JP5579005B2 - Paper bag with valve - Google Patents

Description

  The present invention relates to a valve-equipped paper bag for storing powder particles of rice, wheat, buckwheat, etc., and more specifically, with a valve paper at the opening of a paper bag body made of a multilayer paper-like material. The formed outer sleeve valve is attached, and one or more folding parts are formed on the outer side of the powder inlet opening of the outer sleeve valve, and a self-adhesive adhesive application surface is provided on the folding part, to the bag body After filling the granular material, fold the granular material inlet opening side of the outer sleeve valve, abut the self-adhesive adhesive application surface of the fold part and stick them together, and close the granular material inlet opening It relates to a paper bag with a valve.

  As a conventional paper bag, as shown in FIGS. 12 and 13, 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 an 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. 14, in the paper bag with a valve, an outer sleeve valve k is attached to one of the folding portions c and d of the development surface g described above, and heat melting and bonding are 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).

  Further, the valve-equipped paper bag shown in FIGS. 15 and 16 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. 17 (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 "Open-bottomed bottomless bag without folds" A-1 'Single bottomed 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. 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, the opening of the bag body configured with a multilayer sheet-like material, Rutotomoni attaching the outer sleeve valve which is formed by bending at the valve sheet, on the opening side of the paper bag body extending The decorative paper having a portion is pasted together, and the decorative paper is pasted on the folding pasting portion of the outer sleeve valve on the side of the powdery material charging opening by extending the extending portion. A paper bag which covers the folding and sticking portion at an exit portion and inserts the extension portion into a pocket formed by the paper bag body and the outer sleeve valve, the outer sleeve The paper bag main body can be filled freely with powder granules through the valve, and the powder injection opening side of the outer sleeve valve is folded at least once on the opposite side of the paper bag main body with a predetermined width, and one or more folding parts Forming one or more folding parts A self-adhesive adhesive-coated surface is provided, and after filling the granular material, the granular material input opening side of the outer sleeve valve is folded at least once, and the self-adhesive adhesive at one or more folding parts There is provided a paper bag with a valve, characterized in that the application surfaces are brought into contact with each other and adhered to form a fold-attached portion, and the powdery material introduction opening is closed by the fold-attached portion.

  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 then one or more folds The self-adhesive adhesive application surfaces of the parts are brought into contact with each other and stuck together, and the powdery substance inlet opening of the outer sleeve valve is closed by this folding sticking part. Furthermore, the folding sticking portion is wrapped around and covered with the extending portion of the decorative paper, and the extending portion is inserted into the pocket .

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 or granular material to be filled. Without being involved, it is easy and reliable, and the outer sleeve valve is more reliably sealed with the decorative paper, and the sealing and protecting properties of the paper bag main body are enhanced.

  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 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, and the one or more folding parts 7 are provided with a self-adhesive adhesive application surface 6. Folding part 34 (see FIG. 10) is formed by folding the granule throwing opening 5 side one or more times and bringing the self-adhesive adhesive application surfaces 6 of one or more folding parts 7 into contact with each other. And the granular material injection | throwing-in opening 5 is closed by this folding sticking part 34. As shown in FIG.

  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. This decorative paper 18 covers the opening 3 side of the paper bag main body 2, further has an extending portion 18 a, and extends on the folding and sticking portion 34 on the powder input opening 5 side of the outer sleeve valve 4. 18 a is extended and pasted, and the folded portion 34 is wrapped around and covered by the extending portion 18 a, and the extending portion 18 a is placed in the pocket 31 formed by the paper bag body 2 and the outer sleeve valve 4. To be inserted. 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.

  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 sheet 15 and the lower sheet 15a, the lower sheet 15a is folded first along the folding lines 17 and 17, the upper sheet 15 is folded on the upper sheet 15 and the upper sheet 15 is folded. And a paste is apply | coated and affixed on at least the oblique line parts 23 and 23a of the lower paper 15a. 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 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. 10) for preventing leakage of the granular material, and is further folded along a fold 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. As shown in FIGS. 6 to 9, the outer sleeve valve 4 is folded three times in order and closed, so that there are three folding portions 7. That is, three folding parts 7a, 7b, 7c are formed. The self-adhesive adhesive application surface 6 is provided on the reverse side of the folding portion 7a in FIG. 6, while the self-adhesive adhesive application surface 6 is provided on the front surface of the folding portion 7c in FIG.

  First, when the outer sleeve valve 4 of FIG. 6 is folded in the direction of the 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 folded portion 7a becomes the front. Furthermore, when the outer sleeve valve 4 of FIG. 7 is folded in the direction of the arrow C from the two-dot chain line 33, the state shown in FIG. 8 is obtained, and the self-adhesive adhesive application surface 6 of the fold 7a and the fold 7c. The outer sleeve valve 4 is closed by contacting and sticking to the self-adhesive adhesive application surface 6. When the outer sleeve valve 4 of FIG. 8 is folded in the direction of the arrow D from the two-dot chain line 33a, the state shown in FIG. 9 is obtained, and the folding sticking part 34 where the folding parts 7a, 7b, 7c overlap is formed. 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 three times, but may be once, twice or four times or more.

  The self-adhesive adhesive of the self-adhesive adhesive application surface 6 is bonded only when the application surfaces are in contact with each other, and other multilayer paper-like parts and powder particles in the middle of filling are included. Even if it contacts the self-adhesive adhesive application surface 6, 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. 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 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 in which the outer sleeve valve 4 is opened and the decorative paper 18 is not pasted. Therefore, after storing the granular material inside the paper bag 1 with a valve by the customer, the granular material charging opening 5 side is folded in the opposite direction of the paper bag main body 4, and the self-adhesive adhesive application surface of the folding part 7a 6. The self-adhesive adhesive application surfaces 6 of the folding part 7c are brought into contact with each other and stuck together, and the outer sleeve valve 4 is closed. Further, after folding and inserting the folded portion 34 into the pocket 31, the decorative paper 18 is pasted thereon, and the folded portion 34 is wrapped and covered by the extended portion 18 a, and the pocket 31 is covered. The extending portion 18a is inserted into the inside.

  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 35 is attached to 18, the mouth portion 36 is formed in substantially the same configuration.

  Further, in the multilayer paper-like material 10 forming the paper bag body 2, a sealing band 37 that closes the mouth part 36 after the mouth part 36 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 37 in the multilayer paper-like material 10 of the paper bag main body 2 is as shown in FIG. 10, the bonding part 38 of the outer-layer paper-like materials 20 in the multilayer paper-like material 10, and the inner-layer paper-like. A space 40 is formed by shifting between the bonding portions 39 of the objects 21, and a gap 41 for accommodating the sealing band 37 is formed between the outer layer paper-like material 20 and the inner layer paper-like material 21 in the space 40. It is made by sticking. Therefore, when it is necessary to close the mouth part 36 after the paper bag body 2 is opened, the mouthband 37 stored in the multilayer paper-like material 10 is taken out and the mouth part 36 is bound by the mouthband 37. The mouth 36 can be closed, and the mouth 36 can be opened by opening the sealing band 37.

  Note that the sealing band 37 is not bulky because the sealing band 37 is accommodated in the accommodating portion that is the gap 41 by the adhering portions 42 and 43 between the outer layer paper 20 and the inner layer paper 21 in the space 40. 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, 7c Folding part 10 Multilayer paper Shaped object 11, a Paper tube 12, 12A, b Open end 12a, 12b Corner 13, 14, c, d Folded part 14a Top angle 14b Bottom edge 15, e Upper paper 15a, f Lower paper 16, g Expanded surface 17 , 22, i Folding line 18, j Decorative paper 18a Extension part 20 Outer layer paper 21 Inner layer paper 23, 23a Shaded part 30 Valve paper 31 Pocket 32, 33, 33a Two-dot chain line 34 Folding and sticking part 35 Cut tape 36, n mouth part 37, o sealing band 38, 39 pasting part 40 space 41 gap 42, 43 pasting part L inner surface m heating melt adhesive application surface

Claims (4)

The opening of the bag body configured with a multilayer sheet-like material, Rutotomoni attaching the outer sleeve valve which is formed by bending at the valve sheet, bonding the decorative paper having the extending portion on the opening side of the paper bag body The decorative paper is stuck on the fold sticking portion of the outer sleeve valve on the powder particle input opening side by extending the extension part, and the fold sticking is carried out at the extension part. A paper bag which encloses and covers the wearing portion and inserts the extending portion into a pocket formed by the paper bag main body and the outer sleeve valve, and the granular material is passed through the outer sleeve valve through the paper bag. The inside of the main body can be freely filled, and the granular material charging 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 to form one or more folding parts. A self-adhesive adhesive application surface is provided in the folding part. After filling the granular material, fold the granular material inlet opening side of the outer sleeve valve one or more times, and adhere the self-adhesive adhesive application surfaces of the one or more folding parts to each other. A paper bag with a valve, characterized in that a fold-up sticking portion is formed, and the powder-particle opening is closed by the fold-up sticking portion. Wherein the multilayer sheet-like material in forming the paper bag body, the bag body close mouth after opening the valve bag with claim 1, wherein the mouth sealing band housed in the axial direction of the paper bag 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. 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, claims 1 is any one selected from the group consisting of a hot melt of 3 A paper bag with a valve according to any one of the preceding claims.

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