3_AVS-V2_MCT-UM-internal_EN_07-2019 - 第12页
ASM AVS - U SER M ANUAL P AGE 12 OF 182 2.1.3.1.2 Preparing the glass plat e: NOTICE 2T Use the spray mount glue in stead of dou ble sided gluing foil We recommend "3M Spray Mount 400ml" [03071372-01] instead o…
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Drawing of the glass plate:
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2.1.3.1.2 Preparing the glass plate:
NOTICE
2TUse the spray mount glue instead of double sided gluing foil
We recommend "3M Spray Mount 400ml" [03071372-01] instead of double-sided adhesive sheet to use.
The spray does not wear as fast as the film. When scraping there are substantially fewer streaks.
You can use the drive up to 50 times.
NOTICE
Scraping the components
The components can be gently scraped off after the measurement of the plate.
Several (up to 50) configurations / measurements can thus be performed with a film.
Caution!!
The dot grid (3) is not glued on the film and thus not protected!
When scraping therefore always from the point grid (3) proceed away to push the components not on the
dot grid!
Do not forget, before applying the spray adhesive, to cover the edges of the plate with an ad-
hesive tape (eg: "adhesive tape Tesa 4657 30 mm wide" [00306789-01]), as shown below in the
image.
This is first, not to contaminate the metal frame, which is indeed guided by the PCB and sec-
ondly, in order not to cover the "global fiducials".
Please refer to the so-called. "Stop lines" (see picture on page 14).
Cover the environment below the plate with big paper towels (also newsprint) or films made.
Move the spray at a constant speed, in about 20cm distance from the plate, over the entire
width of the plate.
Start the movement outside of the plate.
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When moving across the plate, the speed must not be reduced and of course, the movement
cannot be stopped.
The spray should be applied evenly and slightly.
Do not apply too much!
Then, remove the adhesive tapes from the borders again.
2.1.3.1.3 Cleaning the glass plate:
To remove the spray adhesive from the plate is best to use the recommended
"3M aerosol cleaners on lime basis" [03071373-01], or “Adhesive remover preset wipes, tub”
[03126751-01] from DEK.
Bring the cleaner evenly on the plate on and leave it min. 3 min. act.
After that you can wipe the soggy spray with cloths.
For further purification use ethanol (alcohol) which should be available in every SMT
manufacturing.
Finally, you can clean the glass plate on both sides with glass cleaner without leaving streaks.
NOTICE
No Ethanol (alcohol) when measuring printers with glue!
Do not use ethanol or other alcohol to clean the plates when measuring screen printers!
The alcohol allows the adhesive to cure in seconds and thus also changes the shape of the adhesive points.