JP5574784B2 - Paper bag with valve - Google Patents

Description

  The present invention relates to a paper bag with a valve for storing powder particles such as rice, wheat and buckwheat, and more specifically, an outer side formed by a valve paper at an opening of a paper bag body formed of a multilayer paper-like material. A sleeve valve is attached, and a self-adhesive adhesive coating surface is provided on the outer surface of the outer sleeve valve on the particle inlet opening side. After the powder is filled, the powder inlet opening side of the outer sleeve valve is folded. Further, the present invention relates to a paper bag with a valve in which self-adhesive adhesive application surfaces are bonded to each other, and a powder-particle opening is closed.

  As a conventional paper bag, as shown in FIGS. 9 and 10, a paper tube a made of a multilayer paper material is flatly folded, and folded portions c and d are formed at both corners of the open end b of the paper tube a. At the same time, one of the upper paper e and the lower paper f of the paper tube a is opened to form a development surface g, and the upper paper e and the lower paper f are folded and folded so as to close the opening h at the center of the development surface g. The simplest shape is known, which is folded along and bonded together, and the decorative paper j is adhered and fixed thereon to constitute the bottom (see, for example, Patent Document 1).

Further, there is known a valve in which a valve is attached to a paper bag as described in Patent Document 1 so that the powder body can be easily filled in the paper bag. That is, as shown in FIG. 11, in the paper bag with a valve, an outer sleeve valve k is attached to one of the folding parts c and d of the development surface g described above, and heat-melt bonding is performed on the entire inner surface of the outer sleeve valve k. An agent coating surface is provided, and after filling the granular material into the paper bag with valve through the outer sleeve valve k, the outer sleeve valve k is heated, and the entire inner surface of the outer sleeve valve k is bonded by the heated melt adhesive coating surface. Thus, the paper bag with valve is sealed (see, for example, Patent Document 2).

  Furthermore, the valve-equipped paper bag shown in FIGS. 12 and 13 is provided with a heat-melt adhesive application surface m on the outer end side of the inner surface L of the outer sleeve valve k, and adheres the heat-melt adhesive application surface m on the outer end side. The valve-equipped paper bag is sealed (see, for example, Patent Document 3).

  In addition to the valve-attached paper bag of Patent Documents 1 and 2, there is known a valve that does not use a valve, and therefore has no step of closing the valve, so that powder particles can be filled into the paper bag. That is, as shown in FIG. 14 (see Patent Document 4), the bottom of this paper bag is formed in the same manner as the paper bag described in Patent Document 1, but a paper sealing band is formed in the mouth n. After o is attached and the granular material is filled into the paper bag from the mouth n, the mouth band n is bound, the mouth n is closed, and the paper bag is sealed.

No. 1-226600 Utility Model Registration No. 3046996 JP 2005-178818 A Japanese Utility Model Publication No. 50-1447

  The paper bag with valve of Patent Document 2 is provided with a heat-melt adhesive application surface on the entire inner surface of the outer sleeve valve k, and filling of the powder is performed by inserting a nozzle for supplying powder into the outer sleeve valve k. Therefore, there is a possibility that the heat-melt adhesive application surface and the powder supply nozzle are rubbed over the entire inner surface, and a part of the heat-melt adhesive is mixed into the powder as foreign matter. Further, since the heat-melt adhesive application surface is provided on the entire inner surface of the outer sleeve valve k, there is a high possibility of blocking during storage of the valve-attached paper bag.

 On the other hand, after filling the powder bag into the paper bag with the valve, the outer sleeve valve k is heated and the entire inner surface is bonded by the heated melt adhesive application surface. Other than the outer end side of the valve k, the decorative paper j, the upper paper e, and the lower paper f are applied to the heat-melt adhesive application surface, so that the decorative paper j, the upper paper e, and the lower paper f serve as a heat insulating material. In particular, the portion of the heated melt adhesive application surface heated through the upper paper e and the lower paper f, that is, the inner peripheral surface on the inner end side of the outer sleeve valve k is not bonded. Therefore, the heat-melt adhesive application surface of the outer sleeve valve k does not contribute to the sealing of the paper bag with the valve without being involved in the adhesion even though it causes the mixing of foreign matter and the cause of blocking.

  In addition, the paper bag with a valve of Patent Document 3 has only the region that contributes to the adhesion of the outer sleeve valve k to the heated melt adhesive application surface m, so that it does not cause foreign matter mixing or blocking. In addition, it is troublesome to heat-melt and bond the heat-melt adhesive application surface m, and a facility for that purpose is also required.

  Moreover, the paper bag of patent document 4 is sealed by binding the sealing band o after filling the granular material therein, and conversely opening the unsealing sealing band o and taking out the granular material. Therefore, both require considerable labor.

  Therefore, the object of the present invention is to eliminate the cause of foreign matter mixing and the cause of blocking as much as possible, to make sealing of the outer sleeve valve after filling the granular material easy and reliable, and in addition, the mouth after opening Another object is to provide a paper bag with a valve that can be easily opened and closed.

The present invention has been proposed in order to achieve the above object, and is characterized by having the following configuration.
That is, according to the present invention, an outer sleeve valve formed by bending a valve paper is attached to an opening of a paper bag body formed of a multilayer paper-like material, and powder particles are put into the paper bag body through the outer sleeve valve. In the multilayer paper-like material forming the paper bag main body , a self-adhesive adhesive application surface is provided on the outer surface of the paper bag main body side on the powder body opening side of the outer sleeve valve. A paper bag with a valve in which a sealing band for closing a mouth portion after opening of the paper bag main body is accommodated in the axial direction of the paper bag main body, and after the powder is filled , the powder input opening side of the outer sleeve valve Folding both corners to the side of the paper bag body, pasting together the self-adhesive adhesive application surfaces, and further winding the folded part on the side of the paper bag body, closing the powder body opening Characteristic valve Paper bag is provided.

  Moreover, according to this invention, the paper bag with a valve | bulb formed by sticking decorative paper on the bonding part of the said self-adhesive adhesive application surface of the said outer sleeve valve | bulb is provided.

  Further, according to the present invention, the storage location of the sealing band in the multilayer paper-like material of the paper bag body is such that the bonding portion between the outer-layer paper-like materials and the inner-layer paper-like material in the multilayer paper-like material are attached. A paper bag with a valve formed by adhering the outer-layer paper-like material and the inner-layer paper-like material in the space so as to form a gap for accommodating the sealing band is formed by shifting the space between the joint portions. Provided.

  According to the invention, the self-adhesive adhesive on the self-adhesive adhesive application surface is any one selected from rubber / latex, acrylic, ethylene vinyl acetate (EVA), polyurethane, and hot melt. A paper bag with a valve is provided.

The operation of the first problem solving means is as follows. That is, after filling the paper bag body through the outer sleeve valve with the powder and then folding the powder injection opening side of the outer sleeve valve so that the self-adhesive adhesive application surfaces are in close contact with each other, the self-adhesive adhesive The application surfaces can be bonded to each other to close the granular material charging opening of the outer sleeve valve.
Furthermore, after opening the paper bag body, when it is necessary to close the mouth, take out the mouthband stored in the multilayer paper-like material, bind the mouth with the mouthband and close the mouth, The mouthband can be opened and the mouth can be opened.

  In addition, since the effect of the second problem solving means is that the decorative paper is bonded on the bonding portion of the surface of the outer sleeve valve where the self-adhesive adhesive is applied. The closing opening is more tightly closed to improve the sealing performance.

In addition, the third problem solving means has an effect that the sealing band is accommodated in the accommodation portion that is a gap between the outer-layer paper-like material and the inner-layer paper-like material in the space. And does not get in the way.

In addition, since the action of the fourth problem solving means is to adhere only when the self-adhesive adhesive application surfaces are in contact with each other, the other paper-like part and the granular material to be filled are self-adhesive adhesive application surfaces. Do not adhere to.

According to the paper bag with a valve of the present invention, it is possible to eliminate the cause of foreign matter mixing and the cause of blocking, and the sealing of the outer sleeve valve after filling of the granular material can also be applied to other paper-like material parts and the granular material to be filled. Without being involved, it is easy and reliable, and after opening the main body of the paper bag, the mouth can be easily closed with a sealing band, and the opening can be facilitated .

  Moreover, according to the paper bag with a valve of the present invention, in addition to the above effects, the outer sleeve valve can be more reliably sealed with the decorative paper, and the sealing performance of the paper bag main body can be improved.

  Moreover, according to the paper bag with a valve of the present invention, in addition to the above-described effects, there is an effect that the sealing band can be stored without being bulky and obstructive at the storing portion formed by the gap formed by the sticking portion.

  Further, according to the paper bag with a valve of the present invention, in addition to the above effects, there is an effect that the outer sleeve valve can be sealed with various self-adhesive adhesives.

It is a perspective view of a paper bag with a valve which shows an embodiment of the invention. It is a perspective view which shows the manufacture state of the paper bag with the valve. It is a top view which shows the manufacture state of the paper bag with the valve. It is a top view which shows the manufacture state of the outer sleeve valve of the paper bag with the valve. FIG. 5 is a plan view showing a production state of the outer sleeve valve of FIG. 4. FIG. 5 is a plan view showing a production state of the outer sleeve valve of FIG. 4. FIG. 5 is a plan view showing a production state of the outer sleeve valve of FIG. 4. It is sectional drawing which shows the accommodation state of the sealing band of the paper bag with a valve | bulb. It is a top view which shows the prior art example of patent document 1. It is a top view which similarly shows the prior art example of patent document 1. FIG. It is a top view which shows the prior art example of patent document 2 . It is a perspective view which shows the prior art example of patent document 3. It is a perspective view which similarly shows the outside sleeve valve of the prior art example of patent document 3. FIG. It is a top view which shows the prior art example of patent document 4.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  In the drawing, a valve-equipped paper bag 1 is provided with an outer sleeve valve 4 bent by a valve paper at an opening 3 of a paper bag body 2 formed of a multilayer paper-like material 10 described later. The body can be freely filled in the paper bag main body 2, and the outer sleeve valve 4 is provided with a self-adhesive adhesive application surface 6 on the outer surface 4 a on the paper bag main body side on the side of the powder body inlet opening 5. After filling, the both corners of the outer sleeve valve 4 on the side of the granular material loading opening 5 are folded to the paper bag main body side, the self-adhesive adhesive application surfaces 6 and 6 are bonded together, and the folded portion is It is wound around the paper bag main body side and closes the granular material charging opening 5.

  As shown in FIGS. 2 and 3, the paper bag body 2 folds a paper tube 11 made of a multilayer paper material 10 flatly and folds into both corners 12 a and 12 b of one open end 12 of the paper tube 11. Forming the portions 13 and 14, and opening one of the upper paper 15 and the lower paper 15a to form the development surface 16, and folding the upper paper 15 and the lower paper 15a so as to close the opening 3 of the development surface 16. Streaks 17 and 17 are attached, and the upper paper 15 and the lower paper 15a are folded and bonded along the folding lines 17 and 17, and further, decorative paper 18 is bonded thereon to form a bottom portion.

  The paper tube 11 is selected to have an arbitrary diameter and length according to the purpose of use. In FIGS. 1 and 2, the paper tube 11 is a two-ply paper material having an outer layer paper material 20 and an inner layer paper material 21. 10 is used, but the present invention is not limited to this, and a multilayer of three or more layers may be used. The material is not limited to kraft paper, and a resin sheet, a paper with a resin sheet attached to paper, or the like is used.

  Then, the paper tube 11 is flatly folded as shown in FIG. 2, bent in the direction of the arrow A along the crease line 22, and as shown in FIG. 3, at both corners 12a and 12b of the opening end portion 12. Triangular folding portions 13 and 14 are formed, and the upper paper 15 side of the paper tube 11 is opened to form a hexagonal development surface 16. Since the development surface 16 has the opening 3 at the center, it is necessary to bend the upper paper 15 and the lower paper 15a toward the opening 3 in order to close the opening 3. Accordingly, the folding lines 17 and 17 are attached to the upper paper 15 and the lower paper 15a, the upper paper 15 and the lower paper 15a are folded along the folding lines 17 and 17, and at least the hatched portions of the upper paper 15 and the lower paper 15a. A bonding agent is applied and pasted to 23 and 23a. In addition, adhesives, such as polyvinyl acetate, polyvinyl alcohol, an acrylic type, rubber type, starch paste, are used for this bonding agent.

  On the other hand, the outer sleeve valve 4, as shown in FIG. 4, first folds the end 5 </ b> A on the opposite side of the granular material loading opening 5 of the valve paper 24 to the outer surface 4 a side to prevent the granular material from leaking. Further, it is folded along a fold shown by a two-dot chain line in FIG. 4 so as to become a pocket, and is formed into a cylindrical shape as shown in FIG. The outer surface 4a of the outer sleeve valve 4 is provided with a self-adhesive adhesive application surface 6 as described above. The outer sleeve valve 4 has a width between the fold lines 17 and 17 shown in FIG. 3 and has a length extending over the opening 3 beyond the apex angle 14a of the folding part 14 and beyond the bottom 14b of the folding part 14. There is. The outer sleeve valve 4 is inserted into the folding portion 14 and stuck in a sealed state when the upper paper 15 and the lower paper 15a are folded along the folding lines 17 and 17.

  Therefore, according to the outer sleeve valve 4, it is possible to supply the granular material from the granular material supply nozzle into the paper bag body 2 without leaking from around the outer sleeve valve 4, and after the supply of the granular material is completed. The outer sleeve valve 4 is closed. When the outer sleeve valve 4 shown in FIG. 5 is folded as shown in FIG. 6, the outer surface 4 a comes up, so that the self-adhesive adhesive application surface 6 comes up, and further, the granular material charging opening 5 6a is folded along the fold shown by the two-dot chain line in FIG. 6, the self-adhesive adhesive application surfaces 6 are in close contact with each other, and the granular material charging opening 5 of the outer sleeve valve 4 is closed. become. The material of the outer sleeve valve 4 is the same as that of the paper-like material 10.

In addition, the self-adhesive adhesive in the present invention is an adhesive that adheres only when the application surfaces are in contact with each other, and other paper-like parts and powder particles in the middle of filling are self-adhesive adhesives. Even if it contacts the coated surface, it does not adhere. The self-adhesive adhesive used for the self-adhesive adhesive coated surface 6 is not particularly limited as long as it has self-adhesive properties, but rubber / latex, acrylic, ethylene vinyl acetate (EVA), polyurethane, hot melt, etc. From this, one self-adhesive adhesive is selected.

  Then, the decorative paper 18 is pasted on the upper paper 15 and the lower paper 15a after the outer sleeve valve 4 is attached to the opening 3 of the paper bag body 2 to complete the product. However, the decorative paper 18 is pasted after the granular material is supplied into the paper bag body 2 through the outer sleeve valve 4 as described above. Therefore, it is handed over to the customer as the paper bag 1 with a valve in a state where the outer sleeve valve 4 is opened and the decorative paper 18 is not pasted together, and the granular material is stored inside the paper bag 1 with the valve by the customer. After that, the corner 5a of the granular material charging opening 5 is folded, the self-adhesive adhesive application surfaces 6 are adhered and adhered, and the granular material charging opening 5 of the outer sleeve valve 4 is closed. The decorative paper 18 is pasted on top.

  Further, as shown in FIG. 1, the other open end 12A of the paper tube 11 shown in FIG. 2 has no outer sleeve valve 4 and decorative paper as compared with the one open end 12 described above. Except that the cut tape 25 is attached to 18, the mouth portion 26 is formed in almost the same configuration.

  Further, in the multilayer paper-like material 10 forming the paper bag body 2, a sealing band 27 that closes the mouth part 26 after the mouth part 26 of the paper bag body 2 is opened is stored in the axial direction of the paper bag body 2. Has been. And the storing location of the sealing band 27 in the multilayer paper-like material 10 of the paper bag main body 2 is as shown in FIG. 8, the bonding part 28 of the outer-layer paper-like materials 20 in the multilayer paper-like material 10, and the inner-layer paper-like. A space 30 is formed by shifting between the bonding portions 29 of the objects 21 so that a space 31 for accommodating the sealing band 27 is formed between the outer layer paper-like material 20 and the inner layer paper-like material 21 in the space 30. It is made by sticking. Therefore, when it is necessary to close the mouth portion 26 after the paper bag body 2 is opened, the mouthband 27 stored in the multilayer paper-like material 10 is taken out and the mouth portion 26 is bound by the mouthband 27. The mouth 26 can be closed, and the mouth 26 can be opened by opening the sealing band 27.

  The sealing band 27 is not bulky and is obstructive because the sealing band 27 is stored in a storage portion that is a gap 31 formed by the adhering portions 32 and 33 between the outer paper layer 20 and the inner paper member 21 in the space 30. It will not be.

  Although the first embodiment of the present invention has been described above, it should be understood that the specific configuration is not limited to this, and that changes can be made as appropriate without departing from the scope of the present invention.

  The paper bag with valve of the present invention eliminates the cause of foreign matter mixing and blocking as much as possible, makes it easy and reliable for sealing the outer sleeve valve after filling the granular material, and the mouth after opening is also easy When you want to close or open it, the availability becomes very high.

DESCRIPTION OF SYMBOLS 1 Paper bag with valve 2 Paper bag main body 3, h Opening part 4, k Outer sleeve valve 4a Outer surface 5 Powder body opening 6 Self-adhesive adhesive application surface 10 Paper-like material 11, a Paper-like tube 12, 12A, b Opening Edges 12a, 12b Corners 13, 14, c, d Folding part 14a Top angle 14b Bottom 15e e Upper paper 15a, f Lower paper 16, g Unfolding surface 17, 22, i Folded line 18, j Cosmetic paper 20 Outer paper Shaped material 21 Inner layer paper-like material 23, 23a Shaded portion 24 Valve paper 25 Cut tape 26, n Port 27, o Sealing band 28, 29 Bonding portion 30 Space 31 Gap 32, 33 Adhesive portion L Inner surface m Heat melting Adhesive surface

Claims (4)

An outer sleeve valve formed by bending a valve paper is attached to an opening portion of a paper bag main body formed of a multilayer paper-like material, and powder particles can be filled into the paper bag main body through the outer sleeve valve. Provided with a self-adhesive adhesive coating surface on the outer side of the paper bag main body side on the powder input opening side of the valve, and in the multilayer paper-like material forming the paper bag main body, the mouth after opening the paper bag main body A paper bag with a valve in which a sealing band is closed in the axial direction of the paper bag main body, and after filling the granular material, both corners of the outer sleeve valve on the granular material charging opening side are on the paper bag main body side. Folded together, the self-adhesive adhesive application surfaces are bonded together,
Furthermore, the folded bag part is wound around the paper bag main body side, and the powdery material charging opening is closed, and the paper bag with a valve characterized by the above-mentioned.   The paper bag with a valve according to claim 1, wherein a decorative paper is adhered on a bonding portion of the self-adhesive adhesive application surface of the outer sleeve valve. The storage location of the sealing band in the multilayer paper-like material of the paper bag body is shifted between the bonding portion between the outer-layer paper-like materials and the bonding portion between the inner-layer paper-like materials in the multilayer paper-like material. 3. The paper bag with a valve according to claim 1 or 2 , wherein a space is formed, and the outer layer paper-like material and the inner layer paper-like material in the space are stuck so that a gap for accommodating the sealing band is formed. The self-adhesive glue in the self-adhesive adhesive coating surface, rubber latex, acrylic, ethylene vinyl acetate (EVA), polyurethane, any one of claims 1, which is any one selected from hot melt 3 1. A paper bag with a valve according to item 1.

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