JP5848051B2 - Packaging box - Google Patents

Description

  The present invention relates to a packaging box that can be easily separated into two and opened.

  Conventionally, a twist-opening type packaging box is known as a packaging box that can be separated and opened (see, for example, Patent Document 1). Specifically, it has a quadrangular prism shape having four side surfaces connected in the circumferential direction via bent portions, and the side surfaces are continuously connected in the circumferential direction to the intermediate portion in the central axis direction of each side surface portion. A perforated line is formed. This twist-opening packaging box can be opened by being separated into two through perforations by twisting with both ends.

  On the other hand, a twisted polygonal column-like packaging box is known as a packaging box with a change in design (for example, see Patent Document 2). In the case of a normal polygonal column, the peripheral side portion is formed by connecting a plurality of side surface portions in the circumferential direction via a bent portion extending in the central axis direction. In addition, at least an intermediate region in the length direction of each bent portion has an inclination angle in the same direction in the circumferential direction with respect to the central axis direction.

JP 2009-91038 A U.S. Pat. No. 3,912,156

  However, the conventional twist-open packaging box has a problem that when it is twisted and opened, the box is largely crushed and deformed before being cut along the perforation, so that it cannot be opened. Especially in the case of a child, the hand is often gripped and it is difficult to open it. In addition, if the contents are hard, the crush of the box is supported by the contents and can be opened, but if the contents are soft or fragile, if you try to force open, There is also a problem that the contents are easily crushed or broken.

  On the other hand, the twisted-polygonal packaging box is intended to be a package with a changing appearance. Patent Document 2 discloses that the twisting-opening packaging box is used as a twist-opening packaging box. There is no disclosure of any special benefits from using it.

  The present invention has been made in view of the above problems of the conventional twist-open packaging box, and an object thereof is to provide a twist-open packaging box that can be easily and reliably opened without being largely crushed. To do.

For the above-mentioned purpose, the present invention comprises a plurality of side portions connected in the circumferential direction via bent portions bent in a mountain , and at least an intermediate region in the length direction of each bent portion is in the central axis direction. by being formed have a tilt angle in the same direction in each circumferential direction against, without the polygonal shape twisted in without circumferential direction that each side portion is valley-folded in a diagonal direction, yet each The present invention provides a packaging box in which a perforation capable of continuously separating each side surface portion in the circumferential direction is formed at an intermediate portion in the central axis direction of the side surface portion.

Further, the present invention is, before Symbol wherein are cut portion of the perforations are formed in the bent portion, the cut portion formed in the bent portion, the end portion of the bent portion of the cut portion adjacent to each on both sides It has as a 1st desirable mode that it has shifted in the direction of a central axis from the extension line along the direction.

Moreover, this invention has as a 2nd preferable aspect that the said side part is comprised with paper at least and the paper grain of the paper which comprises this side part has faced the circumferential direction.

Furthermore, this invention has as a 3rd preferable aspect that the said perforation is formed in the waveform.

  In addition, the center axis direction in the present invention refers to a facing direction of the end surface portion in the twisted polygonal column.

  The packaging box according to the present invention has both end portions because at least the intermediate region in the length direction of each bent portion is a twisted polygonal column having the same inclination angle in the circumferential direction with respect to the central axis direction. When twisted, the twisting force acts on each bent portion with an inclination rather than at a right angle. Since the bent portion is less likely to be pushed in when the twisting force acts at a right angle than when the twisting force acts at a right angle, the packaging box of the present invention has a normal polygonal column (no twisting around the central axis). Compared to a twist-open packaging box using a (polygonal column) box, it is less likely to be crushed when opened. Therefore, it is possible to prevent deformation due to large crushing that cannot be opened, and even children can easily open, and even if the contents are soft or fragile, these contents are damaged when opened. This can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the packaging box which concerns on the 1st example of this invention, (a) is a front perspective view of the state which closed the end surface part, (b) is a rear perspective view of the state which closed the end surface part, (c) is The front perspective view of the state which made the end surface part half open, (d) is a back perspective view of the state which made the end surface part half open. It is the expanded view seen from the outer surface side of the packaging box shown by FIG. It is a figure which shows the example of the formation state of the perforation near a bending part. It is a front perspective view of the packaging box which concerns on the 2nd example of this invention. It is the expanded view seen from the outer surface side of the packaging box shown by FIG. It is the expanded view seen from the outer surface side of the packaging box which concerns on the 3rd example of this invention. It is a figure which shows the main dimensions of the packaging box created by the Example and the comparative example.

  The present invention will be described below with reference to the drawings. In the drawings referred to below, the same reference numerals indicate the same components.

  First, based on FIG.1 and FIG.2, the packaging box which concerns on the 1st example of this invention is demonstrated.

  As shown in FIG. 1, the packaging box of the present example is located between two end face parts 1 and 2 that are parallel to each other and parallel to each other, and between the both end face parts 1 and 2, and a bent part in the circumferential direction. And four side surface portions 7 to 10 connected through 3 to 6. The end surface portion 1 is connected to one end (upper end in the drawing) of the side surface portion 7 via a hinge portion 11, and the end surface portion 2 has a hinge portion 12 at the other end (lower end in the drawing) of the side surface portion 8. Are connected through. Each of the side surface portions 7 to 10 has bent portions 3 to 6 having an inclination angle θ (see FIG. 1A) in the same direction in the circumferential direction with respect to the central axis direction which is the opposing direction of the both end surface portions 1 and 2. The packaging box has a twisted quadrangular prism shape.

  Flap portions 17 and 18 are connected to one end of the side surface portions 8 and 9 adjacent to the side surface portion 7 to which the end surface portion 1 is connected via hinge portions 13 and 14, respectively. Flap portions 19 and 20 (see FIG. 2) are provided at the other end of the split piece 10a of the side surface portion 10 adjacent to the side surface portion 8 to which the end surface portion 2 is connected and the side surface portion 7 via hinge portions 15 and 16, respectively. It is connected. Each flap part 17-20 protrudes to the opening part side of the end part, and the end face parts 1 and 2 are respectively provided with the insertion pieces 23 and 24 connected to the front ends via hinge parts 21 and 22, respectively. It is inserted into the part and covers the opening.

  A perforation 25 is formed at an intermediate portion in the central axis direction of each side surface portion 7 to 10 so that each side surface portion 7 to 10 can be continuously separated in the circumferential direction when the both side portions are twisted.

  As shown in FIG. 2, the side surface portions 7 to 10 in the development box are partitioned by crease lines 3 ′ to 6 ′. The side surface portion 7 to which the end surface portions 1 are connected is located in the center of the development box, and the side surface portion 7 and the side surface portions 8 and 9 adjacent to the left and right sides thereof form a parallelogram. The other side surface portion 10 is divided into divided pieces 10a and 10b, and the entire shape when the divided pieces 10a and 10b are bonded to each other via the adhesive margin portion 26 is the same parallelogram as the side surface portions 7 to 9. It is formed as follows. The crease lines 3 ′ to 6 ′ provided between the side surface parts 7 to 10 are bent to form the bent parts 3 to 6 in FIG. 1.

  Each of the crease lines 3 'to 6' has an inclination angle θ in the same direction with respect to the central axis direction when assembled as a box. The inclination angle θ of each of the bent portions 3 to 6 in FIG. 1 and the inclination angle θ of each of the crease lines 3 ′ to 6 ′ are the same and are preferably 5 degrees to 20 degrees. If the inclination angle θ is too small, it will be difficult to prevent the box from being crushed when opened, and if it is too large, it will be difficult to assemble the box.

  One end face 1 is connected to one end of the side face 7 via a crease line 11 ′. Flap portions 17 and 18 positioned on the left and right sides of the end surface portion 1 are connected to one end of the side surface portions 8 and 9 adjacent to the side surface portion 7 via folding lines 13 'and 14'. The other end face 2 is connected to the other end of the side face 8 via a crease line 12 '. Further, on one end of the side surface portion 10 adjacent to the side surface portion 8 and the other end of the side surface portion 7, flap portions 19 and 20 positioned on the left and right sides of the end surface portion 2 are provided with crease lines 15 'and 16'. Are connected through. These crease lines 11 ′ to 16 ′ are all mountain-folded to form the hinge portions 11 to 16 in FIG. 1, and the end surface portion 1 and the flap portions 17 to 20 are respectively connected to the side surface portions. It can be tilted with respect to 7-10.

  Insertion pieces 23 and 24 are connected to the tips of the end face portions 1 and 2 via folding lines 21 'and 22', respectively. The crease lines 21 ′ and 22 ′ are folded in a mountain to form the hinge portions 211 and 22 of FIG. 1 so that the insertion pieces 23 and 24 can be tilted with respect to the end surface portions 1 and 2 to which they are connected. Is.

  The perforation 25 is formed in the center axial direction intermediate part of the side parts 7-10 across the side parts 7-10 including the glue margin part 26 whole. The formation position of the perforation 25 is normally the central portion in the central axis direction of the side surface portions 7 to 10, but it can also be provided at a position offset toward one end surface portion 1 or the other end surface portion 2 side.

  In the present invention, the perforation 25 is formed by intermittently forming cuts, for example, by using cuts having a length of about 2 to 7 mm intermittently with an interval of about 0.5 to 2 mm. it can. The perforations 25 may be provided in a state where all the cuts are arranged in a straight line, but as shown in FIG. 3, on the bent portions 3 to 6 (folded lines 3 ′ to 6 ′). The cut portion (corner cut portion) 27 formed in the direction of the center axis direction from the extension line along the direction of the end portions on the bent portions 3 to 6 side of the cut portions (adjacent cut portions) 28 and 28 adjacent to each other. It is preferable to make them shift. In FIG. 3A, the adjacent cut portions 28 and 28 are linear, and the position of the corner cut portion 27 is shifted from the position of the adjacent cut portions 28 and 28 in the central axis direction. (B) is bending the ends of the adjacent cut portions 28, 28 on the side of the bent portions 3-6 in the direction of the central axis, thereby changing the position of the corner cut portion 27 to the bent portions 3 of the adjacent cut portions 28, 28. It is shifted in the direction of the central axis from the extended line along the direction of the end portion on the 6 side. (C) The end of the adjacent notches 28, 28 on the corner notches 27 side is formed in a Y shape, so that the positions of the corner notches 27 are changed to the side of the bent portions 3-6 of the adjacent notches 28, 28. It is shifted in the direction of the central axis from the extended line along the direction of the end. If it does in this way, it can prevent that the perforation 25 tears carelessly from the position of the bending parts 3-6 during the assembly operation | work of a box, or after an assembly.

  The opening of the present packaging box as described above can be performed by twisting both ends as in the conventional twist-opening packaging box. In the packaging box of the present invention, since the twisting force acts obliquely with respect to the bent portions 3 to 6, the bent portions 3 to 6 are hard to be pushed inward, and can be easily opened without greatly crushing the box. it can. This packaging box usually comprises the whole or at least the side portions 7 to 10 of paper. In this case, it becomes easier to tear along the perforation 25 if the paper constituting the side portions 7 to 10 is oriented in the circumferential direction. Further, when combined with the positional shift between the corner cutout portion 27 and the adjacent cutout portions 28, 28, the positional shift of the corner cutout portion 27 is in the direction of the central axis, so that it is difficult to tear, preventing inadvertent tearing, and perforation. Both the ease of tearing along 25 can be satisfied.

  The packaging box which concerns on the 2nd example of this invention with FIG.4 and FIG.5 is demonstrated.

  The packaging box of this example is basically the same as the packaging box according to the first example described above, but the bent portions 3 to 6 (folded lines 3 ′ to 6) have the inclination angle θ. 6 ′), only the middle portion in the central axis direction extends at both ends in the central axis direction in a direction parallel to the central axis. Such bent portions 3 to 6 (folded lines 3 'to 6') can be changed in design by adjusting the ratio between the both end portions and the intermediate portion.

  The packaging box according to the third example of the present invention shown in FIG. 6 is different from the packaging box according to the first example in that the perforation 25 forms a waveform. If such a perforation 25 is used, it can be made difficult to break at the perforation 25 part in the blank state, and the occurrence of tearing during the manufacturing process can be prevented by the strength reduction caused by the breakage at the perforation 25 part. Can do.

  Although the examples described above are all quadrangular prisms, the packaging box of the present invention can be a triangular prism or a polygonal prism more than a pentagonal prism as long as it is a polygonal prism. Moreover, it can also be set as the polygonal column from which the magnitude | size of the one end surface part 1 and the other end surface part 2 differs.

Examples 1-4
Using “N Pearl Card” manufactured by Mitsubishi Paper Industries Ltd. having a basis weight of 310 g / m ^2, a twist-opening packaging box having a twisted quadrangular prism shape was created, and the unsealing property was examined.

  The shape of the packaging box is a twisted quadrangular prism shape with a length of 150 mm whose end face is a 40 mm square, and the main dimensions are shown in FIG. The unit of the dimension shown in FIG. 7 is mm. The dimensions a, b, and c shown in FIG. The case of a = c = 0 in the first embodiment is the case of the first example described with reference to FIGS.

The perforation is a dashed straight line in which straight cut portions with a length of 4.5 mm and non-cut portions with a width of 1 mm are alternately located, and the cut portions (corner cut portions) on the bent portions are not shifted. It was formed continuously in the circumferential direction at the center of the side surface in the central axis direction. Further, the paper eyes on the side portions were directed in the circumferential direction. In the opening test, a torque meter is set, the torque strength required for opening is measured, and the opening with the torque meter is performed three times by adding twist by hand, and the opening is performed once by hand without a torque meter. It was. The results are shown in Table 2. The criteria for the evaluation results in Table 2 are as follows.
“◎”: When opened with almost no crushing “○”: When opened with slight crushing “△”: When crushing occurred but opened, “×”: Crushed greatly, but partially opened Or if it could not be opened at all

Examples 5-8
Moreover, the packaging box similar to Examples 1-4 was created except having made the paper eye | texture in the side part into the center axis direction, and each opening with a torque meter and opening by hand were performed once. Table 3 shows the dimensions a, b, and c shown in FIG.

Comparative Example 1
A packaging box similar to that of Examples 1 to 4 was prepared and opened except that the bent portion was a square column without twisting in the central axis direction. As a result, both opening with a torque meter and opening with a hand were greatly crushed and could not be completely opened, and the evaluation was “x”.

Examples 9, 10
The perforation is a broken line in which straight cut portions having a length of 4.0 mm and non-cut portions having a width of 1 mm are alternately positioned, and the corner cut portions are formed from adjacent cut portions as shown in FIG. A packaging box similar to Example 1 (Example 9) and a packaging box similar to Example 4 (Example 10) except for shifting by 1 mm in the central axis direction were prepared, and each opening with a torque meter was performed three times. Opened by hand once. The results are shown in Table 5.

Example 11
Other than using paper with a basis weight of 260 g / m ² , a perforated line with a straight cut portion having a length of 6.0 mm and a non-cut portion having a width of 1.0 mm are alternately arranged. When the packaging box similar to Examples 1-4 was created and the opening test was done, the opening property more than evaluation "(circle)" was obtained in all.

DESCRIPTION OF SYMBOLS 1, 2 End surface part 3-6 Bending part 3'-6 'Folding line 7-10 Side part 10a, 10b Divided piece 11-16 Hinge part 11'-16' Folding line 17-20 Flap part 21,22 Hinge part 21 ', 22' Folded crease line 23, 24 Insert piece 25 Perforation 26 Glue 27 Cut part (Square cut part)
28 Notch (adjacent notch)

Claims (4)

  A plurality of side portions connected in the circumferential direction via bent portions that are folded in a mountain, and at least intermediate regions in the length direction of the respective bent portions are inclined in the same direction in the circumferential direction with respect to the central axis direction. By being formed with a corner, each side surface portion is formed in a polygonal column shape twisted in the circumferential direction without being valley-folded in a diagonal direction, and at the middle portion in the central axis direction of each side surface portion The packaging box is characterized in that perforations capable of continuously separating the side portions in the circumferential direction are formed. A cut portion of the perforation is formed in the bent portion, and the cut portion formed in the bent portion is on an extension line along the direction of the end portion on the bent portion side of adjacent cut portions adjacent to each other. The packaging box according to claim 1, wherein the packaging box is displaced in a central axis direction. The packaging box according to claim 1 or 2 , wherein at least the side surface portion is made of paper, and a paper pattern of the paper constituting the side surface portion is oriented in a circumferential direction. Packaging box according to any one of claims 1 to 3, characterized in that said perforations are formed in the waveform.

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