Anti-deformation non-woven fabric bag with reinforced bottom support

By reinforcing the base structure and using a multi-layer non-woven fabric design, the problems of deformation and unstable connection of non-woven bags when loaded with heavy objects are solved, improving the stability and protective performance of the bag and extending its service life.

CN224198278UActive Publication Date: 2026-05-05SUZHOU XIANGLI PACKAGING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU XIANGLI PACKAGING CO LTD
Filing Date
2025-05-19
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Existing non-woven bags with reinforced anti-deformation bases are prone to deformation when loaded with heavy objects, have unstable base connections, and poor protective performance, failing to effectively protect the contents.

Method used

The reinforced base structure adopts a rectangular tray, right-angle support frame and connecting clamp, and through the design of multiple non-woven fabric layers, including a protective layer, a reinforcing layer, a cushioning layer and a wear-resistant layer, combined with appropriate coatings, the support, connection stability and protection performance of the bag are improved.

Benefits of technology

It significantly improves the stability and protective performance of non-woven bags, prevents the bottom support from loosening or deforming, enhances the durability and safety of the bag body, and protects the contents from damage.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an anti-deformation non-woven fabric bag with a reinforced bottom support, which relates to the technical field of packaging products and comprises a non-woven fabric bag body, and the reinforced bottom support is arranged on the inner surface of the non-woven fabric bag body. The rectangular supporting plate can provide firm support for the bottom of the bag body, the pressure of heavy objects is evenly dispersed, and the bottom is prevented from deforming due to compression of the heavy objects; the right-angle supporting frames enhance the supporting force of the four corners of the bag body, collapse of the corners is avoided, the three-dimensional shape of the bag body is effectively maintained, when the non-woven fabric bag is lifted, the top of the bag body is subjected to upward pulling force, the sliding top plate can be pushed, the sliding top plate slides upwards in the connecting sliding groove, at the moment, the equilateral triangle rotating pressing plate moves upwards along with the sliding top plate, and therefore the non-woven fabric bag is lifted. The bottom support is clamped in the inverted-U-shaped clamping plate and rotates under the action of the inclined face of the inverted-triangle push plate, so that the top of the non-woven fabric bag clamped in the inverted-U-shaped clamping plate is clamped, firm reinforcement of the bottom support is achieved, the bottom support is effectively prevented from loosening and falling off in the using process, and it is guaranteed that objects are stably loaded.
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Description

Technical Field

[0001] This utility model relates to the field of packaging product technology, and in particular to a non-woven bag with a reinforced base to prevent deformation. Background Technology

[0002] Non-woven bags are bags made from non-woven fabric, a type of non-woven cloth. Non-woven fabric is a new type of fiber product formed directly from polymer chips, short fibers, or filaments through various web-forming methods and bonding technologies. It has a soft, breathable, and planar structure. Due to its lightweight, environmental friendliness, moisture resistance, flexibility, breathability, low price, and recyclability, it is widely used in shopping, advertising, storage, and other fields. In daily use and commercial activities, non-woven bags have gradually replaced some traditional plastic bags, becoming an environmentally friendly and practical packaging product.

[0003] The existing type of non-woven fabric bag with reinforced base to prevent deformation has the following shortcomings:

[0004] On the one hand, existing base structures are usually just a single flat plate or simple frame, lacking effective support for the corners of the bag and stable reinforcement of the overall structure. When loaded with heavy objects, the bottom of the bag is prone to deformation and collapse due to uneven stress. Moreover, during the lifting process, there is no reliable connection and reinforcement mechanism between the base and the bag, which can easily lead to the base falling off or loosening, resulting in unstable placement or even scattering of items. On the other hand, traditional non-woven bags are mostly single-layer or double-layer structures, and each layer of non-woven fabric is not specifically designed and reinforced for its function. When loaded with sharp objects, the bag is easily torn. In the face of liquid spills, vibrations, and collisions, it cannot provide good protection for the contents. Its wear resistance, moisture resistance, and cushioning performance are poor, which seriously affects the service life and safety of non-woven bags. Utility Model Content

[0005] This utility model proposes a non-woven bag with a reinforced bottom support to prevent deformation. Through an innovative reinforced bottom support structure and a multi-layer functional bag design, it effectively solves the problems of easy deformation at the bottom of the bag, unstable bottom support connection, and poor bag strength and protective performance, significantly improving the practicality and durability of the non-woven bag and addressing the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a non-woven bag with a reinforced bottom support for deformation prevention, comprising a non-woven bag body, wherein handles are fixedly connected to the upper front and rear sides of the outer surface of the non-woven bag body, and a reinforced bottom support is provided on the inner surface of the non-woven bag body. The reinforced bottom support includes a rectangular support plate, which is disposed at the bottom of the inner wall of the non-woven bag body. Right-angle support frames are fixedly connected to the four corners of the top of the rectangular support plate. The outer surface of the right-angle support frame is in contact with the four corners of the inner surface of the non-woven bag body, and a connecting clamp is fixedly connected to the top of the right-angle support frame.

[0007] Preferably, the nonwoven bag body includes a protective layer, a reinforcing layer is fixedly connected to the outside of the protective layer, a cushioning layer is fixedly connected to the outside of the reinforcing layer, and a wear-resistant layer is fixedly connected to the outside of the cushioning layer.

[0008] Preferably, the protective layer is made of polyester fiber nonwoven fabric with an antistatic coating on its inner surface; the reinforcing layer is made of high-strength polypropylene nonwoven fabric with a waterproof coating on both sides; the buffer layer is made of interwoven elastic polyurethane fibers with a shock-absorbing and damping coating on its surface; and the wear-resistant layer is made of aramid nonwoven fabric with an anti-fouling coating on its outer surface.

[0009] Preferably, the connecting clamp includes an inverted U-shaped clamp, which is fixedly connected to the top of the right-angle support frame, and the inner surface of the inverted U-shaped clamp is slidably connected to the top of the outer surface of the non-woven bag body.

[0010] Preferably, the inner wall of the inverted U-shaped card plate is provided with a connecting groove, and a sliding top plate is slidably connected to the top of the inner surface of the connecting groove. A tightening spring is fixedly connected to the top of the sliding top plate, and the top of the tightening spring is fixedly connected to the upper surface of the inner wall of the connecting groove.

[0011] Preferably, the bottom of the sliding top plate is rotatably connected to an equilateral triangular rotating pressure plate, and the inner wall of the connecting groove is fixedly connected to an inverted triangular push plate on the side near the equilateral triangular rotating pressure plate, with the inclined surface of the inverted triangular push plate fitting against the inclined surface of the equilateral triangular rotating pressure plate.

[0012] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0013] 1. In this utility model, a significant reinforcement effect is achieved through the cooperation between the rectangular support plate, the right-angle support frame, and the connecting clamp. The rectangular support plate provides solid support for the bottom of the bag, evenly distributes the pressure of heavy objects, and prevents the bottom from deforming due to the pressure of heavy objects. The right-angle support frame enhances the support force of the four corners of the bag, prevents the corners from collapsing, and effectively maintains the three-dimensional shape of the bag. When the non-woven bag is lifted, the top of the bag is subjected to an upward pulling force, which pushes the sliding top plate, causing the sliding top plate to slide upward in the connecting groove. At this time, the equilateral triangular rotating pressure plate moves upward with the sliding top plate and rotates under the action of the inclined surface of the inverted triangular push plate, thereby clamping the top of the non-woven bag stuck in the inverted U-shaped clamp, realizing a firm reinforcement of the bottom support, effectively preventing the bottom support from loosening or falling off during use, and ensuring that the items are loaded stably.

[0014] 2. In this utility model, the performance of the bag is greatly improved through the cooperation of the protective layer, reinforcing layer, buffer layer, wear-resistant layer and corresponding coating. The bag body is made of no less than four layers of non-woven fabric stacked and sewn together, combined with multiple functional coatings. The inner protective non-woven fabric layer is made of polyester fiber non-woven fabric with an anti-static coating, which can effectively prevent the internal items from generating static electricity due to friction, avoid dust adsorption, protect the loaded items and keep the bag clean. The middle reinforcing non-woven fabric layer is made of high-strength polypropylene non-woven fabric with a waterproof coating, which not only enhances the overall strength of the bag body, but also resists liquid penetration and achieves moisture protection. The buffer layer is made of elastic polyurethane fiber interwoven with a shock-absorbing damping coating, which can effectively buffer external impact and reduce the impact of vibration on the items. The outer wear-resistant layer is made of aramid non-woven fabric with an anti-fouling coating. With the high strength and wear resistance of aramid material, combined with the anti-fouling properties, the bag body is both resistant to friction and scratches and easy to clean and maintain. The division of labor among the layers significantly increases the strength, toughness and wear resistance of the bag body, and comprehensively improves the performance and service life of the non-woven bag. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the non-woven fabric bag with anti-deformation and reinforced bottom support of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the nonwoven bag body of this utility model;

[0017] Figure 3 This is a schematic diagram of the reinforced base of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the connecting clamp of this utility model.

[0019] Legend: 1. Non-woven bag body; 11. Protective layer; 12. Reinforcing layer; 13. Buffer layer; 14. Wear-resistant layer; 2. Handle; 3. Reinforced bottom support; 31. Rectangular support plate; 32. Right-angle support frame; 33. Connecting clamp; 331. Inverted U-shaped clamping plate; 332. Connecting slide; 333. Sliding top plate; 334. Tightening spring; 335. Right triangle rotating pressure plate; 336. Inverted triangle push plate. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figure 1 and Figure 2 As shown, this utility model provides a technical solution: including a non-woven bag body 1, with handles 2 fixedly connected to the upper front and rear sides of the outer surface of the non-woven bag body 1, characterized in that: a reinforced bottom support 3 is provided on the inner surface of the non-woven bag body 1, the non-woven bag body 1 includes a protective layer 11, a reinforcing layer 12 is fixedly connected to the outer side of the protective layer 11, a buffer layer 13 is fixedly connected to the outer side of the reinforcing layer 12, and a wear-resistant layer 14 is fixedly connected to the outer side of the buffer layer 13. The protective layer 11 is made of polyester fiber non-woven fabric, and its inner surface is coated with an antistatic coating. The reinforcing layer 12 is made of high-strength polypropylene non-woven fabric, and its two sides are coated with a waterproof coating. The buffer layer 13 is made of elastic polyurethane fiber interwoven, and its surface is coated with a shock-absorbing and damping coating. The wear-resistant layer 14 is made of aramid non-woven fabric, and its outer surface is coated with a stain-resistant coating.

[0023] The overall effect of Embodiment 1 is as follows: When using this non-woven bag to load items, the antistatic coating of the protective layer 11 can prevent the items inside the bag from generating static electricity due to friction, and avoid the items from attracting dust. It is especially suitable for loading items that are sensitive to static electricity, such as electronic components and precision instruments. The reinforcing layer 12, with the characteristics of high-strength polypropylene non-woven fabric, effectively improves the tensile and tear resistance of the bag body. The waterproof coating on both sides can prevent liquid intrusion. If liquid is accidentally spilled or used in a humid environment, it can protect the internal items from moisture. The elastic polyurethane fiber and shock-absorbing damping coating of the cushioning layer 13 work together to absorb and buffer the impact force when encountering vibration and collision during transportation. For example, when transporting fragile items, it can greatly reduce the risk of item breakage. The aramid non-woven fabric of the wear-resistant layer 14, combined with the anti-fouling coating, makes the surface of the bag body less likely to be scratched by sharp objects, and stains are difficult to adhere to. Even if stains are present, they can be easily wiped clean, effectively extending the service life of the non-woven bag and comprehensively ensuring the safety and integrity of the loaded items.

[0024] Example 2: Figure 3 and Figure 4 As shown, this utility model provides a technical solution: the reinforced base 3 includes a rectangular support plate 31, which is disposed at the bottom of the inner wall of the nonwoven bag body 1. Right-angle support frames 32 are fixedly connected to the four corners of the top of the rectangular support plate 31. The outer surface of the right-angle support frame 32 is in contact with the four corners of the inner surface of the nonwoven bag body 1. A connecting clamp 33 is fixedly connected to the top of the right-angle support frame 32. The connecting clamp 33 includes an inverted U-shaped clamp 331, which is fixedly connected to the top of the right-angle support frame 32. The inner surface of the inverted U-shaped clamp 331 slides against the top of the outer surface of the nonwoven bag body 1. The inner wall of the inverted U-shaped card plate 331 is provided with a connecting groove 332. A sliding top plate 333 is slidably connected to the top of the inner surface of the connecting groove 332. A clamping spring 334 is fixedly connected to the top of the sliding top plate 333. The top of the clamping spring 334 is fixedly connected to the upper surface of the inner wall of the connecting groove 332. A triangular rotating pressure plate 335 is rotatably connected to the bottom of the sliding top plate 333. An inverted triangular push plate 336 is fixedly connected to the inner wall of the connecting groove 332 near the side of the triangular rotating pressure plate 335. The inclined surface of the inverted triangular push plate 336 is in contact with the inclined surface of the triangular rotating pressure plate 335.

[0025] The overall effect of Embodiment 2 is as follows: After the items are placed in the non-woven bag, the rectangular support plate 31 lays flat on the bottom of the bag, providing a flat and sturdy support surface for the items, evenly distributing the weight of the items, and preventing the bottom of the bag from deforming; the right-angle support frame 32 fits tightly against the four corners of the bag, enhancing the support strength of the corners, maintaining the three-dimensional shape of the bag, and preventing the corners from collapsing; when the non-woven bag needs to be lifted, the handle 2 is subjected to force, and the top of the bag is subjected to an upward pull, which is transmitted to the sliding top plate 333 in the inverted U-shaped card plate 331, pushing the sliding top plate 333 in the connecting groove 332. As the sliding top plate 333 moves upward, it drives the connected equilateral triangular rotating pressure plate 335 to rise together. When the equilateral triangular rotating pressure plate 335 rises, it contacts the inclined surface of the inverted triangular push plate 336. Under the action of the inclined surface, the equilateral triangular rotating pressure plate 335 rotates. After rotation, the equilateral triangular rotating pressure plate 335 clamps the top of the non-woven bag stuck in the inverted U-shaped clamping plate 331, so that the reinforced bottom support 3 is firmly connected to the non-woven bag body 1. This ensures that even if heavy objects are loaded during the handling process, the bottom support will not loosen or fall off, thus ensuring the stability and safety of the goods transportation.

[0026] The working principle of the entire device is as follows: When preparing to use the anti-deformation reinforced bottom tray non-woven bag, first place the reinforced bottom tray 3 into the non-woven bag body 1, so that the rectangular tray 31 is placed flat at the bottom of the bag body, the right angle support frame 32 fits against the four corners of the bag body, and the inverted U-shaped card plate 331 clamps the top of the bag body. Then, put the items into the bag. At this time, the rectangular tray 31 bears the weight of the items and distributes the pressure evenly through its large contact area, avoiding excessive local stress on the bottom of the bag and deformation. The right angle support frame 32 provides vertical support for the four corners of the bag body, enhancing the overall three-dimensional structural stability of the bag body.

[0027] When the nonwoven bag is lifted by the carrying strap 2, the top of the bag is subjected to an upward pulling force. This pulling force acts on the sliding top plate 333 in the inverted U-shaped card plate 331, causing the sliding top plate 333 to overcome the elastic force of the top spring 334 and slide upward in the connecting groove 332. The sliding top plate 333 drives the equilateral triangular rotating pressure plate 335 to rise. When the equilateral triangular rotating pressure plate 335 contacts the inclined surface of the inverted triangular push plate 336, due to the guiding effect of the inclined surface, the equilateral triangular rotating pressure plate 335 rotates around the connection point with the sliding top plate 333. After rotation, the equilateral triangular rotating pressure plate 335 presses the top of the bag tightly against the inner wall of the inverted U-shaped card plate 331, realizing a tight connection between the reinforced bottom support 3 and the nonwoven bag body 1, preventing the bottom support from loosening or shifting during transportation.

[0028] During loading and handling, the multi-layered structure of the nonwoven bag body 1 works together to provide protection. The antistatic coating of the protective layer 11 prevents static electricity from being generated by friction of the internal items; the reinforcing layer 12, with its high-strength material and waterproof coating, enhances the bag's strength and prevents liquid intrusion; the elastic fibers and shock-absorbing damping coating of the cushioning layer 13 absorb external vibrations and impacts; and the aramid material and anti-fouling coating of the abrasion-resistant layer 14 protect the bag surface from wear and stains, thus comprehensively ensuring the safety of the loaded items and the durability of the nonwoven bag. After use, the reinforcing base 3 can be removed from the nonwoven bag body 1 for easy cleaning and storage.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A non-woven bag with a reinforced base and anti-deformation design, comprising a non-woven bag body (1), wherein handles (2) are fixedly connected to the upper sides of the front and rear sides of the outer surface of the non-woven bag body (1), characterized in that: The inner surface of the nonwoven bag body (1) is provided with a reinforced bottom support (3). The reinforced bottom support (3) includes a rectangular support plate (31). The rectangular support plate (31) is located at the bottom of the inner wall of the nonwoven bag body (1). The top four corners of the rectangular support plate (31) are fixedly connected with right-angle support frames (32). The outer surface of the right-angle support frame (32) is in contact with the four corners of the inner surface of the nonwoven bag body (1). The top of the right-angle support frame (32) is fixedly connected with a connecting clamp (33).

2. The non-woven bag with anti-deformation reinforced base as described in claim 1, characterized in that: The nonwoven bag body (1) includes a protective layer (11), a reinforcing layer (12) is fixedly connected to the outside of the protective layer (11), a buffer layer (13) is fixedly connected to the outside of the reinforcing layer (12), and a wear-resistant layer (14) is fixedly connected to the outside of the buffer layer (13).

3. The non-woven bag with anti-deformation reinforced base as described in claim 2, characterized in that: The protective layer (11) is made of polyester fiber nonwoven fabric, and its inner surface is coated with an antistatic coating. The reinforcing layer (12) is made of polypropylene high-strength nonwoven fabric, and both sides are coated with a waterproof coating. The buffer layer (13) is made of elastic polyurethane fiber interwoven, and its surface is coated with a shock-absorbing and damping coating. The wear-resistant layer (14) is made of aramid nonwoven fabric, and its outer surface is coated with an anti-fouling coating.

4. The non-woven bag with anti-deformation reinforced base as described in claim 1, characterized in that: The connecting clamp (33) includes an inverted U-shaped clamp (331), which is fixedly connected to the top of the right-angle support frame (32). The inner surface of the inverted U-shaped clamp (331) is slidably connected to the top of the outer surface of the non-woven bag body (1).

5. The non-woven bag with anti-deformation reinforced base as described in claim 4, characterized in that: The inner wall of the inverted U-shaped card plate (331) is provided with a connecting groove (332). A sliding top plate (333) is slidably connected to the top of the inner surface of the connecting groove (332). A tightening spring (334) is fixedly connected to the top of the sliding top plate (333). The top end of the tightening spring (334) is fixedly connected to the upper surface of the inner wall of the connecting groove (332).

6. The non-woven bag with anti-deformation reinforced base as described in claim 5, characterized in that: The bottom of the sliding top plate (333) is rotatably connected to an equilateral triangular rotating pressure plate (335), and the inner wall of the connecting groove (332) is fixedly connected to an inverted triangular push plate (336) on the side close to the equilateral triangular rotating pressure plate (335). The inclined surface of the inverted triangular push plate (336) is in contact with the inclined surface of the equilateral triangular rotating pressure plate (335).