JP3370088B1 - Food packaging bags - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To provide a food packaging bag capable of packing food neatly with good work efficiency of food packaging. SOLUTION: When the packaging bag 10 of the sandwich S is opened,
Since the seal portion 14 has an embossed seal structure in which a large number of fine irregularities are point-joined and opened, the opening becomes easy despite the fact that the seal is firm. Also, the sealing portion 14
Is extended to near the middle of both side edges of the front film 11 and the back film 12, so that the bag body 15 is opened when opened.
A large opening can be smoothly made to the middle part of.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food packaging bag, and more particularly to a food packaging bag suitable for packaging foods such as sandwiches and rice balls.

[0002]

2. Description of the Related Art Conventionally, as a packaging bag for sandwiches,
The one shown in FIGS. 6 and 7 is known. FIG. 6 is a perspective view showing a food bag packing operation of food packaging bags according to the conventional means. FIG. 7 is a perspective view showing an opened state of a food packaging bag according to the conventional means. As shown in FIG. 6, a packaging bag 100 for sandwiches is a front film 101 made of a uniaxially stretched polypropylene film that easily tears in a specific direction.
And the back film 102 as main materials, both films 10
Both side edges of 1, 102 are sealed, and both films 101,
A bag main body 105 having an opening 103 at one end side and a tapered other end side, and a seal part 104 closed at the other end, and both front and back films 101, 1
No. 02 of the seal portion 104, and the protruding piece 106, 107 integrally extended outward, and the protruding piece 106 (front film 101 side) protruding longer than the protruding piece 107 (back film 102 side), Two substantially parallel cutting slits 108 serving as starting points for opening when opening toward the bag body 105,
108 has a structure in which a knob 109 is provided.

At the time of bag filling, the opening 103 is opened with a fingertip, and the sandwich S is inserted into the bag body 105 from here. Then, the opening 103 is sealed by heat fusion using an adhesive tape or a sealer. In this way, the sandwich S is packaged. At the time of unsealing, the integrated projecting pieces 106 and 107 are squeezed with one hand, the picking piece 109 is pinched with the fingertip of the other hand, and the front film 101 is torn in a band shape toward the opening 103 side, whereby the bag body 105 Is cleaved and opened (see FIG. 7).

[0004]

However, in the conventional packaging bag 100, both the front and back films 10 before use are used.
Both front and back surfaces of Nos. 1 and 102 were smooth and adhered to each other. As a result, the opening 103 could not be opened smoothly when the sandwich S was packaged. Further, since the shape of the packaging bag 100 is a trapezoidal shape in which the closed other end side is tapered, when the sandwich S is packed into the bag through the opening 103, there is no escape area for the air inside the bag. As a result, the tip of the sandwich S cannot be smoothly inserted into the inside of the bag, and the sandwich S can be packed into the bag.
Had been put in and taken out many times. As a result, the bagging work efficiency was lowered, and the sandwich S could not be packed in a clean bag.

Further, in the conventional packaging bag 100, both ends of the bag seal portion 104 are cut at substantially right angles. Therefore, during handling, the bag may be accidentally torn from the angular end of the seal portion 104. In addition, when opening the bag, the bag may be torn from a portion other than the tab 109, and the packaging bag 100 may not be torn cleanly. And this packaging bag 1
In 00, an expensive uniaxially stretched polypropylene film was used, so that the packaging bag 100 was torn to the left and right around the tab 109 when opened. Therefore, when taking out the sandwich S from the bag, it is necessary to further peel off the remaining portions on both sides of the front film 101 after opening. Further, the conventional seal portion 104 is closed by a general-purpose heat fusion method. As a result, even if there is a sandwich S left uneaten after opening, the packaging bag 10
The 0 could not be resealed.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a food packaging bag which can efficiently pack foods and can cleanly pack the foods. Another object of the present invention is to provide a food packaging bag in which the seal portion is not easily broken during handling and the bag can be opened neatly when opened. Further, it is an object of the present invention to provide a food packaging bag in which the food can be eaten hygienically, the food is easy to eat, and the cost can be reduced. Still another object of the present invention is to provide a food packaging bag in which the food bag can be freely opened and closed as many times as desired, such as when the food is left over. And, as for this invention, as the sealing force of the other end portion of the bag body increases,
It is an object of the present invention to provide a food packaging bag that facilitates the packaging of food. Next, even if the width of both side edges is reduced, both side edges are not easily torn during handling, the bag can be opened cleanly when opened, and both side edges do not hinder bagging when packing food. First, it is an object of the present invention to provide a food packaging bag that can reduce the risk of damaging the side surface of food by the tips of both protruding portions.

Then, even if the sealing force of the other end portion of the bag body is increased and the width of both side edge portions is reduced,
When handling, both side edges are not easily torn, and when opening the bag the binding strength of both films that can open the bag smoothly is obtained,
Moreover, while the food is packed in the bag, both side edges are less likely to hinder bagging, and the tips of both protruding parts are less likely to damage the side surface of the food.On the other hand, when the food is packed in the bag, the other end of the seal part is pinched for picking. It is an object of the present invention to provide a food packaging bag in which food can be easily packaged by using a single piece.

[0008]

According to a first aspect of the present invention, a pair of generally trapezoidal front and back films are overlapped with each other to seal both side edges and the taper tip side of the films. In a food packaging bag comprising a bag main body having an opening formed on the rear end side for widening the food, the seal portions on both side edges are extended to the vicinity of an intermediate portion of both side edges of the both films. At the same time, these seal portions are a food packaging bag having an embossed seal structure in which they are point-bonded through a large number of fine irregularities. The method of opening the packaging bag is not limited. For example, the tape opening type with cutting of the front film or the back film may be used. In this case, the unsealing may be performed by tape cutting in a direction (longitudinal direction) from one end of the front and back films to the other end, or by tape cutting in a direction orthogonal to this (lateral direction or circumferential direction of bag). In addition, a sealing type may be used in which the bag is peeled off from the joint portion between the front and back films by using the sealing portion and the film is cut.

As the front film and the back film, various plastic films (including laminated films) and various papers can be adopted. Among them, as the material of the plastic film, for example, in addition to uniaxially stretched synthetic resin having heat sealing property such as uniaxially stretched polypropylene, inexpensive polypropylene, polyethylene, polyethylene terephthalate, polyvinyl chloride or the like which has no property in the tearing direction is adopted. be able to.
Examples of foods include sandwiches, rice balls, sushi,
You can mention pizza. In addition, confectioneries such as cream puffs, ice cream, cakes and Japanese confectionery can be mentioned. Examples of point bonding include those involving heat fusion or adhesion. Alternatively, a press may be used to overlap the ends of two films and simply emboss the parts. In this press machine, the upper mold and the lower mold are formed with concaves and convexes which are opposite to each other.

According to a second aspect of the present invention, the bag body is
The food packaging bag according to claim 1, wherein the food packaging bag has a pair of projecting pieces integrally extending from the seal portions of the front and back films. The material of the protruding piece may be the same as or different from the material of the corresponding film. For example, a material having higher strength than the corresponding film may be used. Alternatively, even in the case of the same material, only the protruding piece may have high strength by folding back or increasing the thickness of the film. The size or shape of the protruding piece is not limited. For example, one projecting piece may be longer than the other projecting piece so that it can be easily picked by a finger. Alternatively, a pair of parallel cutting slits extending toward the bag body may be formed on one of the projecting pieces, and a tab for opening the bag may be provided on the one projecting piece.

According to a third aspect of the present invention, in the seal portion, both end portions in a direction orthogonal to a direction from one end of the front and back films to the other end are gently cut. Item 4. A food packaging bag according to item 2. This cut has, for example, an arc shape.

According to a fourth aspect of the present invention, in the above-mentioned protruding piece,
The food packaging bag according to claim 2 or 3, wherein an adhesive tape for sealing the seal portion so as to be opened and closed is attached. The type of adhesive tape is not limited. For example, the adhesive may be applied to only one side. Alternatively, the adhesive may be applied to both surfaces.

According to a fifth aspect of the present invention, there is provided the food packaging bag according to the first aspect, wherein the density of the fine irregularities forming the seal portion is large at the other end and smaller at the intermediate portion side.

According to a sixth aspect of the present invention, in the seal portion, the other end portion where the other ends of the front film and the back film are overlapped with each other, and the side edge portion where the side edges of both films are overlapped with each other. The packaging bag for food according to claim 1, further comprising: and a width of the other end portion thereof being larger than a width of the side edge portion.

According to a seventh aspect of the present invention, the density of the fine irregularities forming the seal portion is such that a part of the side edge portion of the front film and the back film in the width direction is the length of the side edge portion. The packaging bag for food according to claim 1, wherein the packaging bag is larger than the seal portion excluding a part thereof over substantially the entire length in the direction. The substantially entire length of the side edge portion in the length direction may be the entire length of the side edge portion in the length direction, or may be slightly shorter than that. Further, the large density portion of the side edge portion may be continuous in a state of being divided into predetermined lengths, for example. The ratio of the density of the remaining seal portion to the density of a part of the side edge portion in the width direction is not limited. For example, it is about 2 to 10 times.

According to an eighth aspect of the present invention, in the seal portion, the other end portion where the other ends of the front film and the back film are overlapped with each other, and the side edge portion where the side edges of these both films are overlapped with each other. The width of the other end portion is larger than the width of the side edge portion, and the density of the fine irregularities forming the seal portion is a part in the width direction of the side edge portion of the front film and the back film. The packaging bag for food according to claim 1, wherein the side edge portion is larger than the seal portion excluding this portion over substantially the entire length in the length direction.

[0017]

According to the present invention, when the seal is opened, the seal portion has an embossed seal structure in which a large number of fine irregularities are point-coupled to each other to close the lid, so that the seal can be easily opened despite the firm seal. . Further, since the seal portion is extended to the vicinity of the middle portion of both side edges of the front and back films, a large opening can be smoothly opened to the middle portion of the bag when the bag is opened. Therefore, after opening, even if the food is not completely removed from the bag, the unopened part (opening side) where the front and back films remain
You can grab the food and eat the food protruding from the opened seal part in a hygienic manner. Moreover, it has a wide open mouth so it is easy to eat. Furthermore, since the bag is opened by utilizing the seal portion having the embossed seal structure, it is not necessary to use an expensive uniaxially stretched synthetic resin film as the film material as in the conventional case. As a result, the manufacturing cost of the packaging bag can be reduced. In addition, since the sealing portion of each of the other end side portions of both films has a stronger bonding force than the side edge portion, it is necessary to peel these films with a predetermined force at first, but once the peeling is started, subsequent opening is not possible. It can be done smoothly. By increasing the bonding strength, accidental peeling can be prevented. The bonding force of the seal portion can be varied depending on the density of the irregularities, the area, and the like. Even when the seal portion has an embossed seal structure, the sealing property of the packaging bag is maintained as in the conventional case.

Further, since both ends of the seal portion are gently cut, the bag is liable to be mishandled during handling, as in the case of a conventional bag in which both ends of the seal portion are cut at substantially right angles. There is little risk of breaking. Further, at the time of opening, the possibility of tearing the bag from other than a preset portion is reduced, and the bag can be opened neatly. For example, when food is left uneaten, the opened seal portion can be closed by the adhesive tape via the protruding piece. This allows the bag to be sealed as many times as possible so that the food is free of dust and dirt. Since the width of the other end portion of the seal portion is made larger than the width of the side edge portion of the seal portion, the sealing force of the other end portion of the bag body is increased. In addition, since the other end portion of the seal portion serves as a tab for picking up when packing food, bagging of food becomes easy.

Furthermore, the density of fine irregularities in a part of the side edge portion in the width direction is made larger than that of the seal portion excluding this part over substantially the entire length in the length direction.
Even if the width of both side edge portions is reduced, both side edge portions are not easily torn during handling, and a good bonding force of both films that can open the bag smoothly when opening is obtained. That is, even if the seal width is increased on the other end side of the bag body, the depth of the bag is shortened by that much, and there is almost no problem in bag packing. However, if the seal width of both side edge portions of the bag body is increased, both side edge portions of the seal portion project into the bag. Therefore, when the food is packed, both side edge portions come into contact with the food, which hinders the packing. Moreover, there is a possibility that the tips of the protruding portions may damage the side surface of the food. here,
The degree of these inconveniences is reduced.

Then, the width of the other end portion of the seal portion is made larger than the width of the side edge portion of the seal portion, and the density of fine irregularities in a part of the side edge portion in the width direction is set substantially in the longitudinal direction. Since it is made larger than the seal part excluding this part over the entire length, the sealing force at the other end of the bag body is increased, and even if the width of both side edge parts is made smaller, the both side edge parts are less likely to break during handling, and the bag is opened. Sometimes a good film bond is obtained that allows the bag to be opened smoothly. In addition, when the food is packed in the bag, both side edge portions are unlikely to hinder the bag packing, and the ends of the protruding portions are unlikely to damage the side surface of the food. Further, since the other end portion of the seal portion serves as a tab for picking up when packing food, bagging of food is facilitated.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Here, a packaging bag for sandwiches is taken as an example. In FIG. 1, reference numeral 10 denotes a food packaging bag (hereinafter referred to as a packaging bag) according to an embodiment of the present invention.
0 heat-seals and seals both side edges of the front film 11 and the back film 12 each having a substantially trapezoidal shape, and the one end side (the long bottom side of the trapezoid) is the opening 13 and the other end side (the trapezoidal shape). A bag main body 15 configured by making the short upper side) a sealing portion 14 and a pair of projecting pieces 16 and 17 integrally extended from the sealing portions 14 of the front and back films 11 and 12, respectively. Have Both front and back films 11,
12 is made of polyethylene. The length of the front film 11 in the vertical direction (the height direction of the trapezoid) is slightly shorter than the length of the back film 12 in the vertical direction. Therefore, a step is formed in the opening 13 to facilitate opening. Both the front and back films 11 and 12 are formed by gently cutting both ends of the seal portion 14 orthogonal to the vertical direction into an arc shape.

The seal portion 14 has an embossed seal structure in which a large number of fine irregularities are point-bonded (specifically, point fusion), and the seal portion 14 is both the front and back films 11, 12.
It is extended to the vicinity of the intermediate length position on both side edges. The protruding piece 16 on the front film 11 side is the back film 12
It protrudes outward as compared with the protruding piece 17 on the side. In this way, the protruding pieces 16 and 17 are provided with a step so that they can be easily gripped. Both projecting pieces 16 and 17 are the front and back films 11 and 12, respectively.
Made of polypropylene, which has higher strength than other materials. Therefore, the protruding pieces 16 and 17 are difficult to cut. Two parallel perforations (air vent slits) 18, 18 extending in the longitudinal direction of the back film 12 are formed on both sides of the back film 12 near the opening 13 (both sides of the base of the trapezoid). ing. At this time, one end of each of the perforations 18, 18 is arranged in the vicinity of the opening 13, and each of the perforations 18, 1 is
The other end of 8 is arranged in the vicinity of the bag-filling virtual line a (see FIG. 1) of the sandwich (food) S, respectively.

Next, a method of using the packaging bag 10 will be described. As shown in FIGS. 1 to 4, when bagging the sandwich S, for example, the vicinity of the opening 13 of the front film 11 is picked with the fingertip of one hand, and the vicinity of the opening 13 of the back film 12 is held with the fingertip of the other hand. After picking, the front and back films 11 and 12 are moved in a direction in which they are separated from each other in this state. In this way, the opening 13 of the packaging bag 10 is opened.
However, each surface of the front and back films 11, 12 is a smooth surface. Therefore, the front and back films 11, which are superposed,
The gap 12 is in a substantially vacuum state, and the films 11 and 12 are in close contact with each other. As a result, the bag 10 does not open well when trying to open the opening 13. In view of this, in one embodiment, two perforations 18, 18 are formed near the opening 13 of the films 11, 12. That is, when the front and back films 11 and 12 are pulled apart to open the opening 103, external air flows into the bag from the perforations 18 and 18 by the action of the negative pressure in the bag. As a result, the vacuum state between the front and back films 11, 12 is instantly released, and the opening 13 can be opened smoothly. Further, when the sandwich S is to be subsequently packed, the sandwich S is inserted into the packaging bag 10 having a tapered triangular shape through the opening 13. At this time, the air in the bag passes through the gap between the front and back films 11, 12 and the sandwich S without staying in the tapered end portion, and the two perforations 18,
It is pulled out from 18. Therefore, sandwich S
Can be smoothly inserted all the way into the bag. As a result, the packing efficiency is improved and the sandwich S can be packed in a clean bag.

Further, in this embodiment, the perforation 1
The formation positions of 8 and 18 are the attachment positions of the adhesive label 20 (see FIG. 4) that seals the opening 13. Thus, after the bag is packed, if the opening 13 is sealed with the adhesive label 20 so as to block the perforations 18, 18 from the outside, even if the perforations 18, 18 are present near the opening 13,
The packaging bag 10 accommodating the sandwich S has a high hermeticity and is hygienic. The adhesive label 20 is a large-sized sticker having a product name, expiration date, etc. printed on the surface. The sticking position of the adhesive label 20 is not limited. For example, it may be the central portion of the surface film, which is a problem in the case of the tape opening bag. Placing it here has no effect on the opening of the bag. In addition, since the perforations 18 and 18 extend in the direction (vertical direction) from one end of the front and back films 11 and 12 toward the other end, even if the opening 13 is opened wide or small, The outside air can be smoothly introduced into the bag through the eyes 18, 18. Moreover, during the bagging of the sandwich S, the effect of venting air from the bag is obtained over a relatively long time in the operation of inserting the sandwich S. Furthermore, since both ends of the seal portion 14 are gently cut, unlike the conventional product in which both ends of the seal portion are cut at substantially right angles, the bag is unlikely to be torn from the end portion of the seal portion during handling. Further, at the time of opening, the possibility of tearing the bag from other than a preset portion is reduced, and the bag can be opened neatly.

Next, in this embodiment, the seal portion 14
Since the embossed seal structure in which a large number of fine irregularities are point-coupled and the lid is closed is adopted as the seal structure, the bag can be easily opened even though high sealing performance is obtained. In addition, the both ends of the seal portion 14 have the front and back films 11, 12
Since it is extended to the vicinity of the middle part of both side edges of the bag, it is possible to open smoothly and largely to the middle part of the bag when opening. As a result, even if the sandwich S is not completely taken out from the bag, the unsealed portions (on the side of the opening 13) of the front and back films 11, 12 are grasped and the opened seal portion 1 is held.
The portion of the sandwich S projecting outward from 4 can be eaten hygienically. Moreover, the large opening makes it easy to eat. In this embodiment, the packaging bag 10 having the seal portion 14 having an embossed seal structure that can be easily opened.
Therefore, it is not necessary to use an expensive uniaxially stretched synthetic resin film as the film material. Therefore, the cost of the bag can be reduced. As shown in FIG. 5, when the sandwich S is left uneaten, the sandwich S
The protruding pieces 16 and 17 may be closed by the adhesive tape 21 so that dust and dirt are not attached, and the seal portion 14 may be opened and closed as many times as necessary. Furthermore, the protruding piece 16,
The 17 may also have an embossed seal structure.

FIG. 8 shows another embodiment of the present invention. In this embodiment, the width x of the other end of the seal portion having the embossed seal structure is about twice as large as that y of the side edge portion. As a result, the bonding force at the other end is higher, and once the peeling is started, it can be easily peeled off. Moreover, when the sandwich S is packed in the bag, the other end portion of the rib portion 14 serves as a pointing protrusion, so that the sandwich S can be easily packed in the bag. Alternatively, the bonding strength may be higher than that at the other end by increasing the density of the fine irregularities with the same width.

FIG. 9 shows another embodiment of the present invention. In this embodiment, the density of fine irregularities in a part of the both side edge portions in the width direction is about twice the density of the fine irregularities of the seal portion 14 excluding these portions over the entire length in the length direction. The seal portion 14 excluding a portion in the width direction of both side edge portions refers to the remaining portion in the width direction of both side edge portions and the other end portion of the seal portion 14. By the way, it is preferable that the width of both side edge portions is as small as possible. this is,
When the width of both side edge portions is large, the both side edge portions of the seal portion 14 project into the inside of the bag body 15 and these sandwiches S
This is because there is a risk that it will hinder the bag filling and that the side surfaces of the sandwich S will be scratched by the tips of both protruding portions.
Therefore, for example, it is conceivable to uniformly increase the density of fine irregularities over the entire side edge portions. By doing this, even if the width of both side edge portions is small, both the front and back film 1 at both side edge portions
A sufficient joining force of 1 and 12 can be obtained. However, if the joining force of both side edge portions is increased by such a method, the width of both side edge portions becomes extremely small. That's the sandwich S
When handling the product, it has an embossed seal structure to prevent it from being accidentally opened from both side edges.
A joining force about the same as that of the conventional heat fusion is required. As a result, the advantage that the seal portion 14 has the embossed seal structure is lost in this embodiment.

Therefore, if the density of only a part of the both side edge portions in the width direction is made higher than the density of the fine irregularities of the other portions of the seal portion 14 over the entire length in the length direction, the inside of the bag is sealed. It is possible to prevent various inconveniences caused by the protruding side edge portions during bag filling. Moreover, it is difficult to tear when handling, and it is easy to secure the joining force of both side edge portions that can open the bag cleanly when opening. Furthermore, since these irregularities are minute, if a diameter of 1 mm is used, for example, any label or the like may be affixed to it, and it is also possible to print on the surface. In any case, by adopting the embossed seal structure, it is not necessary to cut the film and the film can be easily opened.

[0029]

According to the present invention, since both ends of the seal portion are gently cut, the end portion of the seal portion is unintentionally handled at the time of handling like a conventional bag in which both ends of the seal portion are cut at substantially right angles. The bag is less likely to tear. Further, at the time of opening the bag, the possibility of tearing the bag from other than a preset portion is reduced, and the bag can be opened cleanly. Further, since the embossed seal structure is adopted as the seal structure of the seal portion, the seal can be easily opened despite the firm seal. Easy to peel off.
In addition, the embossed structure can add an anti-slip effect. That is, even if the packaging bag is in a sealed state, it can be held without slipping.

Moreover, since the seal portion is extended to the vicinity of the middle portion of both side edges of both the front and back films, the unopened portions of the front and back films can be grasped to remove the food even if the food is not taken out from the bag. You can eat hygienically. Furthermore, since the opening area is large when opened, it is easy to eat.
Then, an inexpensive film can be used instead of an expensive uniaxially stretched synthetic resin film, and the cost can be reduced. Also, since the adhesive tape is provided on the protruding piece,
You can open and close the bag as many times as you want after eating food. Furthermore, since the width of the other end portion of the seal portion is made larger than the width of the side edge portion of the seal portion, the sealing force of the other end portion of the bag body is increased. Moreover, since the other end of the seal portion becomes a tab for picking up when bagging food,
Easy bagging of food. Furthermore, even if the density of fine irregularities in a part of the side edge portion in the width direction is made larger than the seal portion excluding this part over the entire length in the length direction, the width of both side edge portions can be reduced. , Both side edges are not easily torn when handling, and the bag can be opened cleanly when opened. In addition, it is possible to reduce the possibility that both side edge portions will hinder bagging when the food is packed, and the side surfaces of the food will be damaged by the tips of both protruding portions.

Then, the width of the other end portion of the seal portion is made larger than the width of the side edge portion of the seal portion, and the density of fine irregularities in a part of the side edge portion in the width direction is set substantially in the longitudinal direction. Since it is made larger than the seal part excluding this part over the entire length, the sealing force at the other end of the bag body is increased, and even if the width of both side edge parts is made smaller, the both side edge parts are less likely to break during handling, and the bag is opened. In some cases, a good bond strength between the two films that can open the bag smoothly can be obtained. In addition, when the food is packed in the bag, both side edges do not hinder the bagging, and the ends of the protruding portions are unlikely to damage the side surface of the food. Further, since the other end portion of the seal portion serves as a tab for picking up when packing food, bagging of food is facilitated.

[Brief description of drawings]

FIG. 1 is a plan view of a food packaging bag according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an open state of an opening of a food packaging bag according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a food bag packing operation of a food packaging bag according to an embodiment of the present invention.

FIG. 4 is a perspective view showing an opened state of a food packaging bag according to an embodiment of the present invention.

FIG. 5 is a perspective view showing an opened state of a food packaging bag according to another embodiment of the present invention.

FIG. 6 is a perspective view showing a food bag packing operation of a food packaging bag according to a conventional means.

FIG. 7 is a perspective view showing an opened state of a food packaging bag according to a conventional means.

FIG. 8 is a plan view of a food packaging bag according to another embodiment of the present invention.

FIG. 9 is a plan view of a food packaging bag according to another embodiment of the present invention.

[Explanation of symbols]

10 food packaging bags, 11 front film, 12 back film, 13 openings, 14 Seal part, 15 bags, 16,17 protruding piece, 21 adhesive tape, S sandwich.

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Claims (8)

(57) [Claims] 1. A pair of generally trapezoidal front and back films are overlapped with each other to seal both side edges and their tapered front ends, and a wide rear end of both films is provided with an opening for bagging food. In a food packaging bag having a bag body formed with, the seal portions on both side edges are extended to the vicinity of an intermediate portion of both side edges of the both films, and these seal portions have many fine irregularities. A food packaging bag that has an embossed seal structure that is point-bonded via. 2. The packaging bag for food according to claim 1, wherein the bag body has a pair of projecting pieces integrally extending from the seal portions of the front and back films. 3. The food according to claim 1, wherein both ends of the seal portion in a direction orthogonal to a direction from one end of the front and back films to the other end are gently cut. Packaging bag. 4. The packaging bag for food according to claim 2 or 3, wherein an adhesive tape that seals the seal portion so as to be opened and closed is attached to the protruding piece. 5. The food packaging bag according to claim 1, wherein the density of the fine irregularities forming the seal portion is large on the other end and smaller on the intermediate portion side. 6. The seal portion has the other end portion where the other ends of the front film and the back film are overlapped with each other, and the side edge portion where the side edges of these films are overlapped with each other,
The food packaging bag according to claim 1, wherein the width of the other end portion is larger than the width of the side edge portion. 7. The density of the fine irregularities forming the seal portion is such that a part of the side edge portions of the front film and the back film in the width direction extends over substantially the entire length of the side edge portions in the length direction. The packaging bag for food according to claim 1, which is larger than the seal portion excluding a part thereof. 8. The seal portion has the other end portion where the other ends of the front film and the back film are overlapped with each other, and the side edge portion where the side edges of these films are overlapped with each other,
The width of the other end portion is larger than the width of the side edge portion, and the density of the fine irregularities forming the seal portion is a part in the width direction of the side edge portion of the front film and the back film,
The packaging bag for food according to claim 1, wherein the side edge portion is larger than the seal portion excluding this portion over substantially the entire length in the length direction.