The reason and treatment method of the tableting machine : the sticking is the sticking of the fine powder on the surface of the tablet by the punch and the die, which results in not only the surface of the tablet, but also the unevenness of the unevenness. The lettering punch is more prone to sticking. 1. Insufficient amount of lubricant or improper selection and excessive fine powder. Appropriately increase the amount of lubricant or replace with a new lubricant to remove excess fines. 2, engraved, rushed character design is not reasonable. Replace the punch or change the character design accordingly. 3. The moisture content of the particles is too much or the particles are not dry and wet, resulting in sticking. Solution: Control the particle moisture in the range of 2% ~ 3%, strengthen the dry grain inspection. 4, due to the raw material itself (such as with hygroscopicity) caused by sticking. Solution: Add a certain amount of absorbent (such as adding 3% calcium hydrogen phosphate) to avoid sticking. 5. The difference in fineness of the original excipients is large, resulting in uneven mixing or improper mixing time. Solution: The raw and auxiliary materials are crushed and sieved to make the fineness meet the quality requirements of the variety, and the mixing time is mastered and controlled. 6. The adhesive concentration is low or the adhesion is poor due to the quality of the adhesive. The fine powder is too much (more than 10%) and sticks. Solution: The fine powder is sieved with a 40-mesh sieve, regranulated, dried, and granulated, and the whole batch is uniformly mixed and then tableted. 7. The surface of the punch is damaged or the surface finish is reduced. There may also be anti-rust oil or lubricating oil, the surface of the new die is rough or the lettering is too deep and angular. The punch can be wiped clean, replaced with a substandard die or rubbed with a trace of liquid paraffin on the surface of the lettering punch to lubricate the surface. In addition, if the sticking is caused by mechanical heating, check the cause and repair the equipment. 8. The ambient humidity is too high and the humidity is too high. Reduce ambient humidity. 9, the operating room temperature is too high, easy to produce sticky punch. Care should be taken to reduce the operating room temperature.
Carbon black is formed by the accumulation of spherical or chain particles with an average diameter of 5~30nm, and the internal microcrystalline structure with a diameter of 3~500nm, which can react with various free radicals.The proportion of carbon black is 1.8~1.9, the proportion of granular carbon black is 0.35~0.4, and the proportion of powdered carbon black is 0.04~0.08.
Carbon black can increase the tensile strength, hardness, tear resistance, wear resistance and other properties of rubber products, it is mainly used as a rubber reinforcing agent, especially for tires.Carbon black's color is extremely black, covering strength is very strong, also is the ideal black pigment.Used to manufacture tires, rubber tubes, conveyor belts and other rubber products as well as ink, dye, paint and other products.
Carbon Black is mainly applied to various rubber products such as tires,rubber overshoes,cable,seal ring,tape etc.Moreover they can be applied to such relevant industries as plastic manufacture.
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