JP2018131216A - Opening structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening structure which suppresses an opening failure based on surface peeling of an opening part.SOLUTION: An opening structure 5 is for tearing off an opening part 22 adhering to an adhesive surface 17. The opening part 22 includes: a tearing line 32 formed along an opening direction so as to be cut; and a peeling interruption line 33 cut in along a direction orthogonal to the opening direction on a mating surface with the adhesive surface 17.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an opening structure such as a packaging box.

  2. Description of the Related Art A packaging box that is sealed by adhering overlapped opening portions is known.

  For example, the corrugated cardboard box described in Patent Document 1 is sealed by bonding an upper flap and a lower flap connected to a side wall at an adhesive portion. The lower flap is provided with an information display part on the folding line side with respect to the adhesive part. A cut line for preventing surface layer peeling is formed between the adhesive portion of the lower flap and the information display portion. The cut line for preventing the surface layer peeling prevents the surface layer of the lower flap from peeling to the information display portion when the upper flap is peeled off from the lower flap.

Registered Utility Model No. 3024758

  However, the cut line for preventing the surface layer peeling of the corrugated cardboard box described above does not consider that the surface layer of the upper flap is peeled off. In the above-mentioned cardboard box, the surface layer of the upper flap starts to peel off from the bonded portion, and the surface layer peeled off from the upper flap may be connected to the bonded portion on the lower flap side.

  The above-described problem has occurred even when the unsealed portion adhered to the adhesive surface is peeled off along the zipper to open the packaging box. As the unsealed portion was peeled off, the surface layer of the unsealed portion sometimes began to peel off from the adhesive-attached portion (occurrence of surface layer peeling). When the peeled surface layer (release paper) is stuck to the adhesive and the peeling of the opening portion is advanced, the adhesive surface (adhesive) may be covered with the release paper. Then, since the lid is connected to the body box, there is a problem that it is difficult to open the packaging box. Moreover, the surface layer of the unsealed part may be left without being cut by the zipper. In this case, since the surface peeling of the unsealed part is removed (derailed) from the zipper, the range of the surface peeling of the unsealed part may be expanded.

  In order to solve the above-mentioned problems, the present invention provides an unsealing structure that suppresses unsuccessful unsealing based on surface peeling of the unsealed portion.

  In order to achieve the above-described object, the present invention provides an unsealing structure for tearing off an unsealed portion adhered to an adhesive surface, the unsealed portion being formed so as to be cut along the unsealing direction; And a peeling interruption line cut along a direction intersecting the opening direction on the mating surface with the adhesive surface.

  In this case, it is preferable that the peeling interruption line is formed so that at least a part of the tear line side is inclined toward the tear line side from the upstream side toward the downstream side in the opening direction.

  In this case, a plurality of the peeling interruption lines are provided side by side in the opening direction, and the opening portion is bonded to the bonding surface via an adhesive adhered between the adjacent peeling interruption lines. It is preferable.

  In this case, the unsealing portion is formed of corrugated cardboard in which a front liner and a back liner are bonded to each other, and the tear line is a zipper formed by arranging a plurality of cuts at intervals in the opening direction. The peeling interruption line is preferably a half-cut line obtained by cutting the back liner serving as the mating surface.

  In this case, it is preferable that the opening portion is provided on a lid that closes an opening formed on one surface of the body box.

  In other cases, it is preferable that the opening portion is provided in a body box having an opening on one side.

  According to the present invention, it is possible to suppress unsuccessful unsealing based on surface peeling of the unsealed portion.

It is a perspective view which shows the packaging box which concerns on one Embodiment of this invention. It is a disassembled perspective view which shows the packaging box which concerns on one Embodiment of this invention. It is a top view which shows the body box of the packaging box which concerns on one Embodiment of this invention, and the blank of a cover body. It is a bottom view which shows the blank of the cover body of the packaging box which concerns on one Embodiment of this invention. It is a bottom view which shows a part of opening part of the opening structure which concerns on one Embodiment of this invention. It is a perspective view which shows the opening process of the packaging box which concerns on one Embodiment of this invention. It is the opening structure which concerns on one Embodiment of this invention, Comprising: It is a bottom view which shows a part of removal part after opening. It is a perspective view which shows the state which opened the packaging box which concerns on one Embodiment of this invention. It is a bottom view which shows a part of opening part of the opening structure which concerns on the 1st modification of one Embodiment of this invention. It is a bottom view which shows a part of opening part of the opening structure which concerns on the 2nd modification of one Embodiment of this invention. It is a bottom view which shows a part of opening part of the opening structure which concerns on the 2nd modification (other example) of one Embodiment of this invention. It is a bottom view which shows the body box of the packaging box which concerns on the 3rd modification of one Embodiment of this invention, and the blank of a cover body. It is a perspective view which shows the packaging box which concerns on the 3rd modification of one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In this specification, terms indicating directions and positions are used, but these terms do not limit the technical scope of the present invention.

<Outline of packaging box>
With reference to FIG. 1 thru | or FIG. 4, the packaging box 1 which concerns on this embodiment is demonstrated. FIG. 1 is a perspective view showing the packaging box 1. FIG. 2 is an exploded perspective view showing the packaging box 1. FIG. 3 is a plan view showing the body box 2 of the packaging box 1 and the blanks 2 </ b> A and 3 </ b> A of the lid 3. FIG. 4 is a bottom view showing the blank 3 </ b> A of the lid 3 of the packaging box 1.

  As shown in FIGS. 1 and 2, the packaging box 1 includes a body box 2 and a lid 3. The packaging box 1 is a so-called telescope type cardboard box in which a body box 2 and a lid 3 are separated. The body box 2 includes a pair of side plates 11 and a pair of end face plates 12 (a plurality of peripheral plates) provided in a standing posture on the four sides (peripheries) of the bottom plate 10 via ruled lines 15. That is, the body box 2 is formed in a bottomed rectangular tube shape with the upper surface opened. The lid 3 is formed so as to be able to close the upper surface opening 16 formed on the upper surface of the body box 2. The packaging box 1 is sealed by closing the top opening 16 of the body box 2 with the lid 3 (see FIG. 1).

  The body box 2 and the lid 3 are formed by assembling blanks 2A and 3A shown in FIG. Each of the blanks 2A and 3A is formed by punching a piece of paper cardboard with a paper punching device. For example, the corrugated cardboard is obtained by bonding a front liner 4B and a back liner 4C to a corrugated central shin 4A. 3 shows the front liner 4B side (the outer surface side of the packaging box 1), and FIG. 4 shows the back liner 4C side (the inner surface side of the packaging box 1). In the present specification, a direction parallel to the corrugated center 4A of the cardboard is referred to as a “step direction”, and a direction orthogonal to the step direction is referred to as a “flow direction”. In the drawing, “X” indicates “stage direction”, and “Y” indicates “flow direction”.

<Structure of body box>
As shown in FIG. 3, the blank 2 </ b> A of the body box 2 includes a bottom plate 10, a pair of side plates 11, a pair of end plate 12, four inward folding plates 13, and a pair of flaps 14. It is out. The blank 2A is formed in a substantially rectangular plate shape that is longer in the step direction than the flow direction as a whole.

  The bottom plate 10 is formed in a substantially rectangular shape that is long in the step direction. The pair of side plates 11 are provided in a state of being connected via ruled lines 15 at both ends in the flow direction of the bottom plate 10. The side plate 11 is formed in a substantially rectangular shape having substantially the same dimensions as the bottom plate 10 in the step direction. The dimension of the side plate 11 in the flow direction is shorter than the dimension of the bottom plate 10 in the flow direction. The pair of end face plates 12 are provided in a state of being connected to both ends in the step direction of the bottom face plate 10 via ruled lines 15. The end face plate 12 is formed in a substantially rectangular shape having substantially the same dimension as the bottom face plate 10 in the flow direction. The dimension in the step direction of the end face plate 12 is substantially the same as the dimension in the flow direction of the side face plate 11.

  The four inwardly folded face plates 13 are provided in a state of being connected via ruled lines 15 at both ends in the flow direction of the end face plates 12. The inner folding face plate 13 is formed in a substantially rectangular shape having substantially the same dimensions as the end face plate 12 in the step direction. The dimension in the flow direction of the inner folding face plate 13 is substantially the same as the dimension in the flow direction of the side face plate 11. The pair of flaps 14 are provided in a state of being connected to the stepwise outer ends (tips) of the pair of end face plates 12 via ruled lines 15. The flap 14 is formed in a substantially rectangular shape having substantially the same dimensions as the end face plate 12 in the flow direction. The length of the flap 14 in the step direction is sufficiently shorter than the length of the end plate 12 in the step direction. The ruled line 15 is formed by squashing the corrugated cardboard in the thickness direction from the back liner 4C side.

<Configuration of lid>
As shown in FIGS. 3 and 4, the blank 3 </ b> A of the lid 3 includes a lid surface plate 20, a joint portion 21, and an opening portion 22. The blank 3A is generally formed in a plate shape of a substantially square shape (precisely, a substantially rectangular shape slightly longer in the flow direction than in the step direction).

  The lid surface plate 20 is formed in a rectangular shape having substantially the same size as the bottom surface plate 10 of the body box 2. The joint portion 21 and the unsealing portion 22 are provided in a state of being connected to both ends in the step direction of the lid face plate 20 via ruled lines 23 (similar to the ruled lines 15). The joining portion 21 and the opening portion 22 are each formed in a substantially rectangular shape having the same dimensions as the lid face plate 20 in the flow direction. The dimension in the step direction of the joint portion 21 and the opening portion 22 is sufficiently shorter than the dimension in the step direction of the lid face plate 20. Moreover, the dimension of the step direction of each piece 21 and 22 is fully shorter than the height of the body box 2 (refer FIG. 1). The dimension of the joining part 21 in the step direction is substantially the same as the dimension of the opening part 22 in the step direction.

<Packaging box assembly process>
Here, with reference to FIG. 1 and FIG. 2, the assembly process of the packaging box 1 is demonstrated. The packaging box 1 may be assembled manually by an operator, or may be assembled automatically or semi-automatically by a box making machine. Here, the case where an operator assembles the packaging box 1 will be described.

  The body box 2 is assembled by bending the face plates 10 to 14 and the like of the blank 2 </ b> A with the back liner 4 </ b> C facing upward along the ruled line 15. First, an operator bends each end face plate 12 with respect to the bottom face plate 10 to bend, and each inner fold face plate 13 is bent inward. Subsequently, the worker bends the side plates 11 so as to stand up with respect to the bottom plate 10 and bends the flaps 14 inward.

  Thus, the body box 2 is assembled (see FIG. 2). In a state where the pair of side surface plates 11 and the pair of end surface plates 12 are in the standing posture with respect to the bottom surface plate 10, the four inner folding surface plates 13 are folded inwardly along the ruled lines 15 with respect to the pair of end surface plates 12. Is provided to face the inner surface of the side plate 11. Further, in this state, the pair of flaps 14 is provided in a state of being folded inward along the ruled line 15 with respect to the pair of end face plates 12 and extending toward the upper surface opening 16. Not only the above assembly procedure, but also each end face plate 12 may be bent after each inner folded face plate 13 or each flap 14 is folded.

  By the way, each side plate 11, each end surface plate 12, and each inner folding surface plate 13 are not fixed (connected) to each other. That is, the side plates 11 and the end plates 12 are provided separately from each other in a standing posture with respect to the bottom plate 10. Therefore, if the operator does not hold down the face plates 11, 12, etc., the body box 2 returns to the flat state (blank 2A) before assembly.

  Next, the operator configures the packaging box 1 sealed by closing the upper surface opening 16 of the body box 2 with the lid 3. It should be noted that the contents such as the products stored in the packaging box 1 may be arranged on the bottom plate 10 before assembling the body box 2, or after the body box 2 is assembled, May be accommodated.

  An operator positions the lid face plate 20 of the lid 3 on the top box 16 and places it on the body box 2. The lid surface plate 20 is bridged between the pair of side surface plates 11 positioned with the upper surface opening 16 interposed therebetween, and closes the upper surface opening 16. In this state, the joint portion 21 and the opening portion 22 extend outward from the pair of side plates 11. The central shin 4A of the lid 3 is provided in a state extending in the direction in which the lid face plate 20 is erected. Further, the shin 4 </ b> A of the body box 2 is provided in a state of extending in the length direction orthogonal to the direction in which the lid face plate 20 is erected.

  Subsequently, the worker attaches the adhesive G in a substantially dotted shape (substantially circular shape) to the adhesive surface 17 set on the upper outer surface of the pair of side plates 11. A plurality of substantially dotted adhesives G adhere to the bonding surface 17 at substantially equal intervals in the step direction. The operator bends the joint portion 21 and the opening portion 22 downward along the ruled line 23. The joint portion 21 and the opening portion 22 are bonded to the pair of side surface plates 11 (adhesion surfaces 17) in a state where the upper surface opening portion 16 is closed by the lid surface plate 20.

  As described above, the body box 2 and the lid 3 are connected, and the packaging box 1 is sealed (see FIG. 1). Since the pair of side plates 11 are connected to the lid body 2, the pair of side plates 11 are maintained in the standing posture without falling down. Since the lid body 2 (the lid surface plate 20) presses the pair of flaps 14 from above, the pair of end surface plates 12 are also maintained in the standing posture without falling down. In addition, although the adhesive G was made to adhere to the front liner 4B (adhesion surface 17) of the side surface board 11, you may adhere to the back liner 4C of the junction part 21 and the opening part 22 not only in this. As the adhesive G, for example, a hot melt adhesive, a synthetic resin emulsion adhesive, a double-sided tape, or the like can be used.

  The packaging box 1 is opened by peeling the opening portion 22 of the lid 3 from the side plate 11 against the adhesive force of the adhesive G. The lid 3 is provided with an unsealing structure 5 for tearing off the unsealing portion 22 bonded to the bonding surface 17 of the side plate 11.

<Configuration of opening structure>
Hereinafter, the unsealing structure 5 will be described with reference to FIGS. 1 and 3 to 5. FIG. 5 is a bottom view showing a part of the opening portion 22 of the opening structure 5. Note that “W” shown in the drawing indicates the opening direction of the opening portion 22 (direction in which the opening portion 22 is peeled off). The opening direction refers to a direction parallel to the flow direction of the lid 3. Further, in the following description, “upstream” and “downstream” and similar terms refer to “upstream” and “downstream” in the opening direction and similar concepts.

  As shown in FIG. 1, the unsealing structure 5 includes an unsealing portion 22 that is bonded to the bonding surface 17 via an adhesive G. As described above, the bonding surface 17 is provided on the outer surface of the pair of side plates 11. An adhesive G is attached to the adhesive surface 17 in a substantially dot shape. In addition, although the opening part 22 was a part which comprises the cover body 3, it is also a part which comprises the opening structure 5. FIG.

  As shown in FIGS. 3 to 5, the unsealing part 22 is divided into a remaining part 30 and a removing part 31 with a tear line 32 in between. The remaining portion 30 is provided in a state of being connected to one end in the step direction of the lid face plate 20 via a ruled line 23. The removal portion 31 is provided in a state of being connected to one end in the step direction of the remaining portion 30 via a tear line 32. The removal portion 31 is formed in a wider band shape in the step direction than the remaining portion 30. The back liner 4 </ b> C of the removing unit 31 constitutes a mating surface that is bonded to the bonding surface 17 via the adhesive G. At the upstream end portion of the removal portion 31, a knob portion 31 </ b> A is formed by cutting a slit along the tear line 32. A plurality of knob lines 31B for preventing slipping are formed on the back liner 4C of the knob part 31A. Each knob line 31B is formed by being slightly crushed linearly in the thickness direction from the back liner 4C side.

  As shown in FIG. 5, the tear line 32 is formed in a state extending substantially parallel to the ruled line 23 of the lid 3. The tear line 32 is a so-called zipper formed by arranging a plurality of cuts 32A at intervals (substantially at equal intervals) in the opening direction. The tear line 32 is formed so as to be cut along a plurality of cuts 32A.

  Each cut 32A is formed by penetrating the blade in the thickness direction of the cardboard. Each cut 32A includes a straight portion 32B and a guide portion 32C. The straight portion 32B is formed by being cut linearly along the opening direction. The guide portion 32C is formed on the upstream side of the straight portion 32B. The guide portion 32C is formed to be inclined upstream from the straight portion 32B toward the removal portion 31 side. In addition, the guide part 32C is inclined about 30 degrees with respect to the straight part 32B.

  By the way, when the removal part 31 is peeled off along the tear line 32, the surface layer of the back liner 4C of the removal part 31 (hereinafter also referred to as “the surface layer of the removal part 31”) starts to peel from the adhesion part of the adhesive G. (Surface layer peeling occurred). When the removal portion 31 is peeled off while the peeled surface layer (hereinafter also referred to as “release paper P”) is adhered to the adhesive G, the adhesive surface 17 (adhesive G) is covered with the release paper P. There was a case. Then, since the lid 3 is connected to the body box 2, the opening operation of the packaging box 1 may be difficult. Moreover, the surface layer of the removal part 31 might be left without being cut | disconnected by the tear line 32. FIG. In this case, since the surface layer peeling of the removal portion 31 proceeds away from the tear line 32 (derails), the range of the surface layer peeling may be expanded. Therefore, the opening structure 5 according to the present embodiment includes a plurality of peeling interruption lines 33 that suppress unsuccessful opening of the packaging box 1 based on surface peeling of the removing unit 31 (opening unit 22).

  As shown in FIGS. 4 and 5, the plurality of peeling interruption lines 33 are arranged side by side (substantially at equal intervals) in the opening direction on the back liner 4 </ b> C of the removing unit 31. Each peeling interruption line 33 is cut in a straight line along the direction intersecting the opening direction in the back liner 4 </ b> C of the removing unit 31. Specifically, each separation interruption line 33 is formed to be inclined toward the tear line 32 from the upstream side in the opening direction toward the downstream side. The inclination angle θ of each peeling interruption line 33 is set to about 45 degrees with respect to a straight line parallel to the ruled line 23 (a straight line extending in the opening direction) (see FIG. 5).

  As shown in FIG. 5, each separation interruption line 33 is formed between the vicinity of the tear line 32 and the vicinity of the tip of the removal portion 31. Each peeling interruption line 33 is formed so as not to be connected (crossed) with the tear line 32. Each peeling interruption line 33 is a half-cut line obtained by cutting the back liner 4C serving as a mating surface. Specifically, each peeling interruption line 33 is formed by cutting only the back liner 4C or cutting from the back liner 4C to the middle (substantially half) in the thickness direction of the cardboard.

  The adhesive G adheres the adhesive surface 17 (the front liner 4B of the side plate 11) and the back liner 4C of the removal portion 31. The plurality of adhesives G are attached to the adhesive surface 17 in a substantially dot shape (substantially circular shape) so as to adhere to the approximate center of the interval between the adjacent separation interruption lines 33.

<Operation of opening structure>
Next, with reference to FIG. 6 thru | or FIG. 8, the effect | action of the opening structure 5 at the time of opening of the packaging box 1 is demonstrated. FIG. 6 is a perspective view showing an opening process of the packaging box 1. FIG. 7 is a bottom view showing a part of the removal portion 31 after opening. FIG. 8 is a perspective view showing a state in which the packaging box 1 is opened. In the following description, the packaging box 1 is assumed to be sealed. In addition, in order to simplify the description, the description will be made by paying attention to one adhesive G adhering portion in the removing portion 31 and one peeling interruption line 33 adjacent to the downstream side of the adhering portion.

  First, the user holds the knob 31A and pulls the removing unit 31 (opening unit 22) in the opening direction. As shown in FIGS. 6 and 7, the removal portion 31 is peeled off from the adhesive surface 17 (or the adhesive G) while being cut from the remaining portion 30 along the tear line 32.

  When the surface layer of the removal part 31 begins to peel from the adhesion part of the adhesive G, the surface layer peeling range extends in the opening direction as the removal part 31 progresses (see the black arrow in FIG. 7). When the surface layer peeling proceeds to the peeling interruption line 33, the release paper P is cut at the peeling interruption line 33. That is, the progress of surface peeling is interrupted.

  In addition, when the surface layer of the removal portion 31 is left uncut by the tear line 32, the surface layer peeling of the removal portion 31 proceeds by derailing from the tear line 32, and the range of the surface layer peeling is the tip in the step direction of the removal portion 31. (See the white arrow in FIG. 7). When the surface layer peeling proceeds to the peeling interruption line 33, the release paper P is cut at the peeling interruption line 33. That is, the expansion of the surface peeling range is interrupted. At this time, the release paper P is cut toward the tear line 32 along the inclination of the release interruption line 33. For this reason, the traveling direction of the delaminated surface layer separation is also induced toward the tear line 32 (see the broken line arrow in FIG. 7).

  When the user peels the removal portion 31 to the downstream end and removes it from the adhesive surface 17, the connection between the body box 2 and the lid 3 is released. That is, the packaging box 1 is opened.

  Here, as already described, the face plates 11 to 13 are not connected to each other. When the connection between the body box 2 and the lid 3 is released, the lid 2 cannot press the side plate 11 and the end plate 12. For this reason, each face plate 11 and 12 shown with the dashed-two dotted line in FIG. 8 cannot maintain a standing posture. Therefore, the side surface plate 11 and the end surface plate 12 fall outside with the ruled line 15 (boundary with the bottom surface plate 10) as a fulcrum, due to the restoring force (elastic force) of the bent portion with the bottom surface plate 10 and the weight of the side surface plate 11 and the end surface plate 12 ( (See the two-dot chain arrow in FIG. 8). At this time, each inner folding face plate 13 is rotated outward by the restoring force of the bent portion with the end face plate 12 to push the side face plate 11 outward. Further, the lid 3 bonded to the side plate 11 via the joining portion 21 also falls with the side plate 11. As described above, the body box 2 is expanded (disassembled) in conjunction with the opening of the packaging box 1, and almost returns to the state of the blank 2A before assembly. Then, the user takes out the contents from the expanded body box 2. The unfolded blank 2A of the body box 2 is in a state with some creases.

  In the opening structure 5 according to the present embodiment described above, the release interruption line 33 is configured to cut the release paper P peeled off from the back liner 4C of the removing unit 31 (opening unit 22) (see FIG. 7). According to this configuration, since the progress of the surface layer peeling of the removing unit 31 is interrupted by the peeling interruption line 33, it is possible to suppress the adhesive surface 17 from being covered with the release paper P. Moreover, when the surface layer peeling of the removal part 31 derails from the tear line 32 and progresses, the expansion of the range of surface layer peeling can be prevented. Thereby, the opening failure of the packaging box 1 based on surface peeling of the opening part 22 can be suppressed.

  Further, according to the unsealing structure 5 according to the present embodiment, since the peeling interruption line 33 is inclined in the opening direction, the progress direction of the delaminated surface layer peeling can be guided toward the tear line 32 (see FIG. 7). ). Thereby, since the advancing direction of surface peeling can be returned to the tear line 32 side, the generation | occurrence | production range of surface peeling can be stopped in a narrow range.

  Moreover, in the opening structure 5 which concerns on this embodiment, the opening part 22 is adhere | attached on the adhesion surface 17 through the adhesive agent G adhering between the adjacent peeling interruption | interruption lines 33 (refer FIG. 6 and FIG. 7). According to this configuration, even when surface peeling starting from the adhesive G adhesion portion occurs continuously as the removal portion 31 is peeled off, the surface peeling is caused by the plurality of peeling interruption lines 33 arranged in the opening direction. Can be interrupted. Thereby, expansion of the generation | occurrence | production range of surface layer peeling can be suppressed effectively. In addition, it is preferable that the adhesive G adheres to the vicinity of the peeling interruption line 33 located on the downstream side in the opening direction between the adjacent peeling interruption lines 33. Thereby, progress of surface layer peeling can be suppressed to the minimum.

  Moreover, in the packaging box 1 which concerns on this embodiment, each side plate 11 and each end surface plate 12 are isolate | separated from each other in the state made into the standing posture with respect to the bottom plate 10, and the removal part 31 (opening part 22) is provided. When peeled off from the adhesive surface 17, it is provided so as to be tilted outward with the ruled line 15 as a fulcrum (see FIG. 8). That is, when the connection between the body box 2 and the lid 3 is released, the four face plates 11, 12 and the like fall down in the radial direction. According to this configuration, the body box 2 can be automatically (naturally) expanded (disassembled) simply by releasing the connection between the body box 2 and the lid 3. Thereby, the user can take out the contents accommodated in the body box 2 easily and quickly. Moreover, since the packaging box 1 (the body box 2) after being opened is in a disassembled state, the trouble of disassembling the used packaging box 1 for disposal can be saved. That is, the disposal work of the packaging box 1 can be facilitated.

  Moreover, in the packaging box 1 which concerns on this embodiment, in the state which assembled the body box 2, each inner folding surface board 13 is arrange | positioned inside the side board 11, and the junction part 21 and the opening part 22 are on the outer surface of the side board 11. FIG. It was set as the structure adhere | attached. According to this configuration, it is possible to prevent the adhesive G from adhering to a position (for example, a joint between the inner folded face plate 13 and the side face plate 11) that inhibits the tilt of the side face plate 11. When the connection between the body box 2 and the lid 3 is released, each inner folded face plate 13 rotates outward with the ruled line 15 as a fulcrum to push the side face plate 11 outward. Thereby, it can be guaranteed that the face plates 11 and 12 automatically fall in conjunction with opening of the packaging box 1.

  In the packaging box 1, the pair of flaps 14 is configured to block the gap between the flow direction both ends of the lid 3 and the upper surface opening 16. According to this structure, it is not necessary to adhere | attach the flow direction both ends of the cover body 3 to the body box 2, and the increase in the number of the adhesion surfaces 17 can be suppressed. Thereby, connection cancellation | release of the body box 2 and the cover body 3 can be performed easily and rapidly.

  In addition, in the unsealing structure 5 which concerns on this embodiment, although the peeling interruption | interruption line 33 was formed in linear form, this invention is not limited to this. For example, as shown in FIG. 9A, the peeling interruption line 34 may be formed in a bent shape (first modification). In addition, as shown in FIG. 9B and FIG. 9C, the peeling interruption line 35 may be formed to be curved so as to be inclined toward the opening direction (second modification). As described above, the separation interruption lines 33 to 35 may be formed so that at least part of the tear line 32 side is inclined toward the tear line 32 side from the upstream side in the opening direction toward the downstream side. Furthermore, although the inclination angle θ of the peeling interruption line 33 is set to about 45 degrees, the present invention is not limited to this. The inclination angle of the peeling interruption lines 33 to 35 (in the case of the peeling interruption line 35, the inclination angle of the tangent) can be freely set within a range of angles that can intersect the ruled line 23 (opening direction). For example, the peeling interruption line may be formed at right angles to the ruled line 23 (not shown).

  Moreover, in the packaging box 1 which concerns on this embodiment, although the adhesive surface 17 was provided in the side plate 11, and the opening part 22 was provided in the cover body 3, this invention is not limited to this. For example, the adhesive surface 17 may be provided on the end face plate 12 (not shown). That is, the lid 3 may be bridged between the pair of end face plates 12 to close the upper surface opening 16. In addition, as shown in FIGS. 10 and 11, the adhesive surface 17 is provided on the lid 3 (lid surface plate 20), and the opening portion 22 (unsealing structure 5) is provided on the side surface plate 11 (or the end surface plate 12). (3rd modification). In this case, the removal part 31 can be adhere | attached on the one end part of the cover surface board 20 (refer FIG. 11). As described above, the adhesive surface 17 is provided on either the side plate 11 (or the end plate 12) or the lid 3, and the opening portion 22 is either the side plate 11 (or the end plate 12) or the lid 3. It only has to be provided on the other side.

  Moreover, in the packaging box 1 which concerns on this embodiment (A 1st thru | or 3rd modification is included. The following is also the same.), Although the junction part 21 and the opening part 22 were provided in the two sides which the cover surface board 20 opposes. However, the present invention is not limited to this. For example, instead of the joint portion 21, a pair of opening portions 22 may be provided in a state of being connected to two opposing sides of the lid face plate 20. Further, for example, the joint portion 21 may be provided on one side of the lid surface plate 20, and the three unsealed portions 22 may be provided on the other three sides of the lid surface plate 20. That is, it is only necessary that the unsealed portion 22 is continuous with any one side of the lid surface plate 20 (one side (upper side) of the side surface plate 11 or the end surface plate 12).

  In addition, in the opening structure 5 which concerns on this embodiment, although the tear line 32 was formed so that the opening part 22 might be divided into two, this invention is not limited to this. For example, the tear line 32 may be formed on the ruled line 23 (not shown). In addition, the tear line 32 is configured by a so-called zipper, but is not limited thereto, and may be configured by, for example, a sewing line in which a plurality of straight cuts are arranged in the opening direction (not shown). In addition, a cut tape in which the tear line is attached along the opening direction in the back liner 4C of the opening portion 22 may be used (not shown).

  In the unsealing structure 5 according to the present embodiment, the plurality of peeling interruption lines 33 to 35 are arranged at substantially equal intervals in the opening direction. However, the present invention is not limited to this, and is arranged at different (non-uniform) intervals. Also good. Moreover, the number of formation of the separation interruption lines 33 to 35 is arbitrary, and at least one of the separation interruption lines 33 to 35 may be formed on the opening portion 22. Further, the peeling interruption lines 33 to 35 are so-called half-cut lines, but are not limited thereto, and may be full cut lines formed by penetrating the blade in the thickness direction of the cardboard.

  Moreover, in the opening structure 5 which concerns on this embodiment, when the removal part 31 was completely removed from the residual part 30, the packaging box 1 was opened, but this invention is not limited to this. For example, the position where the adhesive G is applied may be adjusted so that the packaging box 1 is opened in a state where the downstream end portion of the removal portion 31 is connected to the remaining portion 30.

  Moreover, although the opening structure 5 which concerns on this embodiment was applied to the packaging box 1 of the two-piece structure divided into the body box 2 and the cover body 3, this invention is not limited to this. The unsealing structure 5 may be applied to a packaging box having a one-piece structure in which a body box and a lid are integrated, such as a B type or an N type (both not shown). In the case of a B-type or N-type packaging box, it is preferable that either one of the adhesive surface 17 and the opening portion 22 is formed on the side surface, and either one of the adhesive surface 17 and the opening portion 22 is formed on the lid portion. . In addition, the opening structure 5 may be applied to a wraparound case or the like (not shown). In the case of a wrap-around case, it is preferable that the adhesive surface 17 and the opening portion 22 are formed at an end portion that is wrapped around and overlapped with a product or the like.

  Moreover, in the packaging box 1 which concerns on this embodiment, since the baseplate 10 was substantially rectangular, the body box 2 was formed in the substantially rectangular tube shape, but this invention is not limited to this. For example, the bottom plate may be formed in a polygonal shape other than a quadrangle. In this case, the body box is formed in a cylindrical shape having a polygonal cross section by providing a peripheral surface plate on each side of the bottom surface plate. Moreover, it is preferable that a cover body is formed in the shape matched with the polygonal cross section of the body box. Further, as the body box, a so-called semi-A type body box in which a pair of outer flaps are abutted to constitute a bottom plate may be used.

  Moreover, in the packaging box 1 which concerns on this embodiment, although blank 2A of the body box 2 was formed in the substantially rectangular shape long in the step direction as a whole, not only this but the flow direction rather than the step direction as a whole It may be formed in a long and substantially rectangular plate shape, or may be formed in a substantially square plate shape as a whole. Similarly, the blank 3A of the lid 3 may be formed in a substantially rectangular plate shape that is generally longer in the step direction than the flow direction, or is generally longer in the flow direction than the step direction. It may be formed in a rectangular plate shape.

  Moreover, although the packaging box 1 which concerns on this embodiment was formed with the cardboard made from paper, it may not be restricted to this but may be formed with the cardboard etc. Moreover, although the adhesive agent G was attached to the adhesive surface 17 (or the opening part 22) in substantially dot shape, it is not restricted to this, You may be attached in substantially linear form along the opening direction.

  In addition, description of the said embodiment shows the one aspect | mode of the opening structure which concerns on this invention, Comprising: The technical scope of this invention is not limited to the said embodiment.

2 Body box 3 Lid 4A Middle shin 4B Front liner 4C Back liner 5 Unsealing structure 10 Bottom plate 11 Side plate (circumferential plate)
12 End plate (circumferential plate)
15 Ruled Line 16 Top Opening (Opening)
17 Adhesive surface 22 Unsealed part 32 Tear line 32A Cut line 33-35 Separation break line G Adhesive

Claims (6)

An unsealing structure (5) for tearing off the unsealing part (22) adhered to the adhesive surface (17),
The opening part is
A tear line (32) formed to be cut along the opening direction;
The opening structure characterized by including the peeling interruption line (33-35) cut along the direction which cross | intersects an opening direction in the mating surface with the said adhesive surface.   2. The opening structure according to claim 1, wherein at least a part of the tear line side is inclined toward the tear line side from the upstream side toward the downstream side in the opening direction. . A plurality of the peeling interruption lines are provided side by side at intervals in the opening direction,
The unsealing structure according to claim 1 or 2, wherein the unsealing part is adhered to the adhesion surface via an adhesive (G) adhered between the adjacent peeling interruption lines. The unsealed portion is composed of corrugated cardboard in which a front liner (4B) and a back liner (4C) are bonded to a medium shin (4A),
The tear line is a zipper formed by arranging a plurality of cuts (32A) at intervals in the opening direction,
The opening structure according to any one of claims 1 to 3, wherein the peeling interruption line is a half-cut line obtained by cutting the back liner serving as the mating surface.   The said opening part is provided in the cover body (3) which obstruct | occludes the opening part (16) formed in the one surface of the body box (2), The Claim 1 thru | or 4 characterized by the above-mentioned. Opening structure.   The opening structure according to any one of claims 1 to 4, wherein the opening portion is provided in a body box (2) having an opening (16) on one surface.

Images