Application

ACRONAL A 240 na is used in the manufacture of self-adhesive labels, films and tapes. Due to excellent plasticizer resistance, it is particularly recommended for coating plasticized PVC film. However, since the effect of plasticizers on pressure-sensitive adhesives depends on the type and quantity of the plasticizers in the film, thorough trials, particularly storage trials, must be carried out before starting production of such articles.

Processing

If ACRONALA 240 na is to be mixed with another dispersion, the pH should be adjusted to the slightly alkaline range. Note that the viscosity increases when the pH is raised.

Adhesives based on ACRONAL A 240 na can be applied to the carrier material with the usual coating systems; e. g., mayer rod, reverse roll, reverse gravure, vario gravure, slot die and curtain applicators. In the event of poor wetting, it is often helpful to add about 0.5% of a wetting agent such as Lumiten I-SC.

We recommend adding a preservative to adhesives and coating materials that contain ACRONAL A 240 na to protect them from microbial attack, particularly if their pH lies in the neutral range. The suitability of such additives must be verified and monitored in trials.