![Tablet Presses](https://cdn.ready-market.com.tw/814146f2/Templates/pic/TechnicalReport-048.jpg?v=88e99105)
Understanding Scale Up of The Tablet Compaction -2
Source : Yenchen Technical Process Consultant, Dr. Fred Rowley
Operation The Controls on All Modern Tablet Presses:
4. Adjusting Pre-Compression Upper Punch Entry
- Setting is usually in mm. Also called "Punch Penetration".
- Control usually has a range from 1.5 to 4.0/6.0 mm.
- For drugs and vitamins we recommend not deeper than 2.5mm.
- A deep setting may be necessary to control fine particles from escaping during compression.
- Going deeper also brings an increased risk of tablet capping.
![Punch entry](/Templates/pic/TechnicalReport-049_1.jpg)
Upper Punch Entry Control:
Penetrates Between 1.5 to 5.0mm into the die
But how do we use thing correctly?
![Punch entry at 1.5mm / Punch entry at 3.5mm](/Templates/pic/TechnicalReport-049_2.jpg)
Value indicates where punches will meet.
We recommend an initial setting of 2.0mm
Thickness is still set by moving the lower punch closer/further away from the upper punch.
The Upper Punch Entry Control Takes Many Forms on Different Tablet Presses
![Upper punch entry control](/Templates/pic/TechnicalReport-049_3.jpg)
If you have any technical questions, please contact with Grace Chiang Email:grace.chiang@yenchen.com.tw
Copyright © 2019 YENCHEN MACHINERY CO., LTD. All Rights Reserved.