Screen printing circuit board and electronic enthusiasts sign panel method and technical personnel in the electronic product development production one of the most difficult thing is how fast mass produced good quality boards and panels, panel.Due to the external processing in a certain number of requirements, and the price is expensive, fewer outside is not suitable for processing.Therefore, this article introduce yourself to the readers fast batch production of circuit boards, panels, signs method.
A, production materials
1.In section 3 cm x 3 cm of the wood hammer is a 30 cm x 23 cm rectangle box.
2.200 ~ 300 mesh screen
3. Diazo photosensitive glue
4. Laser typing membrane (polyester translucent membrane)
5. Uv lamp (or other light source)
6. Hair dryer
7. Triangle (plastic or stainless steel)
Second, the production of circuit boards
1.In the circuit diagram design software (PROTEL) good design circuit diagram and use laser printer to print on A4 type laser film.
2. Use manual onto the screen in the wooden frame, and then use special nailing machine or glue will screen fixed on the wooden frame.With household cleanser or detergent to wash the oil online again and blow dry.
3. The sensitive glue: using triangle (plastic) or flat brush will not easily shed photosensitive adhesive coating on the screen, evenly scraping move up and down, don't pause in the movement, the sensitive glue evenly coated on the screen.General net frame inside of the screen surface can be coated twice, contact substrates on one side of the screen can be three times, but bear in mind that after each blade coating are used hair dryer drying conjunctiva before coating for the second time.
4. Drying, drying temperature with 30 ~ 40 ℃ advisable, it is best to 30 minutes to dry.Such as high temperature, conjunctival quickly, lead to low temperature photoreceptor prolonged, and developing difficulty.Drying time and temperature on the quality of the plate making has a close relationship, should be strictly controlled.
5. Print: light should use ultraviolet light, 20 w - 40 w tube arrangement spacing is 3 cm, light source from the layout of about 15 cm, sensitive time by light intensity measurement experiment.
6. Development: photographic plate immediately after soaking in warm water for about 2 ~ 3 minutes, developed after soaking in water gun (or use development developer for 20 ~ 30 seconds).
7. The fast dry: after developing flat.With a fan pattern is part of the fast dry, fan and layout are separated by about 20 centimeters advisable.
8. Plate repair: repair plate is one of the process must be carried out, and also is the effective guarantee of product quality, repair, oily version with oily sensitive glue, glue can be censorship.
9. The second photosensitive: a second photosensitive after repair, the purpose is to enhance crosslinking fastness, hardening version of the film, operation method for the first time, time is 12 ~ 15 minutes, the sun for 7 to 10 minutes.
10. Printing: put the cutting good coated copper wire board, online graphics and apply copper plate alignment, with quick dry corrosion pour a little was printed on the screen, and then use triangle on the silk screen scraping, apply on the copper plate below can be like the original graphics.
11. The corrosion: will apply copper corrosion in the ferric chloride solution.
Three, making panels, signs
1. Using a drawing program design good panels, signs, using laser printer to print on A4 type laser film, screen making and circuit board manufacturing method are the same.
2. Printing: PVC board, metal board, adhesive, plastic shell will under the silk screen printing ink (different materials with different ink) a little into the screen, and then use triangle scraping move up and down on screen, you can get the same panel as original graphics, text, sign.
Four, printing
Will figure making circuit boards and panels, tag in a box, printing, printing circuit diagram when will figure panel tag with plastic transparent tape glue, circuit diagram and printing panel will glue on the can, so can a will do at the same time, the circuit diagram and the panel tag electronic fans very easy to use.