Antibacterial degradable functional film

Abstract

The utility model relates to the technical field of films, in particular to an antibacterial degradable functional film, which comprises a film body, the film body comprises a wear-resistant layer, a first joining layer, a transition layer, an antibacterial layer, a second joining layer and a lining layer, the wear-resistant layer and the joining layer are mutually adhered, the joining layer and the transition layer are mutually adhered, the antibacterial layer is coated on the transition layer, and the lining layer is coated on the antibacterial layer. A second connecting layer is adhered to the antibacterial layer, and a lining layer is adhered to the second connecting layer. Through the combination of the wear-resistant layer, the transition layer and the lining layer, when food is temporarily packaged and carried, the tensile strength of the whole film material can be guaranteed, the anti-puncture condition is reduced, and when the food is packaged and carried, external bacteria can be prevented from invading into the whole film layer group from cracks generated outside the film through the antibacterial layer, so that the food packaging effect is improved. Therefore, the food is quickly rotted.

Description

Technical Field

[0001] The utility model relates to the technical field of films, in particular to an antibacterial and degradable functional film. Background Art

[0002] A film is a thin, soft, transparent sheet made of plastic, adhesive, rubber or other materials. The scientific explanation of a film is a two-dimensional material formed by the deposition of atoms, molecules or ions on the surface of a substrate.

[0003] For example, optical films, composite films, superconducting films, polyester films, nylon films, plastic films, etc. Films are widely used in electronics, machinery, printing and other industries.

[0004] Thin film materials refer to thin metal or organic layers with thickness ranging from single atoms to several millimeters. Electronic semiconductor functional devices and optical coatings are the main applications of thin film technology.

[0005] Classification by film forming method:

[0006] There are films that are plasticized by extrusion and then blown into shape, which are called blown films;

[0007] The film that is plasticized by extrusion and then cast from the die is called cast film.

[0008] The film made by rolling plasticized raw materials by several rollers on a calender is called calendered film.

[0009] Degradable films not only have the functions and characteristics of traditional plastics, but also can be broken down and degraded in the natural environment through the action of microorganisms in the soil and water or through the action of ultraviolet rays in the sun after reaching the end of their service life, and finally re-enter the ecological environment in a restored form and return to nature.

[0010] At present, most functional films have a single structure. When some foods are temporarily packaged and carried, the overall tensile strength is low. At the same time, after the film is packaged, the resistance to external bacterial invasion is weak. Therefore, it is necessary to improve the strength of this type of film to meet its use requirements. Utility Model Content

[0011] The utility model aims to provide an antibacterial and degradable functional film to solve the problem that ordinary temporary packaging films have low tensile strength and weak resistance to external bacterial invasion.

[0012] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an antibacterial and degradable functional film, comprising a film body, wherein the film body comprises a wear-resistant layer, a first connecting layer, a transition layer, an antibacterial layer, a second connecting layer and an inner lining layer, the wear-resistant layer and the first connecting layer are bonded to each other, the first connecting layer and the transition layer are bonded to each other, the antibacterial layer is coated on the transition layer, the second connecting layer is bonded to the antibacterial layer, and the inner lining layer is bonded to the second connecting layer.

[0013] Preferably, the wear-resistant layer is made of environmentally degradable polyethylene film material.

[0014] Preferably, the first connecting layer and the second connecting layer are both made of hot melt adhesive material.

[0015] Preferably, the transition layer is made of a water-soluble film material.

[0016] Preferably, the antibacterial layer is made of antibacterial material.

[0017] Preferably, the lining layer is made of edible film material.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model uses a three-layer combination of a wear-resistant layer, a transition layer and an inner lining layer to ensure the tensile strength of the entire film material and reduce the occurrence of puncture resistance when food is temporarily packed and carried.

[0020] 2. The utility model can prevent external bacteria from invading the interior of the entire film layer group through cracks generated on the outside of the film when packaging food, thereby causing the food to spoil quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model.

[0023] In the figure: 1, film body; 10, wear-resistant layer; 11, first connecting layer; 12, transition layer; 13, antibacterial layer; 14, second connecting layer; 15, lining layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example I

[0026] See also Figure 1-Figure 2 , an antibacterial and degradable functional film, including a film body 1, characterized in that: the film body 1 includes a wear-resistant layer 10, a first connecting layer 11, a transition layer 12, an antibacterial layer 13, a second connecting layer 14 and an inner lining layer 15, the wear-resistant layer 10 and the first connecting layer 11 are bonded to each other, the first connecting layer 11 and the transition layer 12 are bonded to each other, the antibacterial layer 13 is coated on the transition layer 12, the second connecting layer 14 is bonded to the antibacterial layer 13, and the inner lining layer 15 is bonded to the second connecting layer 14.

[0027] Furthermore, the wear-resistant layer 10 is made of environmentally degradable polyethylene film material, which is a type of plastic that degrades when exposed to natural environmental conditions and the combined effects of light, heat, water, oxygen, pollutants, microorganisms, insects, wind, sand, rain and mechanical forces.

[0028] Furthermore, the first connecting layer 11 and the second connecting layer 14 are both made of hot melt adhesive material. EVA hot melt adhesive is a solid fusible polymer that does not require solvents and does not contain 100% water. It is solid at room temperature and becomes a flowable liquid with a certain viscosity when heated and melted to a certain temperature. The melted EVA hot melt adhesive is light brown or white. The EVA hot melt adhesive is composed of basic resin, tackifier, viscosity regulator and antioxidant and other ingredients.

[0029] Furthermore, the transition layer 12 is made of a water-soluble film material. A water-soluble film refers to a film that can dissolve in water at room temperature. As a novel green packaging material, it is widely used in Europe, America, Japan and other countries for packaging of various products, such as pesticides, fertilizers, pigments, dyes, detergents, water treatment agents, mineral additives, detergents, concrete additives, chemical reagents for photography and chemical reagents for gardening care.

[0030] Water-soluble films have been widely valued by developed countries in the world due to their environmentally friendly characteristics such as complete degradation, safe and convenient use, etc. Among them, the water-soluble film with the best solubility is polyethylene oxide film.

[0031] Furthermore, the antibacterial layer 13 is made of antibacterial material, and the antibacterial packaging film is an antibacterial packaging material made by adding a certain amount of antibacterial agent to food packaging material. There are many methods for preparing antibacterial food packaging film. One is to make the antibacterial agent into an antibacterial masterbatch, and prepare it by extruding or drooling the antibacterial agent or antibacterial masterbatch and resin single layer, or by co-extruding it as a surface layer and other layers to form an antibacterial composite film. Another method is to obtain it by coating or vapor-depositing the antibacterial agent on a resin film. This scheme adopts the latter.

[0032] Furthermore, the inner lining layer 15 is made of edible film material, edible packaging film, such as chitosan edible packaging film, corn protein packaging film, modified cellulose edible packaging film and composite edible packaging film, etc., which can be used for inner packaging of various foods.

[0033] When this embodiment is in use, the three-layer combination of the wear-resistant layer 10, the transition layer 12 and the lining layer 15 can ensure the tensile strength of the entire film material and reduce the occurrence of puncture resistance when the food is temporarily packed and carried.

[0034] The antibacterial layer 13 can prevent external bacteria from invading the interior of the entire film layer group through cracks generated on the outside of the film when packaging food, thereby causing the food to spoil quickly.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An antibacterial and degradable functional film, comprising a film body (1), Features: The film body (1) comprises a wear-resistant layer (10), a first connecting layer (11), a transition layer (12), an antibacterial layer (13), a second connecting layer (14) and an inner lining layer (15); the wear-resistant layer (10) and the first connecting layer (11) are bonded to each other, the first connecting layer (11) and the transition layer (12) are bonded to each other, the antibacterial layer (13) is coated on the transition layer (12), the second connecting layer (14) is bonded to the antibacterial layer (13), and the inner lining layer (15) is bonded to the second connecting layer (14); the wear-resistant layer (10) is made of an environmentally degradable polyethylene film material; the first connecting layer (11) and the second connecting layer (14) are both made of a hot-melt adhesive material; the transition layer (12) is made of a water-soluble film material; the antibacterial layer (13) is made of an antibacterial agent material; and the inner lining layer (15) is made of an edible film material.

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