Reflective film formed by hot-pressing wiredrawing

Abstract

The utility model provides a reflective film formed by hot-pressing wiredrawing. The reflective film comprises a film body unit, the film body unit correspondingly forms a reflective surface after the hot-pressing wire drawing operation of an external wire drawing roller; the wire drawing roller cuts in the direction orthogonal to the film body unit in order and discontinuously, so that the wire drawing line on the wire drawing roller further performs heat transfer printing on the end face of the film body unit, and wire drawing type light reflecting points are directly printed on the light reflecting surface, so that a complete light reflecting film structure is constructed; by means of the accurate hot-pressing wire drawing technology, the wire-drawing type light reflecting points on the light reflecting face can effectively improve the light reflecting effect, the visibility of the light reflecting film under the low-light condition is enhanced, the die opening mode of a die is omitted, the wire-drawing type light reflecting points are directly formed in the hot-pressing wire drawing process, high uniformity and consistency are achieved, and the production efficiency is improved. Therefore, the surface of the reflective film is more stable, the problem of light scattering caused by uneven surface is reduced, the manufacturing process of the reflective film is simplified, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of optical reflective films, in particular to a reflective film formed by hot-pressing and drawing. Background Art

[0002] Reflective sheeting can reflect light using optical principles. It is usually a thin film material and is often used in traffic signs, vehicle license plates, road markings and other places where visibility needs to be improved in dark or low-light environments.

[0003] Retroreflective sheeting works by reflecting incident light back in the direction of the light source through its embedded microscopic glass beads or prismatic structures, making objects more visible at night or in low-light conditions. Its types and performance vary depending on the application, and it can be mainly divided into standard, microprismatic, and high-strength types, each suitable for different environments and requirements. Microprismatic reflective sheeting, in particular, utilizes tiny prismatic structures to reflect light, offering advantages such as excellent reflective properties and strong directional light.

[0004] However, during the manufacturing process, the core technology of microprismatic reflective sheeting lies in the tiny size and high precision of the prism structure, which places extremely high demands on mold manufacturing. High-precision molds are required to form a consistent prism structure, which is inherently complex and difficult to manufacture, resulting in high mold costs. Furthermore, to ensure high light reflectivity and durability, high-quality molds are typically required for production.

[0005] Therefore, the mold production method used for reflective film has poor manufacturing accuracy or maintenance, and the shape of the reflective structure is prone to unevenness, resulting in a decrease in the reflection effect, which in turn affects the quality of light reflection and reduces the overall reflective performance of the film. Utility Model Content

[0006] In view of this, the purpose of the present invention is to provide a reflective film formed by hot-pressing and drawing to solve the above problems.

[0007] The utility model adopts the following scheme:

[0008] The present application provides a reflective film formed by hot-pressing wire drawing, comprising a film unit; the film unit forms a corresponding reflective surface after the hot-pressing wire drawing operation of an external wire drawing roller; the wire drawing roller cuts into the film unit in an orderly and intermittent manner along a direction orthogonal to the film unit, so that the wire drawing line on the wire drawing roller further performs thermal transfer on the end face of the film unit, thereby directly printing on the reflective surface to form wire-like reflective spots, thereby constructing a complete reflective film structure.

[0009] As a further improvement, the drawing line of the drawing roller has a line width of 300-800um, an interval of 300-800um, a depth of 50-200um, and a length of 10-100mm.

[0010] As a further improvement, the membrane unit is made of PVC material with a hardness of 24-30 Pa and a thickness of 150-250 um.

[0011] As a further improvement, the drawing roller is formed into a plurality of irregular triangular pyramids through UV technology, which are sunk into the membrane unit at multiple angles, and the reflective surface is squeezed into continuous point-shaped drawing-like reflective points.

[0012] As a further improvement, the height of the triangular pyramid is 50-100 μm, so as to form a tiny prism concave surface on the reflective surface.

[0013] As a further improvement, the drawing temperature of the thermal transfer is 160-220°C.

[0014] As a further improvement, the film unit is a PE film or a PP film.

[0015] As a further improvement, the width dimension of the membrane unit is smaller than the length dimension of the drawing roller.

[0016] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0017] 1. The reflective film formed by hot-pressing and drawing in the present application, through a precise hot-pressing and drawing process, has brushed reflective spots on the reflective surface that can effectively improve the light reflection effect and enhance the visibility of the reflective film in low-light conditions. The mold opening method is eliminated, and the brushed reflective spots are directly formed in the hot-pressing and drawing process. They have a high degree of uniformity and consistency, making the reflective film surface more stable and reducing the problem of light scattering caused by surface unevenness. Therefore, there is no need for complex mold manufacturing. The precise operation of the drawing roller can achieve efficient production and formation of the reflective structure, simplifying the production process of the reflective film and reducing manufacturing costs.

[0018] 2. Through the hot pressing wire drawing operation, the orderly cutting and intermittent operation of the wire drawing roller make the generation of reflective spots more efficient. The one-time molding process shortens the production cycle and significantly improves production efficiency. Since the reflective spots are directly printed on the surface of the film unit through thermal transfer, they have strong adhesion and wear resistance, thereby extending the service life of the reflective film, especially in harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a cross-sectional view of a reflective film formed by hot-pressing and drawing according to an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of a drawing roller for a reflective film formed by hot-press drawing according to an embodiment of the present invention;

[0021] Figure 3 yes Figure 2 An enlarged effect diagram of the end face of the drawing roller;

[0022] Figure 4 This is an enlarged effect diagram of the reflective surface of the film unit of the reflective film after the hot pressing and drawing operation of the embodiment of the utility model;

[0023] Figure 5 yes Figure 4 Schematic diagram of the photo under the microscope.

[0024] icon:

[0025] 1-Membrane unit; 2-Drawing roller. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] Example

[0028] Combine Figures 1 to 5 This embodiment provides a reflective film formed by hot-pressing and drawing, comprising a film unit 1. The film unit 1 forms a corresponding reflective surface after the hot-pressing and drawing operation of the external drawing roller 2. The drawing roller 2 is cut into the film unit 1 in an orderly and intermittent manner along the direction perpendicular to the film unit 1 (the drawing roller 2 is located directly above the film unit 1, and the two are perpendicular to each other, with at least one side moving closely relative to the other), so that the drawing line on the drawing roller 2 is further thermally transferred to the end face of the film unit 1, thereby directly printing on the reflective surface to form drawing-like reflective spots, thereby constructing a complete reflective film structure.

[0029] The reflective film mentioned above is processed through a precise hot-pressing wire drawing process, and the wire-like reflective spots on the reflective surface can effectively improve the reflection effect of light and enhance the visibility of the reflective film under low-light conditions. The mold opening method is eliminated, and the wire-like reflective spots formed directly through the hot-pressing wire drawing process have a high degree of uniformity and consistency, making the surface of the reflective film more stable and reducing the light scattering problem caused by surface unevenness. Therefore, there is no need for complex mold manufacturing. The efficient production of the reflective structure can be achieved through the precise operation of the wire drawing roller 2, which simplifies the production process of the reflective film and reduces the manufacturing cost.

[0030] Moreover, through the hot pressing drawing operation, the orderly cutting and intermittent operation of the drawing roller 2 makes the generation of reflective spots more efficient. The one-time forming process shortens the production cycle and significantly improves production efficiency. Since the reflective spots are directly printed on the surface of the film unit 1 through thermal transfer, they have strong adhesion and wear resistance, thereby extending the service life of the reflective film, especially in harsh environments.

[0031] In this embodiment, the wire drawing line of the wire drawing roller 2 has a line width of 300-800um, an interval of 300-800um, a depth of 50-200um, and a length of 10-100mm. By controlling the line width, interval, depth and length of the wire drawing line, the size, density and shape of the reflective points can be accurately adjusted, thereby optimizing the reflective effect of the reflective film and improving the overall reflective performance. And the reasonable setting of the wire drawing line interval and depth enables each reflective point to be evenly distributed on the surface, avoiding excessive concentration or dispersion of light, and improving the reflection efficiency and visibility of light. Obviously, the reflective lines at different angles, by controlling the width of the reflective lines, achieve the reflection of a single reflective unit, thereby achieving a continuous point-like reflective effect in each different observation direction.

[0032] In this embodiment, the membrane unit 1 is made of PVC with a hardness of 24-30 Pa and a thickness of 150-250 μm. Preferably, the membrane unit 1 has a hardness of 25 Pa and a thickness of 200 μm. PVC membranes of this specification can effectively withstand harsh weather conditions such as sunlight, rain, and wind, and have good UV resistance, thereby maintaining long-term reflective performance in outdoor applications.

[0033] Furthermore, the drawing roller 2 forms a plurality of irregular triangular pyramids through UV technology, which are sunk into the membrane unit 1 at various angles, squeezing the reflective surface into a continuous, drawn, reflective point. As a result, the UV-molded triangular pyramids of higher hardness sink into the lower hardness PVC substrate at different angles in the drawing direction, squeezing the overall reflective effect of the plane into the desired specific reflective points.

[0034] Preferably, the triangular pyramids are 50-100 μm in height, forming a tiny prismatic concave surface on the reflective surface. This significantly enhances the reflection and focusing capabilities of light, improving the overall reflective efficiency of the reflective film and making it more visible at night or in low-light environments. Furthermore, the drawing temperature for the thermal transfer is 160-220°C. This ensures a good thermal transfer between the drawing line and the film unit 1, forming a stable and uniform reflective point.

[0035] In other embodiments, the film unit 1 is a PE film or a PP film, which all fall within the protection scope of this case.

[0036] It should be noted that the width of the film unit 1 is smaller than the length of the drawing roller 2. The fact that the width of the film unit 1 is smaller than the length of the drawing roller 2 allows the drawing roller 2 to cover a larger area during processing, ensuring the uniform distribution of each reflective point and helping to form a continuous and consistent reflective structure.

[0037] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention fall within the protection scope of the present invention.

Claims

1. A reflective film formed by hot pressing and drawing, comprising a film unit; characterized in that: The film unit forms a corresponding reflective surface after the hot pressing and drawing operation of the external drawing roller; Among them, the drawing roller cuts into the film unit in an orderly and intermittent manner along the direction perpendicular to the film unit, so that the drawing line on the drawing roller further performs thermal transfer on the end face of the film unit, thereby directly printing on the reflective surface to form drawing-like reflective spots, thereby constructing a complete reflective film structure.

2. The reflective film formed by hot-pressing and drawing according to claim 1, characterized in that: The wire drawing line of the wire drawing roller has a line width of 300-800um, an interval of 300-800um, a depth of 50-200um, and a length of 10-100mm.

3. The reflective film formed by hot-pressing and drawing according to claim 1, characterized in that: The membrane unit is made of PVC material, has a hardness of 24-30 Pa and a thickness of 150-250 μm.

4. The reflective film formed by hot-pressing and drawing according to claim 1, characterized in that: The drawing roller is formed into a plurality of irregular triangular pyramids through UV technology, which are sunk into the membrane unit at multiple angles, and the reflective surface is squeezed into continuous drawn reflective points.

5. The reflective film formed by hot-pressing and drawing according to claim 4, characterized in that: The height of the triangular pyramid is 50-100 μm, so as to form a tiny prism concave surface on the reflective surface.

6. The reflective film formed by hot-pressing and drawing according to claim 1, characterized in that: The drawing temperature of the thermal transfer is 160-220°C.

7. The reflective film formed by hot-pressing and drawing according to claim 1, characterized in that: The film unit is a PE film or a PP film.

8. The reflective film formed by hot-pressing and drawing according to claim 1, characterized in that: The width dimension of the film unit is smaller than the length dimension of the drawing roller.

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