Correct use of defoaming agent in adhesives

Defoamer is a chemical additive used to reduce or eliminate bubbles produced during coating. Here are some guidelines and examples for the proper use of antifoaming agents:

1. Select appropriate defoaming agent: Select appropriate defoaming agent according to application requirements and adhesive type. Different defoaming agents are suitable for different adhesive systems and application conditions.
2. Dosage control: Follow the advice provided by the supplier of defoamer to control the dosage of defoamer. Adding too much dose may affect the performance of the adhesive and lead to undesirable effects.
3. Mix well: Before adding the defoamer to the adhesive, make sure to stir or mix thoroughly so that it is evenly dispersed in the adhesive.
4. Adjust the process parameters: According to the need, it may be necessary to adjust the process parameters such as coating speed, temperature and humidity to help eliminate bubbles.
5. Test and validation: In practical application, test and validation are carried out to determine the best use method of defoamer. Evaluate the coating effect and adjust as needed.
   

Case study: An adhesive manufacturing company encountered a problem with air bubbles in its production process. They decided to introduce an antifoaming agent to solve the problem and did the following:

– Selection of appropriate defoamer: The Company worked with the supplier of the defoamer to select the appropriate defoamer based on the type of adhesive and application requirements. They chose an antifoaming agent that effectively eliminated air bubbles.

– Dosing control: The Company controls the dosing of defoamer according to the advice of the supplier. They conducted a series of tests to gradually determine the optimal dosage of antifoaming agent.

– Even mix: Before adding the defoamer to the adhesive, the Company ensures that it is thoroughly stirred or mixed to ensure that the defoamer is evenly dispersed in the adhesive.

– Adjustment of process parameters: The company has adjusted the coating process parameters, including coating speed and temperature. They found that proper process parameters can help eliminate bubbles and obtain better coating effect.

By introducing an antifoaming agent and taking the above measures, the company has successfully solved the bubble problem and improved the quality and appearance of the adhesive to meet the needs of its customers.