Corner wear-resistant PE bag

Abstract

The utility model relates to a related technical field of PE bag especially relates to a corner wear -resisting type PE bag, including PE bag body, the PE bag body is composed successively by LDPE mixed elastomer layer, intermediate layer and outer layer, the bottom four corners of PE bag body all are equipped with hard plastic angle guard, the utility model discloses through hard plastic angle guard, has strengthened the wear resistance of PE bag body bottom, the fibre reinforced strip of nylon grid layer in intermediate layer is set in the vicinity of the corner, has improved the anti -puncture and wear resistance of corner, the miniature 'rivet' structure of the resin penetration formation of node department of nylon grid layer, and the design of the thickness of the area of five to fifteen millimeter from the corner increases thirty to fifty percent, has strengthened the overall strength and stability of this area, the combination of nanometer silicon dioxide composite layer and HDPE layer in outer layer has strengthened the strength and wear resistance of HDPE layer, and UV solidification epoxy resin coating and polyurethane wear -resistant coating have built the protective barrier in common, have prolonged the service life of PE bag.

Description

Technical Field

[0001] This utility model relates to the technical field of PE bags, and in particular to a PE bag with wear-resistant edges and corners. Background Technology

[0002] PE bags have excellent low-temperature resistance and good chemical stability, but they are prone to wear and tear when loaded with items. Therefore, there is a special need for a PE bag with wear-resistant edges and corners.

[0003] A PE film bag with authorization announcement number CN222555539U includes: a bag body; two handles, respectively disposed opposite to each other on both sides of the bag body and extending into the bag body; two handles, respectively disposed on the side walls of the bag body, a portion of the middle part of each handle extending to the opening between the handles, and another portion connected to the bag body above the handles, with both ends of each handle connected to the bag body on both sides of the handles; wherein, the handles are connected to the bag body by adhesive; the beneficial effect of this utility model is: preventing damage to the handles of the bag body;

[0004] However, in actual use, the edges and corners of the bag are the most susceptible to friction. The aforementioned PE film bag only protects the opening and lacks protection for the edges and corners.

[0005] To address the aforementioned issues, a wear-resistant PE bag with durable edges and corners is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a corner-wear resistant PE bag to solve the problem of the existing corner-wear resistant PE bags mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a corner-wear-resistant PE bag, comprising a PE bag body, wherein the PE bag body is composed of an LDPE mixed elastomer layer, an intermediate layer and an outer layer in sequence, and the LDPE mixed elastomer layer is the innermost layer, which directly contacts the packaged item; and the bottom four corners of the PE bag body are provided with hard plastic corner protectors.

[0008] The intermediate layer includes a nylon mesh layer disposed on one side of the LDPE mixed elastomer layer, an EVA foam layer disposed in the middle of the inner wall of the nylon mesh layer, and fiber reinforcing strips disposed near the corners of the PE bag body.

[0009] Preferably, the nodes of the nylon mesh layer are encapsulated and permeated with resin to form a micro "rivet" structure, and the distance from the corner is five to fifteen millimeters, increasing the thickness of the area by thirty to fifty percent.

[0010] Preferably, the fiber-reinforced strips are arranged along the ridge line of the corner of the PE bag body and are bonded to the nylon mesh layer by an adhesive.

[0011] Preferably, the nylon mesh layer is three millimeters away from the outer edge of the corner to prevent stress concentration from breaking through.

[0012] Preferably, the outer layer includes an HDPE layer bonded to the side of the nylon mesh layer away from the LDPE mixed elastomer layer, a nano-silica composite layer bonded to the side of the HDPE layer away from the nylon mesh layer, a UV-curable epoxy resin coating coated to the side of the nano-silica composite layer away from the HDPE layer, and a polyurethane wear-resistant coating coated to the side of the UV-curable epoxy resin coating away from the UV-curable epoxy resin coating.

[0013] Preferably, the HDPE layer provides a basic support structure for the bag, giving it a certain tensile and tear resistance, and the nano-silica composite layer is combined with the HDPE layer to enhance the strength of the HDPE layer.

[0014] Preferably, the UV-cured epoxy resin coating extends two millimeters to the outer edge of the corner of the PE bag body, forming an edge protection.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This corner-wear-resistant PE bag enhances the wear resistance of the bottom of the PE bag body by setting hard plastic corner protectors at the four bottom corners of the PE bag body;

[0017] 2. The fiber reinforcement strips set near the corners of the nylon mesh layer in the middle layer are arranged along the edge line and firmly bonded to the nylon mesh layer. They can withstand and disperse the external force on the corners, improving the corners' puncture resistance and abrasion resistance. In addition, the micro "rivet" structure formed by resin encapsulation at the nodes of the nylon mesh layer, and the design of increasing the thickness by 30% to 50% in the area 5 to 15 mm from the corners, enhance the overall strength and stability of this area. Together with the fiber reinforcement strips, they create a stable protective area for the corners.

[0018] 3. The outer layer combines a nano-silica composite layer with the HDPE layer, enhancing the strength and wear resistance of the HDPE layer. The UV-cured epoxy resin coating and the polyurethane wear-resistant coating together form a protective barrier, making it easy to resist scratches from external objects and extending the service life of the PE bag. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure between the LDPE hybrid elastomer layer, the intermediate layer, and the outer layer of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the intermediate layer of this utility model;

[0022] Figure 4 This is a schematic diagram of the outer layer of this utility model.

[0023] In the diagram: 1. PE bag body; 2. LDPE mixed elastomer layer; 3. Middle layer; 301. Nylon mesh layer; 302. EVA foam layer; 303. Fiber reinforced strip; 4. Outer layer; 401. HDPE layer; 402. Nano silica composite layer; 403. UV-cured epoxy resin coating; 404. Polyurethane wear-resistant coating; 5. Rigid plastic corner protectors. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Example

[0026] like Figure 1-3 As shown, the PE bag body 1 is composed of an LDPE mixed elastomer layer 2, an intermediate layer 3, and an outer layer 4. The LDPE mixed elastomer layer 2 is the innermost layer and directly contacts the packaged item. The bottom four corners of the PE bag body 1 are provided with rigid plastic corner protectors 5. The intermediate layer 3 includes a nylon mesh layer 301 provided on one side of the LDPE mixed elastomer layer 2. An EVA foam layer 302 is provided in the middle of the inner wall of the nylon mesh layer 301. Fiber reinforcing strips 303 are provided near the corners of the nylon mesh layer 301.

[0027] It should be noted that, in this embodiment, when loading items, the innermost LDPE blended elastomer layer 2, due to its direct contact with the packaged goods, provides a soft and conforming contact environment for the packaged goods due to the good flexibility and elasticity of the LDPE blended elastomer. This not only reduces damage caused by shaking and collision of the packaged goods inside the bag, but also buffers minor impacts from the outside to a certain extent, ensuring the safety of the packaged goods. The nylon mesh layer 301 in the middle layer 3 begins to provide preliminary structural support. The presence of the nylon mesh layer 301 increases the strength and stability of the entire middle layer 3. The micro-"rivet" structure formed by resin encapsulation and penetration at its nodes further enhances the mesh's firmness. When the bag is subjected to a certain external force, the nylon mesh disperses stress, preventing damage caused by local stress concentration. At the same time, the nylon mesh layer 301... The design of three millimeters from the outer edge of the corner creates a stress buffer zone at the corner, preventing stress concentration at the corner and potential damage. Fiber-reinforced strips 303, positioned near the corner of the PE bag body 1, are arranged along the edge direction and bonded to the nylon mesh layer 301 with adhesive. When the corner of the bag is impacted, the fiber-reinforced strips 303 play a crucial role. Their high strength allows them to withstand significant external forces, preventing rapid wear at the corners. Simultaneously, they effectively disperse impact force when struck by sharp objects, preventing punctures. The EVA foam layer 302 in the middle of the inner wall of the nylon mesh layer 301 provides excellent cushioning performance. When the corner is impacted, the EVA foam layer 302 absorbs some of the impact energy, further reducing the impact on the overall bag structure.

[0028] Furthermore, the nylon mesh layer 301 increases its thickness by 30% to 50% in the area 5 to 15 millimeters from the corners, enhancing the strength of this area. Together with the fiber-reinforced strips 303 and the EVA foam layer 302, it comprehensively improves the protection capability of the corners.

[0029] like Figure 4 As shown, the outer layer 4 includes an HDPE layer 401 bonded to the side of the nylon mesh layer 301 away from the LDPE mixed elastomer layer 2, a nano-silica composite layer 402 bonded to the side of the HDPE layer 401 away from the nylon mesh layer 301, a UV-cured epoxy resin coating 403 coated on the side of the nano-silica composite layer 402 away from the HDPE layer 401, and a polyurethane wear-resistant coating 404 coated on the side of the UV-cured epoxy resin coating 403 away from the UV-cured epoxy resin coating 403.

[0030] It should be noted that, in this embodiment, the HDPE layer 401 in the outer layer 4 provides a basic support structure for the bag. The nano-silica composite layer 402 is combined with the HDPE layer 401, and the nano-silica particles are uniformly dispersed in the HDPE matrix, which enhances and toughens the bag, further improving the strength and wear resistance of the outer layer 4. The UV-cured epoxy resin coating 403 has high hardness and adhesion, making it easy to adhere to the surface of the nano-silica composite layer 402, forming a barrier to resist scratches from external objects and corrosion from chemicals. The grease coating 403 extends two millimeters to the outer edge of the corner of the PE bag body 1, forming an edge protection, which further enhances the protection of the corner area. The polyurethane wear-resistant coating 404 is located on the outermost side. When the bag rubs frequently with external objects, the polyurethane wear-resistant coating 404 absorbs friction energy through its own elastic deformation, reduces wear, and ensures the integrity of the outer layer 4 of the bag. The rigid plastic corner protectors 5 are made of high-strength engineering plastic, which has high strength and rigidity. The rigid plastic corner protectors 5 can replace the corners of the bag and rub against the bottom contact surface, reducing the wear of the bottom corners of the PE bag body 1.

[0031] Working principle of this utility model:

[0032] Refer to the instruction manual appendix Figure 1-4 When loading goods, the innermost LDPE blended elastomer layer 2, because it is in direct contact with the packaged goods, provides a soft and close-fitting contact environment for the packaged goods due to the good flexibility and elasticity of the LDPE blended elastomer. This not only reduces the damage caused by the shaking and collision of the packaged goods inside the bag, but also cushions the minor impact from the outside to a certain extent, ensuring the safety of the packaged goods.

[0033] The nylon mesh layer 301 in the intermediate layer 3 initially provides structural support. The presence of the nylon mesh layer 301 increases the strength and stability of the entire intermediate layer 3. The micro-"rivet" structures formed by resin encapsulation at its nodes further enhance the mesh's strength. When the bag is subjected to external force, the nylon mesh disperses stress, preventing damage caused by localized stress concentration. Simultaneously, the design of the nylon mesh layer 301 three millimeters from the outer edge of the corners creates a stress buffer zone at the corners, preventing stress concentration at the corners and potential breakage. The fiber reinforcement strips 303, located near the corners of the PE bag body 1, extend along... The edges and corners are arranged in the direction of the edges and corners and bonded to the nylon mesh layer 301 with adhesive. When the edges and corners of the bag are impacted by external force, the fiber reinforcement strips 303 play a key role. The fiber reinforcement strips 303 have high strength and can withstand greater external force, preventing the edges and corners from wearing out quickly. At the same time, when hit by sharp objects, they can disperse the impact force and prevent the edges and corners from being punctured. The EVA foam layer 302 in the middle of the inner wall of the nylon mesh layer 301 has good cushioning performance. When the edges and corners are impacted, the EVA foam layer 302 can absorb part of the impact energy, further reducing the impact on the overall structure of the bag.

[0034] The HDPE layer 401 in the outer layer 4 provides the basic support structure for the bag. The nano-silica composite layer 402 is combined with the HDPE layer 401. The nano-silica particles are uniformly dispersed in the HDPE matrix, which enhances and toughens the bag, further improving the strength and wear resistance of the outer layer 4. The UV-cured epoxy resin coating 403 has high hardness and adhesion, making it easy to adhere to the surface of the nano-silica composite layer 402, forming a barrier to resist scratches from external objects and corrosion from chemicals. The UV-cured epoxy resin coating 403 extends... Extending two millimeters to the outer edge of the corner of the PE bag body 1, it forms an edge protection, further enhancing the protection of the corner area. The polyurethane wear-resistant coating 404 is located on the outermost side. When the bag rubs frequently with external objects, the polyurethane wear-resistant coating 404 absorbs frictional energy through its own elastic deformation, reducing wear and ensuring the integrity of the outer layer 4 of the bag. The rigid plastic corner protectors 5 are made of high-strength engineering plastic, which has high strength and rigidity. The rigid plastic corner protectors 5 can replace the corners of the bag and rub against the bottom contact surface, reducing the wear of the bottom corners of the PE bag body 1.

[0035] 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 wear-resistant PE bag with sharp edges and corners, comprising a PE bag body (1), characterized in that: The PE bag body (1) is composed of an LDPE mixed elastomer layer (2), an intermediate layer (3) and an outer layer (4) in sequence, and the LDPE mixed elastomer layer (2) is the innermost layer, which directly contacts the packaged item. The bottom four corners of the PE bag body (1) are provided with hard plastic corner protectors (5). The intermediate layer (3) includes a nylon mesh layer (301) disposed on one side of the LDPE mixed elastomer layer (2), an EVA foam layer (302) disposed in the middle of the inner wall of the nylon mesh layer (301), and fiber reinforcing strips (303) disposed near the corner of the PE bag body (1).

2. The edge-wear-resistant PE bag according to claim 1, characterized in that: The nodes of the nylon mesh layer (301) are encapsulated and permeated with resin to form a micro "rivet" structure, and the thickness of the area increases by 30% to 50% from the corners by 5 to 15 millimeters.

3. The edge-wear-resistant PE bag according to claim 1, characterized in that: The fiber-reinforced strip (303) is arranged along the ridge line of the corner of the PE bag body (1) and is bonded to the nylon mesh layer (301) by an adhesive.

4. The edge-wear-resistant PE bag according to claim 1, characterized in that: The nylon mesh layer (301) is located three millimeters from the outer edge of the corner to prevent stress concentration from breaking through.

5. A corner-wear-resistant PE bag according to claim 1, characterized in that: The outer layer (4) includes an HDPE layer (401) bonded to the side of the nylon mesh layer (301) away from the LDPE mixed elastomer layer (2), a nano silica composite layer (402) bonded to the side of the HDPE layer (401) away from the nylon mesh layer (301), a UV-curable epoxy resin coating (403) coated on the side of the nano silica composite layer (402) away from the HDPE layer (401), and a polyurethane wear-resistant coating (404) coated on the side of the UV-curable epoxy resin coating (403) away from the UV-curable epoxy resin coating (403).

6. A wear-resistant PE bag with edge and corner protection according to claim 5, characterized in that: The HDPE layer (401) provides a basic support structure for the bag, giving it a certain tensile and tear resistance. The nano-silica composite layer (402) is combined with the HDPE layer (401) to enhance the strength of the HDPE layer (401).

7. A wear-resistant PE bag with edge and corner protection according to claim 5, characterized in that: The UV-cured epoxy resin coating (403) extends two millimeters to the outer edge of the corner of the PE bag body (1) to form edge protection.

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