A product surface mirror pattern processing method

Abstract

This invention relates to the technical field of pattern forming, and more particularly to a method for processing mirror patterns on product surfaces. The method includes: polishing a substrate surface; attaching a pyrolytic film to a predetermined position on the substrate surface; sandblasting the substrate after film attachment to create a frosted outer surface; heating the sandblasted substrate to remove the pyrolytic film from its surface; and finally, surface treating the substrate after removing the pyrolytic film to obtain the desired mirror pattern. The processing method provided by this invention polishes the substrate surface to create a high-gloss mirror finish, and then attaches a pyrolytic film with a predetermined pattern. During sandblasting, the pyrolytic film protects the covered areas, thereby forming a mirror pattern on the predetermined area of ​​the substrate. This processing method is convenient, adaptable to various substrate shapes, and can reduce production costs.

Description

Technical Field

[0001] This invention relates to the technical field of pattern forming, and more particularly to a method for processing mirror patterns on the surface of a product. Background Technology

[0002] In consumer electronics, home décor, and industrial equipment, products made of stainless steel, aluminum, and glass often require mirror-finish logos or custom patterns to enhance product recognition and aesthetics. Existing methods for creating mirror patterns include CNC engraving, laser engraving, and exposure development. The appropriate method can be selected based on actual production needs and product materials.

[0003] However, in actual processing, CNC engraving faces an imbalance between precision and cost, laser engraving suffers from a conflict between efficiency and quality, and exposure and development processes are plagued by difficulties in process flow and yield. Furthermore, none of these three methods can effectively adapt to substrates with complex shapes. Therefore, there is an urgent need for a manufacturing process that can overcome these technical shortcomings to simultaneously meet the practical production requirements of clear mirror finish, controllable cost, high efficiency, and adaptability to complex substrates. Summary of the Invention

[0004] To address the problems mentioned above, this invention provides a method for processing mirror patterns on product surfaces, which can effectively improve the forming effect and efficiency of mirror patterns, while having a lower cost, and can also be adapted to the production of products with complex surfaces.

[0005] The solution adopted by this invention to solve its technical problem is: a method for processing mirror patterns on the surface of a product, comprising a substrate, wherein the substrate is a metal substrate or a glass substrate, and the processing method includes the following steps: The substrate is polished to achieve a mirror finish, and then cleaned to remove impurities and residues caused by polishing, ensuring that the substrate surface is clean enough to meet the requirements for film application. The pyrolytic film is adhered to a preset position on the substrate surface by a positioning film-applying mechanism, and air bubbles between the adhesive layer and the substrate are expelled to ensure a tight fit, so that the substrate surface forms a first surface covered by the pyrolytic film and a second surface not covered by the pyrolytic film. The substrate after film application is sandblasted to form a frosted surface with a preset roughness on the second surface of the substrate that is not covered by the pyrolysis film. The substrate after sandblasting is cleaned to remove the debris generated by sandblasting. Then, the substrate is heated and demolded to remove the pyrolytic film from the first surface of the substrate. The substrate after the pyrolysis film is peeled off is surface treated to finally form the desired mirror pattern on the first surface of the substrate.

[0006] Furthermore, prior to the step of attaching the pyrolytic film to a predetermined position on the substrate surface via the film-applying mechanism, the method further includes: The pyrolysis film is die-cut into the target pattern shape.

[0007] Furthermore, the pyrolytic film is an anti-sandblasting film, comprising a release film layer, a substrate layer, and a pyrolytic adhesive layer arranged sequentially from top to bottom. The substrate layer is any one of PET, PO, PP, PVC, or BOPP materials, and the pyrolytic adhesive layer is an acrylic adhesive. The pyrolysis temperature of the pyrolytic film is 90-180℃.

[0008] Furthermore, in the step of polishing the substrate, the polishing process is mechanical polishing or chemical polishing; Among them, the metal substrate is mechanically polished, and the glass substrate is chemically polished.

[0009] Furthermore, in the step of surface treatment of the substrate after peeling off the pyrolysis film, the surface treatment is anodizing or coating, the surface treatment of the metal substrate is either anodizing or coating, and the surface treatment of the glass substrate is coating.

[0010] Furthermore, in the step of sandblasting the substrate after film application, the abrasive is glass beads, aluminum shot, or ceramic sand, the sandblasting pressure is 0.4-0.6 MPa, and the sandblasting distance is 15-20 cm.

[0011] Furthermore, the substrate includes a planar substrate and an irregularly shaped substrate, wherein the planar substrate adopts a matrix-type sandblasting path and the irregularly shaped substrate adopts a spiral-type sandblasting path.

[0012] Furthermore, in the step of heating and demolding the substrate after sandblasting, the heating and demolding process is either immersion demolding or baking-type hot demolding, and the specific steps are as follows: Immersion demolding: Immerse the substrate in 95-100℃ deionized water for 3-5 minutes, then rinse with clean water to remove residual adhesive residue on the first surface, and finally dry with 60℃ hot air for 3 minutes. Baking-type demolding: Bake the substrate at 150-180℃ for 2-4 minutes, and after natural cooling, blow the first surface of the substrate with compressed air.

[0013] Furthermore, the positioning and film-applying mechanism includes a lower mold and an upper mold that can be lifted and lowered and is disposed on the top of the lower mold. The upper mold and the lower mold are adapted to the shape of the substrate. A positioning post is provided at the edge of the upper mold. The pyrolytic film is installed at the bottom of the upper mold and covers the substrate through the positioning post. When the upper mold and the lower mold are closed, the pyrolytic film is pressed and applied to the surface of the substrate.

[0014] Furthermore, the positioning and film-applying mechanism also includes a moving track, the end of which extends to the lower part of the upper mold, and the lower mold is movably mounted on the moving track. A gantry frame is provided in the middle of the moving track, and multiple sets of rollers arranged side by side are elastically connected below the gantry frame. When the lower mold moves along the moving track, the rollers are pressed against the surface of the substrate to roll the pyrolytic film.

[0015] In summary, the beneficial effects of the present invention are as follows: 1. This invention involves grinding and polishing the surface of a substrate, and then attaching a pyrolytic film with the desired pattern to a preset position on the substrate surface as a protective layer. After sandblasting the substrate surface, the pyrolytic film can cover the attached position, thus maintaining the mirror effect after grinding and polishing. After heating and removing the pyrolytic film, a corresponding mirror pattern can be formed on the substrate surface. This simplifies the processing steps of the mirror pattern and eliminates the need for high equipment investment, thereby reducing the production threshold and unit cost.

[0016] 2. The present invention uses a positioning and film-applying mechanism to adhere the pyrolytic film, enabling the pyrolytic film to be precisely applied to various base surfaces such as flat surfaces and curved pipes under the action of the positioning and film-applying mechanism. This allows the process of the present invention to be adapted to the processing of mirror patterns on various types of substrates, and can ensure accurate pattern positioning and improve processing precision.

[0017] 3. By setting a pyrolytic film as a protective layer, the pyrolytic film can be peeled off from the substrate surface after the substrate has been sandblasted. The peeling method is convenient, can ensure the peeling efficiency, and can maintain the mirror effect of the substrate and avoid damage to the mirror pattern of the substrate.

[0018] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a process flow diagram for this embodiment; Figure 2 This is a schematic diagram of the positioning and film application mechanism in this embodiment; Figure 3 This is a schematic diagram of the structure of the pyrolysis membrane when it is inverted in this embodiment.

[0020] In the diagram: 1. Lower mold; 2. Upper mold; 21. Positioning post; 3. Moving track; 4. Gantry frame; 5. Roller roller; 6. Pyrolytic film; 61. Release film layer; 62. Substrate layer; 63. Pyrolytic adhesive layer. Detailed Implementation

[0021] To make the content of this invention easier to understand, the invention will be further described below with reference to specific embodiments and accompanying drawings.

[0022] It should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., used herein to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Unless otherwise stated, "a plurality of" means two or more.

[0023] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of these terms in this invention based on the specific circumstances.

[0024] like Figure 1 As shown, this invention discloses a method for processing mirror patterns on product surfaces, which can process mirror logos or customized patterns on the surface of metal or glass substrates. This not only achieves a clear mirror effect but also effectively reduces production costs. Furthermore, it can adapt to substrates with complex shapes. The technical solution of this invention will be described in detail below with reference to specific embodiments.

[0025] In this embodiment, the substrate is a metal substrate or a glass substrate. The substrate shape can be flat, cylindrical, irregular, etc., and a mirror pattern can be processed on the surface by the following processing methods. The specific processing steps are as follows: S101-S105.

[0026] S101: Polish the substrate to achieve a mirror finish, then clean it to remove impurities and residues caused by polishing, ensuring the substrate surface cleanliness meets the requirements for film application.

[0027] Specifically, the polishing process in this embodiment is either mechanical polishing or chemical polishing. Mechanical polishing is used for metal substrates, while chemical polishing is used for glass substrates. In this embodiment, the substrate is a metal substrate. During polishing, a diamond polishing wheel is used to grind and polish the surface of the metal substrate. The polishing machine speed is set to 1800 r / min, resulting in a surface roughness Ra ≤ 0.15 μm and a mirror reflectivity ≥ 92% after polishing, achieving the preset mirror effect. Subsequently, a high-pressure water gun at a pressure of 0.3-0.5 MPa is used to pre-rinse the surface of the metal substrate to remove the floating wax and impurities generated during polishing. Finally, the cleaned substrate is placed in a hot air drying oven for drying at a temperature controlled at 60-80℃ for 5-8 minutes, ensuring no moisture residue remains on the substrate surface, thus completing the mirror finish on the metal substrate surface.

[0028] In another embodiment, the substrate is a glass substrate. During polishing, the glass substrate is immersed in a mixture of 5% sodium silicate and 3% sulfuric acid at room temperature for 15 minutes to achieve a surface roughness Ra ≤ 0.15 μm and a mirror reflectivity ≥ 92%, thereby achieving a preset mirror effect. Subsequently, the surface of the glass substrate is cleaned by alkaline spraying and rinsed with pure water to remove any remaining mixture. Finally, the substrate is dried with hot air to remove any remaining moisture, thus completing the mirror finish on the glass substrate surface.

[0029] S102: The pyrolytic film 6 is adhered to a preset position on the surface of the substrate by the positioning and film-applying mechanism, and the air bubbles between the adhesive layer and the substrate are discharged to ensure tight adhesion, so that the surface of the substrate is formed into a first surface covered by the pyrolytic film 6 and a second surface not covered by the pyrolytic film 6.

[0030] Specifically, before applying the film to the substrate in this embodiment, the pyrolytic film 6 is first die-cut into the shape of the target pattern using a die-cutting machine. Then, the die-cut pyrolytic film 6 is precisely applied to a preset position on the surface of the substrate using a positioning and film-applying mechanism, so that the surface of the substrate forms a first surface covered by the pyrolytic film 6 and a second surface not covered by the pyrolytic film 6.

[0031] Among them, the pyrolytic film 6 is an anti-sandblasting film with an anti-sandblasting strength ≥0.8Mpa. It can effectively protect the first surface of the substrate during the sandblasting process, so that after sandblasting, the first surface of the substrate can maintain a mirror effect under the shielding of the pyrolytic film, thereby achieving the formation of a mirror pattern. For example Figure 3As shown, the pyrolytic film 6 in this embodiment includes a release film layer 61, a substrate layer 62, and a pyrolytic adhesive layer 63 arranged sequentially from top to bottom. The substrate layer 62 can be any of PET, PO, PP, PVC, or BOPP materials, all of which have good anti-sandblasting properties and can effectively protect the first surface of the substrate. In this embodiment, the substrate layer 62 is made of PET material, which not only has good anti-sandblasting performance but is also relatively soft, making it easy to stably adhere to the surface of cylindrical and irregularly shaped substrates, thereby achieving the mirror pattern processing effect on various structural products in this embodiment. Furthermore, the pyrolytic adhesive layer 63 in this embodiment is made of acrylic resin with a pyrolysis temperature range of 95-180℃, which not only allows for stable adhesion to the substrate surface but also facilitates subsequent peeling and cleaning, thereby improving the efficiency of mirror processing.

[0032] like Figure 2 As shown, in order to achieve accurate and rapid adhesion of the pyrolysis film 6, this embodiment also provides a positioning film-adhesive mechanism, so that after the pyrolysis film 6 is pre-die-cut into the corresponding pattern, it can be accurately and tightly adhered to the surface of the substrate through the positioning film-adhesive mechanism, thereby achieving protection of the first surface of the substrate.

[0033] Specifically, the positioning and film-applying mechanism of this embodiment includes an upper mold 2 that can be raised and lowered and a lower mold 1 disposed at the bottom of the upper mold 2. Both the upper mold 2 and the lower mold 1 are provided with cavities that are adapted to the shape and structure of the substrate. When the upper mold 2 and the lower mold 1 are closed, the substrate can be adapted to the cavity and thus fixed in a preset direction and position, thereby facilitating the precise application of the pyrolytic film 6. Furthermore, in this embodiment, positioning posts 21 are provided around the edges of the upper mold 2, and positioning holes are provided around the release film layer 61 of the die-cut pyrolytic film 6. This allows the pyrolytic film 6 to be precisely installed on the bottom of the upper mold 2 and cover the cavity of the upper mold 2 through the positioning posts 21 and positioning holes. At this time, the pyrolytic film 6 is located above the substrate and the pattern precisely corresponds to the preset position on the surface of the substrate. When the upper mold 2 is lowered and closed with the lower mold 1, the upper mold 2 can press the pyrolytic film 6 onto the preset position on the surface of the substrate. As the upper mold 2 moves upward, the release film layer 61 is peeled off from the pyrolytic film 6, thereby precisely attaching the pyrolytic film 6 to the corresponding position on the substrate.

[0034] In this embodiment, both the upper mold 2 and the lower mold 1 include a mounting base and a molding block detachably connected to the mounting base by bolts. This allows for the application of film to substrates of different shapes by replacing the molding block, thus facilitating precise film application to irregularly shaped substrates. Furthermore, the molding block in this embodiment is a flexible molding block made of silicone. When the upper mold 2 and the lower mold 1 are closed, the flexible molding block can compress the pyrolytic film 6, thereby facilitating the stable adhesion of the pyrolytic film 6.

[0035] Furthermore, the positioning and film-applying mechanism of this embodiment also includes a moving track 3 extending to the bottom of the upper mold 2. The lower mold 1 is disposed on the moving track 3 and can move along the moving track 3, so that during the pyrolytic adhesive bonding process, the lower mold 1 can be moved out from the bottom of the upper mold 2 via the moving track 3, thereby facilitating the replacement of the pyrolytic film 6 and the substrate and improving processing efficiency. In addition, in order to further improve the tight adhesion between the pyrolytic film 6 and the substrate, a gantry frame 4 is also provided in the middle of the moving track 3 in this embodiment, and a rolling roller 5 is elastically connected below the crossbar of the gantry frame 4. So that after the pyrolytic film 6 is adhered to the surface of the substrate, when the lower mold 1 moves along the moving track 3 to exit the bottom of the upper mold 2 to replace the substrate, the lower mold 1 can carry the substrate through the gantry frame 4. At this time, the rolling roller 5 is pressed tightly against the surface of the substrate under the action of the spring force, and the pyrolytic film 6 is rolled at a uniform speed to remove air bubbles, thereby eliminating the bonding gap of the pyrolytic film 6 and ensuring the uniformity of the adhesion of the pyrolytic film 6.

[0036] Furthermore, in this embodiment, multiple sets of rollers 5 are arranged side by side, so that when applying film to irregularly shaped substrates, each roller 5 arranged side by side can roll on the surface of the irregularly shaped substrate separately, thereby further improving the stability of the adhesion between the pyrolytic film 6 and the surface of the irregularly shaped substrate. S103: Sandblast the substrate after film application to form a frosted surface with a preset roughness on the second surface of the substrate not covered by the pyrolysis film 6.

[0037] Specifically, when sandblasting a planar substrate, the substrate with the film attached is fixed on the sandblasting bracket, and the sandblasting machine is started so that the nozzle moves evenly along the matrix sandblasting path to sandblast the surface of the substrate. At this time, the second surface of the substrate not covered by the pyrolytic film 6 is polished by abrasive to form a frosted surface with a roughness of Ra=1.5-2.0μm, while the first surface of the substrate is covered by the anti-sandblasting pyrolytic film 6, so it can avoid being polished by abrasive to maintain the mirror effect, thereby forming a mirror pattern on the surface of the substrate and completing the sandblasting treatment of the planar substrate surface.

[0038] When sandblasting irregularly shaped substrates, the nozzle is moved evenly along a spiral sandblasting path, allowing the abrasive to repeatedly polish the surface of the irregularly shaped substrate under the action of the spiral path, thus making the sandblasting treatment of the irregularly shaped substrate more uniform.

[0039] In this embodiment, the sandblasting process uses glass beads of #120-#180 specifications, which not only effectively grinds the metal substrate but is also recyclable, thus reducing costs. Furthermore, the sandblasting pressure is set to 0.4-0.6 MPa, the sandblasting distance is controlled at 15-20 cm, and the nozzle movement speed is 5-15 mm / s, achieving efficient grinding of the substrate's second surface while ensuring uniform sandblasting.

[0040] In other embodiments, ceramic abrasive of #150-#200 size can be used for sandblasting of glass substrates. The round particles avoid scratching the glass mirror surface, thereby reducing the occurrence of cracks during sandblasting of glass substrates.

[0041] S104: The substrate after sandblasting is cleaned to remove the debris generated by sandblasting from the surface of the substrate. Then, the substrate is heated and demolded to remove the pyrolytic film from the first surface of the substrate.

[0042] Specifically, the heating demolding process in this embodiment includes baking-type hot demolding or immersion-type demolding. In baking-type demolding, the sandblasted substrate is placed in a hot air oven at a temperature of 150-180°C for 2-4 minutes, causing the pyrolytic adhesive layer 63 of the pyrolytic film 6 to de-adhere and detach. Subsequently, the substrate after the pyrolytic film 6 has detached is removed from the oven and allowed to cool naturally to room temperature. Then, compressed air at 0.2 MPa is used to blow the surface of the substrate to remove a small amount of sand particles adhering to the surface. Finally, the substrate is rinsed with clean water and dried to complete the removal of the pyrolytic film 6, thereby forming a mirror pattern on the first surface of the substrate.

[0043] When using immersion-type demolding, the substrate is immersed in deionized water at 95-100℃ for 3-5 minutes, so that the pyrolytic adhesive layer 63 can be debonded by the heat under the action of water temperature and thus detached from the surface of the glass substrate. Then, the substrate after the pyrolytic film 6 has been detached is taken out of the water tank and dried with hot air at 60℃ for 3 minutes to remove all moisture from the surface of the substrate, thus completing the removal of the pyrolytic film 6.

[0044] S105: The substrate after peeling off the pyrolysis film 6 is surface treated to finally form the desired mirror pattern on the first surface of the substrate.

[0045] Specifically, in this embodiment, the surface treatment of the substrate is either anodizing or coating. The surface treatment of the metal substrate is either anodizing or coating, while the surface treatment of the glass substrate is coating.

[0046] During the anodizing process, the anodizing voltage is 12-15V and the oxidation time is 20min, which allows an oxide film with a thickness of 10-15μm to be formed on the mirror pattern surface of the first surface of the substrate. This improves the corrosion resistance without affecting the mirror effect of the first surface, thus completing the processing of forming the required mirror pattern on the first surface of the substrate.

[0047] When performing the coating process, after the substrate is dried, a transparent acrylic coating is sprayed onto the first surface using a spraying device. The spraying pressure is 0.2-0.3 MPa and the gun distance is 15-20 cm, so that a uniform coating of 5-8 μm can be formed on the first surface. Then, it is cured with hot air at 120-180℃ for 20-40 minutes, and finally cooled and cleaned to complete the surface treatment of the substrate.

[0048] The mirror processing method for the substrate provided in this embodiment forms a high-gloss mirror effect by polishing the surface of the substrate. Then, a pyrolytic film 6 with a preset pattern is pasted onto the surface of the substrate for masking. Subsequently, the second surface is polished by sandblasting. After the pyrolytic film 6 is peeled off, a preset mirror pattern can be formed on the first surface. This achieves the processing of mirror patterns on the surface of the substrate, effectively improving the forming effect and efficiency of mirror patterns, with low cost. At the same time, it can be adapted to substrates with complex surfaces and has a wide range of applications.

[0049] The embodiments described above are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and modifications made by those skilled in the art based on the invention shall fall within the scope of protection of the present invention.

Claims

1. A method for processing a mirror pattern on the surface of a product, comprising a substrate, wherein the substrate is a metal substrate or a glass substrate, characterized in that, The processing method includes the following steps: The substrate is polished to achieve a mirror finish, and then cleaned to remove impurities and residues caused by polishing, ensuring that the substrate surface is clean enough to meet the requirements for film application. The pyrolytic film (6) is adhered to a preset position on the surface of the substrate by the positioning film-applying mechanism, and the air bubbles between the adhesive layer and the substrate are discharged to ensure tight adhesion, so that the surface of the substrate is formed with a first surface covered by the pyrolytic film (6) and a second surface not covered by the pyrolytic film (6). The substrate after the film is applied is sandblasted so that the second surface of the substrate not covered by the pyrolysis film (6) forms a frosted surface with a preset roughness. The substrate after sandblasting is cleaned to remove the debris generated by sandblasting. Then the substrate is heated and demolded so that the pyrolysis film (6) is separated from the first surface of the substrate. The substrate after the pyrolysis film (6) is peeled off is surface treated to finally form the desired mirror pattern on the first surface of the substrate.

2. The method for processing a mirror pattern on a product surface according to claim 1, characterized in that, Before the step of attaching the pyrolytic film (6) to a predetermined position on the substrate surface via the film-applying mechanism, the method further includes: The pyrolysis film (6) is die-cut into the target pattern shape.

3. The method for processing mirror patterns on the surface of a product according to claim 1, characterized in that, The pyrolytic film (6) is an anti-sandblasting film, comprising a release film layer (61), a substrate layer (62) and a pyrolytic adhesive layer (63) arranged sequentially from top to bottom. The substrate layer is any one of PET, PO, PP, PVC or BOPP material, and the pyrolytic adhesive layer (63) is acrylic adhesive. The pyrolysis temperature of the pyrolytic film (6) is 90-180℃.

4. The method for processing a mirror pattern on a product surface according to claim 1, characterized in that, In the step of polishing the substrate, the polishing process is mechanical polishing or chemical polishing; Among them, the metal substrate is mechanically polished, and the glass substrate is chemically polished.

5. The method for processing a mirror pattern on a product surface according to claim 1, characterized in that, In the step of surface treatment of the substrate after peeling off the pyrolysis film (6), the surface treatment is anodizing or coating, the surface treatment of the metal substrate is either anodizing or coating, and the surface treatment of the glass substrate is coating.

6. The method for processing a mirror pattern on a product surface according to claim 1, characterized in that, In the step of sandblasting the substrate after film application, the abrasive is glass beads, aluminum shot or ceramic sand, the sandblasting pressure is 0.4-0.6MPa, and the sandblasting distance is 15-20cm.

7. The method for processing a mirror pattern on a product surface according to claim 6, characterized in that, The substrate includes a planar substrate and an irregularly shaped substrate. The planar substrate adopts a matrix-type sandblasting path, and the irregularly shaped substrate adopts a spiral sandblasting path.

8. The method for processing a mirror pattern on a product surface according to claim 1, characterized in that, In the step of heating and demolding the substrate after sandblasting, the heating and demolding process is either immersion demolding or baking-type hot demolding, and the specific steps are as follows: Immersion demolding: Immerse the substrate in 95-100℃ deionized water for 3-5 minutes, then rinse with clean water to remove residual adhesive residue on the first surface, and finally dry with 60℃ hot air for 3 minutes. Baking-type demolding: Bake the substrate at 150-180℃ for 2-4 minutes, and after natural cooling, blow the first surface of the substrate with compressed air.

9. The method for processing a mirror pattern on a product surface according to claim 1, characterized in that, The positioning and film-applying mechanism includes a lower mold (1) and an upper mold (2) that can be lifted and set on the top of the lower mold (1). The upper mold (2) and the lower mold (1) are adapted to the shape of the substrate. The upper mold (2) is provided with a positioning post (21) at its edge. The pyrolytic film (6) is installed on the bottom of the upper mold (2) through the positioning post (21) and covers the substrate. When the upper mold (2) and the lower mold (1) are closed, the pyrolytic film (6) is pressed and applied to the surface of the substrate.

10. A method for processing a mirror pattern on a product surface according to claim 9, characterized in that, The positioning and film-applying mechanism also includes a moving track (3), the end of which extends to the lower part of the upper mold (2). The lower mold (1) is movably mounted on the moving track (3). A gantry frame (4) is provided in the middle of the moving track (3). Multiple sets of rollers (5) are elastically connected below the gantry frame (4). When the lower mold (1) moves along the moving track (3), the rollers (5) press the pyrolytic film (6) against the substrate surface.

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