JP2002002727A - Bag body for packaging - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve adaptability to an automatic machine without lowering protective properties for contents, appearance of a bag body for packaging, and productivity of the bag body. SOLUTION: A predetermined-length portion containing a twice-folded edge (right side edge) 12R of a bottom edge 12D, which is sealed with a bottom edge sealing belt 14D, is specified as a bottom edge non-seal portion 16, which is not adhered, whereby the bottom edge non-seal portion 16 containing the twice-folded edge can be maintained as a deaeration port in communication with the interior of the bag body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packing for packing the bottom edge sealed by a bottom edge sealing band from an upper edge opening, and for packaging the contents under heat sealing of the upper edge opening. The present invention relates to a bag, particularly a packaging bag in which at least one of right and left side edges has a half-folded edge formed by half-folding.

[0002]

2. Description of the Related Art For example, a bag for packaging containing various foods or the like is usually made of a laminated film having a sealant film layer arranged on the inner surface side of a predetermined base film or the like, from various films such as a joint seal, a three-way seal, and the like. The contents are commercialized, for example, by heat sealing the upper edge opening after filling the contents with the form of a bag having an upper edge opened by the sealing method described above.

[0003]

When the contents of the bag are filled and then the upper edge opening of the bag is sealed by heat sealing, a normal packaging operation except for special packaging such as a vacuum pack is performed. In this case, it is unavoidable to enclose air in the bag. However, since it is customary to store or transport multi-tiered packaging bags containing heavy items such as rice, the loading shape of this type of packaging bag is unstable. Encapsulation of air, which leads to chemical conversion, is not generally considered to be preferable.

Therefore, a so-called deaeration hole is generally provided in this type of bag for bleeding air sealed in the bag. As this kind of deaeration hole, a plurality of small holes provided on the front surface and the back surface of the packaging bag, or a gap hole formed by forming a part of the heat seal band as a non-sealing portion is generally used. Is known to.

[0005] However, in the former configuration in which a plurality of small holes are provided on the front and back surfaces of the packaging bag, since the small holes are always open, insects, water, or the like may enter through the small holes. It cannot be denied that the appearance of the printed surface provided on the front and back surfaces of the packaging bag is impaired.

On the other hand, the latter gap formed by the unsealed portion of the heat-sealing band can sufficiently suppress the invasion of insects, water, and the like, and is provided on the front and back surfaces of the packaging bag. The aesthetic appearance of the printing surface is also maintained.

Here, simply providing a non-seal portion in the heat-seal band does not allow the non-seal portion to expand, so that usually either the front surface or the back surface is slackened. The opening of the non-seal portion is facilitated. However, the work of providing such a slack in the non-sealed portion of the heat seal band is likely to be complicated, and the manufacturing process is inevitably complicated.

Further, if the non-seal portion has slack, it is inevitable that the thickness of the non-seal portion increases due to the slack.

In the case of an automatic machine such as an automatic wrapping machine, a specific number of wrapping bags are usually set in the feeding device in a stacked manner. In other words, when the thickness of the packaging bag is increased due to the looseness of the non-sealed portion, the number of sets of the packaging bag in the supply device necessarily decreases, and therefore, the packaging for the form in which the non-sealed portion has a slack is used. It cannot be denied that the bag is inferior in adaptability to automatic machines.

[0010] Further, if the packaging bags partially thickened due to the looseness of the non-seal portion are overlapped, instability of the loaded state is unavoidable, and in some cases, a problem in the supply process is caused. There is a fear.

That is, in the known construction, it is difficult to ensure high protection of the contents, aesthetics of the packaging bag, its productivity, adaptability to an automatic machine, etc., and either of them is sacrificed. It is not rare in many cases.

[0012] The present invention provides a packaging bag which can improve adaptability to an automatic machine without lowering the protection of the contents, the appearance of the packaging bag, and the productivity thereof. It is an object.

[0013]

In order to achieve this object, the present invention focuses on the fact that a half-folded edge formed by half-folding a packaging film has an easy-to-open property. are doing.

Therefore, according to one embodiment of the present invention, a predetermined length including a half-folded edge of the bottom edge sealed by the bottom edge seal band is replaced with a bottom without adhesion. By defining it as an edge non-seal portion, the bottom edge non-seal portion extending over the half-folded edge can be secured as a deaeration hole communicating with the inside of the bag body.

According to a second aspect of the present invention, the half-folded edge seal band extending over the half-folded edge is formed as a side edge seal band of at least one of the right and left side edges as the half-folded edge. , At least partially along the half-fold edge, of the bottom edge sealed by the bottom edge seal band,
A predetermined length including a half-folded edge is formed and defined as a non-adhesive bottom edge non-seal portion over the half-folded edge. Then, by providing a gap of a specific width between the lower end of the half-folded edge seal band and the bottom edge seal band, the bottom edge non-seal portion extending over the half-folded edge can be replaced with a half-folded edge seal band, a bottom edge seal band. It can be secured as a deaeration hole communicating with the inside of the bag through the gap between the bands.

Further, in another modified embodiment, the side edge separation seal band is provided intermittently along the half-folded edge at a position separated from the half-folded edge, so that the side edge-separated seal band is provided. A gap between the edge separation seal band and the half-folded edge is defined and formed as an air passage that can communicate with the inside of the bag body through a side edge non-seal portion between the intermittent side edge separation seal bands. And
Of the bottom edge sealed by the bottom edge sealing band, a predetermined length including a half-folded edge is defined as a non-adhesive bottom edge non-seal portion, hung over the half-folded edge, and defined continuously with the ventilation path, By forming, the bottom edge non-seal portion facing the half-folded edge can be secured as a deaeration hole communicating with the inside of the bag body.

According to a fourth aspect of the present invention, a half-folded edge seal band extending over a half-folded edge is formed as a half-folded side edge seal band of at least one of the left and right side edges. At least partially along the edge. Then, in a half-folded edge non-seal area without a half-folded edge seal band, at a position where at least one of the upper and lower ends is separated from the other seal band, a side edge separation seal band arranged to be separated from the half-folded edge is provided. The air passage extending over the half-folded edge defined between the half-folded edge and the side edge separation seal band is inserted into the bag body via a non-seal gap adjacent to the upper and lower ends of the side edge separation seal band. While allowing communication, a predetermined length of the bottom edge sealed by the bottom edge seal band, including the half-folded edge, is hanged on the half-folded edge as a non-adhesive bottom edge non-seal portion, and the air passage is By continuously defining and forming, the bottom edge unsealed portion facing the half-folded edge can be secured as a deaeration hole communicating with the inside of the bag body.

According to another embodiment of the present invention, a side edge separation seal band is provided intermittently along the half-folded edge at a position separated from the half-folded edge.
The space between the half-folded edge and the side edge separation seal band is defined as an air passage that can communicate with the inside of the bag body through a side edge non-seal portion between the side edge separation seal bands intermittently and intermittently. , Is formed. Then, a cut that can be a deaeration hole under the expansion is formed on this ventilation path so as to be able to communicate with the inside of the bag body.

Further, according to the sixth aspect of the present invention, the half-folded edge seal band extending over the half-folded edge is formed as a half-folded edge side edge seal band of at least one of the left and right side edges. Along at least a part thereof. Then, in a half-folded edge non-seal area without a half-folded edge seal band, at a position where at least one of the upper and lower ends is separated from another seal band,
A side edge separation seal band is provided so as to be separated from the half-folded edge. A notch that can communicate with the inside of the bag through a non-seal gap adjacent to the end and a cut that can become a deaeration hole under the expansion is formed on this ventilation path so that it can communicate with the inside of the bag. .

[0020]

Embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIG. 1, the packaging bag 10 according to the present invention has at least one of the left and right side edges 12L, 12R.
It is embodied as a form of a half-folded edge formed by half-folding of the laminated film, and by sealing the bottom edge 12D with a bottom edge seal band 14D made by heat sealing, it is formed into a bag form with an open upper edge 12U. ing.

This kind of packaging bag 10 is made of a heat-sealing packaging film, for example, a laminated film in which a sealant film layer is provided on the inner side of a base film made of polyethylene, polyamide (nylon) or the like. , Usually formed. As the packaging bag 10, for example, as shown in FIG. 1, a half-folded edge formed by half-folding a packaging film is disposed on a right edge 12R, and a left edge 12L and a bottom edge 12D opposite to each other. Are sealed by respective heat seals, that is, a left edge seal band 14L and a bottom edge seal band 14D.

It is to be noted that the two-side sealed packaging bag 1
0, that is, the two-sided sealing bag itself is known,
Since the basic form does not change in the present invention, a detailed description of the basic structure, the manufacturing process, and the like is omitted here.

Here, as can be seen from FIG. 2 in addition to FIG. 1, in one embodiment of the present invention, a half-folded edge of the bottom edge 12D sealed by the bottom edge seal band 14D. (Right edge) By defining the predetermined length L1 including the 12R as the bottom edge non-seal portion 16 without adhesion, the bottom edge non-seal portion extending over the half-folded edge is secured as a vent hole communicating with the inside of the bag body. It is possible.

Since the half-folded edge of the packaging film, such as the right edge 12R in this embodiment, generates an elastic repulsive force, a force that always tries to expand acts on this portion. I have. In other words, since the half-folded edge (right edge) 12R has an easy-to-expand performance, the portion including the half-folded edge (right edge) can be easily removed from the bottom edge seal band 1R at the bottom edge 12D.
If the bottom edge non-seal portion 16 in 4D is used, the bottom edge non-seal portion can be easily opened under pressure or the like inside the packaging bag 10.

Therefore, according to this configuration, deaeration via the bottom edge non-seal portion 16, that is, discharge of air from the inside of the bag body, can be easily ensured.

According to the invention, the bottom edge seal band is provided.
Of the bottom edge 12D sealed by 14D, a predetermined length L1 including a half-folded edge (right edge) 12R is attached to the bottom edge non-seal portion 1 without adhesion.
It is sufficient to define as 6, that is, it is sufficient to seal the bottom edge with the bottom edge seal band while leaving the predetermined length L1 including the half-folded edge (right edge), so that the production process can be reliably prevented from being complicated. .

In addition, since the bottom edge seal band 14D seals and expands the bottom edge non-seal portion 16 without adhesion, deaeration from the inside of the bag body can be secured, so that insects, water, etc. can sufficiently enter. In addition to the suppression, the aesthetic appearance of the printing surface applied to the base portion 18 of the bag body, that is, the front surface 18F and the back surface 18B of the packaging bag body can be reliably maintained. That is, according to the present invention, the protection of the contents, the aesthetic appearance of the packaging bag body 10, and the productivity thereof can be ensured with high reliability.

Further, according to the present invention, it is possible to ensure easy expansion of the bottom edge non-seal portion 16 without making it loose. In other words, the bottom edge unsealed part caused by the formation of slack
According to the present invention, the increase in the thickness of 16 is eliminated, so that it is possible to reliably prevent a partial excessive increase in thickness when the packaging bags 10 are stacked before filling the contents.

As described above, if an excessive increase in the thickness of the stacked packaging bags 10 is prevented, the number of sheets that can be set in a supply device such as an automatic packaging machine is inevitably increased. If this is the case, adaptability to automatic machines is easily improved and improved.

Then, without accompanying a partial increase in thickness,
Since the packaging bags 10 can be loaded, the loaded state is reliably stabilized. Therefore, also from this point, adaptability to an automatic machine is improved.

As described above, the deaeration hole formed by the bottom edge non-seal portion 16 formed over the half-folded edge (right edge) 12R solves all the problems of the conventional deaeration hole, and is therefore suitable for automatic machines. According to the present invention, the packaging bag 10 having high flexibility can be easily provided.

The bottom edge non-seal portion 16 provided on the bottom edge 12D of the packaging bag needs only to have a length capable of discharging air. It goes without saying that the length L1 of the seal portion is set to a length that makes it impossible for the contents such as rice to fall off.

Here, in the two-side seal type packaging bag 10 exemplified in FIG. 1, the left edge 12L is sealed by the left edge seal band 14L formed by heat sealing, while the right edge of the opposite edge is sealed. Since 12R is formed as a half-folded edge due to half-folding of the packaging film, its expanded shape due to the filling of the contents has a left edge side and a right edge like the shape of the upper edge 12U shown in FIG. It is easy to be different on the side.

However, the averaging and stabilization of the inflated shape in the two-side seal type packaging bag 10 having one of the left and right side edges 12L and 12R as a half-folded edge are shown in FIGS. 3 and 4, for example. As described above, the half-folded edge seal band 14R along the half-folded edge can be easily provided on the right-side edge as the half-folded edge as well as the left-side edge seal band 14L as the right-side seal band. .

In a modified example of the embodiment of the present invention shown in FIGS. 3 and 4, a half-folded edge seal band 14R that extends over a half-folded edge (right edge) 12R has a right-hand edge formed as a half-folded edge. The right edge seal band is provided along the half-folded edge. Then, a predetermined length L1 of the bottom edge 12D including the half-folded edge (right edge) 12R is defined as a bottom edge non-seal portion 16 without sealing and bonding by the bottom edge seal band 14D, and the right edge seal band is also defined. For example, the right end 1 of the lower end 14Ra of 14R and the bottom edge seal band
By providing a gap 20 of a specific width between the gap and 4 Da, a bottom edge unsealed portion extending over the half-folded edge is secured as a deaeration hole communicating with the inside of the bag body through a ventilation path formed by the gap. .

Even in such a configuration, when the internal air flows into the gap 20 between the right edge seal band 14R and the lower edge seal band 14D under the pressure of the bag body or the like, the half-folded edge (right edge) 12R
The bottom non-seal part 16 is easily expanded under the pressure, so it is easy to secure the exhaust through the gap that becomes the ventilation path and the deaeration hole formed by the expansion of the bottom non-seal part. it can.

[0038] Also in this configuration, the air discharge accompanying the pressurization in the bag body can be easily secured without providing the slack, so that the same effect as the above-mentioned configuration, that is, the problem of the conventional deaeration hole is obtained. Can be easily secured from the configuration shown in FIGS. 3 and 4 in which the packaging bag 10 having high adaptability to an automatic machine can be obtained.

As shown in FIG. 3, in this configuration, the right edge 12R, which is a half-fold edge, is also provided with a half-fold edge seal band (right edge seal band) similar to the side edge seal band 14L of the left edge 12L. ) 1
Since the 4R is provided, it is easy to average and stabilize the inflated shape of the packaging bag body 10 due to the filling of the contents.
Therefore, stability and the like of the mounting shape of the packaging bag 10 during transportation, storage, and the like can be easily ensured.

Here, in a modified example of the embodiment of the present invention shown in FIGS. 3 and 4, a half-folded edge sealing band 14R along a half-folded edge (right edge) 12R is provided with a half-folded edge. To form. However, the present invention is not limited to this, and FIGS.
For example, as in another modified example shown in FIG. 1, the right edge separation seal band 24R may be provided intermittently along the half edge at a position separated from the half edge (right edge) 12R.

In this configuration, the space between the half-folded edge (right edge) 12R and the right-edge separation seal band 24R is defined and formed as an air passage 26 extending over the half-folded edge. When the internal air flows into the air passage through the gap between the right-edge-separated seal bands 24R where the internal air is interrupted under pressure or the like, that is, through the side-edge non-seal portion 28, the air passage expands under the pressure. It can be opened. The bottom edge non-seal portion 16 serving as the non-seal portion in the bottom edge seal band 14D is formed by a half-folded edge (right edge) 12R.
The bottom edge non-seal portion is easily expanded under the pressure of air flowing into the air passage from the side edge non-seal portion 28. Since it is opened, the exhaust through the deaeration hole formed by the expansion of the bottom edge non-seal portion can be easily secured even in this configuration.

As can be seen from FIGS. 5 and 6,
In this configuration, the right edge separation seal band 24R is provided intermittently along the right edge 12R that is a half-folded edge. That is, since the right edge 12R is prevented from expanding as a half-folded edge by the right edge separation seal band 24R,
As in the configuration shown in FIG. 4, the inflated shape of the packaging bag body 10 can be reliably averaged and stabilized.

In this embodiment, the side edge non-seal portion 28 between the right side edge separation seal bands 24R is embodied and illustrated as a plurality of locations. However, since it is sufficient that the air inside the bag body can flow into the ventilation path 26, the airbag is not limited to a plurality of airbags.
May be provided.

Here, in the configuration shown in FIGS. 3 and 4, a half-folded edge seal band 14R is provided over the half-folded edge (right edge) 12R, and in the configuration shown in FIGS. A right edge separation seal band 24R is intermittently provided at a position separated from the edge (right edge). That is, in the above-described embodiment, the half-folded edge seal band 14R and the right-side edge separated seal band 24R are individually provided. However, the present invention is not limited to this.
As shown in FIG. 7, for example, a configuration may be adopted in which a half-folded edge seal band 14R and a right edge separated seal band 24R are provided side by side.

As can be seen from FIG. 7, in this configuration, the half-folded edge seal band 1 extending over the half-folded edge (right edge) 12R.
4R is partially provided along the half-folded edge. Then, in the half-folded edge non-seal area without the half-folded edge seal band 14R along the half-folded edge (right edge) 12R, at least one of the upper and lower ends 24Ra, 24Rb, for example, the upper end 24Ra is connected to another seal band. At the position separated from the lower end 14Ra of the half-folded edge seal band, a right edge separation seal band 24R spaced from the half-fold edge is provided, and is defined between the half-folded edge and the right edge separation seal band. In addition, the ventilation path 26 extending over the half-folded edge is formed inside the bag body through a non-seal gap adjacent to the upper and lower ends of the right-edge-separated seal band, that is, a gap 20 between the half-folded-edge seal band and the right-edge separated seal band. And a bottom edge non-seal portion 16 continuous with the ventilation path is provided on the bottom edge 12D over the half-folded edge.

In this embodiment, the lower end 24Rb of the right side edge separation seal band 24R is provided so as to overlap the lower edge seal band 14D.

In such a configuration, a portion between the half-folded edge (right edge) 12R and the right edge separation seal band 24R is defined as a ventilation path 26 facing the half-folded edge. And, this ventilation path 26, between the half-folded edge seal band 14R and the right edge separation seal band 24R, that is, the gap 20 between the lower end 14Ra of the half-fold edge seal band and the upper end 24Ra of the right edge separation seal band. Since the air passage can communicate with the inside of the bag through the bottom edge non-seal portion 16 along the half-folded edge (right edge) 12R, even in this configuration, Deaeration from the inside can be easily secured.

In the structure shown in FIG.
As the form in which Rb is hung on the lower edge seal band 14D, a right edge separation seal band 24R is embodied. However, the present invention is not limited to this. For example, as shown in FIG. 8, a right edge separation seal band 24R may be provided at a position where the lower end 24Rb is separated upward from the lower edge seal band 14D.

According to this configuration, the space between the lower end 24Rb of the right-edge sealing band and the right end 14Da of the lower-edge sealing band 14D also functions as a gap 20 through which air can flow. In addition, deaeration from the bottom of the bag can be easily and smoothly obtained.

In any of the above-described embodiments of the present invention, the bottom edge non-seal portion 16 formed by non-sealing at the bottom edge seal band 14D functions as a deaeration hole. However, it is sufficient if the air inside the packaging bag can be evacuated to the outside by utilizing the easy-expansion performance of the half-folded edge (right edge) 12R. However, the present invention is not limited to this. For example, the cut 30 provided on the ventilation path 26 may function as the deaeration hole.

For example, a configuration in which the cut 30 functions as a deaeration hole will be described with reference to FIGS. 9 and 10, in which the right edge separation seal band 24R is intermittently provided. As shown, in this embodiment, a half-folded edge (right edge) 12
Cuts 30 that can be deaerated holes are formed in advance on the ventilation path 26 between the R and the right edge separation seal band 24R, for example, at a plurality of locations on the ventilation path 26. The shape of the cuts 30 may be, for example, a substantially V shape as shown in the figure, and the cuts are usually formed at regular intervals.

In such a configuration in which the cuts 30 are formed on the ventilation path 26, the air inside the bag body flows into the ventilation path 26 between the half-folded edge (right edge) 12R and the right edge separation seal band 24R. ,
When the air flows through the side edge non-seal portion 28 between the right edge separation seal strips, the cut expands due to the pressure. Degassed.

In other words, by making the cuts 30 in the ventilation path 26, the form of the bottom edge sealing band 14D at the bottom edge 12D is not limited to the form shown in FIG. Regardless of the presence or absence of the bottom edge non-seal portion, this configuration can easily secure the packaging bag 10 from which the inside of the bag can be degassed.

According to this configuration, the form of the bottom edge sealing band 14D can be appropriately selected from either the form with or without the bottom edge non-seal portion 16, so that the policy of the contents or bag user, or It can be easily adjusted to the performance of the packaging machine to be used, and the adaptability of each can be further improved.

Although FIGS. 9 and 10 show an example in which the bottom edge non-seal portion 16 is not provided, the present invention is not limited to this, and the bottom edge non-seal portion and the cut 30 may be provided side by side. It goes without saying that it is good.

Further, the present invention is not limited to the form having only the right edge separation seal band 24R. For example, as shown in FIG.
The cut 30 may be provided in a form in which the right side edge separation seal band 24R and the half-folded edge seal band 14R are combined.

In the configuration shown in FIG. 11, a half-folded edge seal band 14R that extends over the half-folded edge (right edge) 12R is provided partially, for example, intermittently, along the half-folded edge. Half-folded edge non-seal area without edge seal band
24Ra, 24Rb, for example, a right edge separation seal band 24R spaced apart from a half-fold edge at a position where both are separated from other seal bands, that is, a half-fold edge seal band located above and below it.
Is provided. And this half-folded edge (right edge) 12R
And the right edge separation seal band 24R, the air passage 26 extending over the half-folded edge, the side edge separation seal band upper and lower ends 24Ra, 24R
Since it becomes possible to communicate with the inside of the bag body through the non-seal gap 20 adjacent to b, by forming a cut 30 which can be a deaeration hole on the ventilation path under the expansion, from the inside of the bag body Can be easily ensured.

Therefore, also in this configuration, the bag 10 for evacuating the inside of the bag can be easily obtained regardless of the presence or absence of the bottom edge non-sealed portion.

In the embodiment shown in FIG. 11,
A half-folded edge band 14R that extends over the half-folded edge (right edge) 12R is vertically divided and provided, and a right edge-separated seal band 24R is disposed in a half-folded-edge non-seal area formed by the division. However, the present invention is not limited to this. For example, as shown in FIG. 12, a half-folded edge seal band 14R that extends over a half-folded edge (right edge) 12R.
Is provided at a position along the half-folded edge and away from the bottom edge seal band 14D upward, and in a half-folded edge non-seal area between the half-folded edge seal band and the bottom edge seal band, At the position where the lower end 24Rb is overlapped with the bottom edge seal band, a right edge separation seal band 24R spaced from the half-fold edge is provided, and a half defined between the half-fold edge and the right edge separation seal band is provided. A cut 30 may be provided on the ventilation path 26 extending over the folding edge.

Further, the right edge separation seal band 24R needs to be provided along the half-folded edge (right edge) 12R at a position separated from the half-folded edge (right edge) 12R. The shape is not limited to this. For example, the right edge separation seal band may be formed in a divided shape vertically divided.

In the above-described embodiment, the shape of the cut 30 is embodied as a substantially V shape. However, the cut 30 is not limited to a substantially V-shape, as long as it has a shape capable of forming a deaeration hole under the expansion, and is not limited to a substantially V-shape. Various shapes such as a shape can be adopted as the shape of the cut.

In the embodiment of the present invention,
Although it is embodied as the two-sided sealing type packaging bag 10 having the right side edge 12R as a half-folded edge, any two-sided seal type packaging bag body with one of the right side edge and the left side edge 12L as a half-folded edge can be used. Needless to say, the left edge may be a half-folded edge because it is sufficient.

Further, the present invention provides a right edge 12R and a left edge 12L.
Since the present invention is applicable as long as at least one of the packaging bags has a half-folded edge, the present invention is not limited to the two-sided sealing packaging bag, and other types of packaging bags, for example, The present invention may be applied to a seal-type packaging bag, an envelope-type packaging bag, a gusset-type packaging bag, and the like.

Further, in the embodiment of the present invention,
The content is exemplified by rice, but is not limited thereto. For example, soil for gardening, fertilizer, etc., sand for pets,
The present invention may be applied to a bag for packaging other heavy items such as bait. In addition, not limited to these heavy goods, for example, processed foods, confectionery and other lightweight food packaging bags,
The present invention may be applied.

The embodiments described above are intended to explain the present invention, and do not limit the present invention in any way, and all modifications and alterations within the technical scope of the present invention are also included in the present invention. It goes without saying that it is included in the invention.

[0066]

As described above, according to the bag for packaging according to the present invention, the deaeration hole is formed by simply providing the bottom edge non-sealing portion that extends over the half-folded edge in the bottom edge seal band, or by half-folding. Since it can be formed only by providing a cut on the ventilation path extending over the edge, complication of the manufacturing process can be reliably prevented. And if it is a deaeration hole formed by expansion of the bottom edge non-seal part or expansion of the cut on the ventilation path, insects, water or the like can be sufficiently suppressed and applied to the bag base. Since the aesthetic appearance of the printed surface is also reliably maintained, the protective bag for the contents, the aesthetic appearance of the packaging bag, and the deaeration holes for ensuring high productivity can be easily secured by the packaging bag. .

Further, in the present invention, since the bottom edge non-seal portion can be easily opened without any slack, it is possible to prevent the packaging bag from being excessively thickened when loaded. Thereby, adaptability to an automatic machine is easily improved and improved.

Then, without a partial increase in thickness,
Since the packaging bags can be loaded, the loaded state is also reliably stabilized. Therefore, also from this point, adaptability to an automatic machine is improved.

According to the configuration in which the cut is provided on the ventilation path, the bag for degassing inside the bag can be easily secured regardless of the presence or absence of the bottom edge non-seal portion. The form of the edge seal band can be appropriately selected from either a form with or without a bottom edge non-seal portion. Therefore, it is possible to easily adapt to the contents, the policy of the bag user, or the performance of the packaging machine to be used, and the adaptability of each can be further improved.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a packaging bag according to an embodiment of the present invention.

FIG. 2 is a partially enlarged front view of a bottom portion of the packaging bag shown in FIG.

FIG. 3 is a schematic perspective view of a packaging bag according to a modified example of the present invention.

FIG. 4 is a partially enlarged front view of a bottom portion of the packaging bag shown in FIG. 3;

FIG. 5 is a schematic perspective view of a bottom portion of a packaging bag showing another modification of the present invention.

6 is a partially enlarged front view of a bottom portion of the packaging bag shown in FIG. 5;

FIG. 7 is a partially enlarged front view of a bottom portion of the packaging bag, showing a modified example of the packaging bag shown in FIG. 5;

FIG. 8 is a partially enlarged front view of a bottom portion of the packaging bag, showing another modification of the packaging bag shown in FIG. 5;

FIG. 9 is a schematic perspective view of a packaging bag according to another embodiment of the present invention.

10 is a partially enlarged front view of the bottom of the packaging bag shown in FIG. 9;

FIG. 11 is a partially enlarged front view of a bottom portion of the packaging bag, showing a modification of the packaging bag shown in FIG. 9;

FIG. 12 shows another modification of the packaging bag shown in FIG.
It is a partial enlarged front view of the bottom part of a packaging bag.

[Explanation of symbols]

 10 Packing bag 12R Right edge (half folded edge) 12D Bottom edge 14R Half folded edge seal band (right end seal band) 14D Bottom edge seal band 16 Bottom edge unsealed part 24R Right edge separated seal band 26 Ventilation path 28 side Edge non-seal part 30 notch

Claims (6)

[Claims] At least one of the left and right edges is a half-folded edge formed by half-folding, and the bottom edge is sealed with a bottom edge seal band formed by heat sealing to form a bag with an open upper edge. By defining a predetermined length including a half-folded edge of the bottom edge sealed by the bottom edge seal band as a bottom edge non-seal portion without adhesion, the half-folding of the packaged bag body is performed. The bottom edge non-seal part hanging on the edge,
A packaging bag body secured as a deaeration hole communicating with the inside of the bag body. 2. At least one of the left and right edges is a half-folded edge formed by half-folding, and the bottom edge is sealed with a bottom edge seal band formed by heat sealing to form a bag with an open upper edge. In the packaged bag body, the half-folded edge seal band extending over the half-folded edge is at least partially along the half-folded edge as a side edge seal band of at least one of the left and right side edges serving as the half-folded edge. A predetermined length including a half-folded edge of the bottom edge sealed by the bottom edge seal band is formed and defined as a non-adhesive bottom edge non-seal part by hanging over the half-folded edge. By providing a gap of a specific width between the lower end of the edge seal band and the bottom edge seal band, the bottom edge non-seal portion extending over the half-folded edge can be removed from the gap between the half-folded edge seal band and the bottom edge seal band. Characterized by being secured as a deaeration hole communicating with the inside of the bag body through Wearing bag. 3. A bag having an open upper edge by forming at least one of the left and right edges as a half-folded edge formed by half-folding and sealing the bottom edge with a bottom edge seal band formed by heat sealing. In the packaged bag body, the side edge separation seal band is provided intermittently along the half fold edge at a position separated from the half fold edge, so that the side edge separation seal band is provided between the half fold edge and the side edge separation seal band. Is defined and formed as an air passage that can communicate with the inside of the bag body through a side edge non-seal portion between side edge separation seal bands that intersects with the half-folded edge and is interrupted, and is sealed by the bottom edge seal band. A predetermined length of the bottom edge including the half-folded edge is defined and formed as a non-adhesive bottom edge unsealed portion by hanging the half-folded edge and continuously forming the airway. That the bottom non-seal part facing the inside was secured as a vent hole communicating with the inside of the bag. Packaging bag to be. 4. A bag having an open upper edge by forming at least one of the left and right edges as a half-fold edge formed by half-folding and sealing the bottom edge with a bottom edge seal band formed by heat sealing. In the packaged bag body, the half-folded edge seal band extending over the half-folded edge is at least partially along the half-folded edge as a side edge seal band of at least one of the left and right side edges serving as the half-folded edge. A side edge separation seal band is provided at a position where at least one of the upper and lower ends is separated from another seal band in a half-fold edge non-seal area without a half-fold edge seal band. The air passage extending over the half-folded edge defined between the half-folded edge and the side edge separation seal band is inserted into the bag body via a non-seal gap adjacent to the upper and lower ends of the side edge separation seal band. Bottom that allows communication and is sealed by a bottom edge seal band Of these, the predetermined length including the half-folded edge was faced to the half-folded edge by hanging it on the half-folded edge as a non-adhesive bottom edge non-seal portion, and continuously defining and forming it in the ventilation path. A packaging bag, wherein a bottom edge non-sealing portion is secured as a deaeration hole communicating with the inside of the bag. 5. A bag having an open upper edge by sealing at least one of the left and right edges with a half-fold edge formed by half-folding and sealing the bottom edge with a bottom edge seal band formed by heat sealing. In the packaged bag body, the side edge separation seal band is provided intermittently along the half fold edge at a position separated from the half fold edge, so that the side edge separation seal band is provided between the half fold edge and the side edge separation seal band. Is defined and formed as an air passage that can be communicated with the inside of the bag body through a side edge non-seal portion between side edge separation seal bands that intersect with the half-folded edge and intermittent,
A bag for packaging, characterized in that a cut that can become a deaeration hole under the expansion is formed on the ventilation path so as to be able to communicate with the inside of the bag. 6. A bag having an open upper edge by forming at least one of the left and right edges as a half-fold edge formed by half-folding and sealing the bottom edge with a bottom edge seal band formed by heat sealing. In the packaged bag body, the half-folded edge seal band extending over the half-folded edge is at least partially along the half-folded edge as a side edge seal band of at least one of the left and right side edges serving as the half-folded edge. A side edge separation seal band is provided at a position where at least one of the upper and lower ends is separated from another seal band in a half-fold edge non-seal area without a half-fold edge seal band. The air passage extending over the half-folded edge defined between the half-folded edge and the side edge separation seal band is inserted into the bag body via a non-seal gap adjacent to the upper and lower ends of the side edge separation seal band. Can communicate with each other and can become a deaerated hole under the expansion Cut a packaging bag, characterized in that formed in the communicable this venting path inside the bag.