Antibacterial food packaging film

Abstract

The utility model discloses an antibacterial food packaging film, which belongs to the technical field of packaging films and comprises a winding drum, a packaging film is wound around the winding drum, the outer end of the packaging film is coated with a plurality of protective covering films, a plurality of groups of easy-to-tear mechanisms are equidistantly distributed at the outer end of the packaging film, and each easy-to-tear mechanism consists of a plurality of easy-to-tear holes which are linearly equidistantly distributed. A plurality of tearing assemblies are arranged at the outer end of the packaging film, a layer of protective covering film is attached to the outer side of the packaging film, the packaging film is wound around a winding drum, and due to the fact that the packaging film is of a layer-by-layer winding type, the two faces of the packaging film can be attached to the protective covering film. The protective film can form an isolation layer on the surface of the packaging film to prevent the antibacterial coating on the packaging film from being polluted by bacteria and dust in the external environment, the protective film is attached to one side of the packaging film, and after the tearing assembly is pulled up, the packaging film can be cut off, and the two protective films can be separated.

Description

TECHNICAL FIELD

[0001] The utility model relates to packaging film technical field more specifically, relate to a kind of antibacterial food packaging film. BACKGROUND

[0002] Antibacterial food packaging film is a special film used in food packaging process, with antibacterial effect, the film usually contains additives that can inhibit the growth of bacteria, mold and other microorganisms, to extend the shelf life of food and maintain the freshness of food, the application range of antibacterial food packaging film is wide, can be used for packaging meat, dairy products, cooked food, fruits and vegetables and various foods, is one of important means of food safety and shelf life.

[0003] The patent with Chinese patent publication number CN219668925U discloses a novel temperature insulation food packaging film, by combining the inner layer from the first base layer, the heat preservation layer, the elastic layer and the anti-aging layer, and then having certain heat preservation when the inner layer contacts the food, and having certain elasticity and anti-aging property in specific use, improving the service life of the film, and combining the outer layer from the second base layer, the barrier layer, the anti-ultraviolet layer and the light reflection layer, having good barrier property when the packaged food contacts the outside, avoiding the food packaged by the film from being eroded by external gas, and the cooperation of the anti-ultraviolet layer and the light reflection layer can reflect the sunlight ultraviolet, avoiding the food inside the film from being heated by sunlight, and better protecting the food inside the film.

[0004] At present, the food packaging film is coated with an antibacterial layer on the outer layer to achieve the antibacterial effect, but when the food packaging film is unpacked and not used up at one time, bacteria and dust pollutants in the air and environment will adhere to the outermost layer of the food packaging film, so that bacteria gather or mold is generated, and when used again, the antibacterial coating of the food packaging film will be damaged, thereby reducing the antibacterial ability.

[0005] Therefore, it is necessary to provide an antibacterial food packaging film to solve the above problems. UTILITY MODEL CONTENT

[0006] The utility model provides an antibacterial food packaging film, which can improve the antibacterial ability of the food packaging film when unpacked and not used up at one time.

[0007] The embodiment of the present application provides an antibacterial food packaging film, which comprises a winding drum, a packaging film is wound outside the winding drum, a plurality of protective films are coated on the outer end of the packaging film, a plurality of groups of easy-to-tear mechanisms are distributed equidistantly on the outer end of the packaging film, the easy-to-tear mechanism is composed of a plurality of easy-to-tear holes which are distributed equidistantly in a straight line, and a plurality of tear-and-pull assemblies are arranged on the outer end of the packaging film.

[0008] The technical scheme described above in the embodiment of the present application has at least the following technical effects:

[0009] (1) A protective film is attached to the outer side of the packaging film, the packaging film is wound outside the winding drum, and the two surfaces of the packaging film are attached to the protective film, so that after the food packaging film is opened for use, the protective film forms an isolation layer on the surface of the packaging film, preventing the antibacterial coating on the packaging film from being polluted by bacteria and dust in the external environment, and improving the antibacterial property during use.

[0010] (2) The protective film is attached to one side of the packaging film, and the tear-and-pull assembly is attached to the other side of the packaging film, a plurality of easy-to-tear holes are arranged on the packaging film, and the protective film is arranged in a plurality of separated structures and connected through the insertion groove and the insertion piece, so that after the tear-and-pull assembly is pulled up, the packaging film can be cut off, and the two protective films can be separated, thereby making it convenient for the user to use the packaging film.

[0011] In some embodiments, the protective film comprises a protective film made of a biaxially oriented polypropylene film material, a plurality of equidistant insertion grooves are arranged on both sides of the protective film, and the plurality of insertion grooves arranged on both sides of the protective film are distributed in a staggered manner.

[0012] In some embodiments, a plurality of equidistant insertion pieces are fixedly connected to both sides of the protective film, the insertion pieces are matched with the insertion grooves, the plurality of insertion pieces are integrally formed with the protective film, and the insertion pieces are tightly attached to the outer end of the easy-to-tear hole.

[0013] In some embodiments, the tear-and-pull assembly comprises a pull strip, the pull strip is tightly attached to the outer end of the easy-to-tear hole, connection bands are fixedly connected to both ends of the pull strip, and pull pieces are fixedly connected to the outer ends of the connection bands, the pull piece, the connection band and the pull strip are integrally formed.

[0014] In some embodiments, the connection band and the pull piece are tightly attached to the surface of the protective film, a through hole is arranged on the outer end of the pull piece, and the through hole is used to pull the pull strip after the pull piece is picked up.

[0015] In some embodiments, the tear-and-pull assembly further comprises a pull rope, the pull rope is arranged on the outer end of the pull strip, the connection band and the pull piece, and the pull rope is tightly attached to the outer surface of the packaging film.

[0016] In some embodiments, the packaging film comprises a substrate layer made of polyethylene film material, a tensile layer and a barrier layer arranged on both sides of the substrate layer respectively, the tensile layer is made of toughening material, the barrier layer is composed of ethylene-vinyl alcohol copolymer, and the outer surfaces of the tensile layer and the barrier layer are provided with an antibacterial coating composed of silver ions. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the protective film structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the protective film unfolding structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the protective film unfolding structure of the utility model; Figure 3 It is a schematic diagram of the protective film unfolding structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the protective film unfolding structure of the utility model;

[0023] Figure 6 It is a schematic diagram of the packaging film structure of the utility model.

[0024] Explanation of reference numerals in the drawings:

[0025] 1, winding drum;

[0026] 2, protective film; 21, protective film; 22, insertion slot; 23, insertion piece;

[0027] 3, packaging film; 31, barrier layer; 32, substrate layer; 33, tensile layer;

[0028] 4, tear-off assembly; 41, pull tab; 42, through hole; 43, pull rope; 44, pull strip; 45, connecting band;

[0029] 5, easy-to-tear hole. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical schemes and beneficial effects to be solved in the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0031] Based on this, the technical problems in the related art can be improved. When the food packaging film is opened and not used at one time, air and environmental bacteria and dust pollutants will adhere to the outermost layer of the food packaging film, causing bacteria to accumulate or mold to grow. When it is used again, the antibacterial coating of the food packaging film will be damaged, thereby reducing its antibacterial ability.

[0032] Please refer to Figures 1-6 An antibacterial food packaging film, comprising a winding drum 1, the winding drum 1 is surrounded by a packaging film 3, the outer end of the packaging film 3 is covered with a plurality of protective films 2, the outer end of the packaging film 3 is evenly distributed with a plurality of easy-to-tear mechanisms, the easy-to-tear mechanism is composed of a plurality of easy-to-tear holes 5 which are evenly distributed in a straight line, and the outer end of the packaging film 3 is provided with a plurality of tear components 4.

[0033] The packaging film in the present scheme is mainly used for the preservation of food packaging boxes. In production, the packaging film 3 needs to be wound on the winding drum 1 and then packaged. Different from the traditional food packaging film, the packaging film 3 in the present scheme is attached with a layer of protective film 2 on its outer surface. Since the packaging film 3 is wound on the winding drum 1, even if the packaging film 3 has only one side attached with the protective film 2, after winding, the packaging film 3 has the protective film 2 attached on both sides. When the user uses the protective film 2 to package food, it may not be used up at one time, and then the protective film 2 that is opened will be in contact with the external environment. The bacteria and dust in the environment are easy to damage the antibacterial coating on the surface of the protective film 2. By attaching the protective film 2 on the surface of the packaging film 3, the protective film 2 forms an isolation layer on the surface of the packaging film 3 after the food packaging film is opened and used, preventing the antibacterial coating on the packaging film 3 from being polluted by the bacteria and dust in the external environment, and improving the antibacterial property when used.

[0034] Optionally, in some embodiments, please refer to Figure 3 and Figure 4 The protective film 2 comprises a protective film 21 made of biaxially stretched polypropylene film material, a plurality of plug-in grooves 22 are formed on both sides of the protective film 21 in an equidistant distribution, and the plug-in grooves 22 formed on both sides of the protective film 21 are distributed in a staggered manner.

[0035] A plurality of plug-in pieces 23 are fixedly connected to both sides of the protective film 21 in an equidistant distribution, the plug-in pieces 23 are matched with the plug-in grooves 22, the plurality of plug-in pieces 23 are integrally formed with the protective film 21, and the plug-in pieces 23 are tightly attached to the outer end of the easy-to-tear hole 5.

[0036] The protective film 2 in the scheme is a continuous piece attached to the surface of the packaging film 3 in multiple pieces. The length of the protective film 2 can be customized according to the length of use, for example, twenty or thirty centimeters. The two sides of the protective film 21 are provided with insertion grooves 22. The insertion grooves 22 on the two sides of the protective film 21 are asymmetric and staggered, with a staggered distance of the width of an insertion piece 23. The two sides of the protective film 21 are connected with the insertion piece 23. The multiple insertion pieces 23 are also staggered, so that when the two protective films 21 are connected, the insertion piece 23 can be inserted into the insertion groove 22. The head of the insertion piece 23 is provided with a circular arc, which can prevent scratching the hand. The protective film 21 attached to the surface of the packaging film 3 can be attached by electrostatic adsorption.

[0037] When the two protective films 21 are separated by the tear and pull assembly 4, the insertion pieces 23 on the two sides of the protective film 21 will form jagged edges, which will protrude from the edges of the packaging film 3. Therefore, the user can pinch the insertion piece 23 to separate the protective film 21 from the packaging film 3, so as to facilitate the user to tear the protective film 2 and use the packaging film 3, improving the convenience of use.

[0038] The protective film 2 is made of biaxially oriented polypropylene film material. This film is named by stretching in two directions, so it has biaxial stretching performance, high tensile strength, rigidity and wear resistance, and is suitable for various packaging applications.

[0039] Optionally, in some embodiments, please refer to Figure 4 and Figure 5 The tear and pull assembly 4 includes a pull strip 44 tightly attached to the outer end of the easy-to-tear hole 5. The pull strip 44 is fixedly connected with a connecting band 45 at both ends. The outer end of the connecting band 45 is fixedly connected with a pull tab 41. The pull tab 41, the connecting band 45 and the pull strip 44 are integrally formed.

[0040] The connecting band 45 and the pull tab 41 are tightly attached to the surface of the protective film 21. The outer end of the pull tab 41 is provided with a through hole 42 for pulling the pull strip 44 after picking up the pull tab 41.

[0041] The tear and pull assembly 4 further includes a pull rope 43 arranged at the outer end of the pull strip 44, the connecting band 45 and the pull tab 41. The pull rope 43 is tightly attached to the outer surface of the packaging film 3.

[0042] The pull strip 44 in the scheme is attached to the side of the packaging film 3 away from the protective film 2, and connecting bands 45 are connected to both sides of the pull strip 44, and the two connecting bands 45 are connected to the pull tab 41. The connecting bands 45 at both ends of the pull strip 44 are attached to the surface of the protective film 2 by folding and bending to wrap the edges of the packaging film 3 and the protective film 2, and a through hole 42 is formed on the surface of the pull tab 41. The through hole 42 can facilitate the user to pick up the pull tab 41. Since the thickness of the pull tab 41 is relatively thin, it is not easy to be buckled out after being attached to the surface of the protective film 2. The pull tab 41 can be easily picked up through the through hole 42.

[0043] The pull strip 44, the connecting band 45 and the pull tab 41 are integrally formed, and the outer end is pasted with a pull rope 43. The width of the pull rope 43 is much smaller than that of the pull strip 44, and the pull rope 43 is tightly attached to the surface of the packaging film 3. The packaging film 3 is provided with a plurality of groups of easy-to-tear mechanisms. The distance between each group of easy-to-tear mechanisms is the same as the length of the protective film 2, so that it can coincide with the connection between the insertion slot 22 and the insertion piece 23. The easy-to-tear mechanism is composed of a plurality of easy-to-tear holes 5 distributed at equal distances in a straight line. The pull rope 43 is tightly attached to the outside of the easy-to-tear hole 5. Therefore, when the user needs to remove a section of the packaging film 3 for use, the pull tab 41 can be pulled to make the pull strip 44 drive the pull rope 43 to press the easy-to-tear hole 5 on the packaging film 3. Due to the arrangement of the easy-to-tear hole 5, the pull rope 43 can cut the packaging film 3. At this time, the insertion slot 22 and the insertion piece 23 on the protective film 21 will also be separated due to the cutting of the pull rope 43, so that the packaging film 3 can be easily taken. Compared with the traditional hard tearing or cutting with scissors, the packaging film 3 can be prevented from being deformed and damaged by pulling, and the convenience of use is improved.

[0044] Optionally, in some embodiments, referring to Figure 6 , the packaging film 3 includes a base material layer 32 made of polyethylene film material. The two sides of the base material layer 32 are respectively provided with a tensile layer 33 and a barrier layer 31. The tensile layer 33 is made of toughening material, and the barrier layer 31 is composed of ethylene-vinyl alcohol copolymer. The outer surfaces of the tensile layer 33 and the barrier layer 31 are provided with an antibacterial coating composed of silver ions.

[0045] The packaging film 3 in the scheme is mainly composed of a barrier layer 31, a substrate layer 32 and a tensile layer 33, wherein the substrate layer 32 is located between the barrier layer 31 and the tensile layer 33, the barrier layer 31 is made of ethylene-vinyl copolymer, has good thermal stability and has oxygen barrier property to a certain extent, is used to prevent external substances such as oxygen and water vapor from entering the packaging interior, prolongs the shelf life of food, the substrate layer 32 is made of polyethylene film material, polyethylene is a material commonly used in the packaging industry, has chemical stability, acid and alkali resistance and corrosion resistance, the tensile layer 33 is made of a toughening agent material, and the addition of an appropriate amount of toughening agent in the film production process can increase the tensile property of the packaging film 3, so that it is not easy to deform, and at the same time, an antibacterial coating is added on the outermost two layers of the packaging film 3, the tensile layer 33 and the barrier layer 31, the antibacterial coating is composed of silver ions, silver ions can destroy the cell membrane and cell wall of bacteria, interfere with the metabolic process of bacteria, and thus cause the death of bacteria, and this antibacterial mechanism makes silver ions become an effective antibacterial agent.

[0046] Working principle: when the packaging film 3 in the scheme is used, the easy-to-tear hole 5 on the packaging film 3 can be cut by the pulling rope 43 by pulling the pull piece 41 and making the pull strip 44 drive the pulling rope 43 to extrude the easy-to-tear hole 5, due to the setting of the easy-to-tear hole 5, the pulling rope 43 can cut the packaging film 3, at this time, the insertion slot 22 and the insertion piece 23 on the protective film 21 will be separated due to the cutting of the pulling rope 43, so that the packaging film 3 can be conveniently used, the insertion pieces 23 on both sides of the protective film 21 will form a jagged edge, which will make the insertion pieces 23 protrude from the edge of the packaging film 3, after the protective film 21 and the packaging film 3 are separated by pinching the insertion pieces 23, the protective film 2 is attached to the surface of the packaging film 3, so that the food packaging film forms an isolation layer on the surface of the packaging film 3 after being opened, preventing the antibacterial coating on the packaging film 3 from being contaminated by bacteria and dust in the external environment, and improving the antibacterial property when used.

Claims

1. An antibacterial food packaging film, comprising a take-up roll (1), characterized in that: The winding drum (1) is surrounded by a packaging film (3), and the outer end of the packaging film (3) is covered with multiple protective films (2). The outer end of the packaging film (3) has multiple sets of easy-tear mechanisms distributed at equal intervals. The easy-tear mechanism is composed of multiple easy-tear holes (5) distributed at equal intervals in a straight line. The outer end of the packaging film (3) is provided with multiple tearing components (4). The tearing assembly (4) includes a pull strip (44), which is attached to the outer end of the easy-tear hole (5). Both ends of the pull strip (44) are fixedly connected to a connecting strip (45), and the outer end of the connecting strip (45) is fixedly connected to a pull tab (41). The pull tab (41), the connecting strip (45) and the pull strip (44) are integrally formed.

2. The antibacterial food packaging film according to claim 1, characterized in that: The protective film (2) includes a protective film (21), which is made of biaxially oriented polypropylene film. Multiple insertion slots (22) are provided on both sides of the protective film (21) and are distributed at equal intervals. The multiple insertion slots (22) on both sides of the protective film (21) are staggered.

3. The antibacterial food packaging film according to claim 2, characterized in that: Multiple inserts (23) are fixedly connected to both sides of the protective film (21) and are distributed at equal intervals. The inserts (23) are adapted to the insertion groove (22). The multiple inserts (23) and the protective film (21) are integrally formed. The inserts (23) are tightly attached to the outer end of the easy-tear hole (5).

4. The antibacterial food packaging film according to claim 2, characterized in that: The connecting strip (45) and the pull tab (41) are both in close contact with the surface of the protective film (21). The outer end of the pull tab (41) is provided with a through hole (42), which is used to pick up the pull tab (41) and pull the pull bar (44).

5. The antibacterial food packaging film according to claim 4, characterized in that: The tearing assembly (4) also includes a pull cord (43), which is disposed at the outer end of the pull strip (44), the connecting strip (45) and the pull piece (41), and the pull cord (43) is in close contact with the outer surface of the packaging film (3).

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