The market of plastic sheet cleaning agent is mixed, and there is no uniform cleaning standard; The surface of plastic bottles is mixed with all kinds of dirt, and the types of oil stains are complex, so tape printing is difficult to remove; High-temperature cleaning can easily lead to yellowing or blackening of plastic sheets and poor gloss. Therefore, the preparation of cleaning agent is difficult.
Step 2: Washing liquid
In this paper, the degreasing power, adhesive removal power and whiteness improvement power of various surfactants on plastic sheets were tested, and finally a complete formula system was prepared with surfactants and additives such as Suractent228S and Suractent8096S. After the drum is cleaned at a high temperature above 80℃ for 20 min, all kinds of dirt such as oil, sand, offset printing, dust, etc. The surface of the plastic sheet can be completely cleaned. In particular, adding Suractent8096S to the formula can significantly improve the whiteness of the cleaned plastic sheet, and the cleaning effect is shown in the following figure.