JP5995261B2 - Paper bag with outer valve - Google Patents

Description

  The present invention relates to a paper bag with an outer valve for storing granular materials derived from foods such as rice, wheat, corn starch and starch, feed, plastic resin, cement, lime, carbon black and the like. More specifically, there is no leakage of powder particles from the paper bag, good handling at the time of filling powder particles can be obtained, and after the filling, the outer valve is sealed, and then the outer valve is exposed. The present invention relates to a paper bag with an outer valve that can be sufficiently guarded without any problems.

  As a conventional paper bag with an outer valve, as shown in FIGS. 12 and 13, a paper tube 50 made of a paper material is flatly folded, and triangular folding portions 52 and 53 are formed at both corners of the open end 51 of the paper tube 50. At the same time, one of the upper paper 54 and the lower paper 55 of the paper tube 50 is opened to form a development surface 56, and a block paper piece 57, a valve 58, and an inner patch 59 are overlapped on the triangular folding portion 52 of the development surface 56. A pasting and pasting of the upper paper 54 and the lower paper 55 along the folding line 61 so as to close the opening 60 of the development surface 56 is known (see, for example, Patent Document 1).

  Further, one of the upper paper 54 and the lower paper 55 of the paper tube 50 is opened to form a development surface 56, and a block paper piece 57 is attached to the triangular folding portion 52 of the development surface 56, and further on the block paper piece 57. The valve 58 is affixed (see FIG. 14), the inner patch 59 is affixed on the valve 58 (see FIG. 15), and the upper paper 54 and the lower paper 55 are closed so as to close the opening 60 of the development surface 56. A paper bag with an outer valve is known which is folded along the folding line 61 and bonded together (see, for example, Patent Document 2).

  Further, one of the upper paper 54 and the lower paper 55 of the paper tube 50 is opened to form a development surface 56, and a valve 58 is attached to the triangular folding portion 52 of the development surface 56 (see FIG. 16). After attaching the inner patch 59 (see FIG. 17), the upper paper 54 and the lower paper 55 are folded and bonded along the folding line 61 so as to close the opening 60 of the development surface 56, and sealed on one end thereof. A paper bag with an outer valve is known in which an outer patch 63 having a stopper 62 is bonded (see FIG. 18) (see, for example, Patent Document 3).

JP 2003-26190 A JP 11-49184 A JP 2001-233353 A

  In the paper bag with an outer valve of Patent Document 1, a block paper piece 57, a valve 58, and an inner patch 59 are laminated in this order on the triangular folding portion 52 of the development surface 56 of the paper tube 50, and further the upper bag is placed thereon. Since the paper 54 and the lower paper 55 are folded and bonded along the folding line 61, there is a feature that there is no leakage of the granular material and the strength of the bottom is excellent. However, even if the valve 58 and the inner patch 59 are light, the bottom part tends to become hard due to the overlapping attachment including the block paper pieces 57, and good handling when filling the granular material as expected is achieved. After the filling is completed, the valve 58 is sealed. After the valve 58 is sealed, the space for accommodating the outer opening of the valve 58 is small and the exposed portion is large, which may cause inconvenience.

  Similarly to Patent Document 1, the paper bag with the outer valve of Patent Document 2 is attached to the triangular folding portion 52 of the paper tube 50 by overlapping the block paper piece 57, the valve 58, and the inner patch 59 in this order. Since the upper paper 54 and the lower paper 55 are folded along the folding line 61 and bonded together, it is excellent in that there is no leakage of powder particles and the strength of the bottom can be sufficiently expected. However, the bottom part tends to become hard due to the pasting of the block paper piece 57, the valve 58, and the inner patch 59, and there is a possibility that good handling at the time of filling the granular material as expected may not be obtained.

  Further, in the paper bag with an outer valve of Patent Document 3, a valve 58 and an inner patch 59 are attached to the triangular folding part 52 of the paper tube 50 in this order, and the upper paper 54 and the lower paper 55 are folded on the same. Since the outer patch 63 having the sealing portion 62 is further bonded thereto, the powder is not leaked and the strength of the bottom can be expected sufficiently. After sealing the valve 58, the valve 58 is sealed, the outer opening of the valve 58 is folded, and the sealing portion 62 of the outer patch 63 can be put on the valve 58 and attached. However, the bottom part tends to become hard due to the overlapping bonding of the valve 58, the inner patch 59, and the outer patch 63, and the satisfactory handling at the time of filling the granular material cannot be obtained as expected, and it is folded. Since the outer opening of the valve 58 is attached to the sealing portion 62 of the outer patch 63, the valve 58 is shortened, and there is a possibility that it is difficult to connect to the powder supply source when filling the powder. .

  Therefore, the object of the present invention is that there is no leakage of the granular material, it is possible to obtain a good handling at the time of filling the granular material, and after sealing the valve after the filling, without exposing the valve The object is to provide a paper bag with an outer valve that can be sufficiently guarded.

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 one open end side of the flat fold mashed paper-like tube, with a parallel folds and the open end with a predetermined width, I write folding corners of said open end to said fold The upper paper and the lower paper constituting the development surface having one side of the upper paper and the lower paper generated by the folding of the paper tube in the state along the crease and having triangular folding portions and openings at both sides and the center thereof. paper, a paper bag external valve comprising closing the said opening being Awa bonded folded on the opening side along two folding bars parallel to the fold line,
Two origami pieces (W1 <W2) having a width dimension (W2) wider than the width dimension (W1) between the two folding lines inside the bottom side of one of the triangular folding portions. The outer valve is formed by applying hot melt on the inner surface of the two origami pieces that are pasted with the opening side of the triangular folding portion directed toward the apex angle side of the triangular folding portion, and folding the cylindrical body. There has been stuck at the position protruding into the opening side from the bottom of the triangular folded portion, a space for housing the outer opening of the outer valve in the opening of the clamshell paper is formed A paper with an outer valve is provided.

The operation of the first problem solving means is as follows. That is, the outer valve diameter is arbitrarily smaller than the width dimension (W1) by the two origami pieces (W1 <W2) having a width dimension (W2) wider than the width dimension (W1) between the two folding lines. The size can be adjusted to match the diameter of the powder source. An external valve is connected to the supply source of the granular material, and the granular material is filled into the paper bag through the external valve. Prevents going outside through the perimeter. After completion of the filling of the granular material, the outer valve is sealed, and the charging opening is bent and inserted into the space formed in the folded paper piece from the folded paper piece and stored.

The paper bag with valve of the present invention has good handling at the time of filling the granular material, such as no leakage of the granular material, and the diameter of the outer valve can be matched with the diameter of the supply source of the granular material. After the filling is completed, the outer valve is sealed, and there is an effect that the outer valve can be sufficiently guarded without being exposed.
Moreover, in addition to the above effects, in the state where the opening side of the specific two origami piece is directed to the apex angle side of the triangular folding part, inside the triangular folding part of one of the triangular folding parts. After pasting, by attaching the specific outer valve in a state protruding from the bottom side of the triangular folding part to the opening side, the outer valve can be connected to the powder source very easily, and There is an effect of favorably maintaining the shielding state of the valve after filling the contents.
Further, by applying hot melt in advance to the inner surface of the outer valve of the present invention, there is an effect that the outer valve can be sealed very easily after the filling of the granular material.

It is a perspective view of the state where the paper bag with an outer valve indicated in Example 1 was developed. It is a perspective view which shows the manufacture state of the paper bag with an outer valve | bulb. It is a top view which shows the manufacture state of the paper bag with an outer valve | bulb. It is a top view which shows the manufacture state of the paper bag with an outer valve | bulb. It is a top view which shows the manufacture state of the paper bag with an outer valve | bulb. It is a top view which shows the manufacture state of the paper bag with an outer valve | bulb. It is a top view which shows the manufacture state of the paper bag with an outer valve | bulb. It is a top view which shows the manufacture state of the paper bag with an outer valve | bulb. It is a perspective view which shows the use condition of the paper bag with an outer valve | bulb. It is a perspective view which shows the use condition of the paper bag with an outer valve | bulb. It is explanatory drawing which shows the shielding state after the contents filling in the bag of this invention. It is a top view which shows a prior art example. It is a top view which shows a prior art example. It is a top view which shows a prior art example. It is a top view which shows a prior art example. It is a perspective view which shows a prior art example. It is a top view which shows a prior art example. It is a perspective view which shows a prior art example.

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

In the drawings, 1 is a paper bag with an outer valve, and this outer bag-equipped paper bag 1 has a fold line 4 parallel to the opening end 3A at a predetermined width on one opening end 3A side of a paper tube 2 folded flat. The two corners C1 and C1 of the opening end 3A are folded up to the crease 4 and one of the upper paper 2a and the lower paper 2b generated by the collapse of the paper tube 2 in that state, that is, the upper paper 2a is turned into the crease 4. A development surface 8 having triangular folding portions 5, 6 and an opening 7 is formed on both sides and the center thereof, and the upper paper 2 a and the lower paper 2 b constituting the development surface 8 are parallel to the crease 4. A paper bag 10 that is folded and bonded to the opening 7 side along the two folding lines 9 and 9 and closes the opening 7. When the opening 7 is closed by the upper paper 2a and the lower paper 2b, One of the folding parts 5 and 6 (hereinafter referred to as “triangular folding part 5”) is 2 The folded origami piece 11 (W1 <W2) having a width dimension (W2) wider than the width dimension (W1) between the creases 9 and 9, and the apex angle 5a of the triangular folding part 5 on the opening 11a side thereof. The outer valve 12 is affixed to the side of the folded paper piece 11, and the outer bulb 12 is folded on the folded paper piece 11. The outer opening of the outer valve 12 is opened from the opening 11a into the space inside the folded paper piece 11. it is intended to accommodate the 12a.

  The paper tube 2 is selected to have an arbitrary diameter and length according to the purpose of use. In this embodiment, two sheets are used, but the present invention is not limited to this. Multiple layers are also acceptable. The material is not limited to kraft paper, and is not particularly limited as long as it has a deaeration property and has a predetermined strength, and a resin sheet, a resin sheet affixed to a paper, or the like is used.

As shown in FIG. 2, the bi-fold paper piece 11 is formed by folding a rectangular paper in half, and an adhesive paste 20 is applied to both outer side surfaces in a folded state. The folded paper piece 11 has a bottom 5b of the triangular folding portion 5, that is, one open end 3A of the paper tube 2.
Further, it is attached to the position slightly inside toward the apex angle 5a side by the adhesive glue 20 with the opening 11a facing the apex angle 5a side. Therefore, the folded paper piece 11 has a width dimension (W2) wider (W1 <W2) than a width dimension (W1) between the two folding lines 9, 9, and along these folding lines 9, 9. Since the upper paper 2a and the lower paper 2b are folded and bonded to the opening 7 side, and finally the bottom part of the paper bag 10 is formed, the contents pass through these two folding lines 9, 9. without granular material from leaking, further, the bi-fold paper 11, a pocket-like space next to having an opening 11a, house the outer opening 12a of the outer valve 12 into this space.

  As shown in FIG. 2, the outer bulb 12 is formed by sticking both ends of rectangular paper to form a cylindrical body, and then folding the cylindrical body. A hot melt 21 is applied to the inner surface of the outer valve 12. It will be. This outer valve 12 is overlaid on the above-mentioned bi-fold paper piece 11 and pasted by the pasting glue 20. The outer valve 12 protrudes from the bottom 5b of the triangular folding part 5 of the paper tube 2 toward the opening 7 side. 6, 7, 9 and 10, the protrusion of the outer valve is indicated by X. Since the outer opening 12a of the outer bulb 12 extends to the apex angle 5a of the triangular folding part 5, the apex angle 5a is close to the apex 5a side at least beyond the intersection of the hypotenuse 5c of the triangular folding part 5 and the folding line 9. The other end 12b extends to the opening 7, and the outer opening 12a of the outer valve 12 can be smoothly connected to the powder source, and the powder is attached to the paper bag. 10 can be filled smoothly. When the filling of the granular material is completed, the outer valve 12 can be immediately sealed by heating the hot melt 21 on the inner surface of the outer valve 12 with a hot melt sealer or the like.

  The other end portion 12b of the outer valve 12 is a single-layer body obtained by folding a cylindrical body, whereas the triangular folding portion 5 is configured by two layers or multiple layers. Therefore, the other end portion 12b of the outer valve 12 is soft, while the triangular folding portion 5 is hard and lacks flexibility. Therefore, when the internal pressure contained in the bag is applied to the outer valve 12 after filling the contents, the valve 12 protrudes from the bottom 5b of the triangular folding part 5, and the protruding part is soft and easily shielded. Since the triangular folding part 5 is hard and lacks flexibility, the shielding state becomes more firm and the shielding state of the valve can be maintained. FIG. 11 is an explanatory diagram for illustrating a shielding state after filling the contents.

  The folded paper piece 11 has a width dimension (W2) wider than the width dimension (W1) between the folding lines 9 and 9 (W1 <W2). The inner granular material prevents leakage. Therefore, the folding diameter width R of the outer valve 12 does not need to match the width dimension (W1), and the folding diameter width R only needs to be the width dimension W1 or less (R ≦ W1). It is possible to adapt to the supply source. The folding diameter width R of the outer valve 12 is not the diameter when the outer valve 12 is formed into a cylindrical shape, but the folding diameter width when the outer valve 12 is folded.

The outer valved paper bag 1 having the above-described configuration is manufactured as follows.
First, for the two or more paper-like cylinders 2, the diameter and length are arbitrarily selected according to the intended use. Then, as shown in FIG. 3, the selected paper tube 2 is collapsed, and a crease 4 parallel to the opening end 3A is attached to the one opening end 3A side of the folded paper tube 2 with a predetermined width. The other opening end 3B side is also provided with a fold line 4A parallel to the opening end 3B with a predetermined width. The two corners C1 and C1 of the opening end 3A of the paper tube 2 are folded up to the crease 4 as indicated by a two-dot chain line. Similarly, both corners C2 and C2 of the open end 3B of the paper tube 2 are folded up to the crease 4A as shown by a two-dot chain line in FIG.

  Next, in the state in which both corners C1 and C1 of the paper tube 2 are folded up to the crease 4 shown by a two-dot chain line in FIG. 3, the upper paper 2a and the lower paper 2b generated by the folding of the paper tube 2 The paper 2a is opened along the crease 4 to form a development surface 8 having triangular folding portions 5 and 6 and an opening 7 on both sides and the center thereof. Further, two folding lines 9 and 9 parallel to the crease 4 are attached to the development surface 8.

  Similarly, the upper paper 2c and the lower paper 2d generated by the folding of the paper tube 2 in the state where both corners C2 and C2 of the paper tube 2 are folded up to the crease 4A indicated by the two-dot chain line in FIG. 2c is opened along the crease 4A to form a development surface 8A having triangular folds 5A, 6A and an opening 7A on both sides and the center thereof. Further, two folding lines 9A, 9A parallel to the crease 4A are attached to the development surface 8A.

  Further, as shown in FIG. 5, the two folded paper pieces 11 are pasted on the hatched portion of the triangular folding part 5 in FIG. 4 with the opening 11 a side facing the apex angle 5 a side of the triangular folding part 5. Affix with the glue 20.

  Then, as shown in FIG. 6, the outer valve 12 is pasted on the bi-folded paper piece 11 by an adhesive glue 20 for the bi-folded paper piece 11.

  As shown in FIG. 7, among the upper paper 2 a and the lower paper 2 b constituting the development surface 8 of the folded paper tube 2, the upper paper 2 a is folded along the folding line 9 toward the opening 7 and bonded together. After that, the lower paper 2b is folded along the folding line 9 to the opening 7 side and bonded together to close the opening 7. Similarly, out of the upper paper 2c and the lower paper 2d constituting the development surface 8A of the folded paper tube 2, the upper paper 2c is folded and bonded to the opening 7A along the folding line 9A, and then the lower paper The paper 2d is folded along the folding line 9A toward the opening 7A and bonded together to close the opening 7A.

  As shown in FIG. 8, a decorative paper 22 is attached to the bottom side of the paper bag 10 on which the outer valve 12 is provided to protect the bottom. On the other hand, the decorative paper 23 is affixed to the other bottom side of the paper bag 10 to protect the bottom, and the decorative paper 23 is provided with a cut tape 24 and cuts 25, 26. 26, the cut tape 24 can be grasped with fingers, and the decorative paper 23 can be easily torn, and the bottom of the paper bag 10 can be opened to easily use the granular material as the contents. ing.

The outer bag-equipped paper bag 1 configured as described above is used as follows.
First, a powder source is connected to the outer opening 12a of the outer valve 12 of the paper bag 1 with the outer valve 1, and the powder is filled together with air into the paper bag 10 through the outer valve 12. When the air escapes from the wall surface of the paper bag 10 and only the granular material is accumulated in the paper bag 10 and is filled, the filling is stopped and the hot melt 21 on the inner surface of the outer valve 12 is heated by a hot melt sealer or the like. The valve 12 can be sealed. After that, if the outer opening 12a of the outer valve 12 is bent, and it is inserted into the folded paper piece 11 from the opening 11a of the folded paper piece 11, it is stored in the paper bag 1 with the outer valve filled with powder. It can be put in circulation.

  When it is desired to use the granular material filled in the paper bag with the outer valve, the decorative paper 23 on the other bottom side of the paper bag with the outer valve 1 is inserted into the cut tape 24 by fingers 25 and 26 with fingers. By grasping and tearing, the bottom is bare, the upper paper 2c and the lower paper 2d are peeled off, the opening 7A is opened, and the granular material is taken out and used.

  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 an outer valve of the present invention can obtain good handling at the time of filling the granular material even though there is no leakage of the granular material, and after sealing the outer valve after the filling, When you want to guard well without exposing it, the applicability becomes extremely high.

DESCRIPTION OF SYMBOLS 1 Paper bag with an outer valve 2 Paper-like cylinder 2a, 2c Upper paper 2b, 2d Lower paper 3A One opening end 3B The other opening end 4, 4A Folding 5, 5A, 6, 6A Triangular folding part 5a Vertical angle 5b Bottom side 5c Diagonal side 7, 7A Opening 8, 8A Development surface 9, 9A Folding line 10 Paper bag 11 Bi-fold paper piece 11a Opening 12 Outer valve 12a Outer opening 12b Other end 20 Adhesive glue 21 Hot melt 22, 23 Cosmetic paper 24 Cut tape 25 , 26 Cut C1, C2 Square X Projection of outer valve R Folding width of outer valve W1 Width between folding bars W2 Width of two origami pieces

Claims (1)

The one open end side of the flat folding mashed paper-like tube, the open end and parallel folds with a predetermined width, folding of the paper-like tube while he folded write do the corners of the open end to the fold One of the upper paper and the lower paper generated by crushing is opened along the crease, and the upper paper and the lower paper constituting the development surface having the triangular folding portion and the opening at both sides and the center thereof are parallel to the fold. a paper bag external valve comprising closing the said opening being Awa bonded folded on the opening side along two folding bars,
Two origami pieces (W1 <W2) having a width dimension (W2) wider than the width dimension (W1) between the two folding lines inside the bottom side of one of the triangular folding portions. The outer valve is formed by applying hot melt on the inner surface of the two origami pieces that are pasted with the opening side of the triangular folding portion directed toward the apex angle side of the triangular folding portion, and folding the cylindrical body. There has been stuck at the position protruding into the opening side from the bottom of the triangular folded portion, a space for housing the outer opening of the outer valve in the opening of the clamshell paper is formed A paper bag with an outer valve.