There are bubbles in the glue during the production of LED soft light strips. The main reasons are that the operation time of the glue is too long, the amount of glue is too large, the stirring method is incorrect, there is no vacuum deaeration or the deaeration time is too short.
1. The glue operation time is too long: the longer the epoxy AB glue or the polyurethane glue is mixed, the viscosity of the glue will become thicker and thicker. When the glue thickens, the air bubbles are difficult to discharge.
Solution: shorten the operation time, (divided into: dispensing time, vacuuming time, parking time, and use time when dispensing glue).
2. The amount of glue mixed with LED strip glue: epoxy resin glue or polyurethane glue under the circumstance of a certain ambient temperature, the larger the amount of glue mixed at one time, the faster the curing speed will be. If the amount of glue is too much, the viscosity of the glue will gradually increase over time, and the glue will be more viscous, and it is relatively difficult to discharge the air bubbles.
Solution: It is recommended that the customer mix a little less glue, and it is more suitable for 200G/200G. If you want to mix more, it is recommended to divide the glue into 2-4 cups after stirring evenly for defoaming and vacuuming (principle: the larger the volume, the faster the curing speed). If it is not divided, the viscosity of the glue will thicken in a short time. After Z, the bubbles are difficult to discharge.
3. The stirring method is incorrect:
Solution, stir clockwise. Because clockwise stirring and counterclockwise stirring are more likely to generate air bubbles.
4. Must be defoamed (vacuum machine), the recommended defoaming time is 6-8 minutes.
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