On hot sticky summer days nothing can beat the breeze you feel from a ceiling fan. (Trust me I should know I live in Florida) A ceiling fanâs direction in the summer should be rotating counter clockwise or forward to produce a Wind Chill effect by the downward airflow. The thermostat wonât actually change but the room will seem several degrees cooler due to the wind chill factor.
Reaction injection molding. Reaction injection molding (RIM) is similar to injection molding except thermosetting polymers are used, which requires a curing reaction to occur within the mold. Common items made via RIM include automotive bumpers, air spoilers, and fenders.
Return to top. The process cycle for injection molding is very short, typically between 2 seconds and 2 minutes, and consists of the following four stages: 1  Clamping-Prior to the injection of the material into the mold, the two halves of the mold must first be securely closed by the clamping unit.eturn to top. The process cycle for injection molding is very short, typically between 2 seconds and 2 minutes, and consists of the following four stages: 1  Clamping-Prior to the injection of the material into the mold, the two halves of the mold must first be securely closed by the clamping unit.