JP6056332B2 - Paper carton - Google Patents

Description

  The present invention belongs to the technical field of cartons made of paperboard, and in particular, is a rectangular parallelepiped paperboard container, suitable for storing and selling confectionery, cosmetics, pharmaceuticals, various accessories, etc. It relates to the paper carton used.

  Conventionally, as this type of paper carton, a top-open type paper carton is known in which the top panel is greatly opened to take out the contents. As a typical example, a flap panel that extends forward from the top panel with a hinge on the rear side is attached to the front panel, the contents are stored, and then the side flaps are folded between the side panels. A paper carton that is formed by sticking, and when opening, pulls the knob part consisting of a part of the flap panel, breaks the flap panel and top panel at a pair of left and right zippers, and picks the opening and closing part The opening and closing part that has been opened once is inserted into the notch of the front panel and closed when reclosing, so that the contents can be taken out by forming a large opening in the center of the top panel. Those configured to prevent the opening and closing part from opening are widely used (see cited documents 1 to 3).

  The paper cartons described in the cited documents 1 to 3 form two zipper for opening across the top panel and the flap panel, and each of these two zipper consists of a plurality of continuous cuts. . Then, when the two zipper breaks in the flap panel by picking the knob on the flap panel, the rupture tends to break toward the inside of the notch, so each notch is viewed in the breaking direction and the front side of the notch is inward By making it into the shape of a bent crook, the break is connected to the next cut so that it is not interrupted.

JP-A-8-11869 JP-A-9-193926 JP 11-310226 A

  The paper carton using the above-mentioned zippered zipper breaks the zipper and picks up the unsealed part, forming a large opening in the top panel, resulting in a triangular protrusion on the remaining side Since it becomes a saw blade shape, when the hand is pushed in quickly, the inserted hand may be caught. In addition, although it is easy to manufacture a cutting edge for forming a cut, the zipper line is basically only a straight line, and there are design restrictions when used for a paper carton.

  On the other hand, as a means for opening paper cartons, in addition to the zipper that uses the above-mentioned cut-in shape, a zipper that uses a cut in which the front side is Y-shaped when viewed in the breaking direction, A zipper using a bent notch has been proposed, but the former zipper can accommodate a curved zipper line, but it is difficult to manufacture a cutting edge that forms a notch, and the previous zipper As in the case of opening the carton incorporating the zipper, a triangular protrusion is formed on the remaining one. In addition, the latter zipper, when the carton incorporating the zipper is opened, the triangular protrusion does not occur on the remaining one, but if the tear direction from the end point of the cut is greatly biased inward, There is a problem that the zipper line with this zipper can only deal with only a straight line, and it may not be able to open completely along the zipper line without being connected to the next cut, is there.

  The present invention has been made in view of such problems, and the object of the present invention is to open the top panel by taking out the contents by forming a large opening in the top panel by breaking two zippers. A type of paper carton that can be reliably opened along the zipper line, and when the hand is inserted to remove the contents from the opening after opening, the inserted hand is not caught, and Another object of the present invention is to provide a paper carton capable of forming a curved opening having a soft appearance in terms of design.

  In order to achieve the above object, in the paper carton according to the present invention, a flap panel extending forward from the top panel is attached to the front panel, and the top panel and the flap panel have a plurality of continuous cuts. A pair of left and right zippers that divide the opening region, and the flap panel is a top open type paper carton in which a knob for starting opening connected to two zippers is formed at the front end of the flap panel, The pair of left and right zippers on the top panel are arranged so that the zipper line has a curved shape that bulges outward, and each notch constituting each zipper has a predetermined length that defines the zipper line. A main body part, a guiding part projecting diagonally outward from the rear end of the main part in the breaking direction, and a straight part outward from the front end of the main part in the breaking direction. Characterized in that comprising a receiving portion of the extension strikes the length of the guiding portion of the cutout adjacent with projecting.

  And in the paper carton of the said structure, it is preferable to provide a jumper in the main part of a cut.

Paper carton of the present invention is when Pulling the knob portion cuts the zipper is opened is continuously broken, a pair of right and left zipper in top panels projecting obliquely outward from the front end of the main portion of the cuts Since the breakage progresses by connecting from the leading end of the guiding part to the receiving part of the next cut, the opening along the zipper line is surely performed, and the triangle formed by the breaking of the zipper toward the opened opening part Since the projections are continuously left and only the triangular recesses are continuously formed around the openings formed in the top panel, the protrusions do not remain. There is no such thing that the hand gets caught when taking out. In addition, since the pair of left and right zippers are arranged so that the zipper line has a curved shape that swells outward, a curved opening having a soft appearance can be formed.

  Further, by providing a jumper on the main portion of the cut, it is possible to prevent the cut from being raised up even if the blanks are rubbed in the blank sack pasting step for assembling the paper carton.

It is a perspective view which shows an example of the paper carton concerning this invention. It is an expanded view of the blank which assembles the paper carton shown in FIG. It is an enlarged view of the top | upper surface panel in the blank shown in FIG. It is explanatory drawing which expanded a part of right side zipper formed in the top | upper surface panel in the blank shown in FIG. It is a perspective view which shows the paper carton shown in FIG. 1 in the state which opened the top | upper surface.

  FIG. 1 shows an example of a paper carton according to the present invention. This paper carton is formed by assembling the blank shown in FIG.

  The blank in FIG. 2 is formed by punching paperboard for paper containers. As shown in the drawing, the front panel 11, the bottom panel 12, the back panel 13, A top panel 14 and a flap panel 15 are sequentially provided. Then, side panels 16 and 17 on the bottom side are connected to the left and right sides of the bottom panel 12 via folding lines e and f, respectively, and the folding flaps 18 are connected to the left and right sides of the back panel 13 via folding lines g and h, respectively. , 19 are connected to each other, side panels 20 and 21 on the top surface side are connected to the left and right sides of the top panel 14 via fold lines i and j, respectively, and fold lines k and l are connected to the left and right sides of the flap panel 15. Folding flaps 22 and 23 are connected to each other.

The flap panel 15 is provided with a knob 15a for starting opening at the center of the tip by a notched cut, and the knob 15a is provided with a folding line m made of a stamped line at the center so that it can be easily bent. Yes. A pair of left and right zippers G ₁ extending from the two roots of the knob portion 15 to the end are formed, and the top panel 14 is continuous with the two zipper G ₁ respectively. A zipper G ₂ that extends in a curved line so that the zipper line bulges outward is formed up to the vicinity of the back panel 13.

The top panel 14, pair of left and right zipper G ₂ are formed, in a state that connects the tip ends of the zipper G _2, hinge portion H composed of shaped cuts into successive as illustrated α There are formed, a region surrounded by a pair of right and left zipper G ₂ and the hinge portion H forms a opening area (opening part). And each cut line α is formed in a letter shape so that the ends thereof are separated from each other in the alignment direction and are alternately provided to the left and right in the alignment direction, and the bending direction of the adjacent cut line α is the same direction. Is formed.

The left and right zippers G _{2 on} the top panel 14 are provided from the flap panel 15 side toward the back panel 13 side to the vicinity of both ends of the hinge portion H, and are connected to the zipper G ₂ to form the cuts α at both ends of the hinge portion H. A U-shaped cut β extending on the extension line is formed, and the cut β forms convex portions at both ends of the hinge portion H when bent.

Zipper G ₂ zipper G ₁ and top panel 14 of the flap panel 15 is comprised of a plurality of notches that any consecutive. Of these, Zipper G ₁ of 2 muscle in the flap panel 15 is formed in a flared, since the time of unsealing inward force is broken hanging for each cut, as shown, the breaking direction The incision having a shape in which the front side is bent inward is continued to prevent breakage.

On the other hand, the zipper G ₂ a pair of left and right in the top panel 14, as shown by an enlarged top panel 14 in FIG. 3, arranged in a plurality of notches y as the zipper line is curved to swell outward a row It has been done. Then, as shown in an enlarged view of a part of the right zipper G ₂ in FIG. 4, these cuts y include a main portion y ₁ having a predetermined length that defines the zipper line L and a breaking direction in the main portion y ₁ . A guide portion y ₂ projecting obliquely outward from the rear end (in the direction of the arrow), and a length projecting perpendicularly from the front end in the breaking direction (arrow direction) of the main portion y ₁ to the outside and the extension line of the guide portion of the adjacent notch strikes It has become a by the receiving portion y ₃ Prefecture, to abut the portion y ₃ extension of inducing moiety y ₂ receives the length of the portion y ₃ receives the angle of inducing moiety y ₂ are determined. In addition, in the step of sack-bonding the blank, in order to prevent the blanks from rubbing against each other and the incision y from being raised up, a jumper u is left substantially at the center of the main portion y ₁ .

  The front panel 11 is formed with an insertion portion 11a at a position corresponding to the knob portion 15a of the flap panel 15. After opening the assembled paper carton, the insertion portion 11a is provided with a knob portion 15a at the tip of the opening portion. It can be inserted and locked. Here, the insertion part 11a shaped like a butterfly wing is partitioned by a cutout that leaves a jumper, and when the insertion part 11a is pushed, one side with the jumper is bent as a hinge, thereby It is easy to insert. In addition, a recess forming region 11b having a spindle shape in the middle of the fold line a is provided in the boundary between the front panel 11 and the bottom panel 12 in order to form a recess that can be easily hooked with the knob 15a when opened. Yes.

The blank in FIG. 2 is in a sack pasting state in which the back side of the flap panel 15 is pasted to the front side of the front panel 11. At this time, the portion excluding the opening portion, i.e. glued than zipper G ₁ in the outer area. Then, a plurality of the pasted sack are collectively sent to the box making process.

  To assemble a paper carton from a sack-attached blank, first fold up the folded blank into a rectangular tube shape, then fold the folded flaps 19 and 23 inward on one end face side, and then the side face on the bottom side The panel 17 and the side panel 21 on the top surface side are sequentially bent and bonded together. In this way, the contents are put in from the other open side with only one end face closed. Then, after folding the folding flaps 18 and 22 inward on the other end face side, the side panel 16 on the bottom side and the side panel 20 on the top side are sequentially folded and bonded together. As a result, the paper carton shown in FIG. 1 is boxed.

When taking out the contents from the paper carton shown in FIG. 1, the top surface is opened as shown in FIG. In order to open the top surface of the paper carton in this way, the depression formed in the recess forming region 11b at the lower end of the front panel 11 is used, and the grip portion 15a of the flap panel 15 is grasped with a finger and pulled. Thus the zipper G ₁ of 2 muscle flap panel 15 breaks by pulling the knob portion 15a, continuously directly zipper G ₂ of the right and left top panel 12 by pulling from the top to the rear zipper G ₁ each The broken opening region is opened as a lid while rotating around the rear cut α as a hinge portion H.

In the opened state shown in FIG. 5, triangular projections generated by the breaking of the zipper G ₂ remain around the opened opening portion, and no projections remain around the opening formed in the top panel 14. That is, the zipper G ₂ breaks from the leading end of the guiding portion y ₂ protruding obliquely outward from the rear end of the main portion y ₁ of the cut y to the receiving portion y ₃ at the front end of the next cut y. Therefore, the opening along the zipper line is surely performed, and the periphery of the opening formed after the opening area is opened has a continuous triangular recess. Therefore, when the hand is put into the opening and the contents are taken out, the hand is not caught.

  As mentioned above, although the form for implementing this invention has been demonstrated in detail, the paper carton by this invention is not limited to said embodiment at all, In the range which does not deviate from the meaning of this invention, various change It is natural that this is possible.

DESCRIPTION OF SYMBOLS 11 Front panel 11a Insertion part 11b Recess formation area 12 Bottom panel 13 Rear panel 14 Top panel 15 Flap panel 15a Knob part 16, 17 Side panel 18, 19 Folding flap 20, 21 Side panel 22, 23 Folding flap G1, G2 Zipper L zipper line H hinge part α cut β cut a to m fold line y cut y1 main part y2 induction part y3 receiving part u jumpsuit

Claims (2)

  A flap panel that extends forward from the top panel is attached to the front panel, and the top panel and the flap panel are provided with a pair of left and right zippers that consist of a plurality of continuous cuts to define an opening area. The panel is a top-open type paper carton in which a picking portion for opening opening connected to two zippers is formed at the front end portion of the panel, and the pair of left and right zippers on the top panel swell the zipper line outward The cuts are arranged so as to be curved, and each cut forming each zipper has a main part of a predetermined length that defines the zipper line and a diagonally outer side from the rear end of the main part in the breaking direction. The protruding guide part and the extension line of the guide part of the adjacent notch that protrudes at a right angle from the front end in the breaking direction in the main part Paper carton, comprising the length of the receiving part corresponding can.   The paper carton according to claim 1, wherein a jumper is provided in a main portion of the cut.

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