CN114220683B - Preparation process of sound key with invisible aperture effect - Google Patents
Preparation process of sound key with invisible aperture effect Download PDFInfo
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- CN114220683B CN114220683B CN202111276722.6A CN202111276722A CN114220683B CN 114220683 B CN114220683 B CN 114220683B CN 202111276722 A CN202111276722 A CN 202111276722A CN 114220683 B CN114220683 B CN 114220683B
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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
Abstract
The invention relates to the technical field of key processing, in particular to a preparation process of an acoustic 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 key main body; step three, spraying light-transmitting white ink; spraying a layer of black ink; fifthly, carrying out laser engraving to obtain a light-transmitting circular ring; step six, 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 provided by the invention can obtain the sound key which is easy to clean, good in touch sense 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 an acoustic key with an invisible aperture effect.
Background
At present, the common acoustic key in the market is a plastic key, which has the following defects: first, a loud sound is generated when pressed; secondly, the plastic keys are hard in texture and poor in rebound resilience after being pressed, so that gaps exist between the plastic keys and the sound shell, dust is easy to enter, and cleaning is difficult; third, the resonance of plastic and sound affects the sound quality. Therefore, improvement of the audio key is important.
Disclosure of Invention
The invention aims to provide a preparation process of an audio key with an invisible aperture effect, which is easy to clean and good in touch sense and aims to overcome the defects of the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the preparation process of the sound key with the invisible aperture effect comprises the following steps:
firstly, forming a key substrate by utilizing a black silica gel material through one-time oil pressure, and removing burrs;
secondly, performing secondary oil press molding on the key substrate by using a transparent silica gel material, and removing burrs to obtain a key main body;
step three, spraying light-transmitting white ink on the upper surface of the key main body, and vulcanizing and curing to obtain a light-transmitting white ink layer;
spraying a layer of black ink on the transparent white ink layer, polishing, removing burrs, and vulcanizing and curing to obtain a black ink layer;
step five, carrying out laser engraving on the black ink layer close to the edge area of the key main body to form a circular ring shape, and removing the black ink layer in the laser engraving area to obtain a light-transmitting circular ring;
step six, spraying a layer of transparent black ink on the surface of the key main body after laser carving, and vulcanizing and curing to obtain a transparent black ink layer;
step seven, 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 main body printed with the character layer, and vulcanizing and curing to obtain the sound key with the invisible aperture effect.
In the technical proposal, the temperature of the dies for the primary oil pressure forming and the secondary oil pressure forming is 105-125 ℃, the vulcanizing time is 160-170s, and the pressure is 140-160kg/cm 2 。
In the technical scheme, the hardness of the black silica gel material and the transparent silica gel material is 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 technical scheme, in the third, fourth and sixth steps, the vulcanization curing temperature is 170-190 ℃ and the time is 50-70min.
In the technical scheme, in the third step, the thickness of the transparent white ink layer is 22-28 mu m, and the viscosity measured by the viscosity cup is 7.7-9 seconds/bucket.
In the above technical scheme, 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/bucket.
In the above technical scheme, in the step six, the thickness of the transparent black ink layer is 15-21 μm, and the viscosity measured by the 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 technical scheme, in the step seven, the baking temperature is 160-220 ℃ and the baking time is 5-10min.
In the technical scheme, in the step eight, the temperature of vulcanization and curing is 90-110 ℃ and the time is 50-70min.
In the technical scheme, in the step eight, the thickness of the protective ink layer is 22-28 mu m, and the viscosity measured by the viscosity cup is 8-10 seconds/bucket.
The invention has the beneficial effects that:
(1) According to the preparation process of the sound key with the invisible aperture effect, silica gel is used as a raw material, the obtained sound key has small sound when pressed, good touch feeling and rebound resilience, dust is not easy to clean the inside of the sound key, and sound quality is not influenced by resonance with sound.
(2) According to the invention, through the procedures of spraying transparent white ink, spraying black ink, laser carving and spraying transparent black ink, the transparent ring formed in the fifth step can form an aperture effect under illumination; and as the transparent black ink is covered on the ring, the irritation of light to human eyes when the light passes through the ring can be reduced, and the effect of an invisible aperture is achieved; the light-transmitting circular ring is obtained by laser engraving, and the process is simple.
(3) The invention relates to an acoustic key with an invisible aperture effect, which is tested at high temperature: the appearance of the paint is free from discoloration, foaming, deformation, bursting, paint dropping and the like when tested for 72 hours at 85 ℃ in a high-temperature testing machine; and (3) low-temperature test: the appearance of the paint is free from discoloration, foaming, deformation, bursting, paint falling and the like after being tested for 24 hours at the temperature of minus 40 ℃ in a low-temperature testing machine; chemical resistance test: the chemicals are cola or orange juice, hand cream or baby skin-moistening 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, and after the sample is kept at normal temperature for 15 minutes, the sample is checked by erasing the reagent, and the surface of the sample has no obvious change; anti-cleaning test; using a Talbot linear friction instrument, CS-5 friction head, travel 1inch, load 454g, speed 1in/S (30 cyc/Min), test times: 50. 100, 200, 500, 1000, 2000, the paint layer and the printed characters are all free from grinding; abrasion resistance test: the abrasive was Talbo Wearaser CS-10F, a stroke length of 1inch, a speed of 1 inch/second, an applied weight of 260 grams, cycles 10, 20, 50, 100 cycles, paintThe layers and the printed characters are not broken; damage resistance test: the test end is a 7-millimeter tungsten carbide ball, the stroke length is 1inch, the speed is 1 inch/second (30 cyc/Min), the application weight is 1260 g, the test period is 1 (single stroke in one direction), and the surface of the product is not abnormal or damaged; scratch resistance test: a test end of 7 mm tungsten carbide ball, a stroke length of 1inch, a speed of 1 inch/second (30 cyc/Min), an application weight of 260 g, a test period of 1 (single stroke in one direction) and no damage to the paint layer; solar radiation test: blackboard temperature range 63 ℃, in-box temperature 42 ℃, humidity 50% RH, nuclear illuminance 0.35W/m 2 The glass window irradiation period is continuously illuminated (without water spraying) for 240 hours, the natural illumination period is 102 minutes, the light and the water spray are 18 minutes, the test is carried out for 192 hours during the repeated cycle, the appearance is not obviously changed, the measured color value D65/10 degrees is not more than 3, and the delta E is not more than 3; ROHS and halogen-free test: with reference to the X-ray fluorescence spectrometer operating Specification and hexavalent chromium content determination Specification, lead (Pb) is less than or equal to 100ppm, cadmium (Cd) is less than or equal to 5ppm, mercury (Hg) is not allowed, 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 1500ppm; hundred grid test: and (3) drawing a grid (each line needs to be scratched to the surface layer and reaches the base material) of 1mm by using a special cutter (a hundred grid cutter) on the surface of a test article, brushing out surface scraps by using a soft brush, sticking the hundred grid adhesive on the surface of a cut product, discharging bubbles in the adhesive paper cleanly by using an eraser or a finger belly, and instantly stripping the adhesive paper at 180 angles (the thickness is between 2.0mils (50 um) and 5mils (125 um), and the interval between each cutter is 2mm and 6 cutters), wherein the adhesive force is more than or equal to 3B after the adhesive paper is completely adhered on the surface of the product for about 30-90 seconds.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention relates to a preparation process of an acoustic key with an invisible aperture effect, which comprises the following steps:
firstly, forming a key substrate by utilizing a black silica gel material through one-time oil pressure, and removing burrs;
secondly, performing secondary oil press molding on the key substrate by using a transparent silica gel material, and removing burrs to obtain a key main body;
step three, spraying light-transmitting white ink on the upper surface of the key main body, and vulcanizing and curing to obtain a light-transmitting white ink layer;
spraying a layer of black ink on the transparent white ink layer, polishing, removing burrs, and vulcanizing and curing to obtain a black ink layer;
step five, carrying out laser engraving on the black ink layer close to the edge area of the key main body to form a circular ring shape, and removing the black ink layer in the laser engraving area to obtain a light-transmitting circular ring;
step six, spraying a layer of transparent black ink on the surface of the key main body after laser carving, and vulcanizing and curing to obtain a transparent black ink layer;
step seven, 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 main body printed with the character layer, and vulcanizing and curing to obtain the sound key with the invisible aperture effect.
In the invention, the temperature of the mould for the primary oil pressure forming and the secondary oil pressure forming is 105-125 ℃, the vulcanizing time is 160-170s, and the pressure is 140-160kg/cm 2 . 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 influenced when the secondary oil pressure forming 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 transparent silica gel material is 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, the transparent silica gel material is frequently pressed, has smaller hardness and has good touch feeling and rebound resilience.
In the invention, in the third, fourth and sixth steps, the vulcanization and curing temperatures are 170-190 ℃ and the time is 50-70min; in the third step, the thickness of the transparent white ink layer is 22-28 mu m, 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 mu m, and the viscosity measured by a viscosity cup is 7.7-9 seconds per bucket; in the step six, the thickness of the transparent black ink layer is 15-21 mu m, and the viscosity measured by a viscosity cup is 7.7-9 seconds per bucket. And the vulcanization and curing temperatures, time and viscosity of the inks in the third, fourth and sixth steps are the same, so that the improvement of the bonding fastness of the inks in the third, fourth and sixth steps is facilitated.
In the seventh step, the thickness of the character layer is 5-11 μm, the baking temperature is 160-220 ℃ and the time is 5-10min, so as to ensure the firmness of the characters.
In the eighth step, the temperature of vulcanization and curing is 90-110 ℃ and the time is 50-70min; the thickness of the protective ink layer was 22-28 μm and the viscosity measured in a viscosity cup was 8-10 seconds/bucket.
Example 1
The preparation process of the sound key with the invisible aperture effect comprises the following steps:
step one, molding a key substrate by utilizing a black silica gel material with the hardness of 65A at one time in an oil pressure mode, removing burrs, wherein the temperature of a die is 115 ℃, the vulcanization time is 165s, and the pressure is 150kg/cm 2 ；
Step two, performing secondary oil press molding 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/cm 2 ；
Step three, spraying transparent white ink on the upper surface of the key main body, and vulcanizing and curing at 180 ℃ for 60min to obtain a transparent white ink layer with the thickness of 25 mu m and the viscosity of 8.3 seconds/bucket;
spraying a layer of black ink on the transparent white ink layer, polishing to remove burrs, adding sulfur 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 seconds per bucket;
step five, carrying out laser engraving on the black ink layer close to the edge area of the key main body to form a circular ring shape, and removing the black ink layer in the laser engraving area to obtain a light-transmitting circular ring;
step six, spraying a layer of transparent black ink on the surface of the key main body after laser carving, 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 seconds per bucket;
step seven, printing gray ink characters on the central area of the transparent black ink layer, and baking at 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 main body printed with the character layer, vulcanizing and solidifying 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/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, molding a key substrate by utilizing a black silica gel material with the hardness of 70A at one time in an oil pressure way, removing burrs, wherein the temperature of a die is 125 ℃, the vulcanization time is 170s, and the pressure is 160kg/cm 2 ；
Step two, performing secondary oil press molding 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 temperature of a die is 125 ℃, the vulcanization time is 170s, and the pressure is 160kg/cm 2 ；
Step three, spraying transparent white ink on the upper surface of the key main body, and vulcanizing and curing at 190 ℃ for 70min to obtain a transparent white ink layer with the thickness of 28 mu m and the viscosity of 9 seconds per bucket;
spraying a layer of black ink on the transparent white ink layer, polishing to remove burrs, adding sulfur 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;
step five, carrying out laser engraving on the black ink layer close to the edge area of the key main body to form a circular ring shape, and removing the black ink layer in the laser engraving area to obtain a light-transmitting circular ring;
step six, spraying a layer of transparent black ink on the surface of the key main body after laser carving, 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;
step seven, 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 mu m;
and step eight, spraying a layer of protective ink on the surface of the key main body printed with the character layer, vulcanizing and solidifying at 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/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, molding a key substrate by utilizing a black silica gel material with the hardness of 60A at one time in an oil pressure way, removing burrs, wherein the temperature of a die is 105 ℃, the vulcanization time is 160s, and the pressure is 140kg/cm 2 ；
Step two, performing secondary oil press molding 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 temperature of a die is 105 ℃, the vulcanization time is 160s, and the pressure is 140kg/cm 2 ；
Step three, spraying transparent white ink on the upper surface of the key main body, and vulcanizing and curing at 170 ℃ for 50min to obtain a transparent white ink layer with the thickness of 22 mu m and the viscosity of 7.7 seconds/bucket;
spraying a layer of black ink on the transparent white ink layer, polishing to remove burrs, adding sulfur and curing at 170 ℃ for 50min to obtain a black ink layer with the thickness of 37 mu m and the viscosity of 7.7 seconds per bucket;
step five, carrying out laser engraving on the black ink layer close to the edge area of the key main body to form a circular ring shape, and removing the black ink layer in the laser engraving area to obtain a light-transmitting circular ring;
step six, spraying a layer of transparent black ink on the surface of the key main body after laser carving, and vulcanizing and curing at 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;
step seven, 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 mu m;
and step eight, spraying a layer of protective ink on the surface of the key main body printed with the character layer, vulcanizing and solidifying at 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/bucket, so that the sound key with the invisible aperture effect is obtained.
The performance test is carried out on the sound keys with the invisible aperture effect, which are prepared in the embodiments 1-3, and the sound keys have the following effects:
high temperature test: the appearance of the paint is free from discoloration, foaming, deformation, bursting, paint dropping and the like when tested for 72 hours at 85 ℃ in a high-temperature testing machine; and (3) low-temperature test: the appearance of the paint is free from discoloration, foaming, deformation, bursting, paint falling and the like after being tested for 24 hours at the temperature of minus 40 ℃ in a low-temperature testing machine; chemical resistance test: the chemicals are cola or orange juice, hand cream or baby skin-moistening 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, and after the sample is kept at normal temperature for 15 minutes, the sample is checked by erasing the reagent, and the surface of the sample has no obvious change; anti-cleaning test; using a Talbot linear friction instrument, CS-5 friction head, travel 1inch, load 454g, speed 1in/S (30 cyc/Min), test times: 50. 100, 200, 500, 1000, 2000, the paint layer and the printed characters are all free from grinding; abrasion resistance test: the abrasive is Taber Wearaser CS-10F, the stroke length is 1inch, the speed is 1 inch/second, the application weight is 260 grams, the periods are 10, 20, 50 and 100, and the paint layer and the printed characters are not broken; damage resistance test: the test end is a 7-millimeter tungsten carbide ball, the stroke length is 1inch, the speed is 1 inch/second (30 cyc/Min), the application weight is 1260 g, the test period is 1 (single stroke in one direction), and the surface of the product is not abnormal or damaged; scratch resistance test: test end 7 mm carbonTungsten carbide balls with a stroke length of 1inch and a speed of 1 inch/second (30 cyc/Min), an applied weight of 260 g, a test period of 1 (single stroke in one direction), and no damage to the paint layer; solar radiation test: blackboard temperature range 63 ℃, in-box temperature 42 ℃, humidity 50% RH, nuclear illuminance 0.35W/m 2 The glass window irradiation period is continuously illuminated (without water spraying) for 240 hours, the natural illumination period is 102 minutes, the light and the water spray are 18 minutes, the test is carried out for 192 hours during the repeated cycle, the appearance is not obviously changed, the measured color value D65/10 degrees is not more than 3, and the delta E is not more than 3; ROHS and halogen-free test: with reference to the X-ray fluorescence spectrometer operating Specification and hexavalent chromium content determination Specification, lead (Pb) is less than or equal to 100ppm, cadmium (Cd) is less than or equal to 5ppm, mercury (Hg) is not allowed, 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 1500ppm; hundred grid test: and (3) drawing a grid (each line needs to be scratched to the surface layer and reaches the base material) of 1mm by using a special cutter (a hundred grid cutter) on the surface of a test article, brushing out surface scraps by using a soft brush, sticking the hundred grid adhesive on the surface of a cut product, discharging bubbles in the adhesive paper cleanly by using an eraser or a finger belly, and instantly stripping the adhesive paper at 180 angles (the thickness is between 2.0mils (50 um) and 5mils (125 um), and the interval between each cutter is 2mm and 6 cutters), wherein the adhesive force is more than or equal to 3B after the adhesive paper is completely adhered on the surface of the product for about 30-90 seconds.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and although the present invention has been 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 to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. The preparation process of the sound key with the invisible aperture effect is characterized by comprising the following steps of:
firstly, forming a key substrate by utilizing a black silica gel material through one-time oil pressure, and removing burrs;
secondly, performing secondary oil press molding on the key substrate by using a transparent silica gel material, and removing burrs to obtain a key main body;
step three, spraying light-transmitting white ink on the upper surface of the key main body, and vulcanizing and curing to obtain a light-transmitting white ink layer;
spraying a layer of black ink on the transparent white ink layer, polishing, removing burrs, and vulcanizing and curing to obtain a black ink layer;
step five, carrying out laser engraving on the black ink layer close to the edge area of the key main body to form a circular ring shape, and removing the black ink layer in the laser engraving area to obtain a light-transmitting circular ring;
step six, spraying a layer of transparent black ink on the surface of the key main body after laser carving, and vulcanizing and curing to obtain a transparent black ink layer;
step seven, 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 main 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 key with an invisible aperture effect according to claim 1, wherein the process comprises the following steps: the mold temperature of the primary oil pressure molding and the secondary oil pressure molding is 105-125 ℃, the vulcanization time is 160-170s, and the pressure is 140-160kg/cm 2 。
3. The process for preparing an audio key with an invisible aperture effect according to claim 1, wherein the process comprises the following steps: the hardness of the black silica gel material and the transparent silica gel material is 50-70A.
4. A process for preparing an audio key with an invisible aperture effect according to 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 key with an invisible aperture effect according to claim 1, wherein the process comprises the following steps: in the third, fourth and sixth steps, the vulcanization and curing temperatures are 170-190 ℃ and the time is 50-70min.
6. The process for preparing an audio key with an invisible aperture effect according to claim 1, wherein the process comprises the following steps: in the third step, the thickness of the transparent white ink layer is 22-28 mu m, and the viscosity measured by a viscosity cup is 7.7-9 seconds per bucket.
7. The process for preparing an audio key with an invisible aperture effect according to claim 1, wherein the process comprises the following steps: in the fourth step, the thickness of the black ink layer is 37-43 mu m, and the viscosity measured by a viscosity cup is 7.7-9 seconds per bucket.
8. The process for preparing an audio key with an invisible aperture effect according to claim 1, wherein the process comprises the following steps: in the step six, the thickness of the transparent black ink layer is 15-21 mu m, and the viscosity measured by a viscosity cup is 7.7-9 seconds per bucket.
9. The process for preparing an audio key with an invisible aperture effect according to claim 1, wherein the process comprises the following steps: in the seventh step, the thickness of the character layer is 5-11 μm, the baking temperature is 160-220 ℃ and the time is 5-10min.
10. The process for preparing an audio key with an invisible aperture effect according to claim 1, wherein the process comprises the following steps: in the step eight, the temperature of vulcanization and curing is 90-110 ℃ and the time is 50-70min;
the thickness of the protective ink layer was 22-28 μm and the viscosity measured in a viscosity cup was 8-10 seconds/bucket.
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| CN101359541A (en) * | 2007-07-30 | 2009-02-04 | 比亚迪股份有限公司 | Silica-gel push-button and forming method thereof |
| 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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