JP2023163722A - Packing bag - Google Patents

Abstract

To provide a packaging bag which can be easily unsealed, and a method for manufacturing the same.SOLUTION: A packaging bag 10 includes an easy-to-open portion 31 provided on a front surface 21 of the bag, a gripping portion 41 provided on the front side of the front surface 21 of the bag along the easy-to-open portion 31, and fixing portions 51 provided at both ends of the easy-to-open portion 31. A method for manufacturing a packaging bag 10 including the steps of: processing an easy-to-open portion 31 in the width direction of a sheet, processing the sheet so as to be folded into a mountain fold along the easy-to-open portion 31 to form a gripping portion 41, and processing fixing portions 51 by side sealing both ends of the sheet in the width direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to packaging bags. The present invention also relates to a method of manufacturing a packaging bag.

Packaging bags are used for a variety of purposes, including foods such as sweets and various daily necessities. Packaging bags are available in shapes tailored to their uses and contents. However, when a large opening is required, the part to be opened becomes large, making it difficult to open.

When opening a bag, it can be opened by pulling it hard, tearing it, or cutting it with scissors, so depending on the purpose, there may be no special measures taken to open the bag. On the other hand, there are many ways to make the bag easier to open, such as creating a notch, inserting cut tape or thread, making scratches, making minute holes or scratches, and using uniaxially stretched film. In some cases, laser processing is also performed. These packaging bags that have been processed for opening are also widely used.

For example, Patent Document 1 discloses a bag whose inner surface is made of a heat-adhesive resin layer, and a tear-opening tape is adhered to the heat-adhesive resin layer surface over the entire length between the edge heat-adhesive portions of the bag. An easy-to-open bag is disclosed in which an opening section consisting of a notch and a non-thermal bonding section is formed on at least one edge of the bag.

Patent Document 2 discloses an easy-to-open packaging bag in which a film A and a film B are overlapped and heat-sealed at the periphery, and the film A is heat-sealed to a film having linear cutability in at least one direction. The film B is a laminated film including a heat-sealable resin film layer, and the film B is a laminated film including a film that does not have unidirectional straight cutability and a heat-fusible resin layer, and in the heat-sealed part of the peripheral part. , discloses an easy-to-open packaging bag characterized in that a notched tab that penetrates the heat-sealed part is provided in a direction that makes it easy to tear along the unidirectional linear cutting direction of the film A.

Japanese Patent Application Publication No. 9-30537 JP2004-292011A

Conventional easy-open processing makes the bags easier to open than unprocessed bags. However, there are cases where the processed part for easy opening is small and difficult to hold, the contents may spill due to opening too forcefully, the package may open in an unintended direction, or it may be difficult to know how to open the package. Additionally, if you are not used to using the product, you may not notice that it has been processed to make it easy to open.

In addition, opening requires multiple steps: tearing or tearing to create an opening, and then opening the opening. Moreover, since packaging bags are used for various purposes, more packaging shapes are required so that it is easy to select the appropriate means. Under such circumstances, an object of the present invention is to provide a packaging bag that can be easily opened.

As a result of extensive research in order to solve the above problems, the present inventors found that the following invention met the above objects, leading to the present invention. That is, the present invention relates to the following inventions.

<1> An easy-to-open part provided on the front of the bag, a grip part provided on the front side of the front of the bag along the easy-to-open part, and a fixing part provided at both ends of the easy-to-open part. , a packaging bag with.
<2> The packaging bag described above, wherein the grip portion has any shape selected from the group consisting of a square, a semicircle, a trapezoid, and a triangle.
<3> The above-mentioned packaging bag, in which the gripping portion has any processing portion selected from the group consisting of hole processing and uneven processing.
<4> The packaging bag described above has a resealing section that reseals the front and back surfaces of the bag along the easy-opening section.
<5> A step of forming an easy-to-open portion in the width direction of the sheet, a step of folding the sheet into a mountain fold along the easy-to-open portion to form a gripping portion, and adjusting the width of the sheet. A method for manufacturing a packaging bag, comprising the steps of side-sealing both ends of the direction and processing a fixing part.

According to the present invention, a packaging bag that can be easily opened is provided.

FIG. 1 is a schematic diagram of an embodiment of a packaging bag of the present invention. FIG. 1 is a schematic diagram of an embodiment of a packaging bag of the present invention. FIG. 1 is a schematic diagram of an embodiment of a packaging bag of the present invention. FIG. 1 is a schematic diagram of an embodiment of a packaging bag of the present invention. FIG. 2 is a schematic diagram regarding the manufacturing process of the packaging bag of the present invention. It is a schematic diagram of the modification of the grip part of the packaging bag of this invention. It is a schematic diagram of the modification of the grip part of the packaging bag of this invention.

The embodiments of the present invention will be described in detail below, but the explanation of the constituent elements described below is an example (representative example) of the embodiments of the present invention, and the present invention will be described below unless the gist thereof is changed. is not limited to the content. Note that when the expression "~" is used in this specification, it is used as an expression including the numerical values before and after it.

[Packaging bag of the present invention]
The packaging bag of the present invention has an easy-to-open part provided on the front of the bag, a grip part provided on the front side of the front of the bag along the easy-to-open part, and a fixing part provided at both ends of the easy-to-open part. and has. The packaging bag of the present invention is a packaging bag that can be easily opened.

[Method for manufacturing the packaging bag of the present invention]
The method for manufacturing a packaging bag of the present invention includes the steps of forming an easy-to-open portion in the width direction of the sheet, and folding the sheet into a mountain fold along the easy-to-open portion to form a gripping portion. and a step of side-sealing both ends of the sheet in the width direction to form a fixing part. Hereinafter, the packaging bag manufacturing method of the present invention may be simply referred to as the manufacturing method of the present invention. The packaging bag manufactured by the manufacturing method of the present invention can be easily opened, and the manufacturing method of the present invention can efficiently manufacture the packaging bag of the present invention.

In addition, in this application, the packaging bag of this invention can also be obtained by the manufacturing method of this invention, and the structure corresponding to each can be mutually utilized in this application.

[Packaging bag 10]
FIG. 1 is a schematic diagram of an embodiment of the packaging bag of the present invention. FIG. 1(a) is a schematic diagram of the packaging bag 10 viewed from the front. FIG. 1(b) is a schematic cross-sectional view of the packaging bag 10 near the center. The packaging bag 10 has an easy-to-open part 31 on the front face 21, a grip part 41, and a fixing part 51. Further, it has a fixing part 52 at the top and a fixing part 53 at the bottom, and the fixing parts 51, 52, and 53 close the front 21 and the back 22, so that the package can be sealed and packaged during storage. In this application, the surface on which the easy-to-open part 31 and the grip part 41 are provided is called the front surface 21, and the surface opposite to the front surface 21 forming the packaging bag 10 is called the back surface 22.

[Easy opening part 31]
The easy-to-open part 31 is a part provided on the front face 21 of the bag. The easy-to-open part 31 is a part where the sheet of the bag is processed to make it easy to open. The easy-to-open portion 31 can be made easy to open by, for example, being processed with incisions, perforations, micro-holes, laser processing, or the like. The easy-to-open part 31 of the packaging bag 10 may be provided only on the front side 21 along the gripping part 41, and may not be provided on the back side 22. Alternatively, another easy-to-open portion may be provided at a position different from the easy-to-open portion 31 in order to change the unsealing position according to the state of use.

[Gripping part 41]
The grip portion 41 is provided on the front surface 21 of the bag along the easy-open portion 31. Further, the grip portion 41 is provided on the front side when the packaging bag 10 is viewed from the front side 21 side. When opening the packaging bag 10, the user can easily open the easy-opening section 31 by grasping the gripping section 41 and pulling it toward the user when viewed from the front.

[Fixed part 51]
The fixing parts 51 are provided at both ends of the easy-to-open part 31. The fixing portion 51 can be a portion provided with a so-called side seal. When the easy-to-open part 31 is opened, the opening is stopped by the fixing parts 51 at both ends thereof.

[Fixed parts 52, 53]
The fixing parts 52 and 53 are parts fixed to form a bag part that fixes and seals the periphery of the front face 21 and the back face 22. The fixing part 52 is a so-called top seal that fixes the upper part, and the fixing part 53 is a bottom seal that fixes the lower part.

[Contents 9]
Any contents 9 can be stored inside the packaging bag 10. The contents 9 can be foods, daily necessities, and the like. Foods can include, for example, grains, beans, vegetables, fruits, milk, meat, marine products, processed products thereof, confectionery, luxury goods, seasonings, processed seasoning products, and the like. Moreover, the daily necessities can include, for example, sanitary products, household products, detergents, toiletry products, oral care products, cosmetics-related products, chemical products, miscellaneous goods, and the like. The packaging bag 10 is particularly suitable for solid items because the contents 9 are taken out through the opening where the easy-opening part 31 is opened.

The packaging bag 10 can be formed using various materials used for packaging. For example, plastic packaging materials, paper, metal foil, and composite materials combining these materials can be used. Moreover, although the packaging bag 10 is formed as a flat bag in this example, it may have other shapes, such as a gusset bag, a pillow bag, a square bottom bag, a stand bag, etc.

FIG. 2 is a schematic diagram of an embodiment of the packaging bag of the present invention. FIG. 2(a) shows the sealed state, and FIG. 2(b) shows the opened state during use. When using the packaging bag 10, the user pulls the grip portion 41 attached to the front surface 21 toward the side of the front surface 21, which is a direction away from the rear surface 22, as shown in FIG. 2(a). As a result, the easy-to-open portion 31 is torn, and the front upper portion 211 and the front lower portion 212 are separated from each other above and below the easy-to-open portion 31, and the opening portion 8 is easily opened. Thereby, the contents 9 can be taken out from the opening 8 of the pocket-shaped bag whose bottom is sealed by the fixing part 53.

FIG. 3 is a schematic diagram of an embodiment of the packaging bag of the present invention. In the packaging bag of the present invention, first, as shown in (1), the grip portion is gripped with fingers. Next, pull the grip part as shown in (2). This makes it possible to take it out from the opening as shown in (3). In this way, just by grasping and pulling the grip part, the easy-open part is torn and the opening is opened. In other words, it can be broken and opened in one action. In general packaging, when the easy-open part is torn, the opening is not yet open, so it is necessary to open the torn part afterwards, but in the present invention, this work is not separated, Can be opened more easily and with less effort.

FIG. 4 is a schematic diagram of an embodiment of the packaging bag of the present invention. The packaging bag 11 is a modification of the packaging bag 10 shown in FIG. 1 and the like. The packaging bag 11 has a configuration similar to the packaging bag 10, and further includes resealing parts 61 and 62. FIG. 4(a) is a schematic diagram of the packaging bag 11 viewed from the front. FIG. 4(b) is a schematic cross-sectional diagram of the packaging bag 11 viewed from the side. FIG. 4(c) is a schematic diagram showing a state in which the easy-open portion 31 is opened and the contents 9 are taken out. FIG. 4(d) shows the resealing section 60 in which the resealing processing sections 61 and 62 are closed, and the resealing section 60 is resealed.

[Resealing processing parts 61, 62]
The resealing parts 61 and 62 are parts for resealing the packaging bag 11. The resealing part 61 is provided along the easy-opening part 31. Further, the resealing section 62 is provided at a position on the back surface 22 side corresponding to the resealing section 61. The resealing parts 61 and 62 can be made of zipper tape or the like. In addition, the easy-opening part 31 can be provided in a straight line so that these resealing parts 61 and 62 can be easily attached and correspond to these positions.

[Example of manufacturing process of packaging bag of the present invention]
FIG. 5 is a schematic diagram regarding the manufacturing process of the packaging bag of the present invention. As shown in FIG. 5(a), first, a front sheet 210 and a back sheet 220 are used to form a flat bag. FIGS. 5(a) to 5(d) are views seen from a direction corresponding to the side surface when used as a packaging bag. The front sheet 210 and the back sheet 220 can be manufactured continuously while being conveyed up and down.

First, as shown in FIG. 5(b), processing is performed in the width direction of the front sheet 210 to form the easy-open processing portion 3. Next, as shown in FIGS. 5(c) and 5(d), the front sheet 210 is folded into a mountain folded portion 410 along the easy-open processed portion 3 to form a gripping portion 41. .

Then, as shown in FIG. 5E, the front sheet 210 and the back sheet 220 are side-sealed at both ends in the width direction to provide a fixing portion 51. Moreover, by sealing the fixing part 52 that serves as a top seal and the fixing part 53 that serves as a bottom seal, an easily openable part 31 etc. can be provided and the periphery can be closed.

When storing the contents in the bag, various packaging means for packaging bags can be used. For example, by making only the fixing part 51 of the side seal into a cylinder and accommodating the contents, sealing it across the width direction and cutting it in the center, fixing parts 52 and 53 can be formed. It may be provided. Alternatively, only the fixing part 53 serving as the bottom seal is prepared in advance, and the contents are put into the inside of the pocket from the top as a three-sided seal bag, and then the top seal is performed, the fixing part 52 is provided, and the bag is sealed. You can also use it as

FIG. 6 is a schematic diagram of a modified example of the grip part of the present invention. Here, the shape of the gripping part is variously changed. The gripping portion in FIG. 6(a) is square. The gripping portion in FIG. 6(b) is a semicircle. The gripping portion in FIG. 6(c) is trapezoidal. The gripping portion in FIG. 6(d) is triangular. The gripping portions may have a shape such as a square, a semicircle, a trapezoid, or a triangle. When the shape of the gripping part is semicircular, trapezoidal, triangular, etc., the gripping part at the center becomes larger, so that the user can be guided to grip the vicinity of the center. Thereby, since the bag is opened by pulling it from near the center, it can be opened easily and efficiently without being biased in the width direction.

FIG. 7 is a schematic diagram of a modified example of the grip portion of the present invention. Here, the gripping portion has been modified in various ways. The gripping portion shown in FIG. 7(a) has punched holes. The gripping portion shown in FIG. 7(b) is textured. The gripping portion may have a processed portion such as hole processing or uneven processing. The hole can be a punched hole or the like, and the presence of such a hole makes it easier to put a finger or the like on the hole and pull it, making it easier to apply force to open the package. Additionally, the textured surface prevents slipping, making it easier to grip and transfer force.

Since the packaging bag of the present invention can be opened easily, it is suitable even for children who are not accustomed to opening bags. In addition, even after opening, the three-sided seal formed by the side seal and bottom seal is maintained, so it becomes pocket-like and can contain the contents. In addition, since the package can be opened without separating any parts before and after opening, it can be handled as an integrated package, and there is no need to dispose of only the details separately, making it easy to handle.

The packaging bag of the present invention can be used for packaging various things and is industrially useful.

10 packaging bag 21 front 210 front sheet 211 upper front 212 lower front 22 back 220 back sheet 3 easy-open processing section 31 easy-open section 41 grip section 410 mountain fold section 51, 52, 53 fixing section 60 reseal section 61, 62 Resealing processing section 9 Contents

Claims (5)

An easy-to-open part provided on the front of the bag,
a gripping part provided on the front side of the bag along the easy-opening part;
A packaging bag comprising: fixing parts provided at both ends of the easy-to-open part. The packaging bag according to claim 1, wherein the grip portion has any shape selected from the group consisting of a square, a semicircle, a trapezoid, and a triangle. The packaging bag according to claim 1, wherein the gripping portion has any one of processing parts selected from the group consisting of hole processing and uneven processing. The packaging bag according to claim 1, further comprising a resealing part for resealing the front and back sides of the bag along the easy-opening part. A process of processing an easy-to-open part in the width direction of the sheet,
a step of folding the sheet into a mountain fold along the easy-to-open portion to form a gripping portion;
A method for manufacturing a packaging bag, comprising the steps of side-sealing both ends of the sheet in the width direction to form a fixing part.