Degradable electronic product packaging film

Abstract

The utility model discloses a degradable electronic product packaging film. The degradable electronic product packaging film comprises a first degradable layer, a filler layer, a second degradable layer and a light blocking layer, the filler layer is stacked on the upper surface of the first degradable layer; the second degradable layer is stacked on the upper surface of the filler layer; and a plurality of convex parts are convexly arranged on the upper surface of the light blocking layer. The first reinforcing piece and the second reinforcing piece are arranged in the first degradable layer and the second degradable layer correspondingly, the strength of the packaging film is effectively improved, the groove position is formed in the upper surface of the second degradable layer in a rolling mode, the water absorption piece is arranged in the groove position, the water absorption piece absorbs water passing through the light blocking layer, and therefore the light blocking effect is improved. According to the packaging film, the two degradable layers are arranged to prevent the two degradable layers from being affected with damp and degraded in advance, the light blocking layer is arranged to effectively prevent the formation of a strong light condition, and the surfaces of the plurality of convex parts are coated with the reflective films to reflect most of light and reduce the heat absorption of the packaging film, so that the formation of a high-temperature condition is avoided, and the two degradable layers are effectively prevented from being degraded in advance.

Description

Technical Field

[0001] This utility model relates to the field of packaging film technology, and in particular to a biodegradable packaging film for electronic products. Background Technology

[0002] Packaging film refers to films used for packaging goods, primarily food, pharmaceuticals, and textiles. Packaging films are mainly made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other thermoplastic resins. However, these plastic films are not easily decomposed, causing significant environmental pollution. Therefore, biodegradable plastic films have emerged as a result.

[0003] Biodegradable films possess the functions and properties of traditional plastics, and after reaching their lifespan, they can degrade naturally in the environment through the action of microorganisms in soil and water or through the action of ultraviolet rays in sunlight, ultimately returning to the ecosystem in a reduced form. However, existing biodegradable films are relatively weak and have high air permeability, resulting in poor moisture resistance. They are prone to premature degradation when exposed to moisture, and strong light and high temperatures can also cause premature degradation, affecting their performance and hindering their widespread application. Therefore, it is necessary to improve existing biodegradable films. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a biodegradable packaging film for electronic products, which can effectively solve the problems of existing biodegradable films having weak strength, poor moisture-proof effect, and being prone to premature degradation under conditions of moisture, strong light, and high temperature.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A biodegradable packaging film for electronic products includes a first biodegradable layer, a filler layer, a second biodegradable layer, and a light-blocking layer. The first biodegradable layer contains a first reinforcing member. The filler layer is stacked on the upper surface of the first biodegradable layer. The second biodegradable layer is stacked on the upper surface of the filler layer, contains a second reinforcing member, and has grooves formed on its upper surface by roll forming, with water-absorbing members disposed within these grooves. The light-blocking layer is bonded to the upper surface of the second biodegradable layer with adhesive. The upper surface of the light-blocking layer has multiple protrusions, each covered with a reflective film. These protrusions reflect high-heat sunlight away from the packaging film, thereby reducing heat absorption by the packaging film.

[0007] As a preferred embodiment, both the first and second biodegradable layers are polylactic acid (PLA) layers.

[0008] As a preferred embodiment, both the first and second reinforcing members are wavy to further enhance the strength of the packaging film.

[0009] As a preferred option, both the first and second reinforcing members are made of PLC material. PLC material not only has excellent elasticity, but is also a biodegradable material, making it more environmentally friendly.

[0010] As a preferred embodiment, the absorbent element is a hydrogel. The hydrogel can absorb a large amount of water without dissolving, thus preventing the amphiphilic layer from degrading prematurely. When the packaging film is used up, it will eventually be sent to a landfill for disposal. The soil in the landfill is relatively moist, and the hydrogel will absorb the maximum amount of water it can absorb in a short period of time. Subsequently, the water in the soil can remain inside the packaging film for a long time, causing the amphiphilic layer to degrade rapidly.

[0011] As a preferred embodiment, the light-blocking layer is bonded to the upper surface of the second biodegradable layer using solvent-free adhesive.

[0012] As a preferred embodiment, the light-blocking layer is filled with ultraviolet-absorbing particles to further absorb ultraviolet light, prevent the two biodegradable layers from degrading prematurely, and extend the service life of the packaging film.

[0013] As a preferred embodiment, all of the plurality of protrusions are hemispherical.

[0014] As a preferred embodiment, the thickness ratio of the first biodegradable layer to the second biodegradable layer is 1:(1.2-1.8).

[0015] As a preferred embodiment, the lower surface of the first biodegradable layer is provided with a biodegradable pressure-sensitive adhesive.

[0016] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0017] By providing a first reinforcing member and a second reinforcing member in the first and second biodegradable layers respectively, the strength of the packaging film is effectively improved. In addition, grooves are formed on the upper surface of the second biodegradable layer by rolling, and water-absorbing members are provided in the grooves. The water-absorbing members absorb the moisture passing through the light-blocking layer, preventing the two biodegradable layers from getting damp and degrading prematurely. Furthermore, the light-blocking layer can effectively prevent the formation of strong light conditions, and the surfaces of multiple protrusions are covered with reflective film, which reflects most of the light and reduces the absorption of heat by the packaging film, thereby avoiding the formation of high-temperature conditions and effectively preventing the two biodegradable layers from degrading prematurely.

[0018] To more clearly illustrate the structural features and effects of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments: Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of a preferred embodiment of the present invention.

[0020] Explanation of reference numerals in the attached diagram:

[0021] 10. First biodegradable layer; 11. First reinforcing member

[0022] 20. Filler layer; 30. Second biodegradable layer

[0023] 31. Second reinforcing member; 32. Slot.

[0024] 33. Water-absorbing component; 40. Light-blocking layer

[0025] 41. Projection 42. Reflective film

[0026] 43. Ultraviolet absorbing particles; 50. Pressure-sensitive adhesive. Detailed Implementation

[0027] Please refer to Figure 1 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a first biodegradable layer 10, a filler layer 20, a second biodegradable layer 30, and a light-blocking layer 40.

[0028] The first biodegradable layer 10 is provided with a first reinforcing member 11; in this embodiment, the first biodegradable layer 10 is a polylactic acid layer; the first reinforcing member 11 is wavy, which further enhances the strength of the packaging film, and the first reinforcing member 11 is made of PCL material. PLC material not only has excellent elasticity, but is also a biodegradable material, which is more environmentally friendly; and, the lower surface of the first biodegradable layer 10 is provided with biodegradable pressure-sensitive adhesive 50.

[0029] The filler layer 20 is stacked on the upper surface of the first biodegradable layer 10. The filler layer 10 is any one of nano-calcium carbonate, nano-silica, nano-talc powder, and nano-alumina coating. It isolates some oxygen and moisture to prevent the two biodegradable layers from degrading at the same time.

[0030] The second biodegradable layer 30 is stacked on the upper surface of the filler layer 20. A second reinforcing member 31 is provided within the second biodegradable layer 30, and grooves 32 are formed on the upper surface of the second biodegradable layer 30 by roll forming. Water-absorbing members 33 are provided within the grooves 32. In this embodiment, the second biodegradable layer 30 is a polylactic acid (PLA) layer, and the second reinforcing member 31 is wavy to further enhance the strength of the packaging film. The second reinforcing member 31 is made of PCL material, which not only has excellent elasticity but is also a biodegradable material. The material is more environmentally friendly; in addition, the water-absorbing component 33 is a hydrogel, which can absorb more water without dissolving, thus preventing the two biodegradable layers from degrading prematurely. When the packaging film is used up, it will eventually be sent to a landfill. The soil in the landfill is relatively moist, and the hydrogel will absorb the maximum amount of water it can absorb in a short time. Subsequently, the water in the soil can remain in the packaging film for a long time, causing the two biodegradable layers to degrade quickly; the thickness ratio of the first biodegradable layer 10 and the second biodegradable layer 30 is 1:(1.2-1.8).

[0031] The light-blocking layer 40 is bonded to the upper surface of the second biodegradable layer 30 with adhesive. The upper surface of the light-blocking layer 40 has a plurality of protrusions 41, and the surface of each of the plurality of protrusions 41 is covered with a reflective film 42. The plurality of protrusions 41 can reflect high-heat sunlight to a position away from the packaging film, thereby reducing the heat absorption of the packaging film. In this embodiment, the light-blocking layer 40 is bonded to the upper surface of the second biodegradable layer 30 with solvent-free adhesive. The light-blocking layer 40 is filled with ultraviolet absorbing particles 43 to further absorb ultraviolet rays, prevent the two biodegradable layers from degrading prematurely, and extend the service life of the packaging film. Moreover, the plurality of protrusions 41 are all hemispherical.

[0032] The key design features of this invention are as follows: by providing a first reinforcing member and a second reinforcing member in the first and second biodegradable layers respectively, the strength of the packaging film is effectively improved. Furthermore, grooves are formed on the upper surface of the second biodegradable layer by rolling, and water-absorbing members are provided in the grooves. The water-absorbing members absorb the moisture passing through the light-blocking layer, preventing the two biodegradable layers from becoming damp and degrading prematurely. In addition, the light-blocking layer can effectively prevent the formation of strong light conditions, and the surfaces of multiple protrusions are covered with reflective film, which reflects most of the light and reduces the absorption of heat by the packaging film, thereby avoiding the formation of high-temperature conditions and effectively preventing the premature degradation of the two biodegradable layers.

[0033] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A degradable electronic product packaging film, characterized by: The application relates to a light-blocking layer, which comprises a first degradable layer, a filler layer, a second degradable layer and a light-blocking layer; the first degradable layer is internally provided with a first reinforcing member; the filler layer is stacked on the upper surface of the first degradable layer; the second degradable layer is stacked on the upper surface of the filler layer, the second degradable layer is internally provided with a second reinforcing member, and a groove is formed on the upper surface of the second degradable layer by rolling; a water-absorbing member is arranged in the groove; the light-blocking layer is fixed on the upper surface of the second degradable layer by means of solvent-free glue, the upper surface of the light-blocking layer is provided with a plurality of convex parts, and the surfaces of the plurality of convex parts are all coated with a reflective film.

2. The degradable electronic product packaging film according to claim 1, characterized in that: The first degradable layer and the second degradable layer are both polylactic acid layers.

3. The degradable electronic product packaging film according to claim 1, characterized in that: The first reinforcing member and the second reinforcing member are both wavy.

4. The degradable electronic product packaging film according to claim 1, characterized in that: The first reinforcing member and the second reinforcing member are both made of PCL.

5. The degradable electronic product packaging film according to claim 1, wherein: The water-absorbing member is a hydrogel.

6. The degradable electronic product packaging film according to claim 1, wherein: The light-blocking layer is filled with ultraviolet-absorbing particles.

7. The degradable electronic product packaging film according to claim 1, wherein: The plurality of convex parts are all hemispherical.

8. The degradable electronic product packaging film according to claim 1, wherein: The thickness ratio of the first degradable layer to the second degradable layer is 1: (1.2-1.8).

9. The degradable electronic product packaging film according to claim 1, wherein: The lower surface of the first degradable layer is provided with degradable pressure-sensitive glue.

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