S Pyatt 1 UV glue dispensing studies on the Dima Dotmaster Glue gap checks.

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Presentation transcript:

S Pyatt 1 UV glue dispensing studies on the Dima Dotmaster Glue gap checks

2 The study involves the testing of 3 UV cure glues. The candidates are: Loctite 3525 Dymax Dymax 3013 Previous tests have shown that all 3 glues are suitable for dispensing on the Dotmaster. Target masses are obtainable using glue dispensing settings used in previous test: Loctite second dispense. Blue 22 gauge needle. 0.6mm needle gap. 1 bar. Dymax second dispense. Red 25 gauge needle. 0.3mm needle gap. 1 bar. Dymax second dispense. Clear 27 gauge needle. 0.2mm needle gap. 1 bar S Pyatt

Glass slidesGlue dots Shims 76 microns Glue dispense test jig Use the dispense test jig as normal on the Dotmaster Dispense dots in situ on Dotmaster Place shims and another glass slide on top (Maybe consider adding a weight on the top of the top glass slide to hold it steady) Use UV lamp to cure glue dots

4 S Pyatt Accurate 5 dot glue patterns are created that match the pattern currently used on the glue stencil.

5 S Pyatt The glass slide with the dispensed dots are placed on the die bonder. 76 micron shims are placed and another glass slide is place on top

6 S Pyatt The glass slide assembly is UV cured

7 S Pyatt Loctite 3525 Slide g9.6326g2.07mg Slide g Slide g9.7950g2.23mg Slide g Slide g9.6348g2.17mg Slide g

8 S Pyatt Loctite 3525

9 S Pyatt Dymax Slide g9.2844g1.96mg Slide g Slide g9.7874g2.13mg Slide g Slide g9.7998g2.16mg Slide g

10 S Pyatt Dymax 6 621

11 S Pyatt Dymax 3013 Slide g9.6404g2.50mg Slide g Slide g9.7610g2.46mg Slide g Slide g9.4776g2.46mg Slide g

12 S Pyatt Dymax 3013