Cooking-resistant composite nylon packing material

Abstract

The utility model discloses a cooking-resistant composite nylon packing material which comprises a single-sided corona nylon film, a polypropylene film and a glue layer, the single-sided corona nylon film and the polypropylene film are compounded together through the glue layer, the cooking-resistant composite nylon packing material further comprises a double-sided corona single-layer nylon film, the double-sided corona single-layer nylon film is arranged between the single-sided corona nylon film and the polypropylene film, and the double-sided corona single-layer nylon film is arranged between the single-sided corona nylon film and the polypropylene film. A glue layer is arranged between the double-sided corona single-layer nylon film and the single-sided corona nylon film, and a glue layer is arranged between the double-sided corona single-layer nylon film and the polypropylene film. The packing material has the following beneficial effects that the double-sided corona single-layer nylon film only has one layer of nylon, and does not involve a multi-layer structure, so that the condition of surface peeling of the nylon film caused by abnormal strength of the three-layer structure is avoided under the condition of high-temperature cooking.

Description

Technical Field

[0001] The utility model relates to the field of packaging materials, in particular to a boiling-resistant composite nylon packaging material. Background Art

[0002] Nylon has excellent gas barrier properties and puncture resistance, and is widely used in various types of composite materials. Among them, the most widely used is as the middle layer of the cooking bag. This structure is commonly: single corona nylon film layer / double corona three-layer nylon film layer / RCPP (cooking polypropylene film), and is compounded with a cooking-grade adhesive. The three-layer nylon film used here is a three-layer co-extruded nylon film, specifically a middle core layer and two functional layers on both sides (the corona layer is located on the functional layer). This structure faces the problem of low strength between the layers of the three-layer nylon film, and it is easy for the interlayer strength of the nylon film core layer and the functional layer to not match the composite strength of the functional layer and the adhesive layer, which causes the corona layer on the functional layer of the three-layer nylon film to easily detach and adhere to the adhesive, which will cause the nylon film to peel off, resulting in the peel strength on both sides not meeting the standard, so that after cooking, the interlayer delamination problem occurs, affecting the overall packaging effect. Utility Model Content

[0003] In view of the above problems, the utility model provides a cooking-resistant composite nylon packaging material.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A cooking-resistant composite nylon packaging material comprises a single-sided corona nylon film, a polypropylene film and a glue layer, wherein the single-sided corona nylon film layer and the polypropylene film layer are composited together through the glue layer, and further comprises a double-sided corona single-layer nylon film, wherein the double-sided corona single-layer nylon film is arranged between the single-sided corona nylon film and the polypropylene film, a glue layer is arranged between the double-sided corona single-layer nylon film and the single-sided corona nylon film, and a glue layer is arranged between the double-sided corona single-layer nylon film and the polypropylene film.

[0006] In this composite nylon packaging material, a double-sided corona single-layer nylon film is composited with a single-sided corona nylon film and a polypropylene film. Since a double-sided corona single-layer nylon film is used, the double-sided corona single-layer nylon film has only one layer of nylon and does not involve a multi-layer structure itself. Under high-temperature cooking conditions, the nylon film is prevented from peeling off due to the abnormal strength of the three-layer structure itself.

[0007] Optionally, the thickness of the single-sided corona nylon film is 15 um.

[0008] Optionally, the thickness of the double-sided corona single-layer nylon film is 15 um.

[0009] Optionally, the thickness of the polypropylene film is 70 um.

[0010] Optionally, the thickness of the glue layer is 4 um.

[0011] Optionally, the glue layer is a two-component polyurethane glue layer.

[0012] The beneficial effects of the utility model are as follows: the double-sided corona single-layer nylon film has only one layer of nylon and does not involve a multi-layer structure itself. Under high-temperature cooking conditions, the nylon film is prevented from peeling off due to the abnormal strength of the three-layer structure itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the retort-resistant composite nylon packaging material.

[0014] The reference numerals in the figures are: 1. single-sided corona nylon film; 2. double-sided corona single-layer nylon film; 3. polypropylene film; 4. polyurethane glue layer. DETAILED DESCRIPTION

[0015] The utility model is described in detail below in conjunction with the accompanying drawings.

[0016] As attached Figure 1 As shown, a cooking-resistant composite nylon packaging material includes a single-sided corona nylon film 1, a polypropylene film 3 and a glue layer. The single-sided corona nylon film 1 and the polypropylene film 3 are composited together through the glue layer. It also includes a double-sided corona single-layer nylon film 2. The double-sided corona single-layer nylon film 2 is arranged between the single-sided corona nylon film 1 and the polypropylene film 3. A glue layer is arranged between the double-sided corona single-layer nylon film 2 and the single-sided corona nylon film 1, and a glue layer is arranged between the double-sided corona single-layer nylon film 2 and the polypropylene film 3.

[0017] In this composite nylon packaging material, a double-sided corona single-layer nylon film 2 is composited with a single-sided corona nylon film 1 and a polypropylene film 3. Since the double-sided corona single-layer nylon film 2 is used, the double-sided corona single-layer nylon film 2 has only one layer of nylon and does not contain a multi-layer structure. Under high-temperature cooking conditions, the nylon film is prevented from peeling off due to the abnormal strength of the three-layer structure itself.

[0018] As attached Figure 1 As shown, the thickness of the single-sided corona nylon film 1 is 15 um.

[0019] As attached Figure 1 As shown, the thickness of the double-sided corona single-layer nylon film 2 is 15 um.

[0020] As attached Figure 1 As shown, the thickness of the polypropylene film 3 is 70 um.

[0021] As attached Figure 1 As shown, the thickness of the glue layer is 4um.

[0022] As attached Figure 1 As shown, the glue layer is a two-component polyurethane glue layer 4.

[0023] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent transformations made using the contents of the present invention specification, directly or indirectly used in other related technical fields, are also included in the protection scope of the present invention.

Claims

1. A cooking-resistant composite nylon packaging material, comprising a single-sided corona nylon film, a polypropylene film and a glue layer, wherein the single-sided corona nylon film layer and the polypropylene film layer are composited together through the glue layer, characterized in that: It also includes a double-sided corona single-layer nylon film, which is arranged between the single-sided corona nylon film and the polypropylene film, a glue layer is arranged between the double-sided corona single-layer nylon film and the single-sided corona nylon film, and a glue layer is arranged between the double-sided corona single-layer nylon film and the polypropylene film.

2. The retort-resistant composite nylon packaging material according to claim 1, characterized in that: The thickness of the single-sided corona nylon film is 15 um.

3. The retort-resistant composite nylon packaging material according to claim 1, characterized in that: The thickness of the double-sided corona single-layer nylon film is 15 um.

4. The retort-resistant composite nylon packaging material according to claim 1, characterized in that: The thickness of the polypropylene film is 70 um.

5. The retort-resistant composite nylon packaging material according to claim 1, characterized in that: The thickness of the glue layer is 4um.

6. The retort-resistant composite nylon packaging material according to claim 1, characterized in that: The glue layer is a two-component polyurethane glue layer.

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