Operation procedure of mold making PU rubber

Mold making PU rubber is supplied in two components and curable at room temperature. We develop a series of mold making PU rubber of hardness from 25A to 60A. The mixing ratio is 1:1 by weight and viscosity is quite low, so this series of mold making PU rubber is easy to use, and suitable to make detailed model.

Here is operation procedure of mold making PU rubber:
  1. Before use, be sure that Part A and B are at room temperature and that all tools are ready. Mixing tools and containers should be clean and made of plastic or metal.
  2. Pre mix the Part B before using. After dispensing suitable amounts of Part A and B into mixing container, mix thoroughly for at least 3 minutes.
  3. Mix thoroughly. Hand mixing with a Poly Paddle is best to avoid mixing air into the rubber.
  4. If mixing large at one time, use a mechanical mixer for 3 minutes followed by carefulness. Then, pour entire quantity into a new, clean mixing container and do it all over again. Although this series of mold making PU rubber is formulated to minimize air bubbles in the cured rubber, vacuum degassing prior to pouring rubber will further reduce entrapped air.

Mold making PU rubber