CN114220683A - Preparation process of sound box key with invisible aperture effect - Google Patents
Preparation process of sound box key with invisible aperture effect Download PDFInfo
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- CN114220683A CN114220683A CN202111276722.6A CN202111276722A CN114220683A CN 114220683 A CN114220683 A CN 114220683A CN 202111276722 A CN202111276722 A CN 202111276722A CN 114220683 A CN114220683 A CN 114220683A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Printing Methods (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to the technical field of key processing, in particular to a preparation process of a sound key with an invisible aperture effect, which comprises the following steps of firstly, forming a key substrate by one-time oil pressure; step two, secondary oil pressure forming of the key body; step three, spraying light-transmitting white ink; spraying a layer of black ink; fifthly, laser etching is carried out to obtain a light-transmitting ring; spraying a layer of transparent black ink; step seven, printing gray ink characters; and step eight, spraying a layer of protective ink. The preparation process can obtain the sound button which is easy to clean, has good touch feeling and has the invisible aperture effect.
Description
Technical Field
The invention relates to the technical field of key processing, in particular to a preparation process of a sound key with an invisible aperture effect.
Background
At present, the common sound key on the market is a plastic key, which has the following defects: firstly, a loud sound is generated when the user presses the button; secondly, the plastic key is hard in texture and poor in rebound resilience after being pressed, so that a gap exists between the plastic key and the sound box shell, dust easily enters the gap, and the plastic key is difficult to clean; third, the resonance between the plastic and the sound affects the sound quality. Therefore, improvements to the audio button are extremely important.
Disclosure of Invention
The invention aims to provide a preparation process of an acoustic button with an invisible diaphragm effect, which is easy to clean and has good touch feeling, aiming at the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the preparation process of the sound key with the invisible aperture effect comprises the following steps:
step one, forming a key substrate by using black silica gel material through one-step oil pressure, and removing burrs;
secondly, carrying out secondary oil pressure forming on the key substrate by using a transparent silica gel material and removing burrs to obtain a key main body;
thirdly, spraying light-transmitting white ink on the upper surface of the key body, and vulcanizing and curing to obtain a light-transmitting white ink layer;
spraying a layer of black ink on the light-transmitting white ink layer, polishing to remove burrs, and vulcanizing and curing to obtain a black ink layer;
fifthly, laser etching a ring shape on the black ink layer close to the edge area of the key main body, and removing the black ink layer in the laser etching area to obtain a light-transmitting ring;
sixthly, spraying a layer of transparent black ink on the surface of the key body subjected to laser etching, and adding sulfur for curing to obtain a transparent black ink layer;
seventhly, printing gray ink characters on the central area of the transparent black ink layer, and baking to obtain a character layer;
and step eight, spraying a layer of protective ink on the surface of the key body printed with the character layer, and vulcanizing and curing to obtain the sound key with the invisible aperture effect.
In the above technical scheme, the temperature of the primary oil pressure forming mold and the secondary oil pressure forming mold is 105-fold-125 ℃, the vulcanizing time is 160-fold-170 s, and the pressure is 140-fold-160 kg/cm2。
In the technical scheme, the hardness of the black silica gel material and the hardness of the transparent silica gel material are both 50-70A.
Preferably, the hardness of the black silica gel material is 60-70A, and the hardness of the transparent silica gel material is 50-60A.
In the above technical scheme, in the third step, the fourth step and the sixth step, the temperature of the vulcanization curing is 190 ℃ and the time is 50-70 min.
In the technical scheme, in the third step, the thickness of the light-transmitting white ink layer is 22-28 μm, and the viscosity measured by a viscosity cup is 7.7-9 seconds per bucket.
In the fourth step, the thickness of the black ink layer is 37-43 μm, and the viscosity measured by the viscosity cup is 7.7-9 seconds per bucket.
In the above technical scheme, in the sixth step, the thickness of the transparent black ink layer is 15-21 μm, and the viscosity measured by a viscosity cup is 7.7-9 seconds per bucket.
In the above technical solution, in the seventh step, the thickness of the character layer is 5-11 μm.
In the above technical scheme, in the seventh step, the baking temperature is 160-220 ℃, and the baking time is 5-10 min.
In the technical scheme, in the step eight, the temperature of the vulcanizing and curing is 90-110 ℃, and the time is 50-70 min.
In the above technical scheme, in the eighth step, the thickness of the protective ink layer is 22-28 μm, and the viscosity measured by the viscosity cup is 8-10 seconds per bucket.
The invention has the beneficial effects that:
(1) according to the preparation process of the sound key with the invisible aperture effect, the silica gel is used as a raw material, the obtained sound key has small sound when pressed, the touch feeling is good, the rebound resilience is good, dust is not easy to enter the sound key, the cleaning is easy, and the tone quality cannot be influenced by the resonance with a sound.
(2) The light-transmitting ring formed in the fifth step can form an aperture effect under illumination through the processes of spraying light-transmitting white ink, spraying black ink, laser etching and spraying transparent black ink; and because the transparent black ink layer is covered on the ring, the stimulation to human eyes when light penetrates through the ring can be reduced, and the effect of invisible light ring is achieved; the light-transmitting ring is obtained through laser etching, and the process is simple.
(3) The invention relates to a sound key with invisible aperture effect,and (3) high-temperature testing: the appearance is free from discoloration, foaming, deformation, cracking, paint dropping and the like when tested for 72 hours at 85 ℃ in a high-temperature testing machine; and (3) low-temperature testing: the appearance is free from discoloration, foaming, deformation, cracking, paint dropping and the like when tested for 24 hours at the temperature of minus 40 ℃ in a low-temperature testing machine; chemical corrosion resistance test: the chemicals are cola or orange juice, hand cream or baby emollient oil, olive oil or edible oil and cleaning agent, the chemicals are respectively absorbed by a dropper and dropped on the surface of the sample, after the sample is kept for 15 minutes at normal temperature, the reagent is erased for inspection, and the surface of the sample has no obvious change; anti-cleaning test; using a Taber Linear abrader, CS-5 abrader head, Stroke 1inch, load 454g, speed 1in/S (30cyc/Min), test times: 50. 100, 200, 500, 1000 and 2000, wherein the paint layer and the printed characters are not worn; and (3) wear resistance test: the grinding material is Taber Wearaser CS-10F, the stroke length is 1inch, the speed is 1 inch/second, the application weight is 260 g, the period is 10, 20, 50 and 100, and neither a paint layer nor a printed character is worn; and (3) a damage resistance test: a 7 mm tungsten carbide ball at the test end, with a stroke length of 1inch, a speed of 1 inch/second (30cyc/Min), an application weight of 1260 grams, a test period of 1 (single stroke in one direction), and abnormal or damaged product surface no function; scratch resistance test: a 7 mm tungsten carbide ball at the test end, a stroke length of 1inch, a speed of 1 inch/second (30cyc/Min), an application weight of 260 grams, a test period of 1 (one direction of single stroke), no damage to the paint layer; and (3) testing solar radiation: the temperature range of the blackboard is 63 ℃, the temperature in the box is 42 ℃, the humidity is 50 percent RH, and the nuclear illumination is 0.35W/m2The color value D65/10 DEG, delta E is less than or equal to 3; ROHS and halogen free test: referring to the operating instruction of X-ray fluorescence spectrometer and the operating instruction of hexavalent chromium content measurement, the content of lead (Pb) is less than or equal to 100ppm, the content of cadmium (Cd) is less than or equal to 5ppm, mercury (Hg) is not allowed, and hexavalent chromium (Cr)6+) Not allowed, Cl is less than or equal to 900ppm, Br is less than or equal to 900ppm, and Cl + Br is less than or equal to 1500 ppm; and (3) testing the grids: using special cutter (hundred grid knife) to cut 1mm x 1mm grid (each line needs to cut surface layer to reach base material), using soft brush to remove surface debris, and using hundred grid adhesive to stick on cut product surfaceThen, the bubbles in the gummed paper are completely discharged by using an eraser or a finger belly, after the gummed paper is completely attached to the surface of the product for about 30-90 seconds, the gummed paper is instantly peeled off at an angle of 180 degrees (the thickness is between 2.0mils (50um) and 5mils (125um), 6 pictures are drawn at the interval of 2mm per knife), and the adhesive force is more than or equal to 3B.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention relates to a preparation process of a sound key with an invisible aperture effect, which comprises the following steps:
step one, forming a key substrate by using black silica gel material through one-step oil pressure, and removing burrs;
secondly, carrying out secondary oil pressure forming on the key substrate by using a transparent silica gel material and removing burrs to obtain a key main body;
thirdly, spraying light-transmitting white ink on the upper surface of the key body, and vulcanizing and curing to obtain a light-transmitting white ink layer;
spraying a layer of black ink on the light-transmitting white ink layer, polishing to remove burrs, and vulcanizing and curing to obtain a black ink layer;
fifthly, laser etching a ring shape on the black ink layer close to the edge area of the key main body, and removing the black ink layer in the laser etching area to obtain a light-transmitting ring;
sixthly, spraying a layer of transparent black ink on the surface of the key body subjected to laser etching, and adding sulfur for curing to obtain a transparent black ink layer;
seventhly, printing gray ink characters on the central area of the transparent black ink layer, and baking to obtain a character layer;
and step eight, spraying a layer of protective ink on the surface of the key body printed with the character layer, and vulcanizing and curing to obtain the sound key with the invisible aperture effect.
In the invention, primary oil pressure forming and secondary oil pressure forming are adoptedThe temperature of the hydraulic forming die is 105-125 ℃, the vulcanizing time is 160-170s, and the pressure is 140-160kg/cm2. The temperature, time and pressure of the primary oil pressure forming and the secondary oil pressure forming are the same, the appearance and performance of the key substrate of the primary oil pressure forming cannot be affected when the secondary oil pressure is carried out, and the key substrate can be well combined with the transparent silica gel material on the upper layer, so that the formed case main body structure is firmer and more stable.
In the invention, the hardness of the black silica gel material and the hardness of the transparent silica gel material are both 50-70A; preferably, the hardness of the black silica gel material is 60-70A, the hardness of the transparent silica gel material is 50-60A, and the hardness of the transparent silica gel material is smaller than that of the black silica gel material. Because the transparent silica gel material is positioned on the upper layer and is pressed frequently, the hardness is low, and the touch feeling and the resilience are good.
In the invention, in the third step, the fourth step and the sixth step, the temperature of the vulcanization curing is 190 ℃ and the time is 50-70 min; in the third step, the thickness of the light-transmitting white ink layer is 22-28 μm, and the viscosity measured by a viscosity cup is 7.7-9 seconds per funnel; in the fourth step, the thickness of the black ink layer is 37-43 μm, and the viscosity measured by a viscosity cup is 7.7-9 seconds per bucket; in the sixth step, the thickness of the transparent black ink layer is 15-21 μm, and the viscosity measured by a viscosity cup is 7.7-9 seconds per bucket. And in the third step, the fourth step and the sixth step, the vulcanization curing temperature, time and viscosity of each layer of printing ink are the same, so that the improvement of the bonding fastness among the layers of printing ink is facilitated.
In the seventh step, the thickness of the character layer is 5-11 μm, the baking temperature is 160-220 ℃, and the baking time is 5-10min, so as to ensure the firmness of the characters.
In the eighth step, the temperature of the vulcanization and solidification is 90-110 ℃, and the time is 50-70 min; the protective ink layer has a thickness of 22-28 μm and a viscosity of 8-10 seconds per bucket as measured by a viscosity cup.
Example 1
The preparation process of the sound key with the invisible aperture effect comprises the following steps:
step one, black silicon with the hardness of 65A is utilizedOne-step oil pressure forming of the key substrate with the rubber material, and removing burrs, wherein the mold temperature is 115 deg.C, the vulcanization time is 165s, and the pressure is 150kg/cm2；
Secondly, carrying out secondary oil pressure forming on the key substrate by using a transparent silica gel material with the hardness of 55A and removing burrs to obtain a key main body, wherein the mold temperature is 115 ℃, the vulcanization time is 165s, and the pressure is 150kg/cm2；
Thirdly, spraying light-transmitting white ink on the upper surface of the key body, and vulcanizing and curing at 180 ℃ for 60min to obtain a light-transmitting white ink layer with the thickness of 25 microns and the viscosity of 8.3 seconds per hopper;
spraying a layer of black ink on the light-transmitting white ink layer, polishing to remove burrs, vulcanizing and curing at 180 ℃ for 60min to obtain a black ink layer with the thickness of 40 mu m and the viscosity of 8.3 s/bucket;
fifthly, laser etching a ring shape on the black ink layer close to the edge area of the key main body, and removing the black ink layer in the laser etching area to obtain a light-transmitting ring;
sixthly, spraying a layer of transparent black ink on the surface of the key body subjected to laser etching, and vulcanizing and curing at 180 ℃ for 60min to obtain a transparent black ink layer with the thickness of 18 mu m and the viscosity of 8.3 s/bucket;
seventhly, printing gray ink characters on the central area of the transparent black ink layer, and baking at the temperature of 190 ℃ for 7min to obtain a character layer with the thickness of 8 mu m;
and step eight, spraying a layer of protective ink on the surface of the key body printed with the character layer, vulcanizing and curing at the temperature of 100 ℃ for 60min, wherein the thickness of the protective ink layer is 25 mu m, and the viscosity measured by a viscosity cup is 9 seconds per bucket, so that the sound key with the invisible aperture effect is obtained.
Example 2
The preparation process of the sound key with the invisible aperture effect comprises the following steps:
step one, forming a key substrate by using black silica gel material with the hardness of 70A through one-time oil pressure, removing burrs, and heating a moldThe temperature is 125 ℃, the vulcanization time is 170s, and the pressure is 160kg/cm2；
Secondly, carrying out secondary oil pressure forming on the key substrate by using a transparent silica gel material with the hardness of 60A and removing burrs to obtain a key main body, wherein the mold temperature is 125 ℃, the vulcanization time is 170s, and the pressure is 160kg/cm2；
Thirdly, spraying light-transmitting white ink on the upper surface of the key body, and vulcanizing and curing at 190 ℃ for 70min to obtain a light-transmitting white ink layer with the thickness of 28 microns and the viscosity of 9 seconds per hopper;
spraying a layer of black ink on the light-transmitting white ink layer, polishing to remove burrs, vulcanizing and curing at 190 ℃ for 70min to obtain a black ink layer with the thickness of 43 mu m and the viscosity of 9 seconds per bucket;
fifthly, laser etching a ring shape on the black ink layer close to the edge area of the key main body, and removing the black ink layer in the laser etching area to obtain a light-transmitting ring;
sixthly, spraying a layer of transparent black ink on the surface of the key body subjected to laser etching, and vulcanizing and curing at 190 ℃ for 70min to obtain a transparent black ink layer with the thickness of 21 mu m and the viscosity of 9 seconds per bucket;
seventhly, printing gray ink characters on the central area of the transparent black ink layer, and baking at 220 ℃ for 10min to obtain a character layer with the thickness of 11 microns;
and step eight, spraying a layer of protective ink on the surface of the key body printed with the character layer, vulcanizing and curing at the temperature of 110 ℃ for 70min, wherein the thickness of the protective ink layer is 28 mu m, and the viscosity measured by a viscosity cup is 10 seconds per bucket, so that the sound key with the invisible aperture effect is obtained.
Example 3
The preparation process of the sound key with the invisible aperture effect comprises the following steps:
step one, forming a key substrate by using black silica gel material with the hardness of 60A in one-step oil pressure mode, removing burrs, controlling the temperature of a mold to be 105 ℃, the vulcanizing time to be 160s and the pressure to be 140kg/cm2；
Secondly, carrying out secondary oil pressure forming on the key substrate by using a transparent silica gel material with the hardness of 50A and removing burrs to obtain a key main body, wherein the mold temperature is 105 ℃, the vulcanization time is 160s, and the pressure is 140kg/cm2；
Thirdly, spraying light-transmitting white ink on the upper surface of the key body, and vulcanizing and curing at the temperature of 170 ℃ for 50min to obtain a light-transmitting white ink layer with the thickness of 22 mu m and the viscosity of 7.7 seconds per hopper;
spraying a layer of black ink on the light-transmitting white ink layer, polishing to remove burrs, vulcanizing and curing at the temperature of 170 ℃ for 50min to obtain a black ink layer with the thickness of 37 mu m and the viscosity of 7.7 s/bucket;
fifthly, laser etching a ring shape on the black ink layer close to the edge area of the key main body, and removing the black ink layer in the laser etching area to obtain a light-transmitting ring;
sixthly, spraying a layer of transparent black ink on the surface of the key body subjected to laser etching, and vulcanizing and curing at the temperature of 170 ℃ for 50min to obtain a transparent black ink layer with the thickness of 15 mu m and the viscosity of 7.7 seconds per bucket;
seventhly, printing gray ink characters on the central area of the transparent black ink layer, and baking at 160 ℃ for 5min to obtain a character layer with the thickness of 5 microns;
and step eight, spraying a layer of protective ink on the surface of the key body printed with the character layer, vulcanizing and curing at the temperature of 90 ℃ for 50min, wherein the thickness of the protective ink layer is 22 mu m, and the viscosity measured by a viscosity cup is 8 seconds per bucket, so that the sound key with the invisible aperture effect is obtained.
The performance tests of the sound keys with the invisible aperture effect prepared in the embodiments 1 to 3 all have the following effects:
and (3) high-temperature testing: the appearance is free from discoloration, foaming, deformation, cracking, paint dropping and the like when tested for 72 hours at 85 ℃ in a high-temperature testing machine; and (3) low-temperature testing: the appearance is free from discoloration, foaming, deformation, cracking, paint dropping and the like when tested for 24 hours at the temperature of minus 40 ℃ in a low-temperature testing machine; chemical corrosion resistance test: the chemicals can be selectedRespectively sucking chemicals by a dropper, dripping the chemicals on the surface of a sample, keeping the sample at normal temperature for 15 minutes, wiping the reagent for inspection, and ensuring that the surface of the sample has no obvious change; anti-cleaning test; using a Taber Linear abrader, CS-5 abrader head, Stroke 1inch, load 454g, speed 1in/S (30cyc/Min), test times: 50. 100, 200, 500, 1000 and 2000, wherein the paint layer and the printed characters are not worn; and (3) wear resistance test: the grinding material is Taber Wearaser CS-10F, the stroke length is 1inch, the speed is 1 inch/second, the application weight is 260 g, the period is 10, 20, 50 and 100, and neither a paint layer nor a printed character is worn; and (3) a damage resistance test: a 7 mm tungsten carbide ball at the test end, with a stroke length of 1inch, a speed of 1 inch/second (30cyc/Min), an application weight of 1260 grams, a test period of 1 (single stroke in one direction), and abnormal or damaged product surface no function; scratch resistance test: a 7 mm tungsten carbide ball at the test end, a stroke length of 1inch, a speed of 1 inch/second (30cyc/Min), an application weight of 260 grams, a test period of 1 (one direction of single stroke), no damage to the paint layer; and (3) testing solar radiation: the temperature range of the blackboard is 63 ℃, the temperature in the box is 42 ℃, the humidity is 50 percent RH, and the nuclear illumination is 0.35W/m2The color value D65/10 DEG, delta E is less than or equal to 3; ROHS and halogen free test: referring to the operating instruction of X-ray fluorescence spectrometer and the operating instruction of hexavalent chromium content measurement, the content of lead (Pb) is less than or equal to 100ppm, the content of cadmium (Cd) is less than or equal to 5ppm, mercury (Hg) is not allowed, and hexavalent chromium (Cr)6+) Not allowed, Cl is less than or equal to 900ppm, Br is less than or equal to 900ppm, and Cl + Br is less than or equal to 1500 ppm; and (3) testing the grids: the surface of a test product is scratched with 1mm by 1mm grids (each line needs to scratch the surface layer to reach the base material) by a special cutter (a hundred-grid knife), surface scraps are removed by a soft brush, then a hundred-grid adhesive is pasted on the surface of a cut product, bubbles in the adhesive tape are completely discharged by an eraser or a finger belly, after the adhesive tape is completely attached to the surface of the product for about 30-90 seconds, the adhesive tape is instantly peeled at an angle of 180 degrees (the thickness is between 2.0mils (50um) and 5mils (125um), 6 knives are drawn at intervals of 2mm per knife), and the adhesive force is more than or equal to 3B.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A preparation technology of a sound key with an invisible aperture effect is characterized by comprising the following steps:
step one, forming a key substrate by using black silica gel material through one-step oil pressure, and removing burrs;
secondly, carrying out secondary oil pressure forming on the key substrate by using a transparent silica gel material and removing burrs to obtain a key main body;
thirdly, spraying light-transmitting white ink on the upper surface of the key body, and vulcanizing and curing to obtain a light-transmitting white ink layer;
spraying a layer of black ink on the light-transmitting white ink layer, polishing to remove burrs, and vulcanizing and curing to obtain a black ink layer;
fifthly, laser etching a ring shape on the black ink layer close to the edge area of the key main body, and removing the black ink layer in the laser etching area to obtain a light-transmitting ring;
sixthly, spraying a layer of transparent black ink on the surface of the key body subjected to laser etching, and adding sulfur for curing to obtain a transparent black ink layer;
seventhly, printing gray ink characters on the central area of the transparent black ink layer, and baking to obtain a character layer;
and step eight, spraying a layer of protective ink on the surface of the key body printed with the character layer, and vulcanizing and curing to obtain the sound key with the invisible aperture effect.
2. The process for preparing an audio button with invisible aperture effect as claimed in claim 1, wherein: the temperatures of the primary oil pressure forming die and the secondary oil pressure forming die are both105 ℃ and 125 ℃, the vulcanization time is 160 ℃ and 170s, and the pressure is 140 ℃ and 160kg/cm2。
3. The process for preparing an audio button with invisible aperture effect as claimed in claim 1, wherein: the hardness of the black silica gel material and the hardness of the transparent silica gel material are both 50-70A.
4. The process for preparing an audio button with invisible aperture effect as claimed in claim 3, wherein: the hardness of the black silica gel material is 60-70A, and the hardness of the transparent silica gel material is 50-60A.
5. The process for preparing an audio button with invisible aperture effect as claimed in claim 1, wherein: in the third step, the fourth step and the sixth step, the temperature of the vulcanization curing is 190 ℃ and the time is 50-70 min.
6. The process for preparing an audio button with invisible aperture effect as claimed in claim 1, wherein: in the third step, the thickness of the light-transmitting white ink layer is 22-28 μm, and the viscosity measured by a viscosity cup is 7.7-9 seconds per funnel.
7. The process for preparing an audio button with invisible aperture effect as claimed in claim 1, wherein: in the fourth step, the thickness of the black ink layer is 37-43 μm, and the viscosity measured by a viscosity cup is 7.7-9 seconds per bucket.
8. The process for preparing an audio button with invisible aperture effect as claimed in claim 1, wherein: in the sixth step, the thickness of the transparent black ink layer is 15-21 μm, and the viscosity measured by a viscosity cup is 7.7-9 seconds per bucket.
9. The process for preparing an audio button with invisible aperture effect as claimed in claim 1, wherein: in the seventh step, the thickness of the character layer is 5-11 μm, the baking temperature is 160-220 ℃, and the baking time is 5-10 min.
10. The process for preparing an audio button with invisible aperture effect as claimed in claim 1, wherein: in the step eight, the temperature of the vulcanizing and curing is 90-110 ℃, and the time is 50-70 min;
the protective ink layer has a thickness of 22-28 μm and a viscosity of 8-10 seconds per bucket as measured by a viscosity cup.
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| CN103035432A (en) * | 2011-10-10 | 2013-04-10 | 靖江市永盛光电科技有限公司 | Processing method for silica gel button conducting layer |
| CN203690164U (en) * | 2013-12-27 | 2014-07-02 | 深圳市巨烽显示科技有限公司 | key structure with light ring |
| CN110164728A (en) * | 2019-05-15 | 2019-08-23 | 兴科电子(东莞)有限公司 | A kind of preparation process of the silica gel push-button with light transmission gradual change dispersion effect |
| CN113555239A (en) * | 2021-07-16 | 2021-10-26 | 浙江摩根智能技术有限公司 | Manufacturing method of panel switch |
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