When the cold winter comes, the curing speed and viscosity of polyurethane adhesives are more sensitive to the temperature, according to the characteristics of our polyurethane adhesives,We compile a few precautions for use as follows:
If the temperature in your area has dropped to about 5 ℃, or the indoor temperature of the factory has dropped to below 5 ℃ customers, please take a careful look, to avoid unnecessary economic losses due to seasonal changes. Customers in areas where the temperature is above 5℃, please also pay attention to prepare for the sudden drop in temperature in advance.
Please mix the main agent and hardener of polyurethane adhesive according to the fixed proportion, and mix well.
Stock products follow the principle of first-in-first-out, and the use cycle of each batch of polyurethane adhesive should not be too long.
It is recommended that the pressurisation time should not be less than 6 hours, and it should be ensured that the polyurethane adhesive has basically cured before unpressurisation (to avoid the occurrence of open glue phenomenon due to self-stress of the boards).
After unpressurisation, leave the laminated product for at least 1 day before proceeding to the next stage of processing.
When the ambient temperature is lower than 5℃, it is recommended to put it into a warm room or use a heater or a small sun to warm up the glue drum, which can let the glue recover to its original consistency. Do not open the glue drum to ensure that the polyurethane adhesive composition remains consistent.
The colder the weather, the thicker the polyurethane adhesive, it is recommended that you try the performance of the glue before use.
The above is the use of our polyurethane adhesive several precautions, we hope to help you!
Post time: Nov-22-2023