What precautions should be taken when using a two-roll mill?
A two-roll mill, also known as a plastic press, is mainly used for experimental pressing and color matching tests. Please note the following when pressing tablets:
1. Do not allow the surface of the two rollers of the mill to be scratched by hard objects: Some manufacturers reuse materials, which may contain impurities such as stones and iron filings. These must be thoroughly cleaned to avoid damaging the surface of the rollers. If the roller surface is inadvertently scratched, the pressed sheets will not be smooth and flat, affecting color matching or testing.
2. There are techniques to setting stable temperature: Taking 150 degrees as an example, do not set it to 150 degrees at once. While this will result in rapid heating, the stability will be slower. Start by setting it to 120 degrees, and once the temperature reaches 120 degrees, increase the temperature until it reaches 150 degrees, at which point it will stabilize quickly.
3. Understand the forward, reverse, and emergency stop functions of the two-roll mill, and do not panic in emergencies. When using the mill, pay special attention to safety. In case of any dangerous situation, immediately press the "emergency stop" or "roller reversal" button to stop the machine or reverse the rollers.
4. When the experiment is complete and you are removing the pressed sheet from the two-roll mill, use wooden or bamboo tools to remove the sample. Do not use metal tools to scrape the surface of the rollers to avoid damage. After the sample is made, clean the roller surface with a cotton cloth and apply the appropriate protective oil to facilitate normal use next time. The two rollers of the mill have separate temperature controls. Set the appropriate temperature according to your needs to facilitate the production of convenient, fast, flat, and smooth sheets. The product has a reasonable structural design, and consumables are easy to replace. Buyers can replace them themselves. The machine has forward, reverse, and emergency stop functions to ensure operator safety. This mill should be placed in a well-ventilated and dry place to extend its service life. Be sure to clean the two rollers of the two-roll mill. Generally, clean them with a cotton cloth and then apply machine oil to the surface for protection to facilitate the next use.