Paper container with zipper

Abstract

To provide a three-dimensionally shaped paper container provided with a zipper for taking a content out via shaking-out, exhibiting a self-standing property, and comprising a chuck at a top portion, capable of easily adjusting an adjustment degree of a shaking-out amount of a content since a shaking-out opening thereof can be set to a desired opening degree.MEANS FOR SOLVING THE PROBLEM: An upper portion seal part, an easily opening processing line, and a zipper tape are provided on a top part of a paper container provided with a zipper in order from an upper edge part side to provide an opening restriction part by partially leaving the upper portion seal part, when cutting the easily opening processing line. An opening of the zipper tape is restricted by the opening restriction part to set a shake-out opening to a desired size.SELECTED DRAWING: Figure 13

Description

[[TECHNICAL FIELD]]

[0001] The present disclosure relates to a paper container with a chuck, and particularly relates to a paper container with a chuck that has a three-dimensional shape and is self-standing, wherein the opening degree of the discharge opening can be adjusted, and the amount of discharged contents can be easily adjusted. [[BACKGROUND ART]]

[0002] Conventionally, as a paper container with a chuck, a technique as described in Patent Document 1 has been disclosed. That is, a chuck is provided on an upper part of a rectangular parallelepiped paper container, the chuck can be opened when taking out contents, and can be closed after taking out contents is completed. The above technique can protect contents and prevent contents from spilling when the paper container falls over. In addition, since it is a paper container, volume reduction and disposal of the container after contents are consumed is easy. FIG. 1 shows a blank plate 81 used for manufacturing the conventional paper container with a chuck 80, FIG. 2 is a perspective view of the conventional paper container with a chuck 80, FIG. 3 is a plan view thereof, and FIG. 4 is a perspective view of the same with a top portion opened.

[0003] Unless otherwise specified hereinafter, with reference to FIG. 2, the front outer wall plate 831b is taken as the front, and the front side, back side, left side, right side, upper side and lower side of the paper container with a chuck 80 are defined as such. The same applies to the paper container with a chuck 90 of the present disclosure. In addition, reference numerals used when describing the prior art are numbered in the 80s or 800s to distinguish them from those of the present disclosure. In addition, the subscript a of a reference numeral indicates an element on the back side of the paper container with a chuck 80, and the subscript b indicates an element on the front side thereof. For an element having both subscripts a and b, a reference numeral without a subscript includes both a and b.

[0004] In the resealable paper container 80 described in Patent Document 1, when opening the top and shaking out the contents, first the top protruding part (ear part) 874 is removed from the body part 872, then the easy-open processing line 851 is cut, and then the resealable tape 861 is opened to open the shaking opening 856. Then, the resealable paper container 80 is lifted and tilted, causing the contents to be shaken out.

[0005] However, as will be explained later, the dispensing opening 856 does not have an opening limiting section that restricts the opening of the top 871, and as shown in Figure 4, it opens over almost the entire transverse surface of the zippered paper container 80. Therefore, there was a risk that when a small amount of dispensing was requested, a larger amount than intended would be unintentionally dispensed. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2005-178833 [Overview of the project] [Problems that the invention aims to solve]

[0007] This disclosure was made to solve the above-mentioned problems, and the objective is to provide a resealable paper container 90 in which the opening of the dispensing opening 56 for dispensing the contents is limited to an appropriate size, thereby making it easier to control the amount of contents dispensed. [Means for solving the problem]

[0008] The above-mentioned problems can be solved by the following embodiments of this disclosure. In other words, the resealable paper container 90 of this disclosure is In a resealable paper container 90 assembled by joining two blank plates 93 made of laminated sheets with paper as the base material, The top of the aforementioned zippered paper container 90 is a top section 71 consisting of an upper overlapping plate 34 which is joined to the blank plate 93 by overlapping them, and a top plate 33 which is connected to the lower side of the upper overlapping plate 34. The first top side plate 411 is connected to one end of the upper overlapping plate 34, The side plate 412 of the second top section is connected to the other end of the upper overlapping plate 34, The top portion 71 has top portion projections 74 connected to both the left and right sides, The torso portion 72 is located below the aforementioned top portion 71, The bottom portion 73 provided below the body portion 72, An upper sealing portion 53 crosses the upper edge 21 or the vicinity of the upper edge 21 of the upper overlapping plate 34, the side plate 411 of the first top section, and the side plate 412 of the second top section, It comprises a chuck tape 61 located below the upper sealing portion 53, which crosses the upper overlapping plate 34, the side plate 411 of the first top portion, and the side plate 412 of the second top portion, An opening limiting portion 54 is provided, in which the upper sealing portion 53 is partially left intact. The opening limiting portion 54 extends from one side edge of the blank plate 93, which is the first side edge portion 11 or the vicinity of the first side edge portion 11, toward the other side edge portion, which is the second side edge portion 16, and does not reach the second side edge portion 16. The opening limiting portion 54 is formed by cutting the easy-open processing line 51. At least a portion of the easy-open processing line 51 extends between the upper sealing portion 53 and the zipper tape 61. At least a portion of the aforementioned easy-open processing line 51 crosses the upper sealing portion 53, The aforementioned easy-open processing line 51 is characterized by being formed by one line or a series of connected lines.

[0009] According to the embodiments of the present disclosure described above, in the resealable paper container 90, the opening of the dispensing opening 56 is limited to an appropriate size by the opening limiting portion 54, which is formed by partially leaving the upper sealing portion 53 intact, making it easier to control the amount of contents dispensed.

[0010] The side plate 411 of the first top section and the side plate 412 of the second top section are sometimes collectively referred to as the side plate 41 of the top section.

[0011] Furthermore, in a resealable paper container 90 of one embodiment of the present disclosure, The aforementioned easy-open processing line 51 is A first easy-open processing line 511 extends in the transverse direction of the resealable paper container 90, is located on the side of the dispensing opening 56 of the resealable paper container 90, and extends between the upper sealing portion 53 and the resealable tape 61, The first easy-open processing line 511 may have a second easy-open processing line 512 that extends from one end of the first easy-open processing line 511, across the upper seal portion 53, to the upper edge portion 21 of the resealable paper container 90.

[0012] Furthermore, in a resealable paper container 90 of one embodiment of the present disclosure, The second easy-open processing line 512 may be inclined in a direction that moves away from the first easy-open processing line 511 as it moves from the first easy-open processing line 511 toward the upper edge portion 21.

[0013] Furthermore, in a resealable paper container 90 of one embodiment of the present disclosure, The second easy-open processing line 512 smoothly connects with the first easy-open processing line 511 at one end of the first easy-open processing line 511 with a curve that is convex downward, and may cross the upper seal portion 53 and reach the upper edge portion 21.

[0014] Furthermore, in a resealable paper container 90 of one embodiment of the present disclosure, A notch 77 may be provided at least one location at the end of the easy-open processing wire 51.

[0015] Furthermore, in the paper container with a chuck 90 according to an embodiment of the present disclosure, the transverse range of the paper container with a chuck 90 in which the opening restricting portion 54 is formed may be, from one of the first side edge 11 of the blank plate 93 or the vicinity of the first side edge 11, up to a substantially central portion in the width direction of the upper overlapping plate 34.

[0016] Furthermore, in the paper container with a chuck 90 according to an embodiment of the present disclosure, the transverse range of the paper container with a chuck 90 in which the opening restricting portion 54 is formed is, from one of the first side edge 11 of the blank plate 93 or the vicinity of the first side edge 11, among vertical folding lines that form the ridges 72d of the body portion 72 of the paper container with a chuck 90, a vertical folding line on a side closer to the first side edge 11 is defined as a second vertical folding line 13, and the range may be up to the second vertical folding line 13 or the vicinity of the second vertical folding line 13.

[0017] Furthermore, in the paper container with a chuck 90 according to an embodiment of the present disclosure, the transverse range of the paper container with a chuck 90 in which the opening restricting portion 54 is formed is, from one of the first side edge 11 of the blank plate 93 or the vicinity of the first side edge 11, among vertical folding lines that form the ridges 72d of the body portion 72 of the paper container with a chuck 90 on the blank plate 93, a vertical folding line on a side closer to the other second side edge 16 is defined as a third vertical folding line 14, and the range may be up to the third vertical folding line 14 or the vicinity of the third vertical folding line 14.

[0018] Furthermore, in the paper container with a chuck 90 according to an embodiment of the present disclosure, the transverse range of the paper container with a chuck 90 in which the opening restricting portion 54 is formed is, from one of the first side edge 11 of the blank plate 93 or the vicinity of the first side edge 11, Of the vertical fold lines forming the ridge portion 72d of the body portion 72 of the zippered paper container 90 of the blank plate 93, the vertical fold line on the other side closer to the second side edge portion 16 is designated as the third vertical fold line 14, and the vertical fold line on the side seal allowance 372 adjacent to the second side edge portion 16, on the opposite side of the second side edge portion 16, is designated as the fourth vertical fold line 15, and the distance between the fourth vertical fold line 15 and the third vertical fold line 14 is designated as distance X, and the fourth vertical fold line 15 may extend to a position that is distance X away from the third vertical fold line 14 in the direction of the first side edge portion 11.

[0019] Furthermore, in a resealable paper container 90 of one embodiment of the present disclosure, An easy-peel portion 58 may be provided on the upper sealing portion 53 of the blank plate 93.

[0020] Furthermore, in a resealable paper container 90 of one embodiment of the present disclosure, The easy-peel processing section 58 is located on the first side edge 11 and does not necessarily intersect with the second easy-open processing line 512.

[0021] Furthermore, in a resealable paper container 90 of one embodiment of the present disclosure, An opening guide line 55 may be provided on at least one of the top panels 33 of the resealable paper container 90.

[0022] Furthermore, in a resealable paper container 90 of one embodiment of the present disclosure, The opening guide line 55 is perpendicular to the lower edge 26 from the end L3 on the second side edge 16 side of the opening limiting portion 54, and the point on the line of the first transverse bending line 22 located below the upper overlapping plate 34 and the side plate 411 of the first top portion and the side plate 412 of the second top portion is defined as the inner reference point L4 of the opening guide line 55, and the reference point L4 or the vicinity of the reference point L4, The intersection point of the third vertical fold line 14 and the second horizontal fold line 23, which runs parallel to the lower side of the first horizontal fold line 22, may be on the line connecting the second double-height intersection point F2 or the vicinity of the second double-height intersection point F2. [Effects of the Invention]

[0023] According to the embodiments of the present disclosure described above, in a resealable paper container 90, the opening of the dispensing opening 56 is limited to an appropriate size, thereby providing a resealable paper container 90 that makes it easy to control the amount of contents dispensed. [Brief explanation of the drawing]

[0024] [Figure 1] This is an unfolded view of a blank plate 81 used in the manufacture of a conventional paper container 80 with a zipper. [Figure 2] This is a perspective view of a conventional resealable paper container 80. [Figure 3] This is a plan view of a conventional paper container with a zipper closure 80. [Figure 4] This is a perspective view of a conventional paper container 80 with a zipper, with the top open. [Figure 5] This is an unfolded view of a blank plate 93 used in the manufacture of a zippered paper container 90 according to the first embodiment of the present disclosure. [Figure 6] This is a front view showing the shape of the paper container (flat state) 91 in the intermediate stage when manufacturing a paper container 90 with a zipper using the blank plate 93 shown in Figure 5. [Figure 7] This is an unfolded view of a blank plate 93 used in the manufacture of a zippered paper container 90 according to the first aspect (third and sixth embodiments) of the second embodiment of the present disclosure. [Figure 8] This is a front view showing the shape of the paper container (flat state) 91 in the intermediate stage when manufacturing a paper container 90 with a zipper using the blank plate 93 shown in Figure 7. [Figure 9] This is a perspective view showing the shape of the paper container (folded state) 92 at an intermediate stage when manufacturing a zippered paper container 90 using the blank plate 93 shown in Figure 7. [Figure 10] This is a perspective view of a resealable paper container 90 made using the blank plate 93 shown in Figure 7. [Figure 11]Figure 10 is a side view of the resealable paper container 90. [Figure 12] Figure 10 is a plan view of the resealable paper container 90 shown. [Figure 13] Figure 10 is a perspective view of the resealable paper container 90 with its top 71 open. [Figure 14] (a) This is a diagram showing the upper edge of Figure 4. (b) This is a diagram showing the upper edge of Figure 13. [Figure 15] This is a front view showing the shape of a paper container (planar state) 91 at an intermediate stage in the manufacturing of a resealable paper container 90 according to a second embodiment of the present disclosure. [Figure 16] This is a front view showing the shape of a paper container (planar state) 91 at an intermediate stage in the manufacturing of a resealable paper container 90 according to the fourth embodiment of this disclosure. [Figure 17] This is a front view showing the shape of a paper container (planar state) 91 at an intermediate stage in the manufacturing of a resealable paper container 90 according to the seventh embodiment of this disclosure. [Figure 18] This is a front view showing the shape of a paper container (planar state) 91 at an intermediate stage in the manufacturing of a resealable paper container 90 according to the eighth embodiment of this disclosure. [Figure 19] This is a front view showing the shape of a paper container (planar state) 91 at an intermediate stage in the manufacturing of a resealable paper container 90 according to the ninth embodiment of this disclosure. [Figure 20] This is a front view showing the shape of a paper container (planar state) 91 at an intermediate stage in the manufacturing of a resealable paper container 90 according to the first embodiment of the tenth embodiment of this disclosure. [Figure 21] This is a front view showing the shape of a paper container (planar state) 91 at an intermediate stage in the manufacturing of a resealable paper container 90 according to the second embodiment of the tenth embodiment of this disclosure. [Figure 22] This is a front view showing the shape of a paper container (planar state) 91 at an intermediate stage in the manufacturing of a resealable paper container 90 according to the eleventh embodiment of this disclosure. [Figure 23]This is a front view showing the shape of a paper container (planar state) 91 at an intermediate stage in the manufacturing of a resealable paper container 90 according to the twelfth embodiment (first aspect of the thirteenth embodiment) of this disclosure. [Figure 24] This is a front view showing the shape of a paper container (planar state) 91 at an intermediate stage in the manufacturing of a resealable paper container 90 according to the second embodiment of the thirteenth embodiment of this disclosure. [Figure 25] This is a front view showing the shape of a paper container (planar state) 91 at an intermediate stage in the manufacturing of a resealable paper container 90 according to the third aspect of the thirteenth embodiment of this disclosure. [Figure 26] This is a front view showing the shape of a paper container (planar state) 91 at an intermediate stage in the manufacturing of a resealable paper container 90 according to the fourth aspect of the thirteenth embodiment of this disclosure. [Modes for carrying out the invention]

[0025] The present disclosure will be explained below with reference to the drawings. However, this disclosure is not limited to these specifically shown forms or the various specifically described structures. Please note that in each diagram, the size and proportions of the components may be altered or exaggerated for clarity. Also, unnecessary or repetitive symbols may be omitted for readability.

[0026] Furthermore, the numerical values ​​such as dimensions and material names of each component described herein are merely examples of embodiments and are not limiting; they can be selected and used as appropriate. In this specification, terms that specify shapes and geometric conditions, such as parallel, orthogonal, perpendicular, and center, are intended to include not only their strict meanings but also substantially equivalent states.

[0027] ≪First Embodiment≫ A first embodiment will be described.

[0028] <Blank plate> Figure 5 shows the blank plate 93 of the zippered paper container 90 according to the first embodiment of this disclosure. Figure 5(a) shows the back blank plate 10a, and Figure 5(b) shows the front blank plate 10b. The two blank plates, the back blank plate 10a and the front blank plate 10b, are collectively referred to as the blank plate 93.

[0029] Furthermore, unless otherwise specified, in each component of the blank plate 93 described later, the subscript 'a' of each symbol indicates an element of the blank plate 10a on the back side, and the subscript 'b' indicates an element of the blank plate 10b on the front side. In elements that have both subscripts 'a' and 'b', symbols without subscripts are assumed to include both 'a' and 'b'.

[0030] The lower side of the blank back plate 10a in Figure 5(a), specifically the upper back edge 21a, becomes the upper side of the zippered paper container 90. The upper edge portion 21b of the front blank plate 10b in Figure 5(b) is the upper side of the zippered paper container 90.

[0031] In both Figures 5(a) and (b), the front side of the drawing represents the outer surface of the assembled zippered paper container 90, and the back side represents the inner surface. Figures 5(a) and (b) are symmetrical with respect to their respective upper edges 21a and 21b. When the inner surfaces of the back blank plate 10a and the front blank plate 10b are aligned and superimposed, each component (such as the molded plates, lines, sealing parts, and chuck tape joints described later) overlaps.

[0032] The aforementioned back blank plate 10a and front blank plate 10b, which are aligned and stacked, are joined together to create an intermediate zippered paper container (flat state) 91 as shown in Figure 6. Further, an intermediate zippered paper container (folded state) 92 as shown in Figure 7 is created, and the process proceeds toward the completion of the zippered paper container 90. This manufacturing method will be described later.

[0033] Unless otherwise specified, Figure 5(b) will be used to indicate the top, bottom, left, and right sides of the front blank plate 10b. The back blank plate 10a will also be described with its upper edge 21a as the top. Therefore, in Figure 5(a), the top and bottom will be reversed. In the resealable paper container 90, the upper edge 21 is considered the upper side, and the lower edge 26 is considered the lower side.

[0034] The formed resealable paper container 90, as will be explained later, is composed of a top section 71, a body section 72, and a bottom section 73, in that order from the top. The top section is sometimes referred to as the top section, and the bottom section as the bottom section. (See Figure 10). Furthermore, when describing the vertical direction of each component provided on the top portion 71, the term "top portion" may refer to the upper edge portion 21, and when describing the vertical direction of each component provided on the bottom portion 73, the term "bottom portion" may refer to the lower edge portion 26.

[0035] As described above, the back blank plate 10a and the front blank plate 10b are vertically symmetrical; therefore, the explanation of the blank plate 93 will be given using the front blank plate 10b. Furthermore, the back blank plate 10a and the front blank plate 10b are made of the same material (layer structure) and manufactured using the same method.

[0036] The front blank plate 10b of the zippered paper container 90 of this disclosure is formed in a substantially rectangular shape using a laminated sheet in which a base paper is laminated as at least an intermediate layer and a heat-adhesive resin such as polyethylene is laminated as at least an innermost layer. Referring to Figure 5(b), the top is the upper edge portion 21b, the left is the first side edge portion 11b, the right is the second side edge portion 16b, and the bottom is the lower edge portion 26b. Laminated sheets will be explained later.

[0037] The front blank plate 10b is provided with, in order from the left, a first front longitudinal fold line 12b, a second front longitudinal fold line 13b, a third front longitudinal fold line 14b, and a fourth front longitudinal fold line 15b, all located in the longitudinal direction. It is desirable that the front vertical fold lines 12b, 13b, 14b, and 15b are substantially parallel to the front first side edge 11b and the front second side edge 16b, respectively.

[0038] Furthermore, the front blank plate 10b is provided with a first transverse fold line 22b, a second transverse fold line 23b, a third transverse fold line 24b, and a fourth transverse fold line 25b, which are located in the transverse direction, starting from the upper edge 21b. It is desirable that the horizontal fold lines 22b, 23b, 24b, and 25b on the front side are substantially parallel to the upper edge 21b and the lower edge 26b, respectively.

[0039] Furthermore, diagonal fold lines 171b on the first top of the front surface, 172b on the second top of the front surface, 181b on the first bottom of the front surface, and 182b on the second bottom of the front surface are provided, and the forming plates for each part necessary for forming the zippered paper container 90 are partitioned and configured.

[0040] The diagonal fold line 171b on the right side of the front blank plate 10b and the diagonal fold line 172b on the left side of the front blank plate 10b are sometimes collectively referred to as the diagonal fold line 17b on the front top.

[0041] The upper end of the diagonal fold line 171b on the first top of the front side is at the same position as the intersection point E1b on the first top of the front side, which is the intersection point of the first vertical fold line 12b on the front side and the first horizontal fold line 22b on the front side. The lower end of the diagonal fold line 171b on the first top of the front side is at the same position as the intersection point F1b on the second top of the front side, which is the intersection point of the second vertical fold line 13b and the second horizontal fold line 23b on the front side.

[0042] Furthermore, the upper end of the diagonal fold line 172b on the second top of the front side is at the same position as the intersection point E2b of the first top of the front side, which is the intersection point of the fourth vertical fold line 15b on the front side and the first horizontal fold line 22b on the front side. The lower end of the diagonal fold line 172b on the second top of the front side is at the same position as the intersection point F2b of the second top of the front side, which is the intersection point of the third vertical fold line 14b on the front side and the second horizontal fold line 23b on the front side.

[0043] Note that the diagonal fold line 181b on the right side of the front blank plate 10b and the diagonal fold line 182b on the left side of the front blank plate 10b are sometimes collectively referred to as the diagonal fold line 18b on the front bottom.

[0044] The upper end of the diagonal fold line 181b on the first bottom of the front side is at the same position as the intersection point H1b on the second bottom of the front side, which is the intersection point of the second vertical fold line 13b on the front side and the third horizontal fold line 24b on the front side. The lower end of the diagonal fold line 181b on the first bottom of the front side is at the same position as the intersection point G1b on the first bottom of the front side, which is the intersection point of the first vertical fold line 12b on the front side and the fourth horizontal fold line 25b on the front side.

[0045] The upper end of the diagonal fold line 182b on the second bottom of the front side is at the same position as the intersection point H2b of the second bottom of the front side, which is the intersection point of the third vertical fold line 14b and the third horizontal fold line 24b on the front side. The lower end of the diagonal fold line 182b on the second bottom of the front side is at the same position as the intersection point G2b of the first bottom of the front side, which is the intersection point of the fourth vertical fold line 15b and the fourth horizontal fold line 25b on the front side.

[0046] Furthermore, the aforementioned diagonal fold lines 171b, 172b, 181b, and 182b may be located near the aforementioned intersections E1b, E2b, F1b, F2b, G1b, G2b, H1b, and H2b, without touching them. By being located near these intersections, sufficient bending performance can be maintained without excessive concentration of fold lines in specific locations, thereby preventing a decrease in the strength of the laminated sheet of the front blank plate 10b.

[0047] On the left side of the blank plate 10b, the first side edge 11b has a seal allowance 371b formed by the first vertical fold line 12b, and on the right side, the second side edge 16b has a seal allowance 372b formed by the fourth vertical fold line 15b.

[0048] Furthermore, the lower edge portion 26b of the front blank plate 10b is formed by the fourth transverse fold line 25b of the front bottom portion, which is located below the front blank plate 10b.

[0049] Furthermore, the front blank plate 10b is provided with forming plates for each part in the direction downward from the upper edge portion 21b of the front surface, which is located at its very top.

[0050] To describe the main parts, a front upper overlapping plate 34b is provided below the front upper edge portion 21b. Below the front upper overlapping plate 34b, a front top panel 33b is connected via the front first horizontal fold line 22b. Below the front top panel 33b, a front wall panel 31b is connected via the front second horizontal fold line 23b. Below the front wall panel 31b, a front bottom panel 35b is connected via the front third horizontal fold line 24b.

[0051] Furthermore, the side panel 411b of the first top section of the front surface is connected to the left outer side of the upper overlapping panel 34b of the front surface via the second vertical folding line 13b of the front surface. On the right side of the upper overlapping plate 34b on the front side, the side plate 412b of the second top section of the front side is connected via the third vertical folding line 14b on the front side.

[0052] Furthermore, the front first top projection (ear portion) 391b is connected to the left outer side of the front top panel 33b via the front second vertical folding line 13b. On the right outer side of the front top panel 33b, the front second top projection (ear portion) 392b is connected via the front third vertical fold line 14b.

[0053] Furthermore, the first front side panel 321b is connected to the left outer side of the front wall panel 31b via the second front vertical fold line 13b. The second front side panel 322b is connected to the right outer side of the front wall panel 31b via the third front vertical fold line 14b.

[0054] Furthermore, the front first bottom protruding part (ear portion) 431b is connected to the left outer side of the front bottom plate 35b via the front second vertical folding line 13b. On the right outer side of the front bottom plate 35b, the front second bottom protruding part (ear) portion 432b is connected via the front third vertical folding line 14b.

[0055] Furthermore, the front first top projection (ear) portion 391b is connected to the lower side of the front first top portion side plate 411b via the front first horizontal fold line 22b. The front first side plate 321b is connected to the lower side of the front first top projection (ear) portion 391b via the front second horizontal fold line 23b. The front first bottom projection (ear) portion 431b is connected to the lower side of the front first side plate 321b via the front third horizontal fold line 24b.

[0056] Furthermore, the front second top projection (ear) portion 392b is connected to the lower side of the front second top portion side plate 412b via the front first horizontal fold line 22b. The front second side plate 322b is connected to the lower side of the front second top projection (ear) portion 392b via the front second horizontal fold line 23b. The front second bottom projection (ear) portion 432b is connected to the lower side of the front second side plate 322b via the front third horizontal fold line 24b.

[0057] In this embodiment, the process of creating fold lines on the blank plate 93 (creasing) is performed after the laminated sheet is completed, and then the laminated sheet is supplied to the machine that manufactures the zippered paper container 90. Alternatively, the creasing may be performed on the machine that manufactures the zippered paper container 90.

[0058] For the scoring process, an appropriate method will be adopted from known methods such as the platen method and the rotary die method. Alternatively, the laminated sheet may be cut into sheets before the creasing process is carried out. Or, the laminated sheet may be supplied to the creasing process in roll form.

[0059] Next, we will describe the punching process for manufacturing a blank plate 93 by punching out a laminated sheet. The punching process can be selected from known methods such as a platen method or a rotary die method. The blank plate 93 may be formed directly from a roll of laminated sheet, or it may be cut into individual sheets first and then punched out. Furthermore, the order of the scoring and die-cutting processes does not matter. They can be processed simultaneously.

[0060] Alternatively, a roll of laminated sheet slit to a predetermined roll width may be supplied to a machine that manufactures a paper container with a zipper 90, where it may be cut transversely to produce a blank plate 93.

[0061] The back blank plate 10a is symmetrical to the front blank plate 10b and has the same shape. In other words, it is a blank plate of the same shape but with the layer configuration reversed.

[0062] The upper overlapping plate 34b on the front side and the side plate 41b on the top of the front side are provided with an easy-open line 51b on the front side, which serves as an opening means. The presence of the easy-opening line 51b allows the resealable paper container 90 to be opened without the need for tools such as scissors.

[0063] When the inner surfaces of the back blank plate 10a and the front blank plate 10b are aligned and overlapped, the front upper overlapping plate 34b and the front top side plate 41b are provided with a front upper sealing portion 53b, which serves as a transverse sealing means as described later, and a front chuck tape joint portion 52b (see Figure 6), which are provided sequentially from the front upper edge portion 21b at predetermined positions where the two blank plates overlap each other.

[0064] Furthermore, at least a portion of the front easy-open processing line 51b is located between the front upper seal portion 53b and the front zipper tape joint portion 52b. When at least a portion of the easy-open processing line 51b on the front surface, which is located between the upper seal portion 53b on the front surface and the zipper tape joint portion 52b on the front surface, is opened, the zipper tape 61 is partially exposed. By opening the exposed zipper tape 61, the contents can be shaken out.

[0065] Furthermore, depending on the material, layer configuration, and ease-opening treatment of the laminated sheet of the front blank plate 10b, it may not be necessary to provide the easy-opening line 51b. Even without the easy-opening line 51b, it may be possible to open it by hand.

[0066] Furthermore, the easy-open line 51b may be opened with a cutting tool such as scissors. In that case, the intended opening line may be indicated by printing. Alternatively, it may be printed at the position of the easy-open line 51b shown in Figure 5. In addition, the intended opening line may not be explicitly indicated on the resealable paper container 90, but may be described in the accompanying instructions.

[0067] Figure 6 is a front view showing the shape of a zippered paper container (flat state) 91 in an intermediate stage when manufacturing a zippered paper container 90 using the blank plate 93 shown in Figure 5. The top is the upper edge 21b of the front blank plate 10b shown in Figure 5(b), and a back blank plate 10a is provided on the back side. The back blank plate 10a is not visible to the naked eye, but when viewed through, it has almost the same shape as the front blank plate 10b.

[0068] In Figure 6, the back blank plate 10a and the front blank plate 10b overlap, and each component is in the same positional relationship when viewed through the drawing, within the range of manufacturing variations. Therefore, the markings and subscripts on the front side may be omitted in the explanation.

[0069] On the upper overlapping plate 34 and the side plate 41 of the top surface, an upper sealing portion 53 and a chuck tape joining portion 52 are provided sequentially from the upper edge 21 side at predetermined positions where the two blank plates described above overlap each other, as will be described later, serving as a sealing means in the transverse direction.

[0070] The upper sealing portion 53 is provided on the upper edge 21 or near the upper edge 21 of the upper overlapping plate 34 and the side plate 41 of the top surface. If the upper sealing portion 53 is approximately parallel to the upper edge portion 21, the length of the upper sealing portion 53 can be shortened, and no waste is generated in the blank plate 93.

[0071] The upper seal portion 53, which serves as a transverse sealing means, is formed by joining the opposing front upper seal portion 53b and the back upper seal portion 53a. This joining is performed so as to traverse the entire width of the upper edge 21 or the vicinity of the upper edge 21 of the resealable paper container 90, thereby maintaining the airtight seal of the resealable paper container 90.

[0072] Furthermore, it is desirable that the upper sealing portion 53 be substantially parallel to the upper edge portion 21. In addition, it is desirable that the chuck tape joining portion 52 be substantially parallel to the upper edge portion 21. In such a configuration, opening and closing the zipper tape 61 and removing the contents become easier. Furthermore, the length of the zipper tape 61 can be shortened.

[0073] <Easy-opening wire of the first embodiment> Let me explain the easy-open processing wire 51. In Figures 5 and 6, the easy-open processing line 51 consists of a single straight line. However, in this embodiment, the configuration of the easy-opening line does not necessarily have to be as described above, and it is sufficient to provide the opening limiting portion 54 described below as appropriate, and one embodiment is illustrated here.

[0074] In this embodiment, when dispensing only a small amount of the contents filled in the resealable paper container 90, the opening of the dispensing opening 56 at the top 71 of the resealable paper container 90 can be adjusted, making it easier to control the amount of contents dispensed. For this purpose, an opening limiting section 54 is provided to adjust the opening. The opening limiting portion 54 is formed by partially removing the upper sealing portion 53 and leaving a portion of it intact.

[0075] The top of the top portion 71 of the resealable paper container 90 has an opening restriction portion 54 and a dispensing opening 56 formed in the transverse direction, and the opening restriction portion 54 is provided in the direction from the first side edge portion 11 to the second side edge portion 16 (inward direction). Furthermore, a swing-out opening 56 is provided extending from the second side edge 16 towards the first side edge 11 (inward direction).

[0076] The laminated sheets of the resealable paper container 90 are cut by an easy-open processing line 51 that extends diagonally from the second side edge 16, across the upper seal portion 53, and toward the upper edge portion 71c (upper edge portion 21) of the top portion. The dispensing opening 56 is then formed by the partial exposure of the resealable tape 61.

[0077] Between the upper seal portion 53 and the chuck tape joint portion 52 is the second side edge portion 16 of the easy-open processing line 51. When the easy-open processing line 51 in that portion is cut, the upper seal portion 53 is separated from the upper overlapping plate 34 and the second top side plate 412 of the chuck tape 61, and the chuck tape 61 is partially exposed.

[0078] Furthermore, as the cutting of the easy-open processing line 51 progresses, the upper seal portion 53 is cut and reaches the upper edge portion 71c (upper edge portion 21) of the top portion, thereby cutting off a piece of the laminated sheet of the resealable paper container 90 that forms the opening 56 for dispensing.

[0079] The upper sealing portion 53 is cut and removed along the easy-open processing line 51, and the remaining portion becomes the opening limiting portion 54.

[0080] ≪First aspect of the second embodiment≫ This embodiment will now be described with reference to Figure 7. The only difference between the first embodiment and this embodiment is the shape of the easy-open processing line 51; the other shapes, materials, and processing methods are the same. The procedures for creating and using the resealable paper container 90 will be described in this embodiment, but the same applies to the first embodiment.

[0081] <Easy-opening wire in the first aspect of the second embodiment> Let me explain the easy-open processing wire 51. In Figure 7, the easy-open processing line 51 is composed of a first easy-open processing line 511 and a second easy-open processing line 512. However, the configuration of the easy-opening line does not necessarily have to be as described above; it is sufficient to provide the opening limiting section 54 described below as appropriate, and one embodiment is shown here as an example.

[0082] The first easy-open processing line 511 extends in the transverse direction of the blank plate 93 and is located on the side of the dispensing opening 56, between the upper seal portion 53 and the chuck tape 61.

[0083] The right end of the first easy-open processing line 511 is in contact with the second side edge 16, and a notch 77 may be provided at that location. Providing the notch 77 makes initial opening easier.

[0084] The second easy-open processing wire 512 is connected to the end L1 on the first side edge 11 side of the first easy-open processing wire 511, and further extends to the upper edge 21.

[0085] When the first easy-open processing line 511 is cut, the upper sealing portion 53 is separated from the upper overlapping plate 34 and the second top side plate 412 of the upper part of the chuck tape 61, and the chuck tape 61 is partially exposed.

[0086] Furthermore, the cutting direction of the easy-open processing line 51 is changed, and the second easy-open processing line 512 is cut, reaching the upper edge portion 21, which cuts the upper seal portion 53 and cuts off a piece of the laminated sheet of the resealable paper container 90 that forms the opening 56 for dispensing.

[0087] The upper sealing portion 53 is cut and removed by the easy-open processing line 51, and the remaining portion becomes the opening limiting portion 54.

[0088] The end L1 on the first side edge 11 side of the first easy-open processing line 511 may be located between the second vertical folding line 13 and the third vertical folding line 14. The position of the end L1 of the first side edge 11 of the first easy-open processing line 511 allows the dispensing opening 56 to have the desired appropriate opening size, making it easier to control the amount of contents dispensed.

[0089] If the end L1 of the first side edge 11 of the first easy-open processing line 511 is on the first side edge 11 side than the second vertical folding line 13, the dispensing opening 56 becomes larger, and there is no significant difference between it and the opening that spans the entire width of the resealable paper container 90, making it impossible to control the amount of contents dispensed.

[0090] If the end L1 of the first side edge 11 of the first easy-open processing line 511 is on the second side edge 16 side of the third longitudinal folding line 14, the dispensing opening 56 becomes smaller, and a sufficient amount of the contents cannot be dispensed.

[0091] When dispensing the contents, the zipper tape 61 is opened, but the opening limiting section 54 restricts the size of the opening, so that the dispensing opening 56 is opened to an appropriate size, making it possible to dispense the contents in an appropriate amount.

[0092] Furthermore, when dispensing the contents, the dispensing opening 56 is tilted downwards, and by grasping the upper overlapping plate 34 on the opening limiting section 54 side and / or the side plate 411 on the first top section, the resealable paper container becomes easier to tilt.

[0093] Furthermore, when using intermittent or straight half-cut lines for the easy-open processing line 51 of the opening means, they may be formed using a conventional cutting tool. However, by using a laser irradiation method, an ultrasonic method, or a method called diamond cutting, it is possible to form half-cut lines with greater precision and stability.

[0094] Furthermore, the easy-opening seam 51 may be in the shape of a strip with a certain width. Also, multiple easy-opening seams 51 may be provided.

[0095] <Instructions for joining chuck tape> The assembly procedure for the resealable paper container 90 will be explained later, but here we will explain the procedure for joining the resealable tape 61.

[0096] In this case, the zipper tape joint 52 is the planned joint for the zipper tape 61 when assembling the zippered paper container 90.

[0097] The back blank plate 10a and the front blank plate 10b are overlapped, and the side edge sealing portions 371 and 372, and the upper sealing portions 53 are heat-sealed together. In this process, a chuck tape 61, in which a male tape body and a female tape body are pre-fitted at their mating portions, is inserted into this portion, and at the same time, the chuck tape joint 52 is heated and pressurized from the outer surface of the two blank plates 93 to heat-seal it.

[0098] The chuck tape 61 may be joined not only by heat sealing as described above, but also by other methods such as adhesive or adhesive tape.

[0099] By heat-sealing the chuck tape 61 in this manner, the misalignment of the heat seal is reduced compared to the method of heat-sealing the male tape body and the female tape body separately to the chuck tape joint 52, and the installation process is simplified, allowing the chuck tape 61 to be installed with production efficiency.

[0100] <Laminated blank sheet> As mentioned above, the laminated sheet used for the blank plate 93 is a laminated sheet in which at least an intermediate layer of paper substrate is laminated and at least an innermost layer of a heat-adhesive resin such as polyethylene is laminated. The intermediate layer may be provided with a water vapor, oxygen or other gas barrier layer, or a strength-enhancing layer as needed.

[0101] Furthermore, when a printed layer such as a design is provided on the resealable paper container 90 of this embodiment, the printing is usually done on the surface of the paper substrate layer. However, if the printability of the paper substrate layer is not good, the printed layer such as a design can be provided on, for example, a biaxially oriented polyethylene terephthalate film, and that film can be laminated onto any of the outer layers of the paper substrate layer.

[0102] The paper base layer is preferably made of paper that is rigid and resistant to cracking when folded along fold lines, but it is not particularly limited. Depending on the contents to be filled into the resealable paper container 90, a suitable material can be appropriately selected and used, taking into consideration water resistance (size) and other factors. For example, high-quality paper, bleached kraft paper, cup paper, and milk carton paper can be suitably used, with a basis weight of 90-320 g / m². 2 The range is appropriate.

[0103] As the resin for the innermost layer and, if necessary, the outermost heat-sealable resin layer (sealant layer), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), as well as medium-density polyethylene (MDPE), high-density polyethylene (HDPE), ethylene-α-olefin copolymer polymerized using a single-site catalyst, ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA), random copolymer of ethylene-methacrylic acid (EMAA), ethylene-methyl acrylate copolymer (EMA), ethylene-ethyl acrylate copolymer (EEA), ionomers, polypropylene and its copolymers, polyester resins, etc., can be used. From these, the most suitable resin can be appropriately selected and used depending on the contents to be filled and the storage and usage conditions.

[0104] Among the above-mentioned heat-adhesive resins, ethylene-methyl acrylate copolymer (EMA) and ethylene-methacrylic acid random copolymer (EMAA) are particularly excellent in terms of thermal stability during processing such as extrusion coating, adhesion to various substrates, and low-temperature heat sealability, as well as excellent thin-film formation properties. Therefore, it is easy to extrude and laminate the outermost heat-adhesive resin layer, which does not require much thickness, to a relatively thin thickness such as 6-10 μm, thereby reducing the proportion of plastic material used and providing cost advantages.

[0105] The innermost layer and, if necessary, the outermost layer of heat-adhesive resin can be laminated by applying an easy-adhesion treatment such as an anchor coat, corona treatment, or flame treatment to the laminated surface as needed, and then extruding the resin onto it. Alternatively, the heat-adhesive resin can be pre-formed into a film, and then the film can be laminated by bonding it using known dry lamination or extruded lamination (sandwich lamination).

[0106] When a gas barrier layer is laminated as an intermediate layer in a laminated sheet, the gas barrier layer can be a metal foil such as aluminum foil, or a vapor-deposited film in which metals or inorganic oxides such as aluminum, silica, or alumina are vapor-deposited to a thickness of 20 to 100 nm onto a base film such as biaxially oriented polyethylene terephthalate film (hereinafter referred to as PET film), biaxially oriented nylon film (hereinafter referred to as ON film), or biaxially oriented polypropylene film (hereinafter referred to as OPP film). Alternatively, ethylene vinyl acetate copolymer saponified film (hereinafter referred to as EVOH film), biaxially oriented nylon MXD6 film, polyacrylonitrile film, and PET film, ON film, or OPP film with a polyvinylidene chloride coating layer can be used.

[0107] Such gas barrier layers are usually preferably laminated on the inner surface of the intermediate paper substrate layer to effectively utilize their gas barrier properties. However, if a metal foil such as aluminum or a metal vapor-deposited film is used for the gas barrier layer, it can also be laminated on the outer surface of the paper substrate layer to utilize its metallic appearance in the design. The gas barrier layer can be easily laminated by known methods such as dry lamination or extrusion lamination (sandwich lamination).

[0108] <Manufacturing of resealable paper containers> The following outlines the procedure from the blank sheet 93 of the resealable paper container 90 to the intermediate stage resealable paper container (flat state) 91, then to the intermediate stage resealable paper container (folded state) 92, and finally to the completion of the resealable paper container 90 package filled with contents.

[0109] <Preparation of a resealable paper container (flat state) in the intermediate stage> When the two blank plates 10a and 10b are placed on top of each other, a chuck tape 61, with a male tape body and a female tape body already fitted together, is inserted into the position where the chuck tape joint portions 52 overlap, and the chuck tape joint portions 52 are heated and pressurized from the outer surface of the blank plate 93 to heat-seal them.

[0110] Next, the inner surfaces of the upper sealing portion 53 are heat-sealed together, and the inner surfaces of the first side edge sealing allowance 371 adjacent to the first side edge 11, and the inner surfaces of the second side edge sealing allowance 372 adjacent to the second side edge 16 are heat-sealed together. In this way, a bag shape is formed with the lower edge 26 open. Furthermore, notches 77 may be provided at each end of the easy-open processing line 51 (the upper edge and the parts that come into contact with the side edges on both sides). Note that the notches 77 may be provided at any one end.

[0111] Next, we will describe the case in which a crushed portion is provided in the folded portion of the zipper tape 61 to facilitate folding. Although not shown in the figure, the zipper tape 61, which is heat-sealed to the zipper tape joint 52, can be crushed to a width of approximately 2 mm at positions perpendicular to the second vertical folding line 13 and the third vertical folding line 14 by applying pressure from the outer surface of the laminated sheet of the zippered paper container 90 using a heat press or the like, thereby deforming the zipper tape 61 to reduce its thickness.

[0112] The resealable paper container 90 is not particularly limited in actual manufacturing, but to improve productivity, equipment may be used that performs the assembly of the paper container, the filling of the contents, and the sealing of each joint in-line. In this apparatus, a long roll of printed laminated sheet is unwound to form paper containers connected horizontally, and processes such as folding lines, insertion and heat sealing of chuck tape 61, heat sealing of side edge seal portions 371 and 372, heat sealing of upper seal portion 53, and punching out of notches 77 may be performed.

[0113] Furthermore, the order of the steps may be different from the above, as long as the desired resealable paper container 90 can be obtained.

[0114] Next, by cutting the paper into individual containers, an intermediate-stage zippered paper container (flat state) 91 with the shape shown in Figure 8 is produced. Subsequently, it is molded into a three-dimensional shape, and an intermediate-stage zippered paper container (folded box state) 92 as shown in Figure 9 is produced.

[0115] After the intermediate zippered paper container (folded state) 92 is manufactured, as shown in Figure 10, the upper overlapping plate 34 and the top side plate 41 are folded toward the back, and the top protrusions (ears) 74 on both sides are joined to the body 72 of the zippered paper container 90, and the contents are filled from the bottom 73 with the opening bottom 73 of the zippered paper container 90 facing upwards.

[0116] Next, the bottom seal portions 38 are heat-sealed together, and then folded towards the back. Subsequently, the bottom protrusions (ears) 75 that protrude from both sides of the bottom 73 of the resealable paper container 90 are folded and joined to the bottom plate 35, completing the packaging of the resealable paper container 90.

[0117] Figure 10 is a perspective view showing a first aspect of a second embodiment of the resealable paper container 90 of the present disclosure. Figure 11 is a side view of the resealable paper container 90 shown in Figure 10. Figure 12 is a top view of the resealable paper container 90 shown in Figure 10.

[0118] The resealable paper container 90 shown in Figure 10 has an outer shape that is roughly rectangular and has edges 72d on its body 72. Although the design envisions a rectangular parallelepiped paper container 90 with a zipper, since the container 90 is made of a flexible laminated sheet primarily composed of paper, it is designed to be approximately rectangular in shape, even if it is not perfectly rectangular.

[0119] Such a resealable paper container 90 can be made by following the procedure below. For example, using a blank plate 93 with the configuration shown in Figure 7, the inner surfaces of two blank plates 10a and 10b are aligned and then superimposed as shown in Figure 8. A chuck tape 61, with a male tape body and a female tape body pre-fitted together, is inserted into the position where the chuck tape joint portions 52 overlap. The chuck tape joint portions 52 are then heated and pressurized from the outside of the blank plate 93 to heat-seal them.

[0120] Next, the seal portions 371 on the first side edges 11 and the seal portions 372 on the second side edges are heat-sealed together, and the upper seal portions 53 are also heat-sealed together. In addition, a notch 77 is provided at the end of the second side edge 16 of the first easy-open processing line 511, and an intermediate stage zippered paper container (flat state) 91 is created in a folded shape with an open bottom seal portion 38.

[0121] <Intermediate stage: Fabrication of a resealable paper container (folded state)> Next, a mandrel is inserted through the opening 73 at the bottom of the intermediate zippered paper container (flat state) 91, leaving the upper overlapping plate 34 in place. The top plate 33 below it is then spread forward and backward along the first horizontal fold line 22, causing the upper overlapping plate 34 to stand upright.

[0122] In order to ensure that the ridge portion 72d of the body portion 72 is bent properly, an auxiliary member may be brought into contact with the vicinity (including contact) of the ridge portion 72d from the inside and / or outside of the body portion 72.

[0123] Below the upper overlapping plate 34, a top section 71 is formed by a top plate 33, followed by a body section 72 with a roughly rectangular horizontal cross-section, and an intermediate stage zippered paper container (folded box state) 92 is formed with a roughly rectangular bottom opening 73. At this stage, as shown in Figure 9, the upper overlapping plate 34 is standing upright in the upward direction.

[0124] Although the design assumes a rectangular shape for the horizontal cross-section of the body 72 and the opening of the bottom 73, the resealable paper container 90 is made of a flexible laminated sheet mainly composed of paper, and therefore is designed to be approximately rectangular, even if it is not perfectly rectangular.

[0125] <Forming and filling of resealable paper containers> Next, the upper overlapping plate 34, which stands upright, is folded and laid down on the back side (back top plate 33a side), and the top protruding parts (ears) 74 that protrude on both the left and right sides are folded in the direction of the side plates 32 and joined to the body 72.

[0126] The joining method may include using adhesives (such as hot melt), adhesive tape, or mechanical joining methods (such as those involving engagement or the use of fasteners). Furthermore, if the outermost layer of the blank plate 93 is provided with a thermoplastic resin layer (sealant layer), the thermoplastic resin layer may be heat-sealed. The same method is used to join the bottom protruding portion (ear portion) 75, which will be described later.

[0127] The tip of the top protruding part (ear part) 74 may be joined to the body 72 of the resealable paper container 90. Furthermore, the parts of the top-facing protrusion (ear portion) 74 other than the tip may be joined to the body portion 72 of the resealable paper container 90. In that case, the tip of the top-facing protrusion (ear portion) 74 does not need to be joined to the body portion 72 of the resealable paper container 90.

[0128] As described above, the bottom 73 of the intermediate-stage resealable paper container (folded state) 92 is turned upward, and the contents are filled in through the opening bottom 73. Then, the bottom 73 is folded, and the bottom sealing edges 38 are heat-sealed together in a gusset-like manner.

[0129] Subsequently, the bottom seal portion 38 is folded and laid flat on the back side (back bottom plate 35a side), and the bottom protrusions (ear portions) 75 that protrude on both the left and right sides are folded and joined to the bottom plate 35 side, thereby completing the packaging body of the roughly rectangular parallelepiped paper container 90 with a zipper.

[0130] <Opening mechanism for dispensing from a resealable paper container> Figure 13 shows the top 71 of the packaging bag of the completed resealable paper container 90 containing the contents, opened for shaking.

[0131] The first easy-open processing line 511 is opened manually from a notch 77 (see Figures 10 to 12) provided on its second side edge 16, and is cut until it reaches the end L1 of the first side edge 11. Then the cutting direction changes to the upper edge 21 side, and cutting proceeds along the second easy-open processing line 512. The cutting then progresses to the upper edge 21, and when the cutting is complete, the cut pieces of the upper overlapping plate 34 and the second top side plate 412 are cut off (see Figure 13).

[0132] Next, the front opening gripping area 57b between the front first easy-open processing line 511b and the zipper tape 61, and the back opening gripping area 57a between the back first easy-open processing line 511a and the zipper tape 61 are grasped by hand and spread outwards in the zippered paper container 90, thereby opening the zipper tape 61 that has been exposed by cutting the easy-open processing line 51.

[0133] During the opening operation of the chuck tape 61, the end of the chuck tape 61 on the second side edge 16 opens up to the second side edge sealing allowance 372, while the end of the opening 56 for dispensing on the first side edge 11 of the chuck tape 61 on the opposite side is prevented from opening by the opening limiting portion 54. The opening limiting portion 54 is the portion remaining after the upper sealing portion 53 has been cut along the easy-open processing line 51.

[0134] In a conventional zippered paper container 80 that does not have an opening limit, when the top 871 is opened, the zipper tape 61 opens over almost the entire width from the sealing allowance 836 on one side edge to the sealing allowance 836 on the other side edge, as shown in Figure 4, because there is no opening limit.

[0135] Figure 14(a) shows the upper edge of a conventional resealable paper container 80 with an opening, viewed from above. The dispensing opening 856 for squeezing out the contents is large and extends almost the entire width of the resealable paper container 80, making it difficult to control when squeezing out small amounts of contents, and there is a risk of unintentionally squeezing out a large amount.

[0136] On the other hand, Figure 14(b) shows the upper edge portion of the resealable paper container 90 of the present disclosure when viewed from above with the opening opened. The dispensing opening 56 through which the contents pass when dispensing the contents is the area of ​​the resealable paper container 90 excluding the opening limiting portion 54, making it easy to control when dispensing small amounts of contents and allowing the desired volume to be dispensed.

[0137] Furthermore, while the method for creating the blank plate 93 has mainly been described for the front blank plate 10b, the back blank plate 10a has the same shape, is symmetrical with respect to its upper edges 21a and 21b, and is manufactured using the same method, so the explanation for the back blank plate 10a will be omitted.

[0138] Furthermore, this description of the embodiment illustrates an example in which the opening limiting portion 54 is on the left side and the swing-out opening 56 is on the right side. However, the embodiment is not limited to this example, and the left and right sides may be reversed. The opening limiting portion 54 may be on the right side and the swing-out opening 56 may be on the left side. The same applies to the embodiments described below.

[0139] <Procedure for cutting the easy-opening wire> The procedure for cutting the easy-open processing line 51 of this embodiment will now be described. First, the first easy-open processing line 511 is cut from the second side edge 16 to the end L1 of the first side edge 11 of the first easy-open processing line 511. Subsequently, the second easy-open processing line 512 is cut, changing direction at the end L1 of the first side edge 11 of the first easy-open processing line 511, and passing through the upper seal portion 53 to the upper edge 21. Then, the corresponding sections of the upper overlapping plate 34 and the side plate 412 of the second top portion are cut off, and the remaining upper seal portion 53 becomes the opening limiting portion 54.

[0140] Since the opening of the chuck tape 61 is restricted by the opening limiting portion 54, the dispensing opening 56 opens to an appropriate size. Therefore, it is easy to control the amount of contents dispensed.

[0141] Alternatively, as a different cutting procedure for the easy-open processing line 51, the first easy-open processing line 511 may be cut from the second side edge 16 to the end L1 of the first side edge 11 of the first easy-open processing line 511, and then the second easy-open processing line 512 may be cut from the upper edge 21 to the end L1 of the first side edge 11 of the first easy-open processing line 511. By doing so, the first easy-open processing line 511 is cut up to the end L1 of its first side edge 11, and when the second easy-open processing line 512 is subsequently cut, there is no need to change the direction of cutting, and the possibility of accidentally damaging the opening limiting section 54 is reduced.

[0142] In this way, the opening 56 for dispensing the contents of the resealable paper container 90 can be adjusted to an appropriate size according to the requirements, making it easy to control the amount of contents dispensed.

[0143] ≪Second aspect of the second embodiment≫ Figure 15 illustrates this embodiment. In this embodiment, the easy-open processing line 51 consists of a first easy-open processing line 511 and a second easy-open processing line 512, and the second easy-open processing line 512 is connected to the end L1 on the first side edge 11 side of the first easy-open processing line 511.

[0144] The difference between the second embodiment and the first embodiment is that the second easy-open processing line 512 is substantially perpendicular to the upper edge 21 and the first easy-open processing line 511, and connects the upper edge 21 and the first easy-open processing line 511 by the shortest distance. The advantage of this is that the cutting length of the second easy-open processing line 512 is the shortest possible.

[0145] In the cutting procedure for the easy-open processing line 51 of this embodiment, when the first easy-open processing line 511 is cut from the second side edge 16 side, and the second easy-open processing line 512 is cut by changing direction at the end L1 of the first side edge 11 of the first easy-open processing line 511, the change of direction is approximately a right angle and is difficult. To solve this problem, it is preferable that the second easy-open processing line 512 be cut from the upper edge 21 side. A notch 77 that initiates this may be provided on the upper edge 21.

[0146] Furthermore, the dimensions, shape, and materials of all components other than the easy-open processing wire 51 are the same as in the first embodiment.

[0147] Furthermore, according to this embodiment, the opening 56 for dispensing the contents of the resealable paper container 90 can be adjusted to an appropriate size as required, making it easy to control the amount of contents dispensed.

[0148] ≪Third Embodiment≫ This embodiment will be explained again using Figures 7 and 8. The second easy-open processing line 512 is inclined to move away from the first easy-open processing line 511 as it moves from the first easy-open processing line 511 toward the upper edge portion 21.

[0149] Furthermore, the dimensions, shape, and materials of all components other than the easy-open processing wire 51 are the same as in the first embodiment.

[0150] In the resealable paper container 90 of this embodiment, the cutting of the first easy-open processing line 511 progresses from the second side edge 16, and after reaching the end L1 of the first side edge 11 of the first easy-open processing line 511, the cutting transitions to the second easy-open processing line 512. Because the angle of this transition is gentle (obtuse angle), the transition can be made smoothly, and the risk of deviating from the easy-open processing line 51 is reduced.

[0151] Furthermore, according to this embodiment, the opening 56 for dispensing the contents of the resealable paper container 90 can be adjusted to an appropriate size as required, making it easy to control the amount of contents dispensed.

[0152] ≪Fourth Embodiment≫ This embodiment will be explained using Figure 16. The easy-open processing line 51 in this embodiment consists of a first easy-open processing line 511 and a second easy-open processing line 512.

[0153] The first easy-open processing line 511 extends in the transverse direction of the blank plate 93 and is located on the side of the dispensing opening 56, between the upper seal portion 53 and the chuck tape 61.

[0154] The end L1 of the first easy-open processing line 511 on the first side edge 11 is connected to the second easy-open processing line 512. The second easy-open processing line 512 smoothly connects to the first easy-open processing line 511 with a curve that is convex downward (to the left), crosses the upper seal portion 53, and reaches the upper edge 21 of the resealable paper container 90.

[0155] Here, the end L1 of the first side edge 11 of the first easy-open processing line 511 may be located between the second vertical folding line 13 and the third vertical folding line 14. The position of the end L1 of the first side edge 11 of the first easy-open processing line 511 ensures that the dispensing opening 56 is opened to an appropriate degree, making it easier to control the amount of contents dispensed.

[0156] If the end L1 of the first side edge 11 of the first easy-open processing line 511 is to the left of the second vertical fold line 13, the dispensing opening 56 becomes larger, and there is no significant difference between it and the opening that spans the entire width of the resealable paper container 90, making it impossible to control the amount of contents dispensed. If the end L1 of the first side edge 11 of the first easy-open processing line 511 is to the right of the third vertical folding line 14, the dispensing opening 56 becomes smaller, and a sufficient amount of the contents cannot be dispensed.

[0157] The second easy-open processing line 512 extends from the end L1 of the first side edge 11 of the first easy-open processing line 511 to the upper edge 21, but crosses the upper seal portion 53 along the way. Therefore, if the second easy-open processing line 512 is cut, the upper seal portion 53 is also cut.

[0158] Furthermore, the dimensions, shape, and materials of all components other than the easy-open processing wire 51 are the same as in the first embodiment.

[0159] The procedure for cutting the easy-open processing line 51 of this embodiment will now be described. First, the first easy-open processing line 511 is cut from the second side edge 16 to the end L1 of the first side edge 11 of the first easy-open processing line 511. Subsequently, the second easy-open processing line 512 is cut by changing direction at the end L1 of the first side edge 11 of the first easy-open processing line 511 and passing through the upper seal portion 53 to the upper edge 21, thereby cutting off the corresponding portion of the upper overlapping plate 34 and the side plate 412 of the second top portion. The remaining upper seal portion 53 then becomes the opening limiting portion 54.

[0160] In the resealable paper container 90 of this embodiment, the cutting of the first easy-open processing line 511 progresses from the second side edge 16, reaches the end L1 of the first side edge 11 of the first easy-open processing line 511, and when the cutting transitions to the second easy-open processing line 512, the transition curve is smoothly connected, allowing for a smooth transition and reducing the risk of the easy-open processing line 51 deviating.

[0161] According to this embodiment, the opening 56 for dispensing the contents of the resealable paper container 90 can be adjusted to an appropriate size as required, making it easy to control the amount of contents dispensed.

[0162] ≪Fifth Embodiment≫ In this embodiment, a notch 77 may be provided at either the second side edge 16 of the first easy-open processing line 511 or the upper edge 21 of the second easy-open processing line 512.

[0163] Each of the easy-open processing lines 51 is provided with a notch 77, which makes it easier to open the easy-open processing line 51 initially.

[0164] In this embodiment, since the main opening of the easy-open processing line 51 is by cutting the first easy-open processing line 511, the notch 77 may be provided only on the first easy-open processing line 511. Alternatively, the notch 77 on the first easy-open processing line 511 may be made larger than that of the other easy-open processing lines, or made more conspicuous by printing or the like.

[0165] If the direction of opening the second easy-open processing line 512 is assumed to be from the side of the first easy-open processing line 511 (inside side), then the second easy-open processing line 512 does not need to have a notch 77.

[0166] In Figures 6, 8 through 12, and 15 through 26, a notch 77 is provided on the second side edge 16 of the first easy-open processing line 511. In Figure 15, a notch 77 is provided on the upper edge 21 side of the second easy-open processing line 512. The above illustration is illustrative, and the location of the notch 77 is not limited to these and may be provided as appropriate.

[0167] Furthermore, the dimensions, shape, and materials of all components other than the easy-open processing wire 51 are the same as in the first embodiment.

[0168] Furthermore, according to this embodiment, the opening 56 for dispensing the contents of the resealable paper container 90 can be adjusted to an appropriate size as required, making it easy to control the amount of contents dispensed.

[0169] ≪Sixth Embodiment≫ Let us explain this embodiment again using Figure 8. In this embodiment, an opening limiting portion 54 is formed as shown in Figure 8, and the transverse range of the upper overlapping plate 34 on which the opening limiting portion 54 is formed extends from the first side edge 11 or the vicinity of the first side edge 11 to approximately the center of the upper overlapping plate 34 in the lateral width direction.

[0170] Furthermore, the dimensions, shape, and materials of all components other than the easy-open processing wire 51 are the same as in the first embodiment.

[0171] When viewing the upper edge of the open dispensing opening 56 of the resealable paper container 90 of this embodiment from above, it is clear that the opening is formed by utilizing three fold lines and the inner edge of the opening limiting portion 54. The three fold lines are the third vertical fold line 14b on the front, the third vertical fold line 14a on the back, and the fourth vertical fold line 15.

[0172] In the resealable paper container 90 of this embodiment, the width of the opening 56 for dispensing is approximately half the width of the resealable paper container 90, resulting in a good balance of opening and easy control of the amount of contents dispensed.

[0173] ≪Seventh Embodiment≫ This embodiment will be explained using Figure 17. In this embodiment, an opening limiting portion 54 is formed as shown in Figure 17, and the transverse range of the blank plate 93 formed by the opening limiting portion 54 extends from the first side edge 11 or the vicinity of the first side edge 11 to the second vertical fold line 13 or the vicinity of the second vertical fold line 13, which is closer to the first side edge 11, among the vertical fold lines that form the ridge portion 72d of the body portion 72 of the zippered paper container 90.

[0174] In this way, the width of the opening 56 for dispensing becomes the maximum possible within a range where there is a significant difference in the degree of opening compared to when the top 71 of the resealable paper container 90 is fully open (without the opening limiting portion 54). Beyond this point, there is no significant difference compared to when it is fully open.

[0175] Furthermore, the dimensions, shape, and materials of all components other than the easy-open processing wire 51 are the same as in the first embodiment.

[0176] When viewing the upper edge of the open dispensing opening 56 of the resealable paper container 90 of this embodiment from above, it is clear that the opening is formed using four fold lines. These four fold lines are the second vertical fold line 13, the third vertical fold line 14b on the front, the third vertical fold line 14a on the back, and the fourth vertical fold line 15.

[0177] In the resealable paper container 90 of this embodiment, the large opening 56 for dispensing makes it easy to dispense the contents, and the opening 56 is formed using four fold lines, making it easy to open.

[0178] According to this embodiment, the opening 56 for dispensing the contents of the resealable paper container 90 can be adjusted to an appropriate size as required, making it easy to control the amount of contents dispensed.

[0179] ≪Eighth Embodiment≫ This embodiment will be explained using Figure 18. In this embodiment, an opening limiting portion 54 is formed as shown in Figure 18, and the transverse range of the blank plate 93 formed by the opening limiting portion 54 extends from the first side edge 11 or the vicinity of the first side edge 11 to the third vertical fold line 14 or the vicinity of the third vertical fold line 14, which is closer to the second side edge 16, among the vertical fold lines that form the ridge portion 72d of the body portion 72 of the zippered paper container 90. In this way, the opening of the swing-out opening 56 is minimized for practical use.

[0180] Furthermore, when viewed from above, the open extension opening 56 is formed using two fold lines. These two fold lines are the third vertical fold line 14 and the fourth vertical fold line 15. In addition, the side plates 412 of the second top portion on both sides, which are connected to the second side edge portion 16 of the upper overlapping plate 34, curve, causing the extension opening 56 to open.

[0181] In the resealable paper container 90 of this embodiment, the dispensing opening 56 is appropriately small, making it easy to dispense small amounts of contents.

[0182] Furthermore, the dimensions, shape, and materials of all components other than the easy-open processing wire 51 are the same as in the first embodiment.

[0183] According to this embodiment, the opening 56 for dispensing the contents of the resealable paper container 90 can be adjusted to an appropriate size as required, making it easy to control the amount of contents dispensed.

[0184] ≪Ninth Embodiment≫ This embodiment will be explained using Figure 19. In this embodiment, an opening limiting portion 54 is formed as shown in Figure 19, and the transverse range of the blank plate 93 on which the opening limiting portion 54 is formed is as follows.

[0185] Here, let X be the distance between the third vertical fold line 14 and the fourth vertical fold line 15. The range of the opening limiting portion 54 is from the first side edge 11 or the vicinity of the first side edge 11 to a position that is a distance X from the third vertical bending line 14 in the direction of the first side edge 11.

[0186] When viewing the upper edge of the open dispensing opening 56 of the resealable paper container 90 of this embodiment from above, it is clear that the opening is formed by utilizing three fold lines and the inner end of the opening limiting portion 54. The three fold lines are the third vertical fold line 14b on the front, the third vertical fold line 14a on the back, and the fourth vertical fold line 15.

[0187] In the resealable paper container 90 of this embodiment, when viewed from above, the upper edge of the dispensing opening 56 has four equal sides, resulting in a well-balanced appearance.

[0188] Furthermore, the dimensions, shape, and materials of all components other than the easy-open processing wire 51 are the same as in the first embodiment.

[0189] According to this embodiment, the opening 56 for dispensing the contents of the resealable paper container 90 can be adjusted to an appropriate size as required, making it easy to control the amount of contents dispensed.

[0190] ≪First aspect of the tenth embodiment≫ This embodiment will be explained using Figure 20. An easy-peel portion 58 is provided on the inner side of the blank plate 93, including the upper seal portion 53. The easy-peel portion 58 is intended to obtain a seal of appropriate strength (weakness) when the upper seal portion 53 is joined. An appropriate seal means that the contents of the resealable paper container 90 do not leak, and the seal is strong enough to maintain its shape. It also means that the upper seal portion 53 can be peeled off by hand.

[0191] The easily peelable portion 58, which provides the upper seal portion 53 with the appropriate seal strength as described above, can be formed by applying an easy-peel heat-adhesive resin or a resin coating solution called an anti-heat sealant in a pattern using means such as gravure printing or flexographic printing, drying it, and then heat-sealing that portion.

[0192] The peelable weak seal portion preferably has sealing properties while also being peelable with moderate force, and its heat seal strength is preferably in the range of 1 to 20 N / 15 mm width.

[0193] Furthermore, if the easily peelable portion 58 is formed with an easy-peel heat-adhesive resin, the easy-peel heat-adhesive resin may be, for example, a resin composition obtained by appropriately mixing a polyolefin resin such as low-density polyethylene or ethylene-vinyl acetate copolymer with additives such as polystyrene, chlorinated polypropylene, polybutene-1, inorganic or organic fillers, polyethylene wax, or fatty acid amide.

[0194] The inorganic or organic fillers mentioned above can include powders of silica, calcium carbonate, talc, kaolin, clay, titanium dioxide, alumina, and aluminum hydroxide as inorganic fillers, with silica powder being particularly preferred. As organic fillers, powders of melamine resin, urea resin, alkyd resin, epoxy resin, acrylic resin, polystyrene, fluoroethylene resin, and silicone resin can be used.

[0195] The content of the above-mentioned additive in the above-mentioned resin composition is preferably in the range of 4 to 40% by mass. If the content of the additive is less than 4% by mass, the heat seal strength becomes too strong, and a good weak seal (easy peel) cannot be obtained. Conversely, if the content of the additive exceeds 40% by mass, the heat seal strength becomes too weak, which is undesirable.

[0196] The application amount of the easy-peel heat-adhesive resin described above is 2-8 g / m² when dry. 2 Preferably, 3-5 g / m 2 That is even more preferable.

[0197] Furthermore, when the easily peelable portion 58 is formed with an anti-heat sealant, a resin composition obtained by mixing an appropriate amount of release agent with the base resin can be used as the anti-heat sealant. For the resin of this base material, for example, ethylcellulose, cyclocompound rubber, or acrylic resin can be used, and for the release agent, for example, silicone resin, polyethylene wax, soy lecithin, or higher fatty acid amide can be used. When applying the anti-heat sealant, the amount applied should be small, and a thickness in the range of 0.3 to 2 μm is appropriate.

[0198] Furthermore, since the easily peelable portion 58 weakens the bonding force between the inner surfaces of the blank plates 93, it is desirable not to provide it in areas where a strong bond is desired. In this embodiment, it is desirable that the easily peelable portion 58 does not extend to the sealing area 371 and 372 on the side edge side. Considering manufacturing variations, it is desirable that the sealing area 371 and 372 on the side edge side and the easily peelable portion 58 are spaced apart. The spacing between them may be 0.5 mm or more and 15 mm or less.

[0199] If the gap is less than 0.5 mm, there is a risk that the side edge seal allowances 371 and 372 and the easily peelable portion 58 may overlap due to manufacturing variations. If the gap exceeds 15 mm, the opening when the top 71 of the resealable paper container 90 is fully opened becomes smaller, making it difficult to remove the remaining small amount of contents.

[0200] In order to dispense the contents of the resealable paper container 90 of this embodiment, the easy-open line 51 is cut and the upper seal portion 53 is partially removed to form a dispensing opening 56. As the contents are used up and the remaining amount decreases, it becomes difficult to shake out the contents remaining at the bottom of the resealable paper container 90. In that case, the top 71 of the resealable paper container 90 may be fully opened to remove the contents.

[0201] To fully open the seal, the upper seal portion 53 must be peeled off from the second side edge portion 16 of the upper seal portion 53, which is cut along the second easy-open processing line 512, to the first side edge portion 11. In this case, if an easy-peel portion 58 is provided at a position corresponding to the upper seal portion 53 on the inner surface of the blank plate 93, the remaining upper seal portion 53 (opening limiting portion 54) can be easily peeled off by hand, allowing the top portion 71 of the zippered paper container 90 to be opened across its entire surface.

[0202] As described above, the top 71 of the resealable paper container 90 opens completely, making it easy to dispense the remaining contents, and also easy to remove the contents with a spoon or similar utensil.

[0203] In Figure 20, the easy-peel section 58 is provided across almost the entire width of the top 71 of the resealable paper container 90 in the transverse direction. When the upper seal section 53 is cut along the easy-open line 51, the easy-peel section 58 on the cut portion is discarded. The upper seal section 53 remaining after the cut has easy-peel properties (opening properties by hand) due to the easy-peel section 58, and can be peeled off by hand when it is necessary to fully open the top 71 of the resealable paper container 90.

[0204] ≪Second aspect of the tenth embodiment≫ This embodiment will be explained using Figure 21. In this embodiment, the location of the easily peelable portion 58 is the region from the first side edge 11 of the upper seal portion 53 to the location including the second easily openable line 512. The easily peelable portion 58 and the first side edge portion 11 may be in contact or separated. The distance between them when separated is the same as in the first embodiment.

[0205] When opening the top 71 of the resealable paper container 90 by partially cutting it along the easy-open line 51, the portion that is discarded is provided with a minimal amount of the easy-peel section 58. Therefore, the area of ​​the easy-peel section 58 is small, resulting in reduced costs and processing effort.

[0206] Furthermore, an easy-peel portion 58 is provided in the upper seal portion 53, i.e., the opening-restricting portion 54, that remains after the easy-open processing line 51 is cut. Therefore, when opening the top portion 71 of the resealable paper container 90 to almost its entire surface, the remaining upper seal portion 53 (opening-restricting portion 54) can be easily peeled off by hand.

[0207] ≪Embodiment 11≫ This embodiment will be explained using Figure 22. In this embodiment, the location of the easily peelable portion 58 is the region from the first side edge 11 of the upper seal portion 53 to a position that does not come into contact with the second easily openable line 512. The easily peelable portion 58 and the first side edge portion 11 may be in contact or separated. The distance between them when separated is the same as in the first embodiment of the tenth embodiment.

[0208] Furthermore, the easy-peel processing section 58 and the second easy-open processing line 512 may be spaced apart. After the easy-open processing line 51 is cut and the dispensing opening 56 is opened, when using the resealable paper container 90, each time the resealable tape 61 is opened, a force is applied to the end of the opening limiting section 54 formed by the second easy-open processing line 512, attempting to peel off the opening limiting section 54. As a result, the opening limiting section 54 is gradually peeled off, and its transverse length decreases. Consequently, the dispensing opening 56 gradually becomes larger and deviates from the desired size.

[0209] In this embodiment, since the easy-peel processing portion 58 and the second easy-open processing line 512 are spaced apart, there is a region on the first side edge 11 of the second easy-open processing line 512 of the upper seal portion 53 that is not the easy-peel processing portion 58, and it is strongly bonded. Therefore, even if the end of the opening limiting portion 54 formed by the second easy-open processing line 512 receives the peeling force generated each time the chuck tape 61 is opened, peeling does not progress. As a result, the size of the dispensing opening 56 is maintained at the desired size.

[0210] The distance between the easily peelable section 58 and the second easily openable line 512 may be 0.5 mm or more and 15 mm or less. If the gap is less than 0.5 mm, there is a risk that the side edge seal allowance 37 and the easily peelable portion 58 may overlap due to manufacturing variations. If the gap exceeds 10 mm, the force required to fully open the top 71 of the resealable paper container 90 increases, resulting in poor peeling performance.

[0211] ≪Twelfth Embodiment≫ In this embodiment, as shown in Figure 23, an opening guide line 55 is provided on at least one of the top panels 33 of the zippered paper container 90, either on the front or back.

[0212] Furthermore, all dimensions, shapes, materials, etc., other than the opening guide line 55, are the same as in the first embodiment of the second embodiment. Furthermore, the opening guide line 55 is formed in the same way as other bending lines provided on the blank plate 93.

[0213] When the dispensing opening 56 of the resealable paper container 90 is opened, the top panel 33 deforms from a flat surface to a three-dimensional surface as the opening is made. In this case, the top panel 33 can deform even without the opening guide line 55, but if the opening guide line 55 is present, the opening guide line 55 will fold appropriately, making the deformation easier.

[0214] When the opening 56 for extending the pole opens, the projection (ear) portion 392 on the second top side of the second side edge 16 also deforms significantly, but at that time the diagonal bending line 172 on the second top side folds, making it easy to deform.

[0215] Therefore, in the resealable paper container 90 of this embodiment, the opening guide line 55 allows the dispensing opening 56 to be easily opened.

[0216] ≪First aspect of the thirteenth embodiment≫ This embodiment will be explained again using Figure 23. As shown in Figure 23, the inner reference point L4 of the opening auxiliary line 55 is defined as a point on the line of the first transverse bending line 22, which is perpendicular to the lower edge 26 from the end L3 of the second side edge 16 (inner side) of the opening limiting section 54.

[0217] The inner end 551 of the opening guide line 55 is located at or near the inner reference point L4 of the opening guide line 55. The outer end 552 of the opening guide line 55 is located at or near the second double-top intersection F2, which is the intersection point of the third vertical bend line 14 and the second horizontal bend line 23.

[0218] In other words, the opening guide line 55 lies on the line connecting the inner reference point L4 of the opening guide line 55 or its vicinity with the second double-height intersection point F2, which is the intersection of the third vertical bend line 14 and the second horizontal bend line 23, or its vicinity.

[0219] Furthermore, all dimensions, shapes, materials, etc., other than the opening guide line 55, are the same as in the first embodiment of the second embodiment.

[0220] In the paper container with a zipper 90 of this embodiment, an opening guide line 55 is provided in a place where the top plate 33 is likely to be deformed when opening the dispensing opening 56, making it easier to open the dispensing opening 56.

[0221] ≪Second aspect of the thirteenth embodiment≫ This embodiment will be explained using Figure 24. The opening guide line 55 in this embodiment lies on the same line as the opening guide line 55 in the first embodiment of the thirteenth embodiment shown in Figure 23, but is shorter.

[0222] The inner end 551 is located away from the inner reference point L4 of the opening guideline 55, and the outer end 552 may also be located away from the second two-point intersection F2. The distance between them may be between 2 mm and 10 mm.

[0223] In the resealable paper container 90 of this embodiment, the opening guide line 55 has sufficient flexibility, making it easy to open the dispensing opening 56. Furthermore, since the bending lines do not concentrate at the inner reference point L4 of the opening guideline 55 and the second intersection point F2 on the top side, the reduction in strength of the blank plate 93 at those locations can be reduced.

[0224] ≪Third aspect of the thirteenth embodiment≫ This embodiment will be explained using Figure 25. The opening guide line 55 in this embodiment lies on the same line as the opening guide line 55 in the first embodiment of the thirteenth embodiment shown in Figure 23, but is shorter.

[0225] The inner end 551 of the opening auxiliary line 55 may be located at or near the inner reference point L4 of the opening auxiliary line 55. The outer end 552 of the opening auxiliary line 55 may be located at a position spaced apart from the second two-top intersection F2. The spaced distance may be 2 mm or more and 20 mm or less.

[0226] In the zippered paper container 90 of the present embodiment, the opening auxiliary line 55 has sufficient refraction property, so that the dispensing opening 56 can be easily opened. Further, since folding lines do not concentrate at the second two-top intersection F2, a decrease in strength of the blank plate 93 at that location can be reduced. can be.

[0227] <<Fourth Aspect of the Thirteenth Embodiment>> The present aspect will be described with reference to FIG. 26. The opening auxiliary line 55 of the present aspect is on the line of the opening auxiliary line 55 of the first aspect of the thirteenth embodiment shown in FIG. 23, but is shorter.

[0228] The inner end 551 of the opening auxiliary line 55 may be located at a position spaced apart from the inner reference point L4 of the opening auxiliary line 55. The spaced distance may be 2 mm or more and 20 mm or less. The outer end 552 of the opening auxiliary line 55 may be located at or near the second two-top intersection F2.

[0229] In the zippered paper container 90 of the present aspect, the opening auxiliary line 55 has sufficient refraction property, so that the dispensing opening 56 can be easily opened. Further, since folding lines do not concentrate at the inner reference point L4 of the opening auxiliary line 55, a decrease in strength of the blank plate 93 at that location can be reduced. [Example]

[0230] Hereinafter, the present disclosure will be described more specifically with reference to examples. <<Example 1>> In Example 1, a paper container with a zipper 90 with the configuration shown in Figure 10 was manufactured using the blank plate 93 shown in Figure 7, which corresponds to the first aspect of the second embodiment.

[0231] Two blank plates 10a and 10b were prepared as shown in Figure 7, and their inner surfaces were aligned and placed on top of each other. As shown in Figure 8, the sealing portions 371 and 372 on both opposing side edges were heat-sealed, and the upper sealing portion 53 was also heat-sealed. The zipper tape 61 was also heat-sealed. In this way, an intermediate-stage zippered paper container (flat state) 91 was produced, with the bottom sealing portion 38 not yet sealed.

[0232] Next, as shown in Figure 9, the material was formed into a three-dimensional shape, and an intermediate-stage zippered paper container (folded state) 92 with an open bottom 73 was manufactured, and then the zippered paper container 90 of Example 1 was produced.

[0233] The laminated sheet used for the blank plate 93 had the following configuration. (Exterior side) Printed layer with image / design (gravure printing) / LDPE layer (thickness 20μm) (Nippon Polyethylene, LC520) / Paper base layer (Nippon Paper Industries, base paper for liquid paper containers) (150g / m²) 2 ) / EMAA (20μm) (Mitsui Dow Polychemicals, N0908N) / Silica-deposited PET (12μm) (Dai Nippon Printing, IB-PET-UBP) / LDPE layer (40 μm) (Nippon Polyethylene, LC520) (inner surface)

[0234] The manufacturing method for the laminated sheet described above will be explained. First, an LDPE layer (20 μm thick) was formed on the outer surface of the paper substrate layer by extrusion lamination. Next, silica-deposited PET (12 μm) was laminated to the inner surface of the paper substrate layer by extrusion lamination (sandwich lamination), with molten EMAA (20 μm) interposed in between.

[0235] Next, an LDPE layer (40 μm) was formed on the opposite side (inner surface) of the silica-deposited PET (12 μm) paper substrate layer by extrusion lamination. Next, a pattern was printed onto the outer surface of the LDPE layer (20 μm) formed on the outer surface of the paper substrate layer using a gravure printing machine. Furthermore, after printing on the paper substrate layer, an LDPE layer (20 μm) may be formed on the outer surface of the paper substrate layer by extrusion lamination. Alternatively, extrusion lamination to the outer surface after printing on the paper substrate layer is not required.

[0236] Furthermore, to improve the bonding strength between each bonding layer, anchor coating, corona treatment, flame treatment, etc. may be performed as needed. Alternatively, the molten resin may be treated with ozone.

[0237] Next, the laminated sheet was subjected to scoring and punching processes to complete the blank plate 93.

[0238] The zipper tape 61, which is heat-sealed and attached to the inner surfaces of the upper overlapping plate 34 and the top side plate 41 of the zippered paper container 90, has a two-layer laminated structure for both the male and female tape bodies. The resin layer on the side that is heat-sealed to the zippered paper container 90 is made of LLDPE, and the resin layer on the opposite side is made of MDPE. The fitting parts of both the male and female types are also made of LLDPE, and the width of the tape body is 13 mm in both cases.

[0239] The dimensions of the back blank plate 10a and the front blank plate 10b are rectangular, measuring 220 mm in length and 169 mm in width. A 7 mm wide first side edge seal allowance 371 is provided on the left first side edge 11, and a 7 mm wide second side edge seal allowance 372 is provided on the right second side edge 16. In addition, a bottom seal allowance 38 with a width of 10 mm was provided at the lower edge portion 26 of the lower side. Further, seal allowances for an upper seal portion 53 having a width of 7 mm are respectively provided in the vicinity of the upper overlapping plate 34 and the upper edge 21 of the top side plate 41.

[0240] On the blank plate 93, the upper overlapping plate 34, a first horizontal folding line 22, a top plate 33, a second horizontal folding line 23, a wall plate 31, a third horizontal folding line 24, and a bottom plate 35 are provided in this order sequentially from the upper edge 21 in the downward direction.

[0241] Further, a first top side plate 411 is provided outward on the left side of the upper overlapping plate 34 via a second vertical folding line 13, and a second top side plate 412 is provided outward on the right side of the upper overlapping plate 34 via a third vertical folding line 14.

[0242] Further, a first top-side protruding portion (ear) allowance 391 is provided outward on the left side of the top plate 33 via the second vertical folding line 13, and a second top-side protruding portion (ear) allowance 392 is provided outward on the right side of the top plate 33 via the third vertical folding line 14.

[0243] Further, a first side plate 321 is provided outward on the left side of the wall plate 31 via the second vertical folding line 13, and a second side plate 322 is provided outward on the right side of the wall plate 31 via the third vertical folding line 14.

[0244] Further, a first bottom-side protruding portion (ear) allowance 431 is provided outward on the left side of the bottom plate 35 via the second vertical folding line 13, and a second bottom-side protruding portion (ear) allowance 432 is provided outward on the right side of the bottom plate 35 via the third vertical folding line 14.

[0245] The completed substantially rectangular parallelepiped paper container is formed to have dimensions of 95 mm in width, 120 mm in height, and 60 mm in depth.

[0246] Then, on the upper overlapping plate 34 and the top side plate 41, when the inner surfaces of the two blank plates 10a and 10b are aligned and overlapped, a first easy-open processing line (perforation line) 511 is provided as a means of opening the container, as shown in Figure 7, at a position 8 mm below the upper edge portion 21, along with printing on the paper base material layer of the laminated sheet, in the transverse direction of the top portion 71 of the zippered paper container 90.

[0247] Furthermore, the second easy-open processing line 512 was provided so as to extend from the end L1 of the first side edge 11 of the first easy-open processing line 511 to the upper edge 21. The end L1 of the first side edge 11 of the first easy-open processing line 511 was located in the center of the width direction of the resealable paper container 90. The second easy-open processing line 512 was inclined to move away from the first easy-open processing line 511 as it approached the upper edge 21, and intersected the upper edge 21 at an angle of approximately 45°. Furthermore, the second easy-open processing line 512 also features printing.

[0248] Furthermore, below the first easy-open processing line 511, a 13mm wide zipper tape 61 is heat-sealed to the inner surfaces of the upper overlapping plate 34 and the top side plate 41 at a 5mm gap, in a direction that crosses the top 71 of the zippered paper container 90.

[0249] Furthermore, using the method described above, after joining the two blank plates 10a and 10b, heat-sealing the chuck tape 61, heat-sealing the side edge seals 371 and 372, and heat-sealing the upper seal portion 53, a notch 77 is provided on the second side edge 16 of the overlapping first easy-open processing line (perforation line) 511, and an intermediate stage zippered paper container (flat state) 91 is produced with the bottom 73 unsealed. (See Figure 8).

[0250] Next, the intermediate-stage zippered paper container (flat state) 91 is opened with a mandrel through the unsealed opening at the bottom 73, leaving the upper overlapping plate 34 intact. The top plate 33 below it is spread forward and backward along the first horizontal fold line 22, causing the upper overlapping plate 34 to stand upright. Below this, the top portion 71 formed by the top plate 33 is followed by a roughly rectangular body portion 72 in a horizontal cross-section (a plane roughly parallel to the bottom surface), and the intermediate-stage zippered paper container (folded box state) 92 is formed with the bottom 73 opening in a roughly rectangular shape. (See Figure 9).

[0251] Then, the overlapping upper overlapping plate 34 was bent towards the back top plate 33a. The upper overlapping plate 34, which is folded towards the back top panel 33a, is part of the components of the top section 71.

[0252] Furthermore, the top protrusions (ears) 74, which are connected to both the left and right sides of the top 71 of the resealable paper container 90, were joined to the body 72 of the resealable paper container 90. This joining was achieved by heat welding, which involved melting the LDPE layer on the lower surface of the top protrusions (ears) 74 and the LDPE layer on the surface of the body 72 with hot air.

[0253] Example 2 Figure 5 shows the blank plate 93 of the first embodiment. The blank plate 93 of the second embodiment differs from the blank plate 93 of the first embodiment only in the shape of the easy-open processing line 51; the other shapes, materials, and processing methods are the same. In this example, the easy-open processing line 51 connected the second side edge 16 to the upper edge 21 in a straight line.

[0254] Figure 6 is a front view showing the shape of the zippered paper container (flat state) 91 at an intermediate stage when manufacturing the zippered paper container 90 using the blank plate 93 shown in Figure 5. The easy-opening line 51 connects a notch 77 provided on the second side edge 16 to the upper edge 21, crossing the upper sealing portion 53 along the way.

[0255] Example 3 Figure 15 shows the shape of the paper container (flat state) 91 at an intermediate stage in the production of the resealable paper container 90. However, the resealable paper container 90 was made by preparing a blank plate 93 at the previous stage.

[0256] The only differences from Example 1 were the shape of the easy-open processing line 51 and the notch 77 machined at the position where the second easy-open processing line 512 and the upper edge 21 meet. The shape, material, and processing method of other parts were the same as in Example 1.

[0257] ≪Example 4≫ Figure 16 shows the shape of the paper container (flat state) 91 at an intermediate stage in the production of the resealable paper container 90. However, the resealable paper container 90 was made by preparing a blank plate 93 at the previous stage.

[0258] In this embodiment, the second easy-open processing line 512 is a curve that is smooth downwards (convex on the left side) from the end L1 on the first side edge 11 side of the first easy-open processing line 511, crosses the upper seal portion 53 and reaches the upper edge portion 21.

[0259] The only difference from Example 1 was the shape of the second easy-open processing line 512; the shape, material, and processing method of other parts were the same as in Example 1.

[0260] Example 5 Figure 17 shows the shape of the paper container (flat state) 91 at an intermediate stage in the production of the resealable paper container 90. However, the resealable paper container 90 was made by preparing a blank plate 93 at the previous stage.

[0261] Compared to Example 1 (Figure 8), the position of the second easy-open processing line 512 was moved laterally to the vicinity of the second vertical fold line 13 without changing its inclination, thereby reducing the lateral width of the opening limiting portion 54. The end of the opening limiting portion 54 on the second side edge 16 side was located near the second vertical fold line 13. As the second easy-open processing line 512 moved, the end L1 of the first side edge 11 of the first easy-open processing line 511 also moved to the vicinity of the second vertical folding line 13.

[0262] The only difference from Example 1 was the position of the easy-open processing line 51; the shape, material, and processing method of other parts were the same as in Example 1.

[0263] ≪Example 6≫ Figure 18 shows the shape of the paper container (flat state) 91 at an intermediate stage in the production of the resealable paper container 90. However, the resealable paper container 90 was made by preparing a blank plate 93 at the previous stage.

[0264] Compared to Example 1 (Figure 8), the position of the second easy-open processing line 512 was moved laterally to the vicinity of the third vertical fold line 14 without changing its inclination, thereby increasing the lateral width of the opening limiting portion 54. The end of the opening limiting portion 54 on the second side edge 16 side was located near the third vertical fold line 14. As the second easy-open processing line 512 moved, the end L1 of the first side edge 11 of the first easy-open processing line 511 also moved to the vicinity of the third vertical folding line 14.

[0265] The only difference from Example 1 was the position of the easy-open processing line 51; the shape, material, and processing method of other parts were the same as in Example 1.

[0266] Example 7 Figure 19 shows the shape of the paper container (flat state) 91 at an intermediate stage in the production of the resealable paper container 90. However, the resealable paper container 90 was made by preparing a blank plate 93 at the previous stage.

[0267] Compared to Example 1 (Figure 8), the position of the second easy-open processing line 512 was moved laterally to the position described below, without changing its tilt. The position was determined by the distance X (30 mm in this case) between the third vertical fold line 14 and the fourth vertical fold line 15. It was located at a distance X (30 mm in this case) from the third vertical fold line 14 in the direction of the first side edge 11. As the second easy-open processing line 512 moved, the end L1 of the first side edge 11 of the first easy-open processing line 511 also moved to the corresponding position.

[0268] The only difference from Example 1 was the position of the easy-open processing line 51; the shape, material, and processing method of other parts were the same as in Example 1.

[0269] Example 8 Figure 20 shows the shape of the paper container (flat state) 91 at an intermediate stage in the production of the resealable paper container 90. However, the resealable paper container 90 was made by preparing a blank plate 93 at the previous stage.

[0270] The only difference from Example 1 was the addition of the easily peelable section 58; the shape, material, and processing method of the other parts were the same as in Example 1. The easily peelable portion 58 was present over almost the entire area of ​​the upper sealing portion 53.

[0271] Furthermore, the easy-peel processing section 58 was spaced apart from the upper edge 21. This arrangement made it difficult for the two blank plates to separate unintentionally when a force was applied at the upper edge 21 that would cause the front blank plate 10b and the back blank plate 10a to separate, because the easy-peel processing section 58 was not present at the upper edge 21.

[0272] The easily peelable section 58 was coated with a silicone resin-based heat-sealing agent by printing.

[0273] ≪Example 9≫ Figure 21 shows the shape of the paper container (flat state) 91 at an intermediate stage in the production of the resealable paper container 90. However, the resealable paper container 90 was made by preparing a blank plate 93 at the previous stage.

[0274] The only difference from Example 1 was the addition of the easy-peel processing section 58; the shape, material, and processing method of other parts were the same as in Example 1. Furthermore, the difference from Example 8 was the area of ​​the easy-peel processing section 58, which extended from the first side edge 11 to the vicinity of the second easy-open processing line 512, including the second easy-open processing line 512. The easy-peel processing section 58 was not present on the second side edge 16 side of the upper seal section 53.

[0275] Example 10 Figure 22 shows the shape of the paper container (flat state) 91 at an intermediate stage in the production of the resealable paper container 90. However, the resealable paper container 90 was made by preparing a blank plate 93 at the previous stage.

[0276] The only difference from Example 1 was the addition of the easy-peel processing section 58; the shape, material, and processing method of other parts were the same as in Example 1. Furthermore, the difference from Example 8 was the area of ​​the easy-peel processing section 58, which extended from the first side edge 11 to the vicinity of the second easy-open processing line 512, excluding the second easy-open processing line 512 itself. The minimum distance between the easy-peel processing section 58 and the second easy-open processing line 512 was 5 mm.

[0277] Example 11 Figure 23 shows the shape of the paper container (flat state) 91 at an intermediate stage in the production of the resealable paper container 90. However, the resealable paper container 90 was made by preparing a blank plate 93 at the previous stage.

[0278] The only difference from Example 1 was the addition of the opening guide line 55; the shape, material, and processing method of other parts were the same as in Example 1. The opening guideline 55 was a straight line connecting the inner reference point L4 of the opening guideline 55 and the second double-point intersection F2.

[0279] Example 12 Figure 24 shows the shape of the paper container (flat state) 91 at an intermediate stage in the production of the resealable paper container 90. However, the resealable paper container 90 was made by preparing a blank plate 93 at the previous stage.

[0280] The only difference from Example 1 was the addition of the opening guide line 55; the shape, material, and processing method of other parts were the same as in Example 1.

[0281] The opening guide line 55 lies on the straight line connecting the inner reference point L4 of the opening guide line 55 and the second double-point intersection F2, and the inner end 551 of the opening guide line 55 does not reach the inner reference point L4 of the opening guide line 55. The distance between the inner reference point L4 of the opening guide line 55 and the inner end 551 of the opening guide line 55 was 5 mm.

[0282] Furthermore, the outer end 552 of the opening guide line 55 did not reach the second double-height intersection F2. The distance between the outer end 552 of the opening guide line 55 and the second double-top intersection F2 was 5 mm.

[0283] ≪Example 13≫ Figure 25 shows the shape of the paper container (flat state) 91 at an intermediate stage in the production of the resealable paper container 90. However, the resealable paper container 90 was made by preparing a blank plate 93 at the previous stage.

[0284] The only difference from Example 1 was the addition of the opening guide line 55; the shape, material, and processing method of other parts were the same as in Example 1.

[0285] The opening guide line 55 lies on the straight line connecting the inner reference point L4 of the opening guide line 55 and the second double-point intersection F2, and the inner end 551 of the opening guide line 55 reaches the inner reference point L4 of the opening guide line 55.

[0286] Furthermore, the outer end 552 of the opening guide line 55 did not reach the second double-height intersection F2. The distance between the outer end 552 of the opening guide line 55 and the second double-top intersection F2 was 10 mm.

[0287] ≪Example 14≫ Figure 26 shows the shape of the paper container (flat state) 91 at an intermediate stage in the production of the resealable paper container 90. However, the resealable paper container 90 was made by preparing a blank plate 93 at the previous stage.

[0288] The only difference from Example 1 was the addition of the opening guide line 55; the shape, material, and processing method of other parts were the same as in Example 1.

[0289] The opening guide line 55 lies on the straight line connecting the inner reference point L4 of the opening guide line 55 and the second double-point intersection F2, and the inner end 551 of the opening guide line 55 does not reach the inner reference point L4 of the opening guide line 55. The distance between the inner reference point L4 of the opening guide line 55 and the inner end 551 of the opening guide line 55 was 10 mm. Furthermore, the outer end 552 of the opening guide line 55 reached the second double-height intersection F2.

[0290] ≪Comparative Example 1≫ In Comparative Example 1, a paper container with a zipper, shown in Figure 2, was manufactured using a single blank plate 81 shown in Figure 1.

[0291] In Comparative Example 1, the blank plate 81 was first folded along the intermediate horizontal fold line (half-fold line) 821, and the inner surfaces of the front blank plate 81b (the side with the wall panel 831b) and the back blank plate 81a (the side with the wall panel 831a) were overlapped. The subsequent method for manufacturing the zippered paper container 80 was the same as in Example 1, except that the upper seal portion 53 was not formed. In addition, the shape of the easy-open processing line 851 was different, while the shape, material, and processing method of parts other than the top portion 871 were the same as in Example 1.

[0292] ≪Rating≫ 100 resealable paper containers were produced for each of Examples 1 to 14 and Comparative Example 1. In addition, when manufacturing the resealable paper container 80 of Comparative Example 1, there was a process of folding the blank plate 81 along the intermediate horizontal fold line (half-fold line) 821 (see Figure 1). During this process, the adjacent easy-open processing line (perforation line) 851 was sometimes mistakenly folded. When the easy-open processing line (perforation line) 851, which should not be folded, is folded, the blank plate 81 becomes a defective product, resulting in a loss.

[0293] This is because the easy-open processing line (perforation line) 851 has many cut sections (including half-cuts) to ensure easy opening, making it easy to bend unintentionally. The ease with which the easy-open processing line (perforation line) 851 bends is often about the same as the ease with which the intermediate horizontal fold line (half-fold line) 821 bends. When the resealable paper container 80 is manufactured, the intermediate horizontal fold line (half-fold line) 821 is carefully folded, but the adjacent easy-open processing line (perforation line) 851 may be bent by mistake.

[0294] Furthermore, if the intermediate transverse fold line (half-fold line) 821 is folded more carefully, the time required to manufacture the resealable paper container 80 increases. As a result, the manufacturing capacity of the resealable paper container 80 may decrease.

[0295] In contrast, in this disclosure, a paper container 90 with a zipper is made by joining two blank plates 10a and 10b, and therefore there is no intermediate transverse fold line, and consequently there is no process of folding the intermediate transverse fold line, so the defect of accidentally folding the easy-open processing line (perforation line) 851 as described above does not occur. Therefore, the paper container with a zipper 90 of this disclosure does not reduce its manufacturing capacity, and the occurrence of defects can also be reduced.

[0296] As described above, flour was filled into the resealable paper containers 90 of Examples 1 to 14 and Comparative Example 1 from the bottom 73. Next, the bottom 73 was folded in, and the bottom seal area 38 was heat-sealed, with the heat-sealed portion lying down toward the back bottom plate 35a. Furthermore, the bottom protrusions (ears) 75 protruding from both the left and right sides of the bottom 73 were folded toward the bottom plate 35 and heat-sealed toward the front bottom plate 35b and / or the front bottom seal area 38b, completing the packaging of the roughly rectangular resealable paper containers 90 of Examples 1 to 14 and Comparative Example 1.

[0297] Furthermore, the resealable paper containers 90 prepared as described above in Examples 1 to 14 and Comparative Example 1 were tested, particularly for their ease of opening, suitability for removing contents, and resealability with the zipper.

[0298] In the paper containers 90 with zippers of Examples 1 to 14, the packaging body was provided with an opening means at the top of the upper overlapping plate 34 and the top side plate 41, including a notch 77 and a first easy-open processing line (perforation line) 511 and / or a second easy-open processing line 512 (perforation line). This allowed the second side edge 16 of the upper seal portion 53 to be easily cut off, forming an opening limiting portion 54 of an appropriate size and creating a dispensing opening 56.

[0299] Next, the opening gripping portion 57 of the opened dispensing opening 56 was grasped and pulled apart on both sides, allowing the chuck tape 61 to be easily disengaged. Furthermore, the dispensing opening 56 at the top of the resealable paper container 90 was opened to a desired width, allowing the desired amount of flour filled inside to be dispensed.

[0300] Furthermore, after removing a portion of the flour, the resealable paper container 90 of Examples 1 to 14 could be easily reattached and the paper container resealed, allowing the remaining flour to be properly stored.

[0301] Furthermore, in the resealable paper containers 90 of Examples 8 to 10, when most of the flour had been used and the remaining amount was small, the front opening gripping area 57b and the back opening gripping area 57a were grasped by hand and spread wide outwards. This action peeled off the remaining upper seal portion 53 (opening limiting portion 54), opening the top portion 71 of the resealable paper container 90 almost entirely, allowing the flour to be removed without waste.

[0302] On the other hand, when the easy-open line 851 of the resealable paper container 80 of Comparative Example 1 was cut, the top 871 was completely open. When flour was dispensed in this state, it was difficult to control the amount dispensed, and a larger amount than desired was dispensed.

[0303] Furthermore, the resealable paper containers 90 of Examples 1 to 14 had a paper mass ratio of approximately 60% by mass to the total mass of the paper container, which fully met the standard of 51% by mass or more for paper containers. [Explanation of Symbols]

[0304] 10a Backside blank plate 10b Front blank plate 11 First side edge 12 First vertical fold line 13. Second vertical fold line 14 Third vertical fold line 15. Fourth vertical fold line 16 Second side edge 17. Diagonal fold line on the top 171 First upper section diagonal bend line 172 Second upper section diagonal bend line 18. Diagonal fold line on the bottom 181 First bottom diagonal fold line 182 Second bottom diagonal fold line 21 Upper edge 22 First transverse fold line 23 Second transverse fold line 24 Third transverse fold line 25. Fourth transverse fold line 26 Lower edge 31 Wall panel 32 Side plate 321 First side plate 322 Second side plate 33 Top plate 34. Upper overlapping plate 35 Bottom plate 37. Side edge sealing allowance 371 First side edge sealing amount 372 Second side edge seal allowance 38. Bottom seal cost 39. Protruding part (ear part) on the top 391 First top edge protrusion (ear) 392 Second celestial protrusion (ear portion) 41 Top side panel 411 Side plate of the first top section 412 Side panels of the second upper section 43. Bottom protrusion (ear portion) 431 First bottom protrusion (ear portion) 432 Second bottom protrusion (ear portion) 51 Easy-open processed wire 511 First easy-open processing line 512 Second easy-open processing line 52 Chuck tape joint 53 Upper seal section 54 Opening limiting section 55 Aperture guideline 551 Inner end of opening guide line 552 Outer end of opening guide line 56 Opening for extending 57. Opening and gripping fee 61 Chuck Tape 71 Top of a resealable paper container 71c Upper edge of the top part 71d Corner of the top 72 Body of a resealable paper container 72d Ridge of the fuselage 73 Bottom of a resealable paper container 73d Bottom corner 74. Top protruding part (ear part) 75 Bottom protrusion (ear portion) 76. Folded portion of the protruding part (ear) on the top. 77 Notches 80 Conventional paper containers with zippers 81 Conventional blank plate 81a Blank plate for the back side of conventional technology 81b Blank plate for the front surface of conventional technology 821 Conventional technology intermediate transverse folding line (half-fold line) 831 Conventional wall panels 851 Conventional Easy-Open Processing Wire 856 Conventional opening for swinging 861 Conventional technology chuck tape 871 Top of conventional paper container with zipper 872 Body of a conventional resealable paper container 874 Conventional technology: Top protruding part (ear part) 90. Paper containers with zippers for disclosure. 91. A resealable paper container (flat state) in an intermediate stage of the present disclosure. 92. A resealable paper container (unfolded) in an intermediate stage of this disclosure. 93 Blank plates of this disclosure E1 First one-point intersection (the intersection of the first vertical fold line and the first horizontal fold line) E2 First intersection of the two heavenly sections (intersection of the fourth vertical fold line and the first horizontal fold line) F1 Second point of intersection of the top section (intersection of the second vertical fold line and the second horizontal fold line) F2 Second intersection of the two vertices (intersection of the third vertical fold line and the second horizontal fold line) G1 First bottom intersection (intersection of the first vertical fold line and the fourth horizontal fold line) G2 First double-bottom intersection (intersection of the fourth vertical fold line and the fourth horizontal fold line) H1 Second bottom intersection (intersection of the second vertical fold line and the third horizontal fold line) H2 Second bottom intersection point (intersection of the third vertical fold line and the third horizontal fold line) L1 The end (branching point) on the first side edge of the first easy-open processing line. L3 Reference point of the opening restriction section (the intersection of the bottom edge of the upper seal section and the easy-open processing line) L4 Reference point on the inner side of the opening auxiliary rule line (a point that is vertically in the direction of the lower edge from the reference point of the opening restriction section, and lies on the line of the first horizontal bend line)

Claims

1. In a resealable paper container assembled by joining together two blank plates, each having a fold line and made of laminated sheets with paper as the base material, The top of the aforementioned zippered paper container consists of an upper overlapping plate, which is joined to the blank plates, and a top plate, which is connected to the bottom of the upper overlapping plate. The side plate of the first top section is connected to one end of the upper overlapping plate, A side plate of the second top section is connected to the other end of the upper overlapping plate, The top part has protruding parts on both the left and right sides, The torso is located below the aforementioned top part, The bottom portion located below the aforementioned body, An upper sealing portion crosses the upper edge or the vicinity of the upper edge of the upper overlapping plate, the side plate of the first top section, and the side plate of the second top section, It comprises a chuck tape located below the upper sealing portion, which crosses the upper overlapping plate, the side plate of the first top portion, and the side plate of the second top portion, An easy-peel processing section is provided in the upper seal section, and the easy-peel processing section does not extend to the area of ​​the seal allowance on the side edge. The distance between the easily peelable portion and the seal allowance on the side edge is 0.5 mm or more and 15 mm or less. An opening limiting portion is provided, in which the upper sealing portion is partially left intact. The opening limiting portion extends from one side edge of the blank plate, which is the first side edge, or the vicinity of the first side edge, toward the other side edge, which is the second side edge, and does not reach the second side edge. The aforementioned opening limiting portion is formed by cutting the easy-opening line, At least a portion of the aforementioned easy-open processing line extends between the upper sealing portion and the zipper tape. At least a portion of the aforementioned easy-open processing line crosses the upper sealing portion, A resealable paper container characterized in that the aforementioned easy-opening lines are formed by one or a series of lines.

2. In a resealable paper container assembled by joining together two blank plates, each having a fold line and made of laminated sheets with paper as the base material, The top of the aforementioned zippered paper container consists of an upper overlapping plate, which is joined to the blank plates, and a top plate, which is connected to the bottom of the upper overlapping plate. The side plate of the first top section is connected to one end of the upper overlapping plate, A side plate of the second top section is connected to the other end of the upper overlapping plate, The top part has protruding parts on both the left and right sides, The torso is located below the aforementioned top part, The bottom portion located below the aforementioned body, An upper sealing portion crosses the upper edge or the vicinity of the upper edge of the upper overlapping plate, the side plate of the first top section, and the side plate of the second top section, It comprises a chuck tape located below the upper sealing portion, which crosses the upper overlapping plate, the side plate of the first top portion, and the side plate of the second top portion, An opening limiting portion is provided, in which the upper sealing portion is partially left intact. The opening limiting portion extends from one side edge of the blank plate, which is the first side edge, or the vicinity of the first side edge, toward the other side edge, which is the second side edge, and does not reach the second side edge. The aforementioned opening limiting portion is formed by cutting the easy-opening line, At least a portion of the aforementioned easy-open processing line is a first easy-open processing line extending between the upper sealing portion and the zipper tape, At least a portion of the aforementioned easy-open processing line is a second easy-open processing line that crosses the upper seal portion, The aforementioned easy-open processing line is formed by a series of connected lines. An easy-peel processing section is provided in the upper seal section, and the easy-peel processing section does not extend to the area of ​​the seal allowance on the side edge. The easy-peel processing portion is located on the first side edge side, The distance between the easily peelable portion and the sealing allowance on the first side edge is 0.5 mm or more and 15 mm or less. The resealable paper container is characterized in that the easy-peel portion is a region including the second easy-opening line from the first side edge to the vicinity of the second easy-opening line, and the easy-peel portion is not present on the second side edge side of the upper seal portion.

3. In a resealable paper container assembled by joining together two blank plates, each having a fold line and made of laminated sheets with paper as the base material, The top of the aforementioned zippered paper container consists of an upper overlapping plate, which is joined to the blank plates, and a top plate, which is connected to the bottom of the upper overlapping plate. The side plate of the first top section is connected to one end of the upper overlapping plate, A side plate of the second top section is connected to the other end of the upper overlapping plate, The top part has protruding parts on both the left and right sides, The torso is located below the aforementioned top part, The bottom portion located below the aforementioned body, An upper sealing portion crosses the upper edge or the vicinity of the upper edge of the upper overlapping plate, the side plate of the first top section, and the side plate of the second top section, It comprises a chuck tape located below the upper sealing portion, which crosses the upper overlapping plate, the side plate of the first top portion, and the side plate of the second top portion, An opening limiting portion is provided, in which the upper sealing portion is partially left intact. The opening limiting portion extends from one side edge of the blank plate, which is the first side edge, or the vicinity of the first side edge, toward the other side edge, which is the second side edge, and does not reach the second side edge. The aforementioned opening limiting portion is formed by cutting the easy-opening line, At least a portion of the aforementioned easy-open processing line extends between the upper sealing portion and the zipper tape. At least a portion of the aforementioned easy-open processing line crosses the upper sealing portion, The aforementioned easy-open processing line is formed by one or a series of lines. An easy-peel processing section is provided in the upper seal section, and the easy-peel processing section does not extend to the area of ​​the seal allowance on the side edge. The aforementioned easy-peel processing portion is located on the first side edge and does not intersect with the easy-open processing line. The distance between the easily peelable portion and the sealing allowance on the first side edge is 0.5 mm or more and 15 mm or less. A resealable paper container characterized in that the distance between the easy-peel portion and the easy-open line is 0.5 mm or more and 15 mm or less.

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