An anaglyphic texture silicone screen printing transfer printing trademark and a preparation method thereof

Abstract

The application discloses a kind of three-dimensional texture simulation silicone screen printing transfer trademark and preparation method thereof, and the trademark includes at least one layer of bottom glue layer, at least one layer of elastic substrate layer formed by transparent silicone liquid curing, at least one color layer and at least one surface effect layer.The preparation method includes: according to the design pattern, layered production of film;Bottom glue is used for multiple screen printing on release film and drying, and bottom glue layer is formed;Transparent silicone liquid is used for multiple screen printing and drying, and elastic substrate layer is formed;Silicone pigment is used for multiple screen printing and drying, and color layer is formed;Functional silicone material is used for screen printing and drying, and surface effect layer is formed.The application accurately reproduces complex texture such as embroidery and willow through multilayer screen printing process, and has the advantages of strong three-dimensional effect, low cost, washable, flexible design, etc.

Description

Technical Field

[0001] This invention relates to the field of garment accessories technology, specifically to a silicone screen printing and heat transfer trademark with simulated three-dimensional texture and its preparation method. Background Technology

[0002] A trademark is a distinctive mark used by producers or operators of goods on the goods they produce, manufacture, process, select, or distribute, or by providers of services on the services they provide, to distinguish the source of goods or services. It includes words, graphics, letters, numbers, three-dimensional signs, color combinations, and sounds, as well as combinations of the above elements, and is a product of the modern economy.

[0003] Traditional embroidered labels are costly and inefficient, making them difficult to popularize on a large scale. Existing silicone heat transfer labels are mostly simple flat or shallowly textured, with limited texture and depth, failing to meet the demands of high-end apparel for three-dimensional textures and delicate feel.

[0004] The heat transfer silicone trademark with publication number CN 106205358 A only uses a simple silicone layer structure, lacks a multi-layer fine texture structure, has weak texture expression, and the products are obviously homogeneous. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this application provides a simulated 3D textured silicone screen printing and heat transfer trademark, comprising: At least one bottom adhesion layer; At least one elastic base layer; At least one color layer; At least one surface effect layer.

[0006] Furthermore, the underlying adhesion layer is formed by multiple printing and curing of silicone adhesive, with a thickness of 0.05-0.1 mm.

[0007] Furthermore, the elastic base layer is formed by multiple printing and curing of transparent silicone liquid, with a thickness of 0.1-0.2 mm.

[0008] Furthermore, the color layer includes a white base layer and at least one silicone pigment layer, and the thickness of the color layer is 0.05-0.2 mm.

[0009] Furthermore, the surface effect layer is one or more combinations of a matte layer, a velvety layer, or a glossy layer.

[0010] Furthermore, the simulated three-dimensional texture is a simulated embroidery texture or a willow leaf texture.

[0011] As another aspect of this application, a method for preparing the aforementioned simulated three-dimensional textured silicone screen-printed heat transfer trademark is also provided, specifically including the following steps: S1, Create film plates in layers according to the design pattern; S2, Apply adhesive to the release film and perform multiple screen printings. After each printing, dry at low temperature to form the bottom adhesive layer. S3, use transparent silicone liquid to screen print multiple times on the bottom adhesive layer, and dry at low temperature after each printing to form an elastic base layer; S4, silicone pigments are screen printed multiple times on an elastic substrate, and the color layer is formed by low-temperature drying after each printing. S5 uses functional silicone material for screen printing on the color layer, and forms a surface effect layer after drying.

[0012] Furthermore, in step S2, the number of printing passes of the adhesive is 8 to 12, the printing pressure is 3 to 5 kg / cm², the drying temperature is 45 to 55°C, and the drying time is 15 to 25 minutes.

[0013] Furthermore, in step S3, the transparent silicone liquid is printed 5 to 10 times, with an interval of 10 to 20 seconds between each print, the printing pressure is 3 to 5 kg / cm², the drying temperature is 45 to 55°C, and the drying time is 25 to 35 minutes.

[0014] Furthermore, the silicone pigment is printed 3 to 6 times, the printing pressure is 4 to 5 kg / cm², the drying temperature is 45 to 55°C, and the drying time is 20 to 25 minutes; the functional silicone material is printed 1 to 4 times, the printing pressure is 2 to 3 kg / cm², the drying temperature is 45 to 55°C, and the drying time is 15 to 25 minutes.

[0015] The advantages of this application are as follows: the provided simulated three-dimensional textured silicone screen printing and heat transfer trademark and its preparation method break through the limitations of basic planar embossing and simple concave and convex patterns, possessing rich three-dimensional layers and delicate detail tension, presenting a high-end form with a textured touch and layered visual appeal, breaking away from the stereotype of "mediocre logos" and making the trademark itself an exquisite decorative element on clothing; it overcomes the cost problem caused by the reliance on high-quality silk thread, high-precision embroidery equipment, skilled technicians and complex pattern-making processes in traditional embroidered labels, while fully preserving the exquisite texture and three-dimensional style of embroidery, and significantly reducing production costs. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating the preparation process of the silicone screen printing and heat transfer trademark with simulated three-dimensional texture as described in this application. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0019] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0023] This embodiment provides a method for preparing a silicone screen-printed trademark with an embroidery-like texture, including the following steps: Step 1: Film Production and Verification First, receive the original silicone silkscreen logo design provided by the designer, featuring embroidery textures. Confirm that the design is in vector format (e.g., AI, CDR), ensuring complete lines and clear color layers. Convert the design to a standard CAD format compatible with the film printer using professional software (e.g., AutoCAD, CorelDRAW). During conversion, strictly verify the pattern proportions, size deviations (error ≤ 0.1mm), and color zoning information to avoid missing or misaligned layers. Using a high-precision laser film printer (resolution ≥ 2400dpi), import the CAD file and output it in layers according to the logo's color composition (e.g., transparent, white, 15-6315TPG color system mentioned in this article), with each color corresponding to an independent film plate.

[0024] The film surface is free of scratches, dirt, and bubbles; the pattern size is consistent with the design draft, and the color layer markings are clear; the registration marks are complete and accurate, and the alignment error of each film layer is ≤0.05mm.

[0025] Step 2: Printing the base layer with YYX209 adhesive (to enhance adhesion). Fix the verified base layer film onto the screen printing machine's worktable and adjust the screen distance to 2-3mm (too large a screen distance will result in incomplete printing, while too small a distance will cause the screen to stick). Select YYX209 dedicated screen printing adhesive and stir it thoroughly beforehand (stirring time ≥ 5 minutes to avoid sedimentation leading to uneven coating), then pour it into the screen printing machine's adhesive tank. Equip a flat squeegee (squeegee hardness 70-75 Shore hardness), adjust the squeegee angle to 75°, and set the printing pressure to 3-5kg / cm². Follow the standard operation of "uniform speed squeegee coating, return to reset," repeating the printing 10 times, with a 10-15 second interval between each printing, ensuring that the previous coating is semi-dry before the next printing to avoid layer separation. After every 3 printings, check the coating surface to ensure there are no missed prints, pinholes, or runs; after 10 printings, there should be no excess adhesive at the edges.

[0026] Step 3: Curing the base adhesive. Place the printed substrate (such as release paper) smoothly into the baking machine, ensuring the surface is free of overlap and wrinkles. Set the baking machine temperature to 50℃ and the baking time to 15-20 minutes using the "low temperature slow baking" mode to allow the adhesive to fully cross-link and cure, while avoiding excessive temperature that could cause material deformation. After curing, the adhesive layer surface is dry and not sticky to the touch; it will not peel off when lightly rubbed with a finger; after applying and peeling off with 3M tape, the coating will remain undamaged.

[0027] Step 4: Intermediate Layer YYX209 Adhesive Printing (Improving Coating Thickness and Smoothness). Replace the film plate with the corresponding intermediate layer pattern and repeat the YYX209 adhesive mixing and screen printing machine adjustment process from Step 2. This step is the intermediate transition layer, and its core function is to fill the gaps in the underlying layer and optimize the surface smoothness, laying the foundation for the subsequent silicone layer printing. Use a flat squeegee, adjust the printing pressure to 2-4 kg / cm² (slightly lower than the underlying layer to avoid damaging the cured coating), maintain a screen distance of 2-3 mm, and print twice consecutively, with a 10-second interval between the two passes. The coating surface should be smooth and free of bumps, tightly bonded to the underlying layer, and free of bubbles or breaks.

[0028] Step 5: Cure the intermediate layer adhesive, using the same parameters as in Step 3: baking temperature 50℃, time 15 minutes. Inspection criteria after curing: no shrinkage in the coating, and no marks left when lightly scratched with a fingernail.

[0029] Step 6: Printing with Transparent Silicone Liquid (Forming an Elastic Base) Replace the film plate and squeegee (specifically, the blade-tipped squeegee) with the dedicated transparent silicone liquid film. (The blade-tipped squeegee facilitates the filling of the mesh with silicone liquid, improving coating uniformity.) Before use, add a dedicated curing agent (10:1 ratio) to the transparent silicone liquid, stir thoroughly, and let stand for 5 minutes to remove air bubbles and prevent pinholes after printing. The squeegee hardness should be 65-70 Shore A hardness, the angle adjusted to 60°, the printing pressure 3-5 kg / cm², and the mesh distance 2 mm. Print 8 times consecutively, with a 15-second interval between each pass. Replenish the silicone liquid continuously during printing to prevent insufficient liquid in the glue tank, which could lead to a thin coating. The coating should be uniformly translucent, free of impurities and cloud-like patterns. 8 passes are required.

[0030] Step 7: Curing of the transparent silicone liquid. Baking temperature 50℃, time extended to 25-30 minutes (silicone liquid cures slowly, so ensure complete internal curing). Standard after curing: Good surface elasticity, quick rebound after pressing, no stickiness.

[0031] Step 8: White Pigment Printing (Color Base). Replace the film plate with a dedicated white pigment plate and use the same blade-shaped squeegee. The white pigment must be stirred beforehand until free of particles (if there is sediment, filter it) to ensure uniform color. Clean the screen printing plate before printing to prevent residual silicone from contaminating the pigment. Use a squeegee angle of 60°, printing pressure of 4-6 kg / cm² (to ensure adequate white pigment coverage, the pressure should be slightly higher than the silicone liquid), a screen distance of 2 mm, and print 5 consecutive passes with a 15-second interval between each pass. The coating should have a pure color without impurities, adequate coverage (opaque on the back), and no smudging at the edges.

[0032] Step 9: Curing of white pigment: Bake at 50℃ for 20-25 minutes. After curing, wipe the surface with a damp cloth; no pigment should come off.

[0033] Step 10: Printing with 15-6315TPG pigment (main color layer). Replace the film plate with a dedicated 15-6315TPG pigment and use a blade-type squeegee. This pigment is a special color pigment and must be mixed strictly according to the dilution ratio provided by the supplier (if required) to avoid printing problems due to excessive concentration or light color due to insufficient concentration. Use a squeegee angle of 60°, printing pressure of 3-5 kg / cm², screen distance of 2 mm, and print 4 consecutive passes with a 15-second interval between each pass. During printing, compare with the color chart to ensure that the color deviation is within the allowable range (ΔE≤1.5). The color should match the standard color chart, the coating should be uniform without drips or missed areas.

[0034] Step 11: Curing of 15-6315 TPG pigment, baking at 50℃ for 20 minutes, and initial color fastness test after curing (wiping vigorously with a dry cloth 5 times, no color fading).

[0035] Step 12: Matte DF-12 printing (matte effect layer). Replace with the matte DF-12 dedicated film plate and blade-tipped squeegee. Matte DF-12 is a functional coating material; it needs to be gently stirred before use (avoid vigorous stirring to prevent air bubbles) to ensure even distribution of the matte agent.

[0036] The squeegee angle is 55°, the printing pressure is 2-3 kg / cm² (a thin coating ensures a uniform matte finish), the screen distance is 1.5 mm, and the printing is done in one pass at a slightly slower speed (3-5 cm / s) to ensure complete coating coverage. The coating is free of missed prints and bubbles, and the surface has a uniform matte texture with no areas of uneven gloss.

[0037] Step 13: Curing of matte DF-12: Bake at 50℃ for 15 minutes. After curing, the surface has a delicate feel and is not sticky.

[0038] Step 14: Secondary transparent silicone liquid printing (enhancing elasticity and protection). Replace the film plate for transparent silicone liquid (same as in Step 6), using a blade-shaped squeegee. The silicone liquid mixing specifications are the same as in Step 6, ensuring accurate curing agent ratio. The core function of this step is to protect the inner layer color and improve the product's elasticity and water resistance. Squeegee angle 60°, printing pressure 3-4 kg / cm², screen distance 2 mm, continuous printing 5 passes, with a 15-second interval between each pass. The coating adheres tightly to the underlying layer, with no risk of peeling, and the light transmission is uniform and flawless.

[0039] Step 15: Secondary curing of transparent silicone liquid, baking at 50℃ for 30 minutes, after curing the elastic recovery rate is ≥95% (no permanent deformation after pressing).

[0040] Step 16: Printing with 15-6315TPG suede pigment (suede texture layer). Replace the film plate with the 15-6315TPG suede pigment-specific film and use a blade-tipped squeegee. The suede pigment needs to maintain a specific viscosity (8000-10000 cps at 25℃). If the viscosity is too high, add a special thinner (≤5%), stir well, and use immediately to avoid suede particle sedimentation. Squeegee angle 55°, printing pressure 4-5 kg / cm² (to ensure full adhesion of suede particles), screen distance 2 mm, print 4 consecutive passes with a 20-second interval between each pass (the suede coating needs to be slightly dry before layering to avoid particle flattening). The surface should have a uniform suede feel, with no particle agglomeration or exposed substrate, and the color should be consistent with Step 10.

[0041] Step 17: Cure 15-6315TPG suede pigment by baking at 50℃ for 25 minutes. After curing, the suede texture is stable, and there is no obvious shedding after 50 rubs.

[0042] Step 18: Secondary matte DF-12 printing (finished product protective layer). Replace with a matte DF-12 film plate (same as in Step 12), using a blade-tipped squeegee. This step is the final coating of the finished product, and a clean printing environment must be ensured to avoid contamination. Squeegee angle 55°, printing pressure 2-3 kg / cm², screen distance 1.5 mm, one pass. Immediately check the surface condition after printing, and reprint any defects (only for small areas of missed printing; large areas of defects require scrapping). After printing, final curing is required, with parameters of 50℃ baking for 20 minutes to ensure complete curing of the finished product. The surface matte effect is uniform, free of scratches, impurities, and bubbles, and the overall pattern is complete and meets design requirements. Example

[0043] This embodiment provides a method for preparing a silicone heat transfer label with a willow-like texture. The difference from Embodiment 1 is that the film used in step 1 is a design draft of the willow-like texture, and some printing layers and drying parameters have been adjusted to suit the requirements of the willow-like texture for delicate lines and a special gloss. The specific steps are as follows: Step 1: Film production and verification. A willow-like texture design is used, which simulates the movement of willow branches with smooth, delicate curves. The line width is 0.2–0.5 mm, and the line spacing is 0.5–1.0 mm. The film is output in layers using a high-precision laser film printer (resolution ≥2400 dpi), with registration mark alignment error ≤0.05 mm.

[0044] Step 2: Printing the base layer with YYX209 adhesive. Fix the base film onto the screen printing machine with a screen distance of 2mm. Mix the YYX209 screen printing adhesive thoroughly. Use a flat squeegee (70 Shore hardness) at a 75° angle and a printing pressure of 4kg / cm². Repeat printing 8 times, with a 12-second interval between each pass. Control the base adhesive layer thickness to 0.08mm.

[0045] Step 3: Curing of the base layer adhesive. Baking temperature 45℃, baking time 25 minutes, to ensure that the adhesive is fully cross-linked at a low temperature to avoid heat deformation of the edges of the willow tassels later.

[0046] Step 4: Print the middle layer of YYX209 glue, using the same printing parameters as in Step 2, and print 3 times to enhance the flatness support of the willow texture base.

[0047] Step 5: Curing of the intermediate layer adhesive, using the same parameters as in Step 3, is done at 45℃ for 20 minutes.

[0048] Step 6: Printing with transparent silicone liquid. Mix the transparent silicone liquid and curing agent at a ratio of 10:1, and allow to stand to release air. Use a blade-shaped squeegee (Shore hardness 65), with a squeegee angle of 60°, a printing pressure of 3 kg / cm², and a screen distance of 2 mm. Print continuously for 10 passes, with a 20-second interval between each pass, to achieve an elastic base layer thickness of 0.2 mm, providing a softer tactile base for the willow-leaf texture.

[0049] Step 7: Curing of transparent silicone liquid, baking temperature 55℃, time 35 minutes, to accelerate deep curing of silicone and ensure elasticity recovery rate ≥95%.

[0050] Step 8: White pigment printing. Stir the white pigment until there are no particles. Use a blade-shaped squeegee at a 60° angle, a printing pressure of 5 kg / cm², and a screen distance of 2 mm. Print 6 times, with a 15-second interval between each pass to increase the opacity of the white base layer and enhance the contrast of the willow pattern.

[0051] Step 9: Cure the white pigment and bake at 50℃ for 20 minutes.

[0052] Step 10: Print with 15-6315TPG pigment using a blade-tipped squeegee at a 60° angle, a printing pressure of 4 kg / cm², a screen distance of 2 mm, and 5 passes with a 15-second interval between each pass to ensure that the color saturation of the willow-like texture meets the design requirements.

[0053] Step 11: Cure 15-6315 TPG pigment and bake at 50℃ for 25 minutes.

[0054] Step 12: Matte DF-12 printing, squeegee angle 55°, printing pressure 2kg / cm², screen distance 1.5mm, print 2 times, the first time horizontally, the second time vertically, to make the matte texture of the willow-like surface more uniform and soft.

[0055] Step 13: Cure matte DF-12 by baking at 50℃ for 20 minutes.

[0056] Step 14: Secondary transparent silicone liquid printing. The silicone liquid is prepared in the same way as in step 6. A blade-shaped squeegee is used with a 60° angle. The printing pressure is 3 kg / cm². Four printing passes are made. The thickness of the protective layer is controlled to be moderate to avoid over-covering and affecting the delicate lines of the willow texture.

[0057] Step 15: Secondary curing of transparent silicone liquid, bake at 50℃ for 30 minutes.

[0058] Step 16: Printing with 15-6315TPG velvet pigment. The velvet pigment viscosity is 9000cps. Use a blade-tipped squeegee with a 55° angle, a printing pressure of 4kg / cm², and print 3 times with a 25-second interval between each pass. This allows the velvet particles to adhere slightly to the surface of the willow-lined lines, creating a subtle velvet texture and preventing particle accumulation from disrupting the smoothness of the lines.

[0059] Step 17: Cure 15-6315TPG velvet pigment and bake at 50℃ for 25 minutes.

[0060] Step 18: Secondary matte DF-12 printing, same parameters as in Step 12, one pass, bake at 50℃ for 20 minutes to complete preparation.

[0061] The willow-textured silicone heat transfer label prepared in this embodiment was tested and found to have the following characteristics: line width accuracy deviation ≤ 0.05mm, uniform surface velvet texture, and no obvious peeling or deformation of the pattern after a water washing test (40℃ water temperature, 50 washes), meeting the process requirements of high-end apparel for special textured labels.

[0062] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A silicone screen printing and heat transfer label with simulated three-dimensional texture, characterized in that, include: At least one bottom adhesion layer; At least one elastic base layer; At least one color layer; At least one surface effect layer.

2. The simulated three-dimensional textured silicone screen printing and heat transfer trademark according to claim 1, characterized in that: The underlying adhesion layer is formed by multiple printing and curing of silicone adhesive, with a thickness of 0.05-0.1mm.

3. The simulated three-dimensional textured silicone screen printing and heat transfer trademark according to claim 1, characterized in that: The elastic base layer is formed by multiple printing and curing of transparent silicone liquid, with a thickness of 0.1-0.2 mm.

4. The simulated three-dimensional textured silicone screen printing and heat transfer trademark according to claim 1, characterized in that: The color layer comprises a white base layer and at least one silicone pigment layer, and the thickness of the color layer is 0.05-0.2 mm.

5. The simulated three-dimensional textured silicone screen printing and heat transfer trademark according to claim 1, characterized in that: The surface effect layer is one or more of a combination of a matte layer, a velvety layer, or a glossy layer.

6. The simulated three-dimensional textured silicone screen printing and heat transfer trademark according to claim 1, characterized in that: The simulated three-dimensional texture is an imitation embroidery texture or a willow leaf texture.

7. A method for preparing a simulated three-dimensional textured silicone screen printing and heat transfer trademark according to any one of claims 1-6, characterized in that, Includes the following steps: S1, Create film plates in layers according to the design pattern; S2, Apply adhesive to the release film and perform multiple screen printings. After each printing, dry at low temperature to form the bottom adhesive layer. S3, use transparent silicone liquid to screen print multiple times on the bottom adhesive layer, and dry at low temperature after each printing to form an elastic base layer; S4, silicone pigments are screen printed multiple times on an elastic substrate, and the color layer is formed by low-temperature drying after each printing. S5 uses functional silicone material for screen printing on the color layer, and forms a surface effect layer after drying.

8. The method for preparing a simulated three-dimensional textured silicone screen printing and heat transfer trademark according to claim 7, characterized in that: In step S2, the number of printing passes of the adhesive is 8 to 12, the printing pressure is 3 to 5 kg / cm², the drying temperature is 45 to 55°C, and the drying time is 15 to 25 minutes.

9. The method for preparing a simulated three-dimensional textured silicone screen printing and heat transfer trademark according to claim 7, characterized in that: In step S3, the transparent silicone liquid is printed 5 to 10 times, with an interval of 10 to 20 seconds between each print. The printing pressure is 3 to 5 kg / cm², the drying temperature is 45 to 55°C, and the drying time is 25 to 35 minutes.

10. The method for preparing a simulated three-dimensional textured silicone screen printing and heat transfer trademark according to claim 7, characterized in that: The silicone pigment is printed 3 to 6 times, with a printing pressure of 4 to 5 kg / cm², a drying temperature of 45 to 55°C, and a drying time of 20 to 25 minutes; the functional silicone material is printed 1 to 4 times, with a printing pressure of 2 to 3 kg / cm², a drying temperature of 45 to 55°C, and a drying time of 15 to 25 minutes.

Images