1. The smell of white masterbatch. Some film will have a strange smell after using the white masterbatch, which is absolutely not allowed in the milk film and the film in contact with food. This is mainly because the titanium dioxide in the masterbatch is organic. During the treatment, the coating aids selected are not suitable or the addition amount is too large, or the dispersant selected in the production process of the master batch is problematic, and the white masterbatch grade can be replaced.

  2. The hue selection of white masterbatch. Rutile titanium dioxide has a low reflectance in the violet region. Therefore, the rutile titanium dioxide has a yellowish tint, and the yellowish tint gives the colored product an old-fashioned feeling, and the fineness and layering of the fine printed image are degraded. This is unpopular among many white masterbatch users, but after adding a small amount of fluorescent whitening agent to the titanium dioxide, it can absorb ultraviolet light with a wavelength of 300-400 nm and convert it into blue fluorescence with a wavelength of 400-500 nm. In this way, the white masterbatch can be blue phase, and the white masterbatch user can do this according to his own needs.

  3. The fluidity of the white masterbatch. The fluidity of the white masterbatch can be expressed as the melt index, the value is low, the flow is good, the flow is good, the machineability is low, the machine torque is low, and the power consumption is low. When the user chooses the white masterbatch, in addition to the good fluidity of the masterbatch, it is also necessary to note that the MFI of the masterbatch is suitable for the carrier resin in the factory product. The general principle is that the MI of the masterbatch is higher than that of the carrier resin.