A black, glossy, fragile, tamper-evident flexible nameplate label and its preparation method

Abstract

This invention relates to the field of anti-counterfeiting label technology, specifically a black, glossy, fragile, tamper-evident flexible nameplate label and its preparation method. The label comprises, in sequence, a black weather-resistant, engraved coating, a white weather-resistant, fragile, and weather-resistant resin film, a modified weather-resistant acrylate adhesive layer, and a 110g PE film sealing layer. The label of this invention features fragility, tamper-evident properties, high temperature resistance, wear resistance, chemical solvent resistance, and strong weather resistance. It is suitable for laser etching, can replace traditional aluminum nameplates, and is widely used in automotive parts, automotive manufacturing, and instrumentation fields. This invention also provides a preparation method for this label, with a stable process and excellent product performance.

Description

Technical Field

[0001] This invention relates to the field of anti-counterfeiting label technology, specifically a black, glossy, fragile, tamper-evident flexible nameplate label and its preparation method. Background Technology

[0002] Flexible labels, also known as laser labels or tamper-evident product labels, can replace traditional metal signs and are widely used in industries such as auto parts, automobile manufacturing, and instrumentation. Compared to traditional aluminum signs, flexible laser labels have advantages such as tamper-evident properties, cost savings, flexible engraving, and no need for inventory.

[0003] Currently, most commercially available flexible laser tags use polyester film as the substrate, coated with a laser-sensitive coating, and form the mark when irradiated by a laser. However, existing products still have the following shortcomings in practical applications:

[0004] First, it has poor weather resistance. After long-term exposure to environments such as high temperature, high humidity, and ultraviolet light, the labels are prone to problems such as coating peeling, discoloration, and embrittlement, making it difficult to meet the usage requirements of scenarios such as automobile engine compartments and outdoor instruments.

[0005] Second, insufficient chemical resistance. In automotive repair and industrial manufacturing processes, labels are frequently exposed to chemicals such as engine oil, gasoline, brake fluid, and acid / alkali solutions. Existing labels are easily corroded, leading to damage or detachment.

[0006] Third, the anti-tampering performance needs improvement. Although some existing labels are somewhat fragile, they can still be completely torn off and re-attached, posing a risk of being counterfeited or tampered with.

[0007] Fourth, the laser engraving effect is not ideal. Existing coating materials have limited sensitivity to laser response, resulting in insufficient engraving depth, blurred edges, and low contrast, which affects the readability.

[0008] Therefore, developing a flexible nameplate label that combines excellent weather resistance, chemical resistance, tamper-proof performance, and good laser engraving effect is of great practical significance. Summary of the Invention

[0009] The purpose of this invention is to provide a black, glossy, fragile, tamper-evident flexible nameplate label and its preparation method, so as to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] A black, glossy, fragile, tamper-evident flexible nameplate label, stacked in sequence:

[0012] Black weather-resistant sculptable coating;

[0013] White, weather-resistant, fragile, weather-resistant resin film;

[0014] Modified weather-resistant acrylic adhesive layer;

[0015] 110g PE coating for bottom sealing.

[0016] As a further aspect of the present invention: the thickness of the white weather-resistant and fragile weather-resistant resin film is 70-80μm, preferably 75μm.

[0017] As a further aspect of the present invention: the black weather-resistant and sculptable coating is an MMA system coating, which is prepared by mixing MMA black ink and curing agent at a mass ratio of 100:10.

[0018] As a further aspect of the present invention: the modified weather-resistant acrylate adhesive layer is formulated with acrylate adhesive and isocyanate curing agent, wherein the acrylate adhesive is 93# acrylate adhesive and the isocyanate curing agent is L-45 isocyanate curing agent, and the mass ratio of the two is 100:0.6.

[0019] This invention also provides a method for preparing a black, glossy, fragile, tamper-evident flexible nameplate label, comprising the following steps:

[0020] (1) Weather-resistant polyester resin masterbatch is melted and then extruded into a film to obtain a white weather-resistant and fragile weather-resistant resin film;

[0021] (2) Prepare a black weather-resistant and engraved coating liquid;

[0022] (3) The coating liquid obtained in step (2) is applied to the upper surface of the resin film obtained in step (1), and then dried and cured to form a black weather-resistant and sculptable coating.

[0023] (4) Prepare modified weather-resistant acrylic adhesive;

[0024] (5) Apply the adhesive obtained in step (4) onto 110g of PE film sealant;

[0025] (6) Combine the adhesive layer obtained in step (5) with the semi-finished product obtained in step (3) and roll it up to obtain the finished product.

[0026] As a further aspect of the present invention: in step (3), segmented drying is adopted, and the drying temperature includes 90℃, 100℃, and 90℃. After drying, the product is placed at room temperature for 24 hours.

[0027] As a further aspect of the present invention: in step (5), segmented temperature-controlled coating is adopted, and the coating temperature includes 90℃, 100℃, 110℃, 120℃, 125℃ and 90℃, and the coating speed is 25m / min.

[0028] As a further aspect of the present invention: the 110g PE film sealant is a PE film release liner containing kaolin.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. Strong weather resistance: It adopts weather-resistant polyester resin film and MMA weather-resistant coating, which can withstand harsh environments such as high temperature, high humidity and ultraviolet light for a long time, meeting the usage requirements of automotive engine compartment, outdoor instruments and other scenarios.

[0031] 2. Good chemical resistance: The coating and adhesive layer are made of chemically resistant materials, which can resist the erosion of common chemical substances such as engine oil, gasoline, brake fluid, acid and alkali solutions.

[0032] 3. Excellent anti-tampering performance: The label is fragile and will break when attempted to be torn, preventing complete transfer and effectively preventing tampering and counterfeiting.

[0033] 4. Excellent laser engraving effect: The black coating is highly responsive to lasers, with uniform engraving depth, clear edges, and high contrast. The maximum etching speed can reach 1000mm / s.

[0034] 5. High peel strength: The peel strength of the modified weather-resistant acrylate adhesive layer is greater than 0.44 N / mm, ensuring long-lasting and stable adhesion.

[0035] 6. Alternative to aluminum signs: Saves costs, offers flexible engraving options, requires no inventory, and has significant practical economic value. Attached Figure Description

[0036] Figure 1 This is a structural diagram of a black, glossy, fragile, tamper-evident flexible nameplate label.

[0037] In the image: 1. Black weather-resistant and sculptable coating; 2. White weather-resistant and fragile resin film; 3. Modified weather-resistant acrylic adhesive layer; 4. PE film sealing. Detailed Implementation

[0038] The technical solution of this application will be further described in detail below with reference to specific embodiments.

[0039] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0040] Example 1

[0041] Reference Figure 1This embodiment provides a black glossy fragile tamper-evident flexible nameplate label, the structure of which includes, from top to bottom: a black weather-resistant and engraved coating 1, a white weather-resistant and fragile weather-resistant resin film 2, a modified weather-resistant acrylic adhesive layer 3, and a PE film sealing base 4.

[0042] The label is prepared as follows:

[0043] (1) After melting the weather-resistant polyester resin masterbatch, it is uniformly extruded into a 75μm white weather-resistant and fragile weather-resistant resin film 2 by an extruder;

[0044] (2) Mix MMA black ink and curing agent thoroughly at a mass ratio of 100:10 to obtain a black weather-resistant engraving coating liquid;

[0045] (3) The coating liquid is evenly coated onto the upper surface of the white weather-resistant and fragile weather-resistant resin film 2 using an anilox roller. After being dried in sections at 90℃, 100℃ and 90℃, it is left at room temperature for 24 hours to cure, forming a black weather-resistant and engraved coating 1.

[0046] (4) Mix 93# acrylate adhesive and L-45 isocyanate curing agent at a mass ratio of 100:0.6 and stir for 20 minutes to obtain modified weather-resistant acrylate adhesive;

[0047] (5) Use a scraper coater to transfer the adhesive onto 110g of PE film sealer 4 containing kaolin to form a modified weather-resistant acrylic adhesive layer 3. The coating temperatures are 90℃, 100℃, 110℃, 120℃, 125℃ and 90℃ respectively, and the coating speed is 25m / min.

[0048] (6) The modified weather-resistant acrylate adhesive layer 3 is bonded to the semi-finished product obtained in step (3) and then rolled up to obtain the finished product.

[0049] The resulting label has an overall layer thickness of 120μm, a peel strength of >0.44N / mm, clear laser etching, withstands 1000h of damp heat test, is resistant to acid and alkali solvents, and has a maximum etching speed of 1000mm / s.

[0050] Example 2

[0051] The results are basically the same as in Example 1, except that the thickness of the white weather-resistant and fragile weather-resistant resin film 2 is 70 μm, and the overall thickness of the working layer is 115 μm. The properties of the resulting label are basically the same as those in Example 1.

[0052] Example 3

[0053] The results are basically the same as in Example 1, except that the thickness of the white weather-resistant and fragile weather-resistant resin film 2 is 80 μm, and the overall thickness of the working layer is 130 μm. The properties of the resulting label are basically the same as those in Example 1.

[0054] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these should also be considered within the scope of protection of the present invention. These will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A black, glossy, fragile, tamper-evident flexible nameplate label, characterized in that, Set up in layers sequentially: Black weather-resistant sculptable coating; White, weather-resistant, fragile, weather-resistant resin film; Modified weather-resistant acrylic adhesive layer; 110g PE coating for bottom sealing.

2. The black glossy fragile tamper-evident flexible nameplate label according to claim 1, characterized in that, The thickness of the white weather-resistant and fragile weather-resistant resin film is 70-80 μm.

3. The black glossy fragile tamper-evident flexible nameplate label according to claim 2, characterized in that, The black weather-resistant and sculptable coating is an MMA system coating, which is prepared by mixing MMA black ink and curing agent at a mass ratio of 100:

10.

4. The black glossy fragile tamper-evident flexible nameplate label according to claim 3, characterized in that, The modified weather-resistant acrylate adhesive layer is formulated with acrylate adhesive and isocyanate curing agent. The acrylate adhesive is 93# acrylate adhesive and the isocyanate curing agent is L-45 isocyanate curing agent, with a mass ratio of 100:0.

6.

5. A method for preparing a black, glossy, fragile, tamper-evident flexible nameplate label as described in any one of claims 1 to 4, characterized in that, Includes the following steps: (1) Weather-resistant polyester resin masterbatch is melted and then extruded into a film to obtain a white weather-resistant and fragile weather-resistant resin film; (2) Prepare a black weather-resistant and engraved coating liquid; (3) The coating liquid obtained in step (2) is applied to the upper surface of the resin film obtained in step (1), and then dried and cured to form a black weather-resistant and sculptable coating. (4) Prepare modified weather-resistant acrylic adhesive; (5) Apply the adhesive obtained in step (4) onto 110g of PE film sealant; (6) Combine the adhesive layer obtained in step (5) with the semi-finished product obtained in step (3) and roll it up to obtain the finished product.

6. The method for preparing a black, glossy, fragile, tamper-evident flexible nameplate label according to claim 5, characterized in that, In step (3), segmented drying is used, with drying temperatures including 90℃, 100℃, and 90℃. After drying, the product is left at room temperature for 24 hours.

7. The method for preparing a black, glossy, fragile, tamper-evident flexible nameplate label according to claim 5, characterized in that, In step (5), segmented temperature-controlled coating is used, with coating temperatures including 90℃, 100℃, 110℃, 120℃, 125℃, and 90℃, and a coating speed of 25m / min.

8. The method for preparing a black, glossy, fragile, tamper-evident flexible nameplate label according to claim 5, characterized in that, The 110g PE film sealant is a PE release film containing kaolin.

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