The viscosity control of pad printing adhesive is a key link to ensure pad printing quality. The viscosity directly affects the fluidity, adhesion and printability of the pad printing gel, which in turn determines the clarity and integrity of the printed pattern.

In order to control the viscosity of pad printing adhesive, we need to comprehensively consider factors such as the ratio of silica gel to silicone oil, the amount of curing agent added, mixing temperature and time. The ratio of silica gel to silicone oil is the main means to adjust the viscosity, the amount of silicone oil is added, the viscosity is reduced, and the glue head becomes soft; Conversely, the viscosity increases and the glue head hardens. The amount of hardener added can also affect viscosity, and too much can lead to an increase in viscosity while speeding up the curing process. Mixing temperature and time also have an impact on viscosity, and should be kept within the appropriate range to ensure that the silica gel and silicone oil are well mixed evenly.

In practice, we need to flexibly adjust these factors according to the size and complexity of the printed pattern and the hardness of the required glue head. Avoid over-diluting the pad printing gel to avoid reducing opacity and color density. At the same time, the original ratio should be maintained so as not to affect the overall performance of the pad printing adhesive. To ensure that the viscosity is always within the right range, a viscometer can be tested periodically and adjusted as needed.

In short, controlling the viscosity of pad printing adhesive requires a comprehensive consideration of a variety of factors and flexible adjustment according to the actual situation. Only by mastering the correct viscosity control method can the quality and effect of pad printing be ensured.

About injection liquid silicone rubber,please check the details: High Strengh Liquid Silicone Rubber IOTA 28-Series
About fluorosilicone rubber,please check the details: Fluoro Silicone Gum (IOTA 110-F series)
About ethyl silicone oil,please check the details: Polyethylsiloxane Fluids IOTA 2056 PES
About leather silicone rubber,please check : IOTA Liquid silicone rubber for silicone leather