Kraft paper composite bubble film

Abstract

The utility model discloses a kraft paper composite bubble film relates to bubble film technical field, including kraft paper body and a plurality of bubble film body, a plurality of bubble film body is connected through the sealed connecting band, bubble film body and sealed connecting band are integrally formed, and bubble film body and sealed connecting band are bonded through the double component polyurethane adhesive layer between kraft paper body, a plurality of bubble film body all include high density polyethylene layer, linear low density polyethylene layer and honeycomb plastic grid layer, and high density polyethylene layer, honeycomb plastic grid layer and linear low density polyethylene layer are sequentially arranged, the utility model discloses high density polyethylene layer, linear low density polyethylene layer and honeycomb plastic grid layer three layer structure can work together, and high density polyethylene layer provides rigid support, and linear low density polyethylene layer buffering deformation, and the grid layer of honeycomb structure evenly disperses pressure, provides effective protection for packing article.

Description

Technical Field

[0001] This utility model relates to the field of bubble wrap technology, specifically a kraft paper composite bubble wrap. Background Technology

[0002] With the rapid development of modern logistics and e-commerce, the demand for packaging materials is increasing daily, and the performance requirements for these materials are also becoming more stringent. Kraft paper composite bubble wrap, with its excellent comprehensive performance, can meet the market's needs for packaging materials in terms of product protection, reducing transportation losses, enhancing packaging aesthetics, and environmental protection.

[0003] Referring to the existing Chinese patent with publication number CN218369467U, a kraft paper composite bubble wrap is disclosed. It includes a first sealing film and a second sealing film. The outer wall of the second sealing film is provided with an adhesive film, and the inner walls of both the first and second sealing films are provided with inner lining films. Multiple anti-collision bubbles are fixed to the outer walls of the first and second sealing films. Multiple air tubes are internally sealed and connected to the multiple anti-collision bubbles. A locking component is installed on the outside of one of the air tubes, and the locking component includes a sleeve fitted onto the outer wall of the air tube.

[0004] The aforementioned kraft paper composite bubble wrap is designed with a locking component in this device. A sliding limiting roller moves into the limiting groove within the slide, allowing it to compress the air tube inside the sleeve. The user then performs a heat-sealing process on the air tube, after which the limiting roller separates from the limiting groove. A spring controls the limiting roller to return to its original position, and finally, the sleeve is removed. This design facilitates rapid inflation of the bubble wrap. However, this type of kraft paper composite bubble wrap still has some drawbacks, such as: the bubble wrap surface is relatively fragile and easily scratched or abraded by sharp objects, causing it to lose its shock-absorbing and cushioning effects during transportation or storage, thus affecting the protective performance of the packaged items. Utility Model Content

[0005] The purpose of this invention is to provide a kraft paper composite bubble wrap to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A kraft paper composite bubble wrap, comprising:

[0008] Kraft paper body and several bubble wrap bodies, the bubble wrap bodies are connected by a sealing strip, the bubble wrap bodies and the sealing strip are integrally formed, and the bubble wrap bodies and the sealing strip are bonded to the kraft paper body by a two-component polyurethane adhesive layer.

[0009] Each of the bubble film bodies comprises a high-density polyethylene layer, a linear low-density polyethylene layer, and a honeycomb plastic mesh layer, wherein the high-density polyethylene layer, the honeycomb plastic mesh layer, and the linear low-density polyethylene layer are arranged sequentially.

[0010] Preferably, the high-density polyethylene layer has a thickness of 0.08 mm, and the linear low-density polyethylene layer has a thickness of 0.10 mm.

[0011] Preferably, an antistatic agent layer is provided on the surface of several of the bubble film bodies, and a nano-clay composite coating is provided on the side of the antistatic agent layer facing away from the bubble film body.

[0012] Preferably, a first polypropylene layer and a second polypropylene layer are respectively provided on both sides of the kraft paper body, and the first polypropylene layer is bonded to a two-component polyurethane adhesive layer.

[0013] Preferably, the kraft paper body has an aluminum foil layer on a portion away from the first polypropylene layer, and the aluminum foil layer has an ethylene-vinyl acetate copolymer coating on the side away from the kraft paper body. The ethylene-vinyl acetate copolymer coating is connected to the second polypropylene layer away from the aluminum foil layer.

[0014] Preferably, the kraft paper body has a writing area, which is a water-based acrylic coating area.

[0015] Preferably, the kraft paper body has an adhesive area, which is a nano-siloxane alkyl hydrophobic and oleophobic coating area.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The high-density polyethylene layer of this invention has high strength and rigidity, can withstand greater pressure and tension, and is not easily broken. The linear low-density polyethylene layer has good flexibility and puncture resistance. When the item is subjected to external force, it can buffer the impact force through its own deformation. The honeycomb plastic mesh layer is a unique structural design. The honeycomb mesh can produce uniform deformation when subjected to pressure, absorbing and dispersing the impact force. When the bubble wrap is subjected to external force, the three-layer structure can work together to absorb and disperse energy, thereby providing more comprehensive and effective protection for the packaged items. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a kraft paper composite bubble film in an embodiment of this application;

[0019] Figure 2 This is a cross-sectional view of a kraft paper composite bubble wrap embodiment of this application.

[0020] Figure 3This is one of the cross-sectional structural diagrams of the bubble film body of a kraft paper composite bubble film in the embodiments of this application;

[0021] Figure 4 This is a second schematic cross-sectional view of the bubble wrap body of a kraft paper composite bubble wrap according to an embodiment of this application.

[0022] Figure 5 This is a schematic diagram of the back structure of the kraft paper body of a kraft paper composite bubble wrap according to an embodiment of this application.

[0023] In the diagram: 1. Kraft paper body; 2. Bubble wrap body; 3. Two-component polyurethane adhesive layer; 4. High-density polyethylene layer; 5. Linear low-density polyethylene layer; 6. Honeycomb plastic mesh layer; 7. Nano-clay composite coating; 8. Antistatic agent layer; 9. First polypropylene layer; 10. Second polypropylene layer; 11. Aluminum foil layer; 12. Ethylene-vinyl acetate copolymer coating; 13. Writing area; 14. Pasting area; 15. Sealing strip. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-5 This utility model provides a technical solution:

[0026] A kraft paper composite bubble wrap, comprising:

[0027] Kraft paper body 1 and several bubble wrap bodies 2 are connected by a sealing connecting strip 15. The bubble wrap bodies 2 and the sealing connecting strip 15 are integrally formed, and the bubble wrap bodies 2 and the sealing connecting strip 15 are bonded to the kraft paper body 1 by a two-component polyurethane adhesive layer 3.

[0028] The kraft paper body 1 has a first polypropylene layer 9 and a second polypropylene layer 10 on both sides. The first polypropylene layer 9 is bonded to a two-component polyurethane adhesive layer 3. An aluminum foil layer 11 is provided on the kraft paper body 1 away from the first polypropylene layer 9. An ethylene-vinyl acetate copolymer coating 12 is provided on the side of the aluminum foil layer 11 away from the kraft paper body 1. The ethylene-vinyl acetate copolymer coating 12 is connected to the second polypropylene layer 10 away from the aluminum foil layer 11. The kraft paper has a basis weight of 120-150 g / m². 2 .

[0029] The two-component polyurethane adhesive layer 3 has high bonding strength, firmly bonding the bubble wrap body 2, the sealing strip 15 and the kraft paper body 1, making the composite structure stable; at the same time, the two-component polyurethane adhesive layer 3 has good flexibility and durability, adapting to bending, squeezing and other situations during the packaging process, and is not easy to delaminate.

[0030] The first polypropylene layer 9 is tightly bonded to the adhesive layer, increasing the stability of the connection with the bubble wrap; the second polypropylene layer 10 works in conjunction with the ethylene-vinyl acetate copolymer coating 12 to protect the aluminum foil layer 11 from damage, and the polypropylene layer itself has high strength and good moisture resistance, improving the overall strength and moisture resistance of the packaging material. The thickness of both the first polypropylene layer 9 and the second polypropylene layer 10 is 20μm.

[0031] The aluminum foil layer 11 is double-sided coated with polyurethane, with a thickness of 9-12μm. The aluminum foil layer 11 has excellent barrier properties, effectively blocking moisture, oxygen, and light, protecting the contents from moisture, oxidation, and light exposure, extending the product's shelf life, and is suitable for packaging items with high requirements for storage environment.

[0032] The ethylene-vinyl acetate copolymer coating 12 has good flexibility and adhesion, which can buffer external impact, protect the aluminum foil layer 11, enhance the adhesion with the second polypropylene layer 10, ensure the stability of the multilayer structure, and also has a certain degree of chemical resistance, improving the environmental adaptability of the packaging material. The ethylene-vinyl acetate copolymer coating 12 and the second polypropylene layer 10 are compounded by co-extrusion or hot melt adhesive.

[0033] Based on the above embodiments, the kraft paper body 1 is provided with a writing area 13, which is a water-based acrylic coating area, and the kraft paper body 1 is provided with an adhesive area 14, which is a nano-siloxane alkyl hydrophobic and oleophobic coating area.

[0034] The water-based acrylic coating has excellent writing properties, allowing various writing instruments to be used by users to easily mark item information, mailing and receiving addresses, and other information on the packaging. The nano-siloxane alkyl hydrophobic and oleophobic coating reduces the surface energy of the adhesive area 14, providing excellent hydrophobic and oleophobic properties. When labels, tapes, or other items need to be pasted on the adhesive area 14, the low surface energy of the coating allows the adhesive to exert its adhesion better, resulting in a stronger bond and no glue residue, ensuring a clean appearance of the packaging.

[0035] Each of the bubble wrap bodies 2 includes a high-density polyethylene layer 4, a linear low-density polyethylene layer 5, and a honeycomb plastic mesh layer 6, and the high-density polyethylene layer 4, the honeycomb plastic mesh layer 6, and the linear low-density polyethylene layer 5 are arranged sequentially. The thickness of the high-density polyethylene layer 4 is 0.08 mm, and the thickness of the linear low-density polyethylene layer 5 is 0.10 mm.

[0036] A 0.02mm layer of maleic anhydride-grafted polyethylene is provided between the high-density polyethylene layer 4 and the honeycomb plastic mesh layer 6. The maleic anhydride-grafted polyethylene can act as a compatibilizer to improve the interlayer peel strength. The honeycomb plastic mesh layer 6 is a PET mesh layer with a thickness controlled at 0.04-0.06mm, a mesh aperture of 2-3mm, and a pore wall thickness of 0.1-0.2mm.

[0037] The high-density polyethylene layer 4, with a thickness of 0.08mm, possesses high strength and rigidity, providing a basic support structure for the bubble wrap. It can withstand significant pressure and tension without easily breaking. The linear low-density polyethylene layer 5, with a thickness of 0.10mm, exhibits good flexibility and elasticity. It can undergo elastic deformation along with the bubble wrap and can cushion impact forces when the item is subjected to external forces. The honeycomb plastic mesh layer 6 is a unique structural design. The honeycomb mesh can produce uniform deformation under pressure, absorbing and dispersing impact forces. When the bubble wrap is subjected to external forces, the three layers work together to absorb and disperse energy, thus providing more comprehensive and effective protection for the packaged items.

[0038] Furthermore, an antistatic agent layer 8 is provided on the surface of several bubble film bodies 2, and a nano-clay composite coating 7 is provided on the side of the antistatic agent layer 8 facing away from the bubble film body 2.

[0039] The antistatic agent layer 8 is a non-migratory antistatic agent layer 8. The antistatic agent layer 8 can reduce the surface resistance of the bubble film, allowing the charge to be conducted quickly, thereby preventing the accumulation of static electricity and improving the safety and reliability of the packaging. It is especially suitable for packaging items that are sensitive to static electricity. The nano-clay composite coating 7 can enhance the mechanical properties of the bubble film, improve its abrasion resistance, puncture resistance and tear resistance, thereby better protecting the packaged items.

[0040] 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 kraft paper composite bubble wrap, characterized in that, include: Kraft paper body (1) and several bubble wrap bodies (2), the several bubble wrap bodies (2) are connected by a sealing connecting strip (15), the bubble wrap bodies (2) and the sealing connecting strip (15) are integrally formed, and the bubble wrap bodies (2) and the sealing connecting strip (15) are bonded to the kraft paper body (1) by a two-component polyurethane adhesive layer (3). Each of the bubble film bodies (2) includes a high-density polyethylene layer (4), a linear low-density polyethylene layer (5), and a honeycomb plastic mesh layer (6), and the high-density polyethylene layer (4), the honeycomb plastic mesh layer (6), and the linear low-density polyethylene layer (5) are arranged sequentially.

2. The kraft paper composite bubble wrap according to claim 1, characterized in that: The high-density polyethylene layer (4) has a thickness of 0.08 mm, and the linear low-density polyethylene layer (5) has a thickness of 0.10 mm.

3. The kraft paper composite bubble wrap according to claim 1, characterized in that: An antistatic agent layer (8) is provided on the surface of several of the bubble film bodies (2), and a nano-clay composite coating (7) is provided on the side of the antistatic agent layer (8) facing away from the bubble film body (2).

4. The kraft paper composite bubble wrap according to claim 1, characterized in that: The kraft paper body (1) has a first polypropylene layer (9) and a second polypropylene layer (10) on both sides, and the first polypropylene layer (9) is bonded to a two-component polyurethane adhesive layer (3).

5. The kraft paper composite bubble wrap according to claim 4, characterized in that: The kraft paper body (1) is provided with an aluminum foil layer (11) on a part away from the first polypropylene layer (9). The aluminum foil layer (11) is provided with an ethylene-vinyl acetate copolymer coating (12) on the side away from the kraft paper body (1). The ethylene-vinyl acetate copolymer coating (12) is connected to the second polypropylene layer (10) away from the aluminum foil layer (11).

6. The kraft paper composite bubble wrap according to claim 1, characterized in that: The kraft paper body (1) is provided with a writing area (13), which is a water-based acrylic coating area.

7. The kraft paper composite bubble wrap according to claim 1, characterized in that: The kraft paper body (1) is provided with an adhesive area (14), which is a nano-siloxane alkyl hydrophobic and oleophobic coating area.

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