JP2010269808A - Packaging bag with handle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging bag with a handle, the bag being configured so that a handle portion is prevented from tearing or being firmly pressed against a handle even in case of heavy contents, excellent design the same as a packaging bag with no handles is imparted, and manufacturing cost is reduced without increasing the number of manufacturing processes. <P>SOLUTION: The rectangular packaging bag having heat seals along at least two opposite edges of front and back films 1 and 2. In the packaging bag, a second heat seal 5 is located near and inside one edge 4 perpendicular to the two opposite edges and divides the inner space of the bag into an upper space 6 on the one edge side and a lower space 7 on the opposite side. This second heat seal 5 includes a lateral seal 52 extending parallel to the one edge 4, and a pair of vertical seals 5, right and left, extending perpendicular to or oblique to the one edge 4. On the back of the bag, a linear opening 8 communicating with the upper space 6 and enabling insertion of a finger is formed parallel to the edge 4 and across an area sandwiched by the pair of vertical seals 51, right and left. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a packaging bag with a handle, and more particularly to a packaging bag with a handle that can be used as a packaging bag for heavy objects such as a rice bag, because the handle portion is not easily torn.

Conventionally, a rice bag is large and heavy, but no handle is provided. Therefore, a rice bag alone is very difficult to carry, and it is necessary to prepare another bag for easy carrying.
In view of such a problem, a packaging bag in which a substantially elliptical opening serving as a handle is provided at the upper part of the bag has been proposed (for example, see Patent Document 1 below).
Such a packaging bag is very useful because it is easy to carry and eliminates the need to use a separate bag because it can be held and carried by inserting a finger into the opening. It is.

However, there are many problems in such a conventional packaging bag with a handle.
First, since a packaging bag such as a rice bag is usually formed from a thin synthetic resin film, in the case of a packaging bag having a large content weight (for example, a 5 to 10 kg rice bag), there is an opening that becomes a handle when carrying it. There was a risk of tearing due to weight. Furthermore, there is a problem that the film on the upper part of the handle bites into the hand and hurts during carrying.
In addition, since the opening is visible from the front side and the back side, and characters and designs cannot be printed on the opening, the design is greatly reduced compared to packaging bags that do not have an opening. There was a problem to do.
Furthermore, since a punching process for providing an opening is separately required at the time of manufacture, there is a problem that the number of processes is increased and the manufacturing cost is increased as compared with a packaging bag without an opening.

Japanese Patent Laid-Open No. 9-2487

  The present invention has been made to solve the problems of the conventional packaging bag with a handle as described above, and even when the weight of the contents is large, the handle portion is torn or bites into the hand. In addition, packaging with a handle that can give the same excellent design as a packaging bag that does not have a handle and that can keep the manufacturing cost low without causing an increase in the number of steps during manufacturing. Provide a bag.

  The invention according to claim 1 is a rectangular packaging bag having a heat seal part along at least two opposing sides of the front film and the back film, and is in the vicinity of the inside of one side perpendicular to the opposing two sides. A second heat seal part that partitions the internal space of the bag into an upper space on one side and a lower space on the opposite side, the second heat seal part extending in parallel to the one side And a pair of left and right vertical seals extending perpendicularly or obliquely with respect to the one side, and a linear opening that allows communication with the upper space and allows insertion of fingers is formed on the back surface of the bag. The opening is formed in parallel with the one side and across a region sandwiched between the pair of left and right vertical seals.

  The invention according to claim 2 relates to the packaging bag with a handle according to claim 1, wherein a nonwoven fabric is interposed between the front film and the back film in the upper space.

  According to a third aspect of the present invention, the lateral seal portion is located outside the inner seal portion connecting the pair of left and right vertical seal portions below the opening and the pair of left and right vertical seal portions. The packaging bag with a handle according to claim 1, further comprising an outer seal portion extending.

  The invention according to claim 4 relates to the packaging bag with a handle according to claim 3, wherein the outer seal portion extends outward from an upper end portion of the longitudinal seal portion.

  The invention according to claim 5 is the packaging bag with handle according to claim 3, wherein the outer seal portion extends outward from a full length portion extending from an upper end portion to a lower end portion of the longitudinal seal portion. About.

  The invention according to claim 6 relates to the packaging bag with a handle according to claim 3, wherein the outer seal portion has a portion formed intermittently.

  The invention according to claim 7 relates to the packaging bag with a handle according to any one of claims 1 to 6, wherein the pair of left and right vertical seal portions extend to reach the one side.

  The invention according to claim 8 is characterized in that the transverse seal portion extends below the pair of left and right longitudinal seal portions below the opening and extends from the left side to the right side of the bag, The packaging bag with a handle according to claim 1, further comprising an outer seal portion extending outward of the pair of left and right vertical seal portions.

  The invention according to claim 9 is characterized in that a second opening communicating with the upper space is provided at a substantially central portion in the length direction of the one side. It relates to packaging bags with hands.

According to the first aspect of the present invention, when a finger is inserted into the opening serving as the handle, the finger enters the upper space inside the bag, so that when the packaging bag is carried, the force applied to the finger is directed to the upper space. It can be received on the inner surface of the back film. That is, the force applied to the film near the handle through the fingers can be received on a relatively wide surface. Therefore, even when the content is heavy, it is possible to prevent the film from being torn or biting into the hand.
In addition, since the opening is formed in a linear shape, it is difficult to visually recognize from the outside, and it is possible to print characters and designs on the front and back surfaces of the bag in the same manner as a packaging bag having no handle. Therefore, it is possible to impart an excellent design property equivalent to a packaging bag having no handle.
Furthermore, since a punching process for forming the opening is not required, the number of manufacturing steps does not increase to provide the opening, and the manufacturing cost can be kept low.

  According to the invention of claim 2, since the nonwoven fabric is interposed between the front film and the back film in the upper space, the strength of the handle is reinforced by the nonwoven fabric, and when the handle is gripped It becomes hard to feel pain because a soft non-woven fabric hits the fingers. Moreover, since the air inside the bag can be extracted from the non-woven fabric portion, the bag can be prevented from bursting when pressure is applied from the outside of the bag.

  According to the third aspect of the invention, the lateral seal portion has an inner seal portion that connects the pair of left and right vertical seal portions below the opening, and an outer side that extends outward from the pair of left and right vertical seal portions. Since the seal portion is included, the strength around the opening serving as the handle (left and right and below) is increased, and the handle is less likely to be damaged.

  According to the invention which concerns on Claim 4, since the outer side seal part is extended outward from the upper end part of the vertical direction seal part, the capacity | capacitance of downward space can be enlarged. Since the lower space is a space in which the contents can be stored, the amount of the contents that can be stored in the bag can be increased.

  According to the invention which concerns on Claim 5, since an outer side seal part is extended outward from the full length part ranging from the upper end part of a vertical direction seal part to a lower end part, a vertical direction seal part and a horizontal direction seal part are It prevents the contents (rice grains, etc.) from entering the corners. Moreover, the area of a 2nd heat seal part can be enlarged, and seal strength can be raised.

  According to the invention which concerns on Claim 6, since the outer side seal part has the part formed intermittently, the air inside a bag can be ventilated through the clearance gap between outer side seal parts.

  According to the seventh aspect of the present invention, since the pair of left and right vertical seal portions extend to reach the one side, the strength around the opening serving as the handle increases, and the handle is difficult to break. Become.

  According to the invention which concerns on Claim 8, a horizontal direction seal part extends below the pair of left and right vertical seal parts below the opening and extends from the left side to the right side of the bag, Since the outer seal portion that extends outward from the vertical seal portion is included, the contents (such as rice grains) are prevented from entering the corners formed by the vertical seal portion and the horizontal seal portion. . Moreover, it becomes easy to insert a finger into the opening serving as a handle.

  According to the invention according to claim 9, since the second opening that communicates with the inside of the bag is provided at the central portion in the length direction of one side, when the upper space is narrowed, from the linear opening The tip of the inserted finger can be exposed from the second opening. Therefore, the lower space can be widened, and the amount of contents that can be accommodated in the bag can be increased.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows 1st embodiment of the packaging bag with a handle which concerns on this invention, Comprising: (a) is a front view, (b) is a back view, (c) is A section sectional drawing, (d) is B section sectional FIG. It is a figure which shows the usage method of the packaging bag of 1st embodiment, Comprising: (a) is a back view, (b) is a figure corresponded in the B section cross section of FIG. It is a figure which shows 2nd embodiment of the packaging bag with a handle which concerns on this invention, Comprising: (a) is a reverse view, (b) is A section sectional drawing, (c) is B section sectional drawing. It is a figure which shows 3rd embodiment of the packaging bag with a handle which concerns on this invention, Comprising: (a) is a reverse view, (b) is A section sectional drawing, (c) is B section sectional drawing. It is a figure which shows 4th embodiment of the packaging bag with a handle which concerns on this invention, Comprising: (a) is a reverse view, (b) is A section sectional drawing, (c) is B section sectional drawing. It is a figure which shows 5th embodiment of the packaging bag with a handle which concerns on this invention, Comprising: (a) is a front view, (b) is a back view, (c) is A section sectional drawing, (d) is B section sectional FIG. It is a figure which shows 6th embodiment of the packaging bag with a handle which concerns on this invention, Comprising: (a) is a front view, (b) is a back view, (c) is A section sectional drawing, (d) is B section sectional FIG. It is a figure which shows 7th embodiment of the packaging bag with a handle concerning this invention, Comprising: (a) is a front view, (b) is a back view, (c) is A section sectional drawing, (d) is B section sectional FIG. It is a figure which shows 8th embodiment of the packaging bag with a handle which concerns on this invention, Comprising: (a) is a front view, (b) is a back view, (c) is A section sectional drawing, (d) is B section sectional FIG. It is a back view which shows the form which provided the 2nd opening part in the packaging bag which concerns on this invention. It is a back view which shows another form which provided the 2nd opening part in the packaging bag which concerns on this invention. It is a figure which shows the case where the two opposite sides in which the heat seal part was formed are the long sides of a bag. It is a figure explaining the angle | corner which the direction which a longitudinal direction seal part extends, and the direction which one side extends. It is a figure which shows the form which changed the angle | corner which the direction which a longitudinal direction seal part extends, and the direction which one side extends. It is a figure which shows the form which the connection part of a vertical direction seal part and a horizontal direction seal part had R.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of a packaging bag with a handle according to the invention (hereinafter sometimes simply referred to as a packaging bag or a bag) will be described with reference to the drawings.
FIG. 1 is a view showing a first embodiment of a packaging bag with a handle according to the present invention, in which (a) is a front view, (b) is a rear view, (c) is a cross-sectional view of part A, and (d) is a front view. It is B section sectional drawing.
The packaging bag with a handle according to the present invention is a rectangular packaging bag having a heat seal part (3) along at least two opposing sides of the front film (1) and the back film (2). In the heat seal part (3), the inner surfaces of the surface film (1) and the back film (2) are thermally bonded.

In the packaging bag of the first embodiment, the heat seal part (3) is formed along two opposite sides (left side and right side) of the front film (1) and the back film (2).
The other two sides (upper side and lower side) perpendicular to these two opposite sides are sides formed by folding back from the front surface to the back surface of the film (see FIGS. 1C and 1D). That is, the front film (1) and the back film (2) are formed from a single film.
In the present invention, the front surface and the back surface of the packaging bag are referred to as the back surface and the opposite surface as the surface on the side provided with the opening (8) described later, regardless of the pattern of the bag.

In all the embodiments of the present invention, as a film constituting the surface film (1) and the back film (2), a laminated film made of a synthetic resin having a multi-layer structure having a base material layer on the outer surface and a heat seal layer on the inner surface. Are preferably used.
As the material of the laminated film, nylon, polyethylene terephthalate (PET), biaxially stretched polypropylene (OP), kraft paper, rayon, etc. are preferably used as the base material layer, and polyethylene, linear chain as the heat seal layer. Low density polyethylene (LLDPE) or the like is preferably used, but not particularly limited thereto.
The number of layers of the laminated film is not particularly limited, and a film having any number of layers such as two layers, three layers, and four layers can be appropriately selected and used.
Specific examples of the laminated film include nylon / polyethylene and nylon / LLDPE as the two-layer film, nylon / deposited PET / polyethylene as the three-layer film, and rayon / sand polyethylene / nylon / as the four-layer film. A configuration called LLDPE can be given.

In the packaging bag of the first embodiment, a second heat seal portion (5) is formed in the vicinity (downward) of one side (4) perpendicular to the two opposite sides.
The second heat seal part (5) partitions the internal space of the packaging bag into an upper space (6) on one side (4) side and a lower space (7) on the opposite side. In the present specification, the expression of partitioning into an upper space and a lower space means that the contents of the bag cannot be moved from the lower space to the upper space, and the lower space and the upper space as in this embodiment. This includes both the case where the space is completely blocked and the case where the contents cannot move but the air can move, as in a sixth embodiment (see FIG. 7) described later.
In the present specification, the upper side is the side (4) side of the bag, the lower side is the side opposite to the side (4) of the bag, the outer side is the side away from the center of the bag, and the inner side is the center of the bag. Point to the approaching side.

  A linear opening (8) communicating with the upper space (6) is formed on the back surface of the packaging bag in parallel with one side (4). The opening (8) has a size (length) into which fingers can be inserted, and preferably has a size (for example, 100 to 150 mm) into which four fingers other than the thumb can be inserted. .

The second heat seal portion (5) includes a pair of left and right vertical seal portions (51) extending perpendicularly or obliquely with respect to one side (4), and a lateral seal portion extending parallel to one side (4) ( 52).
The horizontal seal portion (52) includes an inner seal portion (52a) that connects between the pair of left and right vertical seal portions (51) below the opening portion (8), and a pair of left and right vertical seal portions (51). And an outer seal portion (52b) extending outward.

The outer seal portion (52b) extends outward from the upper end portion of the vertical seal portion (51), and is formed so that the end portion reaches both the left and right sides of the bag.
The inner seal part (52a) is formed so as to connect the lower ends of the vertical seal part (51).

  More specifically, the opening (8) crosses the region (11) sandwiched between the pair of left and right vertical seal portions (51) on the back surface of the bag, more specifically, the pair of left and right vertical seal portions (51). And a lower seal portion (52a) so as to cross a region (11) surrounded on three sides (see FIG. 1 (b)).

In the upper space (6), a nonwoven fabric (9) is interposed between the front film (1) and the back film (2).
The nonwoven fabric (9) is interposed over the entire upper space (6) in the illustrated example, but may be interposed only in a part of the upper space (6). However, when interposing only in a part, it is necessary to interpose at least the linear opening (8) so as to extend from the left side to the right side of the bag.
In the heat seal part (3) and the second heat seal part (5) along the periphery of the upper space (6), the surface film (1) and the back film (2) are thermally bonded via the nonwoven fabric (9). . However, in the inner seal portion (52a), the nonwoven fabric (9) is not interposed between the surface film (1) and the back film (2), and the surface film (1) and the back film (2) are directly connected. Thermally bonded.

The packaging bag of the first embodiment is formed from a single film as described above. Specifically, it is formed by folding two parallel sides of one film so as to face each other with a slight gap (10).
The gap (10) is formed in a straight line from the left side of the bag to the right side at a position below the outer seal part (52b) and above the inner seal part (52a), and defines the region (11). Crossing.

The nonwoven fabric (9) is arranged so as to straddle the linear gap (10), and the gap (10) is thereby closed by the nonwoven fabric (9).
The gap (10) closed by the nonwoven fabric (9) acts as an air vent for discharging the air inside the bag to the outside and preventing the bag from bursting when an external force is applied to the containing bag.

The non-woven fabric (9) arranged so as to straddle the gap (10) is thermally bonded only to the back film (2) in the form of a band over the entire length of the gap in a constant width region across the gap (10). . (Hereinafter, the part thermally bonded only to the back film (2) is referred to as a third heat seal part, and is indicated by reference numeral (12) in the figure)
However, the nonwoven fabric (9) is not thermally bonded to the surface film (1) or the back film (2) below the gap (10) in the region (11) (the side opposite to the side (4)).
Thereby, a linear opening (8) communicating with the upper space (6) is formed in the region (11). That is, since the nonwoven fabric (9) is not thermally bonded to the film below the gap (10) in the area (11), the gap (10) in the area (11) is a linear shape into which fingers can be inserted. It becomes an opening (8).

2A and 2B are diagrams showing a method for using the packaging bag of the first embodiment, in which FIG. 2A is a rear view, and FIG.
In the packaging bag of the first embodiment, after the nonwoven fabric (9) is pulled out from the opening (8), a finger is inserted into the opening (8) so that the opening (8) becomes a handle and the packaging bag. Can be gripped.
At this time, the finger inserted into the opening (8) enters the upper space (6) inside the bag, so that the force applied to the finger can be received by the inner surface of the back film facing the upper space. That is, the force applied to the film near the handle through the fingers can be received on a relatively wide surface. Therefore, even when the content is heavy, it is possible to prevent the film from being torn or biting into the hand.
Moreover, since the nonwoven fabric (9) is interposed between the surface film (1) and the back film (2) in the upper space (6), the strength of the handle is reinforced and it is difficult to break. Further, when the handle is gripped, the soft non-woven fabric (9) hits the finger and becomes a cushion, so that it becomes difficult to feel pain.
In addition, although the usage method of the bag of embodiment mentioned later is the same as the case of 1st embodiment, in the case of the bag of embodiment which does not have a nonwoven fabric, the operation | movement which pulls out a nonwoven fabric becomes unnecessary.

The packaging bag of the first embodiment is superior to the conventional packaging bag with a handle as described in Patent Document 1 in terms of design and manufacturing cost.
That is, since the opening (8) is formed in a linear shape, the opening (8) is hardly visible from the outside, and it is possible to print characters and designs on the front and back surfaces of the bag. Excellent design properties equivalent to those of non-packaging bags can be imparted.
Furthermore, since a punching process for forming the opening is not required, the manufacturing cost can be kept low.

3A and 3B are diagrams showing a second embodiment of the packaging bag with a handle according to the present invention, in which FIG. 3A is a rear view, FIG. 3B is a cross-sectional view of A portion, and FIG.
The difference between the packaging bag of the second embodiment and the packaging bag of the first embodiment is that the nonwoven fabric (9) is not interposed in the upper space (6).
And since the nonwoven fabric (9) is not interposed, there is no third heat seal part (12) in which the nonwoven fabric (9) is thermally bonded only to the back film (2). Further, since the gap (10) cannot be closed by the nonwoven fabric (9), the linear gap (10) is closed by the outer seal portion (52b) of the second heat seal portion (5). However, since the gap (10) is formed so as to cross the area (11), the gap (10) is not blocked in the area (11).
Thereby, only the gap (10) in the region (11) becomes a linear opening (8) through which the finger can be inserted in communication with the upper space (6).
Since the packaging bag of the second embodiment is the same as the packaging bag of the first embodiment except for the above-described configuration, the same components are denoted by the same reference numerals and description thereof is omitted.

  The packaging bag of the second embodiment can obtain the same functions and effects as those of the packaging bag of the first embodiment except that strength reinforcement and cushioning properties by the nonwoven fabric (9) cannot be obtained. Moreover, not using a nonwoven fabric (9) is advantageous at the point that manufacturing cost can be restrained low compared with the packaging bag of 1st embodiment.

4A and 4B are diagrams showing a third embodiment of the packaging bag with a handle according to the present invention, in which FIG. 4A is a rear view, FIG. 4B is an A section sectional view, and FIG. 4C is a B section sectional view.
The packaging bag of the third embodiment is a so-called three-sided sealing bag in which a heat seal part (3) is formed along three sides of two films (a front film (1) and a back film (2)).
That is, in the packaging bag of the third embodiment, in addition to the two opposing sides of the front film (1) and the back film (2), one side (4) perpendicular to the two opposing sides is also heat-sealed. . The remaining side is open in the state shown in the figure, but is heat sealed later (for example, after the contents are filled).
In the packaging bag of the third embodiment, in a state where two films (the front film (1) and the back film (2)) are overlapped, only the back film (2) is slitted to form a linear gap (10 Then, the heat seal part (3) and the second heat seal part (longitudinal seal part (51), inner seal part (52a), outer seal part (52b)) are formed.
At this time, the gap (10) is closed by the outer seal portion (52b). However, since the gap (10) is formed so as to cross the region (11) sandwiched between the pair of left and right vertical seal portions (51), the gap (10) is not blocked in the region (11). .
Thereby, only the gap (10) in the region (11) becomes a linear opening (8) through which the finger can be inserted in communication with the upper space (6).
Since the configuration of the packaging bag of the third embodiment is the same as that of the packaging bag of the second embodiment except for the above, the same components as those of the bag of the second embodiment are denoted by the same reference numerals and description thereof is omitted.
The packaging bag of 3rd embodiment can acquire the effect similar to the packaging bag of 2nd embodiment.

FIG. 5 is a view showing a fourth embodiment of the packaging bag with a handle according to the present invention, wherein (a) is a rear view, (b) is a sectional view of A part, and (c) is a sectional view of B part.
In the packaging bag of the fourth embodiment, the front film (1) and the back film (2) are formed by folding one film in half, and the two opposite sides of the front film (1) and the back film (2) It is what is called a barracuda bag in which the heat seal part (3) is formed along only.
In the packaging bag of the fourth embodiment, the side facing the side (4) is open in the illustrated state, but is heat-sealed later (for example, after the contents are filled).
In the packaging bag of the fourth embodiment, after a single film is folded in half to form the front film (1) and the back film (2), only the back film (2) is slit to form a linear gap. (10) is formed. Thereafter, a heat seal part (3) and a second heat seal part (longitudinal seal part (51), inner seal part (52a), outer seal part (52b)) are formed.
At this time, the gap (10) is closed by the outer seal portion (52b). However, since the gap (10) is formed so as to cross the region (11) sandwiched between the pair of left and right vertical seal portions (51), the gap (10) is not blocked in the region (11). .
Thereby, only the gap (10) in the region (11) becomes a linear opening (8) through which the finger can be inserted in communication with the upper space (6).
Since the configuration of the packaging bag of the fourth embodiment is the same as that of the packaging bag of the second embodiment except for the above, the same components as those of the bag of the second embodiment are denoted by the same reference numerals and description thereof is omitted.
The packaging bag of 4th embodiment can also obtain the same effect as the packaging bag of 2nd embodiment.

FIG. 6 is a view showing a fifth embodiment of the packaging bag with a handle according to the present invention, wherein (a) is a front view, (b) is a back view, (c) is a cross-sectional view of A part, and (d) is a cross-sectional view. It is B section sectional drawing.
The packaging bag of the fifth embodiment is obtained by slightly changing the shape of the second heat seal part (5) in the packaging bag of the second embodiment shown in FIG. More specifically, the width of the outer seal portion (52b) is increased.
The outer seal portion (52b) in the packaging bag of the fifth embodiment extends outward from the full length portion extending from the upper end portion to the lower end portion of the longitudinal seal portion (51), and the end portions are on the left and right sides of the bag. It is formed to reach. The lower sides of the outer seal portion (52b) and the inner seal portion (52a) are on the same straight line.
Since the packaging bag of the fifth embodiment is the same as the packaging bag of the second embodiment except for the above-described configuration, the same components are denoted by the same reference numerals and description thereof is omitted.

  According to the packaging bag of the fifth embodiment, the contents (rice grains) are formed at the corners (circle portion indicated by reference numeral (20) in FIG. 3) formed by the vertical seal portion (51) and the horizontal seal portion (52). Etc.) is prevented from entering. Moreover, the area of a 2nd heat seal part (5) becomes large, and can improve a sealing strength.

FIG. 7 is a view showing a sixth embodiment of a packaging bag with a handle according to the present invention, where (a) is a front view, (b) is a back view, (c) is a cross-sectional view of part A, and (d) is a cross-sectional view. It is B section sectional drawing.
The packaging bag of the sixth embodiment is greatly different from the packaging bag of the above-described embodiment in that it has a portion in which the outer seal portion (52b) is intermittently formed (hereinafter referred to as an intermittent portion (52b1)). Is different.

Hereinafter, the configuration of the packaging bag of the sixth embodiment will be described with reference to differences from the packaging bag of the fifth embodiment shown in FIG.
The packaging bag of the sixth embodiment differs from the packaging bag of the fifth embodiment in the following points.
First, the packaging bag of the fifth embodiment is formed so that the outer seal portion (52b) extends to the left and right sides of the bag with a wide width over the entire length, but the packaging bag of the sixth embodiment is The wide width portion of the outer seal portion (52b) is formed only near the center of the bag (near the opening), and has a narrow width except for the vicinity of the center. And the narrow width part forms the intermittent part (52b1).
The intermittent part (52b1) is formed on the same width and the same width as the inner seal part (52a). Therefore, the intermittent part (52b1) is located below the opening (8).
The gap between the seal portions in the intermittent portion (52b1) is set so narrow that the contents cannot pass through. The same applies to a seventh embodiment (see FIG. 8) described later.

The second difference is that the packaging bag of the fifth embodiment has no nonwoven fabric (9) interposed in the upper space (6), but the packaging bag of the sixth embodiment has a nonwoven fabric (9 ) Is interposed.
In the packaging bag of the sixth embodiment, since the wide width portion of the outer seal portion (52b) is formed only near the center of the bag, the gap (10) is blocked by the outer seal portion (52b) except near the center. It is not peeled off and is closed with a nonwoven fabric (9) instead. Note that the gap (10) in the region (11) is not closed as in the fifth embodiment, and thus an opening (8) is formed in the region (11).
Similarly to the packaging bag of the first embodiment, the nonwoven fabric (9) is disposed so as to straddle the gap (10), and in a region having a constant width across the gap (10), only the back film (2) is formed in a band shape. It is thermally bonded. That is, the packaging bag of the sixth embodiment has a third heat seal part (12) in which the nonwoven fabric (9) is thermally bonded only to the back film (2). However, the packaging bag of the first embodiment extends until the third heat seal part (12) below the gap (10) reaches the left side and the right side of the bag, but the packaging bag of the sixth embodiment has a gap (10 The third heat seal part (12) below ()) does not extend to the left and right sides of the bag.
In the packaging bag of 6th embodiment, the clearance gap (10) of the part obstruct | occluded with the nonwoven fabric (9) acts as an air vent part. And the air inside a bag is guide | induced to this air vent part through the clearance gap between the seal parts in an intermittence part (52b1).

  According to the packaging bag of the sixth embodiment, the contents (rice grains, etc.) enter the corners formed by the longitudinal seal portion (51) and the lateral seal portion (52) as in the packaging bag of the fifth embodiment. It is prevented. In addition, the air vent function that the packaging bag of the fifth embodiment does not have can be exhibited.

FIG. 8 is a view showing a seventh embodiment of the packaging bag with a handle according to the present invention, wherein (a) is a front view, (b) is a back view, (c) is a cross-sectional view of A part, and (d) is a cross-sectional view. It is B section sectional drawing.
The packaging bag of the seventh embodiment is greatly different from the packaging bag of the above-described embodiment in that the longitudinal seal portion (51) extends to one side (4).

Hereinafter, the configuration of the packaging bag of the seventh embodiment will be described with reference to differences from the packaging bag of the first embodiment shown in FIG.
The packaging bag of the seventh embodiment differs from the packaging bag of the first embodiment in the following points.
First, the packaging bag of the first embodiment has a longitudinal seal portion (51) that does not reach one side (4), but the packaging bag of the seventh embodiment has a longitudinal seal portion (51) on one side (4). It extends to all the way.
Second, the packaging bag of the first embodiment has the outer seal portion (52b) formed above the opening (8), but the packaging bag of the seventh embodiment has the outer sealing portion (52b) as the opening. It is formed below (8).
Third, the packaging bag of the first embodiment has the outer seal portion (52b) formed continuously, whereas the packaging bag of the seventh embodiment has the outer seal portion (52b) formed intermittently. . That is, it has an intermittent part (52b1).
Fourth, the packaging bag of the first embodiment extends until the third heat seal part (12) below the gap (10) reaches the left side and the right side of the bag, but the packaging bag of the seventh embodiment is Similar to the packaging bag of the sixth embodiment, the third heat seal part (12) below the gap (10) does not extend to the left and right sides of the bag.

In the packaging bag of the seventh embodiment, the air inside the bag is guided to the air vent portion made of the nonwoven fabric (9) through the gap between the seal portions in the intermittent portion (52b1).
According to the packaging bag of 7th embodiment, the effect similar to the packaging bag of 1st embodiment can be acquired. In addition, since the vertical seal portion (51) extends to one side (4), the strength around the opening (8) to be the handle becomes high, and the handle is difficult to break.

FIG. 9 is a view showing an eighth embodiment of the packaging bag with a handle according to the present invention, wherein (a) is a front view, (b) is a back view, (c) is a cross-sectional view of A part, and (d) is a cross-sectional view. It is B section sectional drawing.
In the packaging bag of the eighth embodiment, the horizontal seal portion (52) does not have an inner seal portion that connects between the pair of left and right vertical seal portions (51). Instead, the opening portion (8 The packaging bag of the above-described embodiment in that it has a full-length seal portion (52c) extending below the pair of left and right vertical seal portions (51) and extending from the left side to the right side of the bag. Is very different.

Hereinafter, the configuration of the packaging bag of the eighth embodiment will be described with reference to differences from the packaging bag of the second embodiment shown in FIG.
The packaging bag of the eighth embodiment differs from the packaging bag of the second embodiment in the following points.
First, the packaging bag of the second embodiment has an inner seal portion (52a) that connects the horizontal seal portion (52) between the pair of left and right vertical seal portions (51). The form of packaging bag does not have an inner seal.
Second, in the packaging bag of the second embodiment, the outer seal portion (52b) extends outward from the upper end portion of the longitudinal seal portion (51), but the packaging bag of the eighth embodiment has an outer seal portion ( 52b) extends outward from the midway portion of the longitudinal seal (51).
Third, in the packaging bag of the second embodiment, the gap (10) in the portion other than the region (11) is closed by the outer seal portion (52b), but in the packaging bag of the eighth embodiment, the outer seal portion. Since (52b) is formed above the gap (10), the gap (10) is not blocked.

  According to the bag of the eighth embodiment, the full length seal portion (52c) extending below the pair of left and right vertical seal portions (51) and extending from the left side to the right side of the bag below the opening (8). Therefore, the contents (such as rice grains) are prevented from entering the corners formed by the vertical seal portion (51) and the horizontal seal portion (52). Moreover, it becomes easy to insert a finger into the opening part (8) used as a handle.

In the packaging bag according to the first to eighth embodiments described above, as shown in FIGS. 10 and 11, a second communicating with the upper space (6) inside the bag at the substantially central portion in the length direction of the one side (4). An opening (13) can be provided.
In the example of FIG. 10, the second opening (13) is formed by a linear cut (represented by a thick line in the figure) along one side (4).
In the example of FIG. 11, the second opening (13) is formed by eliminating a part of the heat seal portion (3) along one side (4).
The length of the second opening (13) is the same as or shorter than that of the opening (8).

  In the packaging bag of the first to eighth embodiments, when the upper space (6) is narrowed by providing such a second opening (13), the tip of the finger inserted from the opening (8) is arranged. It can expose from a 2nd opening part (6). Therefore, the lower space (7) can be widened, and the amount of contents that can be accommodated in the bag can be increased.

  In the above-described embodiment, the case where the two opposite sides where the heat seal portion (3) is formed is the short side of the bag is illustrated, but in the present invention, the heat seal portion (3) is formed. The two opposing sides may be the long sides of the bag as shown in FIG. In this case, one side (4) perpendicular to the two opposite sides is a short side, and the transverse seal portion (52) (inner seal portion (52a) and outer seal portion (52b) of the second heat seal portion (5). ) Is formed parallel to the short side.

When the two opposite sides where the heat seal part (3) is formed are the short sides of the bag, the opening (8) to be the handle is formed on the long side of the bag. When gripped, the bag can be carried sideways. Therefore, when carrying, it can prevent that a bottom part collides with a level | step difference etc. and a bag is torn.
On the other hand, when the two opposite sides on which the heat seal part (3) is formed are the long sides of the bag, the opening (8) serving as a handle is formed on the short side of the bag. When the hand is gripped, the bag is in the form of a general packaging bag in which the bag is oriented vertically, and a packaging bag with a handle having excellent versatility is obtained.

Moreover, in above-described embodiment, the space | interval of a pair of right-and-left vertical seal | sticker parts (51) is formed so that it may become wide gradually toward the direction away from one side (4). In this case, there is an advantage that it is easy to insert a finger into the opening (8) and it is easy to carry.
At this time, as shown in FIG. 13, the angle (α) formed by the tangent (indicated by a two-dot chain line) of the longitudinal seal portion (51) and one side (4) is an acute angle.
Although the magnitude | size of an angle ((alpha)) is not specifically limited, For example, it can set to the range of 60 degrees or more and less than 90 degrees. The sharper the angle (α) formed between the tangent to the longitudinal seal portion (51) and one side (4), the harder the handle is damaged.

However, in this invention, you may form so that the space | interval of a pair of left-right vertical seal parts (51) may become narrow gradually toward the direction away from one side (4) (refer Fig.14 (a)).
In this case, since the capacity of the lower space (7) can be increased, the amount of contents that can be accommodated in the bag can be increased. Moreover, it becomes difficult for the contents (rice grains or the like) to enter the corner portion formed by the vertical seal portion and the horizontal seal portion.
Moreover, you may form so that the space | interval of a pair of right-and-left vertical direction seal | sticker parts (51) may become the same width | variety toward the direction away from one side (4) (refer FIG.14 (b)).
In this case, the effect of facilitating insertion of fingers into the opening (8) and the effect of increasing the amount of contents that can be accommodated in the bag can be exhibited in a balanced manner.

Moreover, in this invention, you may make it the connection part of a vertical direction seal part (51) and a horizontal direction seal part (52) have a round (arc-shaped part).
In the example of FIG. 15A, the connecting portion between the vertical seal portion (51) and the outer seal portion (52b) has a rounded shape.
As described above, since the connecting portion between the vertical seal portion (51) and the outer seal portion (52b) has a round shape, the vertical seal portion and the horizontal seal are inserted when a finger is inserted into the opening serving as a handle. This prevents the force from being concentrated on the corner formed by the part and prevents the handle from being damaged.
In the example of FIG. 15B, the connecting portion between the longitudinal seal portion (51) and the inner seal portion (52a) has a rounded shape.
In addition, although not shown, there are rounds in both the connecting portion between the vertical seal portion (51) and the outer seal portion (52b) and the connecting portion between the vertical seal portion (51) and the inner seal portion (52a). You may do it.

  Although not shown in the drawings, the packaging bag according to the present invention can be provided with a chuck composed of ridges and recesses that can be engaged with each other. The chuck may be provided in a direction parallel to or perpendicular to the transverse seal portion (52) of the second heat seal portion (5).

  Examples of the contents accommodated in the packaging bag according to the present invention include rice, wheat, fertilizer, and soil, but are not particularly limited thereto.

  The present invention is suitably used as a packaging bag for containing contents such as rice, wheat, fertilizer, and soil.

DESCRIPTION OF SYMBOLS 1 Surface film 2 Back surface film 3 Heat seal part 4 One side which makes a right angle with two opposing sides in which the heat seal part was formed 5 Second heat seal part 51 Vertical seal part 52 Horizontal seal part 52a Inner seal part 52b Outer seal Part 52b1 The part where the outer seal part is formed intermittently (intermittent part)
6 Upper space 7 Lower space 8 Linear opening 9 Non-woven fabric 11 Region 13 sandwiched between a pair of left and right longitudinal seals Second opening

Claims (9)

A rectangular packaging bag having a heat seal part along at least two opposite sides of the surface film and the back film,
In the vicinity of the inner side of one side perpendicular to the two opposite sides, there is a second heat seal part that partitions the internal space of the bag into an upper space on the one side and a lower space on the opposite side,
The second heat seal part comprises a lateral seal part extending parallel to the one side and a pair of left and right vertical seal parts extending perpendicularly or obliquely to the one side,
On the back surface of the bag is formed a linear opening that communicates with the upper space and into which fingers can be inserted,
The packaging bag with a handle, wherein the opening is formed so as to cross a region parallel to the one side and sandwiched between the pair of left and right vertical seals.   The packaging bag with a handle according to claim 1, wherein a nonwoven fabric is interposed between the front film and the back film in the upper space. The lateral seal portion is
An inner seal portion that connects between the pair of left and right vertical seal portions below the opening,
The packaging bag with a handle according to claim 1 or 2, further comprising an outer seal portion extending outwardly of the pair of left and right vertical seal portions.   The packaging bag with a handle according to claim 3, wherein the outer seal portion extends outward from an upper end portion of the vertical seal portion.   The packaging bag with a handle according to claim 3, wherein the outer seal portion extends outward from a full length portion extending from an upper end portion to a lower end portion of the longitudinal seal portion.   The packaging bag with a handle according to claim 3, wherein the outer seal portion has intermittently formed portions.   The packaging bag with a handle according to any one of claims 1 to 6, wherein the pair of left and right vertical seal portions extend to reach the one side. The lateral seal portion is
A full-length seal portion extending below the pair of left and right vertical seal portions below the opening and extending from the left side of the bag to the right side;
The packaging bag with a handle according to claim 1 or 2, further comprising an outer seal portion extending outwardly of the pair of left and right vertical seal portions.   The packaging bag with a handle according to any one of claims 1 to 8, wherein a second opening communicating with the upper space is provided at a substantially central portion in the length direction of the one side.

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