High-barrier tensile film for packaging bag

Abstract

The utility model relates to the related field of packaging bags, in particular to a high-barrier tensile film for a packaging bag, which comprises a film substrate, a ceramic coating, an EVA (ethylene vinyl acetate) layer, a nylon layer, an elastic tensile layer, a nano zinc oxide layer, a hydrophobic layer and the like. According to the packaging film, the nylon layer is arranged and has good mechanical performance, the tensile strength and toughness of the packaging film can be remarkably improved, the elasticity of the packaging film is improved through the elastic tensile layer, the tensile effect of the packaging film is further improved, and the situation that the service life of the packaging film is shortened due to the fact that the packaging film is damaged by external acting force is reduced; external rainwater is difficult to attach to the packaging film through the arranged hydrophobic layer, the situation that rainwater permeates through the packaging film and erodes a product is reduced, the damping effect of the packaging film is improved through the arranged EVA layer, damping protection can be provided for the product through the packaging film, damage to the product due to collision with an external object is reduced, and the service life of the product is prolonged. The product protection effect of the packaging film is improved, and the practicability of the packaging film is improved.

Description

Technical Field

[0001] The utility model relates to the field of packaging bags, in particular to a high-barrier and tensile-resistant film for packaging bags. Background Art

[0002] Packaging bags refer to bags used to package various supplies, which make it convenient to transport and store goods during the production and circulation process. They are usually made of paper, plastic, cloth, composite materials or other flexible materials. Some existing packaging bags are made of various plastic film materials. Packaging bags made of film are widely used in food, medicine, daily necessities, electronic products and other fields because of their light weight, high cost-effectiveness, strong plasticity and good protective performance.

[0003] The existing packaging bag film has poor tensile and barrier effects, and is easily broken by external forces, thereby reducing the service life of the packaging film. In addition, rainwater can easily penetrate the packaging film and corrode the product. The existing packaging film is difficult to provide shock-absorbing protection for the product, and the product is easily damaged by collision with external objects due to bumps and vibrations during transportation, which reduces the protective effect of the packaging film on the product and reduces the practicality of the packaging film. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a high barrier and tensile film for packaging bags to solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high barrier and tensile film for packaging bags, comprising a film substrate, the top of which is provided with a ceramic coating and an EVA layer in sequence from bottom to top, and the bottom of which is provided with a nylon layer, an elastic tensile layer, a nano zinc oxide layer and a hydrophobic layer in sequence from top to bottom;

[0006] The elastic tensile layer is formed by overlapping and weaving a plurality of transverse polyurethane strips and a plurality of longitudinal polyurethane strips.

[0007] Preferably, the top surface of the EVA layer is provided with a plurality of hollow convex bodies, the hollow convex bodies are in the shape of arcs protruding outward, and the hollow convex bodies on the EVA layer are distributed at equal intervals.

[0008] Preferably, a plurality of protrusions are provided on the nylon layer, and grooves corresponding to the protrusions are provided on the bottom end surface of the film substrate, so that the protrusions are embedded in the grooves.

[0009] Preferably, a plurality of ceramic micro-beads are embedded in the nylon layer, and the ceramic micro-beads and the protrusions are distributed alternately.

[0010] Preferably, the hydrophobic layer is made of polytetrafluoroethylene.

[0011] Beneficial effects of the utility model:

[0012] The utility model provides a nylon layer with good mechanical properties, which can significantly improve the tensile strength and toughness of the packaging film, while the elastic tensile layer improves the elasticity of the packaging film, further improves the tensile effect of the packaging film, reduces the service life of the packaging film reduced by damage to the packaging film due to external forces, and the provided hydrophobic layer makes it difficult for external rainwater to adhere to the packaging film, reduces the erosion of products by rainwater passing through the packaging film, and the provided EVA layer improves the shock absorption effect of the packaging film, which is beneficial for the packaging film to provide shock absorption protection for the product, reduces the damage of the product due to collision with external objects, improves the protection effect of the packaging film on the product, and improves the practicability of the packaging film. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the elastic tensile layer structure of the utility model.

[0015] Among them: film substrate-1, ceramic coating-2, EVA layer-3, hollow convex body-4, nylon layer-5, elastic tensile layer-6, nano zinc oxide layer-7, hydrophobic layer-8, ceramic micro beads-9, convex body-10, groove-11, transverse polyurethane strip-12, longitudinal polyurethane strip-13. DETAILED DESCRIPTION

[0016] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0017] like Figure 1 As shown, the utility model provides a high barrier and tensile film for packaging bags, comprising a film substrate 1;

[0018] like Figure 1 and Figure 2 As shown, in this embodiment, the top of the film substrate 1 is sequentially adhered and fixed with a ceramic coating 2 and an EVA layer 3 from bottom to top, and the bottom of the film substrate 1 is sequentially adhered and fixed with a nylon layer 5, an elastic tensile layer 6, a nano zinc oxide layer 7 and a hydrophobic layer 8 from top to bottom;

[0019] The elastic tensile layer 6 is formed by overlapping and weaving a plurality of transverse polyurethane strips 12 and a plurality of longitudinal polyurethane strips 13, which improves the elasticity of the packaging film and is beneficial to improving the tensile performance of the packaging film.

[0020] In this embodiment, the top surface of the EVA layer 3 is provided with a plurality of hollow convex bodies 4, the hollow convex bodies 4 are in an arc shape protruding outward, and the hollow convex bodies 4 on the EVA layer 3 are distributed at equal intervals, so as to absorb and disperse the external impact force, further improve the buffering effect of the EVA layer 3, and improve the protection effect of the packaged product;

[0021] In this embodiment, a plurality of protrusions 10 are provided on the nylon layer 5, and a groove 11 corresponding to the protrusion 10 is provided on the bottom end surface of the film substrate 1, so that the protrusion 10 is embedded in the groove 11, and the stability of the connection between the nylon layer 5 and the film substrate 1 is improved by the protrusion 10 and the groove 11, thereby improving the stability of the packaging film as a whole;

[0022] In this embodiment, a plurality of ceramic micro-beads 9 are embedded in the nylon layer 5, and the ceramic micro-beads 9 and the protrusions 10 are staggered, which is beneficial for the packaging film to resist the penetration of sharp objects and improve the service life of the packaging film;

[0023] In this embodiment, the hydrophobic layer 8 is made of polytetrafluoroethylene, which is beneficial to improving the hydrophobic effect of the packaging film, reducing the adhesion of rainwater to the packaging film, and improving the barrier effect of the packaging film on rainwater;

[0024] Specifically, when in use, the nylon layer 5 is arranged in the packaging film, and the nylon layer 5 has high tensile strength, so that the packaging film as a whole has high tensile strength, and the elastic tensile layer 6 woven by the transverse polyurethane strips 12 and the longitudinal polyurethane strips 13 improves the elasticity of the packaging film, which is conducive to further improving the tensile effect of the packaging film, reducing the damage of the packaging film due to external forces, and improving the service life of the packaging film;

[0025] The nano zinc oxide layer 7 can effectively absorb and scatter ultraviolet rays, effectively prevent ultraviolet rays from penetrating the packaging film, reduce product deterioration or color change, and maintain the original quality of the product. The ceramic coating 2 can effectively block oxygen, water vapor, etc., and improve the barrier protection effect of the film on the product. The EVA layer 3 provides a shock-absorbing protection effect of the packaging film on the product, reduces damage to the product due to collision with external objects, and improves the protection effect of the packaging film on the product.

[0026] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high barrier and tensile film for packaging bags, comprising a film substrate; It is characterized in that The top of the film substrate is provided with a ceramic coating and an EVA layer in sequence from bottom to top, and the bottom of the film substrate is provided with a nylon layer, an elastic tensile layer, a nano zinc oxide layer and a hydrophobic layer in sequence from top to bottom; The elastic tensile layer is formed by overlapping and weaving a plurality of transverse polyurethane strips and a plurality of longitudinal polyurethane strips.

2. The high barrier and tensile film for packaging bags according to claim 1, characterized in that: The top surface of the EVA layer is provided with a plurality of hollow convex bodies, the hollow convex bodies are in an arc shape protruding outwards, and the hollow convex bodies on the EVA layer are distributed at equal intervals.

3. The high barrier and tensile film for packaging bags according to claim 1, characterized in that: The nylon layer is provided with a plurality of protrusions, and the bottom end surface of the film substrate is provided with grooves corresponding to the protrusions, so that the protrusions are embedded in the grooves.

4. The high barrier and tensile film for packaging bags according to claim 3, characterized in that: A plurality of ceramic micro-beads are embedded in the nylon layer, and the ceramic micro-beads and the convex bodies are distributed alternately.

5. The high barrier and tensile film for packaging bags according to claim 1, characterized in that: The hydrophobic layer is made of polytetrafluoroethylene.

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