First, the selection of materials is very important. The main raw materials of ink pad are various natural mineral pigments, vegetable oil, and binders, etc. In the selection of materials, the producer needs to carefully select high-quality materials to ensure the quality of the ink pad. For example, pigments need to be selected from bright and non-fading mineral raw materials; vegetable oil needs to be selected from seed oil rich in oil and pure in texture.
Second, grinding is a key step in the production process. The producer needs to mix and grind the pigment and oil thoroughly to make the ink oil uniform and fine, and the color bright. At the same time, appropriate amount of binder and other additives should be added to adjust the thickness and viscosity of the ink pad. Third, the proportion of mixing needs to be appropriate. The master of proportion is crucial for the quality of ink pad. The producer needs to adjust the proportion of various raw materials reasonably according to different raw materials and purposes. For example, too much oil will make the ink pad too thin and affect the use effect; too much binder will make the ink pad too viscous, which is not conducive to the uniform coloring of the seal. Therefore, the producer needs to try and adjust many times to find the best mixing ratio. Fourth, stirring and drying. Stirring is the key step to make each component of the ink pad fully mixed. The producer needs to stir the mixed raw materials thoroughly to ensure the uniformity and stability of the ink pad. Then, place the ink pad in a well-ventilated area to dry and cure. The time and degree of drying will also affect the use effect of the ink pad, so it needs reasonable control by the producer according to the weather and raw material conditions. Fifth, there are some precautions in production. First, keep the production environment clean to prevent impurities from mixing into the ink pad. Second, pay attention to fire control and safety during production to avoid accidents caused by improper operation. Third, the storage of ink pad also needs to avoid direct sunlight and damp environment to prolong its service life. In conclusion, these are some little knowledge about the process of making ink pad. In the process of making ink pad, producers need to operate with patience and
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