The reason and treatment method of single stamping die adhesion: adhesive punching refers to the pressing of the tablet, the fine powder on the surface of the tablet is adhered to the punch and the die, resulting in not only uneven one-sided, but also indentation, and the lettering punch is easier to stick.
1. The surface of the punch is damaged or the surface finish is reduced, and there may 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. Replace the die that does not meet the specifications or wipe the surface of the lettering punch with trace liquid paraffin to lubricate the literal. In addition, if the mechanical heating causes sticking, the reason should be checked and the equipment should be repaired.
2. The design of stamping characters is unreasonable. Change the punch or change the character design.
3. High particle water content or uneven dry and wet resulting in sticking. Countermeasures: Control the particle moisture at about 2%~3%, strengthen the dry particle inspection.
4. Insufficient lubricant or improper selection, or too much fine powder. The amount of lubricant should be appropriately increased or a new lubricant should be replaced. Remove excessive fine powder.
5. The fineness difference of raw and auxiliary materials is large, resulting in uneven mixing or improper mixing time. Solution: Pulverize and screen raw and auxiliary materials to make their fineness meet the quality requirements of the variety, while mastering and controlling the mixing time.
6. Due to the low concentration of adhesive or the quality of adhesive, the adhesion is poor and the fine powder is too much (more than 10%). Solution: Use 40 mesh screen to sift out fine powder and re-granulate. Dry. After the whole grain, mix the whole batch evenly, and then press the tablet.
7. Sticking is caused by the raw material itself (such as dampness). Solution: Add a certain amount of absorbent (such as 3% calcium hydrogen phosphate) to avoid sticking.
8. The ambient humidity is too high. Reduce the ambient humidity.
9. The operating room temperature is too high, it is easy to produce sticking. Attention should be paid to reducing the operating room temperature.
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