Ink, covering material, coating processing method, functional hole avoidance method and use

Abstract

The present application belongs to the field of sensor processing technology. The embodiments of the present application provide an ink, a covering material, a coating processing method, a functional hole avoidance method and use. The ink includes the following raw materials by mass: 20-40 parts of covering pigment, 30-60 parts of connecting material and 20-35 parts of organic diluent; the connecting material includes resin; the covering pigment is a pigment resistant to water, alkali and / or acid. The coating made of the above ink has moderate adhesion and is not easy to fall off. When the coating made of the above ink is used to process an anti-glare coating on a sensor, when the coating formed by the ink is used to cover the functional hole, the coating is not easy to fall off, and the anti-glare coating is not easy to damage when the coating is removed.

Description

Technical Field

[0001] The present application belongs to the field of sensor processing technology, and more specifically, relates to an ink, a covering material, a coating processing method, a functional hole avoidance method and a use thereof. Background Art

[0002] When processing the sensor product with anti-glare film (AG), it is necessary to shield the functional holes of the sensor product, that is, when processing the anti-glare coating, avoid the anti-glare coating covering the functional holes. This is because the anti-glare coating has a certain degree of roughness, and diffuse reflection will occur when light passes through the functional holes covered with the anti-glare coating. The diffuse reflection will cause the light signal to weaken, and even cause the light signal to not be received. Therefore, when processing the anti-glare coating, it is necessary to shield the functional hole area to avoid the anti-glare coating covering the functional hole area. After the anti-glare coating treatment is completed, the shielding of the functional hole area can be removed.

[0003] However, when using high-temperature resistant PET film to cover the functional holes, the coverage accuracy cannot be guaranteed and the small-aperture PET film is prone to film shedding; when using water-based ink to cover the functional holes, the water-based ink dissolves in water and has no shielding effect; when using peelable adhesive materials to cover the functional holes, the materials are prone to shedding during glass cleaning operations before spraying, and the edges are uneven and the jagged edges are obvious; and when using a coating formed by alkali-stripped ink curing to cover the functional holes, it is necessary to use a strong alkali solvent to remove it later, but the anti-glare coating is not resistant to strong alkali, and the anti-glare coating is easily damaged when removing the alkali-stripped ink coating. Summary of the invention

[0004] In order to improve or solve to a certain extent the technical problem in the related art that the coating is easy to fall off when blocking the functional holes or the anti-glare coating is easy to be damaged when the coating is removed, the embodiments of the present application provide an ink, a covering material, a coating processing method, a functional hole avoidance method and use, so that when the coating formed by the ink is used to block the functional holes, the coating is not easy to fall off, and the anti-glare coating is not easy to be damaged when the coating is removed.

[0005] To achieve the above-mentioned objectives, in the first aspect, an embodiment of the present application provides an ink, comprising the following raw materials in proportions by weight: 20-40 parts of a covering pigment, 30-60 parts of a binder and 20-35 parts of an organic diluent; the binder comprises a resin; and the covering pigment is a pigment that is resistant to water, alkali and / or acid at room temperature.

[0006] In some embodiments, the hiding pigment is a pigment that is resistant to water, alkali and / or acid at room temperature; wherein the hiding pigment is one or more of barium sulfate, calcium carbonate, kaolin, titanium dioxide, talc and carbon black.

[0007] In some embodiments, the binder is one or more of epoxy resin, polyester resin and acrylic resin.

[0008] In some embodiments, the organic diluent includes one or more of ketone diluents, ether diluents and ester diluents; wherein the ketone diluent is one or more of ethyl ketone, acetone or isophorone; and / or, the ether diluent is one or more of ethyl ether, butyl ether and ethylene glycol monobutyl ether; and / or, the ester diluent is one or more of ethyl acetate, butyl propionate and propylene glycol methyl ether acetate; and / or, the organic diluent is one or more of isophorone, ethylene glycol monobutyl ether and propylene glycol methyl ether acetate.

[0009] In some embodiments, the following raw materials are also included in parts by weight: 1-10 parts of an auxiliary agent; the auxiliary agent is one or more of dimethyl silicone oil and glycidyloxypropyltrimethylsilane.

[0010] In a second aspect, an embodiment of the present application provides a covering material, including:

[0011] Inks and cleaning agents;

[0012] A wiper for erasing a coating formed by curing ink by baking; the wiper includes an organic solvent for dissolving a covering pigment and a linker.

[0013] In some embodiments, the wiper is one or more of ethanol, isophorone, and acetone.

[0014] In a third aspect, an embodiment of the present application provides a coating processing method, comprising:

[0015] Providing various raw materials of ink; mixing the various raw materials to obtain ink;

[0016] Printing the ink, and obtaining a coating after baking and curing;

[0017] The conditions for baking and curing are: baking at 150-170°C for 6-60 minutes.

[0018] In a fourth aspect, an embodiment of the present application provides a functional hole avoidance method, comprising:

[0019] Providing various raw materials of ink in the covering material; mixing the various raw materials to obtain ink;

[0020] The ink is printed on the peripheral area of ​​the functional hole by a printing molding process, and a coating is obtained after baking and curing; the baking and curing conditions are: baking at 150-170°C for 6-60 minutes;

[0021] When the processing of the area around the functional hole is completed, the coating is wiped off with the wiper in the masking material.

[0022] In a fifth aspect, an embodiment of the present application provides a use of a coating prepared by a covering material or coating processing method in the manufacture of a sensor.

[0023] In the ink provided in the first aspect of the present application, the use of pigments that are resistant to water, alkali and / or acid at room temperature can prevent the erosion of the ink by water, alkali and / or acid cleaning liquid when the functional holes are cleaned before spraying, which may cause the coating formed by the ink to fall off; the resin in the connecting material can effectively wrap the covering pigment particles, so that the covering pigment particles are evenly dispersed, and the ink has good viscosity and fluidity, so that the ink has good adhesion and good solubility with organic wiping solvents; the organic diluent helps to adjust the viscosity and volatility of the ink, so that the adhesion and volatility of the ink can be adjusted to a moderate state. The moderate adhesion of the ink can avoid the situation where the ink viscosity is too high and the adhesion is too strong to be removed, or the ink viscosity is too low and the adhesion is insufficient; the moderate volatility rate helps to control the time for the ink to solidify into a coating within an appropriate range. Based on this, the coating made of the above ink has moderate adhesion and is not easy to fall off.

[0024] In addition, in the above-mentioned ink, since the hiding pigment is wrapped by the resin in the binder, the hiding pigment has an oily surface, and the hiding pigment with an oily surface is diluted by an organic diluent, so that the ink as a whole has good oil solubility; therefore, after the ink is solidified into a coating, an organic wiper can be used to remove it, thereby avoiding damage to the sensor's anti-glare coating by using a strong alkaline substance to remove the coating.

[0025] The covering material provided in the second aspect of the present application adopts a combination of the above-mentioned ink and wiper, which is beneficial to avoid damage to the anti-glare coating of the sensor by using a strong alkaline substance to remove the coating formed by the ink when shielding the functional hole of the sensor.

[0026] The coating processing method provided in the third aspect of the present application uses the above-mentioned ink to form a coating, which has moderate adhesion and can be easily removed by an organic wiper.

[0027] The functional hole avoidance method provided in the fourth aspect of the present application uses a covering material to cover the functional hole, thereby avoiding damage to the sensor's anti-glare coating caused by using a strong alkaline solvent to remove the coating when protecting or avoiding the functional hole.

[0028] The fifth aspect of the present application provides that the use of ink or a coating made of ink in the processing of the sensor helps to effectively shield the functional holes during the processing of the sensor and avoids damage to the anti-glare coating of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 A schematic flow chart of a coating processing method provided in an embodiment of the present application.

[0031] Figure 2 A schematic flow chart of a functional hole avoidance method provided in an embodiment of the present application.

[0032] Figure 3 This is a schematic diagram of the coating formed after the ink of Example 16 in the test example is printed using a screen printing machine.

[0033] Figure 4 Acetone was used to remove Figure 3 Schematic diagram of the effect after coating. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] In a first aspect, an embodiment of the present application provides an ink comprising the following raw materials in parts by weight: 20-40 parts of a covering pigment, 30-60 parts of a binder and 20-35 parts of an organic diluent; the binder comprises a resin; and the covering pigment is a pigment that is resistant to water, alkali and / or acid at room temperature.

[0036] The ink uses 20-40 parts by weight of water-resistant, alkali-resistant and / or acid-resistant covering pigments at room temperature, has good covering ability, and can be thermoset; it can avoid damage to the coating made of the ink by water, acid and alkali; covering pigments of different weights will affect the brightness after molding, the leveling speed and adhesion performance of the ink; further, the ink can use inorganic pigments whose covering pigments are insoluble in water and do not react with water, acid and alkali at room temperature. Thus, the coating made of the ink will not be affected by water, acid or alkali when used and will not play a shielding role. In addition, the use of inorganic pigments as covering pigments has good adhesion and appearance, and the inorganic pigments can be one or more of some red, blue, yellow, white and black pigments. In the exemplary embodiment, the inorganic pigment is selected from one or more of barium sulfate, calcium carbonate, kaolin, barium sulfate, calcium carbonate, kaolin, titanium dioxide, talcum powder and carbon black. The hiding pigment may also be in typical but non-limiting weight amounts of 20 parts, 22 parts, 24 parts, 26 parts, 30 parts, 34 parts, 36 parts, 38 parts, 40 parts, etc.

[0037] Using 30-60 parts by weight of resin as a binder can effectively wrap the hiding pigment particles, so that the hiding pigment can be evenly dispersed, avoid the precipitation of the hiding pigment particles, and regulate the viscosity and fluidity of the above-mentioned ink and facilitate the subsequent removal of the coating made of the ink; different weight parts of the binder will affect the brightness after molding, the leveling speed and adhesion performance of the ink; in some embodiments, the binder can also be 30 parts, 32 parts, 34 parts, 36 parts, 40 parts, 44 parts, 56 parts, 60 parts and other typical but non-limiting weight parts. In the exemplary example, the binder can be one or more of epoxy resin, polyester resin and acrylic resin.

[0038] In some embodiments, the organic diluent includes one or more of ketone diluents, ether diluents and ester diluents; wherein the ketone diluent is one or more of ethyl ketone, acetone or isophorone; and / or, the ether diluent is one or more of ethyl ether, butyl ether and ethylene glycol monobutyl ether; and / or, the ester diluent is one or more of ethyl acetate, butyl propionate and propylene glycol methyl ether acetate; and / or, the organic diluent is one or more of isophorone, ethylene glycol monobutyl ether and propylene glycol methyl ether acetate.

[0039] The use of an organic diluent having a weight ratio of 20-35 parts can adjust the viscosity and drying speed of the above-mentioned ink, and is conducive to the subsequent removal of the coating made of the ink. In some embodiments, one or more of ketones, ethers or esters are used as diluents. The diluent can be 22 parts, 24 parts, 28 parts, 30 parts, 32 parts, 34 parts, 35 parts, etc., which are typical but non-limiting mass parts. In the exemplary embodiment, the ketone diluent can be ethyl ketone, acetone or isophorone. The ether diluent can be ethyl ether, butyl ether, ethylene glycol monobutyl ether, etc. The ester diluent can be ethyl acetate, butyl propionate, propylene glycol methyl ether acetate, etc. In some embodiments, the diluent is one or more of isophorone, ethylene glycol monobutyl ether and propylene glycol methyl ether acetate.

[0040] The ink of the embodiment of the present application uses water-resistant, alkali-resistant and / or acid-resistant pigments to avoid erosion of the ink by water, alkali and / or acid cleaning solutions; the resin can effectively wrap the hiding pigment particles, so that the hiding pigment particles are evenly dispersed and the hiding pigment has an oily surface, thereby making the ink have good adhesion and good solubility in organic wiping solvents; the organic diluent helps to adjust the viscosity and volatility of the ink, so that the adhesion and volatility of the ink can be adjusted to a moderate state, so that the coating made of the ink has moderate adhesion and is not easy to fall off and can be wiped off with an organic solvent. The hiding pigment, the binder and the organic diluent make the ink as a whole have good oil solubility, so that after the ink is solidified into a coating, it can be removed with an organic wiper, thereby avoiding damage to the sensor anti-glare coating when a strong alkaline substance is used to remove the coating.

[0041] In some embodiments, the ink is composed of the following raw materials in parts by weight: 20-40 parts of covering pigment, 30-60 parts of binder, 20-35 parts of diluent and an additive for reducing the surface tension of the ink, preferably 1-10 parts of the additive.

[0042] The purpose of using an additive to reduce the surface tension of the ink having the above characteristics is to reduce the surface tension of the ink and allow the ink to level quickly. It is understandable that if the surface tension of the ink meets the requirements, no additive may be added. The additive may be 1 part, 3 parts, 5 parts, 7 parts, 9 parts, 10 parts, etc., which are typical but not limiting parts by mass; in the exemplary example, the additive may be one or more of dimethyl silicone oil and glycidyloxypropyltrimethylsilane.

[0043] Optionally, the ink is composed of the following raw materials in the following mass fractions: 28-35 parts of hiding pigment, 36-45 parts of epoxy resin, 23-28 parts of isophorone and 3-6 parts of dimethyl silicone oil.

[0044] In some embodiments, the ink is composed of the following raw materials in parts by mass: 30 parts of titanium dioxide, 40 parts of epoxy resin, 25 parts of isophorone and 5 parts of dimethyl silicone oil; the ink is composed of the following raw materials in parts by mass: 25 parts of carbon black, 35 parts of polyester resin, 20 parts of ethylene glycol monobutyl ether and 3 parts of dimethyl silicone oil; the ink is composed of the following raw materials in parts by mass: 32 parts of talc, 38 parts of acrylic resin, 27 parts of propylene glycol methyl ether acetate and 6 parts of glycidoxypropyltrimethylsilane.

[0045] Furthermore, the present invention provides a method for preparing the above-mentioned ink, comprising:

[0046] S1. Providing raw materials for preparing ink;

[0047] S2. Mix all the raw materials to obtain ink.

[0048] The ink product can be obtained by mixing the raw materials uniformly using the above method. Specifically, in some embodiments, the resin is first placed in a container, and the covering pigment powder, diluent and auxiliary agent are added to the container in sequence and mixed and stirred uniformly to obtain the ink.

[0049] In a second aspect, an embodiment of the present application provides a covering material, including:

[0050] The aforementioned inks and wipes;

[0051] A wiper for erasing a coating formed by curing ink by baking; the wiper includes an organic solvent for dissolving a covering pigment and a linker.

[0052] The covering material with the above technical features has an ink for making a coating and a wiper for removing the coating. According to the principle of like dissolves like, the organic solvent in the wiper needs to have the ability to dissolve the covering pigment and the binder in the ink so that the coating can be easily removed. In some embodiments, the wiper includes one or more of ethanol, isophorone, and acetone; preferably, the wiper is acetone.

[0053] The covering material of the embodiment of the present application adopts the combination of the above-mentioned ink and the wiper, which is beneficial for avoiding damage to the anti-glare coating of the sensor by removing the coating formed by the ink with a strong alkaline substance when covering the functional hole of the sensor.

[0054] In a third aspect, the present application provides a coating processing method. Figure 1 A schematic diagram of the coating processing method provided in the embodiment of the present application. Figure 1 As shown, the method includes:

[0055] S101 provides the raw materials of the aforementioned ink;

[0056] S102. Mixing the raw materials to obtain ink;

[0057] S103. Printing the ink using a printing molding process, and obtaining a coating after baking and curing.

[0058] The coating processing method of the embodiment of the present application uses the above-mentioned ink to form a coating, and the coating has moderate adhesion, which can not only meet the adhesion requirements, but also can be easily removed by an organic wiper when removal is required.

[0059] In some embodiments, the curing conditions are as follows: curing at 150-170° C. for 6-60 min. The curing temperature includes but is not limited to 150° C., 153° C., 155° C., 158° C., 160° C., 168° C., or 170° C., and the curing time includes but is not limited to 6 min, 10 min, 15 min, 20 min, 25 min, 32 min, 35 min, 45 min, 50 min, 55 min, or 60 min, etc.

[0060] In a fourth aspect, an embodiment of the present application provides a functional hole avoidance method. Figure 2 A schematic flow chart of a functional hole avoidance method provided in an embodiment of the present application, the method comprising:

[0061] S201 provides the raw materials of the ink in the covering material;

[0062] S202. Mixing the raw materials to obtain ink;

[0063] S203. Printing ink on the peripheral area of ​​the functional hole by a printing molding process, and then baking and curing to obtain a coating;

[0064] S204. After the anti-glare coating is processed on the sensor, the coating is wiped off using a wiper in the masking paint.

[0065] The functional hole avoidance method of the embodiment of the present application uses a covering material to cover the functional hole, thereby avoiding damage to the sensor anti-glare coating caused by using a strong alkaline solvent to remove the coating when protecting or avoiding the functional hole.

[0066] In some embodiments, the curing conditions are as follows: curing at 150-170° C. for 6-60 min. The curing temperature includes but is not limited to 150° C., 153° C., 155° C., 158° C., 160° C., 168° C., or 170° C., and the curing time includes but is not limited to 6 min, 10 min, 15 min, 20 min, 25 min, 32 min, 35 min, 45 min, 50 min, 55 min, or 60 min, etc.

[0067] In a fifth aspect, an embodiment of the present application provides a use of the aforementioned ink or the aforementioned coating or a coating prepared by the aforementioned coating processing method in the manufacture of a sensor.

[0068] The embodiment of the present application uses ink or a coating made of ink in the processing of the sensor, which helps to effectively block the functional holes during sensor processing and avoid damage to the sensor's anti-glare coating. In addition, it is understandable that when processing an anti-fingerprint film and / or an anti-reflection film, when it is necessary to avoid the functional holes, the ink of the embodiment of the present application and the coating made of the ink can also be used to avoid the functional holes.

[0069] See the following examples for details.

[0070] The following describes the embodiments of the present application. The embodiments described below are exemplary and are only used to explain the present application, and should not be construed as limiting the present application. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in this area or the product specifications are used. The reagents or instruments used that do not specify the manufacturer are all conventional products that can be obtained through existing channels.

[0071] Example 1

[0072] This embodiment provides an ink.

[0073] The ink is composed of the following raw materials by weight: 20 g of titanium dioxide, 30 g of epoxy resin, 20 g of isophorone and 1 g of dimethyl silicone oil.

[0074] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0075] Example 2

[0076] This embodiment provides an ink.

[0077] The ink is composed of the following raw materials by weight: 30 g of titanium dioxide, 40 g of epoxy resin, 25 g of isophorone and 6 g of dimethyl silicone oil.

[0078] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0079] Example 3

[0080] This embodiment provides an ink.

[0081] The ink is composed of the following raw materials in grams: 40 g of titanium dioxide, 60 g of epoxy resin, 35 g of isophorone and 10 g of dimethyl silicone oil.

[0082] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0083] Example 4

[0084] This embodiment provides an ink.

[0085] The ink is composed of the following raw materials in grams: 20 g of talc, 30 g of polyester resin, 20 g of ethylene glycol monobutyl ether and 1 g of glycidyloxypropyltrimethylsilane.

[0086] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0087] Example 5

[0088] This embodiment provides an ink.

[0089] The ink is composed of the following raw materials: 30 g of talc, 45 g of polyester resin, 25 g of ethylene glycol monobutyl ether and 5 g of glycidoxypropyltrimethylsilane.

[0090] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0091] Example 6

[0092] This embodiment provides an ink.

[0093] The ink is composed of the following raw materials: 40 g of talc, 60 g of polyester resin, 35 g of ethylene glycol monobutyl ether and 10 g of glycidoxypropyltrimethylsilane.

[0094] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0095] Example 7

[0096] This embodiment provides an ink.

[0097] The ink is composed of the following raw materials: 20 g of carbon black, 30 g of acrylic resin, 20 g of propylene glycol methyl ether acetate and 1 g of dimethyl silicone oil.

[0098] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0099] Example 8

[0100] This embodiment provides an ink.

[0101] The ink is composed of the following raw materials: 26 g of carbon black, 35 g of acrylic resin, 25 g of ethylene glycol monobutyl ether and 6 g of dimethyl silicone oil.

[0102] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0103] Example 9

[0104] This embodiment provides an ink.

[0105] The ink is composed of the following raw materials: 40 g of carbon black, 60 g of acrylic resin, 35 g of ethylene glycol monobutyl ether and 10 g of dimethyl silicone oil.

[0106] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0107] Example 10

[0108] This embodiment provides an ink.

[0109] The ink is composed of the following raw materials: 28 g of titanium dioxide, 36 g of epoxy resin, 23 g of isophorone and 3 g of dimethyl silicone oil.

[0110] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0111] Embodiment 11

[0112] This embodiment provides an ink.

[0113] The ink is composed of the following raw materials: 35 g of titanium dioxide, 45 g of epoxy resin, 28 g of isophorone and 6 g of dimethyl silicone oil.

[0114] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0115] Example 12

[0116] This embodiment provides an ink.

[0117] The ink is composed of the following raw materials: 32 g of titanium dioxide, 50 g of epoxy resin, 30 g of isophorone and 4 g of an auxiliary agent.

[0118] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0119] Embodiment 13

[0120] This embodiment provides an ink.

[0121] The ink is composed of the following raw materials: The ink is composed of the following raw materials: 30 g of titanium dioxide, 40 g of epoxy resin, 25 g of isophorone and 5 g of dimethyl silicone oil;

[0122] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0123] Embodiment 14

[0124] This embodiment provides an ink.

[0125] The ink is composed of the following raw materials: The ink is composed of the following raw materials: 25 g of carbon black, 35 g of polyester resin, 20 g of ethylene glycol monobutyl ether and 3 g of dimethyl silicone oil;

[0126] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0127] Embodiment 15

[0128] This embodiment provides an ink.

[0129] The ink is composed of the following raw materials: the ink is composed of the following raw materials: 32 g of talc, 38 g of acrylic resin, 27 g of propylene glycol methyl ether acetate and 6 g of glycidoxypropyltrimethylsilane.

[0130] The ink preparation method includes: mixing the above raw materials to obtain the ink of this embodiment.

[0131] Example 16

[0132] The present embodiment provides an ink, which is composed of the following raw materials: 30g of titanium dioxide, 40g of epoxy resin, 25g of isophorone and 5g of dimethyl silicone oil; the ink preparation method comprises: taking 40g of epoxy resin and placing it in a container, adding 30g of titanium dioxide powder, 25g of isophorone and 5g of dimethyl silicone oil in sequence, mixing and stirring evenly, and obtaining the ink of the present embodiment.

[0133] Embodiment 17

[0134] This embodiment provides a covering material, which includes ink and a wiper; the ink is the ink of Example 16, and the wiper is ethanol.

[0135] Embodiment 18

[0136] This embodiment provides a covering material, which includes ink and a wiper; the ink is the ink of Example 16, and the wiper is YY-718 screen washing water produced by Chongqing Wansheng Chuandong Chemical Co., Ltd.

[0137] Embodiment 19

[0138] This embodiment provides a covering material, which includes ink and a wiper; the ink is the ink of Example 16, and the wiper uses CCS327 diluent produced by Carpoly Chemical Group Co., Ltd.

[0139] Test Case

[0140] The covering materials of Examples 17-19 were used to carry out adhesion and removal performance tests.

[0141] 1. Adhesion performance test:

[0142] 1.1 The ink of Example 16 was printed using a screen printing machine.

[0143] The printing forming method of the printing machine comprises the following steps:

[0144] a. Printing screen: 300-420 mesh polyester screen;

[0145] b. Mesh design: refer to the functional hole diameter size, screen appearance 0.5-1mm, according to the printing process capabilities and specific requirements.

[0146] c. The main steps of screen printing include:

[0147] 1) Make a fixture that can fix the cover glass according to the product shape;

[0148] 2) Alignment of mesh holes with functional holes;

[0149] 3) Debug the printing parameters to achieve better printing effects. After the machine is adjusted, ink printing is performed. The printing parameters of the optimized screen printing machine are shown in Table 1 below.

[0150] Table 1

[0151] Scrape glue hardness Printing speed Scraping angle Grid distance 70-80 Shore 100-200mm / s 70-80° 4-6mm

[0152] 4) Baking and curing under different curing conditions to obtain coatings made by using the inks of Examples 16 to 19 under different curing conditions.

[0153] 1.2 The coatings prepared by using the ink of Example 16 in 1.1 under different curing conditions were subjected to a 100-grid test:

[0154] The conditions and steps of the Baige test are as follows:

[0155] 1) Nikkei blade, blade thickness: 0.43±0.03mm, fixed with a blade holder;

[0156] 2) Hold the knife holder at an angle of 30-45° to the test area surface, and draw a 1mm*1mm grid on the ink surface. After completion, use a brush to clean the grid test area in a direction parallel to the test edge.

[0157] 3) Use a piece of 3M681 tape with a length of not less than 40mm to stick it in the center of the two groups of scratches. Use your fingers to push the tape to ensure that the tape is tightly bonded to the coating surface without bubbles. After standing for 90±30 seconds, peel off the tape from the end closest to the tester and tear it off in a 180° direction as much as possible.

[0158] 4) Check the peeling condition of the coatings made of the inks of Examples 16-19 under different curing conditions, see Table 3, and the judgment criteria are shown in Table 2 below.

[0159] Table 2

[0160]

[0161] Table 3

[0162]

[0163] Note: The ink that meets 1B-2B has moderate adhesion. The coating made of ink that meets 3B and above in the Baige test has too high adhesion and is not easy to remove.

[0164] As shown in Table 3, under the ink baking conditions, the ink was baked for 3 minutes, the ink was not solidified, and the ink fell off during the plate cleaning; after baking for 6 minutes, the adhesion could reach 1B, the plate cleaning agent ink did not fall off, and the solvent was easy to remove; after baking for 10 minutes or more, the ink material itself was completely solidified, and the adhesion could reach the 2B requirement by relying on the material itself, and the adhesion would not be improved as the baking time was prolonged, the plate cleaning agent ink did not fall off, and the solvent was easy to remove. It can be seen that the coatings made of the inks of Examples 16-19 meet the requirements of 1B-2B, have moderate adhesion, are easy to remove, and can meet the plate cleaning operation before functional hole spraying.

[0165] 2. Remove performance test:

[0166] A substrate was provided, and the ink obtained in Example 16 was baked at 150°C for 60 minutes to prepare a coating on the surface of the substrate. The wiping agents (alcohol, YY-718 screen washing water, CCS327 diluent and acetone) provided in Table 4 were used for wiping treatment, and the removal performance of the coating made of the ink obtained in Example 16 was tested. The results are shown in Table 4 below. From the results in Table 4, alcohol, YY-718 screen washing water, CCS327 diluent and acetone can all remove the coating formed by the ink of Example 16; from the difficulty of the wiping process in Table 4, acetone is easier to remove the coating formed by the ink of Example 16 than alcohol, YY-718 screen washing water and CCS327 diluent.

[0167] Table 4

[0168]

[0169] See also Figure 3 and Figure 4 As shown, the coating printed by the screen printing machine is neat and without sawtooth, which realizes the requirement of avoiding hollowing out the functional holes during spraying. For the printing effect, please refer to Figure 3 As shown. Figure 3 Wiping the coating with acetone can effectively remove the covering ink, and the hole appearance is neat. For the removal effect, refer to Figure 4 shown.

[0170] Depend on Figure 3 , Figure 4 As shown in Table 4, acetone has the highest wiping efficiency and the best effect. Therefore, in the embodiment of the present application, acetone is preferably used as a wiping agent for removing the coating, and other types of solvents can also be selected.

[0171] In summary, the ink of the embodiment of the present application forms a coating by using a combination of covering pigments, connecting materials and diluents to achieve the shielding of functional holes when the sensor is processed with an anti-glare coating; the coating formed by the ink under the baking conditions of 150°C and 30 minutes can meet the requirements of 2B, and its adhesion performance is moderate, and there is no shedding; the coating formed by the ink under the baking conditions of 150°C and 60 minutes can be removed by wiping agents such as alcohol, YY-718 screen washing water, CCS327 diluent and acetone, and the wiping effect with acetone is the highest and the best. In addition, alcohol, YY-718 screen washing water, CCS327 diluent and acetone are all non-strong alkaline organic solvents, so using the organic solvent to wipe the coating will not damage the anti-glare coating when the sensor is processed with the anti-glare coating.

[0172] Therefore, when the coating formed by the ink is used to shield the functional holes in the embodiment of the present application, its adhesion performance is moderate, and the coating is not easy to fall off, and the anti-glare coating is not easy to be damaged when removing the coating.

[0173] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An ink, characterized in that: Including the following raw materials by mass: 20-40 parts of hiding pigment, 30-60 parts of binder and 20-35 parts of organic diluent; The connecting material includes resin; The hiding pigment is a pigment that is resistant to water, alkali and / or acid at room temperature.

2. The ink according to claim 1, characterized in that: The hiding pigment is selected from inorganic pigments; wherein the hiding pigment is one or more of barium sulfate, calcium carbonate, kaolin, titanium dioxide, talc and carbon black.

3. The ink according to claim 1, characterized in that: The connecting material is one or more of epoxy resin, polyester resin and acrylic resin.

4. The ink according to claim 1, characterized in that: The organic diluent includes one or more of ketone diluents, ether diluents and ester diluents; wherein the ketone diluent is one or more of ethyl ketone, acetone or isophorone; and / or the ether diluent is one or more of ethyl ether, butyl ether and ethylene glycol monobutyl ether; and / or the ester diluent is one or more of ethyl acetate, butyl propionate and propylene glycol methyl ether acetate; and / or the organic diluent is one or more of isophorone, ethylene glycol monobutyl ether and propylene glycol methyl ether acetate.

5. The ink according to claim 1 or 2, characterized in that: The invention also includes the following raw materials in parts by weight: 1-10 parts of an auxiliary agent; and / or the auxiliary agent is one or more of dimethyl silicone oil and glycidyloxypropyltrimethylsilane.

6. A covering material, characterized in that: include: The ink and the wiper as claimed in any one of claims 1 to 5; The wiper is used to wipe off the coating formed by baking and curing the ink; the wiper includes an organic solvent for dissolving the hiding pigment and the connecting material.

7. The covering material according to claim 6, characterized in that: The cleaning agent is one or more of ethanol, isophorone and acetone.

8. A coating processing method, characterized in that: include: Providing raw materials of the ink according to any one of claims 1 to 5; Mixing the raw materials to obtain the ink; Printing the ink, and obtaining the coating after baking and curing; The baking and curing conditions are: baking at 150-170° C. for 6-60 minutes.

9. A functional hole avoidance method, characterized in that: include: Providing raw materials of the ink in the covering material as claimed in any one of claims 6 to 7; Mixing the raw materials to obtain the ink; The ink is printed on the peripheral area of ​​the functional hole by a printing molding process, and a coating is obtained after baking and curing; the baking and curing conditions are: baking at 150-170° C. for 6-60 minutes; When the processing of the peripheral area of ​​the functional hole is completed, the coating is wiped off using the wiper in the covering material according to any one of claims 6 to 7.

10. Use of the covering material according to any one of claims 6 to 7 or the coating prepared by the coating processing method according to claim 8 in manufacturing a sensor.

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