Express bag and manufacturing method thereof

Abstract

The invention discloses an express bag and a manufacturing method thereof.The express bag comprises a bag body, the bag body comprises an inflatable inner bag and an outer bag arranged outside the inner bag, a bag opening of the inner bag is located outside a bag opening of the outer bag, the inner bag is provided with a first bag cap, the first bag cap and / or a bag body of the inner bag are / is provided with a first adhesive tape, and the first adhesive tape is provided with a second adhesive tape. The bag opening is used for sealing the bag opening of the inner bag; the outer bag is provided with a second bag cap, and the second bag cap and / or a bag body of the outer bag are / is provided with a second adhesive tape used for sealing a bag opening of the outer bag. Both the inner bag and the outer bag can be sealed, articles can be prevented from falling off from the gap between the inner bag and the outer bag, other people can be effectively prevented from seeing the articles in the bag from the gap, and privacy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging, and in particular to an express bag and a manufacturing method thereof. Background Art

[0002] With the development of technology, online shopping is becoming more and more popular due to its convenience and speed. One of the most important links in online shopping is the delivery of goods. This work is generally done by express delivery. In order to avoid damage to the goods during transportation, the goods need to be packaged. Among them, express bags are often used as packaging for products to be transported. At present, the express bags of the existing technology have only a single-layer structure and cannot cushion the packaged items. Although some have a double-layer structure and have a certain cushioning effect, they also have the following shortcomings: the inner bag is not sealed, and the items are easy to fall from the gap between the inner bag and the outer bag, and others can easily see the items in the bag from the gap. Summary of the invention

[0003] In view of the technical problems existing in the prior art, the present invention provides a courier bag and a manufacturing method thereof, which can prevent the packaged items from falling and increase privacy.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a courier bag, including a bag body, the bag body including an inflatable inner bag and an outer bag arranged outside the inner bag, the bag opening of the inner bag is located outside the bag opening of the outer bag, the inner bag is provided with a first bag cap, the first bag cap and / or the bag body of the inner bag are provided with a first adhesive strip for closing the bag opening of the inner bag; the outer bag is provided with a second bag cap, the second bag cap and / or the bag body of the outer bag are provided with a second adhesive strip for closing the bag opening of the outer bag.

[0005] Furthermore, the inner bag forms an air storage chamber, and the first bag cap is provided with an air intake structure, and the air intake structure is connected to the air storage chamber; the first adhesive strip is arranged on the outer surface of the bag body of the inner bag and extends along the extension direction of the bag opening of the inner bag, and the first adhesive strip is used to bond with the first bag cap.

[0006] Furthermore, the air intake structure includes an air intake channel extending along the extension direction of the bag opening of the inner bag; the air storage chambers are provided in a plurality, and the plurality of air storage chambers are distributed along the extension direction of the bag opening of the inner bag, and adjacent air storage chambers are separated from each other, and each air storage chamber is provided with a connecting opening to the air intake channel.

[0007] Furthermore, two opposite sides of the bag body of the inner bag in the extending direction of the bag opening of the inner bag are respectively connected to two opposite sides of the bag body of the outer bag in the extending direction of the bag opening of the outer bag by heat sealing, so that the outer bag and the inner bag respectively have two bag surfaces arranged opposite to each other; the air storage chambers are respectively provided on the two bag surfaces of the inner bag, and the air storage chamber on one bag surface of the inner bag is integrally connected with the air storage chamber on the other bag surface at the bag bottom of the inner bag, the first bag cap of the inner bag is provided on one bag surface, and the first adhesive strip is provided on the other bag surface.

[0008] Furthermore, the inner bag is made of a double-layer film, the air storage chamber is formed by heat sealing between the double-layer films, and the outer bag is made of a colored film.

[0009] Furthermore, the second adhesive strip is arranged on the second bag cap of the outer bag and extends along the extension direction of the bag opening of the outer bag, and the second adhesive strip is used to adhere to the bag body of the outer bag; the first adhesive strip and the second adhesive strip are respectively covered with release films;

[0010] The second bag cap and the first bag cap are located on the same side; the second bag cap protrudes from the first bag cap in the bag depth direction of the outer bag.

[0011] Furthermore, the bag bodies are provided in plurality, the plurality of bag bodies are integrally formed and distributed along the extension direction of the bag opening of the inner bag, and the bag openings of the plurality of bag bodies face the same side; and a tear line is provided between adjacent bag bodies, and the tear line extends along the bag depth direction of the bag body.

[0012] Furthermore, the inner bag forms an air storage chamber, and the first bag cap is provided with an air intake structure, and the air intake structure is connected to the air storage chamber; the air intake structure is an air intake channel extending along the extension direction of the bag opening of the inner bag, and the air intake channels of adjacent bag bodies are connected to each other to form a total air intake channel, and an air intake port is provided at one end of the total air intake channel.

[0013] Furthermore, the multiple bag bodies are rolled together along the distribution direction of the multiple bag bodies. When rolling, the second bag cap is folded over the back of the outer bag to expose the first bag cap, and the first adhesive strip does not overlap with the second adhesive strip.

[0014] The present invention further provides a method for making a courier bag, comprising the following steps:

[0015] Heat-sealing a double-layer film to form a plurality of heat-sealing lines to form an inflatable bag having a plurality of air storage chambers distributed along a first direction, wherein the inflatable bag has a first end and a second end located in a second direction, wherein the first direction is perpendicular to the second direction;

[0016] The inflatable bag and a layer of film are overlapped and folded together, so that the inflatable bag is placed in the inner layer, and the first end of the inflatable bag protrudes from the corresponding first end of the film, and the second end of the inflatable bag protrudes from the first end of the inflatable bag, so as to form a first bag cap; the second end of the film at least protrudes from the first end of the film, so as to form a second bag cap;

[0017] Applying glue on the outer surface of the first end and / or the inner surface of the second end of the inflatable bag to form a first glue strip extending along the first direction; applying glue on the inner surface of the second end and / or the outer surface of the first end of the film to form a second glue strip extending along the first direction, and covering the first glue strip and the second glue strip with release films respectively;

[0018] Heat-seal the inflatable bag and the film to form a plurality of heat-seal edges, wherein the plurality of heat-seal edges are spaced apart along the first direction, and each heat-seal edge extends along the second direction and at least avoids a portion used to form the first bag cap and the second bag cap;

[0019] An easy-tear line is arranged on the heat-sealed edge, and the easy-tear line extends along the second direction without avoiding the parts used to form the first bag cap and the second bag cap.

[0020] Furthermore, the first end of the inflatable bag is closed, and the second end has a total air intake channel connected to each air storage chamber, and one end of the total air intake channel is provided with an air inlet; the first rubber strip is arranged on the outer surface of the first end of the inflatable bag.

[0021] The method also includes the following steps: folding the portion of the film used to form the second bag cap to the side of the film facing away from the inflatable bag to expose the portion of the inflatable bag used to form the first bag cap, and the first adhesive strip and the second adhesive strip do not overlap; and rolling up along the first direction.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The bag body of the present invention comprises an inflatable inner bag and an outer bag arranged outside the inner bag, forming a double-layer structure, which can cushion the packed articles. The bag opening of the inner bag of the present invention is located outside the bag opening of the outer bag, and the inner bag is provided with a first bag cap, and the first bag cap and / or the bag body of the inner bag are provided with a first adhesive strip for closing the bag opening of the inner bag, and the outer bag is provided with a second bag cap, and the second bag cap and / or the bag body of the outer bag are provided with a second adhesive strip for closing the bag opening of the outer bag. Therefore, the inner bag and the outer bag of the present invention can be sealed, which can prevent articles from falling from the gap between the inner bag and the outer bag, and effectively prevent others from seeing the articles in the bag from the gap, thereby increasing privacy.

[0024] 2. The present invention uses at least two adhesive strips for sealing, which can improve the flatness of the winding end surface, make it less likely to deviate during winding, improve winding efficiency, and increase the number of meters of winding. If a single adhesive strip is used for sealing, it is easy to slip and cannot be wound for multiple meters.

[0025] 3. When rolling up, the second bag cap is folded on the back of the outer bag to expose the first bag cap, so that the total air inlet and air inlet of multiple bag bodies are exposed to the outside, so that when the user uses the product, it is convenient to use automatic inflation and sealing equipment to continuously inflate and seal the connecting ports of each air storage chamber, thereby improving packaging efficiency.

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the express bag and the manufacturing method thereof of the present invention are not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a single bag body of the present invention. Figure 1 (Not inflated state);

[0028] Figure 2 This is a schematic diagram of the structure of a single bag body of the present invention. Figure 2 (Not inflated state);

[0029] Figure 3 It is a schematic diagram of the structure of multiple bags of the present invention combined together (uninflated state);

[0030] Figure 4 Schematic diagram of the winding of the present invention (uninflated state);

[0031] In the figure, 10, bag body; 101, main air inlet channel; 1, outer bag; 11, second bag cap; 2, inner bag; 21, first bag cap; 22, air storage chamber; 23, connecting port; 24, air inlet channel; 3, first rubber strip; 4, second rubber strip; 5, easy-tear line. DETAILED DESCRIPTION

[0032] In the present invention, the terms "first", "second", etc. are only used to distinguish similar objects, rather than to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more, and "several" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0033] See also Figure 1-Figure 4As shown, a courier bag of the present invention comprises a bag body 10, the bag body 10 comprises an inflatable inner bag 2 and an outer bag 1 arranged outside the inner bag 2, the bag opening of the inner bag 2 is located outside the bag opening of the outer bag 1, the inner bag 2 is provided with a first bag cap 21, the first bag cap 21 and / or the bag body of the inner bag 2 are provided with a first adhesive strip 3 for closing the bag opening of the inner bag 2; the outer bag 1 is provided with a second bag cap 11, the second bag cap 11 and / or the bag body of the outer bag 1 are provided with a second adhesive strip 4 for closing the bag opening of the outer bag 1. Specifically, in this embodiment, the first adhesive strip 3 is arranged at a position near the bag opening of the bag body of the inner bag 2 on the outer surface, and extends along the extension direction of the bag opening of the inner bag 2, and the first adhesive strip 3 is used to bond with the first bag cap 21. The second adhesive strip 4 is arranged at the end position of the inner surface of the second bag cap 11 of the outer bag 1, and extends along the extension direction of the bag opening of the outer bag 1, and the second adhesive strip 4 is used to bond with the bag body of the outer bag 1. The second bag cap 11 is located on the same side as the first bag cap 21, and the second bag cap 11 protrudes from the first bag cap 21 in a direction perpendicular to the extending direction of the bag opening of the outer bag 1. The first adhesive strip 3 and the second adhesive strip 4 are respectively covered with release films (not shown in the figure). Figure 1 In the figure, the direction of the Y-axis is the extension direction of the bag opening of the inner bag 2 and the bag opening of the outer bag 1. The bag opening of the outer bag 1 and the bag opening of the inner bag 2 are the bag openings of the bag body 10. The direction of the X-axis indicates the bag depth direction of the bag body 10, that is, the depth direction of the bag body 10.

[0034] In this embodiment, the inner bag 2 is formed with an air storage chamber 22 so that the inner bag 2 can be bulged after inflation to achieve a buffering effect. An air intake structure is provided on the first bag cap 21, and the air intake structure is connected to the air storage chamber 22. The air intake structure specifically includes an air intake channel 24 extending along the extension direction of the bag opening of the inner bag 2. The air storage chamber 22 is set to be a plurality of air storage chambers 22, and the plurality of air storage chambers 22 are distributed along the extension direction of the bag opening of the inner bag 2, and the adjacent air storage chambers 22 are separated from each other, and each air storage chamber 22 is provided with a connecting port 23 with the air intake channel 24. In the figure, the reference numerals 22, 23, and 24 are used to simply illustrate the positions of the air storage chamber, the connecting port, and the air intake channel. The two opposite sides of each air storage chamber 22 in the extension direction of the bag opening of the inner bag 2 are roughly wavy and symmetrical to each other. In this way, after the air storage chamber 22 is inflated, it is roughly a gourd ball string structure in which a plurality of gourd balls are connected in sequence, so that the structure is relatively stable, easy to fold, and has a good anti-slip effect and can withstand relatively large pressure. In other embodiments, the air storage chamber 22 is cylindrical after being inflated.

[0035] In this embodiment, the two opposite sides of the bag body of the inner bag 2 in the direction of the bag opening of the inner bag 2 are respectively connected to the two opposite sides of the bag body of the outer bag 1 in the direction of the bag opening of the outer bag 1 by heat sealing. In this way, the inner bag 2 and the outer bag 1 have two opposite bag surfaces. The two bag surfaces of the inner bag 2 are respectively provided with air storage chambers 22, and the air storage chambers 22 on one bag surface of the inner bag 2 are connected one by one with the air storage chambers 22 on the other bag surface at the bag bottom of the inner bag 2. The first bag cap 21 of the inner bag 2 is provided on one bag surface, and the first adhesive strip 3 is provided on the other bag surface.

[0036] In this embodiment, the inner bag 2 is made of a double-layer film, the air storage chamber 22 is formed between the double-layer film by heat sealing, and the outer bag 2 is made of a colored film.

[0037] The above-mentioned bag bodies 10 are provided in a plurality, and the plurality of bag bodies 10 are integrally formed and arranged along the extension direction of the bag opening of the inner bag 2, and the bag openings of the plurality of bag bodies 10 face the same side, the first adhesive strips 3 on adjacent bag bodies 10 are integrally connected, and the second adhesive strips 4 on adjacent bag bodies 10 are also integrally connected. An easy tear line 5 is provided between adjacent bag bodies 10, and the easy tear line 5 extends along the bag depth direction. In this way, when tearing along the easy tear line 5, a single bag body 10 can be separated. Figure 3 In the embodiment, three bag bodies 10 are used as an example, but the invention is not limited thereto. Under normal circumstances, the number of bag bodies 10 is greater than or equal to ten, and the total length is several meters. The air inlet passages 24 of adjacent bag bodies 10 are interconnected to form a total air inlet passage 101, and an air inlet port is provided at one end of the total air inlet passage 101.

[0038] The plurality of bag bodies 10 are rolled together along the arrangement direction of the plurality of bag bodies 10. When rolling, the second bag cap 11 is folded over the back of the outer bag 1 to expose the first bag cap 21, and the first adhesive strip 3 and the second adhesive strip 4 do not overlap. Figure 4 As shown. In this way, the total air inlet 101 and the air inlet of the multiple bag bodies 10 are exposed to the outside, so that when the user uses the product, it is convenient to use the automatic inflation and sealing equipment to continuously inflate and seal the connecting openings 23 of each air storage chamber 22, thereby improving the packaging efficiency. Specifically, during inflation, the gas output by the automatic inflation and sealing equipment enters from the air inlet of the total air inlet channel 101, and enters each air inlet channel 24 in turn. The gas entering the air inlet channel 24 then enters each air storage chamber 22 from the connecting opening 23 between each air storage chamber 22 and the air inlet channel 24. After inflation, the automatic inflation and sealing equipment heat-seals the connecting opening 23 between each air storage chamber 22 and the air inlet channel 24.

[0039] After the express bag of the present invention is inflated, it can be torn open along each tear line 5, and each bag body 10 that has been inflated can be separated one by one to be used for packaging articles. When in use, the article is put into the inner bag 2, and the first bag cap 21 of the inner bag 2 is bonded to the bag body through the first adhesive strip 3, so that the article is sealed in the inner bag 2; then, the second bag cap 11 of the outer bag 1 is bonded to the bag body of the outer bag 1 through the second adhesive strip 4, so that the article and the inner bag 2 are both covered therein.

[0040] The courier bag of the present invention has an inner bag 2 and an outer bag 1 that can be sealed, which can prevent items from falling from the gap between the inner bag 2 and the outer bag 1, and effectively prevent others from seeing the items in the bag from the gap, thereby increasing privacy. In addition, the present invention uses double adhesive strips for sealing, which can improve the flatness of the winding end surface, making it less likely to deviate during winding, improving winding efficiency, and increasing the number of meters of winding. If a single adhesive strip is used for sealing, it is easy to slip and cannot be wound for multiple meters.

[0041] A method for making a courier bag of the present invention comprises the following steps:

[0042] The double-layer film is heat-sealed to form a plurality of heat-sealed lines, so as to form an inflatable bag having a plurality of air storage chambers 22 distributed along a first direction, and the inflatable bag has a first end and a second end located in a second direction and is closed, the first direction is perpendicular to the second direction, the first direction is the direction of the Y axis, and the second direction is the direction of the X axis;

[0043] The inflatable bag is overlapped with a layer of film and folded so that the inflatable bag is placed in the inner layer; the film also has a first end and a second end located in the second direction, the first end of the inflatable bag protrudes from the first end of the film located on the same side as the inflatable bag, and the second end of the inflatable bag protrudes from the first end of the inflatable bag to form a first bag cap 21; the second end of the film protrudes from the first end of the film and the second end of the inflatable bag to form a second bag cap 11;

[0044] Apply glue to the outer surface of the first end and / or the inner surface of the second end of the inflatable bag to form a first glue strip 3 extending along the first direction, apply glue to the outer surface of the first end and / or the inner surface of the second end of the film to form a second glue strip 4 extending along the first direction, and cover the first glue strip 3 and the second glue strip 4 with release films respectively;

[0045] The inflatable bag and the film are heat-sealed to form a plurality of heat-sealed edges, the plurality of heat-sealed edges are spaced apart along the first direction, and each heat-sealed edge extends along the second direction, avoiding the portions used to form the first bag cap 21 and the second bag cap 11, and also avoiding the bag openings of the formed inner bag and the outer bag;

[0046] An easy-tear line 5 is arranged on the heat-sealed edge, and the easy-tear line 5 extends along the second direction without avoiding the portion used to form the first bag cap 21 and the second bag cap 11 .

[0047] The above-mentioned inflatable bag is used to form the inner bag 2, the film is used to form the outer bag 1, an air storage chamber 22 is defined between adjacent heat-sealed lines, the heat-sealed edge forms the connecting side edge of the inner bag 2 and the outer bag 1, and the tear line 5 is roughly located on the center line of the heat-sealed edge.

[0048] In this embodiment, the first end of the inflatable bag is closed, and the second end has a general air inlet channel 101 connected to each air storage chamber 22, and one end of the general air inlet channel 101 is provided with an air inlet. The first end of the inflatable bag is provided with a first adhesive strip 3 on the outer surface, and the second end of the film is provided with a second adhesive strip 4 on the inner surface, but the invention is not limited thereto. The above film can be colored to increase privacy.

[0049] In this embodiment, the method for making a courier bag further includes the following steps:

[0050] The portion of the film used to form the second bag cap 11 is folded outward, that is, folded to the side of the film facing away from the inflatable bag, so as to expose the portion of the inflatable bag used to form the first bag cap 21. Specifically, the portion of the film used to form the second bag cap 11 is folded away from the bag opening along the edge line close to the inner bag opening; the film is rolled up along the first direction, and the portion of the film used to form the second bag cap 11 faces inward. When rolling up, the first rubber strip 3 and the second rubber strip 4 are arranged in parallel, which can improve the flatness of the rolling end surface, make it less likely to deviate during rolling up, improve the rolling efficiency, and increase the number of meters rolled up.

[0051] The present invention provides a courier bag and a method for making the same, and the unrelated parts are the same as the prior art or can be implemented by using the prior art.

[0052] The above embodiments are only used to further illustrate a courier bag and a method for making the same of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A courier bag, comprising a bag body, characterized in that: The bag body includes an inflatable inner bag and an outer bag arranged outside the inner bag, the bag opening of the inner bag is located outside the bag opening of the outer bag, the inner bag is provided with a first bag cap, and the first bag cap and / or the bag body of the inner bag are provided with a first adhesive strip for closing the bag opening of the inner bag; the outer bag is provided with a second bag cap, and the second bag cap and / or the bag body of the outer bag are provided with a second adhesive strip for closing the bag opening of the outer bag.

2. The courier bag according to claim 1, characterized in that: The inner bag forms an air storage chamber, and the first bag cap is provided with an air intake structure, which is connected to the air storage chamber; the first adhesive strip is arranged on the outer surface of the bag body of the inner bag and extends along the extension direction of the bag opening of the inner bag, and the first adhesive strip is used to bond with the first bag cap.

3. The courier bag according to claim 2, characterized in that: The air intake structure includes an air intake channel extending along the extension direction of the bag opening of the inner bag; the air storage chambers are provided in a plurality, and the plurality of air storage chambers are distributed along the extension direction of the bag opening of the inner bag, and adjacent air storage chambers are separated from each other, and each air storage chamber is provided with a connecting port to the air intake channel.

4. The courier bag according to claim 2, characterized in that: The two opposite sides of the bag body of the inner bag in the extending direction of the bag opening of the inner bag are respectively connected to the two opposite sides of the bag body of the outer bag in the extending direction of the bag opening of the outer bag, so that the outer bag and the inner bag respectively have two bag surfaces arranged oppositely; the air storage chambers are respectively provided on the two bag surfaces of the inner bag, and the air storage chamber on one bag surface of the inner bag is integrally connected with the air storage chamber on the other bag surface at the bag bottom of the inner bag, the first bag cap of the inner bag is provided on one bag surface, and the first adhesive strip is provided on the other bag surface.

5. The courier bag according to claim 2, characterized in that: The inner bag is made of a double-layer film, the air storage chamber is formed by heat sealing between the double-layer films, and the outer bag is made of a colored film.

6. The courier bag according to claim 1, characterized in that: The second adhesive strip is arranged on the second bag cap of the outer bag and extends along the extending direction of the bag opening of the outer bag, and the second adhesive strip is used to be bonded to the bag body of the outer bag; The second bag cap is located on the same side as the first bag cap; the second bag cap protrudes from the first bag cap in the bag depth direction of the outer bag; and the first adhesive strip and the second adhesive strip are respectively covered with release films.

7. The courier bag according to any one of claims 1 to 5, characterized in that: The bag bodies are provided in plurality, the plurality of bag bodies are integrally formed and distributed along the extension direction of the bag opening of the inner bag, and the bag openings of the plurality of bag bodies face the same side; a tear line is provided between adjacent bag bodies, and the tear line extends along the bag depth direction of the bag body.

8. The courier bag according to claim 6, characterized in that: The inner bag is formed with an air storage chamber, and the first bag cap is provided with an air intake structure, which is connected to the air storage chamber; the air intake structure is an air intake channel extending along the extension direction of the bag opening of the inner bag, and the air intake channels of adjacent bag bodies are connected to each other to form a total air intake channel, and an air intake port is provided at one end of the total air intake channel; The multiple bag bodies are rolled together along the distribution direction of the multiple bag bodies. When rolling, the second bag cap is folded on the back of the outer bag to expose the first bag cap, and the first adhesive strip does not overlap with the second adhesive strip.

9. A method for making a courier bag, characterized in that: The following steps are involved: Heat-sealing a double-layer film to form a plurality of heat-sealing lines to form an inflatable bag having a plurality of air storage chambers distributed along a first direction, wherein the inflatable bag has a first end and a second end located in a second direction, wherein the first direction is perpendicular to the second direction; The inflatable bag and a layer of film are overlapped and folded together, so that the inflatable bag is placed in the inner layer, and the first end of the inflatable bag protrudes from the corresponding first end of the film, and the second end of the inflatable bag protrudes from the first end of the inflatable bag, so as to form a first bag cap; the second end of the film at least protrudes from the first end of the film, so as to form a second bag cap; Applying glue on the outer surface of the first end and / or the inner surface of the second end of the inflatable bag to form a first glue strip extending along the first direction; applying glue on the inner surface of the second end and / or the outer surface of the first end of the film to form a second glue strip extending along the first direction, and covering the first glue strip and the second glue strip with release films respectively; Heat-seal the inflatable bag and the film to form a plurality of heat-seal edges, wherein the plurality of heat-seal edges are spaced apart along the first direction, and each heat-seal edge extends along the second direction and at least avoids a portion used to form the first bag cap and the second bag cap; An easy-tear line is arranged on the heat-sealed edge, and the easy-tear line extends along the second direction without avoiding the parts used to form the first bag cap and the second bag cap.

10. The method for making a courier bag according to claim 9, characterized in that: The first end of the inflatable bag is closed, and the second end has a general air inlet passage connected to each air storage chamber, and one end of the general air inlet passage is provided with an air inlet; The first adhesive strip is arranged on the outer surface of the first end of the inflatable bag. The method also includes the following steps: folding the portion of the film used to form the second bag cap to the side of the film facing away from the inflatable bag to expose the portion of the inflatable bag used to form the first bag cap, and the first adhesive strip and the second adhesive strip do not overlap; and rolling up along the first direction.

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