Characteristics of Entry
Material
§Protects
the laminate surface
–Prevents
pressure foot marks
–Prevents
imbedded drilling debris
§Prevents
entry burrs
–Conforms
to laminate surface
–Hard
surface, rigid
–No
surface imperfections
§Maintains
drilled hole accuracy
–Prevents
drill damage
–Prevents
breakage
–Minimizes
wear
–Prevents
contamination
Characteristics of Backup
Material
§Non-abrasive,
non-contaminating drill exit platform.
§Consistently
hard and flat surface to minimize bottom side burring.
§Dissipate
heat and reduce drill wear.
§More
efficient debris evacuation from hole.
§Improve
hole wall quality.
§Increase
productivity by optimizing drilling parameters.
§Improve
yield and create a more cost effective drilling operation.
