JP2003063540A - Closing means for opening portion of bag body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a closing means for an opening portion of a bag, which is capable of securing adhesive strength by surface bonding between header portion thereof, at the time of closing the bag by pinching the opening portion thereof with its header portions, and which allows even a bag having line meshes such as a meshed bag to be firmly bonded to surface state header portions. SOLUTION: The closing means is for an opening portion of a bag, the opening portion which comprises a header portion 2 which is so arranged that at least two or more of header pieces 2a, 2b having a width wider than that of a bag body 1 pinch an opening portion 1a of the bag body 1 so as to seal it, and is to apply an adhesive 3 at an area which is on the inner surface of the header piece 2a in the direction of an end thereof in the direction of the width thereof, and which does not come in contact with the opening portion 1a of the bag body 1 when the opening portion 1a is pinched, so that is becomes possible to close the opening portion 1a of the bag body 1 by bonding the headers 2a, 2b by way of the bonding member 3 when the opening portion is pinched by using the headers 2a, 2b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closing tool for closing an opening of a bag body, and more specifically, the contents are sealed from the opening of the bag body, for example, the opening of a mesh bag. In this case, the present invention relates to a closing tool for the opening of the bag for closing the opening and enclosing the contents.

[0002]

2. Description of the Related Art Conventionally, in order to attach a header to an opening of a net bag made of a synthetic resin and seal the contents in the bag, it is often used to close the opening with the header. In this case, for example, a sheet-shaped header part made of paper or synthetic resin is folded in two, sandwiched in the opening of the bag, and the opening is closed with a stapler or the like.
In addition, as shown in Japanese Utility Model Publication No. 1-1243, the header is sandwiched on one side of the bag body by heat welding to the opening of the net bag, and the other side of the bag is sandwiched by the plastic pieces on both sides and heat welded. There is a bag to do. This is intended to close the bag body by adhering the header portion and the plastic piece on the other surface of the bag body. Alternatively, JP-A 2000-6280
As shown in No. 9, in some cases, a hot-melt adhesive is formed in a spot shape at a height such that the parts between the sheets can be heat-bonded so as to be bonded through the meshes of the net bag, and then heat-bonded. .

[0003]

First of all, the one in which the header portion is folded in two, and the opening portion of the bag is sandwiched and fixed by a stapler or the like has been widely used, but the stapler needle is made of metal or the like. Therefore, it is necessary to perform the closing work of the bag with care, and also to take out the bag inside the bag for safety. For this reason, a synthetic resin header is heat-sealed in advance on both sides of the bag opening of the synthetic resin net bag, and an adhesive tape is arranged in advance on the back side of one side of the header. In some cases, the bag is closed by bonding. However, in this case, the heat welding between the header portion and the net bag has a very small contact area, and reliable heat welding cannot be performed, and the header portion is peeled off.

In addition to this, a long header portion is heat-welded only to one surface of the bag body of the net bag, the header portion is bent, and the tip of the header portion is adhered to the outer surface of the net bag with an adhesive tape or the like. There are some cases in which the bag body is closed by doing so, but like the above, the heat welding to the net bag of the header part cannot be said to be reliable, and the net tape is also used to bond the adhesive tape at the tip of the header part and the net bag. There was very little contact with the bag, and it was easy to peel off. Therefore, in order to eliminate these drawbacks, as shown in Japanese Utility Model Publication No. 1-1243, a header part is sandwiched on one surface of a bag body and heat-welded to an opening of the net bag, and a plastic piece is formed on the other surface of the bag body. There is a bag body that is heat-welded by sandwiching it on both sides, but since the header part on one side of the bag body is adhered to the plastic piece on the other side of the bag body, the header part and the plastic piece on the side surface of the other side of the bag body Although the adhesive strength between the two is increased, even if the header part is heat-welded to the opening of the net bag with the plastic piece sandwiched between them, the contact area of each of the net bags on both sides is extremely small and reliable. It could not be heat welded.

Therefore, even if the net bag is sandwiched between the header portion and the plastic piece on one surface of the bag body and heat-sealed, both of them have a small contact area between the net bags and are easily peeled off, and the other surface of the bag body is also easily peeled off. Even if the nets were heat-welded by sandwiching both sides with plastic pieces, the contact area between each plastic piece and the net was small, and the nets were easily peeled off. On the other hand, JP-A-11-310246
As shown in No. 4, there are some which increase the contact surface by increasing the contact surface by flattening the net ground portion, but for example, when flattening the net ground portion, the flatter the contact On the other hand, the net part becomes thin, but the strength of the net bag itself becomes low. Further, if the degree of flatness is reduced, the contact surface is almost the same as in the conventional thermocompression bonding, and, for example, the contact portion between the header portion and the net ground portion remains small. In particular, when the header portion and the net ground portion are thermocompression bonded, the header portion is interposed and the heat conduction cannot be achieved well.
Due to the difference in melting temperature between the header portion and the net, there is a possibility that a clean bag cannot be formed.

In addition to this, a spot-shaped hot-melt adhesive having a height of a certain level or more is provided in order to enable bonding through the meshes of a net bag as shown in Japanese Patent Laid-Open No. 2000-62809. There is also one that sandwiches a net bag between them and heats and melts them to bond them, but this requires the melting and bonding with a heat source and has a major drawback that the bag cannot be simply closed. Further, since the adhesive is positioned between the meshes of the net, there is a large amount of the adhesive member between the meshes, and a gap is created when the adhesive melts, and a gap is created between the meshes when the adhesive is cooled and solidified. As a result, the area of the contact adhesion portion between the header portion and the net portion becomes extremely small and the adhesion strength becomes low. In other words, the surface of the so-called header is bonded to the mesh line of the net, and the adhesive strength is low, and the adhesive strength cannot be generated when the surface is in contact with a flat surface. As described above, there is a need for an invention of a closure device for an opening portion of a bag body that can easily close the bag body when the contents are simply enclosed in the bag body and the opening portion is closed by a header portion although it is a net bag. It is rare.

[0007]

According to a first aspect of the present invention, there is provided a closing tool for an opening portion of a bag body, which comprises a header portion that closes the opening portion of the bag body with at least two header pieces. , The width of the header piece is wider than that of the bag body, and the header piece is in contact with the inner surface of the header piece in the width direction end direction when at least the opening portion of the bag body is sandwiched. An adhesive member is applied to a portion not to be held, the opening of the bag is sandwiched between the header pieces, and the header pieces are adhered by the adhesive member so that the opening of the bag can be closed. A closure, which allows a reliable closure. In this case, when it is used for the mesh bag like the invention according to claim 2, the header pieces are bonded together separately from the net portion, which is different from the normal mesh portion, and the reliable bonding is achieved. It is possible. Alternatively, the same applies to the case where the mesh bag is a net bag as shown in the invention according to claim 3, and the mesh bag has a monofilament-shaped filament as shown in the invention according to claim 4. The same applies to a bag body having a stretchable mesh that is integrated by intersecting.

Further, as in the invention according to claim 5, even if the mesh bag is a bag made of non-woven mesh or woven mesh, the bag opening can be surely closed. In addition, claim 6
As shown in the invention according to the above, it is in the end direction in the width direction of the inner surface of the header piece, and when the opening of the bag is sandwiched, the opening comes into contact with the opening of the bag from a portion that does not contact the opening. The adhesive member is applied even to the part, and the header piece is adhered by the adhesive member by sandwiching the opening of the bag body with each header piece, and a part of the bag body is also adhered together, and the bag body opening is formed. The problem can also be solved by a closing tool for the opening of the bag body that can be closed. Alternatively, as shown in the invention according to claim 7, the header part may be a closing tool for the opening part of the bag body in which each header piece is formed by bending the sheet-like material. In these cases, as shown in the invention according to claim 8, it may be a closing tool for the opening of the bag body in which at least one of the header pieces and the bag body are adhered by an adhesive member.

Instead of this, a closing tool for the opening of the bag body in which at least one of the header pieces and the bag body are fused as shown in the invention according to claim 9 may be used. In such a case, claim 1
As described in the invention according to No. 0, a closing tool for an opening of a bag body, which is an inner surface of another header piece and has an adhesive member applied to a portion which is in contact with the surface of the bag body when the header pieces are sandwiched therebetween. Even in this case, it is possible to more reliably prevent the header portion from coming off from the bag body. It is to be noted that, as in the invention according to claim 11, the adhesive members are respectively provided on both sides in the longitudinal direction of the inner surface of the header piece and which are not in contact with at least the opening of the bag body when sandwiching the opening. The header pieces can be adhered to each other by the adhesive members that are applied to the respective surfaces of the two overlapping header pieces, by applying the Can be closed. In the above case, if the adhesive member uses hot melt as in the invention according to claim 12, it can be more easily manufactured.

[0010]

1 is a view showing an embodiment of a bag body according to the present invention. Reference numeral 1 denotes a bag, which is a mesh bag 1 made of a so-called net bag, for example, a stretchable mesh 1 formed by intersecting and integrating monofilament-shaped filaments.
It may be a bag having b or a bag having a non-woven fabric shape or a woven fabric shape and having a mesh 1b configuration. Alternatively, it may be a non-woven mesh or a woven mesh and have a mesh structure 1b. Further, for example, the bag body 1 made of cloth or paper is not limited to the bag body 1 made of synthetic resin, and the material thereof is not limited. Therefore, in addition to the mesh shape, the ordinary bag body 1 may be used, and the material and shape thereof are not particularly limited.

At least the bag 1 having the opening 1a, which is required to contain the contents, and which can be closed by using the header 2 Good. Here, the mesh is not limited to the bag 1 that is roughly knitted at regular or indefinite intervals, but is not limited as long as the hole-like shape that is the mesh 1b can be visually perceived to allow ventilation and water passage. The eye-shaped portion 1b having an arbitrary shape and size is not limited to the one having the eye 1b regularly.
As long as it has For example, a linear or rod-shaped object, a three-dimensional object, a planar object, or a member of an arbitrary shape such as a twisted or bundled product of a plurality of these is crossed to have a fixed or unfixed appearance mesh 1b. Any shape may be used as long as it has a substantially hole-like shape and allows ventilation and water passage. Therefore, the crossing is not limited to double crossing, and may be multiple crossing, and may not be woven, but may be only overlapping or may be arbitrarily crossing.

The intersecting state in this case is not limited to a constant interval, and may be intersecting at any different interval. Further, this crossing is not limited to the overlapped shape, but is also included in an integrally molded article such as a sheet-like article having a large number of hole-like shapes and having holes as in the external appearance mesh 1b, as well as a linear strip. The objects may be intersected with each other and fused together, and the filaments may be integrated so that the boundaries between the filamentous objects are lost. Therefore, the mesh-like bag 1 having the mesh-like shape 1b, that is, the bag-like appearance is all included in the mesh-like bag 1. The opening 1a of the bag 1 has two header pieces 2a, 2
b, in the upper direction of both header pieces 2a, 2b, the header pieces 2a, 2b are bonded or fused to form the header portion 2, and the header portion 2a, 2b is formed in the lower direction, that is, the header piece 2a, 2b The header 1 is sandwiched between the header pieces 2a and 2b so that the opening 1a of the bag 1 is overlapped with the side portion in the direction opposite to the side where the two are bonded or fused to each other. 1a is closed.

The header portion 2 is formed by adhering or fusing the header pieces 2a and 2b, which are separate members, to each other on one longitudinal side, that is, at a portion in the opposite direction in contact with the bag body 1. However, the present invention is not limited to this, for example, the header portion 2 is folded in two, and the respective folded piece portions are used as header pieces 2a and 2b. The opening 1a may be closed. Alternatively, the different header pieces 2a and 2b may be adhered or fused at arbitrary places. An adhesive member 3 is applied to the inner surface of the header portion 2 composed of such header pieces 2a and 2b and in the end direction in the longitudinal direction. Here, the end portion direction refers to the end portion and a portion in the vicinity thereof, and means a general end portion direction of the header piece. Therefore, by stacking the header pieces 2a and 2b on top of each other and sandwiching the opening 1a of the bag body 1, the adhesive member 3 of the one header piece 2a is bonded to the other header piece 2b.
It is possible to close the opening 1a of the bag body 1 sandwiched by b.

In this case, the length in the longitudinal direction of the header pieces 2a, 2b, that is, the width, is wider than the width of the opening 1a of the bag body 1. That is, when the opening 1a of the bag body 1 is sandwiched by the two header pieces 2a and 2b, the header portion 2 has a portion in which the bag body 1 does not come into contact with the portion in the width direction. By coating the adhesive member 3 on the header 1, the header pieces 2a and 2b can be directly bonded to each other at a portion other than the mesh 1b of the bag body 1. In this case, the adhesion portion of the adhesive member 3 on the header piece 2a may be an arbitrary portion in the longitudinal direction of the header piece 2a, that is, the end portion in the width direction, and it is not always required to be a fixed portion or the adhesion portion. The number is not limited. Further, although the present embodiment shows the adhesive member 3 applied to both ends of the header piece 2a, the present invention is not limited to this, and the adhesive member 3 may be applied only to one end.

For example, in the case where the application range of the adhesive member 3 is widened or the width of the opening 1a of the bag body 1 is narrow, one end portion of the header piece 2a may be applied without applying the adhesive member 3 to both end portions thereof. Even if the adhesive member 3 is applied only to the headers 2, the header pieces 2a and 2b can be sufficiently bonded, and the opening 1a can be closed. Further, the adhesive member 3 is not limited to being applied to only one header piece 2a, and the adhesive member 3 may be applied to the other header piece 2b to be sandwiched. It should be noted that one header piece 2a of the header portion 2 shown in this figure is bonded to the bag body 1 on one surface around the opening of the opening 1a of the bag body 1, that is, at the end side 21 of the header piece 2a. This makes it possible to prevent the bag 1 and the header portion 2 from being separated from each other. In addition, regarding this bonding portion, it is not always necessary to bond at the edge portion 21 portion, and the header piece and the side surface of the bag body are bonded at an arbitrary position so that the header portion 2 cannot be separated from the bag body. It may be. In these cases, the one header piece 2a and the bag body 1 may not be separable by, for example, heat fusion or high frequency fusion in addition to the adhesion by the adhesive member 3.

In the case of closing the opening 1a of the bag 1 by adhering or fusing the two header pieces 2a, 2b, which are separated into two, with the opening 1a of the bag 1 sandwiched therebetween. The two header pieces 2a and 2b may be adhered or fused to the respective surfaces of the bag body 1. For example, the header pieces 2a, 2b may be preliminarily adhered or fused to the bag body 1 at the end portions 21, 21.
Alternatively, it may be adhered or fused at a position other than the end portions 21, 21. This is because it is possible to prevent the header pieces 2a and 2b from being separated from the bag body 1. Of course, only one header piece 2a is bonded or fused to the bag body 1, the other header piece 2b is not directly bonded or fused to the bag body 1, but the header pieces 2a and 2b are bonded or fused to each other. As a result, the separation from the bag body 1 may be prevented.

As described above, it is possible to close the opening 1a by closing the opening 1a of the bag 1 with the header pieces 2a, 2b and adhering the header pieces 2a, 2b to each other with the adhesive member 3. The adhesive member 3 applied to the end of the header piece 2a is not limited to the one that contacts the other header piece 2b and does not necessarily contact the bag body 1.
When the bag body 1 is sandwiched between a and 2b, the adhesive member 3 may extend to a position where the bag body 1 is caught. This enables bonding in a wider range. FIG. 2 shows that the other header piece 2b shown in FIG.
It is a figure which shows the state which closed this opening part 1a on both sides of the a part. By adhering the header pieces 2a, 2b to each other in this manner, the header portion 2 allows the opening 1 of the bag 1 to be
A is covered, the header pieces 2a, 2b are not separated from each other, and the header body 2 is not separated from the bag body 1, so that the contents in the bag body can be packed.

When the header pieces 2a and 2b are adhered to each other by the adhesive member 3, the bag 1 can be opened by peeling off the adhesion. FIG. 3 shows another embodiment, in which the header portion 2 made of one sheet-like material is folded in two to form respective header pieces 2a and 2b. Adhesive members 3 are applied to both ends of the one header piece 2a, and when the header piece 2a sandwiches the opening of the bag body 1, the edge portion 21 is a portion that comes into contact with the surface of the bag body. The adhesive member 3 is also applied to the periphery. On the other hand, the adhesive member 3 is applied to both ends of the other header piece 2b, and the adhesive member 3 is applied to the periphery of the end portion 21 of the header piece 2b located in the direction of covering the bag 1. There is.

Therefore, when the other header piece 2b is bent at its folded portion and overlapped with the header piece 2a to sandwich the opening 1a of the bag body 1, the header pieces 2a are bonded by the adhesive members 3 at the both ends. 2b are adhered to each other, and the edge portions 2 of the header pieces 2a and 2b are attached.
Header pieces 2a, 2
b is adhered to the surface of the bag body 1 near the opening 1a.
The tightness of the can be improved. In this case, the bag body 1 has a mesh structure, and the adhesion between the header pieces 2a and 2b and the bag body 1 is weaker than the adhesive strength between the header pieces 2a and 2b, but the header pieces 2a and 2b and the bag body 1 respectively. 1 By bonding with each surface, the overall bonding strength is improved, and at the same time, the bag body 1 can be prevented from falling out from between the header pieces 2a and 2b. Other than this, for example, the header piece 2a may be previously fused with the surface of the bag body 1 and the other header piece 2b may be coated with the adhesive member 3.

In this way, the header piece 2a is originally
Is adhered to the other surface of the bag body 1, and therefore the header portion 2a and 2b are adhered to each other to control the adhesion position of the header portion 2 to the bag body 1 and the adhesive strength is not so strong. In both cases, the header portion 2 is not separated from the bag body 1, and the opening 1a of the bag body 1 can be reliably closed.
With the above configuration, when the bag body 1 that has been closed once is reopened, the header pieces 2a and 2b can be easily peeled off from the portion having a slightly weaker adhesive strength.
The adhesive member 3 according to the present invention is not limited to a natural adhesive, and may be a synthetic adhesive. Not only thermoplastic but also thermosetting adhesive is a pressure-sensitive adhesive. Good.
Alternatively, the adhesive is not limited to the adhesive, and an adhesive having an adhesive property is also included in the adhesive member 3 in the present invention. Therefore, the adhesive member 3 in the present invention corresponds to the adhesive member 3 as long as it can adhere or stick at least one member to another member.

For example, an adhesive such as a hot melt or a polyurethane resin adhesive may be used as well as an adhesive used for an adhesive tape or the like. Alternatively, for example, a two-liquid adhesive member 3 may be applied to one header piece 2a with a main agent and the other header piece 2b with a primary agent such as a curing agent or an accelerator, and the header pieces 2a and 2b may be overlapped. When they are combined, they may be mixed to exert an adhesive effect. In addition, one of the two main liquids, such as an acrylic resin two-liquid main agent type, may be applied to each of the header pieces 2a and 2b. Alternatively, it is of course possible to use a tape or the like in which the adhesive member 3 is permeated or coated, an elastic adhesive tape, or the like.

FIG. 4 is a diagram showing a state of another embodiment,
With the opening 1a of the bag 1 closed, the vicinity of the opening 1a is bent, and the header 1 2a and 2b sandwich the bent portion 1c to close the bag 1 with the opening 1a. An example of the closing device of FIG. With the opening 1a of the bag body 1 closed, the front and back surfaces can be overlapped and folded to make a simple closure, but this portion is sandwiched between the header pieces 2a and 2b. This header piece 2
Since the adhesive members 3 are applied to both ends in the width direction of a and 2b, the header pieces 2a and 2b can be face-bonded to each other to sandwich and hold the bent portion 1c of the bag body 1. Therefore, the opening 1a of the bag 1 can be surely closed. In the figure, one sheet-like material 2 is bent or bent to form two header pieces 2a and 2b, and the bag 1 can be closed by bending at the folds.

In this case, the edge portion 2 of one header piece 2a
By fusing or adhering one portion to the bag body 1 in advance, the header portion 2 can be positioned, the separation between the bag body 1 and the header piece can be prevented, and the bag body can be reliably closed. . In addition, the edge portion 21 of the other header piece 2b
When the adhesive member 3 is also applied to the portion, the other header piece 2b can be attached to the bag body 1 in addition to the one header piece 2a, so that the closure can be closed more reliably. You can Alternatively, both end portions 2 of both header pieces 2a, 2b
The adhesive member 3 is applied to the parts 1 and 21 and the folded part 1c of the folded bag 1 is attached to the header pieces 2
When sandwiching between a and 2b and adhering, the header piece 2a,
It is also possible to bond the bag body 1 to the bag body 1 also at both end portions 21 and 21 of the 2b, and to firmly bond the bag body 1 and the header pieces 2a and 2b.

The opening 1a of the bag 1 is closed and bent to form a bent portion 1c, and then the header pieces 2a, 2
When the header pieces 2a and 2b are adhered to each other by sandwiching them by b to close the bag body, the bag body should be closed with the surfaces of the bag body overlapping from the folded portion 1c to the opening portion 1a. When re-opening, the bent portion 1c of the bag body 1 is stretched by, for example, pinching the end of the opening portion 1a and separating it from the body of the bag body 1,
The adhesion between the header pieces 2a and 2b can be released. In addition, the configuration described above has two header pieces 2a and 2b, and the vicinity of the opening 1a of the bag body 1 or the bent portion 1c of the bag body is sandwiched between the two header pieces 2a and 2b, and The header pieces 2a, 2b are adhered to each other by an adhesive member 3 applied to the end portions of the header pieces 2a, 2b to close them, but in addition to this, for example, three header pieces 2a, 2b, 2c are provided. 2c are overlapped and adhered. For example, two headers 2a, 2b, 2c are sandwiched between the respective header pieces 2a, 2b, 2c with the vicinity of the opening 1a or the bent portion 1c sandwiched therebetween, for example, two headers 1, 1. May be closed.

Alternatively, the openings 1a, 1a of the two bags 1, 1 are superposed and sandwiched between the two header pieces 2a, 2b, and the respective header pieces 2a, 2b and the bags 1, 1 contact each other. The bag 1 is pre-fused at an arbitrary portion, for example, the edge portions 21 and 21 of the header pieces 2a and 2b, and the two bag bodies 1 and 1 are sandwiched by the header pieces 2a and 2b in a stacked state. Alternatively, the header pieces 2a and 2b may be adhered to each other by an adhesive member 3 applied to the end portions of the header pieces 2a and 2b in the longitudinal direction or in the vicinity thereof to close the bag body 1. The header 2 according to the present invention is not limited to a resin sheet or film, and may be, for example, a mesh header 2.
Alternatively, paper or the like may be used, and the thickness and the like are arbitrary. That is, it may be made of any material depending on the material of the bag body 1 used, the contents to be enclosed, the condition in which the bag body is placed, and the like.

FIG. 5 is a diagram showing another embodiment of the present invention. Header pieces 2a, 2 that constitute the header portion 2
The b is bonded at one longitudinal end thereof to form the header portion 2. The other end portion 21 facing this one end portion
The adhesive member 3 is applied in a strip shape in the longitudinal direction, that is, the width direction, on the inner surface of each of the header pieces 2a and 2b. In this case, the width of the bag 1 for closing the opening 1a and the width of the header pieces 2a, 2b are the same as the width of the header piece 2
The widths of a and 2b are longer, that is, they are so-called wide. Therefore, the above-mentioned strip-shaped adhesive member 3
When the opening 1a of the bag body 1 is located at the center of the header pieces 2a, 2b in the width direction, the area to be adhered to is adhered to a portion where the opening 1a of the bag body 1 contacts and a portion which does not contact. The member 3 is applied. That is, in this figure, the adhesive member 3 is applied even to the vicinity of the ends in the width direction of the header pieces 2a, 2b, and the opening 1a of the bag body 1 is contacted with the opening 1a and beyond the both ends of the opening. Although the adhesive member 3 is applied even to a portion where there is no portion, there are some areas where the adhesive member 3 is not applied at both end portions.

Further, the width of the band-shaped coating portion of the adhesive 3 that is, the length in the lateral direction is not so long, and the narrow state is shown. This is at least the header piece 2
The header pieces 2a, 2b are oriented toward both ends of the a, 2b.
They are surface-bonded to each other, and the header pieces 2a and 2b and the bag body 1 are bonded to each other at the central portions of the header pieces 2a and 2b. As a result, first, the header pieces 2a, 2b
The two members are surface-bonded to each other in the direction of both ends thereof, and the adhesive strength can be maintained, so that the bag body 1 can be closed, and in addition to this, the header pieces 2a and 2b and the bag body 1 are bonded. Since the header portion 2 is firmly adhered by adhering the header pieces 2a, 2b to each other, the adhesion between the header piece 2a, 2b and the bag body 1 sandwiched therebetween is an adhesion between the surface and the line, The adhesion strength can be increased, and the adhesion between the header portion 2 and the bag body 1 as a whole becomes stronger.

Further, since the shape of the header portion 2 is such that the adhesive member 3 adheres in series and has a lot of surface-adhered portions, the header portion is adhered even if it is adhered to, for example, a net bag at its central portion. It becomes difficult to lose the shape of 2,
It is possible to provide the header section 2 having a good appearance. At the same time, when the bag body 1 is closed, it can be easily closed by sandwiching the opening 1a of the bag body 1 with the header pieces 2a, 2b of the main header portion 2, which is extremely convenient. Further, since the adhesive member 3 may be applied near the one end 21 of the inner surface of the header pieces 2a, 2b, the header section 2 can be manufactured very easily and at low cost. The application position of the band-shaped adhesive member 3 shown in this figure is not limited to this state, and may be applied in a wider band-like shape, or even to both end portions of the header pieces 2a and 2b. The adhesive member 3 may be applied in a meandering shape as well as in a linear shape.

These may be arbitrarily set as needed. When at least the opening 1a of the bag body 1 is sandwiched by the header pieces 2a and 2b, the adhesive member 3 is applied even to a portion that does not contact the opening 1a, and the header pieces 2a and 2b are attached to each other by this portion. It suffices if the two surfaces are bonded together. In addition, when the header pieces 2a, 2b and the bag body 1 can also be bonded together, the bonding strength is further increased. Therefore, as in the case of a conventional net bag or the like, since the surface of the header portion 2 and the wire of the net are inevitably contacted with each other, the adhesive strength is extremely low. It is possible to prevent the adhesiveness between 2 and the net from peeling off.

As described above, the adhesive member 3 is simply applied to the end portions in the width direction of the header pieces 2a and 2b constituting the header portion 2, that is, the arbitrary portions such as the end portions and the vicinity of the end portions by simply applying the adhesive member 3. By stacking the header pieces 2a, 2b together,
The opening portion 1a of the bag body 1 sandwiched between them can be closed, and the opening portion 1 of the bag body 1 can be formed by bonding the header pieces 2a and 2b to each other.
The closed state of a can be maintained. Further, when at least one surface of the opening portion 1a of the bag body 1 is bonded or fused to the header portion 2, it is possible to prevent the bag body from coming off between the sandwiched header pieces 2a and 2b, and thus the bag body 1 The opening 1a can be surely closed, and the adhesive strength thereof can be maintained at a high level. Also when reopening, the header piece 2
It is only necessary to peel off the adhesive bonding between a and 2b, and it is possible to easily open and take out the contents. Besides, the header part 2 can be manufactured very easily, and the bag body can be closed very easily when used.

[0031]

EFFECT OF THE INVENTION 1. An adhesive member is applied to an arbitrary portion in the widthwise end direction of a header portion having at least two or more header pieces according to the present invention, which is not in contact with a bag body to be sandwiched. By doing so, it is possible to adhere the header pieces to each other, and thereby to close the sandwiched bag body. Therefore, it suffices to have an adhesive member at an arbitrary portion of the header portion, which makes it possible to manufacture extremely easily, and it is possible to close the opening portion of the bag body having low adhesiveness to the bag body and to firmly close the opening portion. It has the first effect. 2. When closing the bag, it is necessary to quickly pack a large number of products etc. into the bag through the opening of the bag and then to close the opening. The second effect is that not only can it be closed quickly, but also because it is not necessary to use a closing metal fitting such as a stapler, it can be inexpensively and safely closed.

3. Particularly, in the case of the mesh bag, the adhesive area of the mesh portion becomes extremely small and the adhesive strength becomes low. However, by bonding the header portions together, such a mesh portion is not formed. Instead, for example, since a wide bonding area can be secured in a sheet-shaped or film-shaped portion and bonding can be performed, there is a third effect that the bonding strength becomes extremely high. 4. By bonding or fusing at least one header piece to the bag in advance, when bonding the header pieces together,
Not only is it possible to position the header piece in advance at an optimal location where the bag body opening should be sandwiched to enable position regulation, but also the bag body and the header portion consisting of the header piece are separated before and after the opening is closed. It has the fourth effect of disappearing. 5. Also, by applying an adhesive member to the contact position of the at least one header piece with the bag body, for example, the edge portion,
When the header pieces are overlapped and the bag opening is sandwiched and closed, the bag itself and the header piece are adhered, and together with the adhesion of the header pieces, the bag opening can be closed more firmly. It has the fifth effect. 6. Even when the bag is opened, since the adhesive is basically adhered to by the header members, the bag can be reopened by expanding this part, and the contents can be taken out from the bag once closed. It has the sixth effect of being easy.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of a closing tool for an opening of a bag using a header piece having an adhesive member according to the present invention.

FIG. 2 is a view showing a state in which the bag is closed using the closing tool for the opening of the bag shown in FIG.

FIG. 3 is a view showing another embodiment of a closing tool for an opening of a bag using a header piece having an adhesive member according to the present invention.

FIG. 4 is a view showing another embodiment of the closing tool for the opening of the bag body using the header piece having the adhesive member according to the present invention.

FIG. 5 is a view showing another embodiment of a closing tool for an opening of a bag body using a header piece having an adhesive member according to the present invention.

[Explanation of symbols]

1 bag 1a opening 1b mesh 1c Bent part 2 header section 2a header piece 2b header piece 21 Edge 3 Adhesive members

Claims (12)

[Claims] 1. A header part 2 for closing an opening 1a of a bag 1 by sandwiching it with at least two or more header pieces 2a, 2b.
And a width of each of the header pieces 2a and 2b is wider than that of the bag body 1, and a width direction of the inner surface of the header piece 2a is in the end direction. Then, at least when the opening 1a of the bag 1 is sandwiched, the adhesive member 3 is applied to a portion that does not contact the opening 1a, and the opening 1a of the bag 1 is attached to the header pieces 2a, 2b.
A closure device for the opening of the bag body, characterized in that the header pieces 2a, 2b are bonded together by the adhesive member 3 so that the opening 1a of the bag body 1 can be closed. 2. The closing tool for the opening of the bag body according to claim 1, wherein the bag body 1 is a mesh bag body 1. 3. The closing tool for the opening of the bag according to claim 2, wherein the mesh bag 1 is a net bag. 4. The opening of the bag body according to claim 2, wherein the mesh bag body 1 is a bag body 1 having a stretchable mesh in which monofilament-shaped filaments are crossed and integrated. Closure. 5. The closing tool for the opening of the bag according to claim 2, wherein the mesh-like bag 1 is a bag 1 made of non-woven mesh or woven mesh. 6. The bag 1 from the portion in the widthwise end direction of the inner surface of the header piece 2a that is not in contact with the opening 1a of the bag 1 when sandwiching the opening 1a. The adhesive member 3 is applied even to the portion in contact with the opening 1a, and the bag 1
By sandwiching the opening 1a of each of the header pieces 2a and 2b with the adhesive member 3, the header piece 2
The bag body according to any one of claims 1 to 5, characterized in that a and 2b are bonded to each other and a part of the bag body 1 is also bonded together so that the opening 1a of the bag body 1 can be closed. A closure for the opening. 7. The closing of the opening of the bag body according to claim 1, wherein the header portion 2 is formed by bending a sheet-like material to form the respective header pieces 2a and 2b. Ingredient 8. The opening of the bag body according to claim 1, wherein at least one of the header pieces and the bag body 1 are bonded by an adhesive member 3. Closure. 9. The closure device for the opening of the bag body according to claim 1, wherein at least one of the header pieces and the bag body 1 are fused to each other. . 10. An inner surface of another header piece, comprising:
10. Closing the opening of the bag body according to claim 8 or 9, characterized in that an adhesive member 3 is applied to a portion which comes into contact with the surface of the bag body 1 when the header pieces 2a, 2b are sandwiched therebetween. Ingredient 11. An adhesive member is provided at both end portions in the longitudinal direction of the inner surface of the header pieces 2a, 2b, and at portions not contacting the opening 1a when at least the opening 1a of the bag 1 is sandwiched. 3 is applied, and the header pieces 2a and 2b are overlapped with each other, so that the two overlapping header pieces 2
11. The closure device for the opening of the bag body according to claim 1, wherein the header pieces 2a, 2b can be adhered to each other by an adhesive member 3 applied to each surface of a and 2b. . 12. The closing tool for the opening of the bag body according to claim 1, wherein the adhesive member 3 is hot melt.