How to improve Moisture streaks?

Reason:

Due to the production of some non -melting material layers on the work model, there are separate material layers between plastic parts (maybe water, gas),

Or when plastic enters, it encounters difficulties, so that it cannot completely copy the original surface of the Mold. 

Improvement method:

a) Plastic

.. Check the MFI value of the plastic

.. Check the formula of plastic

.. Meating plastic humidity

b) Mold

.. Is there any leakage of the cooling pipe

.. Poor pattern polishing

C) Injection Molding machine conditions

.. Moimin is too cold

.. Excessive Molding agent

.. Increase the dryness of plastic