High-waterproofness packaging film and winding support thereof

Abstract

The utility model discloses a packaging film with high waterproofness and a winding support thereof, and belongs to the technical field of packaging films.The packaging film comprises a support, the inner side of the support is rotationally connected with a winding rod, the outer side of the winding rod is connected with a packaging film body in a winding mode, and the two ends of the winding rod are both fixedly connected with limiting discs; waterproof layers are arranged on the upper surface and the lower surface of the packaging film body, fixed cylinders are fixedly connected to the left sides of the inner walls of the supports, movable rods are connected to the interiors of the fixed cylinders, and one ends of the movable rods penetrate through the interiors of the fixed cylinders; a pressing block is arranged on the inner side of the support and located between the fixing cylinder and the winding rod. According to the high-waterproofness packaging film and the winding support thereof, the surface of the packaging film body is coated with the two waterproof layers by adopting a three-layer compounding process, so that the waterproofness of the packaging film is improved, and when the packaging film is used, the wear-resistant effect of the packaging film body can be greatly improved by utilizing the arranged protective layer, so that the service life of the packaging film body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging films, in particular to a packaging film with high waterproof performance and its winding bracket. Background Technique

[0002] The packaging film is used for winding and packaging to make the packaged objects more stable and tidy, and is applied to industries such as foreign trade exports, papermaking, hardware, plastic chemicals, and pharmaceuticals;

[0003] For example, a packaging film with an efficient waterproof function with the publication number of CN216733359U realizes the purpose of good use effect through the cooperation of a winding rod, a packaging film body, a base layer, a tensile layer, a wear-resistant layer, a flame-retardant layer, an anti-corrosion layer, a first protective layer, a second protective layer, and a third protective layer, and has the advantages of waterproof, anti-corrosion, flame-retardant, and wear-resistant, improving the protection effect of the packaging film, meeting the needs of the current market, improving the practicability and usability of the packaging film, and solving the problem of poor use effect of the previous packaging film; by setting a base layer to improve the waterproof ability of the packaging film, by setting a tensile layer to improve the tensile ability of the packaging film, by setting a wear-resistant layer to improve the wear-resistant ability of the packaging film, thereby prolonging the service life of the packaging film, by setting a flame-retardant layer to improve the flame-retardant ability of the packaging film, by setting an anti-corrosion layer to improve the protection effect of the packaging film, by setting a first protective layer, a second protective layer, and a third protective layer to improve the anti-corrosion ability of the packaging film and enhance the waterproof ability of the packaging film, and by setting a limiting plate to facilitate the winding and use of the packaging film;

[0004] During the use of the packaging film, the items covered by the packaging film need to be protected from water. However, the existing packaging films do not have good waterproof performance, making it easy for water to penetrate through the packaging film and enter the items. When the above technical solution is used, the packaging film is made of a single material, resulting in poor waterproof performance.

[0005] Therefore, we propose a packaging film with high waterproof performance and its winding bracket, which can well solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a packaging film with high waterproof performance and its winding bracket to solve the problem that the existing packaging film does not have good waterproof performance, making it easy for water to penetrate through the packaging film and enter the items as mentioned in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: a packaging film with high waterproof performance and its winding bracket, including a bracket, a winding rod is rotatably connected to the inner side of the bracket, a packaging film body is wound around the outer side of the winding rod, and limiting disks are fixedly connected to both ends of the winding rod;

[0008] It further includes: waterproof layers are provided on both the upper surface and the lower surface of the packaging film body. Fixed cylinders are fixedly connected to the left sides of the inner walls of the brackets, and movable rods are connected inside the fixed cylinders, and one end of the movable rod penetrates through the inside of the fixed cylinder;

[0009] Pressing blocks are arranged between the fixed cylinders and the winding rods on the inner side of the brackets. The left sides of the pressing blocks are fixedly connected to the right ends of the two movable rods, and springs are installed between the left ends of the movable rods and the inner walls of the fixed cylinders.

[0010] Preferably, the two waterproof layers are heat-sealed to the packaging film body, and the waterproof layer is chlorinated polyethylene, and the use of the two waterproof layers can improve the waterproof performance of the packaging film body.

[0011] Preferably, protective layers are provided on the outer sides of the waterproof layers. Grooves are equally spaced on the upper surface and the lower surface of the waterproof layer, and protrusions are equally spaced on the opposite surfaces of the two protective layers.

[0012] Preferably, the positions of the protrusions and the grooves correspond one by one, and the protrusions and the grooves are snap-connected, and the use of the protrusions and the grooves can make the connection between the protective layer and the waterproof layer more tight.

[0013] Preferably, elastic wires are arranged inside the protective layers, and the elastic wires are cross-distributed at equal intervals.

[0014] Preferably, the end of the movable rod extending into the fixed cylinder is arranged in a "T" shape, and the movable rod is slidably connected to the fixed cylinder.

[0015] Preferably, the side of the pressing block away from the movable rod is arranged in an arc shape.

[0016] Compared with the prior art, the beneficial effects of the present utility model are: the high-waterproof packaging film and its winding bracket adopt a novel structural design, and the specific content is as follows:

[0017] (1) Adopting a three-layer composite process, two waterproof layers are coated on the surface of the packaging film body, thereby improving its waterproof performance. When in use, the provided protective layer can greatly improve the wear resistance of the packaging film body and extend the service life of the packaging film body;

[0018] Furthermore, by equally spacing and cross-arranging elastic wires on the outer side of the protective layer, the tensile performance of the packaging film body can be improved. The protective layer is snapped into the groove on the waterproof layer through the protrusion, thereby making the connection between the protective layer and the waterproof layer more tight;

[0019] (2) By rotating the winding rod, the packaging film body can be wound around the winding rod. As the number of layers of the packaging film body wound on the winding rod increases, the pressing block can be squeezed. At the same time, the movable rod moves and squeezes the spring, and the elastic force of the spring can drive the movable rod and the pressing block to always press the packaging film body, thereby preventing the packaging film body from wrinkling during winding and affecting the use of the packaging film body.

[0020] Furthermore, by providing the limiting disc, the packaging film body can be prevented from shifting during winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic three-dimensional structure diagram of the bracket, winding rod and fixed cylinder of the present utility model;

[0022] Figure 2 It is a schematic main sectional structure diagram of the packaging film body of the present utility model;

[0023] Figure 3 It is a schematic connection structure diagram of the elastic wire and the protective layer of the present utility model;

[0024] Figure 4 It is a schematic top sectional structure diagram of the fixed cylinder of the present utility model;

[0025] Figure 5 For the present utility model Figure 2 The enlarged structure diagram at A in.

[0026] In the figure: 1. Bracket; 2. Winding rod; 3. Packaging film body; 4. Waterproof layer; 5. Protective layer; 6. Convex block; 7. Groove; 8. Elastic wire; 9. Fixed cylinder; 10. Movable rod; 11. Pressing block; 12. Spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1 - 5 , the present utility model provides the following technical solutions: A packaging film with high waterproof performance and its winding bracket;

[0029] Embodiment 1: To solve the problem in the prior art that the existing packaging film does not have good waterproof performance, making it easy for water to penetrate through the packaging film and enter the article, the following solution is disclosed. Specifically refer to Figure 2 , Figure 3 andFigure 5 As shown in the figure, it includes a bracket 1. A winding rod 2 is rotatably connected to the inner side of the bracket 1. A packaging film body 3 is wound around the outer side of the winding rod 2. Limiting disks are fixedly connected to both ends of the winding rod 2.

[0030] It also includes: waterproof layers 4 are arranged on both the upper surface and the lower surface of the packaging film body 3. The two waterproof layers 4 are heat-sealed to the packaging film body 3. The waterproof layer 4 is chlorinated polyethylene. The use of the two waterproof layers 4 can improve the waterproof performance of the packaging film body 3.

[0031] During use, the packaging film body 3 on the winding rod 2 is pulled out and covered on the surface of the article. Then, by using the three-layer composite process of the packaging film body 3, the two waterproof layers 4 are coated on the surface of the packaging film body 3, thereby improving its waterproof performance and preventing the covered article from being damaged by water.

[0032] Embodiment 2: Different from Embodiment 1, in this embodiment, the protective layer 5 and the elastic filaments 8 are used to extend the service life of the packaging film body 3 and improve the tensile performance of the packaging film body 3. For details, refer to Figure 2 、 Figure 3 and Figure 5 As shown in the figure, protective layers 5 are arranged on the outer sides of the waterproof layers 4. Grooves 7 are equally spaced on the upper surface and the lower surface of the waterproof layer 4. Protrusions 6 are equally spaced on the opposite surfaces of the two protective layers 5. The positions of the protrusions 6 correspond to those of the grooves 7 one by one. The protrusions 6 and the grooves 7 are snap-connected. The use of the protrusions 6 and the grooves 7 can make the connection between the protective layer 5 and the waterproof layer 4 closer. Elastic filaments 8 are arranged inside the protective layers 5, and the elastic filaments 8 are equally spaced and cross-distributed.

[0033] During the use process, the use of the provided protective layer 5 can greatly improve the wear resistance effect of the packaging film body 3, thereby extending the service life of the packaging film body 3. At the same time, elastic filaments 8 are equally spaced and cross-arranged on the outer side of the protective layer 5, which can improve the tensile performance of the packaging film body 3 and prevent the packaging film body 3 from being torn and damaged due to external forces. Moreover, the protective layer 5 is connected to the waterproof layer 4 more tightly by the protrusions 6 being snapped into the grooves 7 on the waterproof layer 4, further improving the waterproof performance.

[0034] Embodiment 3: Different from Embodiment 2, in this embodiment, the elastic force of the spring 12 is used to make the movable rod 10 drive the pressing block 11 to always press the packaging film body 3, preventing the packaging film body 3 from wrinkling when being wound, which affects the use of the packaging film body 3. For details, refer to Figure 1 and Figure 4As shown in the figure, fixed cylinders 9 are fixedly connected to the left sides of the inner walls of the support 1, and a movable rod 10 is connected inside the fixed cylinder 9. One end of the movable rod 10 penetrates through the inside of the fixed cylinder 9. The end of the movable rod 10 extending into the fixed cylinder 9 is arranged in a "T" shape, and the movable rod 10 is slidably connected to the fixed cylinder 9; a pressing block 11 is arranged between the fixed cylinder 9 and the winding rod 2 on the inner side of the support 1. The left side of the pressing block 11 is fixedly connected to the right ends of the two movable rods 10. A spring 12 is installed between the left end of the movable rod 10 and the inner wall of the fixed cylinder 9. The side of the pressing block 11 away from the movable rod 10 is arranged in an arc shape;

[0035] When storing the packaging film body 3 by winding, the staff can wind the packaging film body 3 around the winding rod 2 by rotating the winding rod 2. As the number of layers of the packaging film body 3 wound on the winding rod 2 increases, the pressing block 11 can be squeezed. At the same time, the movable rod 10 moves and squeezes the spring 12, and the elastic force of the spring 12 can drive the movable rod 10 and the pressing block 11 to always press the packaging film body 3, thereby preventing the packaging film body 3 from wrinkling during winding and affecting the use of the packaging film body 3. And the offset of the packaging film body 3 during winding can be avoided by the provided limiting disc.

[0036] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A packaging film with high waterproof property, comprising a packaging film body (3), characterized in that: The upper surface and the lower surface of the packaging film body (3) are both provided with waterproof layers (4), and protective layers (5) are arranged on the outer sides of the waterproof layers (4). Grooves (7) are equidistantly formed on the upper surface and the lower surface of the waterproof layer (4), and convex blocks (6) are equidistantly arranged on the opposite surfaces of the two protective layers (5).

2. The high waterproof packaging film according to claim 1, characterized in that: The positions of the convex blocks (6) correspond to those of the grooves (7) one by one, and the convex blocks (6) and the grooves (7) are in snap connection, and the connection between the protective layer (5) and the waterproof layer (4) can be made closer by using the convex blocks (6) and the grooves (7).

3. A packaging film with high waterproofness according to claim 1, characterized in that: The two waterproof layers (4) and the packaging film body (3) are both in heat-sealing connection, and the waterproof layer (4) is chlorinated polyethylene, and the waterproof performance of the packaging film body (3) can be improved by using the two waterproof layers (4).

4. A packaging film with high waterproofness according to claim 1, characterized in that: Elastic wires (8) are arranged inside the protective layers (5), and the elastic wires (8) are distributed in an equidistant and crossed manner.

5. A winding bracket, characterized in that: It includes the high-waterproof packaging film as described in any one of claims 1-4, and further includes a bracket (1). A winding rod (2) is rotatably connected to the inner side of the bracket (1), and a packaging film body (3) is wound around the outer side of the winding rod (2), and limiting discs are fixedly connected to both ends of the winding rod (2); Fixing cylinders (9) are fixedly connected to the left sides of the inner walls of the brackets (1), and movable rods (10) are connected inside the fixing cylinders (9), and one end of the movable rod (10) penetrates through the inside of the fixing cylinder (9); A pressing block (11) is arranged between the fixing cylinder (9) and the winding rod (2) on the inner side of the bracket (1). The left side of the pressing block (11) is fixedly connected to the right ends of the two movable rods (10), and a spring (12) is installed between the left end of the movable rod (10) and the inner wall of the fixing cylinder (9).

6. The winding bracket according to claim 5, characterized in that: The end of the movable rod (10) extending into the fixing cylinder (9) is arranged in a "T" shape, and the movable rod (10) and the fixing cylinder (9) are in sliding connection.

7. The winding bracket according to claim 5, wherein: The side of the pressing block (11) away from the movable rod (10) is arranged in an arc shape.

Images