Multilayer composite label

Abstract

The utility model discloses a multi-layer composite label which comprises a base film with a first surface and a second surface. The first surface of the base film is provided with a printed pattern, and the second surface of the base film is compounded with a first transparent aramid nanofiber aerogel film through a flame-retardant adhesive; a second transparent aramid nanofiber aerogel film is adhered to the surface of the printed pattern; and release paper is compounded on one side, far away from the base film, of the first transparent aramid nanofiber aerogel film through a flame-retardant adhesive. According to the multilayer composite label disclosed by the utility model, a printed pattern can be ensured to be clear and visible through the transparent aramid nano aerogel film. The aramid nano aerogel film has excellent optical properties, the ultraviolet light transmittance is almost zero, the aramid nano aerogel film has good bendability and adhesion, and the aerogel structure also has a good heat insulation effect, so that the influence of heat on printed patterns is avoided.

Description

Technical Field

[0001] The utility model relates to a multi-layer composite label, belonging to the technical field of labels, in particular to a multi-layer label which can be used as an identification label and has a good flame retardant effect. Background Art

[0002] Labels are concise signs used to indicate the name, weight, volume, purpose, and other information of an item. There are traditional printed labels and modern barcode printed labels. Existing labels use adhesive on one side for adhesion and fixation. They are especially used in many occasions that require flame retardancy, such as cables, printed circuit boards (PCBs) or printed wiring boards (PWBs) and batteries, as well as online barcodes and other labeling systems used to improve process inventory (inventory) and quality control. In particular, some long-term exposure to outdoor conditions also requires labels with good UV protection. How to prepare a multi-layer composite label that can be suitable for flame retardant and UV-resistant application scenarios. Utility Model Content

[0003] The purpose of the utility model is to provide a multi-layer composite label with good flame retardant and UV resistance effects.

[0004] In order to solve the above technical problems, the purpose of this utility model is achieved as follows:

[0005] The utility model relates to a multi-layer composite label, comprising a base film having a first surface and a second surface; the base film is provided with a printed pattern on the first surface, and a first transparent aramid nanofiber aerogel film is composited with a flame-retardant adhesive on the second surface; a second transparent aramid nanofiber aerogel film is bonded to the surface of the printed pattern; and a release paper is composited with a flame-retardant adhesive on the side of the first transparent aramid nanofiber aerogel film away from the base film.

[0006] On the basis of the above solution and as a preferred solution of the above solution: the thickness of the flame retardant adhesive coating is 10-25 microns.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the base film is a metal foil or a resin film; the resin film is selected from flame-retardant polyester, polyimide, polyethersulfone, polyphenylene sulfide, polyvinyl fluoride, polyvinylidene fluoride or aromatic polyamide.

[0008] On the basis of the above solution and as a preferred solution of the above solution: a transparent flame retardant film is provided on the surface of the second transparent aramid nanofiber aerosol film away from the base film 1 .

[0009] On the basis of the above solution and as a preferred solution of the above solution: a transparent waterproof film is provided between the transparent flame retardant film and the second transparent aramid nanofiber aerosol film.

[0010] The beneficial effects of the present invention are as follows: the multi-layer composite label, through the use of a transparent aramid nano-aerogel film, ensures clear visibility of printed patterns. Furthermore, the aramid nano-aerogel film has excellent optical properties, with near-zero UV transmittance, good flexibility and adaptability, and the aerogel structure also provides excellent thermal insulation, preventing the effects of heat on the printed pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Schematic diagram of the structure of the multi-layer composite label involved in Example 1;

[0012] Figure 2 It is a schematic structural diagram of the multi-layer composite label involved in the second embodiment.

[0013] The markings in the figure are as follows: 1-base film; 2-first transparent aramid nanofiber aerogel film; 3-second transparent aramid nanofiber aerogel film; 4-release paper; 5-transparent flame retardant film; 6-transparent waterproof film. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] Example 1

[0016] Combine Figure 1 This embodiment is described in detail. This embodiment involves a multilayer composite label comprising a base film 1 having a first surface and a second surface. The base film 1 has a printed pattern on the first surface, and a first transparent aramid nanofiber aerogel film 2 is laminated to the second surface via a flame-retardant adhesive. A second transparent aramid nanofiber aerogel film 3 is bonded to the printed pattern surface. A release paper 4 is laminated to the side of the first transparent aramid nanofiber aerogel film 2 facing away from the base film 1 via a flame-retardant adhesive. The printed pattern can be a QR code or other pattern.

[0017] The transparent aramid nanofiber aerogel membranes used in the first and second transparent aramid nanofiber aerogel membranes 2 and 3 have an average pore size of 7.92 nm, a specific surface area of 52.73 m² / g, and a porosity of 92.43%, respectively. The thickness of the transparent aramid nanofiber aerogel membranes ranges from 0.5 to 2.0 μm. The aramid nanofiber aerogel membranes possess excellent optical properties, with near-zero UV transmittance, excellent flexibility, and excellent adhesion. The aerogel structure also provides excellent thermal insulation, preventing the effects of heat on printed patterns.

[0018] The thickness of the flame retardant adhesive is 10-25 microns, and in this embodiment, 15 microns is selected. The flame retardant adhesive is applied to the surface of the base film 1 by coating. The specific coating method can be slit coating, reverse roller coating, roller blade coating, etc.

[0019] Furthermore, the base film 1 is a metal foil or a resin film; the resin film is selected from flame-retardant polyester, polyimide, polyethersulfone, polyphenylene sulfide, polyvinyl fluoride, polyvinylidene fluoride or aromatic polyamide. In this embodiment, polyimide is selected because it has good flame retardant effect.

[0020] Example 2

[0021] Combine Figure 2 The multi-layer composite label of this embodiment differs from the first embodiment in that a transparent flame-retardant film 5, specifically a transparent PET flame-retardant film, is provided on the surface of the second transparent aramid nanofiber aerosol film 3 on the side away from the base film 1.

[0022] Furthermore, a transparent waterproof film 6 is provided between the transparent flame-retardant film 5 and the second transparent aramid nanofiber aerosol film 3 .

[0023] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A multi-layer composite label, characterized in that: The invention comprises a base film (1) having a first surface and a second surface; the base film (1) is provided with a printed pattern on the first surface, and a first transparent aramid nanofiber aerogel film (2) is compounded with a flame retardant adhesive on the second surface; a second transparent aramid nanofiber aerogel film (3) is bonded to the surface of the printed pattern; and a release paper (4) is compounded with a flame retardant adhesive on the side of the first transparent aramid nanofiber aerogel film (2) away from the base film (1).

2. The multi-layer composite label according to claim 1, characterized in that: The thickness of the flame retardant adhesive coating is 10-25 microns.

3. The multi-layer composite label according to claim 1, characterized in that: The base film (1) is a metal foil or a resin film; the resin film is selected from flame-retardant polyester, polyimide, polyethersulfone, polyphenylene sulfide, polyvinyl fluoride, polyvinylidene fluoride or aromatic polyamide.

4. The multi-layer composite label according to claim 1, characterized in that: A transparent flame-retardant film (5) is provided on the surface of the second transparent aramid nanofiber aerosol film (3) on the side away from the base film (1).

5. The multi-layer composite label according to claim 4, characterized in that: A transparent waterproof film (6) is provided between the transparent flame-retardant film (5) and the second transparent aramid nanofiber aerosol film (3).

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