It is more reasonable for the tablet press to maintain stock
Tablet press lamination means that two pieces are folded into one piece. Due to factors such as sticking punch or upper punch rolling, the flakes stick to the upper punch. The high part is too low, and the sheet cannot be ejected immediately, and at the same time, the particles are added to the die hole and repeatedly pressed. Rolling into laminates makes the tablet press vulnerable to damage. The problem of sticking and punching should be dealt with and supporting facilities for punches, improving the reliability of cold punching dies, and eliminating common faults in the tablet press. The reason and solution of the loose tablet of the tablet press are as follows: the loose tablet refers to that after the sheet is rolled, the hardness is insufficient, and the surface layer has pits, and it will break when it is gently pressed with fingers. Not enough pressure. Solution: Increase the pressure. As everyone knows, for some special purposes, the pressure is relatively large for large areas, and the pressure requirements meet or exceed the pressure limit of the tablet press, and a tablet press of the corresponding size with a large pressure must be ordered. The stress time is too little and the speed ratio is fast. Correspondingly increase the stress time, increase the prestress tension, and reduce the speed ratio. The length of the upper punch of the multi-punch tablet press is different. Solution: Adjust the punch needle. The flexible punching needle produces loosening. Start tightening. Insufficient particle size of the drug, fibrous or elastic drug or crude oil with many components and uneven mixing. It can be overcome by crushing the drug through a 100-mesh sieve, using a highly viscous adhesive, moderately increasing the pressure of the tablet press, and increasing the raw material oil drug adsorbent for sufficient stirring. Insufficient use of binder or wetting agent or unreasonable selection will make the granular material loose or uneven in particle size, and the sand and fine particles will be layered. It can be overcome by choosing the appropriate binder or increasing the usage amount, improving the granulation process, mixing more soft materials, and mixing granules. The moisture content of the granules is too low, and the granules that are too dry have great ductility. Drugs with carboxyl groups lose more carboxyl groups during the drying process of the granules, making the granules crisp and easy to loosen. Therefore, when granulating, the moisture content of the granules should be controlled according to different types. If the granules are too dry, spray them with appropriate amount of dilute ethyl acetate (50%-60%), stir and press into candies. properties of the drug itself. Although the densely pressed sheet has strength, it cannot withstand impact and vibration. Such as soda flakes, etc. are usually easy to cause loose flakes; the relative density is small, the flowability is poor, and the compressibility is poor, so it is re-granulated. The fluidity of the particles is poor, and the particles filling the holes in the die are uneven. There are relatively large pieces or particles, and debris block the scraper and the material opening, affecting the filling amount. The particles in the hopper are sometimes more and sometimes less. Granules should be added frequently to maintain the total amount in the silo.