Colored protective film for lens and lens fixing structure

Abstract

The utility model discloses a colored protective film for a lens and a lens fixing structure. The colored protective film is characterized by only comprising three layers of structures, namely a release layer (3), a pressure-sensitive adhesive layer (2) and a base material layer (1) which are sequentially laminated, the pressure-sensitive adhesive layer (2) is used for being in direct fit contact with a resin lens blank so as to fix the lens; the inner surface of the base material layer (1) is combined with the pressure-sensitive adhesive layer (2), and the outer surface of the base material layer (1) is an uneven surface with a microcosmic concave-convex structure and is used for being in contact and combined with low-melting-point metal to form a metal seat; the release layer (3) covers the pressure-sensitive adhesive layer (2) in a peelable manner; the colors of all the layers are matched to form the colored protective film. The number of layers of the protective film is small, the protective film is of a three-layer structure, a coating does not need to be arranged on the contact face of the base material and metal, the material cost is saved, damage to the environment is greatly reduced, the cleanliness of the protective film is guaranteed, the fixing mode is simple, the lens fixing effect is good, and lens falling is avoided.

Description

Technical Field

[0001] The utility model belongs to a lens protective film, in particular to a colored protective film for a lens and a lens fixing mechanism based on the protective film, and belongs to the technical field of lens protective films. Background Art

[0002] With the improvement of social and economic development, more and more people are more and more inclined to personalized needs. Customization of eyeglass lenses or microscope lenses is an inevitable trend. During the customization process, precision processing of car lenses can meet the needs and preferences of different people. During the production process of the car, the lenses need to be coarsely ground and finely ground by high-precision automation devices according to the parameters set on demand. In order to protect the surface integrity of the car lens and the transmittance and chromaticity requirements, the car lens needs to use a special protective film to protect the lens during the processing and grinding process.

[0003] There are two main methods at present: one is to brush a layer of epoxy resin paint or polyurethane paint on the surface of the protective film, and then bond it with the low-melting-point alloy used for fixing the clamp to fix the lens. This process takes a long time, is inefficient, and has high costs; the second is to use a colored protective film tape with a pre-coated layer to solve the problem of the effect of brushing paint, but this protective film tape has a five-layer structure, which is complex in structure, and there will be residual glue on the surface and around the film body, as well as related problems such as the environmental pollution of the colloid. In addition, it has been found through engineering practice that the film drop rate occasionally occurs, which has an adverse effect on production. The third is a protective film coated with a water-based coating, but the protective film has a four-layer structure and needs to be coated twice to manufacture the film body. It has a complex structure, the process is not easy to control, and the cost is high.

[0004] In order to solve the above problems, it is necessary to develop a colored protective film for lenses with simple structure, simple process, environmental protection and energy saving, and stable fixing ability without falling off, as well as a lens fixing structure with simple operation and high quality derived from it. Utility Model Content

[0005] The technical problem to be solved by the utility model is to change the complex structure of the existing lens protective film, and provide a colored protective film for lenses. Compared with the complex coating of the existing protective film, the structure is simple, with only three layers, and no coating is required on the substrate and the metal contact surface, which simplifies the processing technology and improves the processing efficiency. The protective film has high cleanliness, reduces energy consumption and reduces environmental damage. More importantly, it can be stably fixed to the metal contact surface. It can be well applied to garage lenses and microscope lenses.

[0006] Therefore, the utility model also provides a garage lens fixing structure. By using the colored lens protective film of the utility model, the lens fixing effect can be achieved by directly peeling off the release layer, avoiding a complicated fixing process. The improved cleanliness of the protective film itself further ensures the quality and accuracy of lens processing.

[0007] The utility model provides the following technical solutions to solve the above technical problems:

[0008] A colored protective film for lenses, characterized by comprising only three layers:

[0009] A release layer (3), a pressure-sensitive adhesive layer (2), and a substrate layer (1) are stacked in sequence;

[0010] The pressure-sensitive adhesive layer (2) is used to directly contact the resin lens blank to fix the lens;

[0011] The substrate layer (1) has an inner surface bonded to the pressure-sensitive adhesive layer (2), and an outer surface that is an uneven surface having a microscopic concave-convex structure, and the outer surface is used to contact and bond with a low-melting-point metal to form a metal seat;

[0012] The release layer (3) is releasably covered on the pressure-sensitive adhesive layer (2);

[0013] The colors of the various layers are coordinated to form a colored protective film.

[0014] In the above technical solution, the substrate layer (1) and the release layer (3) are arranged in a variety of colors to form protective films of different colors.

[0015] In the above technical solution, the release layer (3), the pressure-sensitive adhesive layer (2), and the substrate layer (1) form a blue protective film that can be used for a garage lens, or form protective films of various colors for a convex lens of a microscope.

[0016] In the above technical solution, the substrate layer (1) is a substrate film made of PE or PP material; and the surface energy of the outer surface of the substrate layer (1) is not less than 41 dyn / cm.

[0017] In the above technical solution, the outer surface of the substrate layer (1) in contact with the low melting point alloy is an uneven surface having a microscopic convex-concave structure after plasma treatment.

[0018] In the above technical solution, the substrate layer (1) is an uneven substrate film having a microscopic convex-concave structure and containing calcium carbonate or silicon dioxide inorganic solid particles in a PE or PP substrate.

[0019] In the above technical solution, the thickness of the substrate layer (1) is 50um-80um.

[0020] In the above technical solution, the thickness of the pressure-sensitive adhesive layer (2) is 20-30 μm of viscous colloid; the peeling force of the pressure-sensitive adhesive layer (2) is 300g-700g / 25mm.

[0021] A garage lens fixing structure with a colored protective film for lenses as described in any one of the above items, characterized in that:

[0022] The concave surface of the pressure-sensitive adhesive layer (2) is directly bonded to the convex surface of the lens (5), and the convex surface of the substrate layer (1) is directly bonded to the low-melting-point metal to form a metal seat (4); the other end of the metal seat (4) away from the substrate layer (1) is rotatably arranged to adjust the processing position or angle of the lens.

[0023] In the above technical solution, the concave surface of the pressure-sensitive adhesive layer (2) is bonded to the convex surface of the lens (5) with the concave surface facing upward, and the convex surface of the substrate layer (1) is bonded to the low-melting-point metal located below to form a metal seat (4).

[0024] In the above technical solution, the release layer (3), the pressure-sensitive adhesive layer (2), and the substrate layer (1) are all provided with different colors.

[0025] In the above technical solution, the substrate layer (1) and the release layer (3) are arranged in a variety of colors to form protective films of different colors.

[0026] In the above technical solution, the pressure-sensitive adhesive layer (2) is an acrylic or rubber-based pressure-sensitive adhesive.

[0027] In the above technical solution, the release layer (3) is a release paper or a PET release film.

[0028] Furthermore, the plasma treatment method used, such as the conventional plasma bombardment method, can be applied, as long as the surface presents the non-planar characteristics of the concave-convex structure that can be observed or characterized at the microscopic level.

[0029] In the above technical solution, before applying the glue, the coating surface of the substrate layer (1) is subjected to corona treatment.

[0030] In the above technical solution, after coating, the colloid of the pressure-sensitive adhesive layer (2) maintains relative fluidity on the substrate layer (1) to form a venting effect.

[0031] In the above technical solution, a lens processing head (6) is used to process the lens (5) from above or from each set target direction.

[0032] Therefore, the colored protective film for lenses provided by the utility model adopts plasma treatment on the substrate to increase the surface energy and roughness of the film surface, so that the low melting point metal and the substrate are tightly combined or bonded; and then a pressure-sensitive adhesive layer is coated on the other side of the substrate and attached to the surface of the lens, so that the lens is tightly attached to the surface of the lens during processing or transportation, thereby achieving the purpose of protecting the film lens.

[0033] The working principle of the utility model is as follows: 1. The colored protective film for lenses provided by the utility model adopts PE or PP film as the substrate, which has good ductility. The surface where the substrate and the low-melting-point metal are combined is plasma-treated, or the substrate layer contains inorganic solid particles such as calcium carbonate or silicon dioxide, or both, in order to increase the surface energy and roughness of the PE or PP film. When the surface energy reaches or exceeds 41dyn / cm, the protective film is tightly combined with the low-melting-point metal and does not fall off.

[0034] 2. The colored protective film for lenses provided by the utility model uses acrylic or rubber glue as the glue for the pressure-sensitive adhesive layer. The surface of the substrate needs to be corona treated before applying the glue. The thickness of the glue is 20um-30um, which allows the substrate to be firmly attached to the lens without falling off or leaving residual glue.

[0035] 3. The colored protective film for lenses provided by the present invention has a release layer made of release paper or release film, in order to make it easier to peel off the protective film.

[0036] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0037] (1) The colored protective film for lenses provided by the utility model has only three layers, and the product structure is simple, the operation is convenient, and the cost is saved.

[0038] (2) The colored protective film for lenses provided by the utility model can be bonded to low-melting-point metals without any coating due to the microscopic uneven structure on the outer surface of the substrate layer, which can greatly reduce the use of organic solvents, is highly environmentally friendly and can ensure the cleanliness of the protective film itself.

[0039] (3) The colored protective film for lenses provided by the utility model has a simple production process, high efficiency and low cost. Due to the special structural setting of the substrate layer, at least one coating layer or paint layer is reduced compared with the traditional two-step coating or painting process, the production efficiency is higher and the material cost is saved. The saved coating material and process cost reaches more than about 50%. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 The utility model provides a structural schematic diagram of a colored protective film for lenses; the markings in the figure are: 1, substrate layer; 2, pressure-sensitive adhesive layer; 3, release layer.

[0042] Figure 2 This is a schematic diagram of the structure of the utility model for fixing lenses; the markings in the figure are: 1, substrate layer; 2, pressure-sensitive adhesive layer; 4, low-melting-point metal seat; 5, resin lens blank; 6, grinding head. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0047] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] The features and performance of the present application are further described in detail below in conjunction with the embodiments.

[0051] The present invention is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, but the implementation methods of the present invention are not limited thereto.

[0052] Embodiment 1:

[0053] like Figure 1 As shown, this embodiment provides a colored protective film for lenses, including a substrate layer 1, a pressure-sensitive adhesive layer 2, and a release layer 3. In this embodiment, as Figure 1 As shown, the release layer 3, the pressure-sensitive adhesive layer 2, and the substrate layer or the alloy adhesive layer 1 are stacked in sequence.

[0054] In this embodiment, as shown in the figure, the substrate layer 1 is a PE or PP material film, and the thickness of the substrate is 50um-80um. The surface of the substrate layer 1 in contact with the low melting point alloy is plasma treated, and the surface energy of the substrate surface after plasma treatment is not less than 41dyn / cm. It can effectively ensure that the low melting point metal is firmly bonded to the substrate and does not fall off. Using plasma treatment instead of coating greatly improves efficiency, reduces material cost, is highly environmentally friendly, has a simple process, and is easy to process.

[0055] The plasma treatment methods that can be used, such as conventional plasma bombardment methods, are all applicable, with the surface presenting non-planar features of a concave-convex structure that can be observed or characterized at the microscopic level.

[0056] The preferred plasma treatment machine has a power of 2-4KW and a treatment speed of 3-20m / min. The surface energy after treatment is not less than 41dyn / cm, and the surface has an uneven surface feature with a microscopic concave-convex structure.

[0057] In the above technical solution, before applying the glue, the coating surface of the substrate layer 1 is subjected to corona treatment.

[0058] Furthermore, the substrate layer (1) of the utility model is an uneven surface having a microscopic convex-concave structure and containing inorganic solid particles such as calcium carbonate or silicon dioxide in a substrate of PE or PP material. In this case, if the concave-convex structure reaches a surface energy of not less than 41 dyn / cm, plasma treatment may not be performed to further form the microscopic convex-concave structure. In this case, the substrate layer 1 is an uneven substrate film having a microscopic convex-concave structure and containing inorganic solid particles such as calcium carbonate or silicon dioxide in a substrate of PE or PP material.

[0059] In this embodiment, if Figure 1 As shown, the pressure-sensitive adhesive layer 2 is a rubber-based pressure-sensitive adhesive, which has good initial adhesion and strong adhesion and is suitable for various complex lens surfaces. For special lens surfaces, a rubber-based pressure-sensitive adhesive layer is required, which is a colored lens protective film.

[0060] The pressure-sensitive adhesive layer 2 needs to be coated on the substrate layer, and the coated surface of the substrate needs to be corona treated before coating. The thickness of the pressure-sensitive adhesive layer 2 is 20-30 μm. The peeling force is 300g-700g / 25mm. The colloid of the pressure-sensitive adhesive layer 2 maintains relative fluidity on the substrate layer 1 to form a degassing effect.

[0061] In this embodiment, the release layer 3 is a release paper or a PET release film, and the surface of the release layer is coated with a silicon release agent.

[0062] In this embodiment, the substrate layer 1, the pressure-sensitive adhesive layer 2, and the release layer 3 are all provided with different colors, and the substrate layer 1 and the release layer 3 are arranged in various ways to form protective films of different colors, such as a blue protective film for a car body lens, and various colored protective films for a convex lens of a microscope.

[0063] Embodiment 2:

[0064] The main differences between the present embodiment 2 and the embodiment 1 are as follows: the pressure-sensitive adhesive layer 2 adopts acrylic pressure-sensitive adhesive, which has a low cost and is an economical lens protective film.

[0065] Therefore, the utility model provides a colored lens protective film, which uses plasma treatment on the substrate to increase the surface energy and roughness of the film surface, so that the low-melting-point metal and the substrate are tightly combined; and then a pressure-sensitive adhesive layer is coated on the other side of the substrate and adhered to the lens surface, so that the lens is tightly attached to the lens surface during processing or transportation, thereby achieving the purpose of protecting the film lens.

[0066] Example 3: Figure 2 A structure for fixing a garage lens using the above-mentioned colored protective film for lenses. When in use, peel off the release layer 3, firmly adhere the convex surface of the lens through the pressure-sensitive adhesive layer 2, and inject the low-melting-point metal into the base mold in a liquid state at 50°C, cool it down to room temperature and then become a low-melting-point metal seat 4, which is combined with the protective film substrate layer 1. During grinding, the low-melting-point metal seat 4 is rotated, and the lens grinding head 6 grinds the lens or resin lens blank 5.

[0067] Specifically, the concave surface of the pressure-sensitive adhesive layer 2 is combined with the convex surface of the resin lens blank 5 , and the convex surface of the substrate layer 1 and the low-melting-point metal form a metal seat 4 .

[0068] Specifically, in order to maintain the supporting force, the concave surface of the pressure-sensitive adhesive layer 2 is bonded to the convex surface of the resin lens blank 5 with the concave surface facing upward, and the convex surface of the substrate layer 1 is bonded to the low-melting-point metal located below to form the metal seat 4 .

[0069] The metal seat 4 is rotatably arranged to adjust the processing position or angle, which belongs to the prior art and will not be described in detail. After the lens is fixed, the lens grinding head 6 is used to process the resin lens blank 5 from above or in each set target direction. The low melting point metal seat 4 is rotated during grinding.

[0070] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. A colored protective film for lenses, characterized in that Only three layers are included: A release layer (3), a pressure-sensitive adhesive layer (2), and a substrate layer (1) are stacked in sequence; The pressure-sensitive adhesive layer (2) is used to directly contact with the resin lens blank to fix the lens; The substrate layer (1) is a substrate film made of PE or PP material; the inner surface of the substrate layer (1) is bonded to the pressure-sensitive adhesive layer (2), and the outer surface is an uneven surface having a microscopic concave-convex structure, and the outer surface is used to contact and bond with the low-melting-point metal to form a metal seat; The release layer (3) is releasably covered on the pressure-sensitive adhesive layer (2); The colors of the various layers are coordinated to form a colored protective film.

2. The colored protective film for lenses according to claim 1, characterized in that The outer surface of the substrate layer (1) that is in contact with the low melting point alloy is an uneven surface having a microscopic convex-concave structure after plasma treatment.

3. The colored protective film for lenses according to claim 1, characterized in that The substrate layer (1) and the release layer (3) are arranged in a variety of colors to form protective films of different colors.

4. The colored protective film for lenses according to claim 1, characterized in that The release layer (3), the pressure-sensitive adhesive layer (2), and the substrate layer (1) form a blue protective film that can be used for a car body lens, or form protective films of various colors for a convex lens of a microscope.

5. The colored protective film for lenses according to claim 1, characterized in that The surface energy of the outer surface of the substrate layer (1) is not less than 41 dyn / cm.

6. The colored protective film for lenses according to claim 1, characterized in that The thickness of the substrate layer (1) is 50 um-80 um.

7. The colored protective film for lenses according to claim 1, characterized in that The thickness of the pressure-sensitive adhesive layer (2) is 20-30 μm of adhesive colloid; the peeling force of the pressure-sensitive adhesive layer (2) is 300 g-700 g / 25 mm.

8. A garage lens fixing structure with a colored protective film for lenses as claimed in any one of claims 1 to 7, characterized in that: The concave surface of the pressure-sensitive adhesive layer (2) is directly bonded to the convex surface of the lens (5), and the convex surface of the substrate layer (1) is directly bonded to the low-melting-point metal to form a metal seat (4); the other end of the metal seat (4) away from the substrate layer (1) is rotatably arranged to adjust the processing position or angle of the lens.

9. The vehicle body lens fixing structure with a colored protective film for lenses according to claim 8, characterized in that The concave surface of the pressure-sensitive adhesive layer (2) is bonded to the convex surface of the lens (5) with the concave surface facing upward, and the convex surface of the substrate layer (1) is bonded to the low melting point metal located below to form a metal seat (4).

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