CN105632827A - Preparation method of keyboard type membrane switch - Google Patents
Preparation method of keyboard type membrane switch Download PDFInfo
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- CN105632827A CN105632827A CN201410598324.XA CN201410598324A CN105632827A CN 105632827 A CN105632827 A CN 105632827A CN 201410598324 A CN201410598324 A CN 201410598324A CN 105632827 A CN105632827 A CN 105632827A
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Abstract
A preparation method of a keyboard type membrane switch belongs to the preparation field of an electronic component. A polyester silk screen printing plate is fixed to a silk screen printing machine, a conductive sliver paste is printed on a PET film through a scraper plate, and then curing is performed; after the curing, a layer of insulation oil ink is printed on a silver slurry line through the polyester screen printing plate, and then curing is completed through an ultraviolet light channel; a layer of conductive carbon slurry is printed on the externally connected conductive sliver slurry line; and the PET film is cut according to the profile of the membrane switch using a laser cutting machine or a die, and, finally, an upper layer, a middle layer and a lower layer of films are assembled and laminated using a waterproof mucilage glue. Through improvement for production process, rapid production is achieved, production efficiency is improved, and the finished product color difference caused by a hot wind interference when baking oven thermocuring is performed is prevented. The preparation method of the keyboard type membrane switch has the advantages of simple operation and easy popularization.
Description
Technical field
The invention belongs to the preparation field of electronic component, the preparation method particularly relating to a kind of keyboard-type thin film switch.
Background technology
Along with the continuous progress of science and technology, the prescription for electronic product also strengthens day by day, and therefore the requirement for electronic devices and components preparation technology is also more and more higher, along with the use for new material new process that puts into of new product is also increasing. Keyboard-type thin film switch is because having simple in construction, good looking appearance is smooth, finished product is frivolous, good sealing effect, touch the features such as connected and long service life, overcome conventional keyboard switch cannot the problems such as waterproof and dustproof and internal circuit be oxidizable, be widely used in computer, space flight and aviation, communication, industrial equipment and office equipment etc. Conventional fabrication processes often uses heat curing-type dielectric ink, causes the qualification rate that there is aberration in entire block and affect product; And it being generally adopted by chip production process, production efficiency is low.
Summary of the invention
Present invention seek to address that the problems referred to above, it is provided that the preparation method of a kind of keyboard-type thin film switch.
A kind of preparation method of keyboard-type thin film switch, it is characterized in that comprising the steps: that (1) is by 44 ��m of (305 orders, polyester screen mesh printing plate 120T) is fixed on screen process press, by scraper plate, conductive silver paste is printed in the PET film that 0.075mm thickness sided corona treatment is crossed, is then placed within the curing oven 30min of 100 DEG C; (2), after conductive silver slurry layer solidifies, 106 ��m are selected
The polyester half tone of (152 orders, 60T) is without one layer of light curable type dielectric ink of printing on the silver slurry circuit of contact, and the ultraviolet light passage crossing UV exposure machine completes to solidify; (3) printing one layer of conductive carbon paste on the conductive silver paste circuit connected outside, polyester half tone selects 106 ��m (152 orders, 60T), and 80 DEG C solidify 30min; (4) with laser cutting machine or mould, PET film is cut out by the profile of thin film switch, and intermediate layer 0.1mm thickness PET film is also cut away in the part of corresponding upper and lower point cantact, finally, with waterproof adhesive, upper strata, centre and lower floor's PET three-layer thin-film are assembled laminating.
The preparation method of a kind of keyboard-type thin film switch of the present invention, it is characterised in that it is 0.3 ~ 0.4MPa that described step (1) and step (2) and step (3) middle scraper are applied to the pressure of half tone.
The preparation method of a kind of keyboard-type thin film switch of the present invention, it is characterised in that the speed that described step (1) and step (2) and step (3) middle scraper printing move is 0.2 ~ 0.3m/s.
The preparation method of a kind of keyboard-type thin film switch of the present invention, it is characterised in that described scraper plate and horizontal angle are 45 �� ~ 60 ��.
The preparation method of a kind of keyboard-type thin film switch of the present invention, by the improvement to production technology, achieve quick production, improve production efficiency, hot blast when avoiding baking oven heat cure disturbs the finished product aberration caused, the preparation method of keyboard-type thin film switch of the present invention is simple to operate, it is easy to promote the use of.
Detailed description of the invention
A kind of preparation method of keyboard-type thin film switch, comprise the steps: that (1) is by 44 ��m of (305 orders, polyester screen mesh printing plate 120T) is fixed on screen process press, by scraper plate, conductive silver paste is printed in the PET film that 0.075mm thickness sided corona treatment is crossed, is then placed within the curing oven 30min of 100 DEG C; Under PET film room temperature, chemical stability is better, and gas and vapor permeability is low, but the structure of PET film is without polarized group, surface free energy is relatively low, after sided corona treatment, much trickle depression is got on PET film surface, thus improving the adhesion of PET film and ink. The electric conductivity of conductive silver paste is good, and solidification temperature is low, and technological operation is simple. Its resistance and the size of Argent grain, content are relevant, but are not that the content more high resistance of Argent grain is more little. According to seepage theory, along with Argent grain increasing containing soft-shelled turtle in silver is starched, system resistance value also reduces therewith, when reaching minima and seepage flow threshold values when resistance, continues to increase the content of Argent grain, and its resistance value increases on the contrary. The conductive silver paste used is low temperature curing type. (2) after conductive silver slurry layer solidifies, selecting the polyester half tone of 106 ��m (152 orders, 60T) without one layer of light curable type dielectric ink of printing on the silver slurry circuit of contact, the ultraviolet light passage crossing UV exposure machine completes to solidify; Dielectric ink, the welding resistance green oil namely often claimed, select light-cured type, only need to irradiate through ultra-violet lamp after printing and just can complete solidification process. The conductive carrier of conductive carbon paste is graphite and carbon black, it is difficult to react with the material in air, it is effectively guaranteed reliability and the ruggedness of thin film switch, and due to the antiwear characteristics of graphite in conductive carbon paste, conductive carbon paste on conductive silver paste surface printing, it is possible to increase the anti-wear performance of outer connection line; (3) printing one layer of conductive carbon paste on the conductive silver paste circuit connected outside, polyester half tone selects 106 ��m (152 orders, 60T), and 80 DEG C solidify 30min; (4) with laser cutting machine or mould, PET film is cut out by the profile of thin film switch, and intermediate layer 0.1mm thickness PET film is also cut away in the part of corresponding upper and lower point cantact, finally, with waterproof adhesive, upper strata, centre and lower floor's PET three-layer thin-film are assembled laminating.
It is 0.3 ~ 0.4MPa that the preparation method of a kind of keyboard-type thin film switch of the present invention, described step (1) and step (2) and step (3) middle scraper are applied to the pressure of half tone. The speed that described step (1) and step (2) and step (3) middle scraper printing move is 0.2 ~ 0.3m/s. Described scraper plate and horizontal angle are 45 �� ~ 60 ��.
Claims (4)
1. the preparation method of a keyboard-type thin film switch, it is characterized in that comprising the steps: that (1) is by 44 ��m of (305 orders, polyester screen mesh printing plate 120T) is fixed on screen process press, by scraper plate, conductive silver paste is printed in the PET film that 0.075mm thickness sided corona treatment is crossed, is then placed within the curing oven 30min of 100 DEG C; (2), after conductive silver slurry layer solidifies, 106 ��m are selected
The polyester half tone of (152 orders, 60T) is without one layer of light curable type dielectric ink of printing on the silver slurry circuit of contact, and the ultraviolet light passage crossing UV exposure machine completes to solidify; (3) printing one layer of conductive carbon paste on the conductive silver paste circuit connected outside, polyester half tone selects 106 ��m (152 orders, 60T), and 80 DEG C solidify 30min; (4) with laser cutting machine or mould, PET film is cut out by the profile of thin film switch, and intermediate layer 0.1mm thickness PET film is also cut away in the part of corresponding upper and lower point cantact, finally, with waterproof adhesive, upper strata, centre and lower floor's PET three-layer thin-film are assembled laminating.
2. the preparation method of a kind of keyboard-type thin film switch as claimed in claim 1, it is characterised in that it is 0.3 ~ 0.4MPa that described step (1) and step (2) and step (3) middle scraper are applied to the pressure of half tone.
3. the preparation method of a kind of keyboard-type thin film switch as claimed in claim 1, it is characterised in that the speed that described step (1) and step (2) and step (3) middle scraper printing move is 0.2 ~ 0.3m/s.
4. the preparation method of a kind of keyboard-type thin film switch as described in claim 1 or 3, it is characterised in that described scraper plate and horizontal angle are 45 �� ~ 60 ��.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410598324.XA CN105632827A (en) | 2014-10-31 | 2014-10-31 | Preparation method of keyboard type membrane switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410598324.XA CN105632827A (en) | 2014-10-31 | 2014-10-31 | Preparation method of keyboard type membrane switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105632827A true CN105632827A (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410598324.XA Pending CN105632827A (en) | 2014-10-31 | 2014-10-31 | Preparation method of keyboard type membrane switch |
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| CN (1) | CN105632827A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107027240A (en) * | 2017-05-09 | 2017-08-08 | 东莞福哥电子有限公司 | A kind of high resistance carbon film wiring board and its manufacture method |
| CN110544595A (en) * | 2019-09-07 | 2019-12-06 | 厦门铭彩电子科技有限公司 | Anti-static membrane switch and manufacturing method thereof |
| CN110780543A (en) * | 2019-10-31 | 2020-02-11 | 昆山良品丝印器材有限公司 | Manufacturing process method of solar cell printing screen |
| CN111584286A (en) * | 2020-04-30 | 2020-08-25 | 天津翔龙电子有限公司 | Method for manufacturing nano particle film switch |
| CN113948328A (en) * | 2021-10-20 | 2022-01-18 | 郑州启晨装潢包装科技有限责任公司 | Thin film switch and preparation method thereof |
-
2014
- 2014-10-31 CN CN201410598324.XA patent/CN105632827A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107027240A (en) * | 2017-05-09 | 2017-08-08 | 东莞福哥电子有限公司 | A kind of high resistance carbon film wiring board and its manufacture method |
| CN110544595A (en) * | 2019-09-07 | 2019-12-06 | 厦门铭彩电子科技有限公司 | Anti-static membrane switch and manufacturing method thereof |
| CN110544595B (en) * | 2019-09-07 | 2024-02-27 | 厦门铭彩电子科技有限公司 | Antistatic membrane switch and manufacturing method thereof |
| CN110780543A (en) * | 2019-10-31 | 2020-02-11 | 昆山良品丝印器材有限公司 | Manufacturing process method of solar cell printing screen |
| CN111584286A (en) * | 2020-04-30 | 2020-08-25 | 天津翔龙电子有限公司 | Method for manufacturing nano particle film switch |
| CN113948328A (en) * | 2021-10-20 | 2022-01-18 | 郑州启晨装潢包装科技有限责任公司 | Thin film switch and preparation method thereof |
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Application publication date: 20160601 |