JPS6023151A - Bag for packing and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a packaging bag and a method for manufacturing the same. The present invention relates to a packaging bag in which the upper part of the other piece is formed as a sealing piece, and to an improvement in a method for manufacturing the same.

As mentioned above, the applicant has already developed a packaging bag in which one piece of the packaging body is extended from the other piece to form a part of the header, and the other piece is formed as a sealing piece. We are developing bags for use.

That is, in the packaging bag according to the invention, one piece of the packaging body made of a synthetic resin film is extended from the other piece and an insertion piece is placed inside to form a part of the header, and a compartment seal part is formed at the lower end of the part of the header. At the same time, it is manufactured by heat-sealing both side edges of the housing body, and the upper part of the other piece of the housing body is formed as a sealing piece without being sealed.

However, in the packaging bag manufactured in this way, the upper end of the other piece of the packaging body is located at approximately the same position as the compartment sealing part, and therefore the opening of the packaging body formed between the upper end of the other piece and one piece. Since the section is located directly below the compartment seal section, there is a fatal drawback in that when storing the product through the opening, a part of the header becomes an obstacle, making it difficult to store the product.

In order to solve these drawbacks, the present invention provides a package in which one piece of the main body is extended from the other piece to form a part of the header, and the upper part of the other piece is formed as a sealing piece. An object of the present invention is to provide a completely new and useful packaging bag that can non-electrically facilitate the work of storing products in a packaging body by improving the packaging bag, and a method for manufacturing the same.

In order to achieve such an object, the present invention provides a packaging bag in which one piece of the packaging body made of a thermoplastic material is extended from another piece, and a part of the header is formed by the extended piece. The upper width part of the other piece is bent outward to form a downwardly facing sealing piece, and an opening is formed at the position of the bent part of the other piece.

In the packaging bag having such a structure, before the heat-sealing of the packaging body, the upper end of the other piece of the packaging body is bent outward to form a sealing piece, and the sealing piece and other parts of the packaging body are A heat welding prevention means is provided at least on the side edge between the pieces,
After that, both edges of the main body are heat-sealed and manufactured.

In the present invention, the upper edge of the other piece of the packaging body is bent outward before the packaging body is heat-sealed, so the opening of the packaging bag after manufacturing is formed at the folded part of the other piece of the bag body. Since it is formed at a position separated from the compartment seal at the lower end of the header part, the header part may become an obstacle when storing products through the opening of the packaging body. Therefore, a remarkable effect has been obtained in that the product storage work is much easier than in the past.

Moreover, since a heat welding preventing means is provided between the sealing piece and the other bag body piece, even if the both sides of the bag body are thermally welded and sealed after the other piece is bent, the sealing piece and the bag body will never be separated. There is no seal between the other pieces, so the sealing function of the opening is never impaired.

Furthermore, the sealing piece of the packaging bag after manufacturing is formed by folding the other piece of the packaging body outward and facing downward.
This will have a synergistic effect on the ease of product storage work described in item 2.

Hereinafter, regarding the embodiments of the present invention, first, a method for manufacturing a packaging bag will be described.

First, the belt-shaped thermoplastic synthetic resin film 1 is conveyed 64, and as shown in FIG. Let's extend it rather than take it apart.

Next, as shown in Fig. 2, the upper end of the other piece is bent outward to form the sealing piece 4 facing downward, and the sealing piece 4, which will be heat-sealed later, is heat-welded at a predetermined position between the other piece. A blocking ink 15 is applied, and as shown in the figure, a mold release material 6 is provided by applying a silicone resin to the outside of the sealing piece 4 via a pressure-sensitive adhesive 5.

Next, as shown in Fig. 3, a piece 2 made of synthetic paper is ta-fed onto a piece a extending from the other piece, and the extended piece a is bent and the piece 2 is placed inside to form a part of the header. 3
and heat sealing the lower end of the header portion 3 to form a compartment seal portion 12.

Thereafter, as shown in FIG. 4, hanging holes 7 are bored at predetermined intervals in the header part 3, and the film 1 is heat-fused at predetermined intervals, that is, at the positions of both side edges 9.9 of the mounting body 8. Once sealed, a packaging bag 10 as shown in FIG. 5 will be manufactured.

As shown in the figure, the packaging bag lO manufactured in this way is made by folding synthetic paper into a film in which one piece a of the packaging body 8 made of thermoplastic synthetic resin is extended beyond the other pieces. The header part 3 is formed by inserting the sealing piece 2 inside the compartment sealing part 12, and then bending the upper end of the other piece of the main body 8 outward to form a downward sealing piece 4. Opening at the position of the bent part 11 of the other piece folded together]3
It is constructed by forming.

That is, by bending the upper end of the other side of the main body 8 outward, an open l'' portion 13 is formed at the bent portion 11, and this opening 13 is formed by bending the upper end of the other side of the main body 8 outward.
It is provided between the compartment seal part 12 at the lower end and the product 14, so that when storing the product 14 from the -C opening 13 into the packaging body 8, a part of the header will never become an obstacle. This makes it very easy to store the items. Furthermore, since the sealing piece 4 is formed by bending the other pieces outward and facing downward, this has a synergistic effect on the ease of the above-mentioned product storage operation.

In the above manufacturing process, before thermally sealing the side edges 9 and 9 of the packaging body 8, thermal welding prevention ink 15 is applied in advance to the side edges between the other side of the packaging body 8 and the sealing piece 4. Therefore, the sealing piece 4 and the other pieces are never welded together even after heat-sealing, and the sealing function of the opening 13 is never impaired. Therefore, when the product 14 is stored in the packaging bag 10 and sealed with the sealing piece 4 as shown in FIG. The bag 10 will be hung and displayed.

In the above embodiment, the other piece of the packaging body 8 and the sealing piece 4 are
The thermal welding prevention ink 15 is used as a thermal welding prevention means between the two, but the thermal welding prevention means described in "2" is by no means limited to this. It is also possible to insert the mold material between the other sealing pieces 4 mentioned above.

Further, in this embodiment, this heat welding prevention means is provided only at a predetermined position where heat sealing is to be performed between the sealing piece 4 and the other part of the packaging body 8, that is, at the side edge, but the present invention is not limited to this, for example. It may be provided entirely between the other piece and the sealing piece. In short, it is sufficient that it is provided at least on the side edge between the other piece and the sealing piece 4.

Further, in this embodiment, the sealing piece is formed by bending the other piece of the packaging body 8 before the formation of the header part 3, but this is not limited to this, and the sealing piece may be formed after the header part 3 is formed. Often there are no questions asked about the procedure. In short, the bending of the other pieces only needs to be carried out before the heat sealing of both side edges 9, 9 of the mounting body 8.

Further, the form of the packaging bag 10 and the material of the packaging body 80 are by no means limited to the examples described above; for example, in this example, both pieces a and b of the packaging body 80 are made of thermoplastic synthetic resin films. However, the present invention is not limited to this, and as shown in FIG. 6, one piece a may be made of synthetic paper and the other piece a may be made of film. Furthermore, in this case, it is also possible to form a gusset on the bottom 16 as shown in FIG. 7, and form the packaging bag 10 as a so-called standing bag that can stand up when storing the product 14, as shown in FIG. .

The design can be changed in any way within the intended scope of the espoused invention.

[Brief explanation of the drawing]

FIG. 1 shows the film bending process, (a) is a plan view, and (b) is a sectional view taken along the line A-A of (a). Figure 2 shows the process of folding the upper end of the other part of the bag body, (a)
is a plan view, and (b) is a sectional view taken along line 8-13 of (a). FIG. 3 shows the formation process of a part of the header, (A) is a plan view, and (B) is a sectional view taken along the line C--C of (A). FIG. 4 is a plan view showing the hanging hole drilling process. FIG. 5 shows the packaging bag after manufacture, (a) is a front view, (b) is a cross-sectional view taken along the line D-D of (a), and (c) is a cross-sectional view of the used state. FIG. 6 is a sectional view of a packaging bag according to another embodiment. FIG. 7 shows a packaging bag according to another embodiment, in which (a) is an enlarged sectional view of the main part, and (b) is a perspective view when the product is stored. 3...Header part 4...Sealing piece 8...Packaging body 9.9...Both side edges 10...Packaging bag 13...Opening a...-piece
b... Other applicant: Shoei Seibag Co., Ltd. agent Patent attorney Binding Noboru Figure 1 al Figure 2 (b) d 1) 1 Figure 3 dll') 2 Figure 4 15 159 Figure 5 Figure 6 Figure 7 Voluntary procedure amendment]! Display of JT case 1982 Patent Application No. 132045 2 Name of the bag for packaging and its manufacturing method 3 Relationship with the case to be amended Applicant Address Name Title Teruei Seibag Co., Ltd. 4 Agent No. 542 Address Address Nagahori Yachiie Building, 1-11-9 Minamisenba, Minami-ku, Osaka-shi, Osaka Telephone: (06) 271-79087 Subject of amendment 8 Contents of amendment (1) The scope of the claims has been amended as shown in the attached sheet. "Seal" on page 7, line 18 of the specification has been corrected to "seal by adhering it to one side a of the packaging body 8 directly under the compartment seal portion 12." (3) "Nono deru." in the first line of page 9 of the specification and in the second line of the same page
Insert the following sentence between the line "further". [Furthermore, in this embodiment, one part 74a of the mounting body 8 is extended from the other part b, and the header part 3 is formed by inserting the header 2 into the folded film. This piece 2
For example, the header part 3 may be formed by simply welding the cover piece 2 to the extended sealing piece 4'' as shown in FIG. Further, in this embodiment, the sealing piece 4 is configured to be adhered to one side a of the main body 8 directly below the compartment sole part 12, but it is not necessarily necessary to adhere it to the lower side of the compartment seal part 12. -For example, it may be configured so that it is bonded with the nodah part 3. Go 1 "Figure.j" on page 10, line 9 of the specification.
Insert the following text between "l-3...header part" on line 10 of the same page. [-FIG. 8 is a sectional view of another embodiment. (5) Figure 8 was added to the drawings as shown in the attached sheet. 2. Scope of Claim 1: Other uses of the main body 8 made of thermoplastic material: - hair 1
In a packaging bag consisting of an inversely formed vertical opening at the bottom part 3 through the partition seal part 12 by the left 2-piece a of 1, the upper end of the other side of the packaging body 8 is bent outward and the upper end of the other side of the packaging body 8 is bent outward. A packaging bag characterized in that a sealing piece 4 is formed and an opening 13 is formed at the position of the bent part 11 of the other folded piece. 2. One piece a of the housing body 8 made of a thermoplastic material is extended from the other piece, and the header part 3 is formed by the extended Aa, and then both side edges 9, 9 of the housing body 8 are attached to the header part 3. In the method for manufacturing a packaging bag in which both side edges of the packaging body 8 are simultaneously heat-sealed and sealed, both side edges 9 of the packaging body 8 are manufactured.
C) From the time of heat-cutting sealing, the mounting body 8 and other g-b
The upper end portion is bent outward to form a sealing piece 4 facing downward, and a heat/locking means is provided at least on the side edge between the sealing piece 4 and the other piece of the packaging body. A method of manufacturing a packaging bag. 8th L - Yo porridge

Claims (1)

[Claims] l One piece a of the housing body 8 made of a thermoplastic material is extended from the other piece, and the partition sealing portion 1 is formed by the extended piece a.
In the packaging bag in which a header part 3 is formed through a header part 2, the upper end of the other piece of the packaging body 8 is bent outward to form a downward sealing piece 4, and the bent other piece is folded outward. A packaging bag characterized in that an opening 13 is formed at the position of the folded part 11 of the bag. 2. One piece a of the housing body 8 made of a thermoplastic material is extended from the other piece, the header part 3 is formed by the extended piece a, and then both side edges 9.9 of the housing body 8 are attached to the header part. 30. In the method for manufacturing a packaging bag by simultaneously heat-sealing both side edges 9.9 of the packaging body 80, both side edges 9.9
Before heat-melting sealing, the upper end of the other piece of the packaging body 8 is bent outward to form the sealing piece 4 facing downward, and at least the side between the sealing piece 4 and the other piece of the packaging body is bent outward. A method for manufacturing a packaging bag, characterized in that the bag is manufactured by providing heat welding prevention means on the edge.