JP7113615B2 - Packaging bag, manufacturing method of packaging bag - Google Patents

Description

TECHNICAL FIELD The present invention relates to a packaging bag formed using a sheet material and a method for manufacturing the packaging bag.

As a packaging bag for packaging an article, one formed using a sheet material is known. For example, as a packaging bag for packaging sandwiches, one formed using two main body sheets arranged so as to overlap is known. The packaging bag includes a pair of side connecting portions formed by connecting both side portions of one body sheet extending in one direction and both side portions of the other body sheet extending in the one direction, and One end side connection portion formed by connecting two main body sheets across one end portion of a pair of side connection portions, and two sheets between the other end portions of the pair of side connection portions in the one direction and an opening formed by not connecting the main sheet. A storage portion for storing an article is formed in a region surrounded by the pair of side connecting portions, the one end side connecting portion, and the opening (see Patent Document 1).

When storing an article in such a packaging bag, the article is inserted into the storage section through the opening, and the opening is closed with the portion extending from the opening to form a closing wall. Then, by attaching a label or an adhesive tape printed with product information or the like to the closing wall, the state where the opening is closed (the state where the product is packaged) is maintained.

JP 2016-104645 A

However, in the packaging bag as described above, since the opening is widened so that the article can be inserted into the storage portion, tension is applied to the ends of the pair of side connecting portions on the side of the opening. When such tension is applied to the ends of the pair of side connecting portions, the connection between one main body sheet and the other main body sheet is released at the ends (for example, if they are connected by heat sealing, , peeling or breakage occurs), and the separation progresses toward the other end side of the side connecting portion (that is, the packaging bag is damaged).

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a packaging bag that can be prevented from being damaged when the opening is widened. Moreover, let it be a subject to provide the manufacturing method of such a packaging bag.

A packaging bag according to the present invention is formed using two main body sheets that are arranged so as to overlap each other, one of the main body sheets has a pair of side end portions extending in one direction, and the other of the main body sheets has the one side end portion. A pair of side connecting portions extending in one direction formed by connecting a pair of side end portions extending in a direction, and two body sheets formed by connecting at a position on one end side in the one direction. A one-end-side connecting portion formed between one end portions of a pair of side connecting portions, and two body sheets between the other end portions of the pair of side connecting portions in the one direction. A packaging bag having an opening formed by not being connected, and a storage portion for storing an article is formed in an area surrounded by a pair of side connection portions and one end side connection portion, at least one The side connecting portion of is provided with a side connecting portion main body extending in the one direction and a projecting connecting portion protruding from the side connecting portion main body toward the other side connecting portion side.

According to such a configuration, at least one of the side connecting portions includes a side connecting portion main body extending in the one direction and a protruding connecting portion protruding from the side connecting portion main body toward the other side connecting portion. Prepare. Here, when the opening formed between the other end portions of one of the side connecting portions is widened, one main body sheet and the other main body sheet and the other main body sheet are positioned at the positions of the other end portions of the pair of side connecting portions. A force is applied to separate the sheet. However, by providing the protruding connecting portion, it becomes difficult to separate one main body sheet from the other main body sheet at the position where the protruding connecting portion is provided. As a result, it is possible to prevent the separation of one main body sheet and the other main body sheet from progressing from the projecting connecting portion toward the one end side of each side connecting portion. It is possible to prevent the packaging bag from being damaged.

It is preferable that the protruding connecting portion is formed in a planar shape that spreads from the side connecting portion main body included in the one side connecting portion toward the other side connecting portion.

According to such a configuration, the projecting connecting portion is formed in a planar shape that spreads from the side connecting portion body included in one of the side connecting portions toward the other side connecting portion. As a result, separation of one main body sheet and the other main body sheet is more effectively prevented at the position where the projecting connecting portion is provided. Therefore, it is possible to more effectively prevent the packaging bag from being damaged at the side connecting portion.

A method for manufacturing a packaging bag according to the present invention is any one of the above-described methods for manufacturing a packaging bag, and includes a polymerization step in which a pair of long sheet raw materials are fed out and overlapped, and a pair of sheets after the polymerization step. A longitudinal direction connecting step of connecting a pair of sheet materials at alternate positions in the width direction in the longitudinal direction of the original fabric to form a plurality of first connecting portions extending in the longitudinal direction, and a pair after the longitudinal direction connecting step A cutting step of cutting a pair of original sheet material on a plurality of planned cutting lines extending in the width direction at a plurality of positions spaced apart in the longitudinal direction of the sheet material, and simultaneously with the cutting step or a cutting step and a width direction connecting step of connecting a pair of raw sheets at a position including each planned cutting line to form a plurality of second connecting portions extending in the width direction, and each first connecting portion is adjacent to each other. It is formed so as to intersect with two matching planned cutting lines.

According to such a configuration, the packaging bag is formed between a pair of planned cutting lines adjacent in the longitudinal direction by performing the longitudinal connecting step, the width direction connecting step, and the cutting step. Specifically, a pair of side connecting portions are formed by a pair of second connecting portions that are adjacent in the longitudinal direction. In addition, since the first connecting portion is formed so as to intersect a pair of planned cutting lines that are adjacent in the longitudinal direction, the first connecting portion is separated from the portion between the pair of planned cutting lines and the other portion by the cutting step. divided into As a result, the portion between the pair of planned cutting lines in the first connecting portion can form the one end side connecting portion of the one packaging bag formed between the pair of planned cutting lines. can form a projecting connecting portion of another packaging bag formed adjacent to the one packaging bag. In other words, one end side connecting portion of one packaging bag and a projecting connecting portion of another packaging bag can be formed by one first connecting portion, so that packaging bags can be manufactured efficiently.

As described above, according to the present invention, it is possible to prevent damage when the opening is widened.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which showed the component material of the packaging bag which concerns on one Embodiment of this invention. The top view of the packaging bag which concerns on the same embodiment. The perspective view at the time of accommodating articles|goods in the packaging bag which concerns on the same embodiment. The perspective view which showed the superposition|polymerization process of the manufacturing method of the packaging bag which concerns on one Embodiment of this invention. The perspective view which showed the longitudinal direction connection process of the manufacturing method of the packaging bag which concerns on the same embodiment. A perspective view showing a state in which the first connecting portion formed in the longitudinal connecting step of the manufacturing method of the packaging bag according to the same embodiment intersects the planned cutting line. The perspective view which showed the cutting process and width direction connection process of the manufacturing method of the packaging bag which concerns on the same embodiment. The top view which showed the sheet|seat body formed by the cutting process of the manufacturing method of the packaging bag which concerns on the same embodiment.

Embodiments of the present invention will be described below with reference to FIGS. In the drawings below, the same reference numerals are given to the same or corresponding parts, and the description thereof will not be repeated.

The packaging bag 1 according to this embodiment is formed using a sheet material, as shown in FIG. The sheet material is not particularly limited, and for example, at least one selected from a resin film, a paper material, a cloth material, and the like can be used, and a laminate of these materials may also be used.

Moreover, the packaging bag 1 is formed by using two main body sheets 2, 2 arranged so as to overlap each other, and a strip-shaped sheet 3 arranged between the two main body sheets 2, 2. As shown in FIG. The two main body sheets 2, 2 are formed in a trapezoidal shape such that the distance between both ends in the second direction narrows toward one end in the first direction.

Each of the two body sheets 2, 2 has a pair of side ends 2c, 2c extending in the first direction. The pair of side end portions 2c, 2c includes a header forming region 2g formed at one end portion of each main body sheet 2 in the first direction (the header forming region 2g will be described later) and each main body sheet in the first direction. 2 is formed between the non-connected region 2k (the non-connected region 2k will be described later) formed at the other end of the terminal 2 .

One of the two body sheets 2, 2 (hereinafter also referred to as one body sheet 2a) has a pair of side ends 2c, 2c, and the other of the two body sheets 2, 2 ( A pair of side ends 2c, 2c provided on the other main body sheet 2b) are connected to each other. Thereby, as shown in FIG. 2, a pair of side connecting portions 1a, 1a extending in the first direction are formed. The method of connecting the pair of side ends 2c, 2c provided on one body sheet 2a and the pair of side ends 2c, 2c provided on the other body sheet 2b is not particularly limited. It may be a method of heat-sealing, or a method of welding accompanying fusing as described later.

Returning to FIG. 1, one main body sheet 2a (or the other main body sheet 2b) has a planned connection area 2d that is connected to the other main body sheet 2b (or the one main body sheet 2a). The connection planned region 2d includes a one end side connection planned region 2e formed between one ends of the pair of side ends 2c, 2c in the first direction, and one (or the other) side in the first direction. It is composed of a protruding planned connection area 2f that protrudes from the other end of the end 2c toward the other (or one) side end 2c (specifically, spreads in a plane). That is, the one-end-side planned connection region 2e is formed at a position on one end side of each main body sheet 2 in the first direction. By connecting the one end side planned connection regions 2e of the main body sheets 2 to each other, as shown in FIG. A connecting portion 1b is formed. The method for connecting one main body sheet 2a and the other main body sheet 2b is not particularly limited. There may be.

Returning to FIG. 1, by connecting the projecting connection planned regions 2f of the main body sheets 2 to each other, as shown in FIG. Part 1c is formed. That is, one side connecting portion 1a (or the other side connecting portion 1a) includes a side connecting portion main body 1d extending in the first direction and a side connecting portion main body 1d extending from the side connecting portion main body 1d to the other side connecting portion 1a. A protruding connecting portion 1c protruding (specifically, spreading in a plane) to the side (or to the side of one side connecting portion 1a) is provided.

In addition, each of the main body sheets 2, 2 includes a header forming region 2g extending from the one end side planned connection region 2e to one end side in the first direction. The header forming region 2g includes a pair of first header forming end portions 2h, 2h extending from one end portion of the pair of side end portions 2c, 2c in the first direction to one end side of each main body sheet 2 in the first direction. , a region surrounded by a second header forming end portion 2i formed between one end portions positioned in the extending direction of the pair of first header forming end portions 2h, 2h, and one end side connection planned region 2e (in this embodiment, a rectangular area).

Then, the pair of first header forming ends 2h, 2h provided on one main body sheet 2a and the pair of first header forming ends 2h, 2h provided on the other main body sheet 2b are connected to each other, so that FIG. , a pair of header side connecting portions 1e, 1e extending in the first direction are formed. Thereby, a header portion 1f is formed on one end side of the packaging bag 1 in the first direction. The second header forming end portions 2i of the main body sheets 2, 2 may or may not be connected to each other. The method for connecting the pair of first header forming ends 2h, 2h provided on one main body sheet 2a and the pair of first header forming ends 2h, 2h provided on the other main body sheet 2b is particularly limited. Instead, for example, it may be a method of heat-sealing in a belt shape, or may be welding accompanying fusing as described later.

Further, one main body sheet 2a has a cut portion 2j formed by linearly cutting the header forming region 2g. The cut portion 2j is formed (arc-shaped in the present embodiment) so that both ends are located closer to the one end side planned connection region 2e than the central portion.

In addition, one body sheet 2a (or the other body sheet 2b) has a non-connection region 2k that is not connected to the other body sheet 2b (or one body sheet 2a) at the other end in the first direction. The non-connection region 2k is formed in a region on the other end side of each main body sheet 2 in the first direction from the other end portion of the pair of side end portions 2c, 2c (that is, the projected connection planned region 2f). Thereby, as shown in FIG. 2, an opening 1g is formed at the other end of the packaging bag 1 in the first direction.

Returning to FIG. 1, the belt-shaped sheet 3 is arranged along the first direction and attached to one main body sheet 2a. Moreover, as shown in FIG. 2, one end of the belt-shaped sheet 3 in the first direction extends between both ends of the notch 2j (specifically, a recessed notch) in the state where the packaging bag 1 is formed. 2j). As a result, one main body sheet 2a is cut along the belt-shaped sheet 3 by pinching the area between both ends of the cut portion 2j in one of the main body sheets 2a and pulling the one end of the belt-shaped sheet 3 together. That is, the belt-shaped sheet 3 functions as a so-called cut tape.

As shown in FIG. 2, the packaging bag 1 configured as described above has a storage portion 1h for storing articles in a region surrounded by a pair of side connecting portions 1a, 1a and one end side connecting portion 1b. be done. Then, as shown in FIG. 3, by opening the opening 1g, the article X can be stored inside the storage portion 1h through the opening 1g.

The packaging bag 1 configured as described above can be manufactured by the following method. Specifically, first, as shown in FIG. 4, a pair of long sheet raw fabrics 10 are fed out in the longitudinal direction and overlapped (polymerization step). At this time, cut portions 2j are formed alternately in the width direction along the longitudinal direction in one sheet material 10a, and the belt-shaped sheet 3 is attached along the width direction.

After the polymerization step, as shown in FIG. 5, the pair of original sheet fabrics 10, 10 are connected at alternate positions in the width direction in the longitudinal direction of the pair of original sheet fabrics 10, 10, and the first extending in the longitudinal direction is connected. A plurality of one connecting portions 10b are formed (longitudinal connecting step). As shown in FIG. 6, each first connecting portion 10b has a plurality of planned cutting lines (virtual lines) extending in the width direction at a plurality of positions spaced apart in the longitudinal direction of the pair of original sheets 10, 10. Line) L1 is formed so as to intersect two adjacent planned cutting lines L1, L1.

After the longitudinal connecting step, the pair of raw sheets 10, 10 are cut on each planned cutting line L1 (cutting step). As a result, the area between the adjacent two planned cutting lines L1, L1 is separated, and the sheet 10c shown in FIG. 7 is formed. At this time, the pair of original sheet fabrics 10, 10 are cut by fusion cutting, so that the pair of original sheet fabrics 10, 10 are connected (welded) at a position including each planned cutting line L1, and are cut in the width direction. A pair of extending second connecting portions 10d are formed on the sheet body 10c (width direction connecting step). That is, in the present embodiment, the cutting step and the width direction connecting step are performed simultaneously.

As shown in FIG. 8, the sheet 10c formed as described above has a header portion on one end side in the first direction. Then, both sides of the other end portion in the first direction are cut along the planned cutting line L2, thereby forming the opening 1g and the non-connecting regions 2k of the main body sheets 2, as shown in FIG.

As described above, according to the packaging bag 1 and the manufacturing method of the packaging bag 1 according to the present embodiment, it is possible to prevent damage when the opening 1g is widened.

That is, at least one of the side connecting portions 1a includes a side connecting portion main body 1d extending in one direction and a projecting connecting portion 1c protruding from the side connecting portion main body 1d toward the other side connecting portion 1a. Prepare. Here, when the opening 1g formed between the other ends of one of the side connecting portions 1a is widened, one main body sheet 2 is positioned at the other end of the pair of side connecting portions 1a. and the other body sheet 2 are separated from each other. However, by providing the projecting connecting portion 1c, it becomes difficult to separate one main body sheet 2 and the other main body sheet 2 at the position where the projecting connecting portion 1c is provided. As a result, it is possible to prevent the separation of one main body sheet 2 and the other main body sheet 2 from progressing from the projecting connecting portion 1c toward one end side of each side connecting portion 1a. It is possible to prevent the packaging bag 1 from being damaged at the side connecting portion 1a.

Further, the protruding connecting portion 1c is formed in a planar shape extending from the side connecting portion main body 1d provided in one of the side connecting portions 1a toward the other side connecting portion 1a. As a result, separation of one main body sheet 2 and the other main body sheet 2 is more effectively prevented at the other end of the side connecting portion 1a provided with the projecting connecting portion 1c. Therefore, it is possible to more effectively prevent the packaging bag 1 from being damaged at the side connecting portion 1a.

Moreover, the packaging bag 1 is formed between a pair of planned cutting lines L1 adjacent in the longitudinal direction by performing the longitudinal connecting step, the width direction connecting step, and the cutting step. Specifically, a pair of side connecting portions 1a are formed by a pair of second connecting portions 10d adjacent in the longitudinal direction. In addition, since the first connecting portion 10b is formed so as to intersect the pair of projected cutting lines L1 adjacent in the longitudinal direction, the first connecting portion 10b can be cut into portions between the pair of projected cutting lines L1 by the cutting step. divided into other parts. As a result, the portion between the pair of projected cutting lines L1 in the first connecting portion 10b can form the one end side connecting portion 1b of the one packaging bag 1 formed between the pair of projected cutting lines L1. The protruding connection portion 1c of the other packaging bag 1 formed adjacent to the one packaging bag 1 can be formed by another portion of the one connection portion 10b. That is, since the one end side connecting portion 1b of one packaging bag 1 and the projecting connecting portion 1c of the other packaging bag 1 can be formed by one first connecting portion 10b, the packaging bag 1 can be manufactured efficiently. can be done.

It should be noted that the packaging bag and the manufacturing method of the packaging bag according to the present invention are not limited to the above embodiments, and various modifications are possible without departing from the gist of the present invention. In addition, the configurations, methods, etc. of the plurality of embodiments described above may be arbitrarily adopted and combined (even if the configurations, methods, etc., according to one embodiment are applied to the configurations, methods, etc., according to other embodiments). well), and furthermore, it is of course possible to arbitrarily select configurations, methods, and the like according to various modifications described below and employ them in the configurations, methods, and the like according to the above-described embodiments.

For example, in the above embodiment, the cutting step and the width direction connecting step are configured to be performed at the same time, but the invention is not limited to this. For example, the cutting step is performed after the width direction connecting step. may be configured.

Further, in the above-described embodiment, the pair of side connecting portion main bodies 1d, 1d are formed in a linear shape (specifically, the edges of the two main body sheets 2, 2 are welded together). However, it is not limited to this, and for example, it may be formed in a strip shape.

In the above embodiment, the projecting connecting portion 1c is formed at the other end of each side connecting portion 1a, but the present invention is not limited to this, and one end from the other end of each side connecting portion 1a. A protruding connecting portion 1c may be formed at a position (near the other end portion) away from the portion side.

DESCRIPTION OF SYMBOLS 1... Packaging bag 1a... Side connection part 1b... One end side connection part 1c... Projection connection part 1d... Side connection part main body 1e... Header side connection part 1f... Header part 1g... Opening part , 1h... accommodating portion, 2... main body sheet, 2e... one end side planned connection area, 2f... projecting connection planned area, 2g... header forming area, 2h... first header forming end, 2i... second header forming end, 2j... Notch portion 2k... Non-connected region 3... Belt-shaped sheet 10... Original sheet material 10b... First connecting part 10c... Sheet body 10d... Second connecting part L1... Planned cutting line L2 … Planned cutting line, X … Article

Claims (3)

It is formed using two main body sheets arranged so as to overlap,
A pair of side connecting portions extending in one direction formed by connecting a pair of side end portions extending in one direction of one body sheet and a pair of side end portions extending in said one direction of the other body sheet. and a one-end-side connecting portion formed by connecting two main body sheets at a position on the one-end side in the one direction, the one-end-side connecting portion formed between one ends of a pair of side connecting portions. and an opening formed by not connecting the two main body sheets between the other ends of the pair of side connecting portions in the one direction, and the pair of side connecting portions and the one end side connecting portion A packaging bag in which a storage portion for storing an article is formed in an enclosed area,
At least one of the side connecting portions includes a side connecting portion main body extending in the one direction, and a projecting connecting portion projecting from the side connecting portion main body toward the other side connecting portion ,
The projecting connecting portion is formed at the other end forming an edge of the side connecting portion in the one direction,
A packaging bag for sandwiches, wherein a cut tape is attached along the one direction to the one main body sheet . 2. The packaging bag for sandwiches according to claim 1, wherein the protruding connecting portion is formed in a planar shape that spreads from a side connecting portion main body of one of the side connecting portions toward the other side connecting portion. A method for manufacturing the packaging bag according to claim 1 or 2,
A polymerization step in which a pair of long sheet materials are fed out and overlapped, and a pair of sheet materials after the polymerization step are connected at alternate positions in the width direction in the longitudinal direction of the pair of sheet materials. a longitudinal connecting step of forming a plurality of first connecting portions extending in the longitudinal direction; and extending in the width direction at a plurality of positions spaced apart in the longitudinal direction of the pair of original sheets after the longitudinal connecting step. A cutting step of cutting a pair of raw sheets on a plurality of planned cutting lines, and simultaneously with the cutting step or before the cutting step, the pair of raw sheets are connected at a position including each planned cutting line and extend in the width direction. a width direction connecting step of forming a plurality of second connecting portions,
A method of manufacturing a sandwich packaging bag, wherein each first connecting portion is formed so as to intersect two adjacent planned cutting lines.

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