Cheaper Filled Polypropylene

Problem

A major appliance company wanted to reduce the cost of one of their main materials, calcium carbonate filled polypropylene (PP). Exercises to make cheaper filled PP had been carried out many times in the past so it was a challenge to improve upon the already heavily optimized material.

Adding more calcium carbonate resulted in problems including higher viscosity, which lowers throughput and a reduction in tensile yield strength because calcium carbonate is a not reinforcing.

cheaper filled polypropylene for household appliances like washing machines

Result

By using the correct additives in the right amounts we were able to add more filler to the polypropylene compound for an estimated saving of over 1 million Euros per year.

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