JP2012062080A - Zipper for opening carton - Google Patents

Abstract

A zipper used as an opening means for a paper box or the like, which can be easily torn from both the right and left sides, can be easily attached and processed at the time of manufacture, and the end of the cut portion after opening It is an object of the present invention to provide a double-opening zipper for opening a paper container that has a smooth shape and is easy to use.
A zipper comprising two rows of cut lines arranged in parallel and in the same phase along the opening direction, wherein each row of the cut lines has a symmetrical shape in the front-rear direction or the front-rear direction. A zipper for opening a paper container, comprising a plurality of intermittent cut lines engraved by repeating symmetrical arrangement units.
[Selection] Figure 2

Description

  The present invention relates to a zipper for opening a paper container provided on the outer surface of the structure of an article wrapping paper container. More specifically, the present invention relates to a zipper for opening a paper container that can be easily opened from either one of the left and right directions without restricting the opening direction.

Conventionally, a tear band called a zipper may be provided as an opening means for an article wrapping paper container such as a paper box. This zipper is provided on the outer surface of a paper box or the like with one or two rows of cuts engraved by, for example, a Thomson blade, and each row of cuts has an inward portion connected to one end of the outer side. The cuts are intermittent.
With this zipper, when tearing from one side, the tear that tries to deflect inward from the front edge of the outer edge of the front cut reaches the inward part of the next cut, cutting the paper material without breaking the cut line Can be opened.
However, when the zipper as described above is torn from the opposite direction, the gap between the cut lines may be broken, and the paper material may not be cut straight and cannot be opened.

  The conventional zipper as described above is designed to break and open the outer surface of the structure of the paper container by picking and pulling up one end such as the opening start knob, and is easy to open in one direction during the opening operation. The direction of the opening is indicated on the surface of the container near the end of the opening side of these zippers by displaying an arrow or by printing and displaying the letters “OPEN”. There are many cases.

However, even if the opening direction is instructed to the container in this way, the opening direction is inadvertently inadvertently opened, or it is difficult for an infant or a blind person to recognize the opening direction indication. In such a case, it may be difficult to open the container easily.
In addition, the fact that the opening direction is fixed to one side also means that the ease of opening differs depending on whether the opener is right-handed or left-handed, and this is also a limitation in terms of ease of opening work.
For this purpose, various proposals have been made to make it possible to easily tear a zipper used as an opening means such as a paper box from either end toward the other end.

  In Patent Documents 1 to 4, in a zipper in which a plurality of cut lines are arranged in parallel, a tear that is to be opened from the front end of the front cut is reached even if the tear is torn from any direction. A zipper configuration and arrangement that does not deviate from the row is disclosed.

  That is, in Patent Document 1, two cut lines are arranged in parallel, and each cut line is intermittently formed by a cut line in which a short side portion is connected to one end of the long side portion and a jumping portion is connected to the other end in a zigzag manner. Some examples of proposals that devised the cuts on curved lines or broken lines and the arrangement of them, including paper tear zones (zippers) with the tips of the short sides of adjacent cuts positioned inside the tip of the top Is shown.

Further, in Patent Document 2, a long straight cut line that is intermittently interrupted in two rows at the same phase along the opening direction, and both ends of each long cut line are perpendicular to the opening direction of the cut line. A short straight cut line with a short straight cut line that is spaced apart in parallel, the length of the straight cut line, a separation distance of the short straight cut line that is spaced apart in parallel, and a short straight line that protrudes perpendicularly from the long straight cut line to both sides. A zipper for opening a paper container has been proposed in which a specific range of magnitude relation is set between the overhang lengths of the cut lines.

Furthermore, in Patent Document 3, in a tear strip (zipper) of paper material in which two cut rows where a number of cuts are interrupted are arranged in parallel, the cuts in each cut row are outwardly directed to one end of a basic portion parallel to the opening direction. In addition, a zipper has been proposed in which the inward portions are provided apart from the base end of the outward portion, and the incisions in the opposing row of cuts face each other in opposite directions (symmetric positions).
In this way, even when the angle and speed of pulling the zipper are different, in each opposing row of cuts, a tear is connected from the front cut to the next cut, and the paper material can be torn without interruption from both directions. ing.

  In Patent Document 4, a zipper arranged in an intermittent broken line shape, such as a U-shape or a horizontal T-shape, used in a paper container opening means commonly called a “zipper carton”, There has been proposed a zipper that can be opened from both the left and right directions without limiting the opening direction by providing a broken line through a connecting portion between a straight line cut and a U-shaped cut. Furthermore, in this zipper, the opening portions at both ends are provided with a jagged shape, so that a partially sighted person, a visually impaired person, an elderly person, an infant, etc. can recognize the opening part.

  According to the configuration and arrangement of the zipper cut shown in the above proposal, opening from both directions can be achieved by allowing the tear generated from the tip of the front cut to reach the next cut regardless of which direction it tears. However, since the structure and arrangement of the cuts are complicated, new problems in manufacturing and use of paper containers have become apparent.

  One is that the Thomson blade that forms the cut is required to have a more complicated shape, which not only makes the manufacturing complicated and expensive, but also may cause an error in the mounting position or mounting direction if it is severe.

  The other is that the edge shape of the cut part after opening becomes an irregular shape with an acute angle, and it is not smooth and easy to catch when touched by hand. There is also a risk of injury with hard paper. Is to come.

Japanese Patent No. 3462192 Japanese Patent No. 3893646 Japanese Utility Model No. 3079649 JP 2004-18083 A

  A zipper used as an opening means for paper boxes, etc., which can be easily torn in both directions, such as left and right, is easy to attach and process blades during manufacture, and the end shape of the cut portion after opening It is an object of the present invention to provide a zipper for opening a paper container that is smooth and easy to use.

The invention according to claim 1 of the present invention for solving the above-mentioned problems is a zipper composed of two rows of cut lines arranged in parallel and in the same phase along the opening direction, each comprising the cut lines A zipper for opening a paper container is characterized in that the row of the paper has a shape that is symmetrical in the front-rear direction with respect to the opening direction, or is provided with a number of intermittent cut lines that are engraved by repeating the arrangement units that are symmetrical in the front-rear direction.

  The invention according to claim 2 of the present invention is the zipper for opening a paper container according to claim 1, wherein opening start knobs are provided at both ends in the opening direction of the two lines of cut lines.

  The invention according to claim 3 of the present invention is characterized in that the cut line is a curve, and adjacent cut lines that are interrupted are provided so as to be reversed with respect to the opening direction. Opening zipper.

  In the invention according to claim 4 of the present invention, the cut line is a curved line, and the position of the gap between adjacent cut lines is formed at a position deviating from the apex of the curved line in the direction perpendicular to the opening direction. The paper container opening zipper according to claim 3.

According to the invention according to claim 1 of the present invention, the zipper is composed of two rows of cut lines arranged in parallel and in the same phase along the opening direction, and each row of the cut lines is related to the opening direction. It is a zipper for paper container opening that has a symmetric shape or a large number of intermittent cut lines engraved by repeating a symmetric arrangement unit, so that the individual zipper arranged in a line along the opening direction The cut lines are in the same position as the cut lines of the same shape arranged in the other row arranged at the same position with respect to the opening direction, and the two rows of cut lines corresponding to the respective positions in the opening direction are repeated in the opening direction. A zipper in which the order (phase) and shape are the same in the arrangement, so that the lines are symmetrical with respect to the front and rear in the opening direction, and the cut lines of each row are arranged in parallel and in phase. You have me.
As a result, the zipper for opening the paper container of the present invention can be easily torn from both the left and right directions for the operation of opening from both ends in the opening direction, and starts opening from either end. Can be made into a zipper that has the same cleavage conditions and can be easily opened.
In addition, since the shape and arrangement of the two lines of cut lines are the same, it is easy to attach the Thomson blade to cut the cut lines at the time of manufacture, and the arrangement direction of the two lines of cut lines is not mistaken.
Thereby, it is possible to provide a zipper for opening a paper container that can be torn from any direction at both ends of the opening direction of the zipper and can be easily attached to the blade during manufacture.

  According to the invention according to claim 2 of the present invention, since the opening start knobs are provided at both ends of the opening direction of the two rows of cut lines, the opening operation can be easily started in the same way when tearing from either direction. It becomes a zipper for opening paper containers.

  According to the invention of claim 3 of the present invention, the cut line is a curved line, and the adjacent cut lines that are intermittent are provided so as to be reversed with respect to the opening direction. Thus, the end shape of the cut portion after opening becomes smooth and easy to use.

  According to the invention of claim 4 of the present invention, the cut line is a curve, and the position of the gap between adjacent cut lines is formed at a position deviating from the vertex of the curve with respect to the direction perpendicular to the opening direction. As a result, the tip of the end of the opening portion after tearing becomes smooth, and the end shape of the cut portion after opening becomes smoother and easier to use.

Thus, according to the zipper for opening the paper container of the present invention, it can be torn from both ends in the opening direction with a zipper used as an opening means such as a paper box, and the attachment of the blade at the time of manufacture is simple, It is possible to provide a zipper for opening a paper container in which the end shape of the cut portion after opening is smooth and easy to use.

An example of a paper container provided with a zipper A for opening a paper container of the present invention on the top surface (blanks plan view) An example (schematic diagram) of a paper container provided with a zipper A for opening a paper container of the present invention on the top surface An example of a paper container provided with a zipper B for opening a paper container of the present invention on the side surface (blanks plan view) An example (schematic diagram) of a paper container provided with a zipper B for opening a paper container of the present invention on the side surface Form explanatory drawing of zipper A for paper container opening of this invention Shape explanatory drawing of zipper B for paper container opening of this invention Shape explanatory drawing of zipper C for paper container opening of this invention Form explanatory drawing of zipper D for paper container opening of this invention

Hereinafter, an embodiment of a zipper for opening a paper container and a method of using the same according to the present invention will be described with reference to the drawings as necessary.
FIG. 1 is a schematic plan view showing blanks as an example of a paper container provided with a zipper for opening a paper container of the present invention. FIG. 2 is a schematic view of a paper container in which the blanks of FIG. 1 are assembled.

2. Description of the Related Art Conventionally, a paper container such as a paper box that is bent by a ruled line has used paper or a laminate based on paper depending on the nature of the contents stored in the container and the storage conditions.
Then, this paper or a laminate using the paper as a base material is punched into a predetermined shape according to the shape of the container, and at the same time, it is formed as blanks with ruled lines for bending. Paper containers are manufactured by bending the blanks along ruled lines, assembling them, and bonding the necessary parts.

The paper container shown in FIG. 2 can be easily manufactured by the usual method from the blanks shown in FIG.
For example, in the case of forming a box by folding a general paper box blank, first, the blank (1) is supplied from the paper feeding unit to the folding unit and then folded, and then supplied to the bottom folding unit. The bottom plate (3) is folded inward and overlaid on the side plate, and the ears are folded outward.
Next, in the gluing portion, an adhesive material layer is formed on the back surface side of the ear portion and the front surface side of the adhesive flap (6), and then the remaining bottom plate is folded inward and overlapped on the side plate.
Next, in the main folding part, by folding the side plate and folding one bottom plate on the other bottom plate, the adhesive layer of the ear part of one bottom plate adheres to the other bottom plate, and the adhesive layer of the adhesive flap Is bonded to the side plate to complete the folded paper box.

  In this state, the drying of the bonded portion of the paper box has not been completed, so the paper box is transported while being crimped by a pair of upper and lower pressure-bonding belts of the pressure-conveying and transporting portion to promote the adhesion of the paper box, and the molding is completed. Is discharged to the next process. A paper container (11) is completed by filling the folded paper box with a filling device and sealing a necessary portion.

The zipper for opening a paper container according to the present invention is provided on any of the constituent plates of the structure constituting the paper container (11), such as a top plate, a side plate (front plate, back plate, left and right side plates, etc.), or a bottom plate. It is formed. For example, among the constituent plates, the side plates may be continuously provided on a part of the side plates or all of the side plates over the entire circumference.
FIGS. 1 and 2 show a state in which a paper container opening zipper (7) is provided on the top plate (2) of one paper container (11). As an example of the discontinuity and arrangement of the paper container opening zipper (7), the example of the A pattern shown in detail in FIG. 5 is given for the sake of simplification of description. For example, as shown in FIG. 6 to FIG. A zipper shape may be used.

  The zipper for opening a paper container of the present invention is a zipper comprising two rows of cut lines arranged in parallel and in the same phase along the opening direction, and each row of the cut lines is symmetrical in the front-rear direction with respect to the opening direction. It is a zipper for opening a paper container having a plurality of intermittent cut lines that are shaped or engraved by repeating a symmetrical arrangement unit.

  As shown in FIGS. 1 and 2, the zipper of the present invention is formed from a plurality of parallel two rows of cut lines formed along the opening direction (left-right direction in the figure) on the top plate (2) of the paper container (11). The row formed by one of the two cut lines in parallel and the row formed in parallel with the line are formed by a number of cut lines that are interrupted at the same phase along the opening direction. Are formed on the same surface at a certain distance.

  3 and 4, the zipper of the present invention is composed of a large number of parallel two rows of cut lines formed in the side plate (4) of the paper container (11) along the opening direction (left-right direction in the figure). Of the two rows of cut lines, the row formed by one row of cut lines and the row formed in parallel therewith consist of a number of cut lines that are interrupted in two identical phases along the opening direction, The case where rows having the same shape are alternately formed at the same distance and on the same surface is shown.

5 to 8 are enlarged views showing the shapes of some of the embodiments of the zipper of the present invention. FIG. 5 shows the shape and arrangement of the cut line of the zipper A (7) formed on the top plate (2) of the paper container (11) in FIGS. Similarly, FIG. 6 shows the shape and arrangement of the cut line of the zipper B (8) formed on the side plate (4) of the paper container (11).
7 and 8 show the shape and arrangement of the cut lines of the zipper C (9) and the zipper D (10) of other shapes.
In the zipper of the present invention, the combination of the location where the zipper is formed and the shape and arrangement of the zipper cut line is an example for explanation, and the formation location is not limited to the top plate but may be a side plate or a bottom plate. This also applies to the following description.

As a typical example of the embodiment of the zipper of the present invention, a case where the zipper A (7) shown in FIGS. 1, 2, and 5 is formed on the top surface of the paper container (11) will be described.
As shown in FIG. 5, the zipper A has two rows of cut lines (A) formed along the opening direction indicated by the white arrows, and opening start knobs (a) (a ′) at both ends of the zipper A. ) Is formed by two cut lines.

  The cut line (A) is composed of a long straight line cut (12) and an end Y-shaped cut line (Y) connected to both ends thereof, and each cut line is intermittently repeated along the opening direction at a constant cycle. Are lined up. A line with another line of cut lines (A) is formed at a position perpendicular to the opening direction at a certain distance from the line with the line of cut lines (A). (A) is close to the two cut lines forming the opening start knobs (a) and (a ′) at both ends. The outer end of the opening start knob (a) (a ′) may be formed so as to slightly protrude from the edge of the top plate (2), which is a component plate, if necessary. A slight uncut portion (break line gap, not shown) for connecting the outer end portion to the component plate (2) before the opening operation may be formed.

The zipper A for opening the paper container of the present invention can be opened from either the left end opening start knob (a) or the right end opening start knob (a ′) of FIG. 5, and the opening start knob (a) with a finger. By picking up and pulling up and pulling upward as it is, a linear breaking force acting in the opening direction by the breaking line in the opening direction acts, first breaking the first joint, and then breaking in the next opening direction The next connecting portion is broken by the linear dividing force toward the opening direction by the line, and the zipper A is band-shaped to sequentially break the connecting portion and open the paper container (11).

  At this time, since the cut line (A) is a cut line provided with Y-shaped cuts (Y) at both ends of the straight long cut (12), the direction of breakage of the joint portion is slightly different from the center of the next cut line. Even so, it is possible to break the line on which the cut lines (A) lined up in the opening direction are lined up.

Further, the paper container opening zipper of the present invention is a zipper comprising two rows of cut lines arranged in parallel and in the same phase along the opening direction, and each row has a shape that is symmetrical in the front-rear direction with respect to the opening direction or Since the zipper for opening the paper container is provided with a number of intermittent cut lines engraved by repeating the arrangement unit symmetrical in the front and back direction, either end for the operation to open from either end (front or back) in the opening direction Even if it starts from a part, it can be made a zipper that can be easily opened from an arbitrary end part under the same cleavage conditions.
In addition, since the shape and arrangement of the two lines of cut lines are the same, it is easy to attach the Thomson blade to cut the cut lines at the time of manufacture, and the arrangement direction of the two lines of cut lines is not mistaken.

As another typical example of the embodiment of the zipper of the present invention, a case where the zipper B (8) shown in FIGS. 3, 4, and 6 is formed on the side surface of the paper container (11) will be described.
As shown in FIG. 6, the zipper B has two rows of cut lines (B) formed along the opening direction indicated by the white arrows, and unsealing start knobs (b) (b ′) at both ends of the zipper B. ) Is formed by two cut lines.

  The cut line (B) is composed of a long curved line (12) and an end Y-shaped line (Y) connected to both ends of the line, and is adjacent to a vertically symmetrical curved line as shown in FIG. Are alternately arranged in the opening direction. Another row of cut lines (B) is formed at a position separated from the one row of cut lines (B) by a certain distance perpendicular to the opening direction, and the two rows of cut lines ( B) is close to the two cut lines forming the opening start knobs (b) and (b ′) at both ends. The outer end of the opening start knob (b) (b ′) may be formed so as to slightly protrude from the edge of the side plate (4), which is a component plate, if necessary. A slight uncut portion for connecting the end portion to the component plate (4) before the opening operation may be formed.

  The paper container opening zipper B of the present invention can be opened from either the left end opening start knob (b) or the right end opening start knob (b ′) of FIG. 6, and the opening start knob (b) can be opened with a finger. By picking up and pulling up and pulling upward as it is, a linear breaking force acting in the opening direction by the breaking line in the opening direction acts, first breaking the first joint, and then breaking in the next opening direction The next connecting portion is broken by a linear dividing force toward the opening direction by the line, and the zipper B is band-shaped to sequentially break the connecting portion and open the paper container (11).

  At this time, since the cut line (B) is a cut line in which Y-shaped cuts (Y) are provided at both ends of the long curved line (12), the direction of breakage of the joint portion is slightly different from the center of the next cut line. Even so, it is possible to break the line of the cut line (B) that is intermittent in the opening direction.

  In addition, the zipper B (8) for opening the paper container has a long outline (12) that forms the cut line (B), so that the contour line connecting the ends broken at the time of opening is soft as a whole. It becomes a curve, and it is a gentle curve with little finger catching both visually and tactilely.

  As described above, the zipper B (8) for opening the paper container, as with the zipper A (7), can be opened at any end with respect to the operation of opening from either end (front and back) in the opening direction. Even if it starts from the part, it can be made into a zipper that can be easily opened both sides with the same cleavage conditions, and it is easy to install a Thomson blade for engraving the cut line at the time of manufacture. There is no mistake in the installation direction.

FIG. 7 shows an enlarged plan view of a zipper C (9) as another embodiment of the zipper for opening a paper container of the present invention.
The zipper C has two rows that form two rows of cut lines (C) formed along the opening direction indicated by the white arrows, and opening start knobs (c) (c ′) at both ends of the zipper C. It is constituted by a cut line.

  The cut line (C) is formed by a curved cut line, and the cut lines having a symmetrical curve shape with respect to the opening direction are intermittently arranged in the opening direction at intervals adjacent to each other with the cut line gap (13). Another row of cut lines (C) is formed at a position away from the row of cut lines (C) by a certain distance in the opening direction. The two rows of cut lines (C) Is close to the two cut lines forming the opening start knobs (c) and (c ′) at both ends. The outer end of the opening start knob (c) (c ′) may be formed so as to slightly protrude from the edge of the side plate (4), which is a component plate, if necessary. A slight uncut portion for connecting the end portion to the component plate (4) before the opening operation may be formed.

  The zipper C (9) for opening the paper container of the present invention can be opened from either end of the opening start knob (c) at the left end of FIG. 7 or the opening start knob (c ′) at the right end, and the opening start knob (c) Is lifted by pulling it with your finger and pulling it up as it is, a linear breaking force acting in the opening direction by the cut line in the opening direction acts, first breaking the first joint, then the next opening The next connecting portion is broken by a linear dividing force toward the opening direction by the direction cut line, and the zipper C is band-shaped to sequentially break the connecting portion, thereby opening the paper container (11).

  At this time, the zipper C (9) for opening the paper container was broken at the time of opening because the cut line (C) was a curve and there was no unevenness that would be a zigzag break line in the gap of the cut line. The contour line connecting the ends becomes a soft curve as a whole, and it becomes a curve that is both visually and tactilely friendly.

  Further, the zipper C (9) for opening the paper container, as with the zipper A (7) and zipper B (8), can be used for either end of the opening direction (front and back). Even if it starts from the same, it can be made into a zipper that can be opened easily with the same cleavage conditions, and it is easy to install a Thomson blade for engraving the cut line at the time of manufacture, and engraving two lines of cut line There is no mistake in the arrangement direction.

FIG. 8 shows an enlarged plan view of a zipper D (10) as another embodiment of the zipper for opening a paper container of the present invention.
The zipper D has two lines that form two rows of cut lines (D) formed along the opening direction indicated by the white arrows, and opening start knobs (d) (d ′) at both ends of the zipper D. It is constituted by a cut line.

The cut line (D) consists of a curved cut line, and as shown in the figure, the cut lines having a symmetrical curve shape with respect to the direction perpendicular to the opening direction are alternately arranged in the opening direction. Another row of cut lines (D) is formed at a position perpendicular to the row of cut lines (D) in a vertical direction. The two rows of cut lines (D) Are close to the two cut lines forming the opening start knobs (d) and (d ′) at both ends.
The outer end of the opening start knob (d) (d ′) may be formed so as to slightly protrude from the edge of the side plate (4), which is a component plate, if necessary. A slight uncut portion for connecting the end portion to the component plate (4) before the opening operation may be formed.

  The zipper D (10) for opening a paper container of the present invention can be opened from either the left end opening start knob (d) or the right end opening start knob (d ') of FIG. By picking up and pulling up and pulling upward as it is, a linear breaking force acting in the opening direction by the cut line in the opening direction acts, first breaking the first joint, and then in the next opening direction The next connecting portion is broken by the linear dividing force toward the opening direction by the cut line, and the zipper D becomes a belt shape to sequentially break the connecting portion and open the paper container (11).

At this time, the zipper D (10) for opening the paper container is broken at the time of opening because the cut line (D) is a curve and there is no unevenness that forms a zigzag break line in the gap of the cut line. The contour line connecting the ends becomes a soft curve as a whole, and it becomes a curve that is both visually and tactilely friendly.
In addition, since the position of the gap (13) of the cut line that is formed intermittently in the opening direction of the zipper D is out of the peak of the corrugation that forms a wavy smooth edge at the time of opening. The touch feels a milder edge.

  Further, the zipper D (10) for opening the paper container, in the same way as the zipper A (7), zipper B (8), and zipper C (9), is operated for opening from either end (front and back) in the opening direction. It can be made a zipper that can be easily opened at both ends even if it starts from either end, and it is easy to install a Thomson blade for engraving the cut line at the time of manufacture. There is no mistake in the direction of the cut line.

  As described above, according to the zipper for opening a paper container of the present invention, the zipper used as an opening means for a paper box or the like can be torn from both directions, and the blade can be easily attached at the time of manufacture. It is possible to provide a zipper for opening a paper container in which the shape of the end portion of the subsequent cut portion is smooth and easy to use.

  In the example of the embodiment described above, the arrangement cycle in the opening direction of the cut line of the zipper for opening the paper container is symmetric with respect to the case where the same shape of the cut line is adjacent (when the arrangement cycle in the opening direction is one). The case where the cut line is adjacent (when the arrangement period in the opening direction is every two) is mainly shown. In the zipper for opening a paper container of the present invention, the number of arrangement cycles may be three or more as long as the phase of the parallel line of cut lines is not limited to two.

DESCRIPTION OF SYMBOLS 1 ... Paper container blanks 2 ... Top plate 3 ... Bottom plate 4 ... Side plate 5 ... Bending ruled line 6 ... Adhesive flap 7 ... Zipper A
8 ... Zipper B
9 ... Zipper C
10 ... Zipper D
11 ... Paper container 12 ... Long cut 13 ... Cut line gap A ... Cut line A
B ... Cut line B
C ... Cut line C
D: Cut line D
a ... opening knob a '... opening knob b ... opening knob b' ... opening knob c ... opening knob c '... opening knob d ... opening knob d' ... opening knob Y ... Y-shaped cut at the end

Claims (4)

  A zipper comprising two rows of cut lines arranged in parallel and in the same phase along the opening direction, wherein each row of the cut lines has a shape that is symmetrical in the longitudinal direction with respect to the opening direction, or an arrangement unit that is symmetrical in the longitudinal direction A zipper for opening a paper container, comprising a plurality of intermittent lines engraved by repeating the above.   2. The zipper for opening a paper container according to claim 1, wherein opening opening knobs are provided at both ends in the opening direction of the two lines of cut lines.   The zipper for unsealing a paper container according to claim 1 or 2, wherein the cut line is a curved line, and adjacent cut lines that are interrupted are reversed with respect to a direction perpendicular to the opening direction.   The said cut | interruption line is a curve, The position of the clearance gap between the adjacent cutting lines is formed in the place which remove | deviated from the vertex of the said curve regarding the orthogonal | vertical direction of the opening direction. Zipper for opening paper containers.