WO2021187762A1 - Tamper-proof zipper and tamper-proof zipper bag comprising same - Google Patents

Abstract

The present invention relates to a tamper-proof zipper which can achieve a firm coupling so as to effectively prevent a plastic bag from being illegally opened, and a tamper-proof zipper bag including same, and comprises: a first zipper strip including a first band portion, a first connection portion, a first base portion, a first hook portion including a first inner hook portion and a first outer hook portion, and a first support; and a second zipper strip including a second band portion, a second connection portion, a second base portion, a second hook portion including a second inner hook portion and a second outer hook portion, and a second support, and being coupled to the first zipper strip to seal the plastic bag, wherein the first connection portion and the second connection portion deviate respectively from the centers of the first band portion and the second band portion and biased to one side.

Description

Anti-tampering zipper and tamper-proof zipper bag comprising the same

The present invention relates to a tamper-evident zipper and an tamper-evident zipper bag comprising the same, and more particularly, to a tamper-evident zipper capable of effectively preventing a plastic bag from being opened illegally due to a strong bond, and an tamper-evident prevention zipper comprising the same It's about zipper bags.

In general, a plastic bag used for packaging or storing foodstuffs, etc. is made of vinyl, and the inside is sealed by a zipper structure composed of male and female coupling parts. More specifically, in the plastic bag, a zipper strip is installed on the inner wall of the inlet side in the width direction, and when the contents are put inside and pressure is applied to the zipper strip from the outside, the inside is sealed. When pulling in opposite directions, the zipper strip is easily released, so it has the advantage of being reusable.

On the other hand, a plastic bag is also used to package duty free goods or the like, or to store items such as a removable storage device (USB: Universal Serial Bus), a mobile phone, and a camera in a place where security is required. However, as described above, when one side and the other side of the conventional plastic bag are pulled in opposite directions, the coupling of the zipper strip is easily released, so there is a problem in that it is not easy to use when security is required. That is, even if the plastic bag containing duty-free goods or security items is illegally opened and some of the stored items are removed or new items are added, it cannot be identified, so the reliability of the stored items in the plastic bag is lowered. .

Accordingly, there is a need for a zipper having a structure that can effectively prevent the plastic bag from being opened illegally by strong bonding, and a zipper bag having a structure capable of discriminating whether or not the plastic bag has been opened illegally.

An object of the present invention is to provide an anti-tampering zipper that can effectively prevent a plastic bag from being opened illegally by a strong coupling.

Another technical object to be achieved by the present invention is to provide a zipper bag for preventing unauthorized opening, which can identify whether or not it is illegally opened.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

An tamper-evident zipper according to an embodiment of the present invention for achieving the above technical object includes a first band part attached to one side inner wall of a plastic bag, a first connection part extending from the first band part, and the first connection part A first hook portion extending from and including a first base portion overlapping with the first band portion and formed side by side, a first inner hook portion and a first outer hook portion protruding side by side from the first base portion, and the first inner portion A first zipper strip spaced apart from the hook part and including a first support part protruding from the first base part, and a second band part formed in parallel with the first band part and attached to the other inner wall of the plastic bag, the second A second connecting portion extending from the band portion, a second base portion extending from the second connecting portion and overlapping with the first base portion formed side by side, a second inner hook portion and a second outer side protruding side by side from the second base portion A second hook part including a hook part and hook-coupled to the first hook part, and a second support part spaced apart from the second inner hook part and protruding from the second base, and coupled with the first zipper strip and a second zipper strip for sealing the plastic bag, wherein the first connection part and the second connection part are formed to be biased toward one side away from the center of the first band part and the second band part, respectively, and the first support part and the second support part is formed to extend in a straight line from the first connection part and the second connection part, and the first hook part and the second hook part extend from the first base part and the second base part, respectively. a pillar and a hook bent toward the first support portion and the second support portion at the end of the pillar, respectively, wherein the first support portion and the first inner hook portion press the column of the second outer hook portion, and The second support part and the second inner hook part press the post of the first outer hook part, and the first inner hook part and the second inner hook part are formed so that the posts are spaced apart from each other.

The first base part and the second base part may be formed to be thicker than the first band part and the second band part, respectively.

The first base part and the second base part may be gradually thickened as they move away from the first connection part and the second connection part, respectively.

The distance between the first base part and the first band part and the distance between the second base part and the second band part may gradually become narrower as the distance from the first connection part and the second connection part increases.

The pillar may be formed in a tapered shape that decreases in width as it moves away from the first base part or the second base part.

The first outer hook portion and the second outer hook portion may each be bent in the direction of the hook.

The first inner hook portion and the second inner hook portion are each formed in a tapered shape in which the width of the pillar becomes smaller as the distance from the first base portion or the second base portion increases, and the opposite side of the hook is inclined. can be formed.

The first connection part, the first base part, the first hook part, and the first support part may be formed in a point symmetrical shape with the second connection part, the second base part, the second hook part, and the second support part. can

The tamper-evident zipper bag according to an embodiment of the present invention for achieving the above other technical problem includes a plastic bag, a first band part attached to one inner wall of the plastic bag, a first connection part extending from the first band part, and the A first base portion extending from the first connection portion and overlapping with the first band portion and formed side by side, a first hook portion including a first inner hook portion and a first outer hook portion protruding side by side from the first base portion, and the second A first zipper strip spaced apart from the inner hook portion and including a first support portion protruding from the first base portion, and a second band portion formed in parallel with the first band portion and attached to the other inner wall of the plastic bag, the second A second connecting portion extending from the second band portion, a second base portion extending from the second connecting portion and overlapping with the first base portion and formed side by side, a second inner hook portion and a second outer hook protruding side by side from the second base portion It includes a second hook part hook-coupled to the first hook part, and a second support part spaced apart from the second inner hook part and protruding from the second base, and is coupled with the first zipper strip. and a second zipper strip sealing the plastic bag, wherein the first connecting portion and the second connecting portion are formed to be biased toward one side away from the centers of the first and second band portions, respectively, and the first support portion and The second support part is formed to extend in a straight line from the first connection part and the second connection part, and the first hook part and the second hook part are, respectively, the pillars extending from the first base part and the second base part. and a hook bent toward the first support part and the second support part from the post end, respectively, wherein the first support part and the first inner hook part press the column of the second outer hook part, 2 The support part and the second inner hook part press the post of the first outer hook part, and the first inner hook part and the second inner hook part include an unauthorized opening prevention zipper formed by separating the posts from each other. all.

The first base part and the second base part may be formed to be thicker than the first band part and the second band part, respectively.

The first base part and the second base part may be gradually thickened as they move away from the first connection part and the second connection part, respectively.

The distance between the first base part and the first band part and the distance between the second base part and the second band part may gradually become narrower as the distance from the first connection part and the second connection part increases.

The first connection part, the first base part, the first hook part, and the first support part may be formed in a point symmetrical shape with the second connection part, the second base part, the second hook part, and the second support part. can

A distance from the inlet end of the plastic bag to the first support part or the second support part may be formed within 10 mm.

One end of each of the first band portion and the second band portion is disposed on the same line as the inlet end of the plastic bag, and may be entirely attached to the inner wall of the plastic bag.

In the plastic bag, the inlet end of the other side wall is longer than the inlet end of the one side wall, and the end of the first band portion is disposed on the same line as the inlet end of the one side wall of the plastic bag and is attached to the inner wall of the plastic bag as a whole, and the second The end of the band portion is spaced apart from the inlet end of the other side wall of the plastic bag and may be attached as a whole to the inner wall of the plastic bag.

The plastic bag may be formed with a notch (notch) on at least one side.

The tamper-evident zipper bag may further include a perforation line connected to the notch and extending in a width direction of the plastic bag.

According to the present invention, since the coupling between the first zipper strip and the second zipper strip is strong, it is possible to effectively prevent the plastic bag from being opened illegally.

In addition, since the plastic bag can only be opened by twisting and tearing the plastic bag based on the notch formed in the plastic bag or cutting the plastic bag using a cutting tool such as scissors or a knife, it is possible to identify whether the plastic bag is illegally opened.

1 is a view showing an unauthorized tampering prevention zipper bag to which an unauthorized opening prevention zipper is attached according to an embodiment of the present invention.

FIG. 2 is a longitudinal cross-sectional view of the tamper-evident zipper of FIG. 1 .

3 is a longitudinal cross-sectional view illustrating a state in which the tamper-evident zipper is separated.

4 is an actual longitudinal cross-sectional photograph of the tamper-evident zipper.

5 is an operational diagram for explaining the operations of the tamper-evident zipper and the tamper-evident zipper bag.

6 is a longitudinal cross-sectional view showing a zipper bag for preventing unauthorized opening according to another embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, the tamper-evident zipper 1 and the tamper-evident zipper bag 3 according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5 .

1 is a view showing an unauthorized tampering prevention zipper bag to which an unauthorized opening prevention zipper is attached according to an embodiment of the present invention.

The tamper-evident zipper bag 3 according to the embodiment of the present invention is formed in a strip shape elongated in one direction to seal the plastic bag 2 and includes a zipper 1 to prevent unauthorized opening, the plastic bag 2 It is a household item that effectively protects the items contained inside from the external environment. The tamper-evident zipper bag 3 is, for example, when packing duty free goods or storing items such as a removable storage device (USB; Universal Serial Bus), a mobile phone, and a camera in a place where security is required. can be used

The anti-tampering zipper 1 has a strong bond between the first zipper strip (see 10 in FIG. 2 ) and the second zipper strip (see 20 in FIG. 2 ) to effectively prevent the plastic bag 2 from being opened illegally. can In addition, the tamper-evident zipper bag 3 must be cut by twisting and tearing the plastic bag 2 based on the notch 2a formed in the plastic bag 2 or using a cutting tool such as scissors or a knife to cut the plastic bag 2 Since only the opening is possible, there is a feature that can identify whether the plastic bag (2) is illegally opened.

Hereinafter, with reference to FIGS. 2 to 4 , the tamper-evident zipper 1 and the tamper-evident zipper bag 3 will be described in detail.

FIG. 2 is a longitudinal cross-sectional view of the tamper-evident zipper of FIG. 1 , FIG. 3 is a longitudinal cross-sectional view showing the tamper-evident zipper is separated, and FIG. 4 is an actual longitudinal cross-sectional photograph of the tamper-evident zipper.

The tamper-evident zipper (1) according to the present invention includes a first zipper strip (10) and a second zipper strip (20).

The first zipper strip 10 forms a part of the tamper-evident zipper 1 , and may be attached to one side inner wall of the plastic bag 2 along the width direction. The first zipper strip 10 includes a first band portion 11 , a first connection portion 12 , a first base portion 13 , a first hook portion 14 , and a first support portion 15 . do.

The first band portion 11 is a band-shaped member extending in one direction, and is attached to the inner wall of one side of the plastic bag 2 , and a first base portion 13 and a first hook portion 14 to be described later, and The first support 15 is supported. The first band portion 11 is arranged in parallel with the inner wall of one side of the plastic bag 2, and one end, more specifically, the upper end is disposed on the same line as the inlet end of the plastic bag 2, so that the plastic bag 2 ) is attached to the inner wall of the The first band portion 11 has a first connection portion 12 formed on the other side opposite to one side attached to the inner wall of the plastic bag 2 .

The first connection part 12 is a portion extending vertically from the first band part 11 and is formed to be biased toward one side away from the center of the first band part 11 . The first connection part 12 is disposed closer to the lower end than the upper end of the first band part 11 , and connects between the first band part 11 and the first base part 13 . That is, the distance between the first connection part 12 from the lower end of the first band part 11 is formed to be shorter than the distance between the first connection part 12 from the upper end of the first band part 11 .

The first base part 13 may extend in a vertical direction from the first connection part 12 , and may overlap the first band part 11 and be formed side by side. That is, the first band portion 11 and the first base portion 13 are disposed in parallel with the inner wall of the plastic bag 2 to overlap each other, and are connected to each other by the first connecting portion 12 . At this time, the thickness of the first base part 13 (the length in the x direction in FIG. 2 ) is thicker than that of the first band part 11 , and the thickness may gradually increase as the distance from the first connection part 12 increases. . In addition, as the thickness of the first base part 13 becomes progressively thicker as it goes away from the first connection part 12, the interval between the first base part 13 and the first band part 11 is the first connection part ( 12), it may gradually become narrower as it moves away from it. A first hook part 14 and a first support part 15 protrude from the first base part 13 .

The first hook portion 14 is for coupling with the second zipper strip 20, and includes a first inner hook portion 14a and a first outer hook portion 14b protruding side by side from the first base portion 13. may include. Here, the first inner hook portion 14a refers to a hook portion located on the inner side in relatively close proximity to the first connection portion 12 , and the first outer hook portion 14b refers to the first connection portion 12 . ) may refer to a hook portion relatively spaced apart from the outside. The first inner hook portion 14a and the first outer hook portion 14b are, respectively, the posts 14a' and 14b' extending from the first base part 13, and the ends of the posts 14a' and 14b'. Including the hooks 14a", 14b" bent downward toward the first support portion 15, which will be described later, and the posts 14a' and 14b' have a width (Fig. 2) may be formed in a tapered shape in which the length in the y-direction becomes smaller.

The first support portion 15 maintains the coupling between the first zipper strip 10 and the second zipper strip 20 , and is spaced apart from the first inner hook portion 14a to protrude from the first base portion 13 . can In this case, the first support portion 15 is formed to extend in a straight line from the first connection portion 12 , and may be formed to gradually decrease in width as it goes away from the first base portion 13 . In addition, the first support part 15 may extend vertically from the first connection part 12 so that the first base part 13 may extend to the side of the first support part 15 . As the first support portion 15 extends from the first connection portion 12 , the first inner hook portion 14a and the first outer hook portion 14b are one side of the first support portion 15 , more specifically As such, it is arranged side by side on the upper side of the first support part 15 , and the hooks 14a ″, 14b ″ may protrude toward the first support part 15 . At this time, in the first outer hook portion 14b far from the first support portion 15, the pillar 14b' is refracted in the hook 14b" direction, and the first support portion 15 and the first outer hook portion 14b ), the first inner hook portion 14a located between can be In addition, the distance from the inlet end of the plastic bag 2 to the first support 15 may be formed within 10 mm.

The first zipper strip 10 is coupled to the second zipper strip 20 .

The second zipper strip 20 forms the remaining part of the tamper-evident zipper 1, is attached to the inner wall of the other side of the plastic bag 2 along the width direction, and is combined with the first zipper strip 10. The plastic bag 2 can be sealed. The second zipper strip 20 includes a second band portion 21 , a second connection portion 22 , a second base portion 23 , a second hook portion 24 , and a second support portion 25 . ha ha

The second band part 21 is a band-shaped member extending in one direction, is formed side by side with the first band part 11, is attached to the other inner wall of the plastic bag 2, and is a second base part 23 to be described later. and the second hook part 24 , and the second support part 25 . The second band portion 21 is arranged in parallel with the inner wall of the other side of the plastic bag 2, and one end, more specifically, the upper end is disposed on the same line as the inlet end of the plastic bag 2, so that the plastic bag 2 ) is attached to the inner wall of the The second band portion 21 has a second connection portion 22 formed on the other side opposite to one side attached to the inner wall of the plastic bag 2 .

The second connecting portion 22 is a portion extending vertically from the second band portion 21 , and is formed to be biased toward one side away from the center of the second band portion 21 . The second connection part 22 is disposed closer to the upper end than the lower end of the second band part 21 , and connects between the second band part 21 and the second base part 23 . That is, the interval between the second connecting portion 22 from the upper end of the second band portion 21 is formed shorter than the interval between the second connecting portion 22 from the lower end of the second band portion 21, and the second connecting portion 22 may be located above the first connection part 12 .

The second base part 23 may extend in a vertical direction from the second connection part 22 , and may overlap the first base part 13 and the second band part 21 to be formed side by side. That is, the second band portion 21 and the second base portion 23 are disposed in parallel with the inner wall of the plastic bag 2 to overlap each other, and are connected to each other by the second connection portion 22 . At this time, the second base portion 23 is formed to be thicker than the second band portion 21 , and the thickness may gradually increase as the distance from the second connection portion 22 increases. The thickness of the first base part 13 and the second base part 23 is formed to be thicker than the first band part 11 and the second band part 21, respectively, so that both sides of the plastic bag 2 are gripped and each other Even if force is applied to open the gap between the first zipper strip 10 and the second zipper strip 20 while pulling in the opposite direction, the first base part 13 and the second base part 23 are not deformed, so that the first The coupling between the zipper strip 10 and the second zipper strip 20 may be firmly maintained. When the first base part 13 and the second base part 23 are formed to be thinner than the first band part 11 and the second band part 21, respectively, hold both sides of the plastic bag 2 in opposite directions When pulled to , the first base part 13 and the second base part 23 are twisted and deformed, so that the coupling between the first zipper strip 10 and the second zipper strip 20 may be released. In the present invention, the thickness of the first base part 13 and the second base part 23 is formed to be thicker than the first band part 11 and the second band part 21, so that both sides of the plastic bag 2 are gripped and Deformation of the first base part 13 and the second base part 23 when pulled in opposite directions can be effectively prevented. In addition, as the thickness of the second base part 23 becomes progressively thicker as it goes away from the second connection part 22, the interval between the second base part 23 and the second band part 21 is increased by the second connection part ( 22), it may gradually become narrower as it goes away. A second hook part 24 and a second support part 25 protrude from the second base part 23 .

The second hook portion 24 is for coupling with the first zipper strip 10, and a second inner hook portion 24a and a second outer hook portion 24b protruding side by side from the second base portion 23. Can be hook-coupled with the first hook portion 14, including. Here, the second inner hook part 24a means a hook part located on the inside in relatively close proximity to the second connection part 22 , and the second outer hook part 24b means the second connection part 22 . ) may refer to a hook portion relatively spaced apart from the outside. The second inner hook portion 24a and the second outer hook portion 24b are, respectively, the posts 24a' and 24b' extending from the second base part 23, and the ends of the posts 24a' and 24b'. Including the hooks 24a", 24b" bent downward toward the second support part 25 to be described later, and the pillars 24a', 24b' have a smaller width as they move away from the second base part 23. The branch may be formed in a tapered shape.

The second support part 25 maintains the coupling between the first zipper strip 10 and the second zipper strip 20 , and is spaced apart from the second inner hook part 24a to protrude from the second base part 23 . can At this time, the second support part 25 is formed to extend in a straight line from the second connection part 22 , and may be formed to have a gradually smaller width as it goes away from the second base part 23 . In addition, the second support part 25 may extend vertically from the second connection part 22 so that the second base part 23 may extend to the side of the second support part 25 . As the second support part 25 extends from the second connection part 22, the above-described second inner hook part 24a and the second outer hook part 24b are one side of the second support part 25, more specifically As such, it is arranged side by side under the second support part 25 , and the hooks 24a ″ and 24b ″ may protrude toward the second support part 25 . At this time, in the second outer hook part 24b far from the second support part 25, the post 24b' is refracted in the direction of the hook 24b", and the second support part 25 and the second outer hook part 24b ), the second inner hook portion 24a located between can be Accordingly, the first support portion 15 and the hook 14a" of the first inner hook portion 14a press and fix the post 24b' of the second outer hook portion 24b, and the second support portion 25 and the first zipper strip 10 and the second zipper strip 20 while the hook 24a" of the second inner hook portion 24a presses and fixes the post 14b' of the first outer hook portion 14b. can be combined. At this time, the first inner hook portion 14a and the second inner hook portion 24a have the ends of the posts 14a' and 24a' in close contact with the second base portion 23 and the first base portion 13, respectively. supported, between the first base portion 13 and the second outer hook portion 24b, between the second base portion 23 and the first outer hook portion 14b, and the first base portion 13 and the second inner side Between the hook portion 24a, between the second base portion 23 and the first inner hook portion 14a, and between the pillar 14a' of the first inner hook portion 14a and the second inner hook portion 24a. The pillars 24a' may be spaced apart from each other.

In particular, in a state in which the first zipper strip 10 and the second zipper strip 20 are coupled, the post 14a' of the first inner hook part 14a and the post 24a of the second inner hook part 24a are coupled. ') are spaced apart from each other, and at the same time, the hook 14a" of the first support part 15 and the first inner hook part 14a presses and fixes the column 24b' of the second outer hook part 24b, and , as the hook 24a" of the second support part 25 and the second inner hook part 24a presses and fixes the post 14b' of the first outer hook part 14b, the first zipper strip 10 and the second zipper strip 20 are securely fixed and not arbitrarily opened. That is, the first support portion 15 and the first inner hook portion 14a are compressed with each other, and the second support portion 25 and the second inner hook portion 24a are compressed with each other, so that the first zipper strip 10 and the first zipper strip 10 are compressed with each other. 2 The zipper strip 20 is never separated without being damaged by the pulling force on both sides. In addition, since the posts 14a' of the first inner hook part 14a and the posts 24a' of the second inner hook part 24a are spaced apart from each other, the first zipper strip 10 and the second zipper strip ( 20) are twisted to each other, but they do not separate because there is no support point.

The end of the post 14a' of the first inner hook part 14a is closed while the first support part 15 and the first inner hook part 14a press the post 24b' of the second outer hook part 24b. 2 The second inner hook portion ( Since the end of the post 24a' of 24a) is closely supported on the first base part 13, both vertical and horizontal movement are restricted, so that the first zipper strip 10 and the second zipper strip 20 are connected to each other. Even if it is pulled in opposite directions, the coupling between the first hook part 14 and the second hook part 24 is not loosened and can be firmly maintained. In particular, as described above, the thickness of the first base part 13 and the second base part 23 is gradually increased as the distance from the first connection part 12 and the second connection part 22 is increased. Since the force supporting the outer hook portion 14b and the second outer hook portion 24b is increased, even if a force is applied to the first zipper strip 10 and the second zipper strip 20, the first outer hook portion 14b ) and the second outer hook part 24b, respectively, between the hooks 24a" of the second support part 25 and the second inner hook part 24a, and the first support part 15 and the first inner hook part ( It can be maintained in a fitted state without falling out between the hooks 14a" of 14a). In addition, the distance from the inlet end of the plastic bag 2 to the second support 25 may be formed within 10 mm. As described above, the upper ends of the first band portion 11 and the second band portion 21 are disposed on the same line as the inlet end of the plastic bag 2 , and the first support portion 15 at the inlet end of the plastic bag 2 . Since the distance between the and the second support part 25 is formed to be short within 10 mm, respectively, it is not easy to grip the inlet ends of the plastic bag 2 extended to the upper part of the first support part 15 and the second support part 25. Force cannot be applied intensively to the combined first zipper strip 10 and the second zipper strip 20, so that the coupling between the first hook part 14 and the second hook part 24 is continuously maintained. can be

On the other hand, as described above, between the first base portion 13 and the first band portion 11, between the second base portion 23 and the second band portion 21, respectively, are spaced apart from the first connection portion 12 and As the distance from the second connection part 22 increases, it may gradually become narrower. By spaced apart between the first base part 13 and the first band part 11, and between the second base part 23 and the second band part 21, both sides of the plastic bag 2 are gripped and the opposite direction to each other Even if force is applied to open the gap between the first zipper strip 10 and the second zipper strip 20 while pulling with the Thus, the coupling between the first hook part 14 and the second hook part 24 may be maintained.

The first connection part 12, the first base part 13, the first hook part 14, and the first support part 15, the second connection part 22, the second base part 23, the second It may be formed in a point symmetrical shape with the hook part 24 and the second support part 25 . Here, the point-symmetric figure means a figure that is completely overlapped with the first figure when the figure is rotated by 180° around the reference point. That is, when the first connection part 12, the first base part 13, the first hook part 14, and the first support part 15 are rotated 180 degrees around the reference point, the second connection part 22, the first The second base part 23 , the second hook part 24 , and the second support part 25 are completely superimposed. The first connection part 12 , the first base part 13 , the first hook part 14 , and the first support part 15 are the second connection part 22 , the second base part 23 , and the second hook part (24), and by being formed in a point symmetrical figure with the second support part 25, it is possible to manufacture with a single mold, thereby making it easy to manufacture and reduce costs accordingly.

The tamper-evident zipper bag 3 according to the present invention includes a plastic bag 2 having one side open, and a first zipper strip 10 and a second zipper strip 20 attached to the inside. Including the zipper (1), it is possible to accommodate the contents therein.

The plastic bag 2 is a bag-shaped member with an open side, more specifically, an upper side, and may be made of vinyl. Here, the term “vinyl” refers to a film made of synthetic resin in the sense commonly used in the market, and not only a vinyl resin having a vinyl group, but also a plastic bag used in the market even if it does not have a vinyl group, a vinyl used in a plastic house, etc. It can be a generic term for vinyl zipper bags made of synthetic resin films such as polyethylene film, which is transparent and transmits sunlight. The plastic bag 2 has a closed structure except for the opened upper side, and the tamper-evident zipper 1 is attached to the opened upper side.

The tamper-evident zipper (1) is composed of a first zipper strip (10) and a second zipper strip (20), and the first zipper strip (10) has a first band part (11), a first connection part (12), and a It includes a first base portion 13, a first hook portion 14, and a first support portion 15, and the second zipper strip 20 includes a second band portion 21, a second connection portion 22, and a second It includes a base portion 23 , a second hook portion 24 , and a second support portion 25 . In the first zipper strip 10, the upper end of the first band portion 11 is disposed on the same line as the inlet end of the plastic bag 2, and the first hook portion 14 faces the opened upper side of the plastic bag 2 The first support 15 is attached to the inner wall of one side of the plastic bag 2 so as to face the inside of the plastic bag 2 . In the second zipper strip 20, the upper end of the second band portion 21 is disposed on the same line as the inlet end of the plastic bag 2, and the second support portion 25 faces the opened upper side of the plastic bag 2, and 2 The hook portion 24 is attached to the inner wall of the other side of the plastic bag (2) so as to face the inside of the plastic bag (2).

Meanwhile, the plastic bag 2 may have a notch 2a in the form of a triangular recessed groove on at least one side thereof. Since the notch 2a is formed on one side of the plastic bag 2, it is possible to tear the plastic bag 2 while twisting it based on the notch 2a even if there is no cutting mechanism such as scissors or a knife. Therefore, in the state in which the first zipper strip 10 and the second zipper strip 20 are coupled, the contents accommodated in the plastic bag 2 can be easily taken out, and whether or not the plastic bag 2 is illegally opened can be identified. can In the drawing, two notches 2a are formed on both sides of the plastic bag 2, respectively, and it is shown that the two notches 2a are respectively disposed on the upper and lower portions of the plastic bag 2, but it is not limited to this No, the number and arrangement of the notches 2a may be variously modified. A perforated line 2b may be connected to the notch 2a.

The perforated line 2b is to help the plastic bag 2 to be torn evenly in one direction, and may extend in the width direction of the plastic bag 2 and be connected to the notch 2a. By forming the perforation line 2b in the plastic bag 2, the plastic bag 2 can be more easily torn with a small force, and the contents from being damaged when the plastic bag 2 is torn can be effectively prevented.

Hereinafter, with reference to FIG. 5 , the operations of the tamper-evident zipper 1 and the tamper-evident zipper bag 3 will be described in more detail.

5 is an operational diagram for explaining the operations of the tamper-evident zipper and the tamper-evident zipper bag.

In the unauthorized opening prevention zipper 1 according to the present invention, since the first zipper strip 10 and the second zipper strip 20 are strongly coupled, it is possible to effectively prevent the plastic bag 2 from being opened illegally. In addition, the tamper-evident zipper bag 3 must be cut by twisting and tearing the plastic bag 2 based on the notch 2a formed in the plastic bag 2 or using a cutting tool such as scissors or a knife to cut the plastic bag 2 Since only the opening is possible, it is possible to identify whether the plastic bag 2 is illegally opened.

In the tamper-evident zipper bag 3 of the present invention, the upper ends of the first band portion 11 and the second band portion 21 are disposed on the same line as the inlet end of the plastic bag 2, and at the inlet end of the plastic bag 2 The distance between the first support part 15 and the second support part 25 is formed as short as 10 mm or less, respectively. Therefore, it is not easy to grip the inlet end of the plastic bag 2 extended above the first support part 15 and the second support part 25 , and the first zipper strip 10 and the second zipper strip 20 . When the coupling is forcibly released, as shown in FIG. 5 ( a ), both sides of the plastic bag 2 must be gripped and pulled while spreading to both sides.

However, even if both sides of the plastic bag 2 are gripped and pulled apart from both sides, as shown in FIG. 5(b), the hooks ( 14a") presses the post 24b' of the second outer hook part 24b, and the hook 24a" of the second support part 25 and the second inner hook part 24a is connected to the first outer hook part ( Since the post 14b' of 14b) is pressed, the hook 14a" of the first inner hook portion 14a and the hook 24b" of the second outer hook portion 24b are more closely contacted and the second inner hook The hook 24a" of the portion 24a and the hook 14b" of the first outer hook portion 14b are more closely contacted, so that the coupling can be maintained without being released. In particular, since the first base portion 13 and the first band portion 11 and between the second base portion 23 and the second band portion 21 are spaced apart, both sides of the plastic bag 2 are gripped and Even if force is applied to widen the gap between the first zipper strip 10 and the second zipper strip 20 while pulling in opposite directions, the force is directly applied to the first hook part 14 and the second hook part 24 . Since it does not act, the coupling between the first hook part 14 and the second hook part 24 may be maintained. In addition, since the thickness of the first base part 13 and the second base part 23 is formed to be thicker than the first band part 11 and the second band part 21, respectively, both sides of the plastic bag 2 are gripped and It does not deform even when a force is applied while spreading it to both sides and firmly supports the first hook part 14 and the second hook part 24 so that the first outer hook part 14b and the second outer hook part 24b are respectively separated from each other. , between the second support part 25 and the second inner hook part 24a, and between the first support part 15 and the first inner hook part 14a, without falling out, may be maintained in a fitted state. That is, in the tamper-evident zipper 1 of the present invention, once the first zipper strip 10 and the second zipper strip 20 are coupled, the coupling cannot be released again, and thereby, the plastic bag ( 2) Since the plastic bag 2 has to be cut in order to open it again, it is possible to identify whether the plastic bag 2 has been opened illegally.

Hereinafter, with reference to FIG. 6, an unauthorized opening prevention zipper bag 3 according to another embodiment of the present invention will be described in detail.

6 is a longitudinal cross-sectional view showing a zipper bag for preventing unauthorized opening according to another embodiment of the present invention.

In the tamper-evident zipper bag 3 according to another embodiment of the present invention, the inlet end of the other side wall of the plastic bag 2 is longer than the inlet end of the one side wall. The tamper-evident zipper bag 3 according to another embodiment of the present invention is substantially the same as the above-described embodiment, except that the inlet end of the other side wall of the plastic bag 2 is formed longer than the inlet end of the one side wall. Therefore, it is mainly described, but unless otherwise noted, the description of the remaining components is replaced with the above.

The plastic bag 2 may be formed so that the inlet end of the other side wall to which the second zipper strip 20 is attached is longer than the inlet end of the one side wall to which the first zipper strip 10 is attached. Accordingly, the end of the first band portion 11 is disposed on the same line as the inlet end of one side wall of the plastic bag 2 and is attached to the inner wall of one side of the plastic bag 2 as a whole, and the second band portion 21 has the end It is spaced apart from the inlet end of the other side wall of the plastic bag (2) and is attached to the inner wall of the other side of the plastic bag (2) as a whole. Since the inlet end of the other side wall of the plastic bag 2 is formed longer than the inlet end of the one side wall, only the inlet end of the other side wall of the plastic bag 2 extended above the second support part 25 can be gripped and the first support part ( 15) The entrance end of one side wall of the plastic bag 2 extending upward is not easy to grip, so it is impossible to apply intensive force to the first zipper strip 10 and the second zipper strip 20 coupled to each other, Due to this, the coupling between the first hook part 14 and the second hook part 24 may be continuously maintained. However, the inlet end of the other side wall of the plastic bag 2 to which the second zipper strip 20 is attached is longer than the inlet end of the one side wall of the plastic bag 2 to which the first zipper strip 10 is attached. It is not limited, and for example, the inlet end of one side wall of the plastic bag 2 to which the first zipper strip 10 is attached is the other side wall of the plastic bag 2 to which the second zipper strip 20 is attached. It may be formed longer than the inlet end. When the inlet end of one side wall of the plastic bag 2 to which the first zipper strip 10 is attached is longer than the inlet end of the other side wall of the plastic bag 2 to which the second zipper strip 20 is attached, the first 2 The band portion 21 has an end disposed on the same line as the inlet end of the other side wall of the plastic bag 2 and is entirely attached to the inner wall of the other side of the plastic bag 2, and the first band portion 11 has an end disposed on the plastic bag ( It may be spaced apart from the inlet end of one side wall of 2) and attached to the inner wall of one side of the plastic bag 2 as a whole.

Although embodiments of the present invention have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can realize that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

[Explanation of code]

1: Tamper-resistant zipper 2: Plastic bag

2a: notch 2b: perforation

3: Zipper bag to prevent unauthorized opening

10: first zipper strip 11: first band part

12: first connection part 13: first base part

14: first hook portion 14a: first inner hook portion

14b: first outer hook portion 14a', 14b': pillar

14a", 14b": hook 15: first support

20: second zipper strip 21: second band portion

22: second connection part 23: second base part

24: second hook portion 24a: second inner hook portion

24b: second outer hook portion 24a', 24b': pillar

24a", 24b": hook 25: second support

The tamper-evident zipper according to the present invention has high industrial applicability because it can effectively prevent the plastic bag from being opened illegally due to a strong bond.

Claims (18)

1. A first band portion attached to the inner wall of one side of the plastic bag,

   a first connection part extending from the first band part;

   a first base portion extending from the first connection portion and overlapping with the first band portion and formed side by side;

   a first hook portion including a first inner hook portion and a first outer hook portion protruding side by side from the first base portion, and

   a first zipper strip spaced apart from the first inner hook part and including a first support part protruding from the first base part; and

   a second band portion formed side by side with the first band portion and attached to the other inner wall of the plastic bag;

   a second connection part extending from the second band part;

   a second base part extending from the second connection part and overlapping the first base part and formed side by side;

   a second hook portion including a second inner hook portion and a second outer hook portion protruding side by side from the second base portion, the second hook portion being hook-coupled to the first hook portion, and

   A second zipper strip spaced apart from the second inner hook portion and including a second support portion protruding from the second base, and coupled to the first zipper strip to seal the plastic bag,

   The first connection part and the second connection part are formed to be biased toward one side away from the center of the first band part and the second band part, respectively,

   The first support part and the second support part are formed to extend in a straight line from the first connection part and the second connection part,

   The first hook part and the second hook part may include a column extending from the first base part and the second base part, respectively, and hooks bent toward the first support part and the second support part at the end of the column, respectively. including,

   The first support portion and the first inner hook portion press the column of the second outer hook portion,

   The second support portion and the second inner hook portion press the column of the first outer hook portion,

   The first inner hook portion and the second inner hook portion are tamper-evident zippers formed with pillars spaced apart from each other.
2. According to claim 1,

   The first base part and the second base part are respectively formed thicker than the first band part and the second band part.
3. According to claim 1,

   The first base portion and the second base portion, respectively, become thicker as the distance from the first connection portion and the second connection portion increases.
4. According to claim 1,

   The gap between the first base part and the first band part and the gap between the second base part and the second band part are gradually narrowed as the distance from the first connection part and the second connection part increases. .
5. According to claim 1,

   The pillar is an unauthorized tampering prevention zipper formed in a tapered shape that becomes smaller as the distance from the first base portion or the second base portion increases.
6. According to claim 1,

   The first outer hook portion and the second outer hook portion, respectively, the tamper-resistant zipper in which the pillar is bent in the direction of the hook.
7. 7. The method of claim 6,

   The first inner hook portion and the second inner hook portion are each formed in a tapered shape in which the width of the pillar becomes smaller as the distance from the first base portion or the second base portion increases, and the opposite side of the hook is inclined. Tamper-resistant zippers formed.
8. According to claim 1,

   The first connection part, the first base part, the first hook part, and the first support part are negatively formed in a point symmetrical shape with the second connection part, the second base part, the second hook part, and the second support part. Unopened zipper.
9. plastic bag;

   A first band portion attached to the inner wall of one side of the plastic bag,

   a first connection part extending from the first band part;

   a first base portion extending from the first connection portion and overlapping with the first band portion and formed side by side;

   a first hook portion including a first inner hook portion and a first outer hook portion protruding side by side from the first base portion, and

   a first zipper strip spaced apart from the first inner hook part and including a first support part protruding from the first base part; and

   a second band portion formed side by side with the first band portion and attached to the other inner wall of the plastic bag;

   a second connection part extending from the second band part;

   a second base part extending from the second connection part and overlapping the first base part and formed side by side;

   a second hook portion including a second inner hook portion and a second outer hook portion protruding side by side from the second base portion, the second hook portion being hook-coupled to the first hook portion, and

   A second zipper strip spaced apart from the second inner hook portion and including a second support portion protruding from the second base, and coupled to the first zipper strip to seal the plastic bag,

   The first connection part and the second connection part are formed to be biased toward one side away from the center of the first band part and the second band part, respectively,

   The first support part and the second support part are formed to extend in a straight line from the first connection part and the second connection part,

   The first hook part and the second hook part may include a column extending from the first base part and the second base part, respectively, and hooks bent toward the first support part and the second support part at the end of the column, respectively. including,

   The first support portion and the first inner hook portion press the column of the second outer hook portion,

   The second support portion and the second inner hook portion press the column of the first outer hook portion,

   The first inner hook portion and the second inner hook portion include an unauthorized tampering prevention zipper bag formed with pillars spaced apart from each other.
10. 10. The method of claim 9,

    The first base part and the second base part are respectively formed thicker than the first band part and the second band part.
11. 10. The method of claim 9,

    The tamper-evident zipper bag is gradually thicker as the first base part and the second base part move away from the first connection part and the second connection part, respectively.
12. 10. The method of claim 9,

    The gap between the first base part and the first band part and the gap between the second base part and the second band part are gradually narrowed as the distance from the first connection part and the second connection part increases. .
13. 10. The method of claim 9,

    The first connection part, the first base part, the first hook part, and the first support part are negatively formed in a point symmetrical shape with the second connection part, the second base part, the second hook part, and the second support part. Open ziplock bag.
14. 10. The method of claim 9,

    A tamper-evident zipper bag formed within 10 mm of a distance from the inlet end of the plastic bag to the first support part or the second support part.
15. 15. The method of claim 14,

    Each of the first band portion and the second band portion has one end disposed on the same line as the inlet end of the plastic bag, and the tamper-evident zipper bag is attached to the inner wall of the plastic bag as a whole.
16. 15. The method of claim 14,

    The plastic bag is formed so that the inlet end of the other side wall is longer than the inlet end of one side wall,

    The end of the first band portion is disposed on the same line as the inlet end of one side wall of the plastic bag and is attached to the inner wall of the plastic bag as a whole,

    The second band end portion is spaced apart from the inlet end of the other side wall of the plastic bag and is attached to the inner wall of the plastic bag as a whole to prevent unauthorized opening of the zipper bag.
17. 15. The method of claim 14,

    The plastic bag is a tamper-resistant zipper bag in which a notch is formed on at least one side.
18. 18. The method of claim 17,

    The tamper-evident zipper bag further comprising a perforation line connected to the notch and extending in the width direction of the plastic bag.

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