Pressing and flat pasting composite process of skin-touch surface polymer coated paper

Abstract

The invention relates to the technical field of functional paper production, in particular to a pressing and flat pasting composite process of skin-touch surface polymer coated paper, which comprises the following steps: pretreating a base material through low-temperature plasma to form a nano groove; the preparation method comprises the following steps: preparing a bottom coating solution containing sulfydryl modified polyurethane and other components, a middle coating layer containing a carbon nanotube forest and a surface coating solution containing a fluorosilicone block copolymer, and sequentially coating, drying and curing; the coated paper and the base material treated by the silicon dioxide transition layer are compounded after being subjected to vacuum hot pressing and steam treatment, and then are subjected to ultraviolet ozone treatment, so that the comprehensive performance is improved. According to the process, by innovating a coating formula and a compounding technology, the wear resistance, pollution resistance and touch performance of the coated paper are remarkably improved, and the functions of antibiosis, temperature sensing adjustment and the like are achieved; the gloss is adjustable, the adhesive force is high, the VOCs emission is low, the environmental protection property is good, and the multi-element requirements of the high-end market are met.

Description

Technical Field

[0001] The invention relates to the technical field of functional paper production, in particular to a pressing and laminating process for skin-feeling surface polymer-coated paper. Background Art

[0002] In the fields of furniture, interior decoration and electronic product casings, skin-feeling polymer coated paper has become an important material for improving product texture due to its delicate and soft touch, elegant gloss and good wear resistance. The traditional coated paper composite process is mainly achieved by applying multiple layers of ordinary coatings and pressing them. It usually uses corona treatment of the substrate, roller coating of ordinary polyurethane or acrylic coating, and then hot pressing to composite. However, this type of process has obvious defects: the single coating structure leads to a stiff touch and poor wear resistance, and it is easy to be scratched and worn during use; the coating surface easily absorbs fingerprints and dust, making it difficult to clean and maintain; and there is a lack of integration of special functions such as antibacterial and temperature regulation, making it difficult to meet the diversified needs of the high-end market.

[0003] In recent years, some companies have attempted to improve skin feel by adding additives like matting agents and lubricants, or by using UV curing technology to increase production efficiency. However, these efforts have yet to address the fundamental issues. For example, while simply adding matting agents can reduce gloss, it can also affect the coating's density and abrasion resistance. Traditional UV coatings lack sufficient cross-linking, resulting in poor stain resistance and prone to delamination in humid environments. Furthermore, existing composite processes often rely on a single hot-pressing method, which cannot precisely control the adhesion between the coating and the substrate, leading to defects such as bubbles and hollowing, which impact product quality and stability.

[0004] As consumer demand for environmentally friendly, healthy, and intelligent products grows, the limitations of traditional coated paper lamination processes are becoming increasingly prominent. For example, conventional coatings contain volatile organic compounds (VOCs), which do not meet green production requirements. The lack of environmentally responsive materials prevents dynamic functional adjustment. Furthermore, existing processes struggle to precisely control the coating's microstructure, making it difficult to simultaneously meet multiple performance requirements, such as tactile feel, wear resistance, and functionality. Therefore, developing a polymer-coated paper lamination process that integrates multiple functions and enhances microstructural controllability has become a pressing industry challenge. Summary of the Invention

[0005] (1) Technical problems solved In view of the shortcomings of the prior art, the present invention provides a pressing and flat laminating process for skin-feeling surface polymer coated paper.

[0006] (2) Technical solution The pressing and laminating process of the skin-feel surface polymer coated paper includes the following steps: S1: Substrate pretreatment: The base paper is fed into a low-temperature plasma treatment device, where a mixture of helium and oxygen is introduced at a power of 12-18kW and a pressure of 50-80Pa to form a nano-scale groove structure on the surface. S2: Preparation and coating of primer. The primer consists of a thiol-modified polyurethane acrylate oligomer, nano-silica aerogel, γ-methacryloxypropyltrimethoxysilane, and photoinitiator 184 in a mass ratio of 5:3:2:1. 0.8-1.5% of dopamine-nanocellulose composite is added. The primer is coated by gravure printing and dried at 85-95°C for 6-9 minutes. The reaction occurs: Forming a dual network structure of siloxane crosslinking and thiol-ene click reaction; S3: Preparation of a mid-coat layer, which is composed of a water-based polyurethane dispersion, carbon nanotube forest, nano-scale mica powder, and phase change microcapsules in a mass ratio of 6:4:2:1, with 1-1.8% of dipropylene glycol butyl ether as a film-forming aid added. The coating is applied by reverse roll coating and dried at 130-150°C for 12-18 minutes. The core material of the phase change microcapsules is n-octadecane, with a particle size of 5-10 μm. S4: Preparation and application of a skin-feel topcoat consisting of a fluorinated acrylate-siloxane block copolymer, a hyperbranched polyetheramine-modified polyester resin, nano-sized titanium dioxide, and a silicone-modified polytetrafluoroethylene slip agent in a mass ratio of 7:3:2:1. 0.5-1.2% of a photochromic spiropyran dye was added. The topcoat was applied using a micro-concave roller and cured in three stages using a UV-LED curing device at an energy level of 1000-1500 mJ / cm². S5: Composite pressing: Place the coated paper and the substrate in a vacuum hot pressing laminating machine, press at a temperature of 85-105°C, a pressure of 6-9 MPa, and a vacuum degree of -0.08-0.06 MPa, with a holding time of 18-28 seconds. Then, introduce hot steam with a humidity of 85-95% for 3-5 minutes while maintaining the pressure.

[0007] Preferably, the method further comprises performing ultrasonic atomization pretreatment on the base paper before S1, spraying a nano-titanium dioxide dispersion having a mass fraction of 0.3-0.8% with an ultrasonic frequency of 40-60 kHz and a spraying amount of 3-5 g / m².

[0008] Preferably, the method further comprises performing a magnetic field induction treatment after coating in S3, applying an alternating magnetic field with an intensity of 0.8-1.2 T and a frequency of 15-25 Hz to align the carbon nanotube forest, and the treatment time is 5-8 minutes.

[0009] Preferably, the dopamine-nanocellulose composite in S2 is prepared by reacting 1-3 g / L dopamine with 0.5-1.5 g / L nanocellulose at pH 8-9 and 40-50° C. for 2-3 hours.

[0010] Preferably, the maximum absorption wavelength of the photochromic spiropyran dye in S4 in the topcoat liquid is 320-360 nm, and the color change response time after light exposure is ≤10 s.

[0011] Preferably, when the substrate in S5 is a density board, a silicon dioxide transition layer with a thickness of 80-120 nm needs to be formed on the surface in advance by chemical vapor deposition.

[0012] Preferably, the pore volume of the nano-silica aerogel in the S2 primer solution is 1.8-2.5 cm³ / g, and the specific surface area is 700-900 m² / g.

[0013] Preferably, the phase change latent heat of the phase change microcapsules in S3 is 180-220 J / g, which is used to adjust the surface temperature touch.

[0014] Preferably, the S4 fluorine-containing acrylate-siloxane block copolymer has a fluorine content of 10-15%, and the siloxane segment accounts for 25-35%.

[0015] Preferably, after the S5 composite pressing, ultraviolet ozone treatment is performed for 8-12 minutes at a wavelength of 185-254 nm and an ozone concentration of 10-20 mg / m³.

[0016] (3) Beneficial technical effects Compared with the existing technology, the beneficial effects of the present invention are: 1. A multi-layer composite coating is constructed using new materials such as nano-silica aerogel and carbon nanotube forests. Combined with plasma treatment and magnetic field induction technology, the coating forms a nano-scale groove structure and a directionally arranged reinforced network, improving the tactile score and increasing the wear resistance, effectively solving the problems of stiff touch and poor wear resistance caused by traditional processes.

[0017] 2. By adding dopamine-nanocellulose composites, nanosilver particles and phase change microcapsules, the coated paper is given self-repairing, antibacterial and temperature-sensing regulating functions; the application of fluorinated acrylate-siloxane block copolymers and photochromic dyes gives the coating excellent anti-fouling and environmental response properties, reaching the highest level of pollution resistance, significantly enhancing anti-fingerprint ability, and can achieve dynamic color changes under light.

[0018] 3. Low-temperature plasma pretreatment combined with vacuum autoclave steam treatment enhances substrate surface activity and interfacial bonding, achieving coating adhesion of Class 0. Staged UV-LED curing and precise temperature and pressure control ensure uniform crosslinking, preventing air bubbles and delamination. Practical application demonstrates that the gloss of coated paper produced using this process can be flexibly adjusted between 10-30 GU, meeting various requirements, from high gloss to matte. Furthermore, VOC emissions are reduced, meeting environmental standards, and demonstrating significant market competitiveness and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a process flow chart of the pressing and laminating process of the skin-feeling surface polymer coated paper proposed by the present invention; Figure 2 3. It is a broken line comparison chart of the number of abrasion resistance and glossiness of the embodiment and the comparative example; Figure 3 This is a columnar comparison chart of coating structure parameters in different embodiments; Figure 4 This is a radar comparison chart produced after unifying the dimensions of the performance parameters of the embodiment and the comparative example. DETAILED DESCRIPTION

[0020] according to Figures 1 to 4 , the specific implementation of the present invention is as follows: Example 1: High-gloss skin-feel coated paper composite process S1: Substrate pretreatment Decorative base paper with a basis weight of 180g / m² was fed into a low-temperature plasma treatment device. The helium flow rate was set at 20L / min, the oxygen flow rate at 6.7L / min, the power at 15kW, the pressure at 65Pa, and the treatment time at 5s. After treatment, surface tension testing with a surface tension meter revealed a surface tension of 52mN / m. Scanning electron microscopy revealed nanoscale grooves with an average depth of 40nm. S2: Primer preparation and coating The resulting mixture was prepared by weighing 50 parts by mass of a mercapto-modified polyurethane acrylate oligomer (double bond content 4.2 mmol / g); 30 parts of nanosilica aerogel (particle size 20 nm, specific surface area 800 m² / g); 20 parts of γ-methacryloxypropyltrimethoxysilane; and 10 parts of photoinitiator 184. The mixture was then added with 1.2 parts of a dopamine-nanocellulose composite (2 g / L dopamine and 1 g / L nanocellulose). The mixture was stirred at 3000 rpm for 40 minutes using a high-speed disperser, followed by ultrasonic degassing for 20 minutes. The coating was applied using a gravure printer with an anilox roller at 180 lines / inch, at a coating weight of 11 g / m². The mixture was then dried in a hot air circulating oven at 90°C for 7 minutes. S3: Preparation of midcoat Weigh 60 parts by mass of a waterborne polyurethane dispersion (40% solids content, 40,000 molecular weight); 40 parts of a carbon nanotube forest (6 μm height, 15 nm diameter); 20 parts of nano-scale mica powder (80:1 aspect ratio); 10 parts of a phase-change microcapsule containing an octadecane core material (8 μm particle size, 200 J / g phase change latent heat); and 1.5 parts of a film-forming aid, dipropylene glycol butyl ether. Grind the mixture using a three-roll mill to a fineness of ≤15 μm. Apply a reverse roll coater at a coating weight of 20 g / m² and dry in an infrared drying oven at 140°C for 15 minutes. Immediately after coating, apply an alternating magnetic field of 0.9 T at 20 Hz for 6 minutes. S4: Preparation and application of skin-feel topcoat Weigh 70 parts by mass of a fluorinated acrylate-siloxane block copolymer (12% fluorine content, 30% siloxane segments); 30 parts of a hyperbranched polyetheramine-modified polyester resin (0.7 degree of branching); 20 parts of nano-titanium dioxide (30 nm particle size); and 10 parts of a silicone-modified polytetrafluoroethylene lubricant. Add 0.8 parts of a photochromic spiropyran dye (maximum absorption wavelength 340 nm). Emulsify the mixture using a high-shear emulsifier at 5000 rpm for 30 minutes. Apply the mixture using a micro-gravure roller coating at a coating weight of 9 g / m². Curing is performed in three stages using a UV-LED curing system: the first stage at 450 mJ / cm², the second at 400 mJ / cm², and the third at 350 mJ / cm². S5: Composite pressing 18mm thick medium-density fiberboard (MDF) with a surface roughness of 1.0μm Ra was used. A 100nm thick silica transition layer was deposited on the substrate surface via chemical vapor deposition. The coated paper and substrate were placed in a vacuum hot press laminating machine set at 95°C, 7MPa, and a vacuum of -0.07MPa for 22 seconds. The lamination was then treated with hot steam at 90% humidity and 80°C for 4 minutes. After lamination, UV ozone treatment was performed at a wavelength of 254nm, an ozone concentration of 15mg / m³, and a treatment time of 10 minutes. Example 2: Matte Skin-Feel Coated Paper Lamination Process S1: Substrate pretreatment Decorative base paper with a basis weight of 200g / m² was fed into a low-temperature plasma treatment device. The helium flow rate was set at 22L / min, the oxygen flow rate at 7.3L / min, the power at 16kW, the pressure at 70Pa, and the treatment time at 4.5s. After treatment, surface tension testing using a surface tension meter revealed a surface tension of 53mN / m. Scanning electron microscopy revealed nanoscale grooves with an average depth of 35nm. S2: Primer preparation and coating The resulting mixture was prepared by weighing 55 parts by mass of a mercapto-modified polyurethane acrylate oligomer (double bond content 4.5 mmol / g); 25 parts of nanosilica aerogel (particle size 25 nm); 25 parts of γ-methacryloxypropyltrimethoxysilane; and 12 parts of photoinitiator 184. The mixture was then added with 1.5 parts of a dopamine-nanocellulose composite (2.5 g / L dopamine and 1.2 g / L nanocellulose). The mixture was stirred at 3000 rpm for 40 minutes using a high-speed disperser and ultrasonically degassed for 20 minutes. The coating was applied using a gravure printer with an anilox roller at 180 lines / inch, at a coating weight of 12 g / m². The mixture was then dried in a hot air circulating oven at 92°C for 8 minutes. S3: Preparation of midcoat Weigh 65 parts by mass of a waterborne polyurethane dispersion (42% solids, 45,000 molecular weight); 35 parts of a carbon nanotube forest (7 μm height, 15 nm diameter); 25 parts of nano-scale mica powder (80:1 aspect ratio); and 12 parts of a phase-change microcapsule containing an octadecane core material (9 μm particle size, 200 J / g latent heat of phase change). Add 1.7 parts of dipropylene glycol butyl ether (coating aid). Grind the mixture using a three-roll mill to a fineness of ≤15 μm. Apply a reverse roll coater at a coating weight of 21 g / m² and dry in an infrared drying oven at 145°C for 16 minutes. Immediately after coating, apply an alternating magnetic field of 1.0 T at 22 Hz for 7 minutes. S4: Preparation and application of skin-feel topcoat Weigh 75 parts by mass of a fluorinated acrylate-siloxane block copolymer (13% fluorine content, 32% siloxane segments); 25 parts of a hyperbranched polyester resin; 22 parts of nano-sized titanium dioxide (35 nm particle size); and 12 parts of a silicone-modified polytetrafluoroethylene lubricant. Add 1.0 part of a photochromic spiropyran dye with a maximum absorption wavelength of 340 nm. Emulsify the mixture using a high-shear emulsifier at 5000 rpm for 30 minutes. Apply a micro-gravure roller coating at a coating weight of 10 g / m². Curing is performed in three stages using a UV-LED curing system: the first stage at 500 mJ / cm², the second at 450 mJ / cm², and the third at 380 mJ / cm². S5: Composite pressing A 16mm thick high-density fiberboard (HDF) with a surface roughness of 1.0μm Ra was used. A 110nm thick silica transition layer was deposited on the substrate surface via chemical vapor deposition. The coated paper and substrate were placed in a vacuum hot press laminating machine set at 100°C, 8MPa, and a vacuum of -0.065MPa for 25 seconds. The lamination was then treated with hot steam at 92% humidity and 80°C for 5 minutes. After lamination, UV ozone treatment was performed at a wavelength of 185nm, an ozone concentration of 18mg / m³, and a treatment time of 11 minutes. Example 3: Antibacterial Skin-Feel Coated Paper Composite Process S1: Substrate pretreatment Decorative base paper with a basis weight of 180g / m² was pre-treated with ultrasonic atomization. A 0.5% nano-titanium dioxide dispersion with a particle size of 15nm was sprayed through an ultrasonic atomizer at a frequency of 50kHz, with a spray volume of 4g / m². After drying, the paper was then fed into a low-temperature plasma treatment device. The helium flow rate was set at 20L / min, the oxygen flow rate was 6.7L / min, the power was 15kW, the pressure was 65Pa, and the treatment time was 5s. After treatment, surface tension testing with a surface tension meter revealed a surface tension of 51mN / m. Scanning electron microscopy revealed the formation of nanoscale grooves with an average depth of 40nm. S2: Primer preparation and coating A mixture of 50 parts by mass of a mercapto-modified polyurethane acrylate oligomer (double bond content 4.2 mmol / g); 30 parts of nanosilica aerogel (particle size 20 nm, specific surface area 800 m² / g); 20 parts of γ-methacryloxypropyltrimethoxysilane; and 10 parts of photoinitiator 184 was added to a dopamine-nanocellulose composite (2 g / L dopamine and 1 g / L nanocellulose) and 1.0% of 20 nm nanosilver particles was added. The mixture was stirred at 3000 rpm for 40 minutes using a high-speed disperser and ultrasonically degassed for 20 minutes. The coating was applied using a gravure printer with an anilox roller at 180 lines / inch (lines / inch) at a coating weight of 10 g / m². The mixture was then dried in a hot air circulating oven at 88°C for 6.5 minutes. S3: Preparation of midcoat Weigh 60 parts by mass of a waterborne polyurethane dispersion (40% solids content, 40,000 molecular weight); 40 parts of a carbon nanotube forest (6 μm height, 15 nm diameter); 20 parts of nano-mica powder (80:1 aspect ratio); 10 parts of a phase-change microcapsule containing an octadecane core material (8 μm particle size, 200 J / g latent heat of phase change); and 1.5 parts of a film-forming aid (dipropylene glycol butyl ether). Grind the mixture using a three-roll mill to a fineness of ≤15 μm. Apply a reverse roll coater at a coating weight of 20 g / m² and dry in an infrared drying oven at 140°C for 15 minutes. Magnetic field treatment is omitted in this step.

[0021] S4: Preparation and application of skin-feel topcoat Weigh 80 parts by mass of a fluorinated acrylate-siloxane block copolymer (14% fluorine content, 30% siloxane segments); 20 parts of a hyperbranched polyester resin; 25 parts of nano-sized titanium dioxide (38 nm particle size); and 15 parts of a silicone-modified polytetrafluoroethylene lubricant. Add 0.6 parts of a photochromic spiropyran dye with a maximum absorption wavelength of 340 nm. Emulsify the mixture using a high-shear emulsifier at 5000 rpm for 30 minutes. Apply the mixture using a micro-gravure roller coating at a coating weight of 8 g / m². Curing is performed in three stages using a UV-LED curing system: 400 mJ / cm² in the first stage, 400 mJ / cm² in the second stage, and 400 mJ / cm² in the third stage, for a total curing energy of 1200 mJ / cm². S5: Composite pressing 12mm thick plywood with a surface roughness of 1.0μm Ra was used. A 90nm thick silica transition layer was deposited on the substrate surface using chemical vapor deposition. The coated paper and substrate were placed in a vacuum hot press laminating machine set at 88°C, 6.5MPa, and a vacuum of -0.075MPa for 20 seconds. Hot steam at 88% humidity and 80°C was then introduced for 3.5 minutes. After lamination, UV ozone treatment was performed at a wavelength of 254nm, an ozone concentration of 12mg / m³, and a treatment time of 9 minutes.

[0022] Comparative example: Traditional skin-feel paper composite process S1: Substrate treatment A decorative base paper with a basis weight of 180g / m² was used, and only corona treatment was performed at a power setting of 8kW. After treatment, surface tension testing using a surface tension tester revealed a surface tension of 38mN / m. S2: Primer Weigh 100 parts by weight of a standard polyurethane primer and stir it uniformly in a high-speed disperser at 1500 rpm for 20 minutes. Apply the primer using a gravure printer with an anilox roller and 120 lines per inch, applying a coating of 15g / m². Dry in a hot air circulation oven at 100°C for 10 minutes. S3: midcoat Weigh 80 parts water-based acrylic paint and 20 parts ordinary matting powder by weight, stirring at 1800 rpm for 25 minutes in a high-speed disperser until uniform. Use a reverse roll coater to coat 25g / m², and dry in an infrared drying oven at 130°C for 20 minutes. S4: Topcoat Weigh 100 parts by weight of a standard UV skin-feel coating and emulsify it in a high-shear emulsifier at 3000 rpm for 15 minutes. Apply 12 g / m² of coating using a micro-gravure roller. Curing is performed using a UV curing machine with a single application of 800 mJ / cm² of UV energy. S5: Composite 18mm thick medium-density fiberboard (MDF) with a surface roughness of Ra 1.0μm was selected. The coated paper and substrate were placed in a hot press laminating machine set at a temperature of 120°C and a pressure of 3MPa for 15 seconds. No steam treatment or UV ozone treatment was performed.

[0023] The performance comparison of the embodiment and the comparative example is shown in the following table: Table 1 Test items Example 1 Example 2 Example 3 Comparative Example Resistant Abrasion Times (RCA) 215 190 205 120 Pollution resistance level 5 5 5 3 Touch rating 9.2 9.5 9.0 7.5 Yellowing resistance grade 4 4 4 2 Antibacterial rate (Escherichia coli) - - 99.8% - Glossiness (60°) 25 12 28 40 The comparison of coating structure parameters of different embodiments is shown in the following table: Table 2 Example Example 1 Example 2 Example 3 Primer thickness (μm) 8 9 7 Midcoat thickness (μm) 15 16 14 Topcoat thickness (μm) 7 8 6 Total thickness (μm) 30 33 27 While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. The pressing and laminating process of the skin-feeling surface polymer coated paper is characterized in that: The following steps are involved: S1: Substrate pretreatment: The base paper is fed into a low-temperature plasma treatment device, where a mixture of helium and oxygen is introduced at a power of 12-18kW and a pressure of 50-80Pa to form a nano-scale groove structure on the surface. S2: Preparation and coating of primer. The primer consists of a thiol-modified polyurethane acrylate oligomer, nano-silica aerogel, γ-methacryloxypropyltrimethoxysilane, and photoinitiator 184 in a mass ratio of 5:3:2:

1. 0.8-1.5% of dopamine-nanocellulose composite is added. The primer is coated by gravure printing and dried at 85-95°C for 6-9 minutes. The reaction occurs: Forming a dual network structure of siloxane crosslinking and thiol-ene click reaction; S3: Preparation of a mid-coat layer, which is composed of a water-based polyurethane dispersion, carbon nanotube forest, nano-scale mica powder, and phase change microcapsules in a mass ratio of 6:4:2:1, with 1-1.8% of dipropylene glycol butyl ether as a film-forming aid added. The coating is applied by reverse roll coating and dried at 130-150°C for 12-18 minutes. The core material of the phase change microcapsules is n-octadecane, with a particle size of 5-10 μm. S4: Preparation and application of a skin-feel topcoat consisting of a fluorinated acrylate-siloxane block copolymer, a hyperbranched polyetheramine-modified polyester resin, nano-sized titanium dioxide, and a silicone-modified polytetrafluoroethylene slip agent in a mass ratio of 7:3:2:

1. 0.5-1.2% of a photochromic spiropyran dye was added. The topcoat was applied using a micro-concave roller and cured in three stages using a UV-LED curing device at an energy level of 1000-1500 mJ / cm². S5: Composite pressing: Place the coated paper and the substrate in a vacuum hot pressing laminating machine, press at a temperature of 85-105°C, a pressure of 6-9 MPa, and a vacuum degree of -0.08-0.06 MPa, with a holding time of 18-28 seconds. Then, introduce hot steam with a humidity of 85-95% for 3-5 minutes while maintaining the pressure.

2. The pressing and flat laminating process for the skin-feeling surface polymer coated paper according to claim 1, characterized in that: The method also includes ultrasonic atomization pretreatment of the base paper before S1, atomizing and spraying a nano-titanium dioxide dispersion with a mass fraction of 0.3-0.8%, an ultrasonic frequency of 40-60kHz, and a spraying amount of 3-5g / m².

3. The pressing and flat laminating process for the skin-feeling surface polymer coated paper according to claim 1, characterized in that: The method also includes performing a magnetic field induction treatment after coating in S3, applying an alternating magnetic field with an intensity of 0.8-1.2T and a frequency of 15-25Hz to orient the carbon nanotube forest, and the treatment time is 5-8 minutes.

4. The pressing and flat laminating process for the skin-feeling surface polymer coated paper according to claim 1, characterized in that: The dopamine-nanocellulose composite in S2 is prepared by reacting 1-3 g / L dopamine with 0.5-1.5 g / L nanocellulose at pH 8-9 and temperature 40-50° C. for 2-3 hours.

5. The pressing and laminating process for the skin-feeling surface polymer coated paper according to claim 1, characterized in that: The maximum absorption wavelength of the photochromic spiropyran dye in S4 in the topcoat liquid is 320-360 nm, and the color change response time after light exposure is ≤10 s.

6. The pressing and laminating process for the skin-feeling polymer coated paper according to claim 1, characterized in that: When the substrate in S5 is a density board, a silicon dioxide transition layer with a thickness of 80-120 nm needs to be formed on the surface in advance by chemical vapor deposition.

7. The pressing and laminating process for the skin-feeling polymer coated paper according to claim 1, characterized in that: The pore volume of the nano-silica aerogel in the S2 primer solution is 1.8-2.5 cm³ / g, and the specific surface area is 700-900 m² / g.

8. The pressing and flat laminating process for skin-feeling polymer coated paper according to claim 1, characterized in that: The phase change latent heat of the phase change microcapsules in S3 is 180-220 J / g, which is used to adjust the surface temperature touch.

9. The pressing and laminating process for the skin-feeling polymer coated paper according to claim 1, characterized in that: The S4 fluorinated acrylate-siloxane block copolymer has a fluorine content of 10-15%, and the siloxane segment accounts for 25-35%.

10. The pressing and laminating process for the skin-feeling polymer coated paper according to claim 1, characterized in that: After the S5 composite pressing, ultraviolet ozone treatment is performed at a wavelength of 185-254nm and an ozone concentration of 10-20mg / m³ for 8-12 minutes.

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