The two ends of the time including making the goods must be neatly rolled, more here and less. To suck the material, pour the raw material into a container, and then use the machine tube to suck it into the casting machine. During this process, there are occasional particles or larger solids in the poured container to ensure that the raw material is clean. Prevent the produced stretch wrap film from having other particles on it and causing the product to be unqualified. Instrument color matching The method of using the instrument to match the color of the stretch film is actually a method derived from the visual color matching process. This method uses a photometer and other measuring instruments to replace the functions of the human eye and brain. The trial and error process of the proportion is also carried out by computer simulation, instead of the actual mixing and use of coloring of the plastic, and the operator only measures the reflectivity, which is its standard value, and selects the color matching pigment. In adjusting the concentration of color matching pigments, the conversion value of the measurement system is consistent with the standard. If the operator chooses a reasonable value, the system will output a formula in the form of mass fraction, and then convert the formula to a mass ratio. . Therefore, the better the toughness of the stretched film means the better the quality. Also, if the temperature of the sizing sleeve is controlled below room temperature, it is better to use cooling water for cooling. Puncture resistant. After the aging of the stretch film, the surface generally appears sticky, gradually hardened, brittle, and at the same time it begins to change color, speckle, and there will be some. Once we find this situation, we will change it in time. If the goods are cut neatly and unevenly and shipped as scrap, the two ends must be rolled neatly when making the goods, and the edges must be cut neatly. The more here and the less.