An outdoor double spray cloth coated with ultra-light water-based paint and its manufacturing process

Abstract

The present application discloses an outdoor double-spray cloth coated with ultra-light water-based paint and a manufacturing process thereof, belonging to the field of advertising cloth. The outdoor double-sprayed cloth coated with ultra-light water-based paint comprises a base cloth layer, a waterproof and fireproof adhesive bottom layer and an ink receiving layer, wherein the waterproof and fireproof adhesive bottom layer is coated on two opposite sides of the base cloth layer, and the waterproof and fireproof adhesive bottom layer on one side is coated with an ink receiving layer; the base cloth is made of black and white high-strength silk; the coating for the waterproof and fireproof adhesive bottom layer comprises the following components in parts by weight: 23-30 parts of water-based thermoplastic adhesive, 6-12 parts of shading powder, 8-15 parts of fire retardant and 0.05-0.15 parts of waterproofing agent; the coating for the ink receiving layer comprises the following components in parts by weight: 8-12 parts of water-based thermoplastic adhesive, 0.5-1.5 parts of anti-ultraviolet finishing agent, 12-17 parts of hot melt powder and 1-3 parts of silicon powder; the advertising cloth has the characteristics of lightness, softness, high covering, high tensile strength, PVC-free, waterproof, fireproof, anti-ultraviolet, weldable and sprayable, and is particularly suitable for outdoor sunshade, rainproof and storefront building advertising.

Description

Technical Field

[0001] The present application relates to an outdoor double-spray cloth coated with ultra-light water-based paint and a manufacturing process thereof, and belongs to the field of advertising cloth. Background Art

[0002] Most outdoor advertising cloths are a kind of sprayable material with mesh cloth as the base material and PVC as the raw material through a certain production process. Its characteristics are that the PVC surface layer has super reflective intensity and anti-permeability; the mesh cloth base layer provides it with super tensile strength and can be directly tightened and installed, but PVC products will cause environmental pollution. The development of water-based paint can save a lot of solvents and solve environmental pollution. In the development trend of world coatings, water-based paint has become an important development direction.

[0003] Outdoor advertisements are all large-format, with high requirements for height and width. Unlimited welding and widening pose great difficulties for the installation of inkjet printing cloth. The existing inkjet printing cloth with smaller weight and lighter weight on the market uses thin mesh yarn, light weight, insufficient tensile strength, and less PVC slurry coated on the surface, resulting in insufficient coverage. Under outdoor sunlight, there are shadow interferences on the front and back of the screen. In order to ensure the quality of the picture, the back of some inkjet printing cloth can only be designed to be dark and cannot be used for printing. Advertisers can only produce double advertising pictures to ensure the strength of the advertisement, which not only increases the material cost and printing cost but also increases the installation cost. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an outdoor double-spray cloth coated with ultra-light water-based paint and a production process thereof. The base cloth layer is made of black and white high-strength silk, and a waterproof and fireproof adhesive base layer is coated on two opposite sides of the base cloth layer, and the waterproof and fireproof adhesive base layer on one side is coated with an ink receiving layer; the advertising cloth has the characteristics of being light and soft, high covering, high tensile strength, PVC-free, waterproof, fireproof, UV-resistant, weldable and sprayable.

[0005] The present invention is achieved through the following technical solutions:

[0006] An outdoor double-spray cloth coated with ultra-light water-based paint, comprising a base cloth layer, a waterproof and fireproof adhesive bottom layer and an ink receiving layer, wherein the waterproof and fireproof adhesive bottom layer is coated on two opposite sides of the base cloth layer, and the waterproof and fireproof adhesive bottom layer on one side is coated with the ink receiving layer;

[0007] The base fabric is made of black and white high-strength silk;

[0008] The coating for waterproof and fireproof adhesive base layer comprises the following components in parts by weight: 23-30 parts of water-based thermoplastic adhesive, 6-12 parts of shading powder, 8-15 parts of fire retardant and 0.05-0.15 parts of waterproofing agent;

[0009] The coating for the ink receiving layer comprises the following components in parts by weight: 8-12 parts of water-based thermoplastic adhesive, 0.5-1.5 parts of anti-ultraviolet finishing agent, 12-17 parts of hot melt powder and 1-3 parts of silicon powder.

[0010] Preferably, the water-based thermoplastic adhesive is a water-based polycarbonate polyurethane emulsion.

[0011] Preferably, the shading powder is titanium dioxide or zinc oxide.

[0012] Preferably, the fire retardant is prepared by compounding antimony trioxide and decabromodiphenylethane in a weight ratio of 1:3.

[0013] Preferably, the waterproofing agent is any one of methylsiloxane, polydimethylsiloxane and sodium methyl silicate.

[0014] Preferably, the anti-ultraviolet finishing agent is any one of benzotriazole compounds, benzophenone compounds, salicylate compounds, triazines and triazole compounds.

[0015] According to another aspect of the present application, a manufacturing process for an outdoor double-spray cloth coated with an ultra-light water-based paint according to any of the above is provided, characterized in that it comprises the following steps:

[0016] (1) 1000D / 192F*1000D / 192F black and white high-strength yarns are mixed and woven at a density of 20*20 to obtain a base fabric layer;

[0017] (2) 23-30 parts of water-based thermoplastic adhesive, 6-12 parts of shading powder, 8-15 parts of fire retardant, and 0.05-0.15 parts of waterproof agent are mixed, and water is added to obtain a waterproof and fireproof adhesive base layer coating with a solid content of 40-60%, which is applied to both sides of the base fabric layer and dried to form a waterproof and fireproof adhesive base layer;

[0018] (3) 8-12 parts of water-based thermoplastic adhesive, 0.5-1.5 parts of anti-ultraviolet finishing agent, 12-17 parts of hot melt powder, and 1-3 parts of silicon powder are mixed, and water is added to obtain a coating for an ink receiving layer with a solid content of 40-60%, which is applied to the side of the waterproof and fireproof adhesive base layer away from the base fabric layer and dried to obtain an outdoor double-sprayed cloth.

[0019] Preferably, in step (2), a waterproof and fireproof adhesive primer with a solid content of 40-60% is coated on both sides of the base fabric layer along the outdoor double spray direction.

[0020] Preferably, it is characterized in that in step (2), the drying temperature is 150-180°C, and the drying time is 1-3 minutes; in step (3), the drying temperature is 150-180°C, and the drying time is 0.7-1.5 minutes.

[0021] Preferably, in step (2), the coating thickness is 150-200 μm, and in step (3), the coating thickness is 75-100 μm.

[0022] The beneficial effects of this application include but are not limited to:

[0023] 1. According to the application, an outdoor double-spray cloth coated with ultra-light water-based paint includes a base cloth layer, a waterproof and fireproof adhesive bottom layer and an ink receiving layer. It has the characteristics of lightness and softness, high hiding power, high tensile strength, PVC-free, waterproof, fireproof, UV-proof, weldable and sprayable, and is particularly suitable for outdoor sunshade, rainproof and storefront building advertising.

[0024] 2. According to the outdoor double-spray cloth coated with ultra-light water-based paint provided in this application, the fiber base cloth is made of 1.1000D / 192F*1000D / 192F black and white high-strength silk, which is mixed at a density of 20*20, so that the fiber base cloth layer has ultra-high tensile strength; the warp yarn is white silk and the weft yarn is black silk, so that the fiber base cloth layer has a higher covering power.

[0025] 3. According to the outdoor double-sprayed cloth coated with ultra-light water-based paint provided by the present application, a water-based thermoplastic adhesive is added to the waterproof and fireproof glue base layer. The water-based thermoplastic adhesive can not only bond the warp and weft yarns to improve the adhesion of the coating, but also maintain the remodelability during the later high-temperature welding, thereby increasing the welding strength between the coatings; the filling of shading powder covers the dot marks of the intersection of black and white silk threads; the addition of fire retardant can have a flame retardant effect on the fabric, and the addition of waterproof agent can achieve the waterproof effect of the spray-painted cloth for outdoor use.

[0026] 4. According to the outdoor double-spray cloth coated with ultra-light water-based paint provided by the present application, in the ink receiving layer, the thermoplastic adhesive and hot melt powder provide reshaping adhesion for the later hot air welding and high-frequency welding, and the two pieces of advertising format are welded together to be infinitely widened, meeting the high requirements for height and width of outdoor large-format advertisements. The addition of anti-ultraviolet finishing agent can absorb high-energy ultraviolet rays and convert them into low-energy, turning them into low-energy heat energy or electromagnetic waves with shorter wavelengths, thereby reducing the harm of ultraviolet rays to textiles and delaying the aging speed of outdoor advertising cloths; silica powder can improve the wear resistance and washing resistance of water-based paint, increase It can enhance the adhesion of coatings and other properties, and silica powder can replace other pigments and fillers in coatings to reduce the cost of coatings. In addition, silica powder has great hardness and mechanical strength. When used as a filler, its wear resistance can be significantly improved. At the same time, silica powder has a strong barrier effect on the penetration of water and other corrosive substances. When using high-quality silica powder, the penetration time of water and other corrosive substances through the coating is prolonged, which is especially suitable for outdoor environments. Silica powder has a small particle size and a large specific surface area. When added to water-based coatings, it provides space for ink to adhere, so that the surface coating can be sprayed. Silica powder also has reinforcing, hydrophilic, thickening, matting, and anti-sticking properties in coatings.

[0027] 5. According to the manufacturing process of an outdoor double-spray cloth coated with ultra-light water-based paint provided in the present application, the paint is simultaneously coated on the front and back sides of the base cloth layer along the cloth running direction, so that the paint can be connected to each other through the high-density meshes between the base cloths when flowing upside down. The mutual penetration of the front and back paints can increase the adhesion between the yarn and the coating during the drying and film-forming process, and can also prevent the mesh leakage and the different coating amounts on the front and back. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific embodiments. It is pointed out that the following embodiments cannot be understood as limiting the scope of protection of the present invention. Simple substitutions or adjustments made by ordinary technicians in the field based on the contents of the present invention are all within the scope of protection of the present invention.

[0029] Unless otherwise specified, the raw materials in the examples of this application were purchased through commercial channels.

[0030] Example 1

[0031] (1) 1000D / 192F*1000D / 192F black and white high-strength yarns are mixed and woven at a density of 20*20, wherein the warp yarn is white yarn and the weft yarn is black yarn, to obtain a base fabric layer;

[0032] (2) 23 parts of water-based polycarbonate polyurethane emulsion, 6 parts of titanium dioxide, 2 parts of antimony trioxide, 6 parts of decabromodiphenylethane, and 0.05 parts of polydimethylsiloxane are mixed, and water is added to obtain a waterproof and fireproof adhesive primer coating with a solid content of 40%, which is simultaneously coated on the front and back sides of the base fabric layer along the outdoor double spray direction, and dried at 150° C. for 3 minutes to form a waterproof and fireproof adhesive primer with a thickness of 150 μm;

[0033] (3) Mix 8 parts of water-based polycarbonate polyurethane emulsion, 0.5 parts of triazine and triazole compounds, 12 parts of hot melt powder, and 1 part of silicon powder, and add water to obtain a coating for an ink receiving layer with a solid content of 40%. Apply the coating to the side of the waterproof and fireproof adhesive base layer away from the base fabric layer with a coating thickness of 75 μm, and dry it at 150°C for 1.5 minutes to obtain an outdoor double-spray cloth.

[0034] Example 2

[0035] (1) 1000D / 192F*1000D / 192F black and white high-strength yarns are mixed and woven at a density of 20*20, wherein the warp yarn is white yarn and the weft yarn is black yarn, to obtain a base fabric layer;

[0036] (2) 26 parts of water-based polycarbonate polyurethane emulsion, 9 parts of titanium dioxide, 3 parts of antimony trioxide, 9 parts of decabromodiphenylethane, and 0.1 parts of methylsiloxane were mixed, and water was added to obtain a waterproof and fireproof adhesive primer coating with a solid content of 50%, which was simultaneously coated on the front and back sides of the base fabric layer along the outdoor double spray direction, and dried at 165° C. for 2 minutes to form a waterproof and fireproof adhesive primer with a thickness of 180 μm;

[0037] (3) 10 parts of water-based polycarbonate polyurethane emulsion, 1 part of benzotriazole compound, 15 parts of hot melt powder, and 2 parts of silicon powder are mixed and water is added to obtain a coating for an ink receiving layer with a solid content of 50%. The coating is applied to the side of the waterproof and fireproof adhesive base layer away from the base fabric layer with a coating thickness of 85 μm, and dried at 160° C. for 1.2 minutes to obtain an outdoor double-sprayed cloth.

[0038] Example 3

[0039] (1) 1000D / 192F*1000D / 192F black and white high-strength yarns are mixed and woven at a density of 20*20, wherein the warp yarn is white yarn and the weft yarn is black yarn, to obtain a base fabric layer;

[0040] (2) 30 parts of water-based polycarbonate polyurethane emulsion, 12 parts of calcium silicate, 5 parts of antimony trioxide, 15 parts of decabromodiphenylethane, and 0.15 parts of sodium methyl silicate were mixed, and water was added to obtain a waterproof and fireproof adhesive primer coating with a solid content of 60%, which was simultaneously coated on the front and back sides of the base fabric layer along the outdoor double spray direction, and dried at 180° C. for 1 minute to form a waterproof and fireproof adhesive primer with a thickness of 200 μm;

[0041] (3) 12 parts of water-based polycarbonate polyurethane emulsion, 1.5 parts of salicylate compounds, 17 parts of hot melt powder, and 3 parts of silicon powder are mixed and water is added to obtain a coating for an ink receiving layer with a solid content of 60%. The coating is applied to the side of the waterproof and fireproof adhesive base layer away from the base fabric layer with a coating thickness of 100 μm, and dried at 180° C. for 0.7 min to obtain an outdoor double-spray cloth.

[0042] Example 4

[0043] (1) 1000D / 192F*1000D / 192F black and white high-strength yarns are mixed and woven at a density of 20*20, wherein the warp yarn is white yarn and the weft yarn is black yarn, to obtain a base fabric layer;

[0044] (2) 28 parts of water-based polycarbonate polyurethane emulsion, 6-12 parts of zinc oxide, 3 parts of antimony trioxide, 9 parts of decabromodiphenylethane, and 0.09 parts of polydimethylsiloxane are mixed, and water is added to obtain a waterproof and fireproof adhesive primer coating with a solid content of 40-60%, which is simultaneously coated on the front and back sides of the base fabric layer along the outdoor double spray direction, and dried at 160° C. for 2.5 minutes to form a waterproof and fireproof adhesive primer with a thickness of 160 μm;

[0045] (3) Mix 9 parts of water-based polycarbonate polyurethane emulsion, 0.9 parts of benzophenone compounds, 16 parts of hot melt powder, and 1 part of silicon powder, and add water to obtain a coating for an ink receiving layer with a solid content of 55%. Apply the coating to the side of the waterproof and fireproof adhesive base layer away from the base fabric layer with a coating thickness of 90 μm, and dry it at 170°C for 1.2 minutes to obtain an outdoor double-spray cloth.

[0046] Comparative Example 1

[0047] The difference from the second embodiment is that the base fabric layer is a mesh woven by warp and weft threads of polypropylene (PP).

[0048] Comparative Example 2

[0049] The difference from Example 2 is that the coating method in step (2) is changed to layer-by-layer coating.

[0050] Comparative Example 3

[0051] The difference from Example 2 is that in step (3), silicon powder is replaced by carbon black powder.

[0052] Comparative Example 4

[0053] The difference from Example 2 is that in step (3), the hot melt powder is replaced by acrylic paint.

[0054] Comparative Example 5

[0055] The difference from Example 2 is that in step (2), the composite flame retardant consisting of 3 parts of antimony trioxide and 9 parts of decabromodiphenylethane is replaced by a hydroxide flame retardant.

[0056] Comparative Example 6

[0057] The difference from Example 2 is that in step (2), the aqueous polycarbonate polyurethane emulsion is replaced by aqueous latex.

[0058] Various performance tests were conducted on Examples 1-4 and Comparative Examples 1-6 according to industry standards or national standards such as water resistance, flame retardancy, transparency, yellowing resistance, and peeling and lamination. The specific results are shown in Table 1.

[0059] Table 1

[0060]

[0061]

[0062] It can be seen from Table 1 that in Examples 1-4, the coating raw materials, the proportions of the coating raw materials and the production process used in Example 2 have multiple performance effects and the best effect, and at the same time, the advertising cloth has the characteristics of high tensile strength, PVC-free, waterproof, fireproof, UV-proof and weldable.

[0063] Compared with Examples 1-4, in Comparative Example 1, the base fabric layer is a mesh woven by warp and weft threads of polypropylene (PP), rather than a 1000D / 192F*1000D / 192F black and white high-strength yarn mixed layer with a density of 20*20, which cannot achieve high covering and high tensile strength of the base fabric woven with industrial-strength black and white yarns.

[0064] Compared with Examples 1-4, Comparative Example 2 changes the coating method and results in light leakage spots. When the coating is coated on the front and back sides of the base fabric layer along the warp and weft directions of the black and white high-strength silk, the coating can be connected to each other through the high-density meshes between the base fabrics when it flows upside down. The mutual penetration of the coatings on the front and back sides can increase the adhesion between the yarn and the coating during the drying and film-forming process, thereby preventing mesh leakage and different coating amounts on the front and back.

[0065] In Comparative Example 3, compared with Examples 1-4, in step (3), the silicon powder is replaced with carbon black powder. Carbon black powder has good wear resistance and anti-skid properties, and can replace silicon powder to improve wear resistance. However, silicon powder can replace other pigments and fillers in the coating to reduce the cost of the coating. Carbon black powder is limited in application scenarios due to its black color. At the same time, silicon powder has a strong barrier effect on the penetration of water and other corrosive substances. When high-quality silicon powder is used, the penetration time of water and other corrosive substances through the coating is prolonged, which is particularly suitable for outdoor environments.

[0066] In Comparative Example 4, compared with Examples 1-4, the hot melt powder in step (3) is replaced by acrylic paint. The hot melt powder is mainly used to enhance the adhesion and durability of the advertising cloth. It can melt at high temperature to form a coating. After curing, the coating can form a firm bond with the surface of the advertising cloth, thereby improving the durability and waterproofness of the advertising cloth. The acrylic paint has good weather resistance and abrasion resistance, and can also improve the color vividness and glossiness of the advertising cloth. However, when the water-based polycarbonate polyurethane emulsion is used in combination with the acrylic paint, it is necessary to use an external adhesive to provide the function of reshaping and bonding. It cannot provide reshaping bonding for the subsequent hot air welding and high-frequency welding like thermoplastic adhesives and hot melt powder. The two pieces of advertising canvas can be welded together to be infinitely widened, meeting the high requirements for height and width of outdoor large-format advertisements.

[0067] In Comparative Example 5, compared with Examples 1-4, the composite flame retardant composed of 3 parts of antimony trioxide and 9 parts of decabromodiphenylethane in step (2) is replaced by a hydroxide flame retardant; the hydroxide flame retardant is mainly aluminum hydroxide and magnesium hydroxide, and its mechanism of action is that a dehydration reaction occurs during combustion, generating a large amount of water vapor, which takes away the heat from the surface of the material; however, the flame retardant efficiency is not high, a large amount of addition is required to increase the cost, and it will affect the mechanical properties of the material.

[0068] In Comparative Example 6, compared with Examples 1-4, the aqueous polycarbonate polyurethane emulsion in step (2) is replaced by aqueous latex; the aqueous polycarbonate polyurethane emulsion has excellent water resistance, oil resistance, chemical resistance and high bonding strength, while the aqueous latex has good plasticity, coating and air permeability, but the bonding strength is not high and cannot meet the requirements of high bonding strength and long service life of the advertising cloth.

[0069] The above is only the embodiment of the present application, and the protection scope of the present application is not limited by these specific embodiments, but is determined by the claims of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the technical ideas and principles of the present application should be included in the protection scope of the present application.

Claims

1. An outdoor double spray cloth coated with ultra-light water-based paint, characterized in that: It comprises a base fabric layer, a waterproof and fireproof adhesive bottom layer and an ink receiving layer, wherein the waterproof and fireproof adhesive bottom layer is coated on two opposite sides of the base fabric layer, specifically, it is coated on both sides of the base fabric layer along the direction of the outdoor double spray cloth; one side of the waterproof and fireproof adhesive bottom layer is coated with the ink receiving layer; The base fabric is made of black and white high-strength silk; The base fabric layer is obtained by mixing 1000D / 192F*1000D / 192F black and white high-strength yarns at a density of 20*20, wherein the warp yarn is white yarn and the weft yarn is black yarn; The coating for waterproof and fireproof adhesive base layer comprises the following components in parts by weight: 23-30 parts of water-based thermoplastic adhesive, 6-12 parts of shading powder, 8-15 parts of fire retardant and 0.05-0.15 parts of waterproofing agent; The ink receiving layer coating comprises the following components in parts by weight: 8-12 parts of water-based thermoplastic adhesive, 0.5-1.5 parts of anti-ultraviolet finishing agent, 12-17 parts of hot melt powder and 1-3 parts of silicon powder; The water-based thermoplastic adhesive is a water-based polycarbonate polyurethane emulsion; The fire retardant is prepared by compounding antimony trioxide and decabromodiphenylethane in a weight ratio of 1:3; the shading powder is titanium dioxide or zinc oxide.

2. The outdoor double spray cloth coated with ultra-light water-based paint as claimed in claim 1, characterized in that: The waterproofing agent is any one of methylsiloxane and sodium methylsilicate.

3. The outdoor double spray cloth coated with ultra-light water-based paint as claimed in claim 1, characterized in that: The anti-ultraviolet finishing agent is any one of benzophenone compounds, salicylate compounds, triazines and triazole compounds.

4. The manufacturing process of the outdoor double spray cloth coated with ultra-light water-based paint as described in any one of claims 1 to 3, characterized in that: The following steps are involved: (1) 1000D / 192F*1000D / 192F black and white high-strength yarns are blended at a density of 20*20, wherein the warp yarn is white yarn and the weft yarn is black yarn, to obtain a base fabric layer; (2) 23-30 parts of water-based thermoplastic adhesive, 6-12 parts of shading powder, 8-15 parts of fire retardant, and 0.05-0.15 parts of waterproof agent are mixed, and water is added to obtain a waterproof and fireproof adhesive base layer coating with a solid content of 40-60%, which is applied to both sides of the base fabric layer and dried to form a waterproof and fireproof adhesive base layer; (3) Mix 8-12 parts of water-based thermoplastic adhesive, 0.5-1.5 parts of anti-ultraviolet finishing agent, 12-17 parts of hot melt powder, and 1-3 parts of silicon powder, and add water to obtain a coating for an ink receiving layer with a solid content of 40-60%, apply the coating to the side of the waterproof and fireproof adhesive base layer away from the base fabric layer, and dry it to obtain an outdoor double-sprayed cloth.

5. The manufacturing process of the outdoor double spray cloth coated with ultra-light water-based paint as claimed in claim 4 is characterized in that: In step (2), the drying temperature is 150-180° C. and the drying time is 1-3 minutes. In step (3), the drying temperature is 150-180° C. and the drying time is 0.7-1.5 minutes.

6. The manufacturing process of the outdoor double spray cloth coated with ultra-light water-based paint as claimed in claim 4 is characterized in that: In step (2), the coating thickness is 150-200 μm, and in step (3), the coating thickness is 75-100 μm.

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