We work in any polymer maquila. Cryogenic grinding specialists
There are countless polymers that due to their low density and melting points, grinding with mills at a room temperature is not possible because the friction of the mill itself generates a temperature higher than the melting point of the polymer and therefore the polymer liquefy
With cryogenic grinding we solve this problem. Thus, the pellets enter the mill and before grinding they are crystallized with liquid nitrogen at sub-zero temperatures to facilitate their breakdown and micronization.
Also another advantage of cryogenic grinding is speed: An standard mill usually only reaches 5000rpm (depending on the model). A normal mill that works at more than 5000rpm needs cooling by water, air, special bearings etc. On the other hand, in cryogenic lines it is possible to reach 30,000 rpm with one or two motors, achieving a finer micronization.
On the other hand, a wide variety of thermoplastics do not require cryogenization processes to become powder. Its high melting points allow it to withstand the ambient temperature plus the friction temperature generated by the mill itself.
Depending on the micron size, the pellets turns into powder as the blade mill turns. Together with a sieve, the product is filtered to the desired microns.
Grinding is a very long-lived process whose origins date back to the grinding of agricultural products. In the chemical sector it has been in operation for many years and its techniques are becoming more refined.