A buyer holds two quotations: one for a low-pressure foaming machine, one for a high-pressure model. Both suppliers promise precise metering and uniform mixing....

A low-pressure polyurethane foaming machine is often treated as a smaller, cheaper alternative to a high-pressure line, but that framing misses the point. The...

Two RIM parts from the same mold can look identical on the outside and fail for completely different reasons on the inside. One was...

Most RIM cells do not fail because the mixing head is undersized. They fail because the metering unit, mold carrier, temperature-control loop, and data...

Long fiber injection with polyurethane looks simple in a video and becomes difficult on the plant floor. A chopper cuts glass roving, a mixing...

Conventional RTM works. It produces large, fairly complex composite parts without the cost of prepreg and autoclave processing. The problem is cycle time and...

The acronyms look similar, but the plant-level difference is not naming—it is where the reinforcement enters the process and what the metering, mixing, mold,...

Most continuous slabstock projects do not go wrong at the metering pump. They go wrong when the building cannot supply stable power, dry compressed...

Density variation on a continuous polyurethane foam line rarely announces itself as a single dramatic event. More often, it shows up as two blocks...

The Control Point Is the Machine, Not Just the Recipe Most slabstock plants define a target density and hardness for every grade. The harder...