JP2008230649A - Packaging bag - Google Patents

Abstract

The present invention provides a packaging bag that can be easily filled with contents and can be easily installed on a wall surface or the like.
The present invention relates to a packaging bag 1 formed by integrally joining four end portions of a front surface portion 6 and a back surface portion 4, wherein the front surface portion 6 is positioned at a position intermediate between the upper end and the lower end of the front surface portion 6. The opening part 2 which protrudes on the outer surface of the part 6 is provided, and the opening part 2 is provided by joining two or more folding parts by which the front-surface part 6 was folded together, and it is characterized by the above-mentioned.
[Selection] Figure 2

Description

  The present invention relates to a packaging bag that is filled with a fragrance or a dehumidifying agent.

  Conventionally, fragrances, deodorants, hygroscopic materials, insect repellents, and the like are often sold and used in a state of being stored in a container such as a plastic molded product or a glass bottle. Since these containers have a large volume at the time of disposal, methods such as refilling only the medicines to be stored are performed, but there is a problem that the refilling work is complicated.

In order to solve these problems, a packaging bag is proposed in which a top film having gas permeability is provided in an opening of a packaging bag formed by welding a film or the like (see, for example, Patent Document 1). ). Since this packaging bag can be folded after use, the volume at the time of disposal can be reduced.
JP 2004-359292 A

  However, the top film of the packaging bag of Patent Document 1 is fused to the front surface and the back surface of the packaging bag. Therefore, as a manufacturing process, it is necessary to secure the filling port by fusing the top film only to one side of the packaging bag and to fuse the other side after filling the contents such as the medicine. For this reason, there exists a problem that a process becomes complicated.

  In addition, there are many cases where a sufficient space for installation cannot be ensured at a place such as a washroom or a closet where the above-described fragrance is installed. In this case, it may be required to install the packaging bag by fixing the upper part of the packaging bag to the wall surface with a thumbtack or by hanging the hanging hole provided in the upper part on the hook of the wall surface.

  However, since the opening part is provided in the upper end of the packaging bag of patent document 1, there is not enough space for installation as mentioned above, and the installation to a wall surface etc. is difficult. Moreover, even if it installs as mentioned above, an opening part does not fully open and the effect of the content may not fully be acquired.

  Furthermore, since the top film is provided in the vicinity of the opening, there is a possibility that the top film may be damaged when the above installation is performed. In this case, there is a problem that diffusion of the fragrance or the like becomes unstable.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a packaging bag that can be easily filled with contents and can be easily installed on a wall surface or the like.

  The packaging bag of the present invention is a packaging bag formed by integrally joining the four end portions of the front surface portion and the back surface portion, and the outer surface of the front surface portion is positioned between the upper end and the lower end of the front surface portion. An opening portion protruding upward is provided, and the opening portion is provided by integrally joining two or more folded portions in which the front surface portion is folded.

  The packaging bag of this invention opens the front surface of the position away from the upper end instead of the upper end of a packaging bag by pulling an opening part in the left-right direction.

  The front portion may be formed of a single sheet-like member.

  The packaging bag of the present invention is formed of a sheet-like material having gas permeability and flexibility, and the upper end is joined to the upper side of the opening part of the surface of the front part facing the back part, and The lower end may further include a partition portion joined to the lower side of the opening portion of the surface to which the upper end is joined.

  Furthermore, the packaging bag of the present invention may further include a bottom surface part that is bent back and forth in an inverted V shape, has a front end joined to the lower end of the front part, and a rear end joined to the lower end of the back part.

  According to the packaging bag of the present invention, it is not necessary to provide a mechanism for opening at the upper end, so that the contents can be easily filled. Moreover, since the front part opens when the opening part formed in the front part is torn, it can be easily fixed to the wall surface or the like using the space between the opening part and the upper end.

Hereinafter, a packaging bag 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8.
FIG. 1 is a perspective view of the packaging bag 1. A fragrance A is stored inside the packaging bag 1.
FIG. 2 is a cross-sectional view of the side surface of the packaging bag 1. The packaging bag 1 has a front wall portion 3 having an opening portion 2, a back surface portion 4 joined to the front wall portion 3, and a bottom surface portion 5 interposed between the front wall portion 3 and the back surface portion 4. Is formed.

As shown in FIG. 1, the front wall portion 3 and the back surface portion 4 are integrally joined at the left and right and upper end portions, and the lower end is integrally joined via a bottom surface portion 5 as will be described later. Yes.
In the following description, expressions such as front, rear, left and right are based on a state in which the front wall 3 is on the front and the bottom 5 is on the bottom, as shown in FIG.

The front wall portion 3 is composed of a front surface portion 6 that forms the outer surface of the packaging bag 1 and a partition portion 7 that is integrally joined to a surface of the front surface portion 6 that faces the back surface portion 4.
The front surface portion 6 is formed of a single sheet-like flexible film (hereinafter referred to as “main body film”) having heat-fusibility. The main body film may be a single film having heat-fusibility or a laminated film in which a heat-adhesive resin layer is laminated on at least one surface.

  The front surface portion 6 is folded back in the width direction so as to protrude to the outside of the packaging bag 1 at an arbitrary intermediate position between the upper end and the lower end. The folded portion is integrally joined, and the opening portion 2 is formed so as to protrude on the outer surface. At the left and right end portions in the width direction of the opening portion 2, notches 8 are provided as triggers for tearing the opening portion 2. The notch 8 may be provided at either the left or right end. Further, a slit may be provided instead of the notch 8.

  The partition part 7 is formed with the sheet-like material which has gas permeability and flexibility. In this embodiment, it is formed from a heat-fusible film provided with a plurality of vent holes 7A. It may replace with this and may form the partition part 7 with the woven fabric which has heat-fusibility, a nonwoven fabric, the work cloth which provided the heat-fusibility by resin processing, etc. It is preferable that the material of the partition portion 7 is appropriately selected from the above materials in consideration of the properties of the contents to be filled.

  As shown in FIG. 1, the partition part 7 is bent so that a fold line extends to the left and right, and as shown in FIG. 2, it is folded into a substantially V shape in a side view. The upper end 7B and the lower end 7C of the partition part 7 are thermally fused and joined to the front face part 6 on the upper side and the lower side of the unsealing part 2, respectively.

  The back surface portion 4 is formed of a single film member made of the same material as that of the main body film. The bottom surface portion 5 is formed of a film made of the same material as that of the main body film. The bottom surface portion 5 is folded between the front surface portion 6 and the back surface portion 4 and is interposed between the front surface portion 6 and the rear surface portion 4. Are thermally fused and joined to the front surface portion 6 and the back surface portion 4, respectively.

A manufacturing procedure of the packaging bag 1 configured as described above and a procedure for filling the packaging bag 1 with the fragrance A will be described with reference to FIGS. 1 to 8.
First, as shown in FIG. 3, the position F <b> 1 that forms the opening portion 2 on the front surface portion 6 is folded back so as to protrude outward and the fold line extends to the left and right. Further, the positions F2 and F3 separated from the position F1 by the length that the unsealed part 2 protrudes are folded back so as to protrude inward.

  As shown in FIG. 5, the first folded portion (folded portion) 2A defined by the fold lines F1 and F2 and the second folded portion (folded portion) 2B defined by the fold lines F1 and F3 are heated. When they are joined together by fusion, the opening part 2 is formed. A notch 8 (not shown) is provided on either the left or right end of the opening portion 2 or on both ends.

  As shown in FIGS. 4 and 5, the partition 7 is bent so that the lower end 7 </ b> C comes to the front at a position F <b> 4 below the midpoint in the height direction. As shown in FIG. 6, the upper end 7B is heat-sealed to the upper side of the opening portion 2 on the surface facing the back surface portion 4 of the front surface portion 6 and the lower end 7C is bonded to the lower side of the opening portion 2 on the same surface, respectively By joining integrally with the part 6, the front wall part 3 is completed.

  Subsequently, as shown in FIG. 2, the front end 5A and the rear end 5B of the bottom surface portion 5 bent back and forth in an inverted V shape are thermally fused and joined to the front wall portion 3 and the back surface portion 4, respectively. Furthermore, the left and right end portions of the front wall portion 3, the back surface portion 4, and the bottom surface portion 5 are integrated by heat fusion.

In order to enhance the self-supporting property of the packaging bag 1, as shown in FIG. An auxiliary seal 9 is provided.
Thus, as shown in FIG. 7A, the packaging bag 1 having the filling port 10 at the upper end is completed.

  As shown in FIGS. 7A and 7B, after the fragrance A is introduced from the opened filling port 10, as shown in FIG. 7C, the filling port 10 is sealed by thermal fusion.

  When opening, the opening part 2 is pulled from the notch 8 in the left-right direction. Then, the opening part 2 in which the first folded part 2A and the second folded part 2B are integrally joined is torn at the interface with the upper and lower front face parts 6 due to the difference in thickness between the upper and lower front face parts 6. Thus, the opening 11 is formed as shown in FIG. Since the entire periphery of the opening 11 is sealed by a partition 7 fused integrally with the front surface 6, the diffusion of the fragrance A is suitably controlled by the partition 7.

  The unwrapped packaging bag 1 may be installed by spreading the bottom surface portion 5 to be self-supporting, or may be installed by fixing a portion above the opening 11 directly to the wall surface with a thumbtack or the like. Further, the area of the sealing portion at the upper end may be increased, and a hooking hole for hanging on a hook or the like on the wall surface may be provided in the sealing portion.

  According to the packaging bag 1 of the present invention, the opening 11 can be hermetically sealed only by joining the upper and lower end portions 7A, 7B of the partition portion 7 to the front surface portion 6. There is no need for a step of fusing the partition portion 7 to the back surface portion 4 after filling the contents. Therefore, the manufacturing process including filling of the contents can be simplified. Further, when the content to be filled is a liquid, it is possible to prevent a sealing failure between the partition portion 7 and the back surface portion 4 due to splashing and adhering to the back surface portion 4.

  Moreover, since the opening part 2 is provided in the front surface part 6, the opening part 11 is formed not in the upper end of the packaging bag 1, but in the front surface. Therefore, the packaging bag 1 can be fixed to the wall surface or the like with the opening 11 being satisfactorily opened by a method such as fixing the upper portion of the opening portion 2 with a thumbtack or the like. Therefore, it is possible to provide a packaging bag that can be installed even when a sufficient installation space cannot be secured.

  Furthermore, since the unfolding part 2 has the 1st folding | turning part 2A and the 2nd folding | turning part 2B which were formed by folding | folding the front part 6, the front part 6 of the upper and lower 1 layer structure is joined together. Due to the difference in thickness, the interface between the opening portion 2 and the front surface portion 6 is easily torn without requiring a large force. Therefore, it is possible to configure a packaging bag that can be opened smoothly with a simple structure without providing special processing such as providing ruled lines in the opening portion 2 or disposing another member for cutting. .

  Moreover, since the front surface part 6 is formed by one sheet-like main body film including the opening part 2, the number of parts is small, and a packaging bag can be comprised by a simple structure at low cost.

  In addition, the opening 11 can be brought closer to the bottom surface than when the opening is provided at the upper end. Therefore, since the center of gravity when used while being self-supported is at a lower position, it can be used in a more stable state.

Although the embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. .
For example, in the above-described embodiment, the example in which the partition portion and the bottom surface portion are configured has been described. However, depending on the nature of the contents to be filled and the usage situation, one or both of the partition portion and the bottom surface portion may be If it is not required, the packaging bag of the present invention may be formed by appropriately removing these.

  Moreover, since an opening part can be provided in the arbitrary positions of a front part, the length from an opening part to the upper end of a packaging bag can be set freely. Therefore, the design of the packaging bag can be improved by increasing the length from the opening portion to the upper end and cutting it into a desired shape. Moreover, when it is desired to form the entire packaging bag small, the distance from the opening portion to the upper end may be set to the minimum necessary length.

  Furthermore, in the above-described embodiment, the example in which the front surface portion 6 is formed by bending a single film has been described, but instead, the end portions of the upper and lower two films are bent to melt the end portions. You may form the front part which has an opening part by putting and joining integrally.

  Further, in the above-described embodiment, the example in which the two folded portions are integrally joined and the opening portion is provided has been described, but instead, the front portion is further folded to form more folded portions. Then, they may be joined together to provide an opening portion. If it does in this way, the difference of the thickness of an opening part and a front-surface part will become larger, and will become easier to open.

It is a perspective view which shows the packaging bag of one Embodiment of this invention. It is sectional drawing of the packaging bag. It is a figure which shows the folding | turning position of the front part of the packaging bag. It is a figure which shows the folding | turning position of the partition part of the packaging bag. It is sectional drawing of the front part and partition part after a bending process. It is sectional drawing of the front wall part of the packaging bag. It is sectional drawing which shows the process of filling the packaging bag with a fragrance | flavor. It is a perspective view which shows the state by which the packaging bag was opened.

Explanation of symbols

1 packaging bag 2 opening part 2A 1st folding part (folding part)
2B 2nd turning part (turning part)
4 Back part 5 Bottom part 6 Front part 7 Partition part

Claims (4)

A packaging bag formed by integrally joining the front and back ends of the four sides,
In the middle position between the upper end and the lower end of the front part, provided with an opening part projecting on the outer surface of the front part,
The packaging bag is characterized in that the unsealing part is provided by integrally joining two or more folded parts in which the front part is folded.   The packaging bag according to claim 1, wherein the front portion is formed of a single sheet-like member.   It is formed of a sheet-like material having gas permeability and flexibility, and its upper end is joined to the upper side of the opening part of the surface of the front part facing the rear part, and the lower end is joined to the upper end. The packaging bag according to claim 1, further comprising a partition portion joined to a lower side of the opened portion of the opened surface.   4. The apparatus according to claim 1, further comprising a bottom surface portion that is bent back and forth in an inverted V shape, has a front end joined to a lower end of the front portion, and a rear end joined to a lower end of the back portion. The packaging bag of any one of Claims.

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