LABORATORY GRANULATOR

Processors of thermoplastics must carry out melt flow rate tests not only on the raw material, but increasingly also on the comminuted finished product in order to gain insight into the processing. Special requirements are placed on the granulate produced for the tests: 

• The material may only be heated slightly during comminution in order to avoid changes in the characteristic values and to ensure the reproducibility of the test results. 
• In some cases, the sample should only be taken from certain areas of the finished product; for example, in the case of thick-walled PE pipes, only from the inside or outside in order to be able to check uniform weldability. 

As these requirements cannot be met with laboratory mills or similar equipment, the samples are usually comminuted using hand tongs or a knife.  The laboratory granulator model 1665 is an auxiliary device that makes these tasks much easier and safer.