JP6107351B2 - Packaging bag - Google Patents

Description

  The present invention is a packaging bag for storing liquids such as shampoos, rinses and detergents, and powders such as seasonings and instant coffee. The present invention relates to a packaging bag that can prevent leakage.

  Conventionally, as a packaging bag using a flexible sheet as a packaging material, pillow packaging that heat-sealed the bag upper part and the bag bottom part of the back-fitted body part, folded the sheet in two and the two sheets as the front sheet Overlap as opposed to the back sheet, and heat seal the side opposite to the side where the sheet is folded to make the seal side, and heat seal each of the remaining two sides facing each other Three-side seal packaging to make the seal side, and the front sheet and the back sheet that are separately molded are overlapped and faced, and the four sides of the left and right bag sides, the upper part of the bag, and the lower part of the bag are heat-sealed and sealed There are various types such as four-sided seal packaging with a side.

  Of these packaging bags, liquids such as shampoo, rinse, and detergent, seasonings, and powders such as instant coffee are filled and packaged. When used, the corners of the bag are cut open and opened. Packaging bags with three-side seals or four-side seals are often used for the purpose of pouring stored items from the spout. And in a packaging bag having a storage part with a storage space between the front sheet and the back sheet with a three-side seal or a four-side seal, some stored items can be removed without pouring all the stored items from the open spout. When left, there was a request to re-seal it easily so that the stored items would not leak out.

  As a packaging bag which answers such a request, for example, as shown in Patent Document 1, a convex article discharge path is formed with a constant passage width toward the upper part of the bag, and this is formed into a bag side part. The side portion of the stored item extraction path is provided with a seal thin plate having a sheet-like expanse that is heat-sealed between the front sheet and the rear sheet. There is a packaging bag in which sheet sheets are arranged in the bag width direction. In this packaging bag, the portion on the tip side where the opening portion of the stored item pouring path is to be separated from the seal thin plate can be separated, and a slit is cut in the seal thin plate near the side of the stored item pouring path. It is included.

  And in order to pour out the stored item, the tip side of the stored item pouring path is cut out to form a spout, and when resealing, the leading end side of the stored item pouring path is separated from the seal thin plate And then re-sealing so that the stored item pouring path is closed at the bent portion by inserting and hooking into the slit while bending the tip end portion (spout outlet side portion). It was. Similarly, Patent Documents 2 and 3 also devise a method of bending the stored item extraction path and passing the leading end portion of the stored item extraction path through the slit or latching it.

  Moreover, in the packaging bag which can be opened widely across the bag width direction at the bag upper part, the bag upper part side so that the stored item does not leak from the opening after opening, rather than the form in which the item pouring path is biased toward the bag side. There has also been proposed a contrivance that bends and maintains the bent state. For example, as disclosed in Patent Documents 4 to 7, a configuration has been proposed in which the bag side seal portions can be engaged with each other at portions facing each other when the bag is folded.

Microfilm of actual application No.59-193491 (open utility Showa 61-107741) JP 05-178356 A JP 2001-151250 A Utility Model Registration No. 3004090 JP 2006-199334 A JP 2006-240991 A JP 2012-148784 A

  By the way, a packaging bag filled with a storage item with a three-side seal or four-side seal packaging bag has a certain thickness, but has a substantially plate shape as a product form. Especially in the case of packaging bags filled with liquid, the stored items should have sufficient margin to allow the stored items to flow in the storage unit so that the liquid will not pop out when the bag is held and the opening operation is performed to remove one corner. Is generally filled. For this reason, in general retail stores and the like, they are arranged side by side on a product shelf and the like, and in that state, the flat plate shape is often obtained.

  The three-side seal and four-side seal packaging bags are often placed flat if they are not opened, and even if this type of packaging bag is provided with the above-mentioned re-sealable mechanism, the resealed packaging bag is placed on the shelf. There is a possibility to lay flat. However, the liquid or powder in the storage is attached to the edge of the spout as a residue.If the spout is placed flat with careless operation, the liquid or powder will flow from the spout to the shelf. The problem of moving and getting dirty occurs.

  Therefore, in view of the above circumstances, the present invention has an object to prevent the spout from being positioned on the surface side to be grounded when the three-side seal with the spout opened or the packaging bag of the four-side seal is placed on a flat surface. An object of the present invention is to provide a packaging bag that can be stably placed with the opened spout opening upward.

(Invention of Claim 1)
The present invention has been made in consideration of the above problems, and a storage portion is provided in which two flexible sheets face each other and a storage space therebetween is provided, and the sides of the two sheets are heat-sealed. A packaging bag of a three-side seal or a four-side seal, in which a spout forming scheduled portion is provided on one seal side of a pair of seal sides that are heat-sealed,
With the opposing direction of the set of seal side portions as the first direction, a folding portion that can be folded up of the storage portion is formed at two positions facing each other in the first direction of the storage portion,
The storage portion includes two self-supporting bottom forming portions between the planned folding portions and two self-standing bottom forming portions that are opposed to each other in the first direction and can be folded from the position of the planned folding portions. Provided from the fold-up part,
Folding maintaining means is provided on each of the seal side portions of the two fold-up portions adjacent to each other by the fold-up from the planned fold-up portion so as to be releasably locked by the fold-up.
The folded state of the storage portion is maintained by the engagement of the two bending maintaining means, the storage portion with the spout forming scheduled portion on the one seal side being the upper side and the self-supporting bottom forming portion as the bag bottom The present invention provides a packaging bag characterized by having a configuration capable of supporting itself to solve the above-mentioned problems.

(Invention of Claim 2)
And according to this invention, each said bending maintenance means can be a locking piece which mutually engages and can be engaged and disengaged.

(Invention of Claim 3)
Further, according to the present invention, one of the bending maintaining means among the bending maintaining means is a locking opening formed by cutting a seal side, and the other bending maintaining means is connected to the locking opening. The locking piece can be inserted and locked.

(Effect of the invention of claim 1)
According to the first aspect of the present invention, the storage portion has a self-supporting bottom portion forming portion, and the self-supporting bottom portion forming portion is interposed between the self-supporting bottom portion forming portion and the folding portion continuous via the planned folding portion. By fold-up, the spout forming portion on the seal side of one fold-up portion, or the spout at the spout formation planned portion if it has been opened, is positioned in the folded-up direction. become.

  Then, by locking the folding maintenance means of the two raised portions, the folded state of the folded portion is maintained, and the spout forming scheduled portion or the unsealed spout is removed from the sheet of the bottom forming portion for self-standing. Positioned at a remote location. Furthermore, it is possible to self-support the folded storage portion with the bottom forming portion for self-standing as the bottom and the spout forming planned portion (the spout formed at the position of the spout forming planned portion if opened) at the top. Even if the spout is opened, the spout does not come into contact with the surface on which the bag is placed, and the contents attached to the edge of the spout do not move to the surface on which the bag is placed. Therefore, the problem of soiling the surface on which the bag is placed can be solved.

(Effect of the invention of claim 2)
According to the second aspect of the present invention, the shape of the bending maintaining means becomes a simple shape such as a locking piece, and the bending maintaining means can be simplified by performing a cutting process or a punching process on the seal side portion. Create and do not raise the manufacturing cost of packaging bags.

(Effect of the invention of claim 3)
Further, according to the invention of claim 3, the shape of the bending maintaining means is simple such as the locking piece and the locking port, and the bending maintenance is performed by performing the cutting process or the punching process on the seal side portion. Means are simply created and the manufacturing cost of the packaging bag is not increased.

It is explanatory drawing which shows embodiment of the packaging bag which concerns on this invention in the state of flat placement. It is explanatory drawing which shows the self-supporting form which latched the bending maintenance means. It is explanatory drawing which shows embodiment which made the bending maintenance means the locking piece and the locking port in the state of flat placement. Further, another modification is shown, in which (a) is an explanatory view showing a self-standing form in which the second folded portion is folded at a substantially right angle, and (b) is a spout at the second folded portion. Explanatory drawing which shows the self-supporting form in the formed packaging bag, (c) is explanatory drawing which shows the self-supporting form by which the 2nd raising part is bent in the middle position.

(First embodiment)
Next, the present invention will be described in detail based on the embodiment shown in FIGS. 1 to 3 show a first embodiment, and a packaging bag 1 has a front sheet 2 and a back sheet 3 which are two flexible sheets facing each other, and a liquid or powder in a storage space therebetween. It has the accommodating part 4 which accommodates. The outer shape of the packaging bag 1 in this embodiment is a substantially rectangular shape that is long in one direction when viewed from one sheet side, and is a four-side sealed package that is a thin plate-like seal side that is heat-sealed on the four sides. It is a bag.

  In the present embodiment, the bag long side direction is defined as the first direction X, and a pair of seal sides opposed in the first direction X are defined as the first side portion 5 and the second side portion 6, and are orthogonal to the first direction X. A pair of seal sides facing each other in the second direction Y (the bag short side direction) are referred to as a third side 7 and a fourth side 8. And the spout formation which is the one end part side (3rd side part side) in the 1st side part 5 so that it might become one corner of the accommodating part 4, and it hung from the 1st side part 5 to the 3rd side part 7 Half-cut processing in which the planned portion 9 is provided and the cut along the spout formation portion 9 can be performed by a tearing operation from the cut at the end of the first side portion 5 is the spout formation planned portion 9. It is given to.

  In the packaging bag 1, the first side portion 5 side portion and the second side portion 6 side portion of the storage portion 4 are folded up from a substantially flat plate-like state that can be laid flat. It can be transformed into a self-supporting state in which the folded portion is kept folded while the substantially center portion is the bottom of the bag, and thereby placing the self-supporting packaging bag 1 on a flat surface or the like. It is something that can be done.

  First, in the packaging bag 1, the planned folding portions 10 are provided at two positions facing each other in the first direction X in the storage portion 4, and each of the planned folding portions 10 is in the short side direction of the storage portion 4, that is, The second direction Y is provided. Further, in the vicinity of the end of each of the planned bending portions 10, a folding assist is formed by extending a seal portion from the third side portion 7 and the fourth side portion 8 toward the center side of the storage portion 4. A portion 11 is provided to facilitate folding the storage portion 4 along the seal boundary (boundary portion in the second direction Y) of the bending auxiliary portion 11.

  In addition, the storage portion 4 has a self-supporting bottom forming portion 12 between the two bending planned portions 10, and the self-supporting bottom forming portion 12 is an area that is not bent. A region continuous through the planned bending portion 10 on the first side portion 5 side of the self-supporting bottom portion forming portion 12 is a first folding portion 13, and the planned bending portion 10 on the first side portion 5 side. It is a part which can be folded up from the position from the position of the fold, and can be turned toward the front sheet 2 side in the self-supporting bottom forming part 12. Similarly, the continuous region via the planned bending portion 10 on the second side 6 side of the self-supporting bottom forming portion 12 is a second folding portion 14, and the planned bending portion on the second side 6 side. 10 can be folded from the planned bending portion 10 with the position of 10 as a fold source, and can be rotated toward the front seat 2 side of the self-supporting bottom forming portion 12. Each of the first folded portion 13 and the second folded portion 14 is not limited in the direction in which it can be folded, and can also be rotated toward the back sheet 3 side of the self-supporting bottom forming portion 12. However, in order to transform the storage part 4 into a shape that can stand by itself, the folding direction is unified to either the front sheet 2 side or the back sheet 3 side of the bottom part forming part 12 for self-supporting. To.

  The first side 5 at the first folded portion 13 and the second side 6 at the second folded portion 14, that is, the first side 5 and the second side facing each other in the first direction X. The portion 6 is a portion that comes into contact when the first and second folded portions 13 and 14 are folded and rotated in the direction overlapping the self-supporting bottom portion forming portion 12 and are brought close to each other. Bending maintenance means 15 and 16 are provided so that the folded state of the one folded portion 13 and the second folded portion 14 is maintained.

  The folding maintaining means 15 and 16 are opposed to each other by the above-described folding, and the first folding-up portion 13 and the second folding-up portion 14 are brought into a folded-up state by engaging each other so as to be detachable. It keeps and the function which maintains the storage part 4 in the shape which can become independent is carried out. Specifically, the bending maintaining means 15 provided on the first side portion 5 is directed to the side of the first side portion 5 opposite to the above-described spout formation portion 9 toward the spout formation portion 9. The locking piece 15a is formed into a thin plate by punching out the sealing side portion of the first side portion 5 that is a sealing thin plate.

  The other bending maintaining means 16 is a locking piece 16a that is convex toward the fourth side 8 side at the portion of the second side 6 that becomes the third side 7 side, and the locking piece 15a. In the same manner as this, the locking piece 16a is formed into a thin plate by punching out the seal side portion that is formed as a thin seal plate on the second side portion 6.

  In this packaging bag 1, after opening the spout formation scheduled portion 9 and dispensing a desired amount, the first and second folded portions 13 and 14 are folded and the storage portion 4 is folded in a triangular shape. By doing so, it can be placed on a flat part, and the spout a obtained by opening can also be prevented from contacting the surface of the flat part. In order to do so, after folding the first and second folding portions 13 and 14, the corresponding locking pieces 15 a and locking pieces 16 a may be locked. The folded state of the first and second folded portions 13 and 14 is maintained, the spout (the spout formation scheduled portion 9 before opening) is directed upward, and the bottom for self-supporting as shown in FIG. The storage portion 4 can be self-supporting with the forming portion 12 as a bag bottom. Therefore, if the packaging bag 1 is placed on a flat surface as described above in this deformed state, the packaging bag 1 is in a stable state, and if there is an unsealed spout a, the spout is flat. Since there is no contact with the surface, there is no problem that the contents attached to the spout move to a flat surface and become dirty.

  Each of the bending maintaining means 15 and 16 does not need to be a locking piece. FIG. 3 shows a modification thereof. For example, the bending maintaining means 15 at the first side 5 is formed as a wedge-shaped locking piece 15b that protrudes upward, and the bending maintaining means 16 at the second side 6 is It is also possible to form a locking port 16b made of a slit that can be locked and detachable by inserting the locking piece 15b.

  The position in the first direction of the two planned bending portions 10 is not particularly limited as long as the two bending maintaining means 16 are locked and the storage portion 4 is in a self-supporting shape. . Further, each of the two folded portions 13 and 14 can be folded in the middle, and is not limited to the one folded in a substantially plate shape. Furthermore, the position of the spout formation scheduled portion 9 is provided on the first side 5 side in the above-described embodiment so that the spout is formed on one end side of the first side 5. A spout formation scheduled portion may be provided on the side portion 6 side. For example, FIG. 4 shows an example of deformation, in which the folded portion 14 with the second side portion 6 is folded so that it is substantially perpendicular to the self-supporting bottom forming portion 12 (a), The spout a can be formed at the second side portion 6 of the folded portion 14 that is folded at a substantially right angle (b), and further, the middle position of the folded portion 14 can be folded (c). is there.

  As shown in FIG. 1 and FIG. 3, the folding assisting portion 11 is provided to facilitate the folding of the storage portion 4 at the position of the planned bending portion 10, but as shown in FIG. The bottom pushing portion 17 and the front sheet 2 and the back sheet 3 of the folded portions 13, 14 are provided with a bracing portion 17 by embossing along the first direction X so as not to intersect the planned bending portion 10. In addition, the strength against folding in the first direction in the region where the muscle pushing portion 17 is located is improved, and it is easy to cause folding.

DESCRIPTION OF SYMBOLS 1 ... Packaging bag 2 ... Front sheet 3 ... Back sheet 4 ... Storage part 5 ... First side part 6 ... Second side part 7 ... Third side part 8 ... Fourth side part 9 ... Spout formation part 10 ... Fold Bending portion 11 ... Bending auxiliary portion 12 ... Self-supporting bottom forming portion 13 ... First folding portion 14 ... Second folding portion 15 ... Bending maintenance means 15a ... Locking piece 15b ... Locking piece 16 ... Bending maintenance means 16a ... locking piece 16b ... locking port 17 ... muscle pushing portion X ... first direction Y ... second direction a ... spout

Claims (3)

A three-side seal or four-side seal packaging bag in which two sides of a flexible sheet face each other and a storage portion with a storage space therebetween is provided, and the sides of the two sides of the sheet are heat-sealed. In the packaging bag in which the spout forming scheduled portion is provided on one seal side portion of the set of opposed seal sides,
With the opposing direction of the set of seal side portions as the first direction, a folding portion that can be folded up of the storage portion is formed at two positions facing each other in the first direction of the storage portion,
The storage portion includes two self-supporting bottom forming portions between the planned folding portions and two self-standing bottom forming portions that are opposed to each other in the first direction and can be folded from the position of the planned folding portions. Provided from the fold-up part,
Folding maintaining means is provided on each of the seal side portions of the two fold-up portions adjacent to each other by the fold-up from the planned fold-up portion so as to be releasably locked by the fold-up.
The folded state of the storage portion is maintained by the engagement of the two bending maintaining means, the storage portion with the spout forming scheduled portion on the one seal side being the upper side and the self-supporting bottom forming portion as the bag bottom A packaging bag characterized by having a configuration capable of supporting itself.   The packaging bag according to claim 1, wherein each of the bending maintaining means is a locking piece that is detachably locked with each other.   One of the bending maintaining means is a locking opening formed by cutting the seal side, and the other bending maintaining means can be inserted into the locking opening and locked. The packaging bag according to claim 1, which is a locking piece.

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