Laminated PET film and spectacle frame

Abstract

The utility model relates to a laminated PET (Polyethylene Terephthalate) film for forming a logo on a surface. The laminated PET film comprises a first layer and a second layer, wherein the first layer comprises a PET mirror film; a second layer comprising a gum; a third layer comprising a release base film; wherein the second layer is sandwiched between the first layer and the third layer, characterized in that the laminated PET film comprises a logo region and a waste region, the boundary between the logo region and the waste region being defined by a cut through the first layer and the second layer and partially through the third layer. The utility model provides a feasible and advanced logo manufacturing solution.

Description

TECHNICAL FIELD

[0001] The present utility model belongs to the manufacturing field and is used for forming a logo. More specifically, the present utility model relates to a technology for forming a logo on various surfaces, such as on eyeglass frames. BACKGROUND

[0002] In the optical industry and various consumer product markets, brand promotion is crucial for product differentiation and consumer recognition. Logos on eyeglass frames and other products not only enhance aesthetic appeal but also strengthen brand recognition. However, traditional logo production methods often involve metal components, such as nickel-based metals, which present numerous challenges.

[0003] Firstly, metal logos are generally limited in design flexibility. The manufacturing process of metal logos can be difficult to achieve complex pattern designs, thereby limiting creativity and innovation in logo creation. In addition, metal logos also add extra weight and bulk to products like eyeglass frames, affecting product comfort and usability, especially when worn for long periods. Traditional metal logo manufacturing processes, such as stamping, carving, or etching, are complex, time-consuming, and costly. They often require specialized equipment and skilled labor, thereby increasing production costs.

[0004] Furthermore, although metal logos are durable, they are still prone to corrosion and loss of luster when exposed to environmental factors such as moisture and chemicals for a long time. At the same time, it is also challenging to firmly adhere metal logos to non-metal surfaces such as plastic or acetate. Inadequate adhesion can cause the logo to fall off the product, affecting brand integrity.

[0005] In addition, many metal logos contain nickel, the release of which can cause allergic reactions in sensitive individuals. This hinders the use of these logos on mass-produced products, as they must meet strict safety standards to minimize nickel exposure. In the prior art, although nickel-free metal letters can solve the problem of nickel release, they cannot solve other problems in the prior art.

[0006] To address these challenges, there is a need for a logo that can provide greater design flexibility, improved safety, and enhanced durability.

[0007] The present utility model aims to solve these problems in the prior art. UTILITY MODEL CONTENT

[0008] The present utility model provides a laminated PET film for forming a logo on the surface of an object, such as an eyeglass frame. The design of the film provides more technical advantages than traditional methods, addressing key issues such as design flexibility, safety, and cost-effectiveness.

[0009] According to one aspect of the present utility model, a laminated PET (polyester) film for forming a logo on a product surface (such as a spectacle frame, particularly an injection-molded temple) is presented, the film comprising:

[0010] · a first layer comprising a PET mirror film,

[0011] · a second layer comprising an adhesive backing,

[0012] · a third layer comprising a release backing, wherein the second layer is sandwiched between the first and third layers,

[0013] The laminated PET film is characterized by a logo area and a waste area, the boundary between these areas being defined by a cut-through the first and second layers and partially through the third layer.

[0014] According to this multi-layer structure of the present utility model, compared with the traditional metal logo, excellent adhesion performance, design flexibility and more cost-effective are provided. The use of PET mirror film avoids the need for nickel, reduces the risk of allergy, and ensures compliance with safety standards. The sandwich structure with specific cuts ensures perfect fusion between layers, facilitating clean separation of the logo from the waste area.

[0015] Preferably, the thickness of the first layer is between 47 and 53 microns. This specific thickness range ensures that the film has sufficient strength and rigidity during handling and application, while also providing the optical transparency required for the appearance of the logo.

[0016] Preferably, the PET mirror film comprises a transparent film and a PVD (Physical Vapor Deposition) coating film. The combination of the transparent film and the PVD coating enhances the visual appeal of the logo by providing a metallic luster surface effect, without the need for metal components that can corrode or lose their luster. This structure improves durability and maintains the aesthetic quality of the logo.

[0017] Preferably, the PVD coating film is an aluminum-PVD film. The use of an aluminum-PVD coating film provides a high-quality metallic appearance that is lightweight and corrosion-resistant. The use of aluminum in the PVD process also avoids the use of nickel, providing a safer alternative for consumers who are sensitive to metals.

[0018] Preferably, the release backing in the third layer has a weight of between 135 and 145 grams per square meter. The weight of this release backing ensures sufficient support during handling and application. It also facilitates easy removal when the logo is applied, improving the efficiency of the application process.

[0019] Preferably, the width of the cut is between 0.015mm and 0.025mm. The precision cut width achieved using picosecond laser technology allows for complex and detailed logo designs to be achieved. This precision improves the quality and clarity of the logo, meeting high aesthetic standards.

[0020] Preferably, the laminated PET film according to the present invention further comprises a protective film on top of the first layer. The addition of a protective film protects the PET mirror film during handling and application. This layer prevents scratches and damage, ensuring the logo remains intact prior to application to a surface.

[0021] Preferably, in the laminated PET film according to the present invention, the first adhesive force between the first and second layers is greater than the second adhesive force between the second and third layers, and the third adhesive force between the first layer and the protective film is less than the second adhesive force. This differential adhesive force design ensures the logo adheres firmly to the desired surface, while allowing the protective film to be easily removed. It improves the efficiency and reliability of the application process.

[0022] Preferably, the laminated PET film according to the present invention further comprises at least one positioning area for aligning the film on a surface. This positioning area aids in the accurate positioning and alignment of the film during application, ensuring the precise placement of the logo. This feature reduces application errors and improves the consistency of mass logo applications.

[0023] According to another aspect of the present invention, there is provided a spectacle frame comprising a logo formed from a laminated PET film according to the present invention. By incorporating the laminated PET film into a spectacle frame, the present invention demonstrates its practical application in commercial products. This embodies the advantages of the film in enhancing brand recognition through precise and aesthetically pleasing logos, while also providing durability and safety advantages.

[0024] In this context, the present invention introduces a laminated PET film utilizing advanced material configurations and cutting-edge technology, capable of providing precise, high-quality logos, overcoming the shortcomings of traditional methods. This innovation not only reduces manufacturing costs but also shortens logo development time from months to days, offering a safer, more flexible, and cost-effective alternative to traditional metal logos. By significantly improving the manufacturing process and product quality, this approach substantially enhances logo application quality across industries.

[0025] Therefore, the present invention effectively addresses the problems in the prior art, providing a feasible and advanced logo solution.

[0026] The features and advantages of other aspects of the present invention will be discussed in the detailed description below, and those skilled in the art will be able to clearly understand the content of the present invention and the technical effects achieved based on the following embodiments. Attached Figure Description

[0027] It should be understood that, except in cases of obvious contradictions or incompatibilities, all features, modifications and / or specific embodiments may be combined in various ways.

[0028] Other features and advantages of this invention will become apparent from the following specific embodiments, which are provided as non-limiting descriptions, and in conjunction with the accompanying drawings, in which:

[0029] - Figure 1 The layer structure of a laminated PET film according to an exemplary embodiment of the present invention is shown.

[0030] - Figure 2 A flowchart illustrating an exemplary process for applying a laminated PET film according to the present invention is shown. Detailed Implementation

[0031] The following are exemplary embodiments according to the present invention. The related definitions below are primarily for describing exemplary embodiments and not for limiting the scope of the present invention. Since the embodiments described herein are exemplary, they can also be extended to modifications relating to the functionality, purpose, and / or structure of the present invention.

[0032] like Figure 1 As shown, an exemplary laminated PET film according to the present invention includes a multi-layer structure designed to facilitate the formation of high-quality logos with durability and aesthetic appeal. The PET film structure includes the following layers:

[0033] - The first layer, or top layer of the laminate, contains a PET mirror film. The mirror film itself, for example, comprises a clear PET film and a PVD-coated film. The PVD layer, for example, is made of aluminum (Al-PVD), providing a shiny metallic finish and giving the logo a metallic sheen without using traditional metals such as nickel (which are often associated with allergic reactions). This layer is typically 47 to 53 micrometers thick, providing the necessary structural integrity and visual clarity.

[0034] - The second layer, 2, located below the first layer, 1, is an adhesive backing layer that acts as an bonding component in the laminate. The adhesive in the backing layer ensures a strong bond between the upper and lower layers, providing structural integrity and preventing delamination during cutting and application. Furthermore, this layer is crucial for ensuring the logo adheres firmly to the underlying surface. It is carefully designed to accommodate precise cuts and maintain the integrity of the logo area during application.

[0035] - a third layer 3, as the base layer of the structure, is a release backing film. The third layer 3 usually has a weight of 140 ± 5 grams per square meter, which facilitates the production handling and application of the PET film. It acts as a protective barrier during the laser cutting process and is partially cut to facilitate easy removal and effective transfer onto the target surface after application.

[0036] According to the present application, when viewed from above (plan view), the laminated PET film comprises a logo area and a waste area, the boundary between the logo area and the waste area being defined by a cut C passing through the first and second layers 1, 2 and partially through the third layer 3. Preferably, the cut C has a width of between 0.015 mm and 0.025 mm to improve the quality and clarity of the logo, meeting high aesthetic standards.

[0037] Preferably, in order to provide additional protection during handling and application, the laminated PET film further comprises an optional protective film 4, which is located on top of the first layer 1. This protective film 4 prevents scratches and damage, ensuring that the logo remains intact before being applied to the surface.

[0038] Preferably, the adhesion between adjacent layers is configured as follows:

[0039] - a first adhesion between the first and second layers is greater than

[0040] - a second adhesion between the second and third layers, and

[0041] - a third adhesion between the first layer and the protective film is less than the second adhesion.

[0042] This differential design of adhesion ensures that the logo adheres firmly to the desired surface, while allowing the protective film to be easily removed. It improves the efficiency and reliability of the application process.

[0043] Preferably, the laminated PET film according to the present application further comprises at least one positioning area for positioning and aligning the film on the surface of the object. This positioning area is, for example, in the form of holes through which pins on a positioning device can pass in order to secure the film to the positioning device, thereby fixing and aligning the logo with the surface to which it is to be applied.

[0044] The application process of the laminated PET film according to the present application comprises several carefully designed steps to ensure precision and quality.

[0045] First, the surface of the target object, such as a spectacle frame, must be thoroughly cleaned to remove any dust or grease, facilitating optimal application. Afterwards, the release backing film is carefully peeled off. Then, the laminated PET film is positioned and aligned on the target surface, such as a spectacle frame, through the positioning area, ensuring accurate placement of the logo with respect to the spectacle frame. Once aligned, pressure is applied on the logo area to facilitate adhesion between the backing adhesive and the spectacle frame. The strong first adhesion force between the PET film and the backing adhesive ensures that the logo remains firmly in place. The next step is then to separate the logo from the waste area, i.e. to peel off the waste area and leave the logo area on the surface. If a protective film was used, it is finally removed to reveal the final logo, with the third adhesion force being easily removable without affecting the adhesion of the logo. The logo is then checked for air bubbles and adjusted if necessary to ensure its smooth adhesion to the frame. This process allows the logo to be applied precisely, cleanly and efficiently to the surface of the spectacle frame, such as the surface of the temples, maintaining the quality and appearance of the brand logo.

[0046] A more detailed exemplary manufacturing and implementation process is as follows, as shown in Figure 2

[0047] 1. Preparation and provision S1: A PET film having a three-layer structure as previously described is first provided.

[0048] 2. Cutting and shaping S2: Using advanced laser cutting technology, such as picosecond laser cutting technology, the film is precisely cut through the first and second layers 1, 2 and partially through the third layer 3, in order to shape the logo on the PET film. This laser cutting is crucial for the exact shape and size of the logo, ensuring high resolution and clean edges.

[0049] 3. Application of protective layer S3: Optionally, a protective film 4 is applied on top of the first layer 1. This film 4 plays a key role in protecting the PET mirror surface during subsequent steps, particularly during handling and positioning.

[0050] 4. Formation of the logo on the surface S4: This step comprises the following sub-steps for forming the logo on the target surface, such as the temples of a spectacle frame:

[0051] - Removal of the release backing film S4.1: The release backing film of the third layer 3 is removed before applying the logo to the surface.

[0052] - Positioning and pressing S4.2: The logo and its support layers are positioned on the spectacle frame temples or other product surface by means of the positioning device described above. Depending on the predetermined adhesion force level, precise alignment and pressing are carried out to facilitate easy removal.

[0053] - Removal of the protective layer S4.3: After positioning and pressing, the protective film located on the first layer is removed, revealing the high-quality surface of the PVD coating. ​

[0054] - removing waste areas S4.4: subsequently, any waste areas are removed, leaving only the logo areas adhered to the product.

[0055] - pressing the logo S4.5: finally, optionally, the remaining logo areas are pressed again for a few seconds to ensure that the logo adheres to the surface.

[0056] 5. final step S5: finishing by varnishing or performing additional finishing treatments to enhance visual appeal or to meet specific aesthetic requirements.

[0057] The process allows for the precise, clean and efficient application of logos to a variety of surfaces, maintaining the quality and appearance of the brand identification. During the application process, the release backing and protective film can be easily removed, ensuring that the logo remains perfect, without any residue or damage.

[0058] The present application is particularly suitable for forming logos on eyewear frames and other consumer products. The laminated PET film according to the present application provides a cost-effective and scalable solution for large-scale manufacturing operations. The present application allows for reduced production costs and shortens development time from months to days, making it an ideal choice for efficient, high-quality logo formation.

[0059] The above examples are merely examples of the present application, and in particular it is to be understood that the features, variants and / or specific embodiments described in the present application can be combined with each other, except in cases of obvious contradiction or incompatibility. All these examples, variants and improvements are within the scope of protection of the present application.

Claims

1. A laminated PET film for forming a logo on a surface, comprising: - a first layer (1) comprising a PET mirror film; - a second layer (2) comprising a back adhesive; - a third layer (3) comprising a release backing, wherein the second layer (2) is sandwiched between the first layer (1) and the third layer (3), characterized in that the laminated PET film further comprises a logo area and a waste area, the boundary between the logo area and the waste area being defined by a cut (C) passing through the first layer and the second layer and partially through the third layer.

2. The laminated PET film according to claim 1, characterized in that, The thickness of the first layer is between 47 and 53 microns.

3. The laminated PET film according to claim 1, characterized in that, The PET mirror film comprises a transparent film and a PVD-coated film.

4. The laminated PET film according to claim 3, characterized in that, The PVD-coated film is an aluminum-PVD film.

5. The laminated PET film according to claim 1, characterized in that, The weight of the release backing in the third layer is between 135 and 145 grams per square meter.

6. The laminated PET film according to claim 1, characterized in that, The width of the cut is between 0.015 and 0.025 millimeters.

7. The laminated PET film according to claim 1, characterized in that, Further comprising a protective film on top of the first layer.

8. The laminated PET film according to claim 7, characterized in that: the first adhesion between the first layer and the second layer is greater than the second adhesion between the second layer and the third layer, and the third adhesion between the first layer and the protective film is less than the second adhesion.

9. The laminated PET film according to claim 1, characterized in that, Further comprising at least one positioning area for aligning the film.

10. An eyeglass frame, characterized by A logo formed from the laminated PET film according to claim 1.

Images