High-toughness low-hydrophilicity pure nylon film structure

Abstract

The utility model discloses a pure nylon film structure with high toughness and low hydrophilicity, which comprises a base film, an extension layer, a buffer layer and a nano waterproof coating, the lower end face of the extension layer is fixedly connected with the upper end face of the base film, the lower end face of the buffer layer is fixedly connected with the upper end face of the extension layer, and the nano waterproof coating is arranged on the buffer layer. The lower end face of the nanometer waterproof coating is fixedly connected with the upper end face of the buffer layer, and the thickness of the buffer layer is larger than that of the bottom film. The utility model has the beneficial effects that the purposes of better blocking water vapor and reducing puncture injury of sharp objects can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field related to nylon films, in particular to a pure nylon film structure with high toughness and low hydrophilicity. Background Art

[0002] Nylon film (PA) is a very tough film with good transparency and gloss, high tensile strength and tensile strength, good resistance to heat, cold, oil, and organic solvents, excellent abrasion and puncture resistance, and is relatively soft and has excellent oxygen barrier properties. However, it has poor water vapor barrier properties, high moisture absorption and moisture permeability, and poor heat sealing properties. It is suitable for packaging rigid items such as greasy foods, meat products, fried foods, vacuum-packed foods, and steamed foods. However, due to its poor water vapor barrier properties, it often causes moisture to spoil foods. Moreover, existing nylon films are generally single-layered, making them easily punctured by sharp objects. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art in that it is not easy to block water vapor and cannot prevent puncture from sharp objects, and provides a high-toughness, low-hydrophilicity pure nylon film structure that can better block water vapor and reduce puncture damage from sharp objects.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A high-toughness, low-hydrophilicity pure nylon film structure comprises a base film, an extension layer, a buffer layer and a nano-waterproof coating. The lower end face of the extension layer is fixedly connected to the upper end face of the base film, the lower end face of the buffer layer is fixedly connected to the upper end face of the extension layer, the lower end face of the nano-waterproof coating is fixedly connected to the upper end face of the buffer layer, and the thickness of the buffer layer is greater than that of the base film.

[0006] When in use, the base film is used to wrap the items that need to be wrapped. The combination of the extension layer and the base film can better increase the ductility, and the combination of the extension layer and the buffer layer can increase the thickness of the film, making it difficult for sharp objects to pierce the film. The nano waterproof coating can make the more hydrophilic base film have a certain waterproof performance, thereby achieving the purpose of better blocking water vapor and reducing the puncture damage of sharp objects.

[0007] Preferably, the stretching layer is provided with a plurality of first convex ridges evenly distributed on the stretching layer, and the base film is provided with a plurality of second convex ridges evenly distributed on the base film, with the first convex ridges corresponding to the second convex ridges one to one. The lower end surface of the buffer layer is fixedly connected to the upper end surface of the first convex ridge. The first and second convex ridges are curved, allowing a given film area to have greater expansion space.

[0008] Preferably, the cross-sections of the first and second convex humps are both arc-shaped, with the curvature of the lower portion of the first convex hump greater than the curvature of the upper portion of the second convex hump. This allows for a certain amount of space between the first and second convex humps, which provides both heat preservation and cushioning against impact from sharp objects.

[0009] Preferably, a sealing layer 1 is provided on the lower end surface of the buffer layer, the upper end surface of the sealing layer 1 being fixedly connected to the lower end surface of the buffer layer, and the lower end surface of the sealing layer 1 being fixedly connected to the upper end surface of the convex hull 1. The sealing layer 1 creates a space between the upper end of the convex hull 1 and the upper end surface of the extension layer, thereby enhancing the cushioning effect.

[0010] Preferably, a second sealing layer is provided on the upper end surface of the buffer layer, the lower end surface of the second sealing layer is fixedly connected to the upper end surface of the buffer layer, and the upper end surface of the second sealing layer is fixedly connected to the lower end surface of the nano waterproof coating. The second sealing layer facilitates increasing the thickness of the buffer layer and enhancing the buffering effect.

[0011] Preferably, a plurality of plastic particles are disposed on the upper end surface of the second sealing layer, the plastic particles being evenly distributed thereon. The lower end surfaces of the plastic particles are fixedly connected to the upper end surface of the second sealing layer, and the upper end surfaces of the plastic particles are fixedly connected to the lower end surface of the nano-waterproof coating. The plastic particles can greatly enhance the firmness between the nano-waterproof coating and the second sealing layer, and the protrusions of the plastic particles also serve to provide a certain degree of hydrophobicity.

[0012] The beneficial effects of the present invention are: it can better block water vapor and reduce the puncture damage of sharp objects; the convex bulge 1 and the convex bulge 2 are arc-shaped, which can allow a certain area of ​​the film to have a larger extension space; the curvature of the lower side of the convex bulge 1 is greater than the curvature of the upper side of the convex bulge 2, so that there is a certain space between the convex bulge 1 and the convex bulge 2, which can both keep warm and buffer the extrusion of sharp objects; the sealing layer 1 can create another space between the upper end of the convex bulge 1 and the upper end surface of the extension layer, thereby improving the buffering effect; the sealing layer 2 facilitates increasing the thickness of the buffer layer and increasing the buffering effect; the plastic particles can greatly increase the firmness between the nano waterproof coating and the sealing layer 2, and the protrusions of the plastic particles are also intended to play a certain hydrophobic role. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a cross-sectional view of the main view of the present utility model;

[0015] Figure 3 yes Figure 2 Magnified view of detail A.

[0016] In the figure: 1. Base film, 2. Extension layer, 3. Buffer layer, 4. Nano-waterproof coating, 5. Sealing layer 1, 6. Sealing layer 2, 7. Plastic particles, 8. Bump 1, 9. Bump 2. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1 and Figure 2 In an embodiment, a high-toughness, low-hydrophilicity pure nylon film structure includes a base film 1, an extension layer 2, a buffer layer 3 and a nano-waterproof coating 4. The lower end surface of the extension layer 2 is fixedly connected to the upper end surface of the base film 1, the lower end surface of the buffer layer 3 is fixedly connected to the upper end surface of the extension layer 2, the lower end surface of the nano-waterproof coating 4 is fixedly connected to the upper end surface of the buffer layer 3, and the thickness of the buffer layer 3 is greater than the thickness of the base film 1.

[0019] like Figure 3 As shown, the extension layer 2 is provided with a plurality of convex hulls 8, which are evenly distributed on the extension layer 2, and the base film 1 is provided with a plurality of convex hulls 9, which are evenly distributed on the base film 1. The convex hulls 1 8 and the convex hulls 2 9 correspond one to one, and the lower end surface of the buffer layer 3 is fixedly connected to the upper end surface of the convex hull 1 8.

[0020] like Figure 3 As shown, the cross-sectional shapes of the convex hull 1 8 and the convex hull 2 ​​9 are both arc-shaped, and the curvature of the lower portion of the convex hull 1 8 is greater than the curvature of the upper portion of the convex hull 2 ​​9 .

[0021] like Figure 3 As shown, a sealing layer 5 is provided on the lower end surface of the buffer layer 3, the upper end surface of the sealing layer 5 is fixedly connected to the lower end surface of the buffer layer 3, and the lower end surface of the sealing layer 5 is fixedly connected to the upper end surface of the convex hull 8.

[0022] like Figure 3 As shown, a second sealing layer 6 is provided on the upper end surface of the buffer layer 3 , the lower end surface of the second sealing layer 6 is fixedly connected to the upper end surface of the buffer layer 3 , and the upper end surface of the second sealing layer 6 is fixedly connected to the lower end surface of the nano waterproof coating 4 .

[0023] like Figure 3 As shown, a number of plastic particles 7 are provided on the upper end surface of the second sealing layer 6, and the plastic particles 7 are evenly distributed on the upper end surface of the second sealing layer 6. The lower end surface of the plastic particles 7 is fixedly connected to the upper end surface of the second sealing layer 6, and the upper end surface of the plastic particles 7 is fixedly connected to the lower end surface of the nano waterproof coating 4.

[0024] When in use, the base film 1 is used to wrap the item to be wrapped. The convex bulge 8 on the extension layer 2 and the convex bulge 2 9 on the base film 1 can cooperate to better increase the ductility, increase the thickness and increase the cushioning performance. The convex bulge 8 on the extension layer 2 pushes up the sealing layer 5 on the buffer layer 3, which can increase the thickness of the film and make it difficult for sharp objects to pierce the film. The nano waterproof coating 4 can make the more hydrophilic base film have a certain waterproof performance, and the plastic particles 7 on the sealing layer 2 6 can greatly increase the firmness between the nano waterproof coating 4 and the sealing layer 2 6. In addition, the protrusions of the plastic particles 7 are also to play a certain hydrophobic role, thereby achieving the purpose of better blocking water vapor and reducing the puncture damage of sharp objects.

Claims

1. A high-toughness, low-hydrophilicity pure nylon film structure, characterized by: The invention comprises a base film (1), an extension layer (2), a buffer layer (3) and a nano waterproof coating (4), wherein the lower end surface of the extension layer (2) is fixedly connected to the upper end surface of the base film (1), the lower end surface of the buffer layer (3) is fixedly connected to the upper end surface of the extension layer (2), the lower end surface of the nano waterproof coating (4) is fixedly connected to the upper end surface of the buffer layer (3), the thickness of the buffer layer (3) is greater than the thickness of the base film (1), and the extension layer (2) is provided with a plurality of convex bumps (8). The convex hull 1 (8) is evenly distributed on the extension layer (2), and a plurality of convex hulls 2 (9) are provided on the base film (1). The convex hull 2 ​​(9) is evenly distributed on the base film (1). The convex hull 1 (8) and the convex hull 2 ​​(9) correspond to each other one by one. The lower end surface of the buffer layer (3) is fixedly connected to the upper end surface of the convex hull 1 (8). The cross-sectional shapes of the convex hull 1 (8) and the convex hull 2 ​​(9) are both arc-shaped, and the curvature of the lower side of the convex hull 1 (8) is greater than the curvature of the upper side of the convex hull 2 ​​(9).

2. The high-toughness, low-hydrophilicity pure nylon film structure according to claim 1, characterized in that: A sealing layer 1 (5) is provided on the lower end surface of the buffer layer (3), the upper end surface of the sealing layer 1 (5) is fixedly connected to the lower end surface of the buffer layer (3), and the lower end surface of the sealing layer 1 (5) is fixedly connected to the upper end surface of the convex hull 1 (8).

3. The high-toughness, low-hydrophilicity pure nylon film structure according to claim 1, characterized in that: A second sealing layer (6) is provided on the upper end surface of the buffer layer (3), the lower end surface of the second sealing layer (6) is fixedly connected to the upper end surface of the buffer layer (3), and the upper end surface of the second sealing layer (6) is fixedly connected to the lower end surface of the nano waterproof coating (4).

4. The high-toughness, low-hydrophilicity pure nylon film structure according to claim 3, characterized in that: A plurality of plastic particles (7) are provided on the upper end surface of the second sealing layer (6), and the plastic particles (7) are evenly distributed on the upper end surface of the second sealing layer (6). The lower end surface of the plastic particles (7) is fixedly connected to the upper end surface of the second sealing layer (6), and the upper end surface of the plastic particles (7) is fixedly connected to the lower end surface of the nano waterproof coating (4).

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