Waterproof and tear-resistant film express bag

Abstract

The utility model relates to the technical field of express bags, and discloses a waterproof and tear-resistant film express bag which comprises an express bag body, a sealing tongue is arranged at an opening of the express bag body, a sealing rubber strip is fixedly connected to the inner wall of the sealing tongue, the express bag body comprises an outer film and an inner film, and the outer film and the inner film are arranged on the outer film. A tensile layer is arranged between the outer-layer film and the inner-layer film, and the outer-layer film and the inner-layer film are hot-pressed to form a whole to wrap the tensile layer inside. According to the waterproof and tear-resistant film express bag, the outer-layer film, the tensile layer and the inner-layer film are stacked to form a material for preparing the express bag body, so that in the using process, the tensile layer can increase the strength of the express bag body and improve the tensile property of the express bag body, the materials are stacked through hot pressing, film covering and other processes, the preparation process is simple, the cost is low, and the waterproof and tear-resistant film express bag is suitable for popularization and application. And after the outer-layer film is worn, the inner-layer film can also play a protection role under the protection of the tensile layer, so that the tensile and waterproof effects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of express delivery bag technology, specifically a waterproof and tear-resistant thin-film express delivery bag. Background Technology

[0002] A courier bag is a bag used to hold express packages, serving to prevent packages from falling apart and to protect the privacy of the recipient. It is usually made of thin plastic film.

[0003] Plastic film express delivery bags are often easily torn and damaged during use due to factors such as the delivery method used by the courier, the stacking method, and the excessive weight of the packages. Damaged express delivery bags can no longer serve their purpose of protecting the packages.

[0004] Chinese Patent Publication No. CN 220701920 U discloses "A Tear-Resistant Express Bag", which includes a protective outer bag and a storage inner bag disposed inside the protective outer bag. The storage inner bag has a zipper strip at the top opening and a zipper head on one side of the zipper strip. The protective outer bag has a bag flap on one side of the top. A connecting strip is provided between the storage inner bag and the protective outer bag. A placement card is provided on the side of the protective outer bag away from the bag flap.

[0005] The aforementioned utility model firstly uses a strong strap to prevent the protective outer bag from tearing into a large opening when it is scratched or torn, thus improving the protective effect. The reinforcing rope and strong fiber mesh further enhance the tear resistance of the protective outer bag, improving the protective effect. The protective outer bag and the inner storage bag further protect the items inside the inner storage bag, preventing them from falling out and improving the overall usability.

[0006] However, its complex structure, coupled with the fact that express delivery bags are disposable, leads to increased delivery costs.

[0007] To address this, a waterproof and tear-resistant thin-film express bag was proposed, which improves the tear resistance of the express bag while reducing the manufacturing cost. Utility Model Content

[0008] The purpose of this invention is to provide a waterproof and tear-resistant thin-film express delivery bag to solve the problems mentioned in the background art.

[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a waterproof and tear-resistant film express bag, including an express bag body, wherein a sealing tongue is provided at the opening of the express bag body, and a sealing strip is fixedly connected to the inner wall of the sealing tongue;

[0010] The express bag body includes an outer film and an inner film, with a tensile layer provided between the outer film and the inner film, and the outer film and the inner film wrapping the tensile layer inside.

[0011] The outer film, tensile layer, and inner film all have equal projected areas and are wrapped together to form a bag shape;

[0012] When the sealing tongue and sealing strip work together to seal the opening of the express bag body, the sealing tongue completely covers the opening of the express bag body.

[0013] Preferably, the sealing tongue is T-shaped, and both the left and right sides of the sealing tongue extend outward and are foldable.

[0014] Preferably, the sealing strip (3) has a bottom-opening frame structure, the top of the sealing strip (3) is flush with the top of the sealing tongue (2), and the two sides of the sealing strip (3) are flush with the two sides of the sealing tongue (2).

[0015] Preferably, the inner wall of the sealing tongue is adhered to the front of the sealed express bag body, and the two sides of the sealing tongue extend to the back of the sealed express bag body to wrap the opening of the sealed express bag body.

[0016] Preferably, both the outer and inner films are plastic films, and the thickness of the outer film and the thickness of the inner film are equal.

[0017] Preferably, the tensile layer is made of fine cotton thread, and the cross-sectional thickness of the tensile layer is equal to the cross-sectional thickness of the outer film.

[0018] Preferably, the tensile layer is an interwoven mesh with gaps between the mesh openings.

[0019] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0020] First, this utility model uses an outer film, a tensile layer, and an inner film to form the material for preparing the express bag body. In the process of use, the tensile layer can increase the strength and tensile strength of the express bag body. The material can be stacked by hot pressing, lamination and other processes, which is simple to prepare. After the outer film is worn, the inner film can still play a protective role under the protection of the tensile layer, thus achieving the effects of tensile strength and waterproofing.

[0021] Secondly, by setting the sealing tongue in a T-shape and setting an n-shaped sealing strip on the inner wall of the sealing tongue, this utility model can effectively increase the sealing area during sealing. Furthermore, by folding the two sides of the sealing tongue, the opening of the express bag body is completely sealed, preventing rainwater from entering the interior of the express bag body from the opening, thus achieving a further waterproof effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a front view of the structure of this utility model after sealing;

[0024] Figure 3 This is a schematic diagram of the back side of the structure after sealing.

[0025] Figure 4 This is a schematic diagram of the layered structure of the express bag body of this utility model.

[0026] The components include: 1. Express bag body; 101. Outer film; 102. Tensile layer; 103. Inner film; 2. Sealing tongue; 3. Sealing strip. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-4 A waterproof and tear-resistant thin film express bag includes an express bag body 1, a sealing tongue 2 is provided at the opening of the express bag body 1, and a sealing strip 3 is fixedly connected to the inner wall of the sealing tongue 2.

[0029] The express bag body 1 includes an outer film 101 and an inner film 103. A tensile layer 102 is provided between the outer film 101 and the inner film 103. The outer film 101 and the inner film 103 wrap the tensile layer 102 inside.

[0030] The outer film 101, the tensile layer 102, and the inner film 103 all have equal projected areas and are wrapped together in a bag shape;

[0031] When the sealing tongue 2 and the sealing strip 3 work together to seal the opening of the express bag body 1, the sealing tongue 2 completely covers the opening of the express bag body 1, thereby sealing the opening of the express bag body 1 and preventing rainwater from entering the interior of the express bag body 1, thus achieving a waterproof effect.

[0032] The above technical solution uses an outer film 101, a tensile layer 102, and an inner film 103 to form the material for preparing the express bag body 1. During use, the tensile layer 102 can increase the strength and tensile strength of the express bag body 1. The material can be stacked by hot pressing, lamination, and other processes, which is simple to prepare. After the outer film 101 is worn, the inner film 103 can still play a protective role under the protection of the tensile layer 102, thus achieving the effects of tensile strength and waterproofing.

[0033] The purpose of not having a tensile layer 102 in the sealing tongue 2 is to facilitate the opening and unpacking of the express delivery. When the sealing tongue 2 contains a tensile layer 102, the sealed express delivery bag cannot be easily opened by tearing it open by hand.

[0034] Specifically, the sealing tongue 2 is T-shaped, with both the left and right sides extending outwards and being foldable.

[0035] By using the above technical solution, the sealing tongue 2 is set in a T-shape, which increases the contact area between the sealing tongue 2 and the surface of the express bag body 1, thereby improving the sealing performance of the sealing tongue 2. Moreover, compared with a straight sealing tongue, the sealing tongue 2 in this technical solution has stronger tensile strength.

[0036] Specifically, the sealing strip 3 has a bottom-opening frame structure, with the top of the sealing strip 3 flush with the top of the sealing tongue 2, and the two sides of the sealing strip 3 flush with the two sides of the sealing tongue 2.

[0037] By using the above technical solution, the sealing strip 3 is set as a bottom-opening frame structure, so that when the express bag body 1 and the sealing tongue 2 are bonded, the edge of the connection between the express bag body 1 and the sealing tongue 2 can be sealed, which can effectively prevent rainwater and other fluids from seeping into the interior of the express bag body 1 from the connection between the express bag body 1 and the sealing tongue 2 and wetting the express.

[0038] Specifically, after the sealing tongue 2 is folded down, the front of the sealing strip 3 adheres to the front of the express bag body 1, and the two sides of the sealing tongue 2 are turned over to the back of the express bag body 1, so that the two sides of the sealing strip 3 adhere to the back of the express bag body 1.

[0039] The above technical solution achieves two main functions through this connection method: First, the folded sealing tongue 2 can wrap around the opening of the express bag body 1. When the front of the sealing tongue 2 is subjected to tension, the sealing tongue 2 will be pulled by the folded edges on both sides, making it less easy to pull open. Second, it increases the connection area between the express bag body 1 and the sealing tongue 2, thereby completely wrapping the opening of the express bag body 1 and preventing rainwater from seeping into the interior of the express bag body 1 through the connection between the express bag body 1 and the sealing tongue 2.

[0040] Specifically, both the outer film 101 and the inner film 103 are plastic films, and the outer film 101 and the inner film 103 have the same thickness.

[0041] By using the above technical solution, the outer film 101 and the inner film 103 are made of plastic films with the same material and thickness, which reduces the complexity of the preparation process. There is no need to specially customize inner and outer layers with different thicknesses or materials. During the processing, the raw materials can be placed on the upper and lower rollers for feeding and connected by hot pressing or coating devices.

[0042] Specifically, the tensile layer 102 is made of fine cotton thread, and the cross-sectional thickness of the tensile layer 102 is equal to the cross-sectional thickness of the outer film 101.

[0043] Through the above technical solution, fine cotton thread is a conventional material, which is convenient for material preparation during the manufacturing process. The cotton thread can be drawn into a thinner state through the stretching process, and the material is softer. The thinner diameter makes it more flexible and reduces the thickness of the express bag body 1. When used as the inner core of the express bag body 1, it can keep the express bag body 1 soft and roll it up for storage. If plastic filament is used, the plastic filament is tough and not easy to roll up for storage.

[0044] Specifically, the tensile layer 102 is an interwoven mesh with gaps between the mesh openings.

[0045] Through the above technical solution, the tensile layer 102 is made into a cross-mesh, which can improve the tensile performance of the tensile layer 102. Thus, if the tensile layer 102 is subjected to force at any angle, the force will be distributed by the other threads. The purpose of setting gaps between the tensile layers 102 is twofold: first, to reduce the amount of material used, thereby reducing the weight of the express bag body 1; second, to make the outer surface of the express bag body 1 slightly uneven, so as to play a role in preventing slippage and increasing friction when picking up express packages or when the express packages are transported on the conveyor belt.

[0046] In use, the material for preparing the express bag body 1 is formed by stacking an outer film 101, a tensile layer 102, and an inner film 103. During use, the tensile layer 102 can increase the strength and tensile strength of the express bag body 1. The material can be stacked by hot pressing, lamination, and other processes, which is simple to prepare. After the outer film 101 is worn, the inner film 103 can still play a protective role under the protection of the tensile layer 102, thus achieving the effects of tensile strength and waterproofing.

[0047] By setting the sealing tongue 2 in a T-shape and setting an n-shaped sealing strip 3 on the inner wall of the sealing tongue 2, the sealing area can be effectively increased during sealing. The opening of the express bag body 1 can be completely sealed by folding the two sides of the sealing tongue 2, preventing rainwater from entering the interior of the express bag body 1 from the opening, thus achieving a further waterproof effect.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof and tear-resistant film express bag, comprising an express bag body (1), wherein the opening of the express bag body (1) is provided with a sealing tongue (2), and a sealing strip (3) is fixedly connected to the inner wall of the sealing tongue (2). Its features are: The express bag body (1) includes an outer film (101) and an inner film (103), and a tensile layer (102) is provided between the outer film (101) and the inner film (103), and the outer film (101) and the inner film (103) wrap the tensile layer (102) inside; The outer film (101), tensile layer (102) and inner film (103) have equal projected areas and are wrapped together in a bag shape; When the sealing tongue (2) and sealing strip (3) are used to seal the opening of the express bag body (1), the sealing tongue (2) completely covers the opening of the express bag body (1). The sealing tongue (2) is T-shaped, and both the left and right sides of the sealing tongue (2) extend outward and can be folded.

2. The waterproof and tear-resistant film express bag according to claim 1, characterized in that: The sealing strip (3) has a bottom-opening frame structure. The top of the sealing strip (3) is flush with the top of the sealing tongue (2), and the two sides of the sealing strip (3) are flush with the two sides of the sealing tongue (2).

3. The waterproof and tear-resistant film express bag according to claim 1, characterized in that: The inner wall of the sealing tongue (2) is adhered to the front of the sealed express bag body (1), and the two sides of the sealing tongue (2) extend to the back of the sealed express bag body (1) to wrap the opening of the sealed express bag body (1).

4. The waterproof and tear-resistant film express bag according to claim 1, characterized in that: Both the outer film (101) and the inner film (103) are plastic films, and the thickness of the outer film (101) and the thickness of the inner film (103) are equal.

5. A waterproof and tear-resistant film express bag according to claim 4, characterized in that: The tensile layer (102) is made of fine cotton thread, and the cross-sectional thickness of the tensile layer (102) is equal to the cross-sectional thickness of the outer film (101).

6. A waterproof and tear-resistant film express bag according to claim 5, characterized in that: The tensile layer (102) is an interwoven mesh with gaps between the mesh openings.

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