Purging Standard LLDPE blend with other PE

To transition from LLDPE to a material with similar os lower MI PEs(ie.,higher viscosity PEs),
the expected purge time should be 10-20minutes or less.
Once the product run is over,remove the LLDPE blend from the chute of the extruder's hopper,and
thoroughly clean the hopper to ensure that all the material is gone.
If the new PE material has much less viscosity(much higher MI) than the exsiting LLDPE,
then a LDPE with an intermediate MI is recommended as an additional step.