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tappered
Why? Can u explain
yes tappered dies prevent capping by allowing escape of air during compression.
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Can you explain what is Bakelite relief in tablet tooling ?
Bakelite relief means tips of lower punches are made sharp. As we know Lower punch travels the full length inside the die In case the blend has low melting point than it will adhere to the walls of dies and as the punch enters inside die again and again the temperature will go on increasing and
sticking will occur
Lower punches will damage
Dies will damage from inside
So ,to overcome the problem lower punches are manufactured with Sharp tips termed as Bakelite relief as the punches come up in the dies these sharp tips will remove any adhered material on the die wall . Thereby preventing the punches and Dies from damage as well as product quality .
I am little confused here. Sir you said for hardness of tablet lower punch play vital role. But isn’t the upper punch applied the pressure here? lower punch lift the granules?
lower punch in the sence that uper roll/wheel is fix and lower wheel is movable.
if we want to increase hardness lower wheel lift the lower punches