| abstract |
Thermoplastic mixtures are used to make thin plastic films out of them using a blow extruder.n n n Such plastic films can be used for packaging purposes, for example.n n n To prevent the undesirable blocking effect, the thermoplastic mixtures contain powdered synthetic zeolites or zeolite mixtures in an amount of 0.05 to 70% by weight.n n n Zeolite A, zeolite Y, zeolite X, zeolite P or hydroxysodalite can be used as the synthetic powdery zeolite. These synthetic, powdery zeolites are produced by known processes. |