About pressing of tablets

• The answer to the questionHow to distinguish the tablets from briquettes?Square pills, oval pills, round tablets, salt, carbon tablets, a logo, a tablet for washing machines - which are tablets and briquettes is that already. Dimensions and shape of the tablets.

1. Clients often confused about the concepts and terminology regarding the name of the pressed powder products. Accepted conventional pharmaceutical tablets having a diameter of 4 to 25 mm call Tablets. Irregularly shaped products - square, rectangular, measuring 30 mm or more - briquettes. But for us, as professionals in the field of compaction, it's a tablet.
2. Usual classical compressed into tablets and mechanical rotary tablet presses. A briquette can be compressed in small and large hydraulic presses, as well as in mechanical single punch eccentric press. But the easiest way to find a description of the model, if introduced into the Internet search engines - Tablet press and indicate tablet diameter in mm. Such as tablet press tablet 30 mm.
3. According to its specificity tablets and briquettes in the center of the most durable, and the edges are less robust. Just stronger tablets to the ends and the middle of the least durable. Molds squeezing the top and bottom of the powder, thereby the powder is compacted at the edges to the middle. Mid tablet bad propressovannaya most part. It is therefore always the thickness of the tablet should not exceed 30-40% of the diameter. In all other cases, you need to have a reserve power press to push the powder from edge to edge, having firmly impaction mid tablet.
4. The thicker the tablet or briquette, the more effort is required for removing the finished tablet from the die. Sometimes the force of compression of the powder is higher than the pressure of the finished tablet ejection force and such a tablet is not possible (or difficult) to remove from the matrix. In such cases it is necessary to examine the structure of the tablet press and predict the future situation. If you encounter a situation when the tablet comes out of the matrix with a scratch, you need to add powdered calcium stearate or magnesium stearate.
5. Specificity of pressing individual powders implies an experienced advisor who can help you solve your problem optimally. Here is a simple example. Client needs to be pressed tablet acid salt of a diameter of 40 mm and a height of 20mm. Available cheaper models do not allow for mechanically strong tablets by direct compression of salt. The question arose about the purchase of a more powerful and expensive tablet press, but after consultation with the client we used the following scheme - pressing salt carried on the budget press. The tablets obtained had a final strength and molded only with a small force. Next, these tablets were put on the night in a room with a humidifier, within 8-9 hours tablet absorbs moisture from the air and cemented themselves to a very strong condition. The result - a savings, tablet press is not working at maximum effort, and will serve more durable than if it was used at 100% of maximum effort.
6. Funds to pay for services and advice of experienced people in their field always shorten the correct decision. Learn from the mistakes of others and experience professionals. Ask for advice.

To all the questions related with production of tablets you can find answers on resource www.Tabletpress.ru