Lamination and flat lamination process of skin-feel surface polymer coated paper

Abstract

This invention relates to the field of functional paper production technology, specifically a lamination and flat-lay composite process for skin-feel surface polymer coated paper. The process involves pre-treating the substrate with low-temperature plasma to form nanogrooves; preparing a base coating containing mercapto-modified polyurethane, a middle coating containing carbon nanotube forests, and a top coating containing fluorinated silicone block copolymers, which are then sequentially coated and dried and cured; the coated paper is then laminated with a substrate treated with a silica transition layer under vacuum hot pressing and steam treatment, followed by ultraviolet ozone treatment to improve overall performance. This process, through innovative coating formulation and composite technology, significantly improves the abrasion resistance, stain resistance, and tactile properties of coated paper, endowing it with antibacterial and temperature-regulating functions; adjustable gloss, strong adhesion, low VOC emissions, and excellent environmental performance, meeting the diverse needs of the high-end market.

Description

Technical Field

[0001] This invention relates to the field of functional paper production technology, specifically to the lamination and flat lamination process of skin-feel surface polymer coated paper. Background Technology

[0002] In furniture, interior decoration, and electronic product casings, skin-feel coated polymer paper, with its delicate and soft touch, elegant gloss, and good abrasion resistance, has become an important material for enhancing product quality. Traditional coated paper lamination processes mainly involve applying multiple layers of ordinary coatings and then laminating them. This typically involves corona-treated substrates, roller-coating with ordinary polyurethane or acrylic coatings, and then hot-pressing the lamination. However, this process has significant drawbacks: the simple coating structure results in a stiff feel, poor abrasion resistance, and susceptibility to scratches and wear during use; the coating surface easily attracts fingerprints and dust, making cleaning and maintenance difficult; and it lacks integration of special functions such as antibacterial and temperature-regulating properties, making it difficult to meet the diversified needs of the high-end market.

[0003] In recent years, some companies have attempted to improve the skin feel by adding additives such as matting agents and slip agents, or by using UV curing technology to improve production efficiency, but the fundamental problems remain unsolved. For example, while simply adding matting agents can reduce gloss, it affects the density and abrasion resistance of the coating; traditional UV coatings have insufficient cross-linking, resulting in poor stain resistance and a tendency to delamination in humid environments. Furthermore, existing composite processes often employ a single hot-pressing method, which cannot precisely control the adhesion between the coating and the substrate, easily leading to defects such as bubbles and hollow areas, affecting product quality stability.

[0004] With the increasing consumer demand for environmentally friendly, healthy, and intelligent products, the limitations of traditional coated paper composite processes are becoming increasingly apparent. For example, ordinary coatings contain volatile organic compounds (VOCs), which do not meet the requirements of green production; the lack of application of environmentally responsive materials makes it impossible to achieve dynamic functional adjustment. At the same time, existing processes struggle to achieve precise control over the microstructure of the coating, making it difficult to simultaneously meet multiple performance requirements such as tactile feel, abrasion resistance, and functionality. Therefore, developing a polymer-coated paper composite process that integrates multiple functions and improves the controllability of the microstructure has become an urgent problem for the industry. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a lamination and flat-lay composite process for skin-feel surface polymer coated paper.

[0007] (II) Technical Solution

[0008] The lamination and flat lamination process for skin-feel surface polymer coated paper includes the following steps:

[0009] S1: Substrate pretreatment: The base paper is sent into a low-temperature plasma treatment equipment, and a mixture of helium and oxygen is introduced. It is treated under the conditions of 12-18kW power and 50-80Pa pressure to form a nanoscale groove structure on the surface.

[0010] S2: Preparation and application of the primer. The primer consists of a mercapto-modified polyurethane acrylate oligomer, nano-silica aerogel, γ-methacryloyloxypropyltrimethoxysilane, and photoinitiator 184 in a mass ratio of 5:3:2:1, with 0.8-1.5% dopamine-nanocellulose composite added. It is applied by gravure printing and dried at 85-95℃ for 6-9 minutes, during which the reaction occurs.

[0011]

[0012]

[0013]

[0014] A dual network structure of siloxane crosslinking and mercapto-alkene click reaction is formed;

[0015] S3: Preparation of the intermediate coating, which consists of an aqueous polyurethane dispersion, carbon nanotube forest, nano-sized mica powder, and phase change microcapsules in a mass ratio of 6:4:2:1, with 1-1.8% of film-forming aid dipropylene glycol butyl ether added. The coating is applied using a reverse roller coating method and dried at 130-150℃ for 12-18 min. The core material of the phase change microcapsules is n-octadecane with a particle size of 5-10 μm.

[0016] S4: Preparation and application of the skin-feeling topcoat. The topcoat consists of a fluorinated acrylate-siloxane block copolymer, hyperbranched polyetheramine-modified polyester resin, nano-sized titanium dioxide, and silicone-modified polytetrafluoroethylene slip agent in a mass ratio of 7:3:2:1, with the addition of 0.5-1.2% photochromic spiropyran dye. It is applied using a micro-grooved roller and cured in a UV-LED curing device at 1000-1500 mJ / cm². 2 Energy is solidified in three stages;

[0017] S5: Composite lamination, placing the coated paper and the substrate in a vacuum hot press laminator, laminating them at a temperature of 85-105℃, a pressure of 6-9MPa, and a vacuum degree of -0.08-0.06MPa, with a pressure holding time of 18-28s, followed by treatment with hot steam at 85-95% humidity for 3-5 minutes while maintaining the pressure.

[0018] Preferably, the process further includes ultrasonic atomization pretreatment of the base paper before S1, whereby a nano-titanium dioxide dispersion with a mass fraction of 0.3-0.8% is atomized and sprayed, with an ultrasonic frequency of 40-60kHz and a spraying amount of 3-5g / m². 2 .

[0019] Preferably, the process further includes applying a magnetic field-induced treatment after coating in S3, using an alternating magnetic field with an intensity of 0.8-1.2T and a frequency of 15-25Hz to orient the carbon nanotube forest, with a treatment time of 5-8 minutes.

[0020] Preferably, the dopamine-nanocellulose complex in S2 is prepared by reacting 1-3 g / L of dopamine with 0.5-1.5 g / L of nanocellulose at pH 8-9 and temperature 40-50°C for 2-3 hours.

[0021] Preferably, the maximum absorption wavelength of the photochromic spiropyran dye in the topcoat liquid in S4 is 320-360nm, and the color change response time after light irradiation is ≤10s.

[0022] Preferably, when the substrate in S5 is MDF, 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.

[0023] Preferably, the pore volume of the nano-silica aerogel in the S2 primer is 1.8-2.5 cm³. 3 / g, specific surface area 700-900m² 2 / g.

[0024] Preferably, the latent heat of phase change of the phase change microcapsules in S3 is 180-220 J / g, which is used to adjust the surface temperature and tactile sensation.

[0025] Preferably, the S4 fluorinated acrylate-siloxane block copolymer has a fluorine content of 10-15% and a siloxane segment ratio of 25-35%.

[0026] Preferably, after the S5 composite lamination is performed, ultraviolet ozone treatment is carried out at a wavelength of 185-254nm and an ozone concentration of 10-20mg / m³. 3 Process under the given conditions for 8-12 minutes.

[0027] (iii) Beneficial technical effects

[0028] Compared with existing technologies, the beneficial effects of this invention are:

[0029] 1. A multi-layer composite coating is constructed using novel materials such as nano-silica aerogel and carbon nanotube forest. Combined with plasma treatment and magnetic field induction technology, the coating forms a nanoscale groove structure and a directional reinforced network, which improves the tactile feel and increases the number of wear resistance cycles, effectively solving the problems of stiff tactile feel and poor wear resistance of traditional processes.

[0030] 2. By adding dopamine-cellulose nanocomposite, silver nanoparticles and phase change microcapsules, the coated paper is endowed with self-healing, antibacterial and temperature-regulating functions; the application of fluorinated acrylate-siloxane block copolymer and photochromic dye gives the coating excellent stain resistance and environmental response characteristics, the highest level of stain resistance, significantly enhanced anti-fingerprint ability, and dynamic color change under light.

[0031] 3. The combination of low-temperature plasma pretreatment and vacuum hot-press steam treatment enhances the surface activity and interfacial adhesion of the substrate, achieving a coating adhesion level of 0. Staged UV-LED curing and precise temperature and pressure control ensure uniform cross-linking of the coating, avoiding bubbles and delamination defects. Practical application verification shows that the gloss of coated paper produced by this process can be flexibly adjusted between 10-30 GU to meet various needs such as high gloss and matte finishes. Furthermore, VOC emissions are reduced, meeting green environmental protection standards and demonstrating significant market competitiveness and application value. Attached Figure Description

[0032] Figure 1 This is a flow chart of the lamination and flat lamination process of the skin-feel surface polymer coated paper proposed in this invention;

[0033] Figure 2 This is a line graph comparing the wear resistance and gloss of the examples and comparative examples;

[0034] Figure 3 This is a bar chart comparing the coating structure parameters of different embodiments;

[0035] Figure 4 This is a radar comparison chart created by standardizing the performance parameters of the embodiments and comparative examples. Detailed Implementation

[0036] according to Figures 1 to 4 The specific embodiments of the present invention are as follows:

[0037] Example 1: High-gloss skin-feel coated paper composite process

[0038] S1: Substrate Pretreatment

[0039] Select a quantitative dose of 180g / m 2 The decorative base paper was fed into a low-temperature plasma treatment device. The settings included a helium flow rate of 20 L / min, an oxygen flow rate of 6.7 L / min, a power of 15 kW, a pressure of 65 Pa, and a treatment time of 5 s. After treatment, the surface tension was measured using a surface tension tester, reaching 52 mN / m. Scanning electron microscopy revealed the formation of nanoscale grooves with an average depth of 40 nm on the surface.

[0040] S2: Preparation and application of primer

[0041] Weigh out 50 parts by mass of mercapto-modified polyurethane acrylate oligomer with a double bond content of 4.2 mmol / g; and 30 parts by mass of nano-silica aerogel with a particle size of 20 nm and a specific surface area of ​​800 m². 2 The mixture consisted of 20 parts γ-methacryloyloxypropyltrimethoxysilane and 10 parts photoinitiator 184, with 1.2 parts dopamine-nanocellulose complex added (dopamine 2 g / L, nanocellulose 1 g / L). The mixture was stirred at 3000 rpm for 40 min using a high-speed disperser and then ultrasonically degassed for 20 min. Coating was performed using a gravure printing press with an anilox roller of 180 lines / inch, with a coating weight of 11 g / m². 2 Dry in a 90℃ hot air circulating oven for 7 minutes.

[0042] S3: Preparation of intermediate coating

[0043] Weigh out 60 parts by mass of an aqueous polyurethane dispersion with a solid content of 40% and a molecular weight of 40,000; 40 parts of a carbon nanotube forest with a height of 6 μm and a diameter of 15 nm; 20 parts of nano-sized mica powder with an aspect ratio of 80:1; 10 parts of phase change microcapsules with an octadecane core material, a particle size of 8 μm, and a latent heat of phase change of 200 J / g; and add 1.5 parts of a film-forming aid, dipropylene glycol butyl ether. Grind the mixture using a three-roll mill to a fineness ≤15 μm. Apply the coating using a reverse roller coating machine with a coating amount of 20 g / m². 2 Dry in an infrared drying oven at 140℃ for 15 minutes. Immediately after coating, apply an alternating magnetic field of 0.9T and 20Hz for 6 minutes.

[0044] S4: Preparation and application of skin-feeling surface coating

[0045] Weigh out 70 parts by mass of a fluorinated acrylate-siloxane block copolymer (fluorine content 12%, siloxane segments 30%), 30 parts of hyperbranched polyetheramine-modified polyester resin (branching degree 0.7), 20 parts of nano-sized titanium dioxide (particle size 30nm), and 10 parts of silicone-modified polytetrafluoroethylene slip agent, and add 0.8 parts of photochromic spiropyran dye (maximum absorption wavelength 340nm). Emulsify at 5000rpm for 30min using a high-shear emulsifier. Coat with a micro-grooved roller at a coating weight of 9g / m². 2 In the UV-LED curing equipment, curing is performed in three stages: the first stage is 450mJ / cm². 2 The second segment is 400mJ / cm 2 The third segment is 350 mJ / cm 2 .

[0046] S5: Composite lamination

[0047] Medium-density fiberboard (MDF) with a thickness of 18 mm and a surface roughness Ra of 1.0 μm was selected. A 100 nm thick silica transition layer was formed on the substrate surface using chemical vapor deposition. The coated paper and substrate were placed in a vacuum hot press laminator, with the temperature set at 95℃, pressure at 7 MPa, and vacuum at -0.07 MPa, and the pressure held for 22 seconds. Subsequently, hot steam with 90% humidity and a temperature of 80℃ was introduced for 4 minutes. After lamination, ultraviolet ozone treatment was performed at a wavelength of 254 nm and an ozone concentration of 15 mg / m³. 3 Processing time: 10 minutes.

[0048] Example 2: Matte Skin-Feel Coated Paper Composite Process

[0049] S1: Substrate Pretreatment

[0050] Select a quantitative amount of 200g / m 2 The decorative base paper was fed into a low-temperature plasma treatment device. The settings included a helium flow rate of 22 L / min, an oxygen flow rate of 7.3 L / min, a power of 16 kW, a pressure of 70 Pa, and a treatment time of 4.5 s. After treatment, the surface tension was measured using a surface tension tester, reaching 53 mN / m. Scanning electron microscopy revealed the formation of nanoscale grooves with an average depth of 35 nm on the surface.

[0051] S2: Preparation and application of primer

[0052] Weigh out 55 parts by mass of thiol-modified polyurethane acrylate oligomer (double bond content 4.5 mmol / g), 25 parts of nano-silica aerogel (particle size 25 nm), 25 parts of γ-methacryloyloxypropyltrimethoxysilane, and 12 parts of photoinitiator 184, and add 1.5 parts of dopamine-nanocellulose complex (dopamine 2.5 g / L, nanocellulose 1.2 g / L) to prepare the mixture. Stir at 3000 rpm for 40 min using a high-speed disperser and then ultrasonically degas for 20 min. Coat the mixture using a gravure printing press with an anilox roller of 180 lines / inch, with a coating weight of 12 g / m². 2 Dry in a 92℃ hot air circulating oven for 8 minutes.

[0053] S3: Preparation of intermediate coating

[0054] Weigh out 65 parts by mass of an aqueous polyurethane dispersion with a solid content of 42% and a molecular weight of 45,000; 35 parts of a carbon nanotube forest with a height of 7 μm and a diameter of 15 nm; 25 parts of nano-sized mica powder with an aspect ratio of 80:1; 12 parts of phase change microcapsules with an octadecane core material, a particle size of 9 μm, and a latent heat of phase change of 200 J / g; and add 1.7 parts of a film-forming aid, dipropylene glycol butyl ether. Grind the mixture using a three-roll mill to a fineness ≤15 μm. Apply the coating using a reverse roller coating machine with a coating amount of 21 g / m². 2Dry in an infrared drying oven at 145℃ for 16 minutes. Immediately after coating, apply an alternating magnetic field of 1.0T and 22Hz for 7 minutes.

[0055] S4: Preparation and application of skin-feeling surface coating

[0056] Weigh out 75 parts by mass of a fluorinated acrylate-siloxane block copolymer (fluorine content 13%, siloxane segments 32%), 25 parts of hyperbranched polyester resin, 22 parts of nano-sized titanium dioxide (particle size 35nm), 12 parts of silicone-modified polytetrafluoroethylene slip agent, and add 1.0 part of photochromic spiropyran dye (maximum absorption wavelength 340nm). Emulsify at 5000rpm for 30min using a high-shear emulsifier. Coat with a micro-grooved roller at a coating weight of 10g / m². 2 In the UV-LED curing equipment, curing is performed in three stages: the first stage is 500mJ / cm². 2 The second segment is 450 mJ / cm 2 The third segment is 380mJ / cm 2 .

[0057] S5: Composite lamination

[0058] High-density fiberboard (HDF) with a thickness of 16 mm and a surface roughness Ra of 1.0 μm was selected. A 110 nm thick silica transition layer was formed on the substrate surface using chemical vapor deposition. The coated paper and substrate were placed in a vacuum hot press laminator, with the temperature set at 100℃, pressure at 8 MPa, and vacuum at -0.065 MPa, and the pressure held for 25 seconds. Subsequently, hot steam with 92% humidity and a temperature of 80℃ was introduced for 5 minutes. After lamination, ultraviolet ozone treatment was performed at a wavelength of 185 nm and an ozone concentration of 18 mg / m³. 3 Processing time: 11 minutes.

[0059] Example 3: Antibacterial Skin-Feel Coated Paper Composite Process

[0060] S1: Substrate Pretreatment

[0061] Select a quantitative dose of 180g / m 2 The decorative base paper is first pretreated by ultrasonic atomization. A 0.5% nano-titanium dioxide dispersion, with a particle size of 15 nm, is then sprayed through an ultrasonic atomizer at a frequency of 50 kHz at a coating amount of 4 g / m². 2 After drying, the sample was sent to a low-temperature plasma treatment device. The helium flow rate was set to 20 L / min, the oxygen flow rate to 6.7 L / min, the power to 15 kW, the pressure to 65 Pa, and the treatment time to 5 s. After treatment, the surface tension was measured using a surface tension tester and found to be 51 mN / m. Scanning electron microscopy revealed the formation of nanoscale grooves with an average depth of 40 nm on the surface.

[0062] S2: Preparation and application of primer

[0063] Weigh out 50 parts by mass of mercapto-modified polyurethane acrylate oligomer with a double bond content of 4.2 mmol / g; and 30 parts by mass of nano-silica aerogel with a particle size of 20 nm and a specific surface area of ​​800 m². 2 The mixture consisted of 20 parts γ-methacryloyloxypropyltrimethoxysilane and 10 parts photoinitiator 184, with 1.2 parts dopamine-nanocellulose complex added. The mixture was prepared by reacting dopamine (2 g / L) and nanocellulose (1 g / L), and 1.0% silver nanoparticles (20 nm particle size) were added. The mixture was stirred at 3000 rpm for 40 min using a high-speed disperser and then ultrasonically degassed for 20 min. Coating was performed using a gravure printing press with an anilox roller of 180 lines / inch, with a coating weight of 10 g / m². 2 Dry in an 88℃ hot air circulating oven for 6.5 minutes.

[0064] S3: Preparation of intermediate coating

[0065] Weigh out 60 parts by mass of an aqueous polyurethane dispersion with a solid content of 40% and a molecular weight of 40,000; 40 parts of a carbon nanotube forest with a height of 6 μm and a diameter of 15 nm; 20 parts of nano-sized mica powder with an aspect ratio of 80:1; 10 parts of phase change microcapsules with an octadecane core material, a particle size of 8 μm, and a latent heat of phase change of 200 J / g; and add 1.5 parts of a film-forming aid, dipropylene glycol butyl ether. Grind the mixture using a three-roll mill to a fineness ≤15 μm. Apply the coating using a reverse roller coating machine with a coating amount of 20 g / m². 2 Dry in an infrared drying oven at 140℃ for 15 minutes. This step omits the magnetic field induction treatment.

[0066] S4: Preparation and application of skin-feeling surface coating

[0067] Weigh out 80 parts by mass of a fluorinated acrylate-siloxane block copolymer (fluorine content 14%, siloxane segments 30%), 20 parts of hyperbranched polyester resin, 25 parts of nano-sized titanium dioxide (particle size 38nm), 15 parts of silicone-modified polytetrafluoroethylene slip agent, and add 0.6 parts of photochromic spiropyran dye (maximum absorption wavelength 340nm). Emulsify at 5000rpm for 30min using a high-shear emulsifier. Coat with a micro-grooved roller at a coating weight of 8g / m². 2 In the UV-LED curing equipment, curing is performed in three stages: the first stage is 400mJ / cm². 2 The second segment is 400mJ / cm 2 The third segment is 400mJ / cm 2 Total curing energy 1200mJ / cm 2 .

[0068] S5: Composite lamination

[0069] A 12mm thick plywood with a surface roughness Ra of 1.0μm was selected. A 90nm thick silica transition layer was formed on the substrate surface using chemical vapor deposition. The coated paper and substrate were placed in a vacuum hot press laminator, with the temperature set at 88℃, pressure at 6.5MPa, and vacuum at -0.075MPa, and held for 20s. Subsequently, hot steam at 88% humidity and 80℃ was introduced for 3.5min. After lamination, ultraviolet ozone treatment was performed at a wavelength of 254nm and an ozone concentration of 12mg / m³. 3 Processing time: 9 minutes.

[0070] Comparative Example: Traditional Skin-like Paper Composite Process

[0071] S1: Substrate processing

[0072] Select a quantitative dose of 180g / m 2 The decorative base paper undergoes only corona treatment at a power setting of 8kW. After treatment, the surface tension is measured using a surface tension tester, reaching 38mN / m.

[0073] S2: Primer

[0074] Weigh 100 parts of ordinary polyurethane primer according to the specified mass ratio, and stir at 1500 rpm for 20 minutes using a high-speed disperser to ensure uniformity. Apply the primer using a gravure printing press with an anilox roller of 120 lines / inch, at a coating weight of 15 g / m². 2 Dry in a 100℃ hot air circulating oven for 10 minutes.

[0075] S3: Intermediate Coat

[0076] Weigh out 80 parts by weight of water-based acrylic paint and 20 parts by weight of ordinary matting powder, and mix them thoroughly using a high-speed disperser at 1800 rpm for 25 minutes. Use a reverse roller coating machine with a coating amount of 25 g / m². 2 Dry in an infrared drying oven at 130℃ for 20 minutes.

[0077] S4: Topcoat

[0078] Weigh 100 parts of ordinary UV skin-feel coating according to the specified mass ratio, and emulsify it for 15 minutes at 3000 rpm using a high-shear emulsifier. Apply the coating using a micro-grooved roller, with a coating amount of 12 g / m². 2 In a UV curing device, 800 mJ / cm is applied in a single application. 2 It is cured by UV energy.

[0079] S5: Composite

[0080] Medium-density fiberboard (MDF) with a thickness of 18 mm and a surface roughness Ra of 1.0 μm was selected. The coated paper and the substrate were placed in a hot press laminator, with the temperature set at 120℃, the pressure at 3 MPa, and the pressure held for 15 seconds. No steam treatment or ultraviolet ozone treatment was performed.

[0081] The performance comparison between the examples and the comparative examples is shown in the table below:

[0082] Table 1

[0083] Testing items Example 1 Example 2 Example 3 Comparative Example RCA (Revenue Capacity) 215 190 205 120 Stain resistance rating 5 5 5 3 Touch rating 9.2 9.5 9.0 7.5 Yellowing resistance rating 4 4 4 2 Antibacterial rate (E. coli) - - 99.8% - Gloss (60°) 25 12 28 40

[0084] The following table compares the coating structure parameters of different embodiments:

[0085] Table 2

[0086] Example Example 1 Example 2 Example 3 Primer thickness (μm) 8 9 7 Intermediate coating thickness (μm) 15 16 14 Topcoat thickness (μm) 7 8 6 Total thickness (μm) 30 33 27

[0087] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A process for laminating a high polymer coated paper to a skin surface, characterized in that, It comprises the following steps: S1: substrate pretreatment, the base paper is sent into a low-temperature plasma treatment device, a mixed gas of helium and oxygen is introduced, and the surface is formed with a nano-scale groove structure under the conditions of a power of 12-18kW and a gas pressure of 50-80Pa; S2: preparation and coating of the primer solution, the primer solution is composed of thiol-modified polyurethane acrylate oligomers, nano-silica aerogel, gamma-methacryloxypropyltrimethoxysilane, and photoinitiator 184 in a mass ratio of 5:3:2:1, and 0.8-1.5% of dopamine-nanocellulose composite is added, and the coating is carried out by gravure printing, and the coating is dried at 85-95℃ for 6-9min, and a reaction occurs: a double network structure of siloxane crosslinking and thiol-ene click reaction is formed; S3: preparation of the intermediate coating, the intermediate coating is composed of waterborne polyurethane dispersion, carbon nanotube forest, nanoscale mica powder, and phase change microcapsules in a mass ratio of 6:4:2:1, and 1-1.8% of film-forming aid dipropylene glycol butyl ether is added, and the coating is carried out by reverse roll coating, and the coating is dried at 130-150℃ for 12-18min; the core material of the phase change microcapsules is n-octadecane, and the particle size is 5-10μm; S4: skin feel topcoat preparation and application, the topcoat is composed of fluorine-containing acrylate-silicone block copolymer, hyperbranched polyether amine modified polyester resin, nanoscale titanium dioxide, silicone modified polytetrafluoroethylene slip agent in a mass ratio of 7:3:2:1, 0.5-1.2% photochromic spiropyran dye is added, micro-concave roller coating is used, and the UV-LED curing equipment is used for curing at 1000-1500 mJ / cm 2 The energy is cured in three stages; S5: composite pressing, the coated paper and the substrate are placed in a vacuum hot pressing composite machine, and pressing is carried out under the conditions of a temperature of 85-105℃, a pressure of 6-9MPa, and a vacuum degree of -0.08--0.06MPa, and the pressure maintaining time is 18-28s, and then hot steam with a humidity of 85-95% is introduced under pressure maintaining for 3-5min.

2. The process according to claim 1, wherein the process is characterized by, Also included in the S1 before the original paper ultrasonic atomization pretreatment, the mass fraction of 0.3-0.8% of nano titanium dioxide dispersion liquid atomization spraying, ultrasonic frequency 40-60kHz, spraying amount 3-5g / m 2 .

3. The process according to claim 1, wherein the process is characterized by, After the coating in S3 is coated, magnetic field induction treatment is carried out, an alternating magnetic field with a strength of 0.8-1.2T and a frequency of 15-25Hz is applied, the carbon nanotube forest is arranged in a direction, and the treatment time is 5-8min.

4. The process according to claim 1, wherein the process is characterized by, The dopamine-nanocellulose composite in S2 is prepared by reacting 1-3g / L of dopamine with 0.5-1.5g / L of nanocellulose at pH 8-9 and a temperature of 40-50℃ for 2-3h.

5. The process according to claim 1, wherein the process is characterized by, The maximum absorption wavelength of the photochromic spiropyran dye in the top coating liquid in S4 is 320-360nm, and the color change response time after irradiation is ≤10s.

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

7. The process according to claim 1, wherein the process is characterized by, The pore volume of the nano-silica aerogel in the S2 base coating liquid is 1.8-2.5 cm 3 / g, and the specific surface area is 700-900 m 2 / g.

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

9. The process according to claim 1, wherein the process is a process for laminating a skin-surface polymer coated paper, characterized by, The fluorine content of the fluorine-containing acrylate-siloxane block copolymer in S4 is 10-15%, and the siloxane segment accounts for 25-35%.

10. The process according to claim 1, wherein the process is a process for laminating a skin-surface polymer coated paper, characterized by, After the S5 composite pressing, ultraviolet ozone treatment is performed at a wavelength of 185-254 nm and an ozone concentration of 10-20 mg / m 3 for 8-12 min under the conditions.

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