Durable polypropylene woven mailbag
By using a multi-layered design of inner and outer bags made of polypropylene, combined with elastomers, reinforcing filaments, and protective layers, the problem of poor durability of traditional plastic mailbags is solved, achieving high strength, multi-layered protection, and a protective effect.
Patent Information
- Application Number
- CN202423101348.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Traditional plastic mailbags are not durable and are easily damaged during long-distance transportation and frequent handling, resulting in damage to goods.
The inner and outer bags are made of polypropylene and feature a multi-layer design. The inner bag has an elastomer and multiple reinforcing filaments fixed to its outer wall, while the outer bag has a wear-resistant, corrosion-resistant, and waterproof layer. The combination of thermoplastic rubber and nylon reinforcing filaments enhances structural stability and provides a protective layer.
It improves the overall strength and abrasion resistance of mailbags, provides multi-layered protection against breakage and chemical corrosion, and maintains the mailbag's good performance in harsh environments.
Smart Images

Figure CN223575066U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the packaging material technical field, specifically to a durable polypropylene woven mail bag. BACKGROUND
[0002] The logistics has entered the life of the public with its convenient and fast characteristics, especially with the rapid development of online shopping, the logistics has become the support of this industry. Due to the strong economy, the current logistics container mail bag is mostly woven bag. The woven bag is a common packaging material, which is generally made of plastic as raw material, extruded into a flat silk, and then woven to obtain. In the process of packaging and transportation, the woven bag is mainly subjected to the action of the gravity of the packaged object and is always in tension. Due to the longitudinal and transverse interlacing transmission, the woven bag has good tensile resistance and puncture resistance, and will not easily break, so it has been widely used.
[0003] Although the traditional plastic mail bag has low cost, these materials generally have poor durability. During long-term transportation and frequent handling, the mail bag is easy to break, resulting in damage to the goods. CONTENT OF THE INVENTION
[0004] In view of the defects of the prior art, the present application provides a durable polypropylene woven mail bag, which has the advantages of improving the wear resistance of the mail bag, and solves the problem of poor durability of the traditional plastic mail bag, which is easy to break during long-term transportation and frequent handling, resulting in damage to the goods.
[0005] To achieve the above purpose, the present application provides the following technical scheme: a durable polypropylene woven mail bag, comprising a mail bag body, the mail bag body comprising an inner bag, the inner bag outer wall is fixedly provided with an elastic body, the elastic body is fixedly provided with a plurality of reinforcing filaments in the inside, and the elastic body outer wall is fixedly connected with an outer bag.
[0006] Through the above scheme, the elastic body fixedly provided on the outer wall of the inner bag provides an additional buffer and protection layer for the mail bag, increases the overall strength and wear resistance of the mail bag, and the plurality of reinforcing filaments fixedly provided in the inside of the elastic body further enhances the structural stability of the mail bag, so that it can withstand greater weight and pressure. The use of the elastic body makes the mail bag maintain good elasticity when subjected to external force, and is not easy to break in the process of mailing. The composite design of the inner bag and the outer bag provides multi-level protection. The inner bag can be used for direct loading of goods, and the outer bag provides additional wear resistance, corrosion resistance or waterproof function. The mail bag provides the advantages of high strength, good elasticity and multi-layer protection by combining the multi-layer design of the inner bag, the elastic body, the reinforcing filaments and the outer bag.
[0007] Further, the inner bag comprises a plurality of warp threads and weft threads arranged in an up-and-down staggered weaving manner, and the plurality of warp threads and weft threads are made of polypropylene material.
[0008] Through the above scheme, the polypropylene material itself has high strength and wear resistance, the inner bag woven by polypropylene warp threads and weft threads can withstand greater tension and pressure, and the up-and-down staggered weaving of the warp threads and weft threads further enhances the structural strength of the inner bag, making it more durable and tightly woven to form a stable mesh structure, which helps to maintain the shape and stability of the inner bag.
[0009] Further, the outer bag comprises a wear-resistant layer, a corrosion-resistant layer and a waterproof layer, the waterproof layer is fixedly arranged on the inner wall of the corrosion-resistant layer, and the wear-resistant layer is fixedly arranged on the outer wall of the corrosion-resistant layer.
[0010] Through the above scheme, the wear-resistant layer is located at the outermost layer of the outer bag and directly faces the friction and wear of the external environment, which can effectively protect the mail bag from physical damage, the corrosion-resistant layer is located between the wear-resistant layer and the waterproof layer, which plays a role in isolating external corrosive substances and protecting the inside of the mail bag from chemical corrosion, and the waterproof layer is tightly attached to the inner wall of the corrosion-resistant layer to ensure that the inside of the mail bag is not penetrated and eroded by water, keeping the mail dry and safe. The setting of the wear-resistant layer, the corrosion-resistant layer and the waterproof layer enables the mail bag to maintain good performance in harsh environments and is not easy to be damaged.
[0011] Further, the upper end of the mail bag body is fixedly connected with a binding edge, two mirror image distributed rope holes are fixedly arranged on the outer wall of the binding edge, and a drawstring is slidably connected in the binding edge.
[0012] Through the above scheme, the cooperation of the drawstring and the rope hole makes the mail bag can be easily opened and closed, the user only needs to pull the drawstring to easily adjust the opening size of the mail bag, which is convenient for loading and taking out the articles, and the drawstring can tightly tighten the opening of the mail bag to prevent the articles from sliding or losing during transportation.
[0013] Further, the elastic body is made of thermoplastic rubber material, and the plurality of reinforcing filaments are made of nylon material.
[0014] Through the above scheme, thermoplastic rubber is a material with high elasticity and recovery, which can quickly recover to the original shape after being subjected to external force, thereby effectively absorbing and dispersing impact force to protect the inside of the mail bag from damage, and nylon is a synthetic fiber material with high strength and wear resistance, the reinforcing filaments made of nylon material can enhance the structural strength and wear resistance of the elastic body, and the nylon filaments also have good tensile and tear resistance, so that the mail bag is not easy to break or deform when subjected to heavy objects or external forces.
[0015] Further, the wear-resistant layer is woven by high-wear-resistant polypropylene filaments.
[0016] Through the above scheme, the high-wear-resistant polypropylene yarn is known for its excellent wear resistance, can withstand greater friction and wear, thereby effectively prolonging the service life of the mail bag.
[0017] Further, the corrosion-resistant layer is made of polyester fiber.
[0018] Through the above scheme, the polyester fiber has excellent corrosion resistance, can effectively resist the corrosion of various chemicals, thereby protecting the inside of the mail bag from chemical corrosion. In humid or corrosive environments, the polyester fiber corrosion-resistant layer can significantly prolong the service life of the mail bag.
[0019] Further, the waterproof layer is woven from waterproof polypropylene yarn.
[0020] Through the above scheme, the waterproof polypropylene yarn is specially treated and has excellent waterproof performance, which can effectively block the penetration of water and ensure that the inside of the mail bag remains dry, thereby protecting the mail from moisture and water damage. In rainy or humid environments, the waterproof layer woven from waterproof polypropylene yarn can significantly reduce the risk of moisture inside the mail bag.
[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:
[0022] The durable polypropylene woven mail bag provides an additional cushioning and protection layer for the mail bag through the elastic body fixedly arranged on the inner bag outer wall, increases the overall strength and wear resistance of the mail bag, and the multiple reinforcing filaments fixedly arranged inside the elastic body further enhance the structural stability of the mail bag, so that it can withstand greater weight and pressure. The use of the elastic body makes the mail bag maintain good elasticity when subjected to external force, and is not easy to break during mailing due to external force. The composite design of the inner bag and the outer bag provides multi-level protection. The inner bag can be used for direct loading of goods, and the outer bag provides additional wear resistance, corrosion resistance or waterproof function. The mail bag combines the multi-layer design of the inner bag, the elastic body, the reinforcing filaments and the outer bag, and provides the advantages of high strength, good elasticity and multi-layer protection. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 is the overall structure schematic diagram of the structure of the present application;
[0024] Figure 2 is the mail bag body sectional view of the present application;
[0025] Figure 3 is the overall structure schematic diagram of the inner bag of the present application;
[0026] Figure 4 is the structure schematic diagram of the outer bag of the present application.
[0027] In the drawings:
[0028] 1, mail bag body; 101, inner bag; 1011, warp; 1012, weft; 102, elastomer; 103, reinforcing wire; 104, outer bag; 1041, wear-resistant layer; 1042, corrosion-resistant layer; 1043, waterproof layer; 2, edge covering; 3, rope hole; 4, rope. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.
[0030] Please refer to Figure 1 , Figure 2 and Figure 3 , a durable polypropylene woven mail bag in the embodiment includes a mail bag body 1, the mail bag body 1 includes an inner bag 101, the outer wall of the inner bag 101 is fixedly provided with an elastomer 102, and a plurality of reinforcing wires 103 are fixedly arranged inside the elastomer 102. The elastomer 102 fixedly arranged on the outer wall of the inner bag 101 provides an additional buffer and protection layer for the mail bag, increases the overall strength and wear resistance of the mail bag, the plurality of reinforcing wires 103 fixedly arranged inside the elastomer 102 further enhance the structural stability of the mail bag, so that it can withstand greater weight and pressure. The use of the elastomer 102 enables the mail bag to maintain good elasticity when subjected to external force, and it is not easy to be broken in the process of mailing due to external force. The outer wall of the elastomer 102 is fixedly connected with an outer bag 104, and the composite design of the inner bag 101 and the outer bag 104 provides multi-level protection. The inner bag 101 can be used for directly loading goods, and the outer bag 104 provides additional wear-resistant, corrosion-resistant or waterproof function. The mail bag combines the multi-layer design of the inner bag 101, the elastomer 102, the reinforcing wire 103 and the outer bag 104, and provides the advantages of high strength, good elasticity and multi-layer protection.
[0031] Please refer to Figure 2 , Figure 3 and Figure 4The inner bag 101 comprises a plurality of warp threads 1011 and weft threads 1012 arranged in an up-and-down staggered manner, and the warp threads 1011 and the weft threads 1012 are made of polypropylene material. The polypropylene material itself has high strength and wear resistance. The inner bag 101 woven by the polypropylene warp threads 1011 and the weft threads 1012 can withstand greater tension and pressure. The up-and-down staggered warp threads 1011 and the weft threads 1012 further enhance the structural strength of the inner bag 101, making it more durable. The tightly woven stable mesh structure helps to maintain the shape and stability of the inner bag 101. The outer bag 104 comprises a wear-resistant layer 1041, a corrosion-resistant layer 1042 and a waterproof layer 1043. The waterproof layer 1043 is fixedly arranged on the inner wall of the corrosion-resistant layer 1042. The wear-resistant layer 1041 is fixedly arranged on the outer wall of the corrosion-resistant layer 1042. The wear-resistant layer 1041 is located on the outermost layer of the outer bag 104 and directly faces the external environment for friction and abrasion, which can effectively protect the mail bag from physical damage. The corrosion-resistant layer 1042 is located between the wear-resistant layer 1041 and the waterproof layer 1043, which can isolate external corrosive substances and protect the mail bag from chemical corrosion. The waterproof layer 1043 is tightly attached to the inner wall of the corrosion-resistant layer 1042, which ensures that the mail bag is not penetrated and eroded by water, keeping the mail dry and safe. The wear-resistant layer 1041, the corrosion-resistant layer 1042 and the waterproof layer 1043 ensure that the mail bag can maintain good performance in harsh environments and is not easily damaged.
[0032] Please refer to Figure 1 , Figure 3 and Figure 4The upper end of the mail bag body 1 is fixedly connected with a binding 2, both sides of the outer wall of the binding 2 are fixedly provided with two rope holes 3 distributed in mirror image, a drawstring 4 is slidably connected inside the binding 2, the cooperation between the drawstring 4 and the rope hole 3 enables the mail bag to be conveniently opened and closed, the user only needs to pull the drawstring 4 to easily adjust the opening size of the mail bag, which is convenient for loading and taking out the articles, the drawstring 4 can tightly tighten the opening of the mail bag to prevent the articles from sliding or being lost during transportation, the elastic body 102 is made of thermoplastic rubber material, the plurality of reinforcing filaments 103 are made of nylon material, the thermoplastic rubber is a material with high elasticity and recovery, which can quickly recover to the original shape after being subjected to external force, thereby effectively absorbing and dispersing impact force to protect the inside of the mail bag from being damaged, nylon is a synthetic fiber material with high strength and high wear resistance, the reinforcing filaments 103 are made of nylon material, which can enhance the structural strength and wear resistance of the elastic body 102, the nylon filaments also have good tensile and tear resistance, so that the mail bag is not easy to break or deform when bearing heavy objects or external force, the wear-resistant layer 1041 is woven from high-wear-resistant polypropylene filaments, the high-wear-resistant polypropylene filaments are known for their excellent wear resistance, which can withstand greater friction and wear, thereby effectively prolonging the service life of the mail bag, the corrosion-resistant layer 1042 is made of polyester fiber, the polyester fiber has excellent corrosion resistance, which can effectively resist the corrosion of various chemicals, thereby protecting the inside of the mail bag from the threat of chemical corrosion, in a humid or corrosive environment, the polyester fiber corrosion-resistant layer 1042 can significantly prolong the service life of the mail bag, the waterproof layer 1043 is woven from waterproof polypropylene filaments, the waterproof polypropylene filaments are treated in a special way and have excellent waterproof performance, which can effectively block water penetration to ensure that the inside of the mail bag remains dry, thereby protecting the mail from damage caused by moisture and water, in rainy or humid environments, the waterproof layer 1043 woven from waterproof polypropylene filaments can significantly reduce the risk of the inside of the mail bag being damp.
[0033] In the embodiment, the durable polypropylene woven mail bag provides an additional cushioning and protection layer through the elastic body 102 fixedly provided on the outer wall of the inner bag 101, increases the overall strength and wear resistance of the mail bag, and the plurality of reinforcing filaments 103 fixedly provided inside the elastic body 102 further enhance the structural stability of the mail bag, so that it can bear greater weight and pressure, the use of the elastic body 102 enables the mail bag to maintain good elasticity when subjected to external force, and it is not easy to break during mailing due to external force, the composite design of the inner bag 101 and the outer bag 104 provides multi-level protection, the inner bag 101 can be used to directly load goods, and the outer bag 104 provides additional wear-resistant, corrosion-resistant or waterproof functions, the mail bag combines the multi-layer design of the inner bag 101, the elastic body 102, the reinforcing filaments 103 and the outer bag 104, and has the advantages of high strength, good elasticity and multi-layer protection.
[0034] The working principle of the above embodiment is:
[0035] The user first adjusts the size of the mail bag opening by pulling the drawstring 4 to facilitate loading of the items into the inner bag 101, which is made of polypropylene warp threads 1011 and weft threads 1012 that are interlaced in an over-under pattern to provide high strength and wear resistance, ensuring that the items are stably protected inside the mail bag. After loading is complete, the user pulls the drawstring 4 again to tightly tighten the mail bag opening and ties a knot to secure it. During the transportation of the mail bag, the elastomer 102 made of thermoplastic rubber provides an additional cushioning and protective layer, increasing the overall strength and wear resistance of the mail bag. The multiple reinforcing filaments 103 made of nylon material fixed inside the elastomer 102 further enhance the structural stability of the mail bag, enabling it to withstand greater weight and pressure. The outer bag 104 includes a wear-resistant layer 1041, a corrosion-resistant layer 1042, and a waterproof layer 1043, providing multiple layers of protection for the mail bag. The wear-resistant layer 1041 directly faces external friction and wear, effectively protecting the mail bag from physical damage. The corrosion-resistant layer 1042 is located between the wear-resistant layer 1041 and the waterproof layer 1043, isolating external corrosive substances and protecting the interior of the mail bag from chemical corrosion. The waterproof layer 1043 is tightly attached to the inner wall of the corrosion-resistant layer 1042, ensuring that the interior of the mail bag is not penetrated or eroded by water, maintaining the dryness and safety of the mail. During transportation, the mail bag ensures that it can withstand various friction, chemical corrosion, and water penetration.
[0036] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.
[0037] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A durable polypropylene woven mailer comprising a mailer body (1) characterised in that: The mail bag body (1) comprises an inner bag (101), the outer wall of the inner bag (101) is fixedly provided with an elastic body (102), the inside of the elastic body (102) is fixedly provided with a plurality of reinforcing wires (103), and the outer wall of the elastic body (102) is fixedly connected with an outer bag (104).
2. A durable polypropylene woven mailer according to claim 1, wherein: The inner bag (101) comprises a plurality of warp threads (1011) and weft threads (1012), the plurality of warp threads (1011) and weft threads (1012) are arranged in an up-and-down staggered weaving manner, and the plurality of warp threads (1011) and weft threads (1012) are all made of polypropylene material.
3. A durable polypropylene woven mailer according to claim 1, wherein: The outer bag (104) comprises a wear-resistant layer (1041), a corrosion-resistant layer (1042) and a waterproof layer (1043), the waterproof layer (1043) is fixedly arranged on the inner wall of the corrosion-resistant layer (1042), and the wear-resistant layer (1041) is fixedly arranged on the outer wall of the corrosion-resistant layer (1042).
4. A durable polypropylene woven mailer according to claim 1, wherein: The mail bag body (1) is fixedly connected with a binding edge (2) at the upper end, both sides of the outer wall of the binding edge (2) are fixedly provided with two rope holes (3) arranged in a mirror image, and the binding edge (2) is slidably connected with a rope (4) inside.
5. A durable polypropylene woven mailer according to claim 2, wherein: The elastic body (102) is made of thermoplastic rubber material, and the plurality of reinforcing wires (103) are all made of nylon material.
6. A durable polypropylene woven mailer according to claim 3, wherein: The wear-resistant layer (1041) is woven by high-wear-resistant polypropylene threads.
7. A durable polypropylene woven mailer according to claim 3, wherein: The corrosion-resistant layer (1042) is made of polyester fiber.
8. A durable polypropylene woven mailer according to claim 3, wherein: The waterproof layer (1043) is woven by waterproof polypropylene threads.