JP6218629B2 - Easy-open packaging box - Google Patents

Description

  The present invention relates to a paper box that is used for packaging products and has a function that can be easily opened.

  Conventionally, in Patent Document 1 below, as shown in FIG. 7, an inner lid flap 53 and an outer lid flap 54 are extended from a pair of side plates 51, and an end flap 55 is extended from another pair of end plates 52. 54, a cut line 57 where the cut line and the connecting part are intermittently inserted is formed in a C shape from the central part toward both ends of the one side plate 51, and an arc-shaped cut line 58 is inserted in the central part. A packaging box having the inside region of the opening as the opening start portion 59 is described.

  When packaging a product such as food in this packaging box, the end flap 55 is folded inward and then folded so that the inner lid flap 53 and the outer lid flap 54 are sequentially stacked, and the outer lid flap 54 is cut along the cut line 58. At the front end side, the inner lid flap 53 is attached and sealed.

  When opening the sealed packaging box in this way, if the opening start portion 59 is pushed in and bent so that the outer lid flap 54 is depressed, the connecting portion of the cut line 57 is broken and the cut line 57 is broken. Since the outer lid flap 54 is cut along the inner lid flap 53, the inner lid flap 53 and the outer lid flap 54 can be opened.

Japanese Patent No. 4611718

  However, the packaging box as described above cannot be widely opened across a plurality of surfaces in an opened state, and cannot be used for displaying products in a tray state.

  In view of this, an object of the present invention is to provide a packaging box that can be easily opened and greatly opened when a product is displayed.

  In order to solve the above-mentioned problem, this invention puts a cut line between the cut line and the connection part on the wall surface, causes a force to act on the wall surface from the opening start part facing the cut line, and along with the breakage of the connection part, In the packaging box that is opened by cutting the wall surface along the cut line, a turning part that changes direction is provided at a position away from the part where the opening start part of the cut line faces, and faces the inside of the turning part. The part was made into the opening assistance part which a connection part fractures | ruptures by pushing.

  Moreover, the guide ruled line which makes the pushing easy is put in the said opening assistance part.

  Furthermore, the dimension of the connecting part of the turning part in the cut line is set to be large, and the dimension of the connecting part of the other part is set to be small.

  In the packaging box according to the present invention, when opening, firstly opening the opening assisting part and breaking the connecting part of the turning part of the cut line facing the part, a slight force is applied to the wall surface starting from the opening start part. By simply making it act, it is possible to break the connecting portion of the other part of the score line and expose the product in a state where it is greatly opened.

The figure which shows the blank of the easy-open packaging box which concerns on this invention Enlarged view of the opening assist area The perspective view which shows the packaging state of an easy-open packaging box same as the above The perspective view which shows the state which pushed in the opening assistance part same as the above The perspective view which shows the state which pulled up the cut part from the opening start part same as the above The perspective view which shows the display state which removed the cutout part same as the above and made it tray shape The perspective view which shows the packaging state of the conventional easy-open packaging box

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  This packaging box is of a deep type whose height is greater than the depth, and is formed from a blank shown in FIG. 1 using corrugated cardboard having a thickness of about 2 mm called a delta flute.

  In this blank, the side plate 2, the rear plate 3, and the side plate 2 are sequentially connected in the horizontal direction to one side end of the front plate 1, and the passage piece 4 is connected to the other side end of the front plate 1. ing. A bottom plate 5 is connected to the lower ends of the pair of side plates 2, and a bottom plate 6 having an oblique fold line on one side is connected to the lower ends of the front plate 1 and the rear plate 3. A lid receiving piece 7 is connected to the upper ends of the pair of side plates 2, and a cover plate 8 and an insertion piece 9 are sequentially connected to the upper end of the front plate 1.

  The front plate 1 and one side plate 2 connected to the front plate 1 and the passage piece 4 and the other side plate 2 are provided with a cut line 10 where the cut and the connecting portion are intermittently connected.

  The cut line 10 includes a front cut portion 10a extending in the horizontal direction at the front portion of the front plate 1 and the side plate 2 and a lower portion of the passage piece 4, and a vertical portion extending in the vertical direction at the rear portion of the side plate 2. A cut portion 10b, a turning portion 10c that is connected to the horizontal cut portion 10a and the vertical cut portion 10b and is curved so as to change direction, and a boundary between the side plate 2 and the lid receiving piece 7 from the upper end of the vertical cut portion 10b. And an upper cut portion 10d extending to the rear plate 3 along the upper surface.

  The horizontal cut portion 10a, the vertical cut portion 10b, and the upper cut portion 10d have a perforated shape in which a straight line or a slightly curved cut is interrupted, and the turning portion 10c has a central cut serving as a starting end of cutting. The ridge-like cuts called zipper type are assumed to be intermittently interrupted.

  In the front plate 1, the crossing portion 10 a is curved with a large curvature so as to protrude downward, and a portion facing the upper side of the central portion of the crossing portion 10 a is an opening start portion 11. The unsealing start portion 11 is formed by making a cut 11a upward from the cut of the transverse cut portion 10a, and putting arcuate guide ruled lines 11b on both sides thereof.

  In the side plate 2, the cross-cut portion 10 a rises with a gentle slope toward the rear plate 3, and the vertical cut portion 10 b is vertical.

  And the part which faces the inside of the turning part 10c is made into the opening assistance part 12, and in order to make the opening assistance part 12 easy to push in, the turning part 10c of the horizontal cutting part 10a and the vertical cutting part 10b, Guiding ruled lines 12a extending between the connecting portions are inserted. The guide ruled line 12a is a ruled line pressed from the back side of the corrugated cardboard, and both ends thereof are bent from the middle part of the oblique line and approach the horizontal cut part 10a and the vertical cut part 10b at a deep angle.

  Here, as shown in FIG. 2, the dimension α of the connecting portion of the turning portion 10c in the score line 10 is set to be larger than the dimension β of the connecting portion of the other part. Specifically, the dimension α is about 4.3 mm, and the dimension β of the vertical cut portion 10b is about 2 mm.

  In general, at least two connecting portions of the turning portion 10c are provided with a dimension α of 3.5 mm or more, and the connecting portions of other portions have the size β of the connecting portion of the turning portion 10c. The pitch is smaller than that of the connecting portion of the turning portion 10c.

  A packaging box made of such a blank is bent along the boundary between the front plate 1 and the one side plate 2 and the boundary between the rear plate 3 and the other side plate 2 during the production, and the passage piece 4 is folded on the other side. While being affixed to the side plate 2, the folded portion is affixed to the bottom plate 5 in a folded state while the bottom plate 6 is folded along the fold line in the oblique direction. Since this bending and sticking process can be performed using existing gluers, no additional capital investment is required.

  And when packaging goods, such as a retort food, as shown in FIG. 3, a square cylinder-shaped surrounding wall is formed from the front plate 1, a pair of side plate 2, and the rear plate 3, and each pair of bottom plates 5, After forming the bottom wall from 6 and storing the product, the lid receiving piece 7 is folded inward, the lid plate 8 is folded rearward and overlapped with the lid receiving piece 7, and the insertion piece 9 is attached to the rear plate 3 and the lid. It is inserted between the receiving pieces 7 and sealed.

  On the other hand, when displaying the product at the store, first, as shown in FIG. 4, the opening assisting portion 12 is pushed in to break the connecting portion of the turning portion 10c of the score line 10, and then in FIG. As shown, the opening start part 11 is pushed in, the part above the cross-cut part 10a of the front plate 1 is pulled up, the connecting part of the cross-cut part 10a and the vertical cut part 10b is broken, and the top-cut part 10d The connecting portion is also broken.

Accordingly, the upper portion than the transection portion 10a of the front plate 1, the upper front than transection portion 10a and Tatesetsu portion 10b of the side plate 2 connected to both sides, a lid receiving piece 7 continuous to, the cover plate When the 8 and the insertion piece 9 are removed as a unit, as shown in FIG. 6, the tray-like portion having a large opening on the front surface, both side surfaces, and the top surface remains, and the product G is exposed from the tray-like portion. Become.

  Thus, in the said packaging box, since the opening assistance part 12 has faced the turning part 10c of the score line 10, when opening the opening assistance part 12 when opening, the connection part of the turning part 10c will be easy. After that, by simply applying a slight pulling force to the front plate 1 with the opening start portion 11 as a starting point, the connecting portion of the horizontal cut portion 10a, the vertical cut portion 10b, and the upper cut portion 10d is broken. The product G can be exposed and displayed in a state of being greatly opened.

  Further, since the connecting portion of the turning portion 10c is enlarged to some extent and is easily broken even if the pitch is shortened, the connecting portion of the turning portion 10c is set large and the pitch is set short, and the shock resistance in the distribution process. It is possible to improve the ease of opening by setting the connecting portion of the other part of the score line 10 to be small and the pitch to be long while securing the property.

  And, as in this embodiment, if the connecting portion of the horizontal cut portion 10a, the vertical cut portion 10b, and the upper cut portion 10d is set small and the pitch is set long, when the display state is set, the remaining tray-like portion In addition, since the trace of breakage of the connecting portions of the cut line 10 is inconspicuous, an exhibit excellent in cosmetics can be performed.

  In the above embodiment, the top surface has a tack end type, but the sealing structure on the top surface may be a seal end type in which a flap extending from the upper end of each surface of the peripheral wall is bonded and sealed. In this case, when the display state is set, an upper cut portion 10d of the score line 10 may be inserted so that the top flap can be cut.

  Moreover, although the thing which provided the opening assistance part 12 in both sides | surfaces was illustrated, when the surface opened in a display state is 1 surface or 2 surfaces, the opening assistance part 12 may be only one place, and opening You may provide in the same surface as the start part 11. FIG. Moreover, you may provide two or more opening assistance parts 12 in the same surface. Furthermore, the opening assistance part 12 may be provided not only on the side surface but also on the top surface.

  Moreover, the direction change part 10c of the score line 10 illustrated that the angle of the inside (subordinate angle) of the angle | corner which the extended line of the horizontal cut part 10a and the vertical cut part 10b which are the tangent of the both ends becomes an obtuse angle However, this angle may be an acute angle or a right angle. Further, when the inner angle is an acute angle or a right angle, the turning portion 10c is preferably curved rather than bent.

  In addition, the guide ruled line 12a of the opening assisting portion 12 is exemplified by an intermediate portion that is slanted and bent at both ends. However, the guide ruled line 12a extends across the opposite ends of the turning portion 10c in the direction opposite to the turning portion 10c. Alternatively, a plurality of the curved portions may be provided radially from the position away from the turning portion 10c toward the turning portion 10c.

DESCRIPTION OF SYMBOLS 1 Front plate 2 Side plate 3 Rear plate 4 Passage piece 5, 6 Bottom plate 7 Lid receiving piece 8 Lid plate 9 Insert piece 10 Cut line 10a Horizontal cut part 10b Vertical cut part 10c Turning part 10d Upper cut part 11 Start of opening Part 11a Cut line 11b Guide ruled line 12 Opening assisting part 12a Guide ruled line G

Claims (2)

Insert a cut line (10) where the cut and the connecting portion are intermittently connected to the wall surface, and apply a force to the wall surface from the opening start portion (11) facing the cut line (10). In the packaging box that is opened by cutting the wall surface along (10), the turning portion (10c) whose direction changes to a position away from the portion where the opening start portion (11) of the score line (10) faces. The portion facing the inside of the turning portion (10c) is the opening assisting portion (12) where the connecting portion breaks when pushed, and the dimensions of the connecting portion of the turning portion (10c) at the cut line (10) An easy-open packaging box characterized in that the size of the connecting portion of other parts is set small .   The easy-open packaging box according to claim 1, wherein a guide ruled line (12a) for facilitating the pushing-in is provided in the opening assisting part (12).

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