JP2020100410A - Packaging bag - Google Patents

Abstract

To provide a packaging bag easy to hold and open even heated.SOLUTION: In a packaging bag of the present invention, a storing part 21 storing a content F and a non-storing part 22 not storing the content F are partitioned to prevent gas flow therebetween, by forming a separation junction part 20 at a predetermined portion of a bag body 1A composed of a sheet 1a. The non-storing part 22 is formed to a holing size and has an opening start point 24, and an opening scheduled line is set starting from the opening start point 24 leading to the storing part 21 across the separation junction part 20.SELECTED DRAWING: Figure 4

Description

The present invention relates to a packaging bag suitable for packaging food that can be heated using a heating means such as a microwave oven.

In order to heat the food contained in the packaging bag, it is a common practice to put the package as it is in a microwave oven and heat it. However, when the package is heated in a microwave oven, the inside of the packaging bag is filled with steam and the temperature of the entire packaging bag becomes high, which makes it difficult to hold and difficult to take out from the microwave oven.

The packaging bag described in Patent Document 1 is intended to solve this problem. A wide heat-welded portion is formed on the upper portion of the packaging bag, and a gripping point is displayed at one of the left and right corners. It is configured with. Since the wide heat-welded portion does not reach a high temperature even when heated, it means that it is not hot and easy to hold if you hold the grip point display portion.

Utility model registration No. 3047708

However, in the packaging bag, since the notch of the opening starting point is formed below the wide heat-sealed portion, in order to open the packaging bag, the temperature of the packaging bag below the notch is high. Must have. Therefore, in the above packaging bag, there is a problem in that it can be easily held after heating, but it is not easy to open it.

Therefore, the present invention has been made in view of such circumstances, and an object thereof is to provide a packaging bag that is easy to hold and easy to open even when heated.

The packaging bag according to the present invention,
By forming the isolation joint portion at a predetermined portion of the bag body formed of the sheet, the storage portion that stores the content and the non-storage portion that does not store the content are partitioned so that gas cannot flow between them. Is
The non-accommodating portion is formed to have a size capable of holding, and has an opening starting point,
It is a packaging bag in which a scheduled opening line is set from the opening starting point to the storage unit across the isolation joint.

Also in this case,
It is possible to adopt a configuration in which the isolation joining portion has a joining strength that does not separate even when the internal pressure in the housing portion increases due to heating by a heating means such as a microwave oven.

Here, as one aspect of the packaging bag according to the present invention,
By forming the isolation joint portion so as to surround one corner portion of the bag body, the non-accommodating portion is formed at the corner portion of the bag body,
The opening line may be set along the direction from the corner of the bag to the adjacent corner.

Further, as another aspect of the packaging bag according to the present invention,
The non-accommodating portion is formed at one end portion of the bag body by forming the isolation joint portion across one end portion of the bag body,
The opening line may be set along the direction from one end to the other end of the bag.

Further, in the above one aspect of the packaging bag according to the present invention,
It is possible to employ a configuration in which the isolation joining portion is formed in a convex curve shape and intersects with the planned opening line at right angles or substantially at right angles.

Further, in the above-mentioned another aspect of the packaging bag according to the present invention,
The non-accommodating portion may have a configuration in which one end of the accommodating portion is faced down and is formed to have a size that serves as a pedestal when the package is placed.

As described above, according to the packaging bag of the present invention, even if the package is heated by the heating means such as a microwave oven, the non-container does not become hot, so that it is easy to hold, and the opening start point is in the non-container. Since the package can be opened while holding the non-container, it is not necessary to have a high temperature part, and the package can be easily opened.

FIG. 1A is a front perspective view of a packaging body packaged by a packaging bag according to the first embodiment of the present invention, and FIG. 1B is a rear perspective view of the packaging body. 2(a) is a front view of the same package, FIG. 2(b) is a cross-sectional view taken along the line AA of FIG. 2(a) in a state in which food is not contained, and FIG. 2) is a cross-sectional view taken along the line AA of FIG. FIG. 3: is explanatory drawing of the manufacturing process of the same package. FIG. 4(a) is a perspective view of a state in which a heated package is held by holding the non-container, and FIG. 4(b) shows the non-container held by one hand and opened by the other hand. It is a perspective view of a mode that a packaging body is opened holding a starting point. 5(a) to 5(f) are partial front views of a packaging body packaged in a packaging bag according to another embodiment. FIG. 6A is a front view of a packaging body packaged by the packaging bag according to the second embodiment of the present invention, and FIG. 6B is a packaging body packaged by the packaging bag according to another embodiment. It is a front view of a body. FIG. 7: is explanatory drawing of the manufacturing process of the same package. FIG. 8A is a front perspective view of the same package placed vertically to be self-supporting, and FIG. 8B is a sectional view taken along line BB of FIG. 8A.

<First Embodiment>
Hereinafter, the packaging bag for the microwave oven according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4.

The packaging bag 1 according to the present embodiment is in the form of a pillow packaging bag manufactured by a pillow packaging machine, and as shown in FIGS. 1 and 2, one sheet 1a has its edge portions joined to each other and attached to the back. It has a tubular shape having a portion 10, and is configured by sealing an opening edge portion 11 on one end side and an opening edge portion 11 on the other end side by a joint portion 12, respectively. One side edge portion (upper edge portion) 13 is not the joining portion but the folded portion 14 of the sheet 1a. The other side edge portion (lower edge portion) 15 is not the joint portion but the folded portion 16 of the sheet 1a, but a gusset (bottom gusset) 16a is provided. However, the gusset 16a may be omitted. Alternatively, the folded portion 14 of the upper edge portion 13 may also be provided with a gusset. As a result, the packaging bag 1 has a tubular shape in which the edge portions are joined to each other and has the back attaching portion 10, and the outer edge portions 11, 11, 13, 15 are sealed by the joining portion 12 or the folded portions 14, 16. It is composed of a bag 1A composed of one sheet.

The sheet 1a is made of a plastic sheet having heat-welding properties such as polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET), and has a rectangular shape with a size capable of enclosing the food F as the content in a tubular state. To a substantially rectangular shape (rectangular shape or substantially rectangular shape). In the present embodiment, the back attachment part 10 is formed by heat-sealing the edge parts of one sheet 1a, and the joint part 12 is formed by heat-sealing the cylindrical opening edge part 11. To be done.

An isolation joint 20 is formed at one corner of both upper corners of the bag 1A so as to surround the corner. In the present embodiment, the isolation joining portion 20 is formed by heat sealing the front side sheet 1a and the back side sheet 1a. The isolation joint portion 20 connects the opening edge portion 11 and the upper edge portion 13 and is formed in a convex curve shape that is convex toward the housing portion 21 side. The isolation joining portion 20 divides the bag body 1A into a storage portion 21 that stores the food F and a non-storage portion 22 that does not store the food F.

As a result, the non-accommodating portion 22 is formed at one corner on the upper side of the bag body 1A and has a size capable of being held by a human hand (finger). Further, a cut line 23 is formed on the front side (or the back side) of the sheet 1a in the non-accommodating portion 22. The cut line 23 is formed into a U-shape, a semi-circle, a V-shape, an X-shape, a cross shape, a-shape, etc. by a full cut line, a half cut line (half cut), a perforation, etc., and is opened by the formation of the cut line 23. The pick portion 24 as a starting point is formed.

Then, a strip-shaped or linear strip 25 for opening is provided on the inner surface of the sheet 1a starting from the picking portion 24. The strip 25 for unsealing is provided along the direction from one corner on the upper side of the bag 1A to the other corner, and is provided along the upper edge 13 of the bag 1A. That is, the strip 25 for opening is provided along the flow direction (stretching direction) of the sheet 1a. The strip 25 for opening is, for example, a cut tape or a thread attached to the inner surface of the sheet 1a. As a result, a line to open the bag is set in the bag body 1A from the grip portion 24 to the storage joint portion 21 across the isolation joint portion 20, and by pulling the grip portion 24 toward the other corner of the bag body 1A. The opening strip 25 can cut the sheet 1a with a predetermined width to open the bag 1A.

The packaging bag 1 having the above configuration is manufactured by pillow packaging as described above. As shown in FIG. 3, the manufacturing process includes the steps of i) a step of supplying/conveying a long sheet material 1a having an opening strip 25 adhered to the inner surface along the longitudinal direction (flow direction), ii) unit A step of forming the score lines 23 with a pitch, iii) a step of supplying the food F to the inner surface side of the sheet raw fabric 1a at a unit pitch, iv) an overlapping of the edge portions of the sheet raw fabric 1a so as to wrap the food F To form a spine-bonded portion 10 by heat-sealing the edges together, v) a step of heat-sealing the original sheet 1a in the width direction at a unit pitch to form the joint portion 12, vi) The process includes the steps of heat-sealing relevant parts at a unit pitch to form the isolation joint portion 20, and vii) separating the packaging bag (food packaging body) 1. It should be noted that FIG. 3B is a view of the downstream side of the carrying step in FIG. 3A viewed from the opposite surface side.

The package 1 manufactured in this manner is heated in a microwave oven, for example, when the food F is desired to be heated and eaten. Alternatively, other heating means such as boiling water may be used. When placed in a microwave oven, the water content of the food F becomes steam, and not only the food F but also the entire housing portion 21 filled with steam becomes hot. Therefore, even if the user tries to take out the package 1 from the microwave oven while holding the housing portion 21, it is hot and difficult to hold, and it is difficult to take it out from the microwave oven. However, since the package 1 according to the present embodiment includes the non-accommodating portion (holding portion) 22 that does not become hot because steam is not generated, as shown in FIG. Easy to take out from the microwave.

When opening, as shown in FIG. 4B, the non-container portion (holding portion) 22 is held by one hand and the pick portion (opening start point) 24 is held by the other hand to open the strip for opening. Since the package 1 can be opened by pulling 25, it is not necessary to have a hot portion of the package 1 even when the package 1 is opened, and the package can be easily opened.

As described above, the packaging bag 1 according to the present embodiment can be easily held and opened even when heated.

In addition, the seal strength of the isolation joint portion 20 is weak, or the part-coating agent is applied to a portion between the sheets 1a on which the isolation joint portion 20 is formed. The isolation joining portion 20 is peeled off due to an increase in the internal pressure in the housing portion 21 due to heating by a microwave oven or the like, and if this happens, the vapor also enters the non-holding portion 22 and the non-holding portion 22 also becomes hot. However, since the joining strength of the peeling joining portion 20 is sufficient and the peeling joining portion 20 does not peel off, such a problem does not occur.

Further, the peeling joint portion 20 is formed in a convex curve shape, but intersects with the opening strip 25 so as to be orthogonal or substantially orthogonal. Accordingly, when the opening crosses the peeling joint, the opening line is dragged by the inclination of the peeling joint and deviates obliquely, and there is no problem that the opening cannot be properly performed. From this point of view, the angle of intersection between the strip 25 for opening and the planned opening line and the peeling joint portion 20 is 45 degrees or more, preferably 70 degrees or more, and more preferably 80 degrees or more.

In addition, the peel-off joint portion 20 is not a straight line, but is formed in a curve in which the intermediate portion extends beyond the line connecting one end and the other end. As a result, the non-accommodating portion 22 does not bend or bend at the peeling joint portion 20 and does not tilt, and the upright posture is always maintained and the holding property is excellent. In order to improve the uprightness of the non-accommodating portion 22, the peeling joint portion 20 uses an uneven sealer at the time of heat sealing, and the cross-sectional shape (cross-sectional shape crossing the peeling joint portion 20) is uneven (sinusoidal, Rectangular wave shape, triangular wave shape, etc.).

Further, the peeling joint portion 20 is formed in a convex curve shape that is convex toward the accommodation portion 21 side. As a result, there is an effect as a food position restricting unit that suppresses the food F from unnecessarily moving in the accommodation unit 21. However, in order to prevent the width of the opening opening from being narrowed by the peeling joint portion 20 and the dischargeability of the food F from being impeded, the opening line of the accommodation portion 21 has a size that allows the food F to pass through. It is preferable to set so that

Further, the cut line (opening notch) 23 serving as a starting point for opening is provided in the non-accommodating portion 22 separated from the accommodating portion 21. Accordingly, there is no problem that foreign matter or the like enters the accommodation portion 21 through the cut line 23.

The packaging bag 1 according to the present embodiment can adopt various forms. For example, as shown in FIGS. 5( a) and 5 (b ), the shape of the isolation junction 20 is a convex curve having a discontinuous portion at the intersection formed by a plurality of straight lines or curves (two straight lines in the figure). May be Further, as shown in FIG. 7C, it may be composed of one straight line.

Further, the opening starting point may be a linear opening notch 26 cut inward from the end edge of the bag 1A as shown in FIG. 3D, or as shown in FIG. As described above, the opening notch 27 having a V shape or a U shape cut into the edge of the bag 1A may be used.

Further, the opening strip 25 is not essential, and if the sheet 1a can be cut along the planned opening line by utilizing the directionality of the sheet, as shown in FIG. The strip 25 may not be provided.

<Second Embodiment>
Hereinafter, the packaging bag for the microwave oven according to the second embodiment of the present invention will be described with reference to FIGS. 6 to 8.

The packaging bag 1 according to this embodiment also has basically the same configuration as the packaging bag 1 according to the first embodiment. Therefore, the same or common configurations are given the same reference numerals. The different points are the formation mode of the isolation joint portion 20 and the shape of the bag body 1A associated therewith.

The isolation joint portion 20 is formed at one end of the bag body 1A so as to traverse the bag body 1A in parallel or substantially parallel to the joint portion 12. As a result, the non-accommodating portion 22 is formed at the same width as the accommodating portion 21 at one end of the bag 1A.

The score line 23 and the grip portion 24 are formed in the widthwise central portion of the bag body 1A. However, it may be formed at a position closer to one side edge portion 13 or at a position closer to the other side edge portion 15. Although the strip 25 for opening is not provided, it may be provided.

As shown in FIG. 6B, among the edges of the isolation joint portion 20, the edge on the side of the opening start point 24 may have an uneven shape (sine wave shape, rectangular wave shape, triangular wave shape, etc.) instead of a straight line. With this configuration, the resistance when the unsealing line is guided to the trough and passes through the isolation junction 20 can be reduced. This can of course be adopted in the packaging bag 1 according to the first embodiment.

The packaging bag 1 according to this embodiment is also manufactured by pillow packaging. As shown in FIG. 7, in the manufacturing process, i) a process of supplying/conveying a long sheet material 1a along the longitudinal direction (flow direction), ii) a process of forming cut lines 23 at a unit pitch, iii. ) A step of supplying the food product F to the inner surface side of the sheet material 1a at a unit pitch, iv) The edge parts of the sheet material 1a are superposed so as to wrap the food material F into a tubular shape, and the edge parts are heat-sealed. To form the back-adhered portion 10, and v) to heat-seal the corresponding portion at a unit pitch to form the isolation joint portion 20, and vi) to heat-seal and join the sheet material 1a at a unit pitch in the width direction. The step of forming the part 12, vii) the step of separating the packaging bag (food packaging body) 1. Note that FIG. 7B is a view of the downstream side of the carrying step of FIG. 7A viewed from the opposite surface side.

The packaging bag 1 according to this embodiment also exhibits the above-described effects of the packaging bag 1 according to the first embodiment. Further, in addition to this, according to the packaging bag 1 according to the present embodiment, as shown in FIG. 8, the non-accommodating portion 22 is configured such that when the packaging body 1 is placed with one end side of the accommodating portion 21 facing down. Most of the bottom portion of the accommodation portion 21 on the one end side serves as a pedestal portion on which the portion is placed. This has the effect of stabilizing the independence of the package 1. It should be noted that the non-accommodating portion 22 is formed in such a size that 50% or more, preferably 70% or more, and more preferably 80% or more of the bottom portion on the one end side of the accommodation portion 21 is placed. Good. Further, at this time, the picking portion 24 may be raised from the non-accommodating portion 22 and projected to the side opposite to the side on which the non-accommodating portion 22 is tilted.

As described above, the packaging bag according to the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

For example, the above-mentioned respective elemental technologies such as the form of the starting point of opening, whether or not the strip for opening is provided, whether or not the directionality of the sheet (film) is used, and the like are mutually applicable between the respective embodiments. ..

In addition, in the above-described embodiment, the score line 23 and the grip portion 24 are provided on one of the front and back sheets of the bag 1A. However, the opening starting point may be provided on both sheets. The strip for opening may be provided on both sheets.

In addition, in the above-described embodiment, the non-accommodating portion 22 is provided at one location of the bag body 1A. However, you may make it provide the non-accommodation part 22 in multiple places. For example, as another embodiment of the first embodiment, the non-accommodating portions 22 are provided at both upper corners of the bag 1A, and an opening start point is provided in each non-accommodating portion 22, so that the unsealing can be performed from either side. You may be able to. As another embodiment of the second embodiment, the non-accommodating portion 22 is also provided at the other end of the bag 1A, and the non-accommodating portion 22 is also provided with an unsealing start point. It may be opened from either side.

Further, in the above embodiment, the packaging bag 1 was a pillow packaging bag. However, the packaging bag according to the present invention is not limited to the pillow packaging bag. The bag may be a flat bag such as a three-sided bag or a pouch, or a gusset bag, and the mouth may be sealed after the contents are contained in the bag-made bag.

Further, in the above-described embodiment, the sheet 1a forming the packaging bag 1 is made of a single plastic sheet. However, the material of the sheet is not limited to the plastic sheet, and may be a sheet of other material such as paper or paper sheet. Further, the sheet is, for example, one in which two sheets are joined together at their end portions into one sheet, or one sheet in which three sheets are successively joined together at their end portions. Alternatively, a plurality of sheets may be used to form one sheet. Further, in this case, the material of each sheet may be different. For example, some sheets may be paper or paper-based sheets instead of plastic sheets.

DESCRIPTION OF SYMBOLS 1... Packing bag (packing body), 1A... Bag body, 1a... Sheet, 10... Back attachment part, 11... Opening edge part, 12... Joining part, 13... One side edge part (upper edge part), 14... Folded portion, 15... Other side edge portion (lower edge portion), 16... Folded portion, 16a... Gazette (bottom gusset), 20... Separation joint portion, 21... Storage portion, 22... Non-storage portion, 23... Cut Lines, 24... picking portion (opening starting point), 25... strip for opening, 26, 27... notch, F... food

Claims (6)

By forming the isolation joint portion at a predetermined portion of the bag body formed of the sheet, the storage portion that stores the content and the non-storage portion that does not store the content are partitioned so that gas cannot flow between them. Is
The non-accommodating portion is formed to have a size capable of holding, and has an opening starting point,
A packaging bag in which a scheduled opening line is set from the opening starting point to the isolation joint section and to the accommodation section. The packaging bag according to claim 1, wherein the isolation joining portion has a joining strength that does not separate even when an internal pressure in the housing portion increases due to heating by a heating unit such as a microwave oven. By forming the isolation joint so as to surround one corner of the bag, the non-accommodating portion is formed at the corner of the bag,
The packaging bag according to claim 1, wherein the planned opening line is set along a direction from the corner of the bag to an adjacent corner. By forming the isolation joint so as to cross at one end of the bag, the non-accommodating portion is formed at the one end of the bag,
The packaging bag according to claim 1, wherein the planned opening line is set along a direction from the one end to the other end of the bag body. The packaging bag according to claim 3, wherein the isolation joint portion is formed in a convex curve shape and intersects with the planned opening line so as to be orthogonal or substantially orthogonal. The packaging bag according to claim 4, wherein the non-accommodating portion is formed to have a size that serves as a pedestal when the packaging body is placed with the one end side of the accommodating portion facing down.

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