This page contains a Flash digital edition of a book.
58 TABLETING


per punch face. Tis number can however be increased depending on the design of a particular dosage. Almost all presses can accommodate multi-tip tooling, but any press being planned for multi-tip production must be in good working order with no significant wear in the turret area, including punch guides, keyways and die pockets. Te cams should also be replaced if there are signs of excessive wear or degradation, to prevent damage to the punch heads. Consideration should be


given to the compatibility of the press with multi-tips. Te upper turret must have a keyway in the guide to ensure alignment with the tooling. Although the lower turret guide does not require a keyway because the tip remains captive in the die, a keyway on the lower turret is recommended when using a higher number of tips, as it helps in the setting process and avoids damage to the lower tips. Attention should be given to the feeder paddles as they may have to be modified to ensure the amount of formulation is correct for die filling. Also, look at the tablet ejection system, as it has to receive larger production volumes. Te setting of multi-tip tooling is the same as the setting of shaped punches. You should use a fitting tool to ensure that the dies are in the correct alignment and that the guides and die pockets are not out of position or worn. Care must be taken when fitting the tools to the press to avoid causing damage to the tip edges, as this will cause other problems to arise during compression.


What other factors should you consider? It is important to look at the formulation being compressed when using multi tips as it must have the correct characteristics to work successfully.


www.scientistlive.com


A three-tip punch from I Holland


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76