JP4612299B2 - Carton zipper - Google Patents

Description

  The present invention relates to a zipper used for opening a carton or the like, and more particularly to a carton zipper that can be opened from both ends in an opening operation.

Conventionally, when opening various types of cartons, as a cut line for tearing the necessary part of the carton, a shape in which a discontinuous cut line is simply perforated or an L-shaped cut line in which a straight end is bent is not used. There are a shape provided continuously, a shape provided discontinuously so as to overlap wavy cut lines. Further, a structure in which these cut lines are arranged in two rows and opened in a band shape is usually called a zipper, and a shape as shown in FIG. 8 is implemented or proposed. However, these carton zippers have a shape that can be opened from one direction, and are difficult to open from the opposite direction. Therefore, when the display is unclear, the user may open it from the opposite side for visually impaired persons, elderly people, children, and the like, which may make opening difficult. Therefore, in order to eliminate this drawback, a carton zipper that can be opened from both directions has also been proposed (see, for example, Patent Document 1).
JP 10-101064 A

  However, the carton zipper that can be opened from both directions described above, after tearing the zipper from the carton, the remaining teared part becomes jagged, and it is not beautiful in appearance, scratching fingers etc. There is a problem that there is a risk of being damaged when taking out an object.

  The present invention for solving the above problems is for a carton having a shape that can be opened easily from any of both ends, and the remaining torn portion after opening can be opened in a clean state. The purpose is to provide a zipper.

In order to solve the above-described problems, the present invention provides a zipper with cut lines arranged in two rows, wherein the cut lines are provided discontinuously on two rows of zipper lines that are torn along the opening direction. A main cut line having a small gap width between the cut line and an auxiliary cut line discontinuously provided on a line parallel to the zipper line with a predetermined width inside the zipper line. Is composed of a straight line part and an oblique line part extending obliquely toward the auxiliary cut line at an obtuse angle from both ends of the straight line part, and having a shape provided with a jumper on the straight line part , and the auxiliary cut line is adjacent The length of the auxiliary cut line is equal to or greater than the distance between the tips at a position moved in parallel with a predetermined width in the inner direction of the zipper line between the tips of the hatched portions of the main cut line. The main cut A carton zipper, wherein the eyes of a small shape than the length.

  The carton zipper of the present invention can be opened even if it starts from both directions in various types of cartons with zipper, and if the display is unclear, the user can easily open it for visually impaired people, elderly people, children, etc. It can be torn stably according to the zipper line until the end, and after opening, the remaining torn part is beautiful and there is no risk of hurting fingers etc. or taking out the contents smoothly It has the effect that it can be opened.

  According to the present invention, since the display can be started from both ends, when the display is unclear, the user can easily open it for visually handicapped persons, elderly people, children, etc. A carton zipper having a shape that does not damage a finger or the like when the contents are taken out can be obtained with a beautiful teared portion.

  Embodiments of a carton zipper according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view showing a carton zipper according to the present invention, FIG. 2 is a partially enlarged plan view of the carton zipper according to the present invention, and FIG. 3 shows an example of the shape of the auxiliary cut line of the carton zipper according to the present invention. FIG. 4 is a diagram for explaining the effect of the carton zipper of the present invention, and FIG. 5 is a perspective view showing an embodiment of a carton with a zipper using the carton zipper of the present invention. 6 is a perspective view showing another embodiment of a carton with a zipper using the carton zipper of the present invention, and FIG. 7 is still another embodiment of the carton with a zipper using the zipper for carton of the present invention. FIG. 8 is a plan view showing an example of a conventional carton zipper.

  As shown in FIG. 1, the carton zipper A of the present invention has two lines of cut lines P arranged at the opening portion, and a belt-like zipper is formed between them. It is the shape which can start opening from either direction of both ends. That is, both ends of the carton zipper A are used as the knobs T, and the carton can be opened even if the knobs T on either side are picked and the carton zipper A is torn. Further, a notch v such as a V-shape can be provided at the end of the cut line P so that the knobs T at both ends can be easily picked.

  Each cut line P, P is composed of a main cut line Q and an auxiliary cut line R as shown in FIG. The main cut line Q includes two straight lines Q1 discontinuously provided on the two rows of zipper lines X and X, which are torn lines, and auxiliary cut lines at obtuse angles from both ends of the straight line Q1. It consists of hatched portions Q2, Q2 extending obliquely toward R. The angle α between the straight line portion Q1 and the shaded portions Q2, Q2 is preferably in the range of 90 to 150 degrees. If the angle α is less than 90 degrees, the cut line P cannot be torn smoothly, whereas if it exceeds 150 degrees, the strength of the cut line P before opening becomes weak. Further, it is preferable that the corners of the hatched portion Q2 and the straight line portion Q1 have a rounded shape as shown in FIG. Furthermore, as shown in FIG. 2C, the shaded portion Q2 may be arcuate.

  On the other hand, the auxiliary cut lines R are discontinuously provided on the parallel lines Y and Y located at predetermined widths inside the two rows of zipper lines X and X, respectively, and their positions are shown in FIG. As described above, the position S between the tips of the hatched portion Q2 of the adjacent main cut line Q is moved to the outside in parallel with the width c, and the length b of the auxiliary cut line R is the diagonal line of the adjacent main cut line Q. It is assumed that a length equal to or greater than the distance a between the tips of the portion Q2 is satisfied, that is, a relationship of b ≧ a is established. Moreover, it is preferable that the distance c from the front end of the hatched portion Q to the auxiliary cut line R, that is, the width c moved in parallel between the front ends S in the outward direction is in the range of 0.5 to 3.0 mm. If it is less than 0.5 mm, there is a risk that the cut line P will be cut before opening, and if it exceeds 3.0 mm, the cut line P is difficult to tear.

  Further, as shown in FIG. 3A, the shape of the auxiliary cut line R is a basic shape, but as shown in FIG. As shown in FIG. 3C, it may be a circular arc shape recessed toward the main cut line Q side. By adopting such a shape, the propagation of tearing is reliably carried over, and the cut line P can be torn. In any shape, the main cut line Q and the auxiliary cut line R are set so that the extension line of the hatched portion Q2 of the main cut line Q hits the auxiliary cut line R.

  Furthermore, it is preferable to provide a jumper W on the straight line portion Q1 of the cut line P as shown in FIG. The jumper W is preferably provided at substantially the center of the straight portion Q1, and the width thereof can be set as appropriate within a range of 0.1 to 1.0 mm. By providing this jumpsuit W, it is possible to prevent a drop in the strength of the carton due to the provision of the carton zipper A.

  The carton zipper of the present invention is not limited to a belt-like zipper formed by two parallel cut lines, and can be used effectively even in a shape in which the cut lines are formed in one line. This cut line is easy to tear as compared with a perforated cut line, an L-shaped cut line, and the like, and the remaining torn part does not become a jagged state and becomes a smooth and beautiful state.

  Next, the characteristics of the carton zipper A of the present invention will be described in comparison with a typical example of a conventional carton zipper.

  FIG. 4A is a view for explaining a typical example of a conventional carton zipper. When the carton zipper Z in which L-shaped cut lines L composed of a conventional straight line portion L1 and a hatched portion L2 as shown in FIG. 4-a are arranged in two rows is opened from the M direction, adjacent L-shaped When the gap l between the cut lines L is torn, the tearing direction from the rear end, which is the end point of the straight line L1 of the cut line L, is closer to the oblique line L2 side than the extending direction of the straight line L1. However, as shown by the arrow 1 in FIG. 4-a, if the portion is biased to the opposite side of the hatched portion L2, there is no portion of the cut line L that receives the delamination of the paperboard caused by the tearing of the paperboard. The gap l cannot be cut, the cut lines L are not connected to each other, and complete opening as with the zipper line X cannot be performed. In addition, after opening the carton zipper Z, convex jagged portions remain in the remaining torn portions, and the appearance is not beautiful. On the other hand, when the zipper is opened from the opposite N direction, it is torn in the direction of the shaded portion L2 (arrow 2 in FIG. 4A), the zipper band is cut, and opening becomes difficult.

  On the other hand, in the case of the zipper A for carton according to the present invention, as shown in FIG. 4B, the hatched portions Q2, Q2 from the both ends of the straight portion Q1 of the main cut line Q toward the inner auxiliary cut line R side. The tearing direction can be guided to either one of the shaded portions Q2 regardless of whether the carton zipper A is torn from either the M direction or the N direction, and the tear direction guided by the shaded portion Q2 Since the auxiliary cut line R that catches it is waiting, the tear propagates reliably to the next main cut line Q, and the zipper lines X and X reach the last main cut line Q without cutting the zipper strip. Can be opened along. Moreover, after opening the zipper A for cartons, the remaining tearing part will be in a beautiful state.

  Furthermore, by providing the jumper W in the approximate center of the straight line portion Q1 of the main cut line Q, it is possible to prevent the cut line P from being raised in the sack pasting process, and because the carton zipper A is provided. The carton strength can be prevented from being lowered, and further, when the carton zipper A is torn, a force is applied in stages, and the carton zipper A can be smoothly torn as a whole.

  Next, the carton zipper of the present invention will be described in detail with reference to examples. FIG. 5 is a perspective view showing an embodiment of a carton zipper according to the present invention, and this carton zipper A1 is an example formed on the top panel 15 of the carton C1 with a zipper. As shown in FIG. 5, the carton C1 with a zipper is composed of a top panel 15, four side panels 11, 12, 13, 14, and a bottom panel 16, and the carton zipper A1 is arranged in two rows of cut lines P. Then, it was formed in a belt shape and provided across the top panel 15 of the carton C1 with a zipper. And the picking part T was provided in the both ends of zipper A1 for cartons, and it was set as the shape protruded from the edge of the top panel 15 so that it might be easy to pick. In order to open the carton C1 with zipper, the top part of the carton C1 with zipper could be easily opened by picking the knob T on either side and opening the zipper A1 for carton. And after opening, the torn part left was beautiful.

  FIG. 6 is a perspective view showing another embodiment of the carton zipper according to the present invention, and this carton zipper A2 is formed over the top panel 15 and the front panel 12 of the carton C2 with zipper. . As shown in FIG. 6, the carton C2 with a zipper is composed of a top panel 15, a side panel 11, a front panel 12, a side panel 13, a rear panel 14, and a bottom panel 16, and the carton zipper A2 has a cut line P. It was arranged in two rows in the vicinity of the side of the top panel 15 to form a wide band, and further, extended to the front panel 12 and connected to form a knob portion T. In order to open the carton zipper A2, first, the grip portion T of the front panel 12 is picked, the cut lines P and P of the front panel 12 are torn, and continuously for a wide belt-like carton of the top panel 15 The zipper A2 was opened, and the top of the zippered carton C2 could be opened. And after opening, the torn part left was beautiful.

  FIG. 7 is a perspective view showing still another embodiment of the carton zipper according to the present invention. The carton zipper A3 is formed across the front panel 12 and the side panels 11 and 13 of the carton C3 with zipper. It is an example. As shown in FIG. 7, the zippered carton C3 is composed of a top panel 15, a side panel 11, a front panel 12, a side panel 13, a rear panel 14, and a bottom panel 16, and the cut lines P are arranged in two rows. A belt-like carton zipper A3 was provided across the front panel 12 of the zippered carton C3, and further, a line of cut lines P was provided on both side panels 11 and 13 in an oblique direction. To open the carton C3 with zipper, first, the tab T on either side is picked, the carton zipper A3 of the front panel 12 is opened, and the front panel 12 above the carton zipper A3 is opened. By lifting the top panel 15 and tearing the cut lines P and P of the side panels 11 and 13, the upper part of the zippered carton C3 was divided and opened as a lid. And after opening, the torn part of the lower part was beautiful.

  The carton zipper of the present invention can be formed in any part of the structure constituting the carton, for example, the top, the side, or the bottom. Moreover, in a side part, it can provide continuously over the one part side panel (front panel) or all the side panels. In addition to cartons, it can also be used for plastic cases, stationery, envelopes, and the like.

It is a top view which shows the zipper for cartons of this invention. It is a partial enlarged plan view of the zipper for cartons of the present invention. It is a partial enlarged plan view which shows the example of a shape of the auxiliary | assistant cut line of the zipper for cartons of this invention. It is a figure explaining the effect of the zipper for cartons of the present invention. It is a perspective view which shows one Example of the carton with a zipper using the zipper for cartons of this invention. It is a perspective view which shows another Example of the carton with a zipper using the zipper for cartons of this invention. It is a perspective view which shows another Example of the carton with a zipper using the zipper for cartons of this invention. It is a top view which shows the example of the conventional zipper for cartons.

Explanation of symbols

A Carton zipper of the present invention A1 Carton zipper of the present invention (Example 1)
A2 Zipper for carton of the present invention (Example 2)
A3 Zipper for carton of the present invention (Example 3)
Z Conventional carton zipper (conventional example)
C Carton with zipper C1 Carton with zipper (Example 1)
C2 Carton with zipper (Example 2)
C3 Carton with zipper (Example 3)
P cut line (for the carton zipper of the present invention)
L Cut line (for conventional carton zipper)
L1 Straight line part (of cut line L)
L2 hatched part (of cut line L)
M Opening direction N Opening direction Q Main cut line Q1 Straight part Q2 Shaded part R Auxiliary cut line X Zipper line Y Line parallel to the zipper line W Cover T T Knob part S Between diagonal line end α Main cut line and auxiliary cut line Angle a Distance of the tip of the hatched portion b Length of the auxiliary cut line c Width of the gap between the tip of the main cut line and the auxiliary cut line l Gap part (of the cut line L)
v Notch 11 Side panel 12 Side panel (Front panel)
13 side panel 14 side panel (rear panel)
15 Top panel 16 Bottom panel

Claims (1)

A zipper with cut lines arranged in two rows, wherein the cut lines are discontinuously provided on two rows of zipper lines that are torn along the opening direction, and the main cut line has a small gap width between the cuts And an auxiliary cut line discontinuously provided on a line parallel to the zipper line with a predetermined width inside the zipper line, and the main cut line has an obtuse angle from the straight part and both ends of the straight part. It has a shape with a diagonal line extending obliquely toward the auxiliary cut line, and has a shape provided with a jumper on the straight line part , and the auxiliary cut line is between the tips of the hatched part of the adjacent main cut line. At a position moved in parallel with a predetermined width in the inner direction of the zipper line, the length is equal to or greater than the distance between the tips, and the length of the auxiliary cut line is made smaller than the length of the main cut line In shape Carton for zipper, characterized in that.

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