JP5500591B2 - 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 made of a multilayer paper-like material. A sleeve valve is attached, and one or more folds are formed on the powder input opening side of the outer sleeve valve, and a self-adhesive adhesive application surface is provided on the uppermost fold. After filling, the self-adhesive adhesive provided on the decorative paper covering the opening of the paper bag body on the surface of the outer sleeve valve by folding the powder input opening side and applying the self-adhesive adhesive on the uppermost folding part The present invention relates to a paper bag with a valve formed by applying and sticking an application surface and closing a powder and material input opening.

  As a conventional paper bag, as shown in FIGS. 10 and 11, 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. 12, this paper bag with a valve has an outer sleeve valve k attached to one of the folding portions c and d of the development surface g described above, and is heated and melt bonded to 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).

  Further, the paper bag with a valve shown in FIGS. 13 and 14 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. 15 (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

Japanese Industrial Standards JIS Z0102: 2004 Kraft paper bag 3.5.3 "Foldless open-type bottom bag" A-1 'Single-bottom bag with paper band

  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, there is a case in which 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 a valve in some cases, although it may be a cause of foreign matter mixing or a blocking cause.

  In addition, since the paper bag with a valve of Patent Document 3 has only the area that contributes to the adhesion of the outer sleeve valve k to the heated melt adhesive application surface m, 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 equipment for that purpose is also required.

In addition, the paper bags of Patent Document 4 and Non-Patent Document 1 are filled with powder and then sealed by tying the sealing band o, and conversely, opening the unsealed sealing band o and opening the powder Since the particles are taken out, both of them require considerable labor.

  Therefore, the object of the present invention is to eliminate the cause of foreign matter mixing and the cause of blocking, to easily and reliably seal the outer sleeve valve after filling the granular material, and also to easily open the mouth after opening. It is to provide a paper bag with a valve that can be 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 folding a valve paper is attached to an opening of a paper bag body made of a multilayer paper-like material, and the granular material is filled into the paper bag body through the outer sleeve valve. Freely, the outer sleeve valve powder body opening side is folded at least once on the opposite side of the paper bag body with a predetermined width to form one or more folds, and the uppermost fold is automatically A self-adhesive adhesive provided in the uppermost folding portion, provided with an adhesive adhesive application surface, after filling the granular material, folding the powder inlet opening side of the outer sleeve valve one or more times A paper bag with a valve, characterized in that a self-adhesive adhesive application surface provided on a decorative paper covering the opening side of the paper bag main body is brought into contact with and pasted on an application surface, and the powder and particle injection opening is closed. Is provided.

  Further, according to the present invention, there is provided 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 a multilayer paper-like material forming the paper bag main body in an axial direction of the paper bag main body. 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 present invention, the self-adhesive adhesive on the self-adhesive adhesive-coated surface is selected from the group consisting of rubber / latex, acrylic, ethylene vinyl acetate (EVA), polyurethane, and hot melt. A valved paper bag is provided.

  The operation of the first problem solving means is as follows. That is, after filling the paper bag body with the powder through the outer sleeve valve, the powder inlet opening side of the outer sleeve valve is folded at least once on the opposite side of the paper bag body with a predetermined width, and the uppermost folding The self-adhesive adhesive application surface provided on the decorative paper is brought into contact with and adhered to the self-adhesive adhesive application surface of the part, and the powder body charging opening of the outer sleeve valve is closed.

  In addition, when the paper bag body needs to be closed after the opening of the paper bag body, the second problem solving means operates by taking out the sealing band stored in the multilayer paper-like material and sealing the mouth. Tie it with a band and close it, or unwrap the mouthband and open the mouth.

  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. It can be easily and reliably performed without being involved, and further has an effect of improving the sealing and protection of the paper bag body.

  Moreover, according to the paper bag with a valve of the present invention, in addition to the above effect, after opening the paper bag main body, the mouth can be easily closed with a sealing band, and the opening can be easily reversed. is there.

  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. It is a perspective view which shows the manufacture state of the outer side sleeve valve | bulb of FIG. 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 side view, partly in section, showing a sealed 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 of the prior art example shown by patent document 1. FIG. It is a top view of a prior art example similarly shown in patent documents 1. It is a top view of the prior art example shown by patent document 2. FIG. It is a perspective view of the prior art example shown by patent document 3. FIG. It is a perspective view of the outer sleeve valve of the prior art example similarly shown in patent documents 3. It is a top view of the prior art example shown by patent document 4. FIG.

  In the following, preferred embodiments for carrying out the present invention will be described with reference to the drawings.

  In the drawings, the valve-equipped paper bag 1 is provided with an outer sleeve valve 4 formed by bending a valve paper 30 (see FIG. 4) in an opening 3 of a paper bag body 2 formed of a multilayer paper-like material 10 which will be described in detail later. A powder body can be filled into the paper bag body 2 through the outer sleeve valve 4, and the powder body loading opening 5 side of the outer sleeve valve 4 is folded at least once on the opposite side of the paper bag body 2 with a predetermined width. The above folding part 7 (see FIG. 6) is formed, the uppermost folding part 7a is provided with a self-adhesive adhesive application surface 6, and the powder of the outer sleeve valve 4 is filled after the powder is filled. The decorative paper 18 that covers the opening 3 side of the paper bag body 2 on the self-adhesive adhesive application surface 6 in the uppermost folding part 7a (see FIG. 7) is folded once or more on the body insertion opening 5 side. The self-adhesive adhesive application surface 6 (see FIGS. 1 and 3) provided on the substrate is brought into contact with and adhered to the powder It is intended to close the input opening 5.

  As shown in FIGS. 2 and 3, the paper bag body 2 is formed by a paper tube 11 made of a multilayer paper material 10. That is, the paper tube 11 is first folded flat as shown in FIG. 2 and then bent in the direction of the arrow A along the folding line 22. Next, as shown in FIG. 3, both corners 12a and 12b of the opening end 12 are folded inward to form triangular folding portions 13 and 14, and the upper paper 15 side of the paper tube 11 is opened to form a hexagonal shape. The development surface 16 is formed. 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. Therefore, the upper paper 15 and the lower paper 15a are provided with the folding lines 17 and 17, the lower paper 15a is first folded along the folding lines 17 and 17, the upper paper 15 is folded on the upper paper 15 and the upper paper 15 is folded. Since the bonding agent is applied to at least the hatched portions 23 and 23a of the lower paper 15a, they are bonded together. Furthermore, the paper bag main body 2 is formed by the decorative paper 18 being pasted thereon to form the bottom. In addition, as for the above-mentioned bonding agent, adhesive agents, such as polyvinyl acetate, polyvinyl alcohol, an acrylic type, rubber type, starch paste, are used.

The paper tube 11 is selected to have an arbitrary diameter and length according to the purpose of use. In FIGS. Although the shape 10 is used, it is not limited to this, 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.

  Further, the decorative paper 18 covers the opening 3 side of the paper bag main body 2 and further covers the uppermost folding portion 7a of the outer sleeve valve 4 on the side of the granular material loading opening 5, and the self-adhesive adhesive. The self-adhesive adhesive application surface 6 of the decorative paper 18 is brought into contact with and pasted on the application surface 6, and the granular material charging opening 5 is closed. Therefore, the decorative paper 18 can more reliably seal the outer sleeve valve 4, and can also improve the sealing and protection of the paper bag body 2.

  On the other hand, the outer sleeve valve 4, as shown in FIGS. 4 and 5, first folds the end portion 5 </ b> A on the opposite side of the powder material inlet opening 5 of the valve paper 30 to the outer surface 4 a side, The outer sleeve valve 4 is formed into a pocket 31 (see FIG. 8) for preventing leakage of the granular material, and is further folded along a fold line shown by a two-dot chain line in FIG. 6). The outer sleeve valve 4 has a width between the folding lines 17 and 17 shown in FIG. 3 and is outside the apex angle 14a of the folding part 14, and more preferably, the opening beyond the bottom side 14b of the folding part 14 There is a length that spans part 3. 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.

  Since the outer sleeve valve 4 has the pocket 31, the granular material from the granular material supply nozzle can be supplied into the paper bag body 2 without leaking around the outer sleeve valve 4, and the granular material can be supplied. After the supply is finished, the outer sleeve valve 4 is closed. The outer sleeve valve 4 is folded one or more times. For example, in FIG. 6 and FIG. 7, the outer sleeve valve 4 is folded once, so that there is one fold portion 7 to form the uppermost fold portion 7a. A self-adhesive adhesive application surface 6 is provided on the tatami portion 7a. In addition, if it folds twice, the two folding parts 7a and 7b will be formed.

  Then, when the outer sleeve valve 4 of FIG. 6 is folded in the direction of arrow B from the two-dot chain line 32, the state shown in FIG. 7 is obtained, and the self-adhesive adhesive application surface 6 of the folding portion 7a becomes the front. When the decorative paper 18 is covered on the folding part 7a in this state, the self-adhesive adhesive application surface 6 provided on the decorative paper 18 and the self-adhesive adhesive application surface 6 of the folding part 7a abut against each other. The outer sleeve valve 4 is closed by wearing. The material of the outer sleeve valve 4 is the same as that of the multilayer paper 10. Further, the outer sleeve valve 4 has been described as being folded once, but it may be performed twice or more.

  Here, the self-adhesive adhesive of the self-adhesive adhesive application surface 6 is one that adheres only when the application surfaces are in contact with each other, and other multi-layer paper-like parts or powders in the middle of filling. Even if the granules contact the self-adhesive adhesive application surface 6, they do 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. Any self-adhesive adhesive can be selected from these.

  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, thereby completing 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 with valve 1 in a state in which the outer sleeve valve 4 is opened and the decorative paper 18 is not pasted. For this reason, after storing a granular material in the paper bag 1 with a valve | bulb by a consumer, the granular material injection | throwing-in opening 5 side is folded in the opposite direction of the paper bag main body 2, and self-adhesive adhesive application of the folding part 7a is carried out. The face 6 is faced up, the decorative paper 18 is covered thereon, and the self-adhesive adhesive application surface 6 of the decorative paper 18 and the self-adhesive adhesive application surface 6 of the folding part 7a are brought into contact with each other and adhered. Thus, the outer sleeve valve 4 is closed.

  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 33 is attached to 18, the mouth portion 34 is formed in substantially the same configuration.

  In the multilayer paper-like material 10 forming the paper bag body 2, a sealing band 35 for closing the mouth part 34 after the mouth part 34 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 35 in the multilayer paper-like material 10 of the paper bag main body 2 is as shown in FIG. 9, the bonding part 36 of the outer-layer paper-like materials 20 in the multilayer paper-like material 10, and the inner-layer paper-like. A space 38 is formed by shifting between the bonding portions 37 of the objects 21 so that a gap 39 for accommodating the sealing band 35 is formed between the outer-layer paper-like material 20 and the inner-layer paper-like material 21 in the space 38. It is made by sticking. Therefore, when it is necessary to close the mouth 34 after opening the paper bag body 2, the mouthband 35 stored in the multilayer paper 10 is taken out, and the mouth 34 is bound by the mouthband 35. The mouth 34 can be closed, and the mouth 34 can be opened by opening the sealing band 35.

  The sealing band 35 is not bulky because the sealing band 35 is stored in the storage portion which is the gap 39 by the adhering portions 40 and 41 of the outer layer paper material 20 and the inner layer paper material 21 in the space 38, and It will not get in the way.

  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 a valve 2 Paper bag main body 3, h Opening part 4, k Outer sleeve valve 4a Outer surface 5 Powder body opening 5A End part 6 Self-adhesive adhesive application surface 7, 7a, 7b Folding part 10 Multilayer paper-like material 11, a Paper tube 12, 12A, b Open end 12a, 12b Angle 13, 14, c, d Folding portion 14a Top angle 14b Bottom 15, e Upper paper 15a, f Lower paper 16, g Unfolding surface 17, 22 , I fold line 18, j decorative paper 20 outer layer paper-like material 21 inner layer paper-like material 23, 23a hatched portion 30 valve paper 31 pocket 32 two-dot chain line 33 cut tape 34, n mouth portion 35, o sealing band 36, 37 Bonding part 38 Space 39 Gap 40, 41 Adhering part L Inner surface m Heated melt adhesive application surface

Claims (4)

  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 can be filled into the paper bag body through the outer sleeve valve, the outer sleeve valve One or more folds are formed by folding at least one fold on the opposite side of the paper bag body with a predetermined width, and a self-adhesive adhesive application surface is provided on the uppermost fold. After filling the granular material, fold the granular material inlet opening side of the outer sleeve valve one or more times and place the paper bag body on the self-adhesive adhesive application surface in the uppermost folding part. A paper bag with a valve, characterized in that a self-adhesive adhesive application surface provided on decorative paper covering the opening side is brought into contact with and stuck to close the powder and material opening.   The paper bag with a valve according to claim 1, wherein a sealing band for closing a mouth portion of the paper bag main body after opening the paper bag main body is accommodated in an axial direction of the paper bag main body in the multilayer paper-like material forming the paper bag main body.   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. The paper bag with a valve according to claim 2, wherein a space is formed, and the outer-layer paper-like material and the inner-layer paper-like material in the space are adhered so that a gap for accommodating the sealing band is formed. The self-adhesive adhesive on the surface of the self-adhesive adhesive is selected from the group consisting of rubber / latex, acrylic, ethylene vinyl acetate (EVA), polyurethane, and hot melt. A paper bag with a valve according to any one of the preceding claims.

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