JP2014133597A - Zipper structure which can be opened in both directions - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure more excellent than a conventional one in terms of operability and a shape or the like of a break line after torn in regards to a zipper which can be torn in both directions.SOLUTION: Break lines 11, 12 of a zipper are structured of a plurality of first cuts and a plurality of second cuts alternately and repeatedly arranged along a virtual line L extending in a breaking direction. When respective regions divided into two by the virtual line L are an upper region and a lower region, the first cut 1 is structured of one continuous curve line having a center part which has a vertex in the upper region and extends to the lower region while curving horizontally from the vertex, and two foot parts which continue to both ends of the center part, have a lowermost point in the lower region, and curve and fold back in a direction toward the upper region. The second cut 2 is axisymmetric with the first cut 1 with respect to the virtual line L, and its vertex is in the lower region. The respective foot parts of the first cut 1 and the second cut 2 overlap in a direction along the virtual line L.

Description

  The present invention relates to a zipper structure for breaking a paper box or other carton. More particularly, the present invention relates to a zipper structure that can be broken in both directions.

  For example, various types of confectionery boxes that are opened by tearing an elongated zipper are conventionally known. Many zippers are configured to tear only in a predetermined direction, but zippers that can be opened from both directions have been proposed so that even visually impaired persons, children, and the like can easily open them (Patent Literature). 1).

Furthermore, Patent Document 2 discloses a specific zipper structure for preventing a cutout portion after breaking the zipper from becoming jagged in a zipper that can be opened from both directions. If the cut-out portion becomes jagged, there are problems such as undesirable appearance and scratching the fingertip.
In addition, a zipper that can be broken in both directions is also disclosed in Patent Document 3. In FIGS. 7 and 8 of Patent Document 3, the cut lines constituting the zipper are curved lines, and it is considered that the cut portions after tearing are smooth. However, when looking closely at the figure, the cuts that appear to be curved at first glance are actually configured as if they were curved lines by combining a plurality of straight lines. In this case, as the cutting blade for forming the cut in the blank, one cutting blade bent at a plurality of locations is used, or a plurality of linear blades are used in combination. It is technically difficult to create a bent cutting blade. In addition, when trying to approximate a curved shape by combining a plurality of straight blades, it is necessary to set the arrangement and interval of each straight blade finely, and press the cutting blade against a blank to form a shot (cut). As the number of times increases, the problem arises that the blade is chipped or worn, resulting in a poor finish.

JP 10-101064 A JP 2005-178788 A Japanese Patent No. 3462192

  In view of the above-mentioned problems of the prior art, the present invention relates to a zipper that can be broken in both directions, and the shape of the broken line after breaking is smooth, and the durability of the cutting blade used to form the zipper It aims at providing the zipper structure excellent in property.

  The present invention has been devised in order to effectively solve the above problems, and provides a zipper structure having the following features.

The zipper structure of this invention opens the said box by tearing off the strip | belt-shaped area | region pinched | interposed into the two breaking lines formed in the wall of the box.
The breaking line is composed of “a plurality of first cuts” and “a plurality of second cuts” that are alternately and repeatedly arranged along a virtual line extending in the breaking direction.
When each region divided into two by the virtual line is an upper region and a lower region, the first cut is “having a vertex in the upper region and extending from the vertex to the lower region while curving left and right. It is composed of a single continuous curve line having “a central part” and “two skirts that are connected to both ends of the central part and have the lowest point in the lower region and turn in the direction toward the upper region while being curved”. ing.
The second cut is symmetrical with the first cut with respect to the virtual line, and has a vertex in the lower region. And as for the 1st cut and the 2nd cut, each skirt part has overlapped in the direction which meets the above-mentioned virtual line.

  It is preferable that the shapes of the first cut and the second cut are symmetric along the virtual line.

  In the present invention, the terms “upper region” and “lower region” are merely what distinguishes the two regions for convenience of explanation. The plane is divided into two regions by one imaginary line, and the two regions are expressed in an easily distinguishable manner. Therefore, the relationship between “upper” and “lower” may be reversed, and the relationship between “right” and “left” may be replaced.

  In the zipper structure of the present invention having the above-described configuration, (i) the first cut and the second cut each have a skirt that is continuous with both ends of the center portion, and the shapes of the first cut and the second cut Is symmetric about the virtual line. (Ii) In the adjacent first cut and second cut, the vertex of the central portion is at the opposite position with respect to the imaginary line, and the skirt portion of one cut turns in the direction toward the skirt portion of the other cut. It will be. Further, (iii) the adjacent first cut and second cut are overlapped in the direction along the imaginary line.

  As a result of the structural features of (i) to (iii) above, the adjacent first cut and second cut extend in the direction of approaching each other so that the skirts of each other take their hands. It becomes. Since this relationship exists on both the left and right sides of one cut, this zipper structure can be broken smoothly in either the left or right direction.

Further, in the zipper structure of the present invention, each of the first cut and the second cut is constituted by one continuous curved line, so that the manufacturing process can be simplified and the cost can be reduced.
That is, since each cut is a curved line, the cutting blade for forming the said cut into a blank can also use the single cutting blade which has a curved shape corresponding to this. In other words, it is not necessary to use one bent cutting edge that is technically difficult to manufacture, and the above-described problems (poor durability and finishability) when a plurality of linear blades are combined can be solved. .
In addition, since the cutting edge has a curved shape, it is possible to make a rupture mark smooth after breaking the zipper.

  The shapes of the first cut and the second cut are more preferably left-right symmetric along the virtual line. In this way, the fracture surface after tearing is more beautiful, and the feel when tearing is not different when the tear is opened from either direction.

The perspective view which shows an example of the paper box provided with the zipper structure of this invention. The enlarged view of the zipper structure in FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a paper box 10 having the zipper structure of the present invention. The paper box 10 is a packaging box that stores and sells confectionery and the like, and includes a zipper structure 20 on the top surface.
1 (a) shows the state before opening, and FIG. 1 (b) shows the state after opening. After opening, the insertion piece 15 is inserted into the slit 16 so that the paper box 10 can be restored. Sealing is possible.

  FIG. 2 is an enlarged view of the zipper structure 20 on the top surface. The zipper structure 20 is composed of an elongated band-like region 13 sandwiched between two break lines 11 and 12 formed on the top wall of the paper box 10, and the paper box 10 is opened by breaking this. The belt-like region 13 can be torn off in either the left or right direction, and includes similar knobs 13a and 13a at both ends. In the figure, the first cut 1 and the second cut 2 constituting the fracture line 11 are further enlarged.

  In the present invention, with respect to a zipper that can be broken in both directions, in order to provide a structure that is superior to conventional ones in terms of operability and the shape of the broken line after breaking, the specific configuration of the broken lines 11 and 12 Devised about. These are described below.

≪Feature 1≫
In FIG. 2, the virtual line (L) is literally a virtual line and indicates the breaking direction of the zipper. The breaking line 12 is composed of “a plurality of first cuts 1” and “a plurality of second cuts 2”. The first cut 1 and the second cut 2 are alternately and repeatedly arranged along the virtual line (L).

For convenience, in FIG. 2, each region divided into two by the virtual line (L) is defined as an upper region and a lower region. The first cut 1 is “a central part having an apex a in the upper area and extending from the apex a toward the lower area while curving left and right” and “the lowermost point in the lower area, connected to both ends of the central area. and a single continuous curve line having two skirt portions that bend in the direction toward the upper region while being curved.
The second cut 2 is symmetrical with the first cut 1 with respect to the virtual line (L).

As described above, the first cut and the second cut have substantially the same shape, but their postures are different by 180 °. That is, the cuts of the same shape are arranged alternately while changing the direction.

By forming each cut with one continuous curved line, there are the following merits. That is, in order to form a cut in the blank in the manufacturing process, the corresponding curved cutting blade is pressed, but the cutting blade can be easily processed. If it is attempted to approximate the curved shape using a single cutting blade that is bent at a plurality of locations, or a plurality of straight blades, it is difficult to create the cutting blade in the former case. It is necessary to set the arrangement and interval of the straight blades finely, which leads to an increase in cost. In addition, when multiple straight blades are used, generally, chipping and abrasion are likely to occur during repeated shots (pressing the cutting blade against the blank to form a cut), resulting in poor durability. In addition, there is a problem that the finish is deteriorated thereby, but in the present invention in which one curved cutting blade can be used, such inconvenience does not occur.
Moreover, when the cutting edge has a curved shape as in the present invention, the fracture mark after the zipper is broken can be made smooth.

≪Feature 2≫
The vertex a of the first cut 1 exists in the upper region, and the vertex a of the second cut 2 exists in the lower region. That is, the vertex a of the first cut 1 and the vertex a of the second cut 2 are located in regions on the opposite side with respect to the virtual line (L). Thereby, it is prevented that the 1st cut 1 and the 2nd cut 2 leave | separate too much in the direction orthogonal to a virtual line (L), and progress of a fracture line advances smoothly.

  Moreover, in the adjacent 1st cut 1 and 2nd cut 2, the skirt part of one cut will be turned in the direction which goes to the skirt part of the other cut. As a result, the skirts of each other extend in the direction of approaching each other as if they are holding hands. Since this relationship exists on both the left and right sides of one cut, this zipper structure can be broken open in either the left or right direction.

  Note that, in the illustrated example, the skirt portion of the first cut 1 is folded back in the direction toward the upper region, but the end thereof is preferably stopped in the lower region. This is because if the skirt regions of the first cut 1 and the second cut 2 that are adjacent to each other are too close, the strength of the paper box decreases at that portion, which is not preferable.

≪Feature 3≫
As for the 1st cut 1 and the 2nd cut 2, each skirt part has overlapped in the direction which meets a virtual line (L). By overlapping the first cut 1 and the second cut 2, it is possible to appropriately guide the progress of the breaking line when breaking the zipper in a predetermined direction.

≪About the upper area and the lower area≫
In the present specification, the terms “upper region” and “lower region” are merely what distinguishes the two regions for convenience of explanation. The plane is divided into two regions by one imaginary line, and the two regions are expressed in an easily distinguishable manner. Therefore, the relationship between “upper” and “lower” may be reversed, and the relationship between “right” and “left” can be considered.

≪Others≫
The specific forms of the first cut 1 and the second cut 2, that is, the dimensions, the degree of bending, and the like are not limited to those illustrated. For example, in the figure, the first cut 1 and the second cut 2 have substantially the same shape except for the different directions, but such a configuration is not necessarily required.
Moreover, as shown in figure, it is preferable that the 1st cut 1 and the 2nd cut 2 are a left-right symmetric shape along a virtual line (L). The reason is that the fracture surface after tearing is more beautiful, and the feel when tearing is not different when it is torn from either direction. However, it is not necessarily symmetrical.

  The first cut and the second cut constituting the break line 12 are the same as described above.

DESCRIPTION OF SYMBOLS 1 1st cut 2 2nd cut 5 Insertion piece 6 Slit 10 Paper box 11, 12 Break line 13 Band-shaped area 20 Zipper structure

The zipper structure of this invention opens the said box by tearing off the strip | belt-shaped area | region pinched | interposed into the two breaking lines formed in the wall of the box.
The zipper structure of the present invention according to claim 1 is a zipper structure for opening a box by tearing a band-like region sandwiched between two break lines formed on a wall of the box, wherein the zipper In a wall having a structure, when the breaking direction is the left-right direction and the direction perpendicular to the breaking direction is the up-down direction, the first breaking line located on the upper side of the two upper and lower breaking lines is arranged alternately. A first cut for lines and a second cut for first break lines, and the second break lines located on the lower side of the two break lines are alternately arranged with first cuts for second break lines and A second cut line for a second break line, a virtual line extending in the left-right direction, and a vertical position that intersects the first cut line for the first break line and the second cut line for the first break line A first imaginary line is set, and a region above the first imaginary line is defined as a first upper region. The lower direction of the imaginary line is the first lower region, and is an imaginary line extending in the left-right direction and intersects the second cut line first cut and the second cut line second cut When the second virtual line is set at the position, the area above the second virtual line is the second upper area, and the area below the second virtual line is the second lower area, The first break line for one break line has a vertex in the first upper region, extends from the vertex to the first lower region while curving left and right, and extends to both ends of the first lower region. And the second cut line for the first breaking line is the first cut line having the lowest point and having two skirts that are bent and turned in the direction toward the first upper region. It has a vertex in the lower region, and extends from the vertex to the first upper region while curving left and right, and at both ends of the central region The first upper region has a top point and is composed of one continuous curved line having two skirts that are bent and turned toward the first lower region. The base of the cut and the second cut for the first break line overlap each other in the left-right direction, and the first cut for the second break line has a vertex in the second upper region and curves from the vertex to the left and right. However, the center part extending toward the second lower region and two ends of the center part, having the lowest point in the second lower region, and turning back in the direction toward the second upper region while curving, The second break line second cut has a vertex in the second lower region and extends toward the second upper region while curving left and right from the vertex. Connected to the center and both ends of the center, the highest point in the second upper region And a second curved line first cut line and a second broken line second cut line, and a second broken line first cut line and a second broken line second cut line line. The cut is characterized in that the respective skirts overlap in the left-right direction.
Further, the present invention according to claim 2 is the zipper structure according to claim 1, wherein the first break line extends toward the first lower region while curving from the left end to the right, and in the first lower region, A first break line left end cut composed of one continuous curved line having a lowest point and having one skirt that turns back in a direction toward the first upper region while curving, from the right end to the left One continuous region that extends toward the first lower region while curving, has a lowest point in the first lower region, and has one skirt portion that turns back in the direction toward the first upper region while curving A first break line right end cut composed of a curved line, the first break line left edge cut and the first break line left end cut arranged right next to the first break line for the first break line At the second cut, each skirt part overlaps in the left-right direction. The first break line right end cut and the first break line right cut located on the left side of the first break line right end cut are overlapped in the left-right direction. The second break line extends toward the second upper region while curving from the left end to the right, has the uppermost point in the second upper region, and is directed toward the second lower region while curving. A second break line left end notch composed of one continuous curve line having one skirt portion folded back to the second upper region while curving from the right end to the left, A second break line right end cut having a continuous curve line having an uppermost point in the region and one skirt portion that is bent and bent in a direction toward the second lower region. , The left end cut for the second break line, and the second break line The first cut for the second break line arranged right next to the left end cut has respective skirts overlapping in the left-right direction, and the right cut for the second break line and the second break line use The first break for the second break line arranged on the left side of the right end cut has respective skirts overlapping in the left-right direction, and the left end cut for the first break line and the left end for the second break line A part of the left end of the band-like region sandwiched between the cuts is a left knob, and a part of the right end of the band-like region sandwiched between the right end cut for the first break line and the right end cut for the second break line Is the right end knob.
According to a third aspect of the present invention, in the zipper structure according to the first or second aspect, the shape of the first cut for the first break line is a central portion of the first cut for the first break line. The shape of the second cut for the first break line is the vertical direction intersecting the vertex of the center of the second cut for the first break line The shape of the first cut for the second break line is left and right with respect to the vertical line intersecting the vertex of the center of the first cut for the second break line. The shape of the second cut for the second break line is symmetrical with respect to the vertical line intersecting the vertex of the central portion of the second cut for the second break line.
According to a fourth aspect of the present invention, there is provided the zipper structure according to any one of the first to third aspects, wherein the left and right positions are located between the first break line and the second break line in the vertical direction. The first break line for the first break line and the second cut line for the second break line, which have the same position in the left-right direction with respect to the direction line, are arranged symmetrically in the vertical direction, and the first break line And the second break line for the first break line and the first cut for the second break line that have the same position in the left-right direction with reference to the line in the left-right direction located in the middle of the vertical direction of the second break line. Are arranged symmetrically in the vertical direction, with the left end cut for the first break line and the second cut line as a reference with respect to the left and right line located in the middle of the first break line and the second break line in the vertical direction. It is arranged symmetrically with the left end cut for the break line, and the first break The right end cut for the first break line and the right end cut for the second break line are arranged symmetrically with respect to a line in the horizontal direction located in the middle of the line and the second break line in the vertical direction. It is what.

The box of the present invention according to claim 5 is a box provided with a zipper structure for opening the box by tearing a band-shaped region sandwiched between two break lines formed on the wall of the box. In the wall having the zipper structure, when the breaking direction is the left-right direction and the direction perpendicular to the breaking direction is the up-down direction, the first breaking line located on the upper side of the two upper and lower breaking lines is alternated A first break line for the first break line and a second break line for the first break line, and the second break line located on the lower side of the two break lines is arranged alternately. A first cut line for the first break line and a second cut line for the second break line, and an imaginary line extending in the left-right direction and intersecting the first cut line for the first break line and the second cut line for the first break line A first imaginary line is set at a position in the up and down direction, and a region above the first imaginary line is defined as a first upper region, An area below one imaginary line is a first lower area and extends in the left-right direction and intersects the second cut line first cut and the second cut line second cut. When a second virtual line is set at a position in the vertical direction, a region above the second virtual line is a second upper region, and a region below the second virtual line is a second lower region The first break line for the first break line has a vertex in the first upper region, extends from the vertex to the first lower region while curving left and right, and is connected to both ends at the central portion. It is composed of one continuous curved line having a lowermost point in the lower region and having two skirts that turn in a direction toward the first upper region while being curved, and the second cut line for the first breaking line is Both the central part and the central part have a vertex in the first lower region and extend toward the first upper region while curving left and right from the vertex. And is composed of one continuous curved line having a top point in the first upper region and having two skirts that are bent and turned in the direction toward the first lower region. The 1st cut and the 2nd cut for the 1st break line have each skirt part overlapped in the left-right direction, and the 1st cut for the 2nd break line has a vertex in the 2nd upper field, and it curves right and left from the vertex While extending toward the second lower region, the central portion extends toward the second lower region, has two points at the bottom, has the lowest point in the second lower region, and turns back in the direction toward the second upper region while curving The second cut line for the second break line has a vertex in the second lower region and extends toward the second upper region while curving left and right from the vertex. Centered on both ends of the It is composed of a single continuous curved line having an upper point and having two skirts that turn back in the direction toward the second lower region while curving, and for the first cut for the second break line and the second break line The second cut is characterized in that the respective base portions overlap in the left-right direction.
According to a sixth aspect of the present invention, in the box having the zipper structure according to the fifth aspect, the first breaking line extends toward the first lower region while curving from the left end to the right. For the first broken line, which is composed of one continuous curved line having the lowest point in the first lower region and having one skirt portion that turns back in the direction toward the first upper region while curving A left end cut and one skirt that extends toward the first lower region while curving from the right end to the left, has a lowest point in the first lower region, and folds in a direction toward the first upper region while curving The first break line right-end cut composed of one continuous curved line having the above-mentioned, and arranged right next to the first break line left-end cut and the first break line left-end cut The second cut line for the first broken line has left and right skirts The first break line right-end cut and the first break line second cut arranged on the left side of the first break line right-end cut are respectively left and right. The second break line extends toward the second upper region while curving from the left end to the right, has the uppermost point in the second upper region, and is curved while being second curved. A second break line left end notch composed of one continuous curve line having one skirt that turns back in the direction toward the region, and extends toward the second upper region while curving from the right end to the left. A second breaking line right end cut having a continuous curve line having an uppermost point in the second upper region and having one skirt portion that is bent in a direction toward the second lower region. The left end cut for the second break line The second break line first cut arranged right next to the second break line left end cut has respective skirts overlapping in the left-right direction, and the second break line right end cut and The second break line first cut arranged on the left side of the second break line right end cut is overlapped in the left-right direction, and the first break line left end cut and A part of the left end of the band-like region sandwiched between the second break line left end cut is a left knob, and is sandwiched between the first break line right end cut and the second break line right end cut. A part of the right end of the belt-like region is a right end knob.
According to a seventh aspect of the present invention, in the box having the zipper structure according to the fifth or sixth aspect, the first cut line for the first break line has a first break line shape. The shape of the second cut for the first broken line is symmetrical with respect to the vertical line intersecting the vertex of the central part in the first cut, and the shape of the second cut for the first broken line is the vertex of the central part in the second cut for the first broken line The shape of the first cut for the second break line is a vertical line that intersects the vertex of the central portion of the first cut for the second break line The shape of the second cut for the second break line is symmetrical with respect to the vertical line intersecting the vertex of the center of the second cut for the second break line. There is something.
In addition, the present invention according to claim 8 is a box having the zipper structure according to any one of claims 5 to 7, wherein the first break line and the second break line are arranged in the vertical direction. The first cut line for the first break line and the second cut line for the second break line, which have the same position in the left and right direction, with respect to the horizontal line located in the middle, are arranged symmetrically vertically. The second break line for the first break line and the second break line that have the same position in the left-right direction with reference to the line in the left-right direction located in the middle of the first break line and the second break line in the up-down direction. The first cut line is arranged symmetrically in the vertical direction, and the left end of the first break line is based on a horizontal line located between the first break line and the second break line in the vertical direction. The cut line and the left edge cut line for the second break line are arranged symmetrically in the vertical direction. The right edge cut for the first break line and the right edge cut for the second break line are vertically symmetrical with respect to a horizontal line located in the middle of the first break line and the second break line in the vertical direction. Are arranged.

Claims (2)

A zipper structure that opens the box body by tearing the band-like region (13) sandwiched between the two break lines (11, 12) formed on the wall of the box body (10),
The break line (11, 12) is composed of a plurality of first cuts (1) and a plurality of second cuts (2) arranged alternately and repeatedly along a virtual line (L) extending in the break direction,
When each region divided into two by the imaginary line (L) is an upper region and a lower region, the first cut (1) is “the lower region has a vertex in the upper region and is curved left and right from the vertex. A continuous portion having “a central portion extending toward the center” and “two skirt portions that are connected to both ends of the central portion and have a lowermost point in the lower region and bend in a direction toward the upper region while being curved” Composed of curved lines,
The second cut (2) is symmetrical with the first cut (1) with respect to the virtual line (L), and has a vertex in the lower region,
The zipper structure, wherein the first cut (1) and the second cut (2) are overlapped in the direction along the virtual line (L). The zipper structure according to claim 1, wherein the shapes of the first cut (1) and the second cut (2) are symmetrical along the virtual line (L).

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