Manufacturing process of positioning cold stamping film and positioning cold stamping film

Abstract

The invention discloses a manufacturing process of a positioning cold stamping film and the positioning cold stamping film. The manufacturing process comprises the following steps that S1, the surface of a PET film is coated with a release layer, the PET film is coated through a first coating mechanism to form a first release layer, and the surface of the first release layer is coated through a second coating mechanism to form a second release layer; s2, shaping: shaping the second release layer through a shaping roller so as to enable the second release layer to form a concave part; s3, the surface of the second release layer is coated with a color layer, the color layer is embedded into the concave part, and the color layer right opposite to the concave part is deep in color; s4, mold pressing: forming an information layer on the surface of the color layer; s5, performing corona: performing corona on the surface of the information layer; s6, plating zinc sulfide to form a dielectric layer; s7, coating a back adhesive layer to form the back adhesive layer; and S8, rolling is conducted. The concave-convex surface is formed at the release layer, so that positioning is facilitated during mold pressing, deep and shallow pattern information can be formed on the surface after mold pressing and aluminum plating, the pattern is more layered, and the pattern effect can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cold stamping films, and more specifically, to a manufacturing process and a positioning cold stamping film of a positioning cold stamping film. Background Art

[0002] Cold stamping refers to pasting the graphics and texts to be hot stamped onto the surface of a substrate through an adhesive under normal temperature conditions. In the production process of existing cold stamping films, the embossing pattern effect on their surfaces is determined by the patterns of the embossing rollers and the coating media, and the pattern effect is relatively single. Therefore, there is an urgent need to improve this situation. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned existing technologies, and provide a manufacturing process and a positioning cold stamping film of a positioning cold stamping film, which form concave and convex surfaces at the release layer, can not only facilitate positioning during embossing, but also form deep and shallow pattern information on the surface after embossing and aluminizing, making the patterns more hierarchical and conducive to improving the pattern effect.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A manufacturing process of a positioning cold stamping film includes the following steps:

[0005] S1. Coating a release layer on the surface of a PET film: The release layer is coated twice by a double-coating device, which includes a first coating mechanism and a second coating mechanism. The PET film is coated by the first coating mechanism to form a first release layer, and a second release layer is coated on the surface of the first release layer by the second coating mechanism;

[0006] S2. Shaping: The second release layer is shaped by a shaping roller so that the second release layer forms a recessed part;

[0007] S3. Coating a color layer on the surface of the second release layer: A coating machine is used to coat on the surface of the second release layer to form a color layer, and the color layer is embedded in the recessed part, and the color of the color layer facing the recessed part is deeper;

[0008] S4. Embossing: An embossing machine performs positioning embossing on the surface of the color layer according to the color depth on the surface of the color layer to form an information layer on the surface of the color layer;

[0009] S5. Corona treatment: Corona treatment is performed on the surface of the information layer;

[0010] S6. Coating zinc sulfide: Zinc sulfide is coated on the surface of the information layer to form a dielectric layer;

[0011] S7. Coating an adhesive layer: A coating machine is used to coat the dielectric layer to form an adhesive layer;

[0012] S8. Rewinding.

[0013] Further, in step S1, the first coating mechanism includes a first coating roller, and the second coating mechanism includes a second coating roller. The first coating roller is a 200-mesh ceramic roller with a wet coating amount of 5.75 g / ㎡ - 6.25 g / ㎡. The second coating roller is a 300-mesh ceramic roller with a wet coating amount of 3.25 g / ㎡ - 3.75 g / ㎡. The speed of the secondary coating equipment is 80 m / min - 100 m / min.

[0014] Further, after step S2 and after step S3, the PET film needs to be dried by a multi-stage dryer. The multi-stage dryer is a five-stage dryer. The temperature of each stage of the multi-stage dryer after step S2 is 70 / 110 / 155 / 165 / 155 / 110 °C, and the temperature of each stage of the multi-stage dryer after step S3 is 70 / 110 / 160 / 165 / 160 / 110 °C.

[0015] Further, in step S3, the coating roller of the coater is a 250-mesh ceramic roller with a wet coating amount of 5 g / ㎡ - 5.5 g / ㎡ and a dry amount of 1.35 g / ㎡ - 1.45 g / ㎡.

[0016] Further, in step S4, the gap between the die-cutting rollers of the die-pressing machine is less than 0.2 mm, the lateral shrinkage of die-pressing is 3 mm - 7 mm, the die-pressing temperature is 170 °C - 185 °C, the die-pressing pressure is 30 N - 40 N, the unwind tension is 8.0 N - 9.0 N, and the rewind tension is 5.0 N - 6.0 N.

[0017] Further, in step S7, the coating roller of the coater is a 300-mesh screen roller with a wet coating amount of 3.2 g / ㎡ - 3.5 g / ㎡. After coating, it is dried by a multi-stage dryer. The temperature of each stage of the multi-stage dryer is: 90 - 120 - 130 - 130 - 100 °C.

[0018] Further, after passing through the first coating mechanism, the PET film and the film after passing through the second coating mechanism are pre-dried by a pre-dryer. The pre-dryer includes a first drying channel, a second drying channel, and a third drying channel. The PET film passes through the first coating mechanism, the first drying channel, the second drying channel, the second coating mechanism, and the third drying channel in sequence. The first drying channel and the second drying channel are used to dry the first release layer, and the third drying channel is used to pre-dry the second release layer.

[0019] Further, the secondary coating equipment further includes a coating tank. The first coating roller and the second coating roller are both located in the coating tank. The coating tank includes a partition net. The second coating roller is located inside the partition net, and the position of the second coating roller is higher than that of the first coating roller.

[0020] Further, the shaping roller includes a plurality of convex ribs, and a groove is provided between two adjacent convex ribs. When the shaping roller rotates, the convex ribs contact the second release layer, so as to form a recessed portion on the surface of the second release layer;

[0021] A cleaning roller is provided on the side surface of the shaping roller. The cleaning roller includes a threaded shaft, a sliding sleeve is sleeved outside the threaded shaft, the sliding sleeve is in threaded connection with the threaded shaft, a cleaning sleeve is sleeved outside the sliding sleeve, the cleaning sleeve is connected to the sliding sleeve through a bearing, and the side surface of the sliding sleeve abuts against the side surface of the shaping roller.

[0022] A positioning cold stamping film includes a PET film. A first release layer is provided on one side surface of the PET film. A second release layer is provided on the surface of the first release layer. The second release layer includes a plurality of recessed portions. A color layer is provided on the surface of the second release layer. An information layer is provided on the surface of the color layer. A dielectric layer is provided on the surface of the information layer. An adhesive layer is provided on the surface of the dielectric layer.

[0023] In summary, the present invention has the following beneficial effects:

[0024] The PET film 1 and the first release layer can be peeled off. The materials of the first release layer and the second release layer are the same and are formed by secondary coating. When a color layer is compounded on the surface of the second release layer, the thickness of the color layer at the position directly opposite the recessed portion is large, the light transmittance at this position is low, and the color is relatively deep. The thickness of the color layer in the area between two adjacent recessed portions is small and the color is light. By forming deep and shallow colors, positioning can be performed during hot stamping, realizing positioning hot stamping, which is beneficial to improving the hot stamping accuracy. Moreover, the information layer formed after hot stamping has different effects at the deep and shallow positions of the color layer. After zinc sulfide plating, its visual effect is amplified, making the pattern information of the information layer more hierarchical and greatly improving the visual effect of the cold stamping film. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the cold stamping film;

[0026] Figure 2 It is a manufacturing flow chart of the cold stamping film;

[0027] Figure 3 It is a schematic structural diagram of the secondary coating equipment;

[0028] Figure 4 It is a schematic structural diagram of the pre-dryer;

[0029] Figure 5 It is a cross-sectional view of the pre-dryer;

[0030] Figure 6 It is a cross-sectional view of the cleaning roller;

[0031] Figure 7 For Figure 6 Partial schematic diagram of

[0032] Figure 8 It is a partial sectional view of the shaping roller.

[0033] Reference numerals: 1, PET film; 11, first release layer; 12, second release layer; 13, recessed part; 14, color layer; 15, information layer; 16, dielectric layer; 17, adhesive layer; 2, secondary coating equipment; 21, first conveying roller; 22, second conveying roller; 23, third conveying roller; 24, fourth conveying roller; 3, coating tank; 31, separating net; 4, first coating mechanism; 41, first coating roller; 42, first scraping roller; 43, first scraping plate; 5, second coating mechanism; 51, second coating roller; 52, second scraping roller; 53, second scraping plate; 6, shaping roller; 61, rib; 62, groove; 7, cleaning roller; 71, threaded shaft; 72, sliding sleeve; 73, cleaning sleeve; 74, guide rod; 75, gear; 76, bracket; 8, pre-dryer; 81, first drying channel; 82, second drying channel; 83, third drying channel; 84, housing; 85, first heating tube; 86, second heating tube; 87, third heating tube; 88, liquid inlet pipe; 89, liquid outlet pipe; 9, multi-stage dryer. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] As Figures 1 to 2 shown, this embodiment discloses a positioning cold stamping film, including a PET film 1. A first release layer 11 is provided on one side surface of the PET film 1. A second release layer 12 is provided on the surface of the first release layer 11. The second release layer 12 includes a plurality of recessed parts 13. A color layer 14 is provided on the surface of the second release layer 12. Part of the color layer 14 is embedded in the recessed parts 13. An information layer 15 is provided on the surface of the color layer 14. A dielectric layer 16 is provided on the surface of the information layer 15. An adhesive layer 17 is provided on the surface of the dielectric layer 16.

[0036] The PET film 1 and the first release layer 11 can be peeled off. The first release layer 11 and the second release layer 12 are made of the same material and are formed by secondary coating. When the color layer 14 is laminated on the surface of the second release layer 12, the thickness of the color layer 14 is large at the position facing the recess 13, the light transmittance at this position is low, and its color is deep. The thickness of the color layer 14 in the area between two adjacent recesses 13 is small and the color is light. By forming deep and shallow colors, positioning can be carried out during embossing, realizing positioning embossing, which is beneficial to improving the embossing accuracy. Moreover, the information layer 15 formed after embossing presents different effects at the deep and shallow parts of the color layer 14. After zinc sulfide plating, its visual effect is magnified, making the pattern information of the information layer 15 more hierarchical and greatly improving the visual effect of the cold stamping film.

[0037] As Figures 3 to 8 shown, the manufacturing process of this positioning cold stamping film in the present invention includes the following steps:

[0038] S1. Coating a release layer on the surface of the PET film 1: to form the first release layer 11 and the second release layer 12;

[0039] S2. Shaping: The second release layer 12 is shaped by a shaping roller 6 so that the second release layer 12 forms recesses 13;

[0040] S3. Coating the color layer 14 on the surface of the second release layer 12: Coating on the surface of the second release layer 12 by a coater to form the color layer 14. The coater is an existing device. The coating roller of the coater is a 250-mesh ceramic roller, the wet coating amount is 5 g / ㎡ - 5.5 g / ㎡, and the dry amount is 1.35 g / ㎡ - 1.45 g / ㎡. The color layer 14 is embedded in the recesses 13, and the color layer 14 at the position facing the recesses 13 is deep in color;

[0041] After step S2 and after step S3, the PET film 1 needs to be dried by a multi-stage dryer 9. The multi-stage dryer 9 is a five-stage dryer. The temperature of each stage of the multi-stage dryer 9 after step S2 is 70 / 110 / 155 / 165 / 155 / 110 °C, and the temperature of each stage of the multi-stage dryer 9 after step S3 is 70 / 110 / 160 / 165 / 160 / 110 °C;

[0042] S4. Embossing: The embossing machine performs positioning embossing on the surface of the color layer 14 according to the color depth on the surface of the color layer 14 to form the information layer 15 on the surface of the color layer 14. The embossing machine is an existing device. The seam spacing of the embossing roller plate of the embossing machine is less than 0.2 mm, the transverse shrinkage of embossing is 3 mm - 7 mm, the embossing temperature is 170 °C - 185 °C, the embossing pressure is 30 N - 40 N, the unwind tension: 8.0 N - 9.0 N, the rewind tension: 5.0 N - 6.0 N;

[0043] S5. Corona: Perform corona treatment on the surface of the information layer 15. Through corona treatment, the bonding force between the information layer 15 and the dielectric layer 16 can be improved;

[0044] S6. Zinc sulfide plating: Zinc sulfide is plated on the surface of the information layer 15 by a vacuum zinc sulfide plating machine to form the dielectric layer 16. The dielectric layer 16 is a zinc sulfide layer, and the vacuum zinc sulfide plating machine is existing equipment;

[0045] S7. Coating the adhesive layer 17: The dielectric layer 16 is coated by a coater to form the adhesive layer 17. The coater is existing equipment. The coating roller of the coater is a 300-mesh screen roller, and the wet coating amount is 3.2 g / ㎡ - 3.5 g / ㎡. After coating, it is dried by a multi-stage dryer 9. The temperature of each stage of the multi-stage dryer 9 is: 90 - 120 - 130 - 130 - 100 °C;

[0046] S8. Rewinding.

[0047] The positioning cold stamping film made by the above process is not only convenient for positioning during the production process, but also has a strong sense of hierarchy and good visual effect after production.

[0048] As Figure 3 shown, in step S1, a secondary coating device 2 is used to coat the release layer twice. The secondary coating device 2 includes a first coating mechanism 4, a second coating mechanism 5 and a coating tank 3. The PET film 1 is coated by the first coating mechanism 4 to form the first release layer 11, and the second release layer 12 is coated on the surface of the first release layer 11 by the second coating mechanism 5. Specifically, the running speed of the secondary coating device 2 is 80 m / min - 100 m / min, preferably 90 m / min. The first coating mechanism 4 includes a first coating roller 411, a first scraping roller 42 and a first scraper 43. The first coating roller 411 is located in the coating tank 3, and the coating of the release layer is provided in the coating tank 3. The first coating roller 411 is a 200-mesh ceramic roller. During the coating operation, the PET film 1 is conveyed to the first coating mechanism 4 by the first conveying roller 21. The first coating roller 41 rotates to transfer the coating in the coating tank 3 from the first coating roller 41 to the surface of the PET film 1. The coating on the surface of the PET film 1 is first scraped off a part by the first scraper 43, and then the excess coating is scraped off by the first scraping roller 42 to ensure that the wet coating amount is 5.75 g / ㎡ - 6.25 g / ㎡. And when the first scraping roller 42 rotates, the first scraper 43 can also clean the residual coating on the surface of the first scraping roller 42, which is beneficial to improving the accuracy of the first release layer 11.

[0049] The second coating mechanism 5 includes a second coating roller 51, a second scraping roller 52 and a second scraper 53. The second coating roller 51 is located in the coating tank 3. The second coating roller 51 is a 300-mesh ceramic roller. After the PET film 1 is coated by the first coating mechanism 4 to form the first release layer 11, it is then transferred to the second coating mechanism 5 by the second transfer roller 22 for secondary coating to form the second release layer 12. During the rotation of the second coating roller 51, the coating in the coating tank 3 is transferred to the surface of the first release layer 11, and then the excess coating is scraped off by the second scraping roller 52 to ensure that the wet coating amount during secondary coating is 3.25 g / ㎡ - 3.75 g / ㎡. When the second scraping roller 52 rotates, the coating on the surface of the second scraping roller 52 is cleaned by the second scraper 53.

[0050] The position of the second coating roller 51 is higher than that of the first coating roller 411. Figure 3 Where H is the depth of the coating. The immersion amount of the first coating roller 411 is greater than that of the second coating roller 51, which can help to achieve the corresponding wet coating amount. The coating tank 3 includes a partition net 31. The second coating roller 51 is located within the partition net 31. The partition net 31 is a mesh structure, and the coating can penetrate the partition net 31. During the transmission of the PET film 1, both the first coating roller 411 and the second coating roller 51 are working. Therefore, by setting the partition net 31, the influence between the two coating rollers can be reduced.

[0051] By forming the first release layer 11 and the second release layer 12 through secondary coating, while increasing the thickness of the release layer (the first release layer 11 and the second release layer 12), it is ensured that when the shaping roller 6 shapes the release layer, it will not penetrate the release layer due to the overly deep recess 13, resulting in difficult peeling of the PET film 1, nor will it cause difficult drying of the coating due to the overly thick release layer, and the recess 13 will not be covered due to the flow of the coating after shaping.

[0052] As Figures 3 to 5 shown, the PET film 1 is pre-dried by a pre-dryer 8 after passing through the first coating mechanism 4 and after passing through the second coating mechanism 5. The pre-dryer 8 includes a first drying channel 81, a second drying channel 82 and a third drying channel 83. The PET film 1 sequentially passes through the first coating mechanism 4, the first drying channel 81, the second drying channel 82, the second coating mechanism 5 and the third drying channel 83. The first drying channel 81 and the second drying channel 82 are used to dry the first release layer 11, and the third drying channel 83 is used to pre-dry the second release layer 12. The first release layer 11 is dried before the second release layer 12 is coated, and pre-drying is immediately carried out after the second release layer 12 is coated, reducing the fluidity of the coating, so that after the shaping roller 6 shapes, the coating of the second release layer 12 will not flow to the recess 13, thus ensuring the shaping effect.

[0053] As Figure 5As shown, the pre-dryer 8 further includes a housing 84. A fourth conveyor roller 24 is installed inside the housing 84. After the PET film 1 is dried in the first drying channel 81 for the first release layer 11, it enters the housing 84, then passes through the fourth conveyor roller 24 for turning and enters the second drying channel 82. First heating tubes 85 are arranged on both sides of the first drying channel 81, second heating tubes 86 are arranged on both sides of the second drying channel 82, and third heating tubes 87 are arranged on both sides of the third drying channel 83. The first heating tubes 85, the second heating tubes 86, and the third heating tubes 87 are all provided with independent liquid inlet tubes 88. The outlet ends of the first heating tubes 85, the second heating tubes 86, and the third heating tubes 87 are commonly connected to a liquid outlet tube 89. High-temperature liquid passes through the first heating tubes 85, the second heating tubes 86, and the third heating tubes 87. By providing the first heating tubes 85, the second heating tubes 86, and the third heating tubes 87, independent temperature adjustment of the first drying channel 81, the second drying channel 82, and the third drying channel 83 can be achieved, facilitating the drying operation.

[0054] As Figure 3 , Figures 6 to 8 As shown, the shaping roller 6 includes a plurality of ribs 61. A groove 62 is provided between two adjacent ribs 61. After the PET film 1 is double-coated, it is conveyed to the shaping roller 6 through the third conveyor roller 23. The shaping roller 6 is rotated, and the ribs 61 come into contact with the second release layer 12, and the coating in contact with the ribs 61 on the second release layer 12 is scraped off by the ribs 61, so as to form a recessed portion 13 on the surface of the second release layer 12;

[0055] After the shaping roller 6 scrapes off the excess coating, the surface of the shaping roller 6 will also adhere to the coating. Therefore, it is necessary to clean the surface of the shaping roller 6 through the cleaning roller 7. The cleaning roller 7 is provided on the side of the shaping roller 6. The cleaning roller 7 includes a threaded shaft 71 and guide rods 74 located on both sides of the threaded shaft 71. Both ends of the threaded shaft 71 and the guide rods 74 are connected to a bracket 76. One end of the threaded shaft 71 is connected to a gear 75. An external driver is connected to the gear 75 and can drive the gear 75 to rotate. The threaded shaft 71 is driven to rotate through the gear 75. A sliding sleeve 72 is sleeved outside the threaded shaft 71. The sliding sleeve 72 is threadedly connected to the threaded shaft 71. A cleaning sleeve 73 is sleeved outside the sliding sleeve 72. The cleaning sleeve 73 is connected to the outside of the sliding sleeve 72 through a bearing. The cleaning sleeve 73 is connected to the sliding sleeve 72 through a bearing. The side of the sliding sleeve 72 abuts against the side of the shaping roller 6. When the shaping roller 6 rotates, it will drive the cleaning sleeve 73 to rotate. The surface of the shaping roller 6 is cleaned through the cleaning sleeve 73. And during the rotation of the cleaning sleeve 73, the threaded shaft 71 will also rotate, driving the sliding sleeve 72 to reciprocate back and forth along the guide rods 74 through the threaded shaft 71, so as to realize the reciprocating movement of the cleaning sleeve 73 along the guide rods 74, thereby improving the cleaning effect on the surface of the shaping roller 6.

[0056] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A process for producing a positioning cold foil film, characterized in that: The following steps are involved: S1. Coating a release layer on the surface of the PET film (1): using a secondary coating device (2) to coat the release layer twice, the secondary coating device (2) comprising a first coating mechanism (4) and a second coating mechanism (5), the PET film (1) is coated by the first coating mechanism (4) to form a first release layer (11), and the second coating mechanism (5) is coated on the surface of the first release layer (11) to form a second release layer (12); S2, shaping: the second release layer (12) is shaped by a shaping roller (6) so that a recessed portion (13) is formed in the second release layer (12); S3, coating the surface of the second release layer (12) with a color layer (14): coating the surface of the second release layer (12) with a coating machine to form a color layer (14), wherein the color layer (14) is embedded in the recessed portion (13), and the color layer (14) facing the recessed portion (13) has a darker color; S4, molding: the molding machine performs positioning molding on the surface of the color layer (14) according to the color depth of the surface of the color layer (14), so as to form an information layer (15) on the surface of the color layer (14); S5, corona: applying corona on the surface of the information layer (15); S6, zinc sulfide plating: plating zinc sulfide on the surface of the information layer (15) to form a dielectric layer (16); S7, coating a back adhesive layer (17): coating the dielectric layer (16) with a coating machine to form a back adhesive layer (17); S8. Roll up.

2. The manufacturing process of a positioning cold foil film according to claim 1, characterized in that: In step S1, the first coating mechanism (4) includes a first coating roller (41), and the second coating mechanism (5) includes a second coating roller (51). The first coating roller (41) is a 200-mesh ceramic roller with a wet coating amount of 5.75 g / ㎡-6.25 g / ㎡, and the second coating roller (51) is a 300-mesh ceramic roller with a wet coating amount of 3.25 g / ㎡-3.75 g / ㎡. The speed of the secondary coating device (2) is 80 m / min-100 m / min.

3. The manufacturing process of a positioning cold foil film according to claim 1, characterized in that: After step S2 and after step S3, the PET film (1) needs to be dried by a multi-stage dryer (9). The multi-stage dryer (9) is a five-stage drying machine. The temperature of each stage of the multi-stage dryer (9) after step S2 is 70 / 110 / 155 / 165 / 155 / 110°C, and the temperature of each stage of the multi-stage dryer (9) after step S3 is 70 / 110 / 160 / 165 / 160 / 110°C.

4. The manufacturing process of a positioning cold foil film according to claim 1, characterized in that: In step S3, the coating roller of the coating machine is a 250-mesh ceramic roller, the wet coating amount is 5g / ㎡-5.5g / ㎡, and the dry coating amount is 1.35g / ㎡-1.45g / ㎡.

5. The manufacturing process of a positioning cold foil film according to claim 1, characterized in that: In step S4, the gap between the embossing rollers of the embossing machine is less than 0.2 mm, the lateral shrinkage of the embossing is 3 mm-7 mm, the embossing temperature is 170°C-185°C, the embossing pressure is 30N-40N, the unwinding tension is 8.0N-9.0N, and the winding tension is 5.0N-6.0N.

6. The manufacturing process of a positioning cold foil film according to claim 1, characterized in that: In step S7, the coating roller of the coating machine is a 300-mesh screen roller, the wet coating amount is 3.2 g / ㎡-3.5 g / ㎡, and after coating, it is dried in a multi-stage drying machine (9), and the temperature of each stage of the multi-stage drying machine (9) is: 90-120-130-130-100℃.

7. The manufacturing process of a positioning cold foil film according to claim 2, characterized in that: The PET film (1) is pre-dried in a pre-drying machine (8) after passing through a first coating mechanism (4) and a second coating mechanism (5). The pre-drying machine (8) comprises a first drying channel (81), a second drying channel (82) and a third drying channel (83). The PET film (1) passes through the first coating mechanism (4), the first drying channel (81), the second drying channel (82), the second coating mechanism (5) and the third drying channel (83) in sequence. The first drying channel (81) and the second drying channel (82) are used to dry the first release layer (11), and the third drying channel (83) is used to pre-dry the second release layer (12).

8. The manufacturing process of the positioning cold foil film according to claim 7, characterized in that: The secondary coating device (2) further comprises a coating trough (3), wherein the first coating roller (41) and the second coating roller (51) are both located in the coating trough (3), wherein the coating trough (3) comprises a partition net (31), wherein the second coating roller (51) is located in the partition net (31), and the position of the second coating roller (51) is higher than that of the first coating roller (41).

9. The manufacturing process of the positioning cold foil film according to claim 7, characterized in that: The shaping roller (6) comprises a plurality of convex ribs (61), and a groove (62) is provided between two adjacent convex ribs (61). When the shaping roller (6) is rotated, the convex ribs (61) contact the second release layer (12), so that a recessed portion (13) is formed on the surface of the second release layer (12); A cleaning roller (7) is provided on the side of the shaping roller (6), and the cleaning roller (7) comprises a threaded shaft (71), a sliding sleeve (72) is sleeved on the outer side of the threaded shaft (71), the sliding sleeve (72) is threadedly connected to the threaded shaft (71), a cleaning sleeve (73) is sleeved on the outer side of the sliding sleeve (72), the cleaning sleeve (73) is connected to the sliding sleeve (72) via a bearing, and the side of the sliding sleeve (72) abuts against the side of the shaping roller (6).

10. A positioning cold stamping film, made by the manufacturing process of a positioning cold stamping film according to claims 1 to 9, characterized in that: The invention comprises a PET film (1), wherein a first release layer (11) is provided on one side of the surface of the PET film (1), a second release layer (12) is provided on the surface of the first release layer (11), the second release layer (12) comprises a plurality of recessed portions (13), a color layer (14) is provided on the surface of the second release layer (12), an information layer (15) is provided on the surface of the color layer (14), a medium layer (16) is provided on the surface of the information layer (15), and a back adhesive layer (17) is provided on the surface of the medium layer (16).

Images