This sheet of IEC 60819-3 specifies requirements for four types of unfilled aramid papers:
Type 1: calendered paper;
Type 2: calendered paper, with improved tearing resistance and conformability;
Type 3: uncalendered paper;
Type 4: calendered paper, with lower density for laminating.
Materials which conform to this specification meet established levels of performance.
However, the selection of material by a user for a specific application should be based on the
actual requirements necessary for adequate performance in that application and not based on
this specification alone.
SAFETY WARNING: It is the responsibility of the user of the methods contained or referred to
in this document to ensure that they are used in a safe manner.