Imitation stone powder wallpaper and manufacturing process thereof

Abstract

The invention discloses stone powder imitating wallpaper and a manufacturing process thereof, and relates to the field of decorative building materials. According to the stone powder imitating wallpaper and the manufacturing process thereof, the stone powder imitating wallpaper comprises a PVC board and a stone powder layer attached to the top of the PVC board, foam rubber is fixedly adhered to the bottom of the PVC board, and a release film is arranged at the bottom of the foam rubber. According to the stone powder imitating wallpaper and the manufacturing process thereof, the stone powder layer 2 is solidified and bonded on the outer surface of the PVC board through UV glue and a thermosetting value adhesive, so that the touch feeling and the visual feeling similar to those of real stone are obtained, the back face of the PVC board is bonded through foam rubber 3, when the stone powder imitating wallpaper is used, a release film 4 on the back face is torn down, and the stone powder imitating wallpaper is manufactured. The stone-like wallpaper has the advantages that the stone-like wallpaper can be directly pasted on a wall surface through the foam rubber 3, the stone-like wallpaper is rapid in visual construction, is lower in cost compared with real stone, has better visual and tactile effects compared with the traditional stone-like wallpaper in the market, and can further improve the use durability and the waterproof effect due to the fact that varnish is attached to the surface of the stone-like wallpaper.

Description

Technical Field

[0001] The invention relates to the technical field of decorative building materials, in particular to a stone powder imitation wallpaper and a manufacturing process thereof. Background Art

[0002] Nowadays, with the development of industrial materials and people's increasing requirements for decoration effects, various new types of decoration materials have gradually come into people's sight. Now, in many architectural application scenarios, both practical effects and visual aesthetics must be met.

[0003] At present, when many public places and office areas are being decorated, in order to meet artistic needs, it is usually necessary to create a stone wall effect. However, if real stone is used for construction, on the one hand, the construction period is longer and the construction requirements are higher. On the other hand, the construction cost is greatly increased. For this reason, imitation stone wallpaper is often used for pasting to achieve a similar effect. However, many imitation stone wallpapers now only achieve the effect of stone by printing corresponding patterns on the wallpaper or performing embossing. However, the actual touch and close-up visual effects are not realistic enough, and when used as exterior wall decoration, the durability is very poor, and fading, aging and cracking will soon occur. For this reason, a special imitation stone powder wallpaper and a manufacturing process thereof are provided to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an imitation stone powder wallpaper and a manufacturing process thereof, which solves the problem that currently imitation stone wallpapers are mostly used for pasting to achieve similar effects, but many imitation stone wallpapers now only achieve the effect of stone by printing corresponding patterns on the wallpaper or performing embossing processing, but the actual touch and close-up visual effects are not realistic enough.

[0005] To achieve the above objectives, the present invention is implemented through the following technical scheme: an imitation stone powder wallpaper, including a PVC board and a stone powder layer attached to the top of the PVC board, the bottom of the PVC board is fixedly adhered with foam glue, and the bottom of the foam glue is provided with a release film.

[0006] A manufacturing process of imitation stone powder wallpaper comprises the following steps: S1. Raw material preparation: prepare the PVC board, stone powder raw material, UV glue, adhesive, top coat varnish, foam glue with release film and molding mold required for the production of imitation stone powder wallpaper; S2, stone powder layer production, mixing the binder and part of the UV glue with the stone powder raw material to form the stone powder layer raw material; S3, the stone powder layer is attached to the PVC board. First, a thin layer of UV glue is sprayed on the PVC board, and then the molding mold is placed on the PVC board, and the stone powder mixture is sprayed, and then the remaining material is scraped off, and then the stone powder mixture is cured; S4, attaching the foam glue to the PVC board, and sticking the foam glue with the release film to the other side of the PVC board; S5, cutting and blanking, cutting and blanking the molding material after the step S4 is completed.

[0007] Preferably, in step S2, when making the stone powder layer, the following steps need to be followed: Step 1: Select finely ground stone powder, sieve it through a 40-mesh sieve, remove stone powder particles with a particle size greater than 0.425 mm, and sieve it twice to ensure that the stone powder is loose; Step 2: weigh UV glue and adhesive, select thermosetting resin adhesive as the adhesive, add and mix the fine grinding stone powder, UV glue and adhesive in a ratio of 22:7:3; Step 3: During the mixing process, a double-headed dragon is used to stir synchronously in both forward and reverse directions, and the stirring process is controlled within 9-14 minutes; Step 4: The mixed stone powder layer material is stored in a double-layer insulation barrel for heat preservation, and is stirred continuously during the storage process.

[0008] Preferably, in step three of making the stone powder layer, during the mixing process of the stone powder, UV glue and adhesive, water-insulated heating is adopted, and the heating temperature in summer is controlled between 35-45 degrees, and the subsequent storage temperature is kept constant at 40 degrees. The heating temperature in winter is controlled between 46-56 degrees, and the subsequent storage temperature is kept constant at 50 degrees. During the mixing and stirring process in summer, pure water is added in a ratio of 100 to 0.5 between the mixed raw materials and water to ensure the fluidity of the mixed materials.

[0009] Preferably, in step S3, when attaching the stone powder layer to the PVC board, the following steps need to be followed: Step 1: Clean the PVC board. Use 40-degree steam to clean the surface of the PVC board and then wipe it to improve the adhesion of the PVC board. Step 2: Place the mold, and place the molding mold on the surface of the PVC board for positioning; Step 3: Use a sprayer to quickly spray a thin layer of UV glue on the surface of the cleaned PVC board; Step 4: Spray the stone powder mixture into the mold, roll it quickly, and then scrape off the remaining material; Step 5: Remove the mold, use the lifting device to lift the mold vertically upward, and then remove it from the top of the PVC board; Step 6: Clean the edges and recycle the remaining materials. Clean and recycle the stone powder mixed materials attached to the mold, and recycle the remaining materials scraped off the PVC board; Step 7: UV lamp irradiation and curing. The PVC board coated with stone powder is continuously passed under the UV lamp. The moving speed should be controlled so that each part of the stone powder is irradiated with UV lamp for no less than 30 seconds. The UV lamp band adopts 395nm type. Step 8: Apply waterproof topcoat varnish. After the stone powder layer is cured and condensed on the surface of the PVC board, apply a layer of waterproof topcoat varnish evenly on the surface of the PVC board. Step nine: low-temperature baking and curing, use 65-75 degrees hot air to bake the waterproof topcoat varnish to form a dense waterproof layer on the surface of the PVC board and the stone powder layer, thereby improving the overall waterproof durability.

[0010] Preferably, during the process of attaching the stone powder layer to the PVC board, multiple thin coatings are used during the waterproof topcoat varnish coating and low-temperature baking and curing, and a circular feeding method is used to achieve alternating painting and baking, thereby ensuring uniform waterproof varnish and avoiding cracking during curing.

[0011] Preferably, the specific implementation process of step S4 is to reverse the PVC board after the stone powder layer is coated and cured, and then clean the other side of the PVC board, and then select foam glue with a release film on one side, the width of the foam glue is 2 cm greater than the width of the PVC board, and then use a positioning table to stick the foam glue to the outer surface of the PVC board, and then wipe and cut off excess foam glue along both sides of the PVC board.

[0012] Preferably, when cutting the molding material in S5, a laser cutting machine is selected for cutting to ensure a smooth cut.

[0013] The invention discloses a stone powder imitation wallpaper and a manufacturing process thereof, which has the following beneficial effects: 1. The imitation stone powder wallpaper uses UV glue and thermosetting digital adhesive to solidify and bond the stone powder layer 2 to the outer surface of the PVC board, so as to obtain a touch and visual experience close to that of real stone, and the back of the PVC board is pasted with foam glue 3. When in use, after cutting according to the actual size required, the release film 4 on the back is torn off, and then it is directly pasted on the wall with foam glue 3. The sight line is fast to construct, and the cost is lower than that of real stone. At the same time, it has better visual and tactile effects than traditional imitation stone wallpapers on the market.

[0014] 2. The manufacturing process of the imitation stone powder wallpaper is as follows: finely ground stone powder, UV glue and adhesive are mixed to form a stone powder layer mixture, and then when the stone powder layer 2 is attached to the PVC board, a thin UV glue is quickly sprayed on the surface of the cleaned PVC board 1. After the thinly coated UV glue is rolled on the stone powder mixture, the adhesion between the mixture and the PVC board 1 can be improved, and then it is cured by irradiation with a UV lamp, thereby preventing the stone powder layer from peeling off from the PVC board as a whole.

[0015] 3. The manufacturing process of the imitation stone powder wallpaper is as follows: after the stone powder layer 2 is solidified and condensed on the surface of the PVC board 1, a layer of waterproof topcoat varnish is evenly applied on the surface of the PVC board 1, and the waterproof topcoat varnish is baked with 65-75 degrees hot air to form a dense waterproof layer on the surface of the PVC board 1 and the stone powder layer 2, thereby improving the overall waterproof durability. When applying the waterproof topcoat varnish and low-temperature baking and curing, multiple thin coatings are adopted, and a circular feeding method is adopted to achieve alternating painting and baking, thereby ensuring that the waterproof varnish is even and avoiding cracking during curing. When used as an exterior wall decorative surface, it has good corrosion resistance and anti-aging effects, thereby improving the durability and waterproof effect of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the imitation stone powder wallpaper of the present invention; Figure 2 The present invention is a flowchart of the manufacturing process of the imitation stone powder wallpaper; Figure 3 This is a process flow chart of the stone powder material attached to the PVC board of the present invention.

[0018] In the figure: 1. PVC board; 2. Stone powder layer; 3. Foam glue; 4. Release film. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The embodiments of the present application provide an imitation stone powder wallpaper and a manufacturing process thereof, thereby solving the problem that currently imitation stone wallpaper is mostly used for pasting to achieve a similar effect, but many imitation stone wallpapers now only achieve the effect of stone by printing corresponding patterns on the wallpaper or performing embossing processing, but the actual touch and close-up visual effects are not realistic enough.

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] The embodiment of the present invention discloses a stone powder imitation wallpaper, such as Figure 1 As shown, it includes a PVC board 1 and a stone powder layer 2 attached to the top of the PVC board 1 , a foam glue 3 is fixedly adhered to the bottom of the PVC board 1 , and a release film 4 is provided at the bottom of the foam glue 3 .

[0023] The imitation stone powder wallpaper is prepared by curing a stone powder layer 2 on the outer surface of a PVC board 1, and curing and bonding the stone powder layer 2 to the outer surface of the PVC board using UV glue and a thermosetting digital adhesive, so as to obtain a touch and visual experience close to that of real stone, and the back of the PVC board is pasted with foam glue 3. When in use, after cutting according to the actual size required for use, the release film 4 on the back is torn off, and then the wallpaper is directly pasted on the wall with the foam glue 3. The wallpaper is quickly constructed with a line of sight and has a lower cost than real stone. At the same time, it has better visual and tactile effects than traditional imitation stone wallpapers on the market. During construction, a dense waterproof topcoat varnish is applied on the outer surface of the PVC board and the stone powder layer 2 to obtain better waterproof performance. Even if it is used in some corridors and washbasin areas, it can maintain long-term adhesion and waterproof effects and is more durable.

[0024] A manufacturing process of imitation stone powder wallpaper, such as Figure 2-3 As shown, the following steps are included; S1, raw material preparation, prepare the PVC board 1, stone powder raw material, UV glue, adhesive, top coat varnish, foam glue 3 with release film 4 and molding mold required for the production of imitation stone powder wallpaper; S2, making the stone powder layer 2, mixing the binder and part of the UV glue with the stone powder raw material to form the stone powder layer 2 raw material; the specific operation steps are as follows; Step 1: Select finely ground stone powder, sieve it through a 40-mesh sieve, remove stone powder particles with a particle size greater than 0.425 mm, and sieve it twice to ensure that the stone powder is loose; Step 2: weigh UV glue and adhesive, select thermosetting resin adhesive as the adhesive, add and mix the fine grinding stone powder, UV glue and adhesive in a ratio of 22:7:3; Step 3: During the mixing process, a double-headed dragon is used for synchronous stirring in forward and reverse directions. The stirring process is controlled within 9-14 minutes. During the mixing process of stone powder, UV glue and binder, water-insulated heating is used. The heating temperature in summer is controlled between 35-45 degrees, and the subsequent storage temperature is constant at 40 degrees. The heating temperature in winter is controlled between 46-56 degrees, and the subsequent storage temperature is constant at 50 degrees. In the summer, pure water is added in a ratio of 100 to 0.5 of the mixed raw materials and water to ensure the fluidity of the mixed materials. At the same time, in the actual production process, according to the customer's color customization needs, a colorant of no more than 0.5% can be added as a pigment when making the raw materials for the stone powder layer 2; Step 4: The mixed stone powder layer 2 material is stored in a double-layer insulation barrel for heat preservation, and is stirred continuously during the storage process. S3, the stone powder layer 2 is attached to the PVC board 1, first a thin layer of UV glue is sprayed on the PVC board 1, then the molding mold is placed on the PVC board 1, the stone powder mixture is sprayed, and then the remaining material is scraped off, and then the stone powder mixture is cured. The specific operation steps are as follows; Step 1: Clean the PVC board 1 by using 40-degree steam to clean and wipe the surface of the PVC board 1 to improve the adhesion of the PVC board 1; Step 2: Place the mold. Place the molding mold on the surface of the PVC board 1 for positioning. The mold surface is coated with a high-temperature resistant Teflon coating to prevent the stone powder from sticking. Step 3: Use a sprayer to quickly spray a thin layer of UV glue on the surface of the cleaned PVC board 1. After the thin layer of UV glue is rolled on the stone powder mixture, it can improve the adhesion between the mixture and the PVC board 1 and prevent the stone powder mixture from peeling off from the surface of the PVC board 1. Step 4: Then spray the stone powder mixture into the mold, roll it quickly, and then scrape off the remaining material. The mold height is made according to the thickness of the stone powder layer 2 to ensure uniform thickness; Step 5: Lower the mold, lift the mold vertically upward using a lifting device, and then remove it from the top of the PVC board 1. The mold port adopts an inner chamfer design to prevent the excess material from being brought out and damaging the shape of the coating material; Step 6: Clean the edges and recycle the residual materials. Clean and recycle the stone powder mixed materials attached to the mold, and recycle the residual materials scraped off the PVC board 1. The recycled stone powder mixed materials are immediately recycled and insulated to avoid being unusable after solidification. Step 7: UV lamp irradiation and curing. The PVC board 1 coated with stone powder is continuously passed under the UV lamp. The moving speed needs to be controlled so that each part of the stone powder is irradiated by the UV lamp for no less than 30 seconds. The UV lamp adopts a 395nm wavelength. The overall design of the UV lamp is a hood type. It is installed on the production line of the PVC board 1 and irradiated and cured when the PVC board 1 moves to the next processing station. Step 8: Apply waterproof topcoat varnish. After the stone powder layer 2 is cured and condensed on the surface of the PVC board 1, a layer of waterproof topcoat varnish is evenly applied on the surface of the PVC board 1. Step nine, low-temperature baking and curing, use 65-75 degrees hot air baking waterproof top varnish to form a dense waterproof layer on the surface of PVC board 1 and stone powder layer 2, improve the overall waterproof durability, when applying waterproof top varnish and low-temperature baking and curing, adopt multiple thin coating methods and circular feeding method to achieve alternating painting and baking, so as to ensure uniform waterproof varnish and avoid cracking during curing.

[0025] S4, the foam glue 3 is attached to the PVC board 1, and the foam glue 3 with the release film 4 is pasted on the other side of the PVC board 1. The specific implementation process is to reverse the PVC board 1 after the stone powder layer 2 is coated and cured, and then clean the other side of the PVC board 1, and then select the foam glue 3 with a release film 4 on one side, the width of the foam glue 3 is 2 cm larger than the width of the PVC board 1, and then use the positioning table to paste the foam glue 3 so that it adheres to the outer surface of the PVC board 1, and then wipe and cut off the excess foam glue 3 along both sides of the PVC board 1; S5, cutting and blanking, cutting and blanking the molding material after the completion of step S4, the process uses a laser cutting machine for cutting to ensure that the cut is smooth.

[0026] In the anti-aging durability test of this imitation stone powder wallpaper, the experimental environment and data performance are as follows; The imitation stone powder wallpaper was subjected to an aging test through the above four experimental groups. Experimental groups 1-4 simulated the external environments of winter, spring, autumn and summer respectively (without considering the specific conditions and rainfall throughout the day). Among the four experimental groups, the chromaticity of the samples in experimental group 1 decreased by 0.03%, and there was no crack on the surface; the chromaticity of the samples in experimental group 2 decreased by 0.05%, and there was no crack on the surface; the chromaticity of the samples in experimental group 3 decreased by 0.04%, and there was no crack on the surface; the chromaticity of the samples in experimental group 4 decreased by 0.07%, and there was no crack on the surface, and it was slightly yellowed. After verification by the above test data, it was calculated that the chromaticity decrease rate of the imitation stone powder wallpaper under ideal conditions is about 3% per year, and the aging rate is 4.5% per year. Considering the actual special external environment, the comprehensive aging rate is 6%. When the aging rate exceeds 55%, it is regarded as scrapped. Therefore, it is concluded that the actual service life of this product is about 9-11 years. Compared with the 4-5 years of service life of similar products, the durability is more than doubled, so it has very good practical application and promotion significance.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A stone powder imitation wallpaper, characterized in that: It comprises a PVC board (1) and a stone powder layer (2) attached to the top of the PVC board (1), wherein a foam glue (3) is fixedly adhered to the bottom of the PVC board (1), and a release film (4) is provided at the bottom of the foam glue (3).

2. The manufacturing process of the imitation stone powder wallpaper according to claim 1, characterized in that: It includes the following steps: S1, raw material preparation, preparing the PVC board (1), stone powder raw material, UV glue, adhesive, top coat varnish, foam glue (3) with release film (4) and molding mold required for the production of imitation stone powder wallpaper; S2, making the stone powder layer (2), mixing the binder and part of the UV adhesive with the stone powder raw material to form the stone powder layer (2) raw material; S3, the stone powder layer (2) is attached to the PVC board (1), firstly a thin layer of UV glue is sprayed on the PVC board (1), then the molding mold is placed on the PVC board (1), the stone powder mixture is sprayed, then the remaining material is scraped off, and then the stone powder mixture is cured; S4, the foam glue (3) is attached to the PVC board (1), and the foam glue (3) with the release film (4) is attached to the other side of the PVC board (1); S5, cutting and blanking, cutting and blanking the molding material after the step S4 is completed.

3. The manufacturing process of the imitation stone powder wallpaper according to claim 2 is characterized in that: In the step S2, when preparing the stone powder layer (2), the following steps need to be followed: Step 1: Select finely ground stone powder, sieve it through a 40-mesh sieve, remove stone powder particles with a particle size greater than 0.425 mm, and sieve it twice to ensure that the stone powder is loose; Step 2: weigh UV glue and adhesive, select thermosetting resin adhesive as the adhesive, add and mix the fine grinding stone powder, UV glue and adhesive in a ratio of 22:7:3; Step 3: During the mixing process, a double-headed dragon is used to stir synchronously in both forward and reverse directions, and the stirring process is controlled within 9-14 minutes; Step 4: The mixed stone powder layer (2) material is stored in a double-layer insulation barrel for heat preservation, and is stirred continuously during the storage process.

4. The manufacturing process of the imitation stone powder wallpaper according to claim 3 is characterized in that: In step 3 of making the stone powder layer (2), water-insulated heating is used during the mixing process of the stone powder, UV glue and binder. The heating temperature in summer is controlled between 35 and 45 degrees, and the subsequent storage temperature is kept constant at 40 degrees. The heating temperature in winter is controlled between 46 and 56 degrees, and the subsequent storage temperature is kept constant at 50 degrees. In addition, during the mixing and stirring process in summer, pure water is added in a ratio of 100 to 0.5 of the mixed raw materials to water to ensure the fluidity of the mixed materials.

5. The manufacturing process of the imitation stone powder wallpaper according to claim 4 is characterized in that: In the step S3, when attaching the stone powder layer (2) to the PVC board (1), the following steps need to be followed: Step 1: Clean the PVC board (1). Use 40-degree steam to clean the surface of the PVC board (1) and then wipe it to improve the adhesion of the PVC board (1); Step 2: placing the mold, placing the molding mold on the surface of the PVC board (1) for positioning; Step 3: Use a sprayer to quickly spray a thin layer of UV glue on the surface of the cleaned PVC board (1); Step 4: Spray the stone powder mixture into the mold, roll it quickly, and then scrape off the remaining material; Step 5: Lower the mold, use a lifting device to lift the mold vertically upward, and then remove it from the top of the PVC board (1); Step 6: cleaning the edges and recovering the residual materials. The stone powder mixed material attached to the mold is cleaned and recovered, and the residual materials scraped off the PVC board (1) are recovered at the same time; Step 7: UV light irradiation and curing: the PVC board (1) coated with stone powder is continuously passed under the UV light at a moving speed such that each part of the stone powder is irradiated with the UV light for no less than 30 seconds. The UV light wavelength is 395nm. Step 8: Applying waterproof finishing varnish: after the stone powder layer (2) is cured and condensed on the surface of the PVC board (1), a layer of waterproof finishing varnish is evenly applied on the surface of the PVC board (1); Step nine: low-temperature baking and curing: use 65-75 degrees hot air to bake the waterproof topcoat varnish to form a dense waterproof layer on the surface of the PVC board (1) and the stone powder layer (2).

6. The manufacturing process of the imitation stone powder wallpaper according to claim 5, characterized in that: During the process of attaching the stone powder layer (2) to the PVC board (1), during the waterproof topcoat varnish coating and low-temperature baking and curing, multiple thin coatings are applied and a circular feeding method is used to achieve alternating painting and baking.

7. The manufacturing process of the imitation stone powder wallpaper according to claim 6 is characterized in that: The specific implementation process of step S4 is to reverse the PVC board (1) after the stone powder layer (2) is coated and cured, and then clean the other side of the PVC board (1), and then select a foam glue (3) with a release film (4) on one side, the width of the foam glue (3) is greater than the width of the PVC board (1) by 2 cm, and then use a positioning table to stick the foam glue (3) to the outer surface of the PVC board (1), and then wipe and cut off the excess foam glue (3) along both sides of the PVC board (1).

8. The manufacturing process of the imitation stone powder wallpaper according to claim 7 is characterized in that: When cutting the molding material in S5, a laser cutting machine is selected for cutting.

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