A bopp packaging film
By designing an outer paper tube, an inner paper tube, and a continuous tear-off structure in the BOPP packaging film, the problem of inconvenience in sealing bowls with existing BOPP packaging films is solved, achieving a convenient bowl sealing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAINING CHANGKUN PACKAGING
- Filing Date
- 2025-09-01
- Publication Date
- 2026-06-26
AI Technical Summary
Existing BOPP packaging films lack tear lines when sealing bowls, causing inconvenience in use.
Design a BOPP packaging film structure, including an outer paper tube and an inner paper tube. The inner paper tube has a continuous dotted tear strip, the inner side of the outer paper tube has a stop block for limiting the position, and the inner paper tube has a pull ring for easy tearing and use.
It enables easy tearing along the tear line, adapts to sealing bowls of different sizes, and improves ease of use.
Smart Images

Figure CN224410190U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging film technology, and in particular to a BOPP packaging film. Background Technology
[0002] BOPP film is generally a multi-layer co-extruded film, made by co-extruded polypropylene granules into sheets, and then stretching them in both longitudinal and transverse directions. Due to the stretching and molecular orientation, this type of film has good physical stability, mechanical strength, and airtightness, as well as high transparency and gloss. It is also tough and wear-resistant, making it a widely used printing film.
[0003] BOPP film can be used as a common packaging film in daily life. In the current technology, BOPP packaging film is usually wrapped around the outside of a paper tube. When using it, the user stretches it to the required length and then cuts it. In daily life, sometimes some uneaten food is put into a bowl and then the opening of the bowl is sealed with packaging film. The diameter of a standard bowl commonly used in households is 12-14 cm. Since the existing BOPP packaging film does not have a tear line, it needs to be cut, which is inconvenient to use. Utility Model Content
[0004] The purpose of this invention is to provide a BOPP packaging film to solve the problems mentioned in the background section.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A BOPP packaging film includes an outer paper tube, with a rolled outer BOPP packaging film on the outside of the outer paper tube, an inner paper tube on the inside of the outer paper tube, and a rolled inner BOPP packaging film on the outside of the inner paper tube, the inner BOPP packaging film having continuous dotted tear lines.
[0007] Furthermore, a stop block is fixedly provided around the inner perimeter of the outer paper tube, and one side of the inner BOPP packaging film abuts against the stop block.
[0008] Furthermore, a fixing block is fixedly provided on the inner side of the inner paper tube, and a pull ring is fixedly provided on one side of the fixing block.
[0009] Furthermore, the shape of the dashed tear is straight.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] 1. This utility model features a rolled inner BOPP packaging film on the outside of an inner paper tube. The inner BOPP packaging film has continuous dotted tear lines, making it easy to tear along these lines. The size of a single torn inner BOPP packaging film is designed to wrap bowls used in daily life. After placing food into the bowl, the user simply seals the opening of the bowl with a single rectangular inner BOPP packaging film. Furthermore, since the outer BOPP packaging film does not have tear lines, it can be used normally. The combination of the outer and inner BOPP packaging films further improves the convenience for users.
[0012] 2. This utility model uses blocks fixedly installed around the inner perimeter of the outer paper tube to block and limit movement, thereby positioning the inner paper tube and the inner BOPP packaging film inside the outer paper tube. Attached Figure Description
[0013] Figure 1 This is a top view of the BOPP packaging film proposed in this utility model.
[0014] Figure 2 This is a top view schematic diagram of the outer paper tube and outer BOPP packaging film of the present invention.
[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the inner paper tube of a BOPP packaging film proposed in this utility model;
[0016] Figure 4 This is a schematic diagram of the unfolded structure of the inner BOPP packaging film in Embodiment 1 of the present invention.
[0017] Figure 5 This is a schematic diagram of the unfolded structure of the BOPP packaging film in Example 2 of this utility model.
[0018] In the diagram: 1 Outer paper tube, 2 Outer BOPP packaging film, 3 Inner paper tube, 4 Inner BOPP packaging film, 5 Stop block, 6 Fixing block, 7 Pull ring, 8 Dashed tear line. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0020] Example 1
[0021] Reference Figure 1-4A BOPP packaging film includes an outer paper tube 1, an outer BOPP packaging film 2 rolled on the outside of the outer paper tube 1, an inner paper tube 3 inside the outer paper tube 1, an inner BOPP packaging film 4 rolled on the outside of the inner paper tube 3, and a continuous dotted tear 8 on the inner BOPP packaging film 4. The dotted tear 8 is straight in shape.
[0022] In the above embodiments, the present invention provides an inner BOPP packaging film 4 rolled up on the outside of the inner paper tube 3. The inner BOPP packaging film 4 has continuous dotted tear lines 8, and the shape of the dotted tear lines 8 is straight, so it is very convenient to tear along the dotted tear lines 8. The shape of a single inner BOPP packaging film 4 after tearing is rectangular, and the size of a single rectangular inner BOPP packaging film 4 is designed to wrap a bowl with a diameter of 14 cm used in daily life. After the user puts the food into the bowl with a diameter of less than 14 cm, he / she can use a single rectangular inner BOPP packaging film 4 to wrap and seal the opening of the bowl. In addition, since the outer BOPP packaging film 2 is a packaging film without tear lines, it can be used normally. The combination of the outer BOPP packaging film 2 and the inner BOPP packaging film 4 further improves the convenience of use for users.
[0023] Specifically, a stop block 5 is fixedly installed around the inner perimeter of the outer paper tube 1, and one side of the inner BOPP packaging film 4 abuts against the stop block 5.
[0024] In the above embodiment, by fixing the baffles 5 around the inner side of the outer paper tube 1, the baffles 5 can play a blocking and limiting role, thereby placing the inner paper tube 3 and the inner BOPP packaging film 4 inside the outer paper tube 1.
[0025] Specifically, a fixing block 6 is fixedly installed on the inner side of the inner paper tube 3, and a pull ring 7 is fixedly installed on one side of the fixing block 6.
[0026] In the above embodiment, by fixing a pull ring 7 on one side of the fixing block 6, the inner paper tube 3 is pulled by hooking the pull ring 7, so that the inner paper tube 3 and the inner BOPP packaging film 4 are moved out from the inside of the outer paper tube 1.
[0027] Example 2
[0028] Reference Figure 1 , 2 3, 5, a BOPP packaging film, based on Example 1, the shape of the dotted tear 8 is changed to an oblique shape, while the rest of the structure remains unchanged. When the shape of the dotted tear 8 is oblique, after tearing along the dotted tear 8, the shape of a single inner BOPP packaging film 4 is a parallelogram. This indicates that after the dotted tear 8 changes, the shape of a single inner BOPP packaging film 4 also changes accordingly, thereby allowing for customization of some required shapes and sizes for customers and expanding usage needs.
[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A BOPP packaging film, characterized in that, It includes an outer paper tube (1), the outer paper tube (1) is provided with a rolled outer BOPP packaging film (2) on the outside, the outer paper tube (1) is provided with an inner paper tube (3) on the inside, the inner paper tube (3) is provided with a rolled inner BOPP packaging film (4) on the outside, and the inner BOPP packaging film (4) is provided with continuous dotted tear-shaped openings (8).
2. A BOPP packaging film according to claim 1, characterized in that, The outer paper tube (1) is fixedly provided with a stop block (5) around its inner perimeter, and one side of the inner BOPP packaging film (4) abuts against the stop block (5).
3. A BOPP packaging film according to claim 1, characterized in that, A fixing block (6) is fixedly provided on the inner side of the inner paper tube (3), and a pull ring (7) is fixedly provided on one side of the fixing block (6).
4. The BOPP packaging film according to claim 1, characterized in that, The shape of the dashed tear (8) is straight.