How to reduce glue bubbles in glue dispensing machine? Operating a glue dispensing machine is a technical job. Controlling the speed and time of glue filling, the amount of glue dispensing machine used, and whether the air is completely exhausted, each dimension is an important thing! KPD Automation Glue dispensing Machine today analyzes the method of operating the glue filling machine to reduce bubbles. Let’s first analyze the main reasons for the generation of bubbles.
- Air enters during stirring, and the air is not completely removed during product injection and the entire curing process. Phenomenon: very small bubbles. Solution:
It is recommended to evacuate the main agent and curing agent through the vacuum system of the double-liquid glue filling machine after mixing them together.
Turning on the heating system of the glue filling machine and preheating the product to be filled will help the air escape.
Cure in a room with low temperature and humidity to allow enough time for the air to escape.
- The reaction of moisture and curing agent produces gas, phenomenon: very large bubbles. Solution:
The following are several possibilities for the reaction of moisture and curing agent
a. The main agent has been used many times, and moisture is mixed in during each stirring process. It may also be because the lid of the package is not closed tightly. To prove the reason, please mix the main agent and curing agent in a dry cup according to the above instructions and put it in an oven (60-80℃) to dry. If bubbles still occur, it means that the main agent has deteriorated at this time, so please do not use it again. b. The encapsulated product contains too much moisture. It is recommended to preheat the product and retest it.
c. The surface of the mixture of the main agent and curing agent reacts with moisture in the surrounding air. If so, please cure it in a dry environment. If the product allows, you can cure it in a heated oven.
d. The liquid main agent and curing agent mixture may have been in contact with other chemicals (such as solvents, stripping agents, varnishes, glues, etc.) before curing. Make sure these substances are removed before the next test
Have you learned the above two main reasons and solutions for the generation of bubbles? If such bubbles appear in the future, you can find a way to solve it yourself. The editor kindly tells you that when purchasing a glue filling machine, please choose the reliable merchant KPD!
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