cross-sectional view taken along line XI-XI in FIG. [Figure 12] FIG. 4 is a cross-sectional view showing an example of a zipper tape according to a second embodiment of the present invention. [Figure 13] FIG. 10 is a cross-sectional view showing another modified example of the second embodiment. [Figure 14] 10A and 10B are diagrams illustrating another example of a notch according to an embodiment of the present invention. [Figure 15] 10A and 10B are diagrams illustrating another example of a notch according to an embodiment of the present invention. [Figure 16] 10A and 10B are diagrams illustrating another example of a notch according to an embodiment of the present invention. [Figure 17] 10A and 10B are diagrams illustrating another example of a notch according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this specification and drawings, components having substantially the same functional configurations are designated by the same reference numerals, and redundant explanations will be omitted.

[0011] (First embodiment) Fig. 1 is a plan view of a tape-attached bag according to a first embodiment of the present invention, and Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. As shown, the tape-attached bag 100 includes a bag body 110 formed of a film and having a first surface 111A and a second surface 111B facing each other, and tape 120 joined to the first surface 111A and the second surface 111B of the bag body 110, respectively, to define one side of a storage space SP formed between the first surface 111A and the second surface 111B.

[0012] The bag body 110 is formed, for example, from a single-layer or multi-layer thermoplastic resin film. Specifically, the thermoplastic resin may be low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), or polypropylene (PP). PP may be homopolypropylene (HPP), random polypropylene (RPP), or block polypropylene (BPP). When the bag body 110 is formed from a multi-layer film, the outer substrate may be biaxially oriented polypropylene (OPP), biaxially oriented polyethylene terephthalate (OPET), or biaxially oriented nylon (ONy). These materials are not limited to fossil fuel-derived resins; they may be environmentally friendly bioplastics or mixtures of fossil fuel-derived resins and bioplastics. A preferred example of a bioplastic is biopolyethylene. The film forming the bag body 110 may also include a layer of a metal material such as aluminum or an inorganic material. For example, by forming the bag body 110 from a mono-material resin composition primarily composed of polyethylene, as with the tape 120 or zipper tape 220 described below, an environmentally friendly structure with excellent recyclability can be achieved.

[0013] In this embodiment, bag body 110 is formed by overlapping two sheets of film and joining them together at top seal portion 112, bottom seal portion 113, and side seal portion 114. However, in another embodiment, bag body 110 may be formed by folding back a single sheet of film at a portion corresponding to side seal portion 114. Also, bag body 110 may have a portion where the film is folded inward at a portion corresponding to bottom seal portion 113 or side seal portion 114, called a gusset. In this case, the gusset may be formed from the same film as first surface 111A or second surface 111B, or may be formed from a different film. Also, tape-attached bag 100 may be a standing pouch that can be placed upright by forming a gusset at the bottom.

[0014] 2, tape 120 is a long member whose cross-sectional shape includes first and second portions 120A and 120B facing each other. First portion 120A includes, in its cross-sectional shape, first thick portion 121A, second thick portion 122A, thin portions 123A and 123B, and intermediate portion 124. Second portion 120B includes, in its cross-sectional shape, first thick portion 121B, second thick portion 122B, and thin portion 123C. First thick portions 121A, 121B and second thick portions 122A, 122B do not necessarily have to have the same thickness, but thin portions 123A, 123B, 123C (hereinafter sometimes collectively referred to as thin portions 123) are formed thinner than both first thick portions 121A, 121B and second thick portions 122A, 122B (hereinafter sometimes collectively referred to as thick portions 121, 122). Intermediate portion 124 is formed thicker than thin portions 123A, 123B. The thickness relationship between intermediate portion 124 and thick portions 121A, 122A is not necessarily limited, but for example, when intermediate portion 124 is joined to first surface 111A together with thick portions 121A, 122A as in the illustrated example, intermediate portion 124 is preferably formed to have a thickness corresponding to thick portions 121A, 122A. Here, the corresponding thicknesses do not necessarily have to be exactly the same, but refer to thicknesses that are close enough to facilitate joining the thick portions 121A, 122A and the intermediate portion 124 to the same surface (first surface 111A), as in the illustrated example. Specifically, the thickness of the intermediate portion 124 is preferably within ±20% of the thickness of the thick portions 121A, 122A, more preferably within ±10%, and even more preferably the same thickness. Note that if the thicknesses of the thick portions 121A, 122A are different, the thickness of the intermediate portion 124 is preferably within the above-mentioned range relative to the average of these thicknesses. By setting the thickness of the intermediate portion 124 within the above-mentioned range, the intermediate portion 124 can be more reliably joined to the first surface 111A. The same applies to the intermediate portion formed in the second part 120B in the example described below.

[0015] The first portion 120A is joined to the first surface 111A of the bag body 110 at the first thick portion 121A and the second thick portion 122A. The second portion 120B is joined to the second surface 111B of the bag body 110 at the first thick portion 121B and the second thick portion 122B. In the illustrated example, the first portion 120A is also joined to the first surface 111A at the intermediate portion 124, but the intermediate portion 124 does not have to be joined to the first surface 111A. From the perspective of facilitating alignment during manufacturing, it is advantageous to join the intermediate portion 124 to the first surface 111A. Furthermore, first thick portions 121A, 121B and second thick portions 122A, 122B do not have to be bonded to first surface 111A or second surface 111B over the entire surface, and for example, portions adjacent to thin portions 123A, 123B, 123C may not be bonded to first surface 111A or second surface 111B. In this case, portions having a thickness intermediate between thick portions 121, 122 and thin portion 123 may be provided between thick portions 121, 122 and thin portion 123.

[0016] The tape 120 described above is formed by extrusion molding of, for example, a polyolefin resin. More specifically, the tape 120 may be formed of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), or polypropylene (PP). PP may be homopolypropylene (HPP), random polypropylene (RPP), or block polypropylene (BPP). These are not limited to fossil fuel-derived resins; they may be environmentally friendly bioplastics or mixtures of fossil fuel-derived resins and bioplastics. A preferred example of bioplastic is biopolyethylene. Known additives, such as stabilizers, antioxidants, lubricants, antistatic agents, or colorants, may be added to the material of the tape 120 as needed.

[0017] The tape 120 may be made of a mono-material resin composition primarily composed of polyethylene. In this case, the entire tape 120, i.e., the first thick portions 121A and 121B, the second thick portions 122A and 122B, the thin portions 123A, 123B, and 123C, and the intermediate portion 124, are all formed of a resin composition primarily composed of polyethylene. Here, the "major component" refers to a component that occupies a predetermined percentage or more of the resin composition, typically at a content of 50% by mass or more, preferably 70% by mass or more, more preferably 90% by mass or more, even more preferably 95% by mass or more, particularly preferably 98% by mass or more, and most preferably 100%. However, even when the content of the major component is 100%, the inclusion of additives or impurities is permitted. The major component can be identified, for example, by IR analysis. By making the tape 120 of a mono-material resin composition primarily composed of polyethylene, an environmentally friendly structure with excellent recyclability can be achieved. Furthermore, by using biopolyethylene as the polyethylene, an environmentally friendly structure with excellent recyclability can be achieved.

[0018] As shown in FIG. 2, a first region R1, a second region R2, and a third region R3 are defined in the width direction of the tape 120. These regions are common to the first portion 120A and the second portion 120B of the tape 120 when the first portion 120A and the second portion 120B face each other. The second region R2 is located between the first region R1 and the third region R3. The first region R1, the second region R2, and the third region R3 may cover the entire tape 120 in the width direction, as in the example shown in FIG. 2, or may not cover the entire tape 120, as in another example described below. In the first portion 120A, a first thick portion 121A and a second thick portion 122A are formed in the first region R1 and the third region R3, respectively. A thin portion 123A and a thin portion 123B are formed at both widthwise ends of the second region R2, respectively. An intermediate portion 124 is formed between the thin portion 123A and the thin portion 123B. Meanwhile, in the second portion 120B, the first thick portion 121B and the second thick portion 122B formed in the first region R1 and the third region R3, respectively, extend beyond the widthwise ends of the second region R2. That is, in the second portion 120B, the first thick portion 121B and the second thick portion 122B are formed so as to extend from the first region R1 or the third region R3 to a part of the second region R2, respectively. The thin portion 123C formed in the second region R2 of the second portion 120B faces the middle portion 124 of the first portion 120A.

[0019] As described above, in this embodiment, in first portion 120A, thin portions 123A and 123B are formed at both widthwise ends of second region R2, whereas in second portion 120B, first thick portion 121B and second thick portion 122B extend beyond the widthwise ends of second region R2, so that thin portions 123A and 123B do not face the thin portions of second portion 120B. Thin portion 123C formed in second portion 120B does not face between thin portions 123A and 123B of first portion 120A, but faces intermediate portion 124 formed between the thin portions. As a result, when the first part 120A and the second part 120B face each other, the thin-walled parts 123A to 123C are arranged alternately in the width direction of the tape 120, specifically, from the top seal part 112 side, in the order of thin-walled part 123A, thin-walled part 123C, and thin-walled part 123B, without overlapping.

[0020] With the above-described configuration, in the tape-attached bag 100 according to this embodiment, for example, when a user tears and opens the bag body 110 starting from the notch 115 formed in the side seal portion 114 at the longitudinal end of the tape 120, the ends of the tape 120 and the bag body 110 after opening can be uneven. Specifically, for example, when a tearing force F acts on the bag body 110 from the first surface 111A side as shown in Fig. 3A, the thin-walled portion 123A at the first portion 120A of the tape 120 breaks, and the thin-walled portion 123C at the second portion 120B breaks, and the tearing of the bag body 110 is guided along the thin-walled portions 123A and 123C, resulting in the ends of the tape 120 and the bag body 110 after opening being uneven. As shown in Figure 3B, even when force F that tears bag body 110 acts from the second surface 111B side, thin-walled portion 123C breaks at second portion 120B of tape 120, and thin-walled portion 123B breaks at first portion 120A, and the tearing of bag body 110 is guided along thin-walled portions 123B and 123C, resulting in uneven edges of tape 120 and bag body 110 after opening.

[0021] According to the findings of the inventors, when a thin-walled portion formed on the opposite side to the thin-walled portion formed on the side where the force F that tears the bag body 110 acts (the first surface 111A side in the example of Figure 3A, and the second surface 111B side in the example of Figure 3B) is located on the storage space SP side, the end of the tape 120 after breaking is likely to become uneven. Therefore, for example, in the above example, if thin portion 123B is not formed in first portion 120A of tape 120, when force F is applied from the first surface 111A side as in the example shown in Figure 3A, thin portion 123A and thin portion 123C will break, resulting in an uneven edge of tape 120 after opening.However, when force F is applied from the second surface 111B side as in the example shown in Figure 3B, thin portion 123A is located closer to top seal portion 112 than thin portion 123C, so first portion 120A will break near middle portion 124 (note that if thin portion 123B is not formed, it is not called a middle portion) rather than thin portion 123A, and the edges of tape 120 and bag body 110 after opening may not be uneven.

[0022] In contrast, in this embodiment, whether a force is applied from the first surface 111A side or the second surface 111B side as described above, the thin-walled portion formed on the side where the force is applied is positioned on the storage space SP side relative to the thin-walled portion formed on the opposite side, so that the ends of tape 120 and bag body 110 can be more reliably made uneven after opening, regardless of the direction of force application. This makes it easier to widen the opening by hooking a finger or the like on the end of the tape when removing the contents from the bag body, as described above. In this case, to further facilitate widening the opening, ribs facing the inside of the bag body may be formed on the ends of each portion other than the thin-walled portion (thick portion or middle portion).

[0023] In this embodiment, the thin-walled portions 123A, 123B, and 123C may be thinner than the adjacent portions, i.e., the thick-walled portions 121 and 122 and the intermediate portion 124, but may be formed to a thickness of, for example, 200 μm or less so that they are easily broken by the above-mentioned force. The thickness of the thin-walled portions 123A, 123B, and 123C is preferably 150 μm or less, more preferably 120 μm or less, even more preferably 100 μm or less, and particularly preferably 80 μm or less. By setting the thickness within this range, the tensile strength can be reduced, making the thin-walled portions more easily breakable. The lower limit of the thickness of the thin-walled portions 123A, 123B, and 123C is not particularly limited, but is typically 10 μm.

[0024] On the other hand, the dimension of thin portions 123A, 123B, and 123C in the width direction of tape 120 is usually 10 μm or more, and preferably 30 μm or more. The upper limit is usually 3 mm, and preferably 1 mm or less. By keeping it within this range, the ease of opening is improved, for example, by interaction with the R (radius of curvature) formed in notch 131 in the example described below.

[0025] For example, when the tape 120 is formed by extrusion molding, a thickness transition portion is formed between the thick portions 121, 122 or the intermediate portion 124 and the thin portions 123A, 123B, 123C. In this case, the thin portions 123A, 123B, 123C are identified as portions formed thinner than the thinner of the thick portions 121, 122 or the intermediate portion 124 on both sides. Therefore, if the thicknesses of the thick portions 121, 122 and the intermediate portion 124 on both sides are different, there may be a portion (thickness transition portion) between the thick portion and the thin portion 123A, 123B, 123C that is neither a thick portion, an intermediate portion, nor a thin portion. Furthermore, when the thicknesses of the thin portions 123A, 123B, 123C are specifically specified as described above, the thin portions 123A, 123B, 123C are identified as portions that satisfy the thickness specification. In this case, there may be a portion (thickness transition portion) between the thick portions 121, 122 and the intermediate portion 124 that is neither a thick portion, an intermediate portion nor a thin portion.

[0026] On the other hand, thick-walled portions 121, 122 may be thicker than adjacent thin-walled portions 123A, 123B, 123C, but the thickness is preferably 200 μm or more, more preferably 250 μm or more, and even more preferably 300 μm or more. By making the thickness of thick-walled portions 121, 122 200 μm or more, the tensile strength is increased, and it is possible to prevent thick-walled portions 121, 122 from breaking due to the force applied when opening the package. Furthermore, the upper limit of the thickness of thick-walled portions 121, 122 is not particularly limited, but is typically 700 μm. By making the thickness of thick-walled portions 121, 122 700 μm or less, it is possible to prevent the occurrence of pinholes due to melt flattening.

[0027] Furthermore, as described above, bag body 110 is formed by overlapping two sheets of film or folding back a single sheet of film. When two sheets of film are overlapped, by adjusting the direction of crystal orientation between the film forming first surface 111A and the film forming second surface 111B, tearing of bag body 110 starting from notch 115 can be guided in different directions on the first surface 111A side and the second surface 111B side, making it easier for the edge of bag body 110 to be uneven after opening. Similarly, when a single sheet of film is folded back, by adjusting the fold between first surface 111A and second surface 111B to be non-parallel and non-perpendicular to the direction of crystal orientation of the film, it is similarly easier for the edge of bag body 110 to be uneven after opening.

[0028] FIG. 4 is a diagram illustrating an example of a method for manufacturing the tape according to the first embodiment of the present invention. As shown in FIG. 1, in the tape-attached bag 100 according to this embodiment, notches 131 that overlap the side seal portions 114 are formed at the longitudinal end of the tape 120. These notches 131 are formed, for example, as shown in FIG. 4, when the tape-attached bags 100 are continuously manufactured using a bag-making machine. Specifically, the notches 131 (which are openings at this point) are formed in the long tape 120 at intervals equal to the width of the bag body 110 after manufacture, i.e., the same intervals as the intervals between the side seal portions 114. The tape 120 is then joined to the bag body 110, and the side seal portions 114, top seal portion 112, and bottom seal portion 113 are formed so as to cross the notches 131. The bag body 110 to which the tape 120 has been joined is cut at the center of the side seal portions 114 to obtain the tape-attached bag 100 shown in FIG. 1.

[0029] For example, when a user attempts to tear bag body 110 starting from notch 115 formed in side seal portion 114 at a longitudinal end of tape 120, notch 131 thus formed guides the tearing of bag body 110 starting from notch 115 so that the tearing proceeds along the thin-walled portion formed in tape 120. Specifically, for example, as shown in FIG. 5A , notch 131A having a shape including two tapered portions 132A directed toward thin-walled portions 123A and 123B may be formed on first portion 120A of tape 120. Furthermore, as shown in FIG. 5B , notch 131B having a shape including a single tapered portion 132B directed toward thin-walled portion 123C may be formed on second portion 120B of tape 120. In this way, by forming notches 131 in a shape that matches the position of the thin-walled portions formed in first portion 120A and second portion 120B of tape 120, the effect of making the ends of tape 120 and bag body 110 uneven after opening can be more easily and reliably achieved, as described above. It is also preferable to add an R (radius of curvature) to the tip of the tapered portion. By adding an R, even if there is some misalignment in the position of the acute-angled tip during processing, the tear can be guided to the thin-walled portion, thereby reducing the number of defective products. The R is, for example, 0.1 mm to 1.0 mm, and preferably 0.2 mm to 0.7 mm.

[0030] FIG. 6 is a cross-sectional view showing an example of a tape according to the first embodiment of the present invention. In the example described above with reference to FIGS. 1 and 2, the tape 120 attached to the bag body 110 is supplied independently before being attached to the bag body 110. In this case, the first portion 120A and the second portion 120B may be supplied in a connected state at any position. For example, as shown in the figure, the first portion 120A and the second portion 120B may be supplied in a connected state at the widthwise end of the third region R3 opposite the second region R2 shown in FIG. 2, i.e., between the second thick portions 122A and 122B. Alternatively, the first portion 120A and the second portion 120B may be supplied in a connected state at the widthwise end of the first region R1 opposite the second region R2 shown in FIG. 2, i.e., between the first thick portions 121A and 121B. In this case, too, it is possible to make the first portion 120A and the second portion 120B of the tape 120 face each other by cutting or bending the connecting portion. In other words, the tape 120 according to this embodiment does not necessarily need to have the first portion 120A and the second portion 120B facing each other when it is supplied, as long as it is configured so that the first portion 120A and the second portion 120B can be made to face each other.

[0031] In the above example, the connecting portion between the first portion 120A and the second portion 120B of the tape 120 is eventually cut off. However, the process of cutting off the connecting portion may be performed before or after attaching the tape 120 to the bag body 110. In the latter case, when the tape 120 is attached to the bag body 110, the tape 120 is folded at the connecting portion so that the first portion 120A and the second portion 120B face each other. In this case, the first portion 120A and the second portion 120B can be positioned facing each other with their relative positions fixed. For example, by maintaining the first portion 120A and the second portion 120B in a connected state until the above-described notch 131 is formed, it is possible to reduce misalignment of the notch 131 between the first portion 120A and the second portion 120B.

[0032] 7 and 8 are cross-sectional views showing modified examples of the first embodiment. In the example described above with reference to FIG. 2 and the like, in tape 120, first thick portion 121A and second thick portion 122A are formed in first region R1 and third region R3, respectively, in first portion 120A, thin portions 123A and 123B are formed at both ends of second region R2, and intermediate portion 124 is formed between thin portions 123A and 123B. In second portion 120B, first thick portion 121B and second thick portion 122B formed in first region R1 and third region R3, respectively, extend beyond the ends of second region R2, and thin portion 123C is formed opposite intermediate portion 124 of first portion 120A.

[0033] In contrast, in the example of FIG. 7 , the first portion 120A has a first thick portion 121A and a second thick portion 122A formed in the first region R1 and the third region R3, respectively, and thin portions 123A and 123B formed at both ends of the second region R2. However, in the example of FIG. 7 , two intermediate portions 124A and 124B are formed between the thin portions 123A and 123B, and another thin portion 123D is formed between the intermediate portions 124A and 124B. Meanwhile, in the example of FIG. 7 , the second portion 120B has a first thick portion 121B and a second thick portion 122B formed in the first region R1 and the third region R3, respectively, that extend beyond the ends of the second region R2. However, in the example of FIG. 7 , two thin portions 123C and 123E are formed in portions other than both ends of the second region R2. Thin portions 123C and 123E face intermediate portions 124A and 124B of first portion 120A, respectively. That is, in this embodiment, the number of thin portions of second portion 120B facing the intermediate portion of first portion 120A is not limited to one, and may be multiple. In this case as well, the thin portions formed in first portion 120A and the thin portions formed in second portion 120B do not face each other, so that the end portions of tape 120 after opening can be uneven regardless of the direction of force, as in the example of FIG. 2.

[0034] On the other hand, in the example of FIG. 8, the first portion 120A has a first thick portion 121A and a second thick portion 122A formed in the first region R1 and the third region R3, respectively, and thin portions 123A and 123B formed at both ends of the second region R2. However, in the example of FIG. 8, two intermediate portions 124A and 124B are formed between the thin portions 123A and 123B, and another thin portion 123D is formed between the intermediate portions 124A and 124B. The difference from the example of FIG. 7 is that in the example of FIG. 8, the thin portion 123D is not formed midway between the thin portions 123A and 123B, but is formed at a position biased toward the thin portion 123B. Therefore, the width of the intermediate portion 124A is 1 / 2 times the width of the intermediate portion 123A. 4 8, second portion 120B is formed in the same manner as in the example of FIG. 2, and includes first thick portion 121B, second thick portion 122B, and thin portion 123C. Thin portion 123C faces middle portion 124A of first portion 120A. In this case as well, the thin portion formed in first portion 120A and the thin portion formed in second portion 120B do not face each other, so that the end of tape 120 after opening can be made uneven regardless of the direction of force, as in the example of FIG. 2.

[0035] Fig. 9 is a cross-sectional view showing another modified example of the first embodiment. In the example shown in Fig. 9, the first region R1, second region R2, and third region R3 defined in the width direction of the tape 120 do not cover the entire tape 120. In the illustrated example, thin-walled portions 127A and 127B are formed at the ends of the tape 120 on the thick-walled portions 121A and 121B sides, and thin-walled portions 127C and 127D are formed at the ends of the tape 120 on the thick-walled portions 122A and 122B sides, respectively. Unlike the thin-walled portion 123 described above, these thin-walled portions 127 are not intended to break when the tape-attached bag 100 is opened. Specifically, for example, thin-walled portion 127 may be thicker than thin-walled portion 123. Alternatively, even if thin-walled portion 127 and thin-walled portion 123 are similarly thin, thin-walled portion 127 will not rupture when tape-attached bag 100 is opened if the tapered portion of notch 131 described above with reference to FIGS. 5A and 5B faces thin-walled portion 123 and not thin-walled portion 127. In such a case, first region R1 is defined as the region where thick-walled portions 121A and 121B are formed (excluding thin-walled portions 127A and 127B). Similarly, third region R3 is defined as the region where thick-walled portions 122A and 122B are formed (excluding thin-walled portions 127C and 127D). In the illustrated example, thin portions 127A to 127D and the regions closer to the ends of tape 120 in the width direction than thin portions 127A to 127D are not included in any of first region R1, second region R2, and third region R3.

[0036] (Second embodiment) Fig. 10 is a plan view of a bag with zipper tape according to a second embodiment of the present invention, and Fig. 11 is a cross-sectional view taken along line XI-XI in Fig. 10. As shown, the bag with zipper tape 200 includes a bag body 110 similar to that of the first embodiment described above, and zipper tapes 220 joined to a first surface 111A and a second surface 111B of the bag body 110, respectively, to define one side of a storage space SP formed between the first surface 111A and the second surface 111B.

[0037] 11, the zipper tape 220 is a long member whose cross-sectional shape includes a first portion 220A and a second portion 220B facing each other. The first portion 220A and the second portion 220B each include, in their cross-sectional shape, first thick portions 121A and 121B, second thick portions 122A and 122B, thin portions 123A, 123B, and 123C, and an intermediate portion 124, as in the first embodiment, as well as base strips 225A and 225B and engaging portions 226A and 226B that constitute the zipper portion. The base strips 225A and 225B are joined to the first surface 111A and the second surface 111B of the bag body 110, respectively, and face each other. The engaging portions 226A and 226B protrude from the base strips 225A and 225B, respectively, and are engageable with each other.

[0038] In this embodiment, the second thickened portions 122A and 122B of the zipper tape 220 are continuous with the base strips 225A and 225B, respectively. The first, second, and third regions R1, R2, and R3 of the zipper tape 220 in the width direction are defined such that the third region R3 is adjacent to the zipper region including the base strips 225A and 225B, and the second region R2 is located between the first and third regions R1 and R3. The first, second, and third regions R1, R2, and R3 may cover the entire width of the zipper tape 220 except for the base strips 225A and 225B and the engagement portions 226A and 226B, as in the example shown in FIG. 11 , or may not cover these regions, as in another example described later. In the illustrated example, the second thickened portions 122A, 122B are thicker than the base strips 225A, 225B. However, in other examples, the second thickened portions 122A, 122B and the base strips 225A, 225B may have the same thickness. The shapes of the engaging portions 226A, 226B are not limited to the illustrated example and may be any known zipper engaging portion shape, such as a combination of claw, hook, or knob shapes. In the illustrated example, the engaging portion 226A is male and the engaging portion 226B is female, but the opposite is also possible. While the illustrated example shows one pair of engaging portions, multiple pairs of engaging portions may also be provided. The zipper tape 220, like the tape 120 of the first embodiment, is formed by extrusion molding of, for example, a polyolefin resin. Known additives, such as stabilizers, antioxidants, lubricants, antistatic agents, or colorants, may be added to the material as needed. The material of the zipper tape 220 is not limited to fossil fuel-derived resin, but may be environmentally friendly bioplastic, or a mixture of fossil fuel-derived resin and bioplastic. A preferred example of bioplastic is biopolyethylene.

[0039] Furthermore, the zipper tape 220 may be made of a mono-material resin composition mainly composed of polyethylene, similar to the above-described tape 120. In this case, the entire zipper tape 220 is formed of a resin composition mainly composed of polyethylene. By making the zipper tape 220 of a mono-material resin composition mainly composed of polyethylene, an environmentally friendly structure with excellent recyclability can be achieved. Furthermore, by using bio-polyethylene as the polyethylene, an even more environmentally friendly structure with excellent recyclability can be achieved.

[0040] 11, the present embodiment also defines a first region R1, a second region R2, and a third region R3 in the width direction of the zipper tape 220. These regions are common to the first portion 220A and the second portion 220B of the zipper tape 220 when the first portion 220A and the second portion 220B face each other. The second region R2 is located between the first region R1 and the third region R3. In the first portion 220A, a first thick portion 121A and a second thick portion 122A are formed in the first region R1 and the third region R3, respectively. A thin portion 123A and a thin portion 123B are formed at both ends of the second region R2 in the width direction, respectively. An intermediate portion 124 is formed between the thin portion 123A and the thin portion 123B. On the other hand, in the second portion 220B, the first thick portion 121B and the second thick portion 122B formed in the first region R1 and the third region R3, respectively, extend beyond the widthwise ends of the second region R2. That is, in the second portion 220B, the first thick portion 121B and the second thick portion 122B are formed so as to extend from the first region R1 or the third region R3 to a part of the second region R2, respectively. The thin portion 123C formed in the second region R2 of the second portion 220B faces the middle portion 124 of the first portion 220A. As a result, in the zipper tape bag 200 of this embodiment, as in the tape bag 100 of the first embodiment, if a user tears open the bag body 110 starting from the notch 115 formed in the side seal portion 114 at the longitudinal end of the tape 120, the ends of the zipper tape 220 and the bag body 110 can be made uneven after opening.

[0041] FIG. 12 is a cross-sectional view showing an example of a zipper tape according to a second embodiment of the present invention. The zipper tape 220 attached to the bag body 110 in the example described above with reference to FIGS. 10 and 11 is supplied independently before attachment to the bag body 110. The first portion 220A and the second portion 220B may be supplied connected at any position. For example, as shown in the figure, the first portion 220A and the second portion 220B may be supplied connected between the widthwise ends of the base strips 225A and 225B opposite the third region R3. Alternatively, the first portion 220A and the second portion 220B may be supplied connected between the widthwise ends of the first region R1 opposite the second region R2 shown in FIG. 11, i.e., between the first thick portions 121A and 121B. In this case, too, it is possible to make the first portion 220A and the second portion 220B of the zipper tape 220 face each other by cutting or bending the connecting portion. In other words, the zipper tape 220 according to this embodiment does not necessarily need to have the first portion 220A and the second portion 220B facing each other when it is supplied, as long as it is configured so that the first portion 220A and the second portion 220B can be made to face each other.

[0042] In the above example, the connecting portion between the first portion 220A and the second portion 220B of the zipper tape 220 is eventually cut off, but the process of cutting off the connecting portion and engaging the engagement portions 226A, 226B with each other may be performed before attaching the zipper tape 220 to the bag body 110, or may be performed after attaching the zipper tape 220 to the bag body 110. In the latter case, when the zipper tape 220 is attached to the bag body 110, the zipper tape 220 is folded at the connecting portion so that the first portion 220A and the second portion 220B face each other. In this case, the first portion 220A and the second portion 220B can be made to face each other with their positional relationship fixed. For example, when the notch 131 described above with reference to Figure 4 etc. is also formed in the zipper tape 220, the first part 220A and the second part 220B can be kept connected until the notch 131 is formed, thereby reducing the misalignment of the notch 131 between the first part 220A and the second part 220B.

[0043] Fig. 13 is a cross-sectional view showing another modified example of the second embodiment. In the example shown in Fig. 13, the first region R1, the second region R2, and the third region R3 do not entirely cover the area of ​​the zipper tape 220 other than the base strips 225A and 225B and the engagement portions 226A and 226B. In the illustrated example, thin-walled portions 127A and 127B are formed at the ends of the zipper tape 220 on the thick-walled portions 121A and 121B sides, and thin-walled portions 227C and 227D are formed between the thick-walled portions 122A and 122B and the base strips 225A and 225B, respectively. Like the thin-walled portion 127, the thin-walled portion 227 is not intended to break when the zipper tape bag 200 is opened. In this case, the first region R1 is defined as the region where the thick portions 121A and 121B are formed (excluding the thin portions 127A and 127B). Similarly, the third region R3 is defined as the region where the thick portions 122A and 122B are formed (excluding the thin portions 227C and 227D). In the illustrated example, the thin portions 127A and 127B and the regions closer to the widthwise ends of the zipper tape 220, and the regions between the thin portions 227C and 227D and the base strips 225A and 225B are not included in any of the first region R1, the second region R2, and the third region R3.

[0044] FIG. 14 is a diagram showing another example of a cutout in an embodiment of the present invention. The shape of the cutout shown in FIG. 14 can be applied to, for example, both the first and second embodiments. Specifically, in the example shown in FIG. 14, cutouts 231A and 231B are formed at the longitudinal ends of the tape 120, overlapping the side seal portion 114 (not shown). The cutout 231A is formed on the side of the first portion 120A of the tape 120 and includes bulging portions 232A and 232B facing the thin portions 123A and 123B. On the other hand, the cutout 231B is formed on the side of the second portion 120B of the tape 120 and includes a tapered portion 232C facing the thin portion 123C. 5A and 5B, when a user tries to tear the bag body starting from an end of tape 120 in the longitudinal direction, such cutouts 231A and 231B can guide the tearing of the bag body to proceed along the thin-walled portion formed in tape 120. In another example, as shown in FIG. 15, the middle portions of bulging portions 232A and 232B may have a shape without curvature.

[0045] Here, in this specification, a tapered portion refers to a portion in which the edges on both sides of the width direction of the notch are linear, and these linear edges taper toward the thin-walled portion. On the other hand, a bulge refers to a portion of the notch that bulges toward the thin-walled portion. As shown in the example of FIG. 14, the tip of the tapered portion can be rounded (with a radius of curvature). As mentioned above, rounding the notch shape allows the tear to be guided toward the thin-walled portion even if the notch is slightly misaligned during processing, thereby reducing the number of defective products. When a rounded tip is added, a tapered portion and a bulge portion have in common the fact that they include a portion rounded toward the thin-walled portion. A tapered portion is defined as a portion with linear edges tapering on both sides of the rounded portion. A bulge is defined as a portion with curved edges on both sides of the rounded portion, or a portion with linear edges that do not taper even if they are linear. For example, in the example of FIG. 14, the tapered portion 232C may be formed as a bulge.

[0046] In the case of the tip of the tapered portion, as in the example already described, R is, for example, 0.1 mm to 1.0 mm, preferably 0.2 mm to 0.7 mm. In the case of the bulging portion, R is, for example, 0.1 mm to 2.0 mm, preferably 0.1 to 1.5 mm, more preferably 0.1 mm to 1.0 mm, even more preferably 0.2 mm to 0.8 mm, and particularly preferably 0.2 mm to 0.7 mm.

[0047] 14, a first position P1 at which bulging portions 232A and 232B of notch 231A are connected to thin portions 123A and 123B is different from a second position P2 at which tapered portion 232C of notch 231B is connected to thin portion 123C in the longitudinal direction of tape 120. More specifically, in the illustrated example, second position P2 is closer to the longitudinal end of tape 120 than first position P1. With this configuration, the timing at which tearing of thin portion 123C begins from tapered portion 232C differs from the timing at which tearing of thin portions 123A and 123B begins from bulging portions 232A and 232B, making it possible to selectively tear the thin portion of thin portions 123A and 123B that experiences less resistance. 5A and 5B, the position where bifurcated tapered portion 132A of cutout 131A is connected to thin portions 123A and 123B may be different from the position where tapered portion 132B of cutout 131B is connected to thin portion 123C. In the longitudinal direction of tape 120, the distance between first position P1 and second position P2 is preferably 1 mm or more.

[0048] FIG. 16 is a diagram showing yet another example of a cutout in an embodiment of the present invention. The shape of the cutout shown in FIG. 16 can be applied to, for example, both the first and second embodiments. In the example shown in FIG. 16, cutouts 231A and 231B are formed at the longitudinal ends of the tape 120, overlapping the side seal portion 114 (not shown). The difference from the example shown in FIG. 14 is that, of the bulging portions 232A and 232B included in the cutout 231A, the bulging portion 232A bulges more toward the longitudinal center of the tape 120 than the bulging portion 232B. As a result, the intermediate portion 233 between the bulging portions 232A and 232B has an asymmetric shape in the width direction of the tape 120, unlike the example shown in FIG. 14. Specifically, the intermediate portion 233 is inclined with respect to the width direction of the tape 120 from the bulging portion 232B to the bulging portion 232A. As a result, when first portion 120A and second portion 120B of tape 120 are overlapped, intermediate portion 233 intersects thin portion 123C of second portion 120B at an angle rather than perpendicularly. This makes it possible to guide the tear not only when the tear in the bag body progresses toward bulge portion 232A as indicated by arrow Q1 in Fig. 16, but also when the tear progresses toward the middle between bulge portions 232A and 232B as indicated by arrow Q2.

[0049] FIG. 17 also shows another example of a cutout in an embodiment of the present invention. In the example shown in FIG. 17, cutouts 231A and 231B are formed at the longitudinal end of the tape 120, overlapping the side seal portion 114 (not shown). The difference from the example shown in FIG. 14 above is that in the example shown in FIG. 17, a tapered portion 232D facing the thin portion 123A is formed in the cutout 231A of the first portion 120A of the tape 120, and two oblique sides α and β are formed from the second thick portion 122A side toward the tapered portion 232D. Here, the oblique side refers to a portion on one side of the cutout that is inclined with respect to both the longitudinal and width directions of the tape 120. In the illustrated example, two oblique sides α and β are formed, but one oblique side or three or more oblique sides may be formed. Alternatively, a curved portion that protrudes outward may be formed similar to the bent portion formed by the oblique sides α and β. These oblique sides or curved portions cross thin portion 123C of second portion 120B when first portion 120A and second portion 120B of tape 120 are overlapped. As a result, similar to the example in Figure 16 above, not only when tearing of the bag body proceeds toward tapered portion 232D as indicated by arrow Q1, but also when tearing deviates from tapered portion 232D as indicated by arrow Q2, it is possible to guide the tearing toward tapered portion 232D and thin portion 123A continuing from tapered portion 232D.

[0050] 16 and 17, tearing of the bag body is guided toward thin-walled portion 123A closer to top seal portion 112, but tearing may be guided conversely toward thin-walled portion 123B farther from top seal portion 112. Specifically, in the example of FIG. 16, bulging portion 232B may bulge more than bulging portion 232A toward the longitudinal center of tape 120. Furthermore, in the example of FIG. 17, tapered portion 232D may be formed toward thin-walled portion 123B.

[0051] 14 to 17, first position P1, where bulge 232A or tapered portion 232D connects to thin portion 123A in first portion 120A of tape 120, is different from second position P2, where tapered portion 232C or bulge connects to thin portion 123C in second portion 120B, and second position P2 is closer to the longitudinal end of tape 120 than first position P1. The distance d between first position P1 and second position P2 is preferably 2 mm or more, more preferably 4 mm or more, and even more preferably 8 mm or more. The upper limit is preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 20 mm or less.

[0052] The thickness and other configurations of the thick portions 121, 122 and the thin portion 123 described in the first embodiment are also the same in the second embodiment. Furthermore, all of the modifications described above for the first embodiment are also applicable to the second embodiment. In the above-described embodiments, the first and second portions of the tape and zipper tape are formed with approximately the same width and are opposed to each other entirely, but in other embodiments, one of the first and second portions of the tape or zipper tape may be wider than the other, thereby causing the first and second portions to be opposed to each other partially.

[0053] Furthermore, although the above describes an example in which the container body is a bag-shaped bag body, a tape or zipper tape may be joined to a container body other than a bag-shaped body to provide a container with tape or a container with zipper tape. Furthermore, although the above describes an example in which the first thick portion, second thick portion, thin portion, and intermediate portion are formed continuously, for example, when not only the thick portion and intermediate portion but also the thin portion is joined to the surface of the container body, the thin portion may be separated from the first thick portion, second thick portion, or intermediate portion at at least one location, and the tape or zipper tape may be provided as a combination of multiple long members.

[0054] Although the preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to these examples. It is clear that a person skilled in the art to which the present invention pertains can conceive of various modifications or alterations within the scope of the technical ideas described in the claims, and it is understood that these also naturally fall within the technical scope of the present invention. [Explanation of symbols]

[0055] 100...bag with tape, 110...bag body, 111A...first surface, 111B...second surface, 112...top seal portion, 113...bottom seal portion, 114...side seal portion, 115...notch, 120...tape, 120A...first portion, 120B...second portion, 121A, 121B...first thick portion, 122A, 122B...second thick portion, 123A, 123B, 123C...thin portion, 124...middle portion, 131, 131A, 131B, 231A , 231B...cutout, 132A, 132B, 232C, 232D...tapered portion, 200...bag with zipper tape, 220...zipper tape, 220A...first part, 220B...second part, 225A, 225B...base strip, 226A, 226B...engagement portion, 232A, 232B...bulge portion, 233...middle portion, R1...first region, R2...second region, R3...third region, SP...storage space, P1...first position, P2...second position.

Claims

1. A tape including in its cross-sectional shape first and second portions configured to be at least partially opposed, In the first portion, first and second thick portions are formed in the first and third regions of the first, second, and third regions in the width direction of the tape, first and second thin portions are formed at both ends in the width direction of the second region located between the first region and the third region, and at least one intermediate portion is formed between the first thin portion and the second thin portion, In the second portion, third and fourth thick portions are formed in the first and third regions, respectively, extending beyond the ends of the second region in the width direction, and at least one third thin portion is formed in the second region facing the intermediate portion, the first thin portion faces the third thick portion, the second thin portion faces the fourth thick portion, The first and second thin-walled portions and the third thin-walled portion are formed continuously in the longitudinal direction of the long tape.

2. The tape of claim 1 , wherein the intermediate portion is formed to a thickness within ±20% of the thickness of the first and second thick portions.

3. the first thin portion, the second thin portion, and the third thin portion are formed to a thickness of 10 μm or more and 200 μm or less; 3. The tape according to claim 1, wherein the first and second thick portions are formed to a thickness of 200 μm or more and 700 μm or less.

4. The tape of claim 1 , wherein the first, second and third regions cover the entire tape.

5. 5. The tape according to claim 1, wherein the first portion and the second portion are connected at a widthwise end of the first region or the third region opposite the second region.

6. 1. A zipper tape including, in a cross-sectional shape, first and second portions configured to be at least partially opposed, Each of the first and second portions includes a base strip and an engagement portion projecting from the base strip and capable of engaging with each other in a cross-sectional shape; In the first portion, a first thick portion is formed in the first region among first, second and third regions in the width direction of the zipper tape, a second thick portion continuous with the base strip is formed in the third region, first and second thin portions are formed at both ends in the width direction of the second region located between the first and third regions, and at least one intermediate portion is formed between the first thin portion and the second thin portion, In the second portion, third and fourth thick portions are formed in the first and third regions, respectively, extending beyond the ends of the second region in the width direction, and at least one third thin portion is formed in the second region facing the intermediate portion, the first thin portion faces the third thick portion, the second thin portion faces the fourth thick portion, The first and second thin-walled portions and the third thin-walled portion are formed continuously in the longitudinal direction of the long zipper tape.

7. The zipper tape according to claim 6 , wherein the intermediate portion is formed to have a thickness within ±20% of the thickness of the first and second thick portions.

8. the first thin portion, the second thin portion, and the third thin portion are formed to a thickness of 10 μm or more and 200 μm or less; 8. The zipper tape according to claim 6, wherein the first and second thick portions are formed to a thickness of 200 μm or more and 700 μm or less.

9. The zipper tape according to claim 6 , wherein the first, second and third regions cover the entire area of ​​the zipper tape other than the base strip and the engaging portion.

10. 10. The zipper tape according to claim 6, wherein the first portion and the second portion are connected to each other at a widthwise end of the first region opposite to the second region or at a widthwise end of the base strip opposite to the third region.

11. a container body having at least a first surface and a second surface facing each other; The tape according to any one of claims 1 to 5 or the zipper tape according to any one of claims 6 to 10, wherein at least a part of the first portion is joined to the first surface and at least a part of the second portion is joined to the second surface. A tape-attached container comprising:

12. The tape-attached container according to claim 11, wherein the first and second thick portions and the intermediate portion are joined to the first surface, and the third and fourth thick portions are joined to the second surface.

13. The tape-attached container according to claim 11 or 12, wherein the container body is bag-shaped.

14. side seal portions at which the first surface and the second surface are joined are formed on both ends of the container body; The container with tape according to claim 11 , wherein a notch is formed in a longitudinal end portion of the tape or zipper tape that overlaps the side seal portion.

15. the notch formed in the first portion includes a tapered or bulged portion directed toward the first thinned portion and the second thinned portion; The tape-attached container according to claim 14, wherein the notch formed in the second portion includes a tapered portion or a bulging portion directed toward the third thin-walled portion.

16. the notch formed in the first portion includes a first bulge and a second bulge directed toward the first thin portion and the second thin portion, respectively; The notch formed in the second portion has a tapered portion directed toward the third thin portion. The tape-attached container of claim 15, comprising:

17. The container with tape according to claim 16, wherein the first bulge protrudes more toward the center of the tape or zipper tape in the longitudinal direction than the second bulge protrudes.

18. the notch formed in the first portion includes a first tapered portion and a second tapered portion directed toward the first thinned portion and the second thinned portion, respectively; The tape-attached container according to claim 15, wherein the notch formed in the second portion includes a tapered portion directed toward the third thin-walled portion.

19. the notch formed in the first portion includes a first tapered portion directed toward the first thin-walled portion and at least one oblique side or curved portion directed toward the first tapered portion; the notch formed in the second portion includes a tapered or bulged portion directed toward the third thin-walled portion; 15. The tape-attached container according to claim 14, wherein the at least one oblique side or curved portion crosses the third thin-walled portion when the first portion and the second portion are overlapped.

20. 20. The container with tape according to claim 15, wherein a first position in the longitudinal direction of the zipper tape where the tapered portion or the bulging portion is connected to the first thin-walled portion in the first portion is different from a second position in the longitudinal direction of the zipper tape where the tapered portion or the bulging portion is connected to the third thin-walled portion in the second portion.

21. 21. The tape-attached container according to claim 20, wherein the second position is closer to an end of the zipper tape in the longitudinal direction than the first position.

22. 22. The tape-attached container according to claim 21, wherein the distance between the first position and the second position is 2 mm or more and 50 mm or less.

23. forming the notch in the tape or zipper tape; a step of joining the tape or zipper tape having the notch formed therein to the container body; forming the side seal portion across the notch on the container body to which the tape or zipper tape is joined; The method for manufacturing a tape-attached container according to any one of claims 14 to 22, comprising:

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