JP2003146337A - Packaging bag with spout - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag which is easy to hold and pour out contents in pouring out the contents from a spout, and with which the contents can be smoothly poured out. SOLUTION: A spout 20 including a tubular passage for leading contents is fixed, at the center of an upper end of the packaging bag 1 constituted by gluing films having a sealant layer on its internal surface to each other, between the respective films forming a front and a rear of the packaging bag. Oblique sides 10 are provided, which are slantly cut from both sides of the spout 20 toward respective side rims 6 and sealed. The packaging bag 1 is made into a gusset bag, and four oblique sides 10 are provided toward the respective side rims.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a packaging bag with a spout.

[0002]

2. Description of the Related Art As a packaging bag for liquid beverages, a flexible film made by laminating polyethylene or other synthetic resin and aluminum foil is used as a packaging material, and this is made into a gusset bag having folding parts on the left and right sides. Is known, and there is known a packaging bag in which a spout 62 for pouring out contents is sandwiched and fixed to a heat-bonding portion 61 at an upper edge portion of the packaging bag 60 (see FIG. 5). Spout 62 used for this packaging bag
Is equipped with a circular tube-like passage through which the contents are drawn out.

However, in the packaging bag as described above, when the contents are transferred to another container or the like, the vicinity of the upper corner portion 63 forming the folding portion of the bag is laterally disposed on both sides of the spout 62. Since it overhangs greatly, it is an obstacle to the part, and it is difficult to hold the bag and it is difficult to transfer it. Further, in the vicinity of the upper corners 63 of the bag on both sides of the spout, when the contents are filled, there is a capacityless part (dead space) where the contents are not filled.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above circumstances, and holds a bag when pouring out the contents from the pouring outlet such as transferring the contents to another container or the like. The main object is to provide a packaging bag that is easy and easy to pour out contents, and that can pour out contents smoothly.

[0005]

[Means for Solving the Problems] (1) In a packaging bag constructed by laminating a film having a sealant layer on the inner surface, a spout provided with a tubular passage through which the contents are drawn out at the center of the upper end of the bag. Is sandwiched between the films forming the front surface and the back surface of the packaging bag and fixed, and is obliquely cut from both sides of the spout toward each side edge of the bag, and the packaging is provided with a sealed oblique side portion. It is a bag. (2) The packaging bag is a self-supporting bag. (3) The packaging bag is a gusset bag and has four oblique sides toward each side edge of the bag. (4) The packaging bag is a standing pouch. (5) A first bulging seal portion formed by bulging toward the center of the bag is provided on the upper side of the seal portion in each oblique side portion. (6) A second bulging seal portion formed by bulging toward the center of the bag is provided on the lower side of the seal portion in each oblique side portion. (7) An outwardly protruding non-sealing portion is provided at an intermediate position in the vertical direction of the sealing portion at each hypotenuse.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view of a packaging bag 1 according to an embodiment of the present invention (folded state in which the contents are not filled), and FIG. 2 is a perspective view of the packaging bag 1 of the embodiment in which the contents are filled. 3 and 4 are front views of a packaging bag 1 according to another embodiment. The seal portion is shown by hatching.

A packaging bag 1 shown in FIG. 1 is a gusset bag made of a composite synthetic resin film (including a sheet) having a sealant layer of polyethylene or the like on one side with the sealant layer as the inner surface. Folded portions (towns) 4 are formed on both left and right sides of the back surface 3. Reference numeral 5 is a folded top. Reference numeral 6 is a side seal portion,
It forms each side edge of the bag to enhance rigidity and self-supporting property, but it is not always necessary. Reference numeral 7 is a bottom seal portion that seals the front surface portion 2 and the back surface portion 3, and reference numeral 8 is a slanted bottom seal portion that seals the folding portion 5 and the front surface portion 2 or the back surface portion 3. When the contents are filled, It opens so that the bottom surface is formed and is self-supporting. The packaging bag 1 has flexibility and is usually constructed by laminating appropriate materials such as polyethylene, polyester, and aluminum foil. The sealant layer can be used as a heat seal layer to form each seal portion by heat bonding using a hot plate.

At the center of the upper end of the packaging bag 1, a spout 20 having a tubular passage through which the contents are drawn out is fixed by being sandwiched between the films forming the front portion 2 and the rear portion 3 of the packaging bag 1. ing. The spout 20 is usually the upper seal portion 9 of the packaging bag 1.
When forming, it is fixed by heat bonding or the like. Outlet 20
It is preferable that the opening (tip portion) of the container protrudes from the upper seal portion 9 because the content can be easily poured out. A synthetic resin integrally molded is preferably used, and the spout 2
If the 0 opening projects, attach the cap and seal. However, the spout 20 may be a straw-shaped one as long as it has a tubular passage through which the contents are drawn out, and the structure thereof is not particularly limited.

From the upper seal portions 9 on both sides of the spout 20 toward the side seal portions 6 which are the side edge portions of the packaging bag 1, obliquely cut and sealed oblique side portions 10 are provided. . Due to the hypotenuse portion 10, the packaging bag 1 has a shape in which the spout 20 is on the upper side and the shape widens toward the side seal portion 6. Since the packaging bag 1 in FIG. 1 is a gusset bag, it has four oblique sides 10 toward each side edge portion (side seal portion 6) of the bag. In the state where the contents are filled, as shown in FIG. 2, the four hypotenuses 10 are spread in all directions toward the respective side seal parts 6 with the spout 20 as the upper center. The contents are guided to each hypotenuse 10 and smoothly poured out from the spout 20, and
Since there are no large overhanging corners on both sides of the spout, when pouring the contents out of the spout, such as when transferring the contents to another container, etc., the upper corners do not get in the way and hold the bag. Easy to pour out the contents. In the gusset bag, the vicinity of the upper corner is a dead space where the contents are not originally filled, so that the capacity does not decrease. The angle α of the hypotenuse portion 10 is not particularly limited, but is preferably 45 ° or more. The start position of the hypotenuse part 10 is near the folding top part 5 and varies depending on the size of the bag and the like, and is not particularly limited, but for a bag having a capacity of 200 to 2000 ml, it is within a few centimeters on both sides of the spout 20. Is preferred.

The packaging bag 1 shown in FIG. 3 shows an example in which the bag is manufactured as a standing pouch. The bottom folding part 1 in which the folded packaging film is inserted in the bottom part
Have two. The front part 2 and the back part 3 of the opposing packaging film are joined at the bottom folding part 12 at both side edge parts (side seal parts 6).
Together, they are heat-bonded and sealed. Reference numeral 8 is the bottom folding part 1
It is an arcuate bottom seal part 13 that seals the 2 and the front face part 2 or the back face part 3, and when the contents are filled, the arcuate bottom seal part 13 is opened so that the bottom face is formed, and self-sustaining property is imparted. Reference numeral 9 is an upper seal portion.

At the center of the upper end of the packaging bag 1, a spout 20 having a tubular passage through which the contents are drawn out is fixed by being sandwiched between the films forming the front portion 2 and the rear portion 3 of the packaging bag 1. ing. The spout 20 is usually the upper seal portion 9 of the packaging bag 1.
When forming, it is fixed by heat bonding or the like. Outlet 20
Is the same as that described in FIG. A synthetic resin integrally molded is preferably used, and when the opening of the spout 20 is projected, a cap is attached and sealed.

From the upper seal portions 9 on both sides of the spout 20 to the side seal portions 6 which are the side edge portions of the packaging bag 1, obliquely cut and sealed oblique side portions 10 are provided. . Due to the hypotenuse portion 10, the packaging bag 1 has a shape in which the spout 20 is on the upper side and the shape widens toward the side seal portion 6. Since the packaging bag 1 in FIG. 2 is made of a standing pouch, it has two oblique side portions 10 toward each side edge portion (side seal portion 6) of the bag. The contents are guided to each hypotenuse 10 and smoothly poured out from the spout 20, and since there are no overhanging upper corners on both sides of the spout, the contents are transferred to another container or the like. , When pouring out the contents from the pouring outlet, the upper corners do not get in the way, making it easy to hold the bag and pouring out the contents. The angle α of the hypotenuse portion 10 is not particularly limited, but is preferably 45 ° or more.

The packaging bag 1 shown in FIG. 4 shows a modified example of the embodiment shown in FIG. 3, which is made as the standing pouch. In this embodiment, the shape of the seal portion in each oblique side portion 10 is different from that shown in FIG. A first bulging seal portion 30 that bulges toward the center of the bag is provided on the upper side of the seal portion of each oblique side portion 10. In addition, a second bulging seal portion 40 formed by bulging toward the center of the bag is provided on the lower side of the seal portion of each oblique side portion 10. A non-sealing portion 50 protruding outward in the bag is provided at an intermediate position in the vertical direction of the sealing portion in each of the oblique sides 10. The non-sealing portion 50 is formed between the first bulging seal portion 30 and the second bulging seal portion 40. By forming the hypotenuse portion 10, the inside of the packaging bag 1 is gradually narrowed in the vertical direction from the middle portion to the spout 20, and the inner diameter of the packaging bag 1 is gradually narrowed. Bending is likely to occur. By providing the first bulging seal portion 30, the second bulging seal portion 40, and the non-sealing portion 50, the center fold is prevented. Although it is preferable to provide both the first bulging seal portion 30 and the second bulging seal portion 40, either one may be provided. The contours of the first bulging seal portion 30 and the second bulging seal portion 40 do not have to be arcuate. The first bulging seal portion 30, the second bulging seal portion 40, and the non-sealing portion 50 may be provided in the gusset bag.

The contents to be filled in the packaging bag 1 are not particularly limited, but are suitable for use as liquids, viscous substances, powders and the like. For example, the present invention is not limited to foods such as liquid drinks, soy sauce, sauces, mayonnaise, ketchup, sugar and salt, and not only foods, but also detergents, greases, oils, paints and the like. Since the packaging bag 1 has flexibility, even viscous contents can be pushed out by hand and easily squeezed out.

The embodiment of the present invention has been described above.
The present invention is not limited to the above-mentioned ones, and can be carried out by appropriately changing or adding within the scope of the gist of the present invention. For example, the form of the bag is not limited to the gusset bag and the standing pouch,
It is also possible to use a back-lining gas bag, a three-sided seal bag, a four-sided seal bag, or the like. Moreover, the hypotenuse part 10 does not need to be linear.

[0016]

According to the present invention, at the center of the upper end of the bag, a spout having a tubular passage through which the contents are drawn out is fixed by sandwiching it between the films forming the front surface and the back surface of the packaging bag. The oblique sides are cut from both sides of the spout toward each side edge of the bag, and the sealed hypotenuse is provided so that the contents can be smoothly dispensed from the spout, and also on both sides of the spout. Since there is no overhanging upper corner, when pouring the content from the spout, such as when transferring the content to another container, the upper corner does not get in the way and the bag is easy to hold Easy to pour. Further, there is an advantage that the amount of air remaining in the bag at the time of filling the contents can be reduced. In addition, the amount of resin used for the packaging bag is reduced.

Since the center of gravity of the bag is on the lower side, in the case of a self-supporting bag, a gusset bag or a standing pouch, the bag can be erected in a more stable state.

A first bulging seal portion and / or a second bulging seal portion is provided at each oblique side portion, and a non-sealing portion which is convex outward is provided at an intermediate position in the vertical direction of the seal portion at each oblique side portion. By providing the above, it is possible to prevent the rigidity from decreasing below the spout and prevent the bag from being folded.

[Brief description of drawings]

1 is a front view of an embodiment of a packaging bag 1. FIG.

FIG. 2 is a perspective view showing a state where the contents of the packaging bag 1 are filled.

FIG. 3 is a front view of another embodiment of the packaging bag 1.

FIG. 4 is a front view of another embodiment of the packaging bag 1.

FIG. 5 is a front view of a conventional packaging bag.

[Explanation of symbols]

1 packaging bag 2 front 3 back 6 Side seal part (side edge part) 10 hypotenuse 20 outlet

Claims (7)

[Claims] 1. A packaging bag constructed by laminating a film having a sealant layer on the inner surface thereof, wherein a spout having a tubular passage through which contents are drawn out is provided at the center of the upper end of the bag, and the front and the back of the packaging bag. A packaging bag provided with a slanted side portion which is fixed by being sandwiched between the respective films forming the sheet and is obliquely cut from both sides of the spout toward each side edge portion of the bag. 2. The packaging bag according to claim 1, wherein the packaging bag is a self-supporting bag. 3. The packaging bag according to claim 2, wherein the packaging bag is a gusset bag and has four oblique sides toward each side edge of the bag. 4. The packaging bag according to claim 2, wherein the packaging bag is a standing pouch. 5. The packaging bag according to claim 2, further comprising a first bulging seal portion formed by bulging toward the center of the bag on the upper side of the seal portion in each oblique side portion. 6. The packaging bag according to claim 2, further comprising a second bulging seal portion that is formed by bulging toward the center of the bag on the lower side of the seal portion in each oblique side portion. 7. A non-seal portion that is convex outward is provided at an intermediate position in the vertical direction of the seal portion on each hypotenuse.
6. The packaging bag according to any one of 6.