Bubble film and cold chain insulation bag
By designing the inner and outer bubble structures and connecting layers, the problem of poor insulation or insufficient cushioning protection of bubble film in cold chain transportation is solved, achieving a balance between the insulation and cushioning performance of bubble film.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG PENGYUAN NEW MATERIAL TECH GRP CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-06-19
AI Technical Summary
Existing bubble wrap has problems in cold chain transportation due to its single-size bubble design, which results in limited insulation or insufficient cushioning protection.
It adopts an inner and outer bubble structure design, with the inner bubble diameter being 5-8mm and the outer bubble diameter being 10-15mm. Combined with the connecting layer and aluminum layer, it forms a double-layer air isolation structure, and local bonding is achieved through vacuum plating and hot melt adhesive dots to enhance the fit and heat preservation effect.
This design achieves the advantages of bubble wrap in both cushioning and insulation, thus improving the protection and insulation of items.
Smart Images
Figure CN224376495U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bubble wrap technology, specifically bubble wrap and cold chain insulated bags. Background Technology
[0002] In cold chain logistics transportation, bubble wrap is often used in cold chain insulation packaging due to its good cushioning performance and certain heat insulation effect, in order to protect the goods from collision damage and maintain a low temperature environment during transportation. Bubble wrap usually adopts a single-layer uniform bubble structure or a simple composite double-layer bubble structure, with consistent bubble size and distribution density.
[0003] While existing bubble wrap can accomplish cold chain transportation, its single-size bubble design results in limited insulation due to the thin air insulation layer, even though small bubbles provide tighter cushioning. Large bubbles, on the other hand, form a thicker air insulation layer, but their poor adhesion to the item leads to insufficient cushioning. Therefore, bubble wrap and cold chain insulated bags are proposed to address these issues. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides bubble wrap and cold chain insulated bags, which combine the advantages of bubble wrap, such as cushioning and insulation performance. It solves the problems of existing bubble wrap, which, while capable of cold chain transportation, suffer from limited insulation due to the single-size bubble design. Small bubbles provide tighter cushioning but the thin air insulation layer results in limited insulation, while large bubbles, although forming a thicker air insulation layer, have poor adhesion to the items and insufficient cushioning protection.
[0006] (II) Technical Solution
[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a bubble film, comprising: an inner bubble structure, wherein the inner bubble structure is the side that directly contacts the object, and its surface is distributed with first bubbles with a diameter of 5-8 mm; an outer bubble structure, wherein the outer bubble structure is the side away from the object, and its surface is distributed with second bubbles with a diameter of 10-15 mm; a connecting layer, wherein the connecting layer is fixedly disposed between the outer surface of the inner bubble structure and the inner surface of the outer bubble structure; the outer surface of the outer bubble structure is vacuum-plated with an aluminum layer, the aluminum layer completely covering the outer surface of the outer bubble structure; the connecting layer includes ribs, the ribs being fixedly connected to the outer surface of the inner bubble structure and the inner surface of the outer bubble structure respectively, forming a closed interlayer space; both the inner bubble structure and the outer bubble structure include a base layer.
[0008] Based on the above technical solution, the present invention can be further improved as follows.
[0009] Furthermore, the ribs are made of polyethylene or polypropylene by extrusion molding, and the connecting layer also includes hot melt adhesive dots, which are evenly distributed in the gaps between the ribs to achieve local bonding between the inner bubble structure and the outer bubble structure.
[0010] Furthermore, both the first bubble and the second bubble are closed air chambers, and the base layer has a thickness of 1-3 mm.
[0011] Furthermore, the distribution density of the first bubble on the inner bubble structure is 4-6 per square centimeter, and the distribution density of the second bubble on the outer bubble structure is 1-3 per square centimeter.
[0012] A cold chain insulated bag includes an insulated bag body, a first sealing component is fitted inside the opening of the insulated bag body, two pull handles are symmetrically fixedly connected to the outer side wall of the insulated bag body, and an auxiliary storage component for folding and storage is also fixedly connected to the outer side wall of the insulated bag body.
[0013] Furthermore, the first sealing assembly includes a concave buckle and a convex buckle. The concave buckle and the convex buckle are respectively fixedly installed on the inner sidewalls on both sides of the opening of the insulated bag body, and the concave buckle and the convex buckle are located on the same horizontal plane. The concave buckle and the convex buckle form a sealing structure by interlocking with each other.
[0014] Furthermore, the auxiliary storage component includes an elastic cord fixedly connected to the outside of the insulated bag body, a first Velcro fastener fixedly connected to the outside of the connecting end of the elastic cord, and two second Velcro fasteners fixedly connected to the outside of the free end of the elastic cord, wherein the first Velcro fastener is bonded to one of the second Velcro fasteners.
[0015] Furthermore, one of the pull handles has a connecting buckle on its outer side, and the other pull handle has a connecting hole on its outer side that corresponds to the connecting buckle. There are multiple connecting buckles.
[0016] The beneficial effects of this utility model are:
[0017] This bubble wrap, by setting bubbles of different sizes and densities in different areas of the bubble wrap, successfully resolves the inherent contradiction that it is difficult to balance heat preservation and cushioning performance in a single-size bubble design, and possesses the advantages of bubble wrap in balancing both cushioning and heat preservation performance.
[0018] This cold chain insulated bag can be sealed using a first sealing component and an auxiliary storage component. The bag can be easily moved by pulling the handle. It has the advantages of improving the overall insulation effect of the bag and making it easy to carry. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the structure of the insulated bag of this utility model;
[0021] Figure 3 This is a cross-sectional view of the structure of this utility model;
[0022] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.
[0023] In the diagram: 1. Inner bubble structure; 2. Outer bubble structure; 3. Connecting layer; 4. Aluminum layer; 5. Insulated bag body; 6. First sealing component; 61. Concave fastener; 62. Convex fastener; 7. Pull handle; 8. Auxiliary storage component; 81. Elastic cord; 82. First Velcro; 83. Second Velcro; 9. Connecting buckle. 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] Example 1, by Figure 1 Provided, bubble wrap, this utility model includes:
[0026] The inner bubble structure 1 is the side that directly contacts the object, and its surface is distributed with first bubbles with a diameter of 5-8 mm. The first bubbles are regularly distributed in an array along the surface of the inner bubble structure 1. The outer bubble structure 2 is the side that is away from the object, and its surface is distributed with second bubbles with a diameter of 10-15 mm. The second bubbles are regularly distributed in an array along the surface of the outer bubble structure 2. The connecting layer 3 is fixedly disposed between the outer surface of the inner bubble structure 1 and the inner surface of the outer bubble structure 2.
[0027] By setting up inner and outer layers with bubble structures of different diameters, combined with the connecting layer, a double-layer air isolation structure can be formed. The small inner bubbles can enhance the fit with the object, while the large outer bubbles can improve the overall buffering and heat insulation capabilities. The connecting layer ensures the integrity and stability of the structure, thereby achieving the protection and heat preservation effect for the object.
[0028] In this embodiment, an aluminum layer 4 is formed on the outer surface of the outer bubble structure 2 using vacuum plating technology. The aluminum layer 4 has a uniform thickness and completely covers the outer surface of the outer bubble structure 2 without any exposed areas. The connecting layer 3 includes ribs, which are fixedly connected to the outer surface of the inner bubble structure 1 and the inner surface of the outer bubble structure 2 to form a closed interlayer space. The ribs are made of polyethylene or polypropylene material by extrusion molding. The connecting layer 3 also includes hot melt adhesive dots, which are evenly distributed in the gaps between the ribs to achieve local bonding between the inner bubble structure 1 and the outer bubble structure 2.
[0029] The aluminum layer 4 effectively reflects external infrared radiation, reducing heat entering the bubble membrane through radiation and enhancing the insulation effect. The closed interlayer space formed by the grid-like ribs further blocks air convection, reducing heat transfer. At the same time, the ribs also improve the connection between the inner and outer bubble structures, making the overall structure more stable. Meanwhile, hot melt adhesive dots are evenly applied using a dispensing device. After curing, these hot melt adhesive dots locally bond the corresponding positions of the inner bubble structure 1 and the outer bubble structure 2. The number of hot melt adhesive dots at each gap depends on the size of the gap to ensure uniform bonding.
[0030] In this embodiment, both the first bubble and the second bubble are closed air chambers. Both the inner bubble structure 1 and the outer bubble structure 2 include a base layer with a thickness of 1-3 mm.
[0031] The enclosed air chamber utilizes the low thermal conductivity of air to effectively block heat transfer, thereby improving the heat insulation performance of the bubble membrane; the appropriately thick base layer provides stable support for the bubble structure, ensuring the shape of the bubble structure, and also enhancing the overall structural strength of the bubble membrane.
[0032] The distribution density of the first bubble on the inner bubble structure 1 is 4-6 per square centimeter, and the distribution density of the second bubble on the outer bubble structure 2 is 1-3 per square centimeter.
[0033] The higher distribution density of the first type of bubble enhances the tightness of contact with the object, forming a dense air insulation layer that effectively reduces direct heat exchange between the object and the outside world. The lower distribution density of the second type of bubble, combined with its larger diameter, ensures a certain level of heat insulation while reducing the amount of material used, lightening the overall weight, and improving the absorption capacity against external impacts.
[0034] Example 2, by Figure 2-4 Provided is a cold chain insulated bag, including an insulated bag body 5, the insulated bag body 5 is made of bubble wrap as the main material, a first sealing component 6 is installed on the inner side of the opening of the insulated bag body 5, two pull handles 7 are symmetrically fixedly connected to the outer side wall of the insulated bag body 5, and an auxiliary storage component 8 for folding and storage is also fixedly connected to the outer side wall of the insulated bag body 5.
[0035] The insulated bag body 5 uses bubble wrap with good heat insulation performance, providing a basic heat insulation environment for cold chain goods; the first sealing component 6 can enhance the sealing at the opening and reduce cold loss; the pull handle 7 makes it easy to carry the insulated bag; the auxiliary storage component 8 improves the storage convenience of the insulated bag. The overall structural design takes into account both heat insulation performance and ease of use.
[0036] In this embodiment, the first sealing component 6 includes a concave buckle 61 and a convex buckle 62. The concave buckle 61 and the convex buckle 62 are respectively fixedly installed on the inner sidewalls on both sides of the opening of the insulated bag body 5, and the concave buckle 61 and the convex buckle 62 are located on the same horizontal plane. The concave buckle 61 and the convex buckle 62 form a sealing structure by interlocking with each other.
[0037] The interlocking of the concave buckle 61 and the convex buckle 62 can effectively block the airflow between the inside of the insulated bag 5 and the outside, reduce the loss of cold energy caused by gas exchange, enhance the sealing and heat preservation performance of the insulated bag, and is simple and convenient to operate and easy to reuse.
[0038] In this embodiment, the auxiliary storage component 8 includes an elastic cord 81 fixedly connected to the outside of the insulated bag body 5, a first Velcro 82 fixedly connected to the outside of the connecting end of the elastic cord 81, and two second Velcro 83 fixedly connected to the outside of the free end of the elastic cord 81. The first Velcro 82 is bonded to one of the second Velcro 83.
[0039] The auxiliary storage component 8, through the cooperation of elastic cord 81 and Velcro, can fold and secure the insulated bag when not in use, or seal and roll up the upper space of the insulated bag body 5 when in use. By wrapping the elastic cord 81 around the folded part of the insulated bag body 5 and the bottom of the insulated bag body 5, and then gluing it a second time, the inner space of the insulated bag body 5 can be reduced, enhancing the insulation effect, while making it convenient to store and carry. The size after folding can be adjusted as needed. The binding force of the elastic cord can maintain the stability of the folded state, avoid damage to the insulation layer due to stacking, and extend the service life of the insulated bag.
[0040] In this embodiment, one of the pull handles 7 has a connecting buckle 9 on its outer side, and the other pull handle 7 has a connecting hole on its outer side that corresponds to the connecting buckle 9. There are multiple connecting buckles 9.
[0041] After storage, the connecting buckle 9 can be fastened to the inside of the connecting hole, thereby connecting the two pull handles 7 together. At the same time, the insulated bag body 5 can be squeezed to improve the sealing and heat preservation effect of the insulated bag body 5.
[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0043] 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 bubble wrap, characterized in that: include: The inner bubble structure (1) is the side that is in direct contact with the item, and its surface is distributed with first bubbles with a diameter of 5-8 mm. The outer bubble structure (2) is located on the side away from the object, and its surface is distributed with second bubbles with a diameter of 10-15 mm. A connecting layer (3) is fixedly disposed between the outer surface of the inner bubble structure (1) and the inner surface of the outer bubble structure (2); The outer surface of the outer bubble structure (2) is coated with an aluminum layer (4) by vacuum plating. The aluminum layer (4) completely covers the outer surface of the outer bubble structure (2). The connecting layer (3) includes ribs. The ribs are fixedly connected to the outer surface of the inner bubble structure (1) and the inner surface of the outer bubble structure (2) to form a closed interlayer space. Both the inner bubble structure (1) and the outer bubble structure (2) include a base layer.
2. The bubble film according to claim 1, characterized in that: The reinforcing ribs are made of polyethylene or polypropylene by extrusion molding. The connecting layer (3) also includes hot melt adhesive dots, which are evenly distributed in the gaps between the reinforcing ribs to achieve local bonding between the inner bubble structure (1) and the outer bubble structure (2).
3. The bubble film according to claim 2, characterized in that: Both the first bubble and the second bubble are closed air chambers, and the base layer has a thickness of 1-3 mm.
4. The bubble film according to claim 1 or 3, characterized in that: The distribution density of the first bubble on the inner bubble structure (1) is 4-6 per square centimeter, and the distribution density of the second bubble on the outer bubble structure (2) is 1-3 per square centimeter.
5. A cold chain insulated bag, characterized in that: The device includes an insulated bag body (5), which includes bubble wrap as an insulation layer as described in any one of claims 1-4. A first sealing assembly (6) is installed on the inner side of the opening of the insulated bag body (5). Two pull handles (7) are symmetrically fixedly connected to the outer side wall of the insulated bag body (5). An auxiliary storage assembly (8) for folding and storage is also fixedly connected to the outer side wall of the insulated bag body (5).
6. The cold chain insulated bag according to claim 5, characterized in that: The first sealing assembly (6) includes a concave buckle (61) and a convex buckle (62). The concave buckle (61) and the convex buckle (62) are respectively fixedly installed on the inner side walls of both sides of the opening of the heat preservation bag body (5). The concave buckle (61) and the convex buckle (62) are located on the same horizontal plane. The concave buckle (61) and the convex buckle (62) form a sealing structure by interlocking with each other.
7. The cold chain insulated bag according to claim 5 or 6, characterized in that: The auxiliary storage component (8) includes an elastic cord (81) fixedly connected to the outside of the insulated bag body (5), a first Velcro (82) fixedly connected to the outside of the connecting end of the elastic cord (81), and two second Velcro (83) fixedly connected to the outside of the free end of the elastic cord (81). The first Velcro (82) is bonded to one of the second Velcro (83).
8. The cold chain insulated bag according to claim 5, characterized in that: One of the pull handles (7) has a connecting buckle (9) on its outer side, and the other pull handle (7) has a connecting hole on its outer side that corresponds to the connecting buckle (9). There are multiple connecting buckles (9).