Packaging film
By setting reversible vents and a sealing structure on the packaging film, the problem of water vapor escape is solved, keeping the inside of the film dry, preventing microbial growth, and extending the shelf life of food.
Patent Information
- Application Number
- CN202520265450.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-19
AI Technical Summary
When existing packaging films wrap food with high moisture content, water vapor cannot be effectively released, resulting in dampness inside the packaging film, which promotes microbial growth and affects food quality.
A packaging film was designed, which includes grooves and vents on the film body. The vents can be closed or opened by a sealing strip. Water vapor can be smoothly discharged and sealed by flipping the sealing strip. The position of the sealing strip is fixed by an adhesive layer and release paper. An insert enhances the sealing effect. It can be easily operated by a pull ring.
It enables convenient venting of water vapor, maintains a dry environment inside the packaging film, prevents microbial growth, extends food shelf life, and improves the effectiveness of use.
Smart Images

Figure CN223721637U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of membrane technology, concretely to a packaging film. BACKGROUND
[0002] Food packaging film is used to wrap on the surface of food, to isolate the decomposition of microorganism bacteria and the entry of external pollutants, prevent and prolong the high polymer material of food metamorphic. Food packaging film mainly includes photocatalytic type inorganic antibacterial agent film, natural and high molecular antibacterial agent film, composite antibacterial agent film, inorganic antibacterial agent film, organic antibacterial agent film these kinds.
[0003] At present, the existing packaging film when wrapping the food with more moisture, due to the slow evaporation of water in food, more water vapor will be produced, water vapor cannot be discharged, will condense into water droplets in the packaging film, cause the internal environment of packaging film to be too humid, thus providing a good growth medium for microorganism, accelerating the metamorphic process of food, making food appear peculiar smell, discoloration and other phenomena, affect the use effect of packaging film. UTILITARY MODEL CONTENTS
[0004] The utility model discloses a packaging film.
[0005] The utility model discloses the following technical scheme to realize the above-mentioned purpose, a packaging film, including the film body, be provided with the recess on the film body, the recess bottom wall is evenly provided with a plurality of breathable holes, the recess inside is provided with the sealing strip for closing breathable hole, the sealing strip can turn out or embed the recess inside.
[0006] As the further setting of the utility model, the recess bottom wall is provided with the self-adhesive layer, and the lower surface of the sealing strip is provided with release paper for bonding with the self-adhesive layer.
[0007] As the further setting of the utility model, the lower surface of the sealing strip is provided with a plurality of embedding blocks for embedding inside the breathable hole.
[0008] As the further setting of the utility model, one end of the sealing strip is connected to the side wall of the recess, and the other end is provided with a pull ring.
[0009] As the further setting of the utility model, the film body is provided with an embedding groove in communication with the recess, and the pull ring is used for clamping inside the embedding groove.
[0010] As the further setting of the utility model, the film body is made of PE material.
[0011] Compared with the prior art, the utility model has the beneficial effects that:
[0012] The utility model discloses a sealing strip can be turned over the recess outside, make the air hole open, then the water vapor in the packing film can be discharged smoothly through the air hole, after the water vapor is discharged, can turn over the sealing strip, embed it in the recess inside again, thereby close the air hole, guarantee the isolation effect of packing film, then through this setting, do not need to peel the packing film whole from food when discharging water vapor, both convenient for the discharge of water vapor, and convenient for the use of packing film, thereby can guarantee the dry environment in packing film, avoid the breeding of microorganism, guarantee the use effect of packing film. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 It is the structural diagram of the utility model;
[0014] Fig. 2 It is the structural diagram of the film body and non - drying adhesive layer in the utility model;
[0015] Fig. 3 It is the structural diagram of the sealing strip, release paper, embedded block and pull ring in the utility model.
[0016] Reference signs: 1, film body;2, recess;3, air hole;4, sealing strip;5, non - drying adhesive layer;6, release paper;7, embedded block;8, pull ring;9, embedded groove. DETAILED DESCRIPTION
[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.
[0018] Please refer to Figs. 1-3As shown, a packaging film includes a film body 1 made of PE material, which has good strength and toughness, so that the film body 1 has good tensile strength, a groove 2 is arranged on the film body 1, and a plurality of air holes 3 are uniformly arranged on the bottom wall of the groove 2, a sealing strip 4 for closing the air holes 3 is arranged in the groove 2, and the sealing strip 4 can be flipped out or embedded in the groove 2, so that after the food is wrapped by the packaging film, if there is too much water vapor, the sealing strip 4 can be flipped out of the groove 2, so that the air holes 3 are opened, and the water vapor in the packaging film can be smoothly discharged through the air holes 3, and after the water vapor is discharged, the sealing strip 4 can be flipped and embedded in the groove 2 again, so as to close the air holes 3 and ensure the isolation effect of the packaging film. Through this setting, the packaging film does not need to be peeled off from the food when discharging water vapor, which is convenient for discharging water vapor and using the packaging film, so as to ensure the dry environment in the packaging film and prevent the growth of microorganisms, and the use effect of the packaging film is ensured.
[0019] Please refer to Figs. 1-3 As shown, an adhesive layer 5 is arranged on the bottom wall of the groove 2, and a release paper 6 for adhering with the adhesive layer 5 is arranged on the lower surface of the sealing strip 4, so that after the sealing strip 4 is embedded in the groove 2, the adhesive layer 5 will adhere with the release paper 6, so as to fix the sealing strip 4 in the groove 2 and close the air holes 3, and after the sealing strip 4 is flipped out of the groove 2, the adhesive layer 5 and the release paper 6 can be peeled off, which is convenient and simple to operate. A plurality of embedding blocks 7 for embedding in the air holes 3 are arranged on the lower surface of the sealing strip 4, and the embedding blocks 7 are in cylindrical shape, so that after the sealing strip 4 is embedded in the groove 2, the embedding blocks 7 will be embedded in the air holes 3, and the sealing effect of the sealing strip 4 can be improved by plugging the air holes 3 with the embedding blocks 7, so as to ensure the use effect of the film body 1. One end of the sealing strip 4 is connected to the side wall of the groove 2, and the other end is provided with a pull ring 8, so that when the sealing strip 4 needs to be flipped, the pull ring 8 can be pinched and forced, and the pull ring 8 can provide a force point for flipping the sealing strip 4, so that the operation is more relaxed and labor-saving. The film body 1 is provided with an embedding groove 9 communicating with the groove 2, and the pull ring 8 is used to be embedded in the embedding groove 9, so that the pull ring 8 can be hidden in the embedding groove 9, so as to avoid the pull ring 8 protruding from the surface of the film body 1, thereby avoiding the sealing strip 4 being lifted due to accidental touch of the pull ring 8.
[0020] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.
[0021] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.
Claims
1. A packaging film comprising a film body (1), characterized in that: The film body (1) is provided with a groove (2), a plurality of air holes (3) are uniformly arranged on the bottom wall of the groove (2), a sealing strip (4) for closing the air holes (3) is arranged in the groove (2), and the sealing strip (4) can be flipped out or embedded in the groove (2).
2. A packaging film according to claim 1, characterised in that: A layer of adhesive (5) is arranged on the bottom wall of the groove (2), and a release paper (6) for bonding with the adhesive (5) is arranged on the lower surface of the sealing strip (4).
3. A packaging film according to claim 2, characterised in that: A plurality of embedding blocks (7) for embedding in the air holes (3) are arranged on the lower surface of the sealing strip (4).
4. A packaging film according to claim 2, characterised in that: One end of the sealing strip (4) is connected to the side wall of the groove (2), and the other end is provided with a pull ring (8).
5. A packaging film according to claim 4, characterised in that: The film body (1) is provided with an embedding groove (9) communicating with the groove (2), and the pull ring (8) is used for being clamped into the embedding groove (9).
6. A packaging film according to claim 1, characterized in that: The film body (1) is made of PE material.