Acid-resistant high-strength plastic bag
By combining a base layer, a barrier layer, and a high-strength nylon fiber mesh, along with a connecting strap and handle structure, the tensile strength of the plastic bag and the issue of items falling out were resolved, achieving the effects of acid resistance, high strength, and simplified production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI XUNENG PLASTIC PROD CO LTD
- Filing Date
- 2025-03-03
- Publication Date
- 2026-05-26
AI Technical Summary
Existing plastic bags have a simple structure, poor tensile strength, are easy to break, and items are prone to falling out during bumpy rides. The complex manufacturing process also limits their widespread use.
The bag features a structural design consisting of a base layer, a barrier layer, a high-strength nylon fiber mesh, and an encapsulation layer. Combined with a connecting strap and handle, it uses nano-silica particles to form a dense barrier layer, enhancing the mechanical strength and sealing of the plastic bag. The connecting strap also helps to prevent items from being jostled out.
It improves the overall rigidity and tear resistance of plastic bags, prevents items from being lost, simplifies the production process, and enhances the acid resistance and flexibility of plastic bags.
Smart Images
Figure CN224278162U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic bag technology, and in particular to an acid-resistant, high-strength plastic bag. Background Technology
[0002] As we all know, plastic bags are very common in our lives. People use plastic bags to hold things. However, the existing plastic bags have a very simple structure and are made entirely of soft plastic material. When such plastic bags are used to hold items, their tensile strength is poor, making them easy to break and damage.
[0003] A search revealed a Chinese patent (authorization announcement number CN212891690U) disclosing a high-strength PD plastic bag, comprising a plastic bag body, a base layer, a reinforcing layer fixedly connected to the surface of the base layer, a tear-resistant layer fixedly connected to the surface of the reinforcing layer, a flame-retardant layer fixedly connected to the surface of the tear-resistant layer, a waterproof layer fixedly connected to the surface of the flame-retardant layer, and a wear-resistant layer fixedly connected to the surface of the waterproof layer. The base layer is made of PD plastic, the tear-resistant layer is made of HDPE film, the reinforcing layer includes a polycarbonate layer, and a PE plastic film layer is fixedly connected to the surface of the polycarbonate layer. This patented technology, by setting up a base layer, a reinforcing layer, a tear-resistant layer, a flame-retardant layer, a waterproof layer, a wear-resistant layer, a polycarbonate layer, and a PE plastic film layer, solves the problem of low strength and inability to be reused in existing PD plastic bags.
[0004] However, the above-mentioned devices still have some drawbacks in actual use. The most obvious one is that the plastic bags are often open, and the items placed inside the plastic bags are easy to fall out due to bumps, resulting in the loss of items. In addition, the current plastic bags adopt a multi-layer composite structure, which presses together films of different materials to combine their respective advantages and achieve an overall performance improvement. Although this method performs well in some aspects, its complex production process limits its widespread application. Utility Model Content
[0005] In view of the above-mentioned problems existing in the prior art, the main objective of this utility model is to provide an acid-resistant, high-strength plastic bag.
[0006] The technical solution of this utility model is as follows: an acid-resistant high-strength plastic bag includes a plastic bag body, which includes a base material layer, a barrier layer, a high-strength nylon fiber mesh, and an encapsulating layer. The outer surface of the base material layer is coated with a barrier layer, and an encapsulating layer is disposed around the barrier layer. A high-strength nylon fiber mesh is woven between the barrier layer and the encapsulating layer. The high-strength nylon fiber mesh has a mesh structure. Connecting straps are provided at both ends of the top of the plastic bag body. One end of each connecting strap is sewn to the plastic bag body, and a female buckle is sewn to the other end of the connecting strap. A female buckle is sewn to the outer surface of the encapsulating layer to cooperate with the female buckle.
[0007] By adopting the above technical solution and using the connecting belt, the items that are shaken out during the use of the plastic bag can be blocked, thus preventing the items from being lost.
[0008] In a preferred embodiment, two handles are provided at the top of the plastic bag body and between the two connecting straps. Both ends of the handles are sewn with fixing surfaces, which are sewn to the outer surface of the plastic bag body.
[0009] By adopting the above technical solution and using a fixed surface, the handle can have a certain tensile strength and prevent the handle from falling off during use of the plastic bag.
[0010] In a preferred embodiment, a reinforcing ring is fastened to the outer side of each of the fixing surfaces, the handle passes through the interior of the reinforcing ring, and the reinforcing ring is sewn to the outer wall of the plastic bag body.
[0011] By adopting the above technical solution and using the reinforcing ring, the connection strength between the handle and the plastic bag body can be increased on the basis of the fixed surface, so that users can use the plastic bag body to carry more items.
[0012] In a preferred embodiment, the barrier layer is a dispersion of nano-silica particles, the average particle size of the barrier layer is about 50 nm, and the purity is ≥99.5%.
[0013] By adopting the above technical solution and using the dispersion of nano-silica particles, a dense barrier layer can be formed on its surface.
[0014] In a preferred embodiment, the high-strength nylon fiber web has a diameter of 0.1 mm and a density of 150 g / m², and the substrate layer is made of modified polyamide VI.
[0015] By adopting the above technical solution and using modified polyamide 6, the plastic bag body can be provided with basic chemical resistance and mechanical strength.
[0016] In a preferred embodiment, the outer side of each handle is covered with a soft cotton rod, and the encapsulation layer is a thermoplastic elastomer.
[0017] By adopting the above technical solution and using thermoplastic elastomers, the sealing and flexibility of the plastic bag body can be guaranteed.
[0018] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0019] 1. In this utility model, the use of a base material layer enables the plastic bag body to have a certain mechanical strength, and the weaving of a high-strength nylon fiber mesh on the outside of the barrier layer can enhance the overall rigidity and tear resistance of the entire plastic bag body. The use of the sealing layer can seal the internal layers to prevent moisture penetration and the intrusion of external substances. Furthermore, the use of the connecting strap can prevent items from being shaken out during the use of the plastic bag body, thus preventing items from being lost.
[0020] 2. In this invention, during the manufacturing process, the modified polyamide VI material is first melt-extruded into a sheet substrate, and then a nano-silica particle dispersion is sprayed onto its surface to form a uniformly distributed barrier layer. Next, a pre-prepared high-strength nylon fiber mesh is laid on the outside of the barrier layer to ensure its flatness and fit. Finally, a thermoplastic elastomer material is heated and melted and then covered on top of the high-strength nylon fiber mesh. After cooling and solidification, the finished plastic bag is obtained. Compared with the traditional multi-layer composite structure, this production method is more convenient. Attached Figure Description
[0021] Figure 1 This utility model provides an overall perspective view of an acid-resistant, high-strength plastic bag;
[0022] Figure 2 This utility model provides a schematic diagram of the internal structure of an acid-resistant, high-strength plastic bag;
[0023] Figure 3 A bottom view of an acid-resistant, high-strength plastic bag provided by this utility model;
[0024] Figure 4 This utility model provides an acid-resistant, high-strength plastic bag. Figure 3 Enlarged view of point A in the middle.
[0025] Illustration: 1. Plastic bag body; 2. Handle; 3. Soft cotton stick; 4. Connecting strap; 5. High-strength nylon fiber mesh; 6. Barrier layer; 7. Substrate layer; 8. Fixing surface; 9. Reinforcing ring; 10. Female buckle; 11. Sealing layer; 12. Female buckle. Detailed Implementation
[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0027] Reference Figure 1-4 A high-strength, acid-resistant plastic bag includes a plastic bag body 1. The plastic bag body 1 includes a base layer 7, a barrier layer 6, a high-strength nylon fiber mesh 5, and an encapsulating layer 11. The outer surface of the base layer 7 is coated with the barrier layer 6, and the encapsulating layer 11 is disposed around the barrier layer 6. A high-strength nylon fiber mesh 5 is woven between the barrier layer 6 and the encapsulating layer 11. The high-strength nylon fiber mesh 5 has a mesh structure. Connecting straps 4 are provided at both ends of the top of the plastic bag body 1. One end of each connecting strap 4 is sewn to the plastic bag body 1, and the other end of each connecting strap 4 is sewn with a female buckle 12. The encapsulating layer... The outer surface of the plastic bag 11 is sewn with a female buckle 10 that works with the female buckle 12. The use of the base material layer 7 enables the plastic bag body 1 to have a certain mechanical strength. A high-strength nylon fiber mesh 5 is woven on the outside of the barrier layer 6, which can enhance the overall rigidity and tear resistance of the entire plastic bag body 1. The use of the sealing layer 11 can be used to seal the internal layers to prevent moisture penetration and external substances from entering. The use of the connecting strap 4 can block the items that are shaken out during the use of the plastic bag body 1 to prevent the items from being lost.
[0028] Specifically, two handles 2 are provided at the top of the plastic bag body 1 and between the two connecting straps 4. Both ends of the handles 2 are sewn with fixing surfaces 8. The use of fixing surfaces 8 enables the handles 2 to have a certain tensile strength and prevents the handles 2 from falling off during use. The fixing surfaces 8 are sewn to the outer surface of the plastic bag body 1. A reinforcing ring 9 is fastened to the outside of the fixing surfaces 8. The handles 2 pass through the inside of the reinforcing ring 9. The use of reinforcing ring 9 can increase the connection strength between the handles 2 and the plastic bag body 1 on the basis of the fixing surfaces 8, so that the plastic bag body 1 can be used by users to carry more items. The reinforcing ring 9 is sewn to the outer wall of the plastic bag body 1.
[0029] Specifically, the barrier layer 6 is a dispersion of nano-silica particles. By using the nano-silica particle dispersion, a dense barrier layer 6 can be formed on its surface, further improving the acid resistance of the plastic bag body 1. The average particle size of the barrier layer 6 is about 50nm, and the purity is ≥99.5%. The high-strength nylon fiber mesh 5 has a diameter of 0.1mm and a density of 150g / m². The substrate layer 7 is made of modified polyamide 6. Modified polyamide 6 can provide the basic chemical resistance and mechanical strength of the plastic bag body 1. The handles 2 are all covered with soft cotton rods 3. The encapsulation layer 11 is a thermoplastic elastomer. By using thermoplastic elastomer, the sealing and flexibility of the plastic bag body 1 can be guaranteed.
[0030] Working principle: In the manufacturing process, the modified polyamide 6 material is first melt-extruded into a sheet substrate, and then a nano-silica particle dispersion is sprayed on its surface to form a uniformly distributed barrier layer 6. Next, a pre-prepared high-strength nylon fiber mesh 5 is laid on the outside of the barrier layer 6 to ensure that it is flat and adhered. Finally, a thermoplastic elastomer material is heated and melted and covered on the high-strength nylon fiber mesh 5. After cooling and solidification, the finished plastic bag is obtained. Compared with the traditional multi-layer composite structure, this production method is more convenient.
[0031] During use, the modified polyamide six substrate provides basic chemical resistance and mechanical strength, the barrier layer 6 formed by nano-silica particles effectively blocks the penetration of acidic substances, the high-strength nylon fiber mesh 5 enhances the rigidity and tear resistance of the plastic bag body 1, the thermoplastic elastomer encapsulation layer 11 ensures the sealing and flexibility of the plastic bag body 1, and the use of the connecting strap 4 can prevent items from being shaken out during the use of the plastic bag body 1 to prevent items from being lost, and the use of the male buckle 10 and female buckle 12 allows personnel to use the connecting strap 4.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0033] The above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An acid-resistant, high-strength plastic bag, comprising a plastic bag body (1), characterized in that: The plastic bag body (1) includes a base layer (7), a barrier layer (6), a high-strength nylon fiber mesh (5), and a sealing layer (11). The outer surface of the base layer (7) is coated with a barrier layer (6). A sealing layer (11) is provided around the barrier layer (6). A high-strength nylon fiber mesh (5) is woven between the barrier layer (6) and the sealing layer (11). The high-strength nylon fiber mesh (5) has a mesh structure. Both ends of the top of the plastic bag body (1) are provided with connecting straps (4). One end of the connecting straps (4) is sewn to the plastic bag body (1). The other end of the connecting straps (4) is sewn with a female buckle (12). The outer surface of the sealing layer (11) is sewn with a female buckle (10) that works with the female buckle (12).
2. The acid-resistant high-strength plastic bag according to claim 1, characterized in that: Two handles (2) are provided on the top of the plastic bag body (1) and between the two connecting straps (4). Both ends of the handles (2) are sewn with fixing surfaces (8), and the fixing surfaces (8) are sewn to the outer surface of the plastic bag body (1).
3. The acid-resistant high-strength plastic bag according to claim 2, characterized in that: The outer side of each fixing surface (8) is fastened with a reinforcing ring (9), the handle (2) passes through the interior of the reinforcing ring (9), and the reinforcing ring (9) is sewn to the outer wall of the plastic bag body (1).
4. The acid-resistant high-strength plastic bag according to claim 1, characterized in that: The high-strength nylon fiber mesh (5) has a diameter of 0.1 mm and a density of 150 g / m², and the substrate layer (7) is made of modified polyamide 6.
5. The acid-resistant high-strength plastic bag according to claim 2, characterized in that: The handle (2) is covered with a soft cotton rod (3) on the outside, and the encapsulation layer (11) is a thermoplastic elastomer.