Economical and environment-friendly wallpaper as well as production method and application thereof

Abstract

The invention discloses economical and environment-friendly wallpaper and a production method and application thereof. The production method comprises the following steps: S1, combined design of a relief printing plate gap embossing roller, a rotary screen printing plate wheel and a precision coating machine; s2, slurry adjustment is conducted, specifically, the slurry is PVC slurry with thixotropic performance or water-based ceramic chip crack uniformizing slurry, the color is adjusted, and chip scraping is conducted; s3, a scraper in a printing unit of the rotary screen printing coating machine is installed, and the embossing gap of a relief printing plate gap embossing roller is adjusted; s4, bottom layer slurry is injected for rotary screen printing, and a wet pattern material obtained after rotary screen printing is fed into a drying oven to be heated to be in a semi-gel state; s5, injecting surface layer slurry to perform surface layer coating printing, and performing surface treatment on the wet slurry after surface layer printing; s6, drying and plasticizing after wet relief printing plate gap embossing; and S7, recycling waste raw materials. According to the invention, the waste raw materials can be quickly recycled without storage, so that the inventory pressure is reduced, and meanwhile, the loss caused by improper storage can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wallpaper, in particular to an economical and environment-friendly wallpaper and a production method and application thereof. BACKGROUND

[0002] The wallpaper product is an indoor decoration material formed by combining various printing processes and requiring high-temperature heating, foaming, embossing and other processes. It is an indoor art product based on pattern design, using different processing technology as a means, and aiming to enrich people's material and cultural life and promote spiritual enjoyment. Since the product is mainly used for indoor decoration, it also needs to reflect the individual beauty of human nature, highlight fashion, and constantly have the innovative spirit of "indoor fashion". It is these characteristics of the wallpaper product that determine that its production process covers all the processes of current printing technology. The most common processes are the following three:

[0003] 1. The register embossing process based on intaglio printing, which has the advantages of clear printing texture and rich colors, but the disadvantages of large investment in plate wheels, simple process, rigid product style, no individualization, and poor three-dimensional effect on the wall.

[0004] 2. The rotary screen printing coating process based on rotary screen printing, which has the advantages of combining formula technology with printing process, promoting product diversity, providing distinct three-dimensional effect, and meeting different needs in visual and tactile perception, and fast product renewal. However, due to the lack of formula technicians and process designers in each wallpaper production enterprise, self-process innovation is less.

[0005] 3. The flat printing process based on offset flat printing, which is the most traditional printing process. Due to the limitations of the process, it can only produce general flat printing wallpaper, so the product has a very small market in the domestic market.

[0006] At present, the waste raw materials generated in the processing of wallpaper cannot be quickly recycled and utilized, and need to be stored first and then treated, which increases the inventory pressure and is prone to loss due to improper storage. SUMMARY

[0007] The purpose of the present application is to provide an economical and environment-friendly wallpaper and a production method and application thereof, to solve the technical problem that the waste raw materials generated in the processing of current wallpaper cannot be quickly recycled and utilized, and need to be stored first and then treated, which increases the inventory pressure and is prone to loss due to improper storage.

[0008] To solve the above technical problems, the present application adopts the following technical solutions:

[0009] The application discloses an economical and environment-friendly wallpaper production method, which comprises the following steps:

[0010] S1, combination design of the relief gap embossing roller, the rotary screen printing plate wheel and the precision coating machine;

[0011] S2, slurry adjustment, the slurry is PVC slurry or water-based porcelain sheet uniform crack slurry with thixotropy, and the color is adjusted according to the design requirement, and the slurry is scraped;

[0012] S3, installation of the scraper in the printing unit of the rotary screen printing coating machine, adjustment of the coating gap thickness of the precision coating machine according to the product design requirement, and adjustment of the embossing gap of the relief gap embossing roller;

[0013] S4, injection of the bottom layer slurry for rotary screen printing, and sending of the wet material of the rotary screen printing pattern into a drying oven to be heated to a semi-gel state;

[0014] S5, injection of the surface layer slurry for surface layer coating printing, and surface treatment of the wet slurry after surface layer printing;

[0015] S6, drying and plasticizing after wet relief gap embossing;

[0016] S7, waste material recycling, conveying of the waste material to a crusher through a finished product conveying belt, and crushing of the waste material into waste material particles through the crusher; the crushed waste material particles are conveyed to a hydrolysis container through a shunt conveying belt for hydrolysis, the waste material particles increase the contact area with the hydrolysis solution through stirring, so that the crushed material can be quickly hydrolyzed, and the hydrolyzed material is conveyed back to the production line through a recycling conveying channel for material recycling, so as to circularly operate.

[0017] Further, the step S3 further comprises the following steps:

[0018] S301, placing the rotary screen inner scraper sheet on the inner scraper sheet mounting frame according to the process requirement, adjusting the size of the inner scraper sheet and straightening the inner scraper sheet, and locking the inner scraper sheet pressing plate bolt;

[0019] S302, mounting the rotary screen plate wheel with a carved pattern on the printing unit of the rotary screen printing machine, then mounting the inner scraper sheet with the adjusted size into the rotary screen plate wheel, fixing the position and locking on the rotatable frame, and then adjusting the inner scraper position and the inner scraper pressure;

[0020] S303, adjusting the coating gap thickness of the precision coating machine according to the product design requirement;

[0021] S304, mounting the relief embossing roller on the machine base and connecting the servo drive, and accurately adjusting the embossing gap.

[0022] Further, the step S4 further includes the following steps:

[0023] S401, install the automatic liquid level control meter into the printing round net, and inject the PVC slurry with thixotropy or the water-based ceramic tile uniform crack slurry with a delivery pump into the round net printing unit; transfer print the pattern according to the process requirement, and send the wet material of the round net printed pattern into a drying oven to heat to a semi-gel state, and the heating temperature is adjusted according to the production line speed;

[0024] S402, cool the warm rolling roller to below 50 degrees Celsius.

[0025] Further, the step S5 further includes the following steps:

[0026] S501, introduce the substrate with the printed bottom layer into the second section of the production line, and do face layer coating and register printing on the precision coating machine unit;

[0027] S502, do surface treatment on the wet slurry after the face layer printing, and the treatment method is to use a low-frequency heater to make the surface film instantaneously.

[0028] Further, the step S6 further includes the following steps:

[0029] S601, adjust the embossing gap according to the pattern design requirement, then parallelly press down the relief embossing roller, the contact point between the relief embossing roller and the substrate is non-hard contact, and the speed slip is not more than ±2mm in the longitudinal direction, and the slurry is extruded on the embossed edge through the mechanical slip;

[0030] S602, dry and plasticize after the wet relief gap embossing, and the dry plasticizing temperature is matched with the production line speed;

[0031] S603, surface treatment and product cooling.

[0032] Further, the step S603 further includes the following steps:

[0033] S60301, the product after heating and plasticizing is subjected to surface leveling treatment;

[0034] S60302, after the product is cooled to below 30 degrees Celsius, the wet relief embossed wallpaper product with various embossed edges and texture and variable structure levels is produced.

[0035] Further, the circumference of the roller type relief plate roller is 635-656mm, and the pattern is continuous carving design, and the pattern carving depth is 1-5mm.

[0036] Further, the precision coating machine adopts knife coating or reverse roller coating, the design width is greater than 500mm, and the printing pattern is registered, the registration tolerance is less than 0.3mm, and the number of printing register is 1-4 printing positions.

[0037] The application further provides an economical and environment-friendly wallpaper prepared by the production method, which comprises a wallpaper body, and a three-dimensional embossing printed on one side of the wallpaper body, wherein the three-dimensional embossing is continuous intaglio embossing, and the three-dimensional embossing is formed by solidification of the slurry under the rotation of the relief roller.

[0038] The application further provides an application of the economical and environment-friendly wallpaper as wall paper or protective paper for protecting a wall surface and improving the aesthetic appearance of the wall surface.

[0039] Compared with the prior art, the application has the following beneficial effects:

[0040] 1. The application processes the waste materials in the production process by first crushing the waste materials into fine particles by using a high-speed crusher, then performing paper-plastic separation, mixing the plastic part with part of new materials to re-pelletize, and using the re-pelletized materials to make floor tiles, and selling the paper powder to a building material factory to manufacture anti-cracking mortar, thereby protecting the wall from leakage, without the need of storage, reducing the pressure of inventory, and avoiding loss due to improper storage.

[0041] 2. The application combines wet relief gap embossing and coating registration printing, and uses the special effect printing slurry, i.e., the PVC slurry with thixotropic properties and the water-based ceramic crack slurry, and the process combination of the different mesh specifications of the rotary screen, to solve the technical problem of roller sticking in the relief gap embossing, and to create necessary conditions for ensuring the implementation of the process.

[0042] 3. The application produces the wallpaper products with various relief edge textures and structure levels by modifying different water-based and oil-based materials and adjusting the processing temperature, and opens up people's vision with a brand-new technology, and changes the traditional process that the production of thermoplastic and thermosetting products can only be embossed after plasticization and solidification.

[0043] 4. The application is based on the process and design improvement of the traditional rotary screen printing and coating technology and the relief wet gap embossing technology, and the combination of the high thixotropic printing slurry and the water-based ceramic crack slurry, to produce the wet relief embossed wallpaper products with various patterns, textures and structure levels. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1The photo shows the raised lace edge after wet pressing; the photo is a product produced by wet gap embossing, which shows the effect of a product after wet gap embossing process. The slurry used is thixotropic PVC slurry. The raised part of the flower edge in the photo shows the process effect of this invention.

[0045] Figure 2 The image shows a photograph of the cracked surface of the magnetic sheet of this invention. The image shows the cracked surface effect of the magnetic sheet without wet gap embossing. The slurry used is the water-based ceramic tile cracking slurry proposed in the patent description of this invention. The image only shows the general effect of the cracking slurry for the magnetic sheet.

[0046] Figure 3 This is a photograph of the uniform cracking effect of wet-pressed gap embossing according to the present invention. This photograph is a special effect photograph produced by wet-pressed gap embossing. The photograph shows that after the wet-pressed gap embossing process is used in the same pattern, the uniform cracking effect of the embossed part is fundamentally changed.

[0047] Figure 4 This is a schematic diagram of the first form of wet-pressed gap embossing according to the present invention;

[0048] Figure 5 This is a schematic diagram of the second form of wet-pressed gap embossing according to the present invention;

[0049] Figure 6 This is a structural schematic diagram of the third form of wet-pressed gap embossing according to the present invention;

[0050] Figure 7 This is a structural schematic diagram of the fourth form of wet-pressed gap embossing according to the present invention;

[0051] Figure 8 This is a structural schematic diagram of the fifth form of wet-pressed gap embossing according to the present invention.

[0052] Explanation of the attached labels: 1. Wallpaper body; 2. 3D embossing. Detailed Implementation

[0053] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0054] Example 1

[0055] like Figures 1 to 8 As shown, the production method of the economical and environmentally friendly wallpaper in this embodiment 1 includes the following steps:

[0056] S1 is a combination design of letterpress gap embossing roller, rotary screen printing plate wheel, and precision coating machine.

[0057] The preferred roller type relief plate roller circumference is 635-656 mm, the pattern is a continuous engraved design, the pattern engraving depth is 1-5 mm, the printing round net specification is an outer diameter circumference of 641 mm, the opening mesh is 20-80 meshes, the precision coater adopts knife coating or reverse roll coating, the design width is greater than 500 mm, and the printing pattern can be registered, and the registration tolerance is less than 0.3 mm; or an unregistered abstract pattern design can be used, and the printing register number is 1-4 printing positions.

[0058] S2, slurry adjustment, selecting PVC slurry or water-based ceramic sheet crack slurry with thixotropy, adjusting the color according to the design requirements, and scraping the sheet.

[0059] S3, installation of the scraper in the printing unit of the round net printing coater.

[0060] S301, place the round net scraper sheet on the sheet mounting frame, place the inner scraper sheet on the inner scraper sheet mounting frame according to the process requirements, accurately adjust the size of the inner scraper sheet and straighten the inner scraper sheet, and then lock the inner scraper sheet with the pressing bolt.

[0061] S302, install the round net plate wheel with engraved patterns on the printing unit of the round net printing machine, then install the inner scraper sheet with adjusted size into the round net plate wheel, fix the position, lock and fix on the rotatable frame, adjust the inner scraper position and the inner scraper pressure; the inner scraper position is 40-80 mm, and the inner scraper pressure is 0.5-1.0 kg / m 2 .

[0062] S303, adjust the precision coater coating gap thickness to be between 0.05-2.0 mm according to the product design requirements.

[0063] S304, install the relief plate embossing roller on the machine base and connect the servo drive, and accurately adjust the embossing gap.

[0064] S4, inject the bottom layer slurry for round net printing.

[0065] S401, install the automatic liquid level control meter into the printing round net, and inject the PVC slurry or water-based ceramic sheet crack slurry with thixotropy and adjusted color into the round net printing unit with a delivery pump; transfer print the pattern according to the process requirements, and send the round net printed pattern wet material to the drying oven for heating to a semi-gel state, and the heating temperature is adjusted according to the production line speed, generally between 100-200 degrees Celsius.

[0066] S402, cool the tempering roller to below 50 degrees Celsius.

[0067] S5, inject the surface layer slurry for surface layer coating printing.

[0068] S501. Introduce the pre-printed substrate into the second stage of the production line, either the rotary screen printing unit or the precision coating machine unit, for top layer coating and plate-matching printing.

[0069] S502. The wet paste after the surface layer printing is surface treated by using a medium-low frequency heater to instantly form a film on the surface.

[0070] S6, wet relief embossing.

[0071] S601. After adjusting the embossing gap according to the pattern design requirements, press down the relief embossing roller in parallel. The contact point between the relief embossing roller and the substrate is non-rigid contact, and there is a speed difference of no more than ±2mm in the longitudinal direction. The slurry is raised on the edge of the pattern by the extrusion of the mechanical difference. The width of wet relief embossing production is 300 mm to 2000 mm.

[0072] Specifically, the product can also undergo secondary surface embossing, which requires the use of an outer span felt ink transfer roller and a washing roller. The roller diameter is 10-250 mm, the effective working surface width is 300-2000 mm, the gap between the outer span roller and the substrate is 0.05-1.5 mm, and the roller speed should be adjusted synchronously with the production line.

[0073] Furthermore, wet gap relief embossing produces irregular textures with a minimum interval of 0.03 mm and a maximum interval of 30 mm. The textures are distributed in a continuous, uninterrupted, irregular curve. Due to the slippage caused by the relief embossing process and the change in surface tension caused by the external force acting on the wet material after relief embossing, the embossed coating surface has a sloping structure with convex edges, and the texture is distributed in a straight line following the curve of the pattern.

[0074] S602. After wet embossing, the material is dried and plasticized. The drying and plasticizing temperature is matched with the production line speed. Generally, the temperature range is not less than 150 degrees Celsius, and the production line speed is 5-50 meters per minute.

[0075] S603, surface treatment and product cooling.

[0076] S60301. If a product that has been heated and plasticized requires further surface smoothing, there are two methods for surface flattening: a) Surface printing is performed after surface flattening, and the flattening method is cold rolling hard gap embossing; b) Surface heat-pressing is performed by reheating to eliminate surface bumps before surface printing, and the heat-pressing method is hot rolling flexible gap embossing.

[0077] S60302. After the product is cooled to below 30 degrees Celsius, wet-process relief embossed wallpaper products with diverse raised edge textures and varied structural layers can be produced.

[0078] S7. Waste material recycling.

[0079] S701, the waste raw material is crushed, and the waste raw material is conveyed to a crusher through a finished product conveying belt, and the waste raw material is crushed into waste raw material particles through the crusher;

[0080] S701, the waste raw material is hydrolyzed, and the crushed waste raw material particles are conveyed to a hydrolysis container through a shunt conveying belt for hydrolysis, the contact area of the waste raw material particles with the hydrolysis solution is increased through stirring, so that the crushed material can be quickly hydrolyzed, and the material after hydrolysis is returned to the production line through a recovery conveying channel for material recycling, and the cycle operation is carried out, and the processing method of the waste raw material in the production process is as follows: the waste material is first crushed into fine particles by a high-speed crusher, then paper and plastic are separated, the plastic part is mixed with part of new material to be re-pelletized for making floor tiles, and the paper powder is sold to a building material factory for manufacturing anti-cracking mortar, which protects the wall from leakage, without storage, reduces the pressure of inventory, and is not easy to be lost due to improper storage.

[0081] It should be noted that the rotary screen printing drying temperature process control during product processing and the process temperature control before and after the relief gap embossing determine the texture effect of the product, when the product thickness is unchanged, the temperature increases with the increase of the line speed when the production line speed changes, and vice versa.

[0082] The slope effect of the embossed part of the product after embossing is formed by the mechanical speed difference in the gap embossing process, and under the condition that the thickness is unchanged, the smaller the embossing gap, the less obvious the slope formed by the difference, and the higher the lace protrusion under the action of the difference; on the contrary, the larger the gap between the relief and the substrate, the smaller the slope effect, and the smaller the lace protrusion height.

[0083] The PVC slurry with thixotropy used in the application can also be called thixotropic PVC plastic paste, which is mainly used for various PVC printing and coating, and the product has the characteristics of high paste viscosity, and the viscosity does not change under high shear rate during high shear printing and coating, especially suitable for rotary screen coating printing, and the printed product has the special effects of clear flower-shaped corner, regular printing dot and obvious edge protrusion.

[0084] The main raw material components of the PVC slurry are: PVC paste resin, DOP or DINP plasticizer, barium-zinc heat stabilizer, colorant, and filler.

[0085] Process requirements of PVC paste: The thixotropic PVC paste belongs to low volatile oily paste, so it must be cured or plasticized at a high temperature above 130 degrees Celsius after printing to do overprinting. The thixotropic PVC paste must maintain the original viscosity during production, and the customer cannot use ordinary viscosity reducer to reduce viscosity. If the product production must reduce the viscosity of the paste, the special material should be used to reduce viscosity under the guidance of the professional and technical personnel in the factory. The pigments used for color matching of the thixotropic PVC paste must be tested successfully in the laboratory before color matching, and special attention should be paid to the dispersant in the pigment which may change the performance of the thixotropic PVC paste. Although the thixotropic PVC paste can be printed with water-based ink after curing, attention should be paid to the fact that the two materials cannot be blended when used at the same time.

[0086] Safety of PVC paste: The thixotropic PVC paste does not contain harmful substances directly to people, and the product meets the EU ROHS environmental protection instruction.

[0087] The water-based ceramic sheet even crack paste used in the application can also be called water-based crack paste, which is a special water-based paste produced by Tianjin Changyanggu Plastic Technology Development Co., Ltd. and mainly applied to the surface printing and coating of wallpaper, artificial leather, floor leather and textile. The product is characterized in that the surface of the base material printed after printing and coating of the water-based ceramic sheet even crack paste produces irregular surface cracks at a certain process temperature, and the texture of the cracks changes differently with adjustment of the processing technology.

[0088] Main raw material components of the water-based ceramic sheet even crack paste: acrylic emulsion, talcum powder, titanium dioxide and pure water.

[0089] Process requirements of the water-based ceramic sheet even crack paste: The water-based ceramic sheet crack paste belongs to water-based paste, so it must be cured at a high temperature above 130 degrees Celsius after printing to do overprinting.

[0090] The water-based ceramic sheet crack paste must maintain the original viscosity during production, and the customer cannot reduce viscosity. If the product production must reduce the viscosity of the paste, the special material should be used to reduce viscosity under the guidance of the professional and technical personnel in the factory.

[0091] The pigments used for color matching of the water-based ceramic sheet crack paste must be tested successfully or color matched again, and special attention should be paid to the dispersant in the pigment which may change the performance of the water-based ceramic sheet crack paste.

[0092] Although the water-based ceramic sheet crack paste can be used together with oily PVC paste to do printing and overprinting after curing, attention should be paid to the fact that the two materials cannot be blended when used at the same time.

[0093] Safety of water-based ceramic tile crack slurry: the water-based ceramic tile crack slurry formula does not contain harmful substances directly to people, and will not harm the human body, and is an environmentally friendly product. The product meets the EU ROHS environmental protection instruction.

[0094] Example 2

[0095] The economic and environmentally friendly wallpaper of this embodiment 2 is prepared by the production method of the economic and environmentally friendly wallpaper, comprising a wallpaper body 1, one side of the wallpaper body 1 is printed with a three-dimensional embossing 2, the three-dimensional embossing 2 is a continuous intaglio embossing, and the three-dimensional embossing 2 is formed by curing the slurry under the rotation of the relief roller.

[0096] Example 3

[0097] The economic and environmentally friendly wallpaper of this embodiment 3 is used as a wallpaper or a protective sticker to protect the wall surface and improve the aesthetic appearance of the wall surface.

[0098] Example 4

[0099] Figure 1 The materials, pattern mold and operating process parameters selected for the medium-wet embossed lace raised wallpaper are as follows:

[0100] 1. The slurry uses PVC slurry with thixotropy, with a brand BX-02.

[0101] 2. The rotary screen coating uses a standard printing rotary screen with a mesh size of 40 meshes, and the number of printing masks is 2.

[0102] 3. The wet gap embossing roller has a circumference of 656 mm, a width of 900 mm, and a pattern engraving depth of 3.0 mm.

[0103] 4. Process parameters: inject the PVC special slurry into the rotary screen printing machine, the printing thickness is 0.15 mm, the production line speed is 20 meters / minute. The oven temperature is 175℃. The embossing gap is 0.5 mm, and the mechanical slip is less than 2 mm.

[0104] Example 5

[0105] Figure 2 The material, pattern mold and operating process parameters selected for the medium-wet embossed lace raised wallpaper are as follows:

[0106] 1. The slurry uses water-based ceramic tile crack slurry with a brand GL00 and GL01.

[0107] 2. The rotary screen coating uses a standard printing rotary screen with a mesh size of 60 meshes.

[0108] 3. The coating uses a high-precision knife coater with a width of 80 mm.

[0109] 4. Process parameters: inject PVC special slurry into rotary screen printing machine, printing thickness is 0.15mm, drying oven temperature is 130 degrees Celsius.

[0110] Inject water-based ceramic crack slurry into high-precision knife coater, coating thickness is 0.15mm, production line speed is 10 meters / minute, oven temperature is 190 degrees Celsius. Figure 2

[0111] Example 6

[0112] Figure 3 The gap embossing uniform crack photo of the present application is shown in the following figure, and the selected materials, pattern mold and operating process parameters are as follows:

[0113] 1. The slurry uses water-based ceramic crack slurry GL00 and GL01.

[0114] 2. Rotary screen coating uses standard printing rotary screen, and the specification is 60 mesh.

[0115] 3. Coating uses high-precision knife coater, and the specification is 80mm in width.

[0116] 4. The wet gap embossing roller has a circumference of 656mm, a width of 900mm, and a pattern engraving depth of 3.0mm.

[0117] 5. Process parameters: inject PVC special slurry into rotary screen printing machine, printing thickness is 0.15mm, drying oven temperature is 130 degrees Celsius.

[0118] Inject water-based ceramic crack slurry into high-precision knife coater, coating thickness is 0.15mm, production line speed is 10 meters / minute.

[0119] Embossing gap is 0.5mm, embossing roller mechanical slip is less than 2mm, and oven temperature is 190 degrees Celsius.

[0120] The produced ceramic crack texture effect wallpaper is shown in the following figure. Figure 3 After embossing, the texture has changed a lot, and the wet relief embossing wallpaper product with convex edge texture and variable structure is normally produced.

[0121] The present application is based on rotary screen printing and coating printing, and through modification of coating materials and process temperature control, the relief printing roller is engraved into a relief embossing roller, and gap slip embossing is carried out under specific process conditions. When the special slurry embossing slips, the wet material in the embossing is extruded in a fixed direction, which changes the surface tension of the slurry, and the slurry is raised along the pattern edge. After heating, curing, and surface treatment, the wet relief embossing wallpaper product with convex edge texture and variable structure is produced. ​

[0122] The present application combines three processing technologies organically:

[0123] A, base layer printing coating based on rotary screen printing process, and semi-gel heating treatment of the printed wet material;

[0124] B, surface layer printing coating based on the combination of rotary screen and coating printing, and instant film-forming treatment of the wet material surface;

[0125] C, using relief gap wet embossing as the key point of product forming, process selection for different oily and aqueous paste.

[0126] The wet embossing process of the product of the present application also requires the application of PVC paste grades BTA and BTP, BX series with thixotropy, and aqueous ceramic crack paste grades GL00 and GL01. The printing paste with special effects is transferred to the printing carrier and undergoes wet gap embossing to have distinct three-dimensional printing effects, and ensures normal production of the production line at an online speed of 5-50 meters / minute, which is the process difficulty of the technical innovation.

[0127] The product produced by the present application is mainly applied to the processing of wallpaper products, and can also be applied to the processing of artificial decorative leather products. As can be seen from the drawings, the present application is not only suitable for three-dimensional texture of planar geometric square continuous patterns, but also can be applied to other abstract patterns and patterns reflecting real object texture, that is, the present application provides a wide view for the design and development of new products, especially when rotary screen printing and offset embossing are used for synchronous printing and embossing, as long as the printing and embossing slip between the two rollers is strictly controlled, a natural texture can be formed under the action of the printing paste.

[0128] The present application processes the waste raw materials by crushing and hydrolysis, and then processes them into paper again for embossing, which can be quickly recycled without storage, reducing the inventory pressure, and not easy to be lost due to improper storage, which is economic and environmentally friendly.

[0129] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements of the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. An economical and environment-friendly method for producing wall paper, characterized in that, It comprises the following steps: S1, the combination design of the relief gap embossing roller, the rotary screen printing plate wheel and the precision coater; S2, slurry adjustment, the slurry is PVC slurry or water-based ceramic tile even crack slurry with thixotropy, and the color is adjusted according to the design requirements, and the doctor blade is scraped; S3, the installation of the doctor blade in the rotary screen printing coater printing unit, the adjustment of the precision coater coating gap thickness according to the product design requirements, and the adjustment of the embossing gap of the relief gap embossing roller; S4, injecting the bottom layer slurry to perform rotary screen printing, and sending the wet material of the rotary screen printed pattern into a drying oven to heat to a semi-gel state; S5, injecting the surface layer slurry to perform surface layer coating printing, and performing surface treatment on the wet slurry after surface layer printing; S6, drying and plasticizing after wet relief gap embossing; S7, waste material recycling, conveying the waste material to the crusher through the finished product conveying belt, crushing the waste material into waste material particles through the crusher, conveying the crushed waste material particles to the hydrolysis container through the shunt conveying belt for hydrolysis, increasing the contact area of the crushed material and the hydrolysis solution through stirring, and recycling the hydrolyzed material to the production line through the recycling conveying channel for material recycling, and cyclically operating in this way.

2. The method of claim 1, wherein the wall paper is produced in an economic and eco-friendly manner. In the step S3, the following steps are further included: S301, placing the rotary screen inner doctor blade sheet on the inner doctor blade sheet mounting frame according to the process requirements, adjusting the size of the inner doctor blade sheet and straightening the inner doctor blade sheet, and locking the inner doctor blade sheet with the inner doctor blade sheet pressing bolt; S302, installing the rotary screen plate wheel with the engraved pattern on the printing unit of the rotary screen printing machine, then loading the inner doctor blade sheet with the adjusted size into the rotary screen plate wheel, fixing the position, locking on the rotatable frame, and adjusting the inner doctor blade position and the inner doctor blade pressure; S303, adjusting the precision coater coating gap thickness according to the product design requirements; S304, installing the relief embossing roller on the machine base and connecting the servo drive, and accurately adjusting the embossing gap.

3. The method of claim 1, wherein the wall paper is produced in an economic and eco-friendly manner. In the step S4, the following steps are further included: S401, loading the automatic liquid level control meter into the printing rotary screen, and injecting the PVC slurry or water-based ceramic tile even crack slurry with thixotropy and adjusted color into the rotary screen printing unit with the conveying pump; transferring and printing the pattern according to the process requirements, and sending the wet material of the rotary screen printed pattern into a drying oven to heat to a semi-gel state, and adjusting the heating temperature according to the production line speed; S402, cooling the conditioning roller to below 50 degrees Celsius.

4. The method of claim 1, wherein the wall paper is produced in an economic and eco-friendly manner. In the step S5, the following steps are further included: S501, introducing the substrate with the printed bottom layer into the second section of the rotary screen printing unit of the production line, or performing surface layer coating registration printing with the precision coater unit; S502, performing surface treatment on the wet slurry after surface layer printing, and the treatment method is to use a medium-low frequency heater to make the surface film instantaneously.

5. The method of claim 1, wherein the wall paper is produced in an economical and eco-friendly manner. In the step S6, the following steps are further included: S601, after adjusting the embossing gap according to the pattern design requirements, the relief embossing roller is pressed down in parallel, the contact point of the relief embossing roller and the base material is non-hard contact, and the speed difference is not more than ±2mm in the longitudinal direction, and the slurry is raised on the pattern edge by mechanical sliding extrusion; S602, after wet relief gap embossing, dry plasticization is carried out, and the dry plasticization temperature is matched with the production line speed; S603, surface treatment and product cooling.

6. The method of claim 5, wherein the wall paper is produced in an economic and eco-friendly manner. In the step S603, the following steps are further included: S60301, the product after heating plasticization is subjected to surface finishing treatment; S60302, after the product is cooled to below 30 degrees Celsius, a wet relief embossing wallpaper product with various convex edge textures and multiple structure levels can be produced.

7. The method of claim 1, wherein the wall paper is produced in an economic and eco-friendly manner. The circumference of the roller type relief plate roller is 635-656mm, and the pattern is continuous carving design, and the pattern carving depth is 1-5mm.

8. The method of claim 1, wherein the wall paper is produced in an economic and eco-friendly manner. The precision coater adopts knife coating or reverse roller coating, the design width is greater than 500mm, the printing pattern is made by matching, the matching tolerance is less than 0.3mm, and the number of printing matching is 1-4 printing positions.

9. An economical and environment-friendly wall paper, characterized in that, Prepared by the production method of any one of claims 1-8, comprising a wallpaper body (1), one side of the wallpaper body (1) is printed with a three-dimensional embossing (2), the three-dimensional embossing (2) is continuous gravure embossing, and the three-dimensional embossing (2) is formed by curing the slurry under the rotation of the relief roller.

10. The application of the economic and environmentally friendly wallpaper as claimed in claim 9 as wall paper or protective sticker for protecting and improving the aesthetic appearance of the wall surface.

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