JPH0738151Y2 - Packaging bag - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a packaging bag suitable for packaging stationery or the like that does not require complete sealing.

[Problems to be solved by conventional techniques and devices]

In this type of conventional packaging bag, since the opening of the bag is closed by thermal welding or adhesive after inserting the article, the bag opening process is always required in the packaging work, which increases the cost of the packaging work. It was a big factor. Further, since the opening for inserting the article is formed by aligning the edges of the upper and lower films constituting the bag, it is easy for the article to be caught on one of the edges when the article is inserted, and therefore the packaging is performed. There is a problem that it is difficult to automate the work.

In view of the above problems, the present invention eliminates the need for a bag closing step after article insertion, and can realize a significant cost reduction in packaging work, and also prevents articles from being caught on the edges during article insertion. It is an object of the present invention to provide a packaging bag that facilitates automation of packaging work.

[Means and Actions for Solving the Problems]

The packaging bag according to the present invention comprises a lower film, an intermediate film that is overlapped from one end of the lower film to a midway position, and has a peripheral edge portion other than an inner end edge adhered to the lower film.
Near the inner edge of the intermediate film, which is overlapped from the other end of the lower film to an intermediate position of the intermediate film and has a peripheral portion other than the inner edge of the lower film and the upper film bonded to the intermediate film. By providing a pair of auxiliary adhesive portions that protrude inward from both side edges as an adhesive portion with the upper film, it is possible to simply press the both side edges near the auxiliary adhesive portion inwardly after inserting the article together with the upper film. The intermediate film is bent upward to close the opening. Further, the exposed portion of the intermediate film serves as a guide when the article is inserted.

Furthermore, a cut along the both side edges is made in a portion corresponding to the base of the auxiliary adhesive portion of the intermediate film, or both side edge portions of the intermediate film and the lower film near the auxiliary adhesive portion and the upper film and the lower film simultaneously. By forming both side edge portions as non-adhesive portions, the upper film and the intermediate film are more easily bent upward when both side edges near the auxiliary adhesive portion are pressed inward.

Also, the packaging bag according to the present invention has a structure similar to that described above, and by forming a lower film, an intermediate film, and an upper film by alternately bending one film, the manufacturing cost can be reduced. Also, the same effect can be obtained by forming any one of the lower film, the intermediate film and the upper film by bending. Furthermore, if two films are welded at each bent end, the strength is increased.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

FIG. 1 (A) is a perspective view of a first embodiment of a packaging bag according to the present invention, and FIGS. 1 (B), (C) and (D) are respectively FIG. 1 (A) BB line and C line. It is sectional drawing which follows the -C line and the D-D line.

Reference numeral 1 is a rectangular lower film, 2 is an intermediate film in which one end 1a of the lower film 1 is overlapped from an intermediate position, and peripheral edges other than the inner edge 2a are adhered to the lower film 1, 3 is the lower film 1
Is an upper film that is overlapped from the other end 1b to a midway position of the intermediate film 2 and has a peripheral edge portion other than the inner edge 3a bonded to the lower film 1 and the intermediate film 2. Further, a pair of, for example, triangular auxiliary adhesive portions 4, 4 protruding inward from both side edges are provided as adhesive portions with the upper film 3 near the inner edge 2a of the intermediate film 2.

Since the packaging bag according to the present invention is configured as described above, as shown in FIG. 2, the bag body is held by one hand and the stationery 5 such as a ballpoint pen is held by the other hand, and the tip portion of the stationery is held. Is lightly pressed onto the exposed portion 2b of the intermediate film 2 and moved toward the inner edge 3a of the upper film 3 so that the exposed portion 2b acts as a guide and the edge 3a and the intermediate film 3b. Because the space between 2 opens
The stationery 5 is inserted into the bag body without being caught by the edge 3a. If both ends 3a '(see FIG. 1) of the edge 3a are not adhered to the intermediate film 2, the edge 3a is turned up when the stationery 5 is inserted, so that the insertion becomes easier.
Next, after the stationery 5 has completely entered the bag body, as shown in FIG. 3, both side edges in the vicinity of the auxiliary adhesive portions 4 and 4 are lightly pressed inward, and the intermediate film 2 together with the upper film 3 is pressed. Bends upward to close the opening. Therefore, if the one end 1a side of the bag body is tilted as it is, the rear end of the stationery 5 enters between the intermediate film 2 and the lower film 1,
The storage of the stationery 5 in the bag body is completed.

As described above, according to the present embodiment, the bag closing step after inserting the stationery is unnecessary, so that the cost of the packaging work can be significantly reduced. Also, the edge when inserting stationery
Since the stationery 5 does not get caught in the 3a, it is easy to automate the packaging work.

FIG. 4 shows an essential part of the second embodiment, in which cuts 2c, 2c in the directions along both side edges are formed in the parts corresponding to the base parts of the auxiliary adhesive parts 4, 4 of the intermediate film 2, respectively. Is.
Therefore, according to the present embodiment, since only the upper film 3 is connected to the auxiliary adhesive portions 4 and 4 and the adhesive portions on both side edges, the flexibility of this portion is increased and the auxiliary adhesive portions 4 and 4 are When the both side edges in the vicinity are pressed inward, the upper film 3 and the intermediate film 2 are more easily bent upward, and the work of closing the opening becomes more reliable.

FIG. 5 shows the essential parts of the third embodiment, which are the side edges of the intermediate film 2 and the lower film 1 in the vicinity of the auxiliary adhesive portions 4, 4 and the side edges of the upper film 3 and the lower film 1. The members of the department are non-bonded parts 6,6. Therefore, the same result as the flexibility of the base portions of the auxiliary adhesive portions 4 and 4 is increased, so that both side edges near the auxiliary adhesive portions 4 and 4 are pressed inward as in the second embodiment. At some times, the upper film 3 and the intermediate film 2 are more easily bent upward, and the action of closing the opening becomes more reliable.

FIG. 6 is a vertical cross-sectional view of the fourth embodiment, which has a structure similar to that of the first to third embodiments, in which a lower film 1 and an inter-film 2 are formed by alternately bending one film. Is formed by forming the upper film 3 and
It has the advantage of lower manufacturing costs.

FIG. 7 is a vertical sectional view of a modification of the fourth embodiment,
This is a bent end portion 1a 'with the lower film 1 of the intermediate film 2.
Are welded together, and there is an advantage that the strength of the bent end portion 1a 'is increased. The lower film 1 of the upper film 3
It goes without saying that the bent end portion 1b 'and the bent end portions 1a' and 1b 'may be welded together.

FIG. 8 is a vertical cross-sectional view of the fifth embodiment, in which a lower film 1 and an intermediate film 2 are formed by bending a single film in a structure similar to those of the first to third embodiments. The same effect as the fourth embodiment can be obtained.

FIG. 9 is a vertical sectional view of a modification of the fifth embodiment,
This is a bent end portion 1a 'with the lower film 1 of the intermediate film 2.
Are welded together, and the same effect as the modification of the fourth embodiment can be obtained.

FIG. 10 is a vertical cross-sectional view of the sixth embodiment. This is a structure similar to the first to third embodiments, in which a lower film and an upper film 3 are formed by bending a single film.
And are formed, and the same effect as the fourth embodiment can be obtained.

FIG. 11 is a vertical sectional view of a modification of the sixth embodiment,
This is formed by welding the bent end portion 1b 'with the lower film 1 of the upper film 3, and the same effect as the modification of the fourth embodiment can be obtained.

[Effect of device]

As described above, the packaging bag according to the present invention does not require the bag closing step after the insertion of the article, and can realize a large cost reduction of the packaging work. It has an important practical advantage that it is easy to automate the packaging work because it is not caught.

[Brief description of drawings]

1 (A), (B), (C), and (D) are respectively a perspective view of the first embodiment and FIG. 1 (A) taken along the lines BB, CC, and DD. Sectional views, FIGS. 2 and 3 are views showing an article insertion procedure in the first embodiment, and FIGS. 4 and 5 are perspective views of essential parts of the second and third embodiments, FIG. 6 and FIG. 7 is the fourth respectively
Longitudinal sectional views of the embodiment and its modification, FIGS. 8 and 9 are longitudinal sectional views of the fifth embodiment and its modification, respectively, and FIGS. 10 and 11 are sixth embodiment and its modification, respectively. FIG. 1 ... Bottom film, 1a ... one end, 1b ... other end, 1a ', 1
b '... bent end portion, 2 ... intermediate film, 2a, 3a ... inner edge, 2b ... exposed portion, 2c ... cut, 3 ... upper film, 4 ... auxiliary adhesive portion, 5 ... … Stationery, 6… Non-adhesive part.

Claims (8)

[Scope of utility model registration request] 1. A lower film, an intermediate film that is overlapped from one end of the lower film to a midway position, and has a peripheral edge portion other than an inner edge bonded to the lower film, and the other end of the lower film to the intermediate film. Consisting of an upper film that is overlapped to a midway position and has a peripheral edge portion other than the inner edge bonded to the lower film and the intermediate film, and both sides as an adhesive portion with the upper film near the inner edge of the intermediate film. A packaging bag provided with a pair of auxiliary adhesive portions protruding inward from the edges. 2. A lower film, an intermediate film, and an upper film, which are formed by alternately bending a single film, and the intermediate film is formed on the lower film from a bent end of the lower film to a middle position. Overlap and adhere both side edges to the lower film, overlap the upper film from a bent end with the lower film to a middle position of the intermediate film and adhere both side edges to the lower film and the intermediate film, A packaging bag provided with a pair of auxiliary adhesive portions that protrude inward from both side edges as an adhesive portion with the upper film near the inner edge of the intermediate film. 3. The packaging bag according to claim 2, wherein two films are welded at at least one bent end. 4. A lower film and an intermediate film formed by bending a single film, and an upper film separate from these films, wherein the intermediate film is positioned halfway from the bent end of the lower film. Up to the lower film and adhere both side edges to the lower film, stack the upper film from a non-folded end of the lower film to a midway position of the intermediate film, and apply a peripheral portion other than an inner edge to the lower film. A packaging bag which is adhered to a film and the intermediate film, and is provided with a pair of auxiliary adhesive portions protruding inward from both side edges as an adhesive portion with the upper film in the vicinity of an inner edge of the intermediate film. 5. A lower film and an upper film formed by folding a single film, and an intermediate film separate from these, wherein the intermediate film is located at a midway position from an unfolded end of the lower film. Up to the lower film, and the peripheral edge portion other than the inner edge is adhered to the lower film, the upper film is overlapped from the bent end with the lower film to the middle position of the intermediate film, and both side edges are the lower ends. A packaging bag which is adhered to a film and the intermediate film, and is provided with a pair of auxiliary adhesive portions protruding inward from both side edges as an adhesive portion with the upper film in the vicinity of an inner edge of the intermediate film. 6. The packaging bag according to claim 4, wherein two films are welded at the bent end. 7. The cut according to any one of claims 1 to 6, wherein a cut along the side edges is formed in a portion of the intermediate film corresponding to the base of the auxiliary adhesive portion. Packaging bag. 8. The non-adhesive portions are formed on both side edge portions of the intermediate film and the lower film and on both side edge portions of the upper film and the lower film in the vicinity of the auxiliary adhesive portion. The packaging bag according to any one of (1) to (6).