JPS5937470Y2 - packaging bag - Google Patents

Description

[Detailed description of the invention] The present invention relates to a packaging bag, and in particular, although it is a bag made of a synthetic resin sheet, the whole bag has good shape retention, and when the opening part is expanded, the word gap [-1 periphery] The present invention relates to a bag that can be held in a suitable manner and allows for easy loading and unloading of products.

The present invention is characterized by a bag body with a bottom in which a product storage part is formed between the front and back sheets: the bag body forms a header part with a thick sheet on the top; , while the front sheet constituting the bag body is made of a thin film, the back sheet constituting the bag body is a thick sheet: between the back sheet and both thick sheets constituting the header part. An opening that communicates with a part of the product storage is opened and accommodated, and when the opening is expanded, the periphery of the space "-1" is formed by both of the thick sheets.

Embodiments of the present invention will be described below in detail based on the drawings. In the first embodiment shown in FIGS. A header part 6 having a thick sheet 5 is formed in the second part of the bag body 1.

The front sheet 2 is a thin film, while the back sheet 3 is a thick sheet.

The thick sheet h5 that covers the header section and the thick sheet that covers the back sheet 3 are both made of synthetic paper or synthetic resin and have excellent shape retention properties. The film is a transparent or colored flexible synthetic resin film.

An opening 7 communicating with the product storage section 4 is provided between the lower end of the thick sheet 5 of the header section and the upper end of the back sheet 3, and both sheets 5 and 3 are opened in the opening 7. Overlapping portions 8 and 9 are provided in the vertical direction, respectively.

The lower end of the front sheet 2 extends behind the back sheet 1-3 and is welded 10 in the bag width direction on the back surface of the back sheet 3, thereby forming a bag bottom 11.

One part of the top sheet 2 is welded 12 in the bag width direction on the lower end surface of the header sheet 5, and the front sheet 2 is further extended to the back of the header sheet 5 to surround the header sheet 5. At the same time, welding 1 is performed in the bag width direction on the back side of the sheet 5.
3, and the extended end of the top sheet 2 is further extended downwardly from the welded portion 13 to form a sealing piece 14.

Accordingly, the sealing piece 14 extends downwardly over the space 7, and includes a pressure-sensitive adhesive 15 that adheres the sealing piece 14 and the backing sheet 3 to each other, and a release layer covering the adhesive. mold tape 16
It is equipped with

The bag 1 of the above configuration includes a header sheet 5 and a back sheet 3.
With the front sheet 2 welded to the bag body 1, both side edges 17 and 17 of the bag body 1 are melted and welded to form a rectangular shape as shown in FIG. 1.

However, as shown in the third figure [1
17, the sealing piece 14 is provided with a welding inhibitor 18 such as printing ink, so that the bag side edges 1
7. At the time of fusing in step 17, both side edges of the sealing piece 14 are also cut, but they are not welded to the back sheet 3, and the sealing piece 1
4 guarantees that the opening 7 can be opened and closed.3 Furthermore, the header section 6 is provided with a hanging hole 19.3 According to this first embodiment, the product can be placed in the product storage section 4 of the bag body 1. When putting in and taking out, the opening 7 may be expanded as shown in the fourth figure.

In this expanded state, the opening periphery of the opening 7 is formed by the overlapped parts 8 and 9 of both the thick sheets 5 and 3, which are the header sheet and the back sheet, so that the opening periphery retains its shape and the product is Easy to put in and take out.

In order to seal the opening 7 after storing the product, the sealing piece 14 and the back sheet 3 may be adhered to each other using the adhesive 15 after removing the release tape 16.

In the second embodiment shown in FIG. 5, the top sheet 2 is welded 20 at the upper end of the header sheet 5, the upper end of the front sheet 2 ends at the welded portion 20, and the header sheet 5
does not extend behind the

On the other hand, a sealing piece 14 made of a flexible synthetic resin film separate from the top sheet is provided on the back side of the header sheet 5, and the upper end of the sealing piece 14 is attached to the back side of the header sheet 5 in the bag width direction. Welding 13 to the bag opening 7 by the sealing piece 14
is covered.

The other configurations are the same as the first example.

In the third embodiment shown in FIG. 6, the upper end of the top sheet 2 is extended behind the header sheet 5, and is welded 13 to the back surface of the header sheet 5. Front sheet 2 has been completed.

On the other hand, the lower end of the front sheet 2 has a covering part 21 extending upward from the welded part 10 along the back sheet 3 behind the back sheet 3, and the covering part 21 is provided on the back of the upper end of the back sheet 3. The sealing piece 14 is formed by welding 22 in the width direction and extending the covering part 21 further upward from the welding part 22.

The sealing piece 14 covers the bag opening 7 and extends behind the header part 6, and the sealing piece 14 and the header part 6 are provided with an adhesive 15 with a release tape 16 attached to each other. .

The other configurations are the same as those of the first embodiment.

In the fourth embodiment shown in FIGS. 7 and 8, the header sheet 5 and the back sheet 3, which are made of thick sheets, do not overlap as described above, and the butt ends 23
．． 24, and an opening 7 is formed between the abutted ends.

The top sheet 2 is constructed in substantially the same manner as in the first embodiment, and includes a sealing piece 14.

According to the fourth embodiment, when the opening 7 is expanded, the peripheral edge of the opening is formed by the abutting ends 23 and 24 of the header sheet 5 and the back sheet 3, and its shape is maintained.

9 and 10 show modified embodiments of the bottom of the bag,
In FIG. 9, the lower end of the front sheet 2 is welded to the lower end surface of the back sheet 3 in the bag width direction without extending the front sheet 2 behind the back sheet 3.

Further, in FIG. 10, a gusset 25 is further provided on the bag bottom 11 formed by the top sheet 2.

Such a modified embodiment can be applied to any of the bags according to the first to fourth embodiments.

In this invention, as a result of the above-mentioned exploitation, the front sheet 2 is made of a flexible thin film, while the back sheet 3 is made of a thick sheet, so the entire bag has good shape retention and is a product. The packaging is stable, and since the header section is made of a thick sheet, it has an excellent display effect.

In particular, in the present invention, since the opening 7 is formed between the header sheet 15 and the back sheet 3, both of which are thick and have excellent shape retention, when the opening 7 is expanded, the periphery of the opening is Therefore, it has excellent shape retention properties around the opening 7, and has a particularly remarkable effect of making it easy to take products in and out of the opening 7.

[Brief explanation of the drawing]

Figure 1 is a rear view showing the first embodiment of the present invention, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, Figure 3 is a sectional view taken along the line ■-■ in Figure 1, and Figure 4 is a sectional view taken along the line ■-■ in Figure 1. A perspective view of the bag according to the same embodiment with its opening expanded; FIG. 5 is a vertical cross-sectional view of a main part showing a second embodiment of the present invention; and FIG. 6 is a third embodiment of the present invention. longitudinal section,
FIG. 7 is a longitudinal sectional view showing a fourth embodiment of the present invention, FIG. 8 is a perspective view of the bag according to the fourth embodiment with the opening thereof expanded, and FIGS. 9 and 10 are both FIG. 6 is a longitudinal sectional view of a main part showing a modified embodiment of the bag bottom. 1...Bag body, 2...Top sheet, 3...
...Back sheet, 4...Product storage section, 5...
...Header section sheet, 6...Header section, 7
...Opening, 14... Sealing piece.

Claims (1)

[Scope of utility model registration request] In a bag body with a bottom in which a product storage part is formed between the front and back sheets: The bag body forms a header part with a thick sheet at the -L part, and the front sheet constituting the bag body is replaced with a thin sheet. On the other hand, the backing sheet constituting the bag body is replaced with a thick sheet; an opening communicating with the product storage section is inserted between the backing sheet L- and both thick sheets constituting the header section. When the interword ``-dark[;'' is expanded, the opening L1
A packaging bag characterized in that a peripheral edge is formed by both of the thick sheets.