Multilayer rotational moulding

摘要

Disclosed herein is a multilayer hollow packaging prepared by rotational moulding that comprises: (a) a first layer prepared from a composition comprising from 50 to 100 wt% of a polyethylene (PE) or of a polypropylene (PP) or of a mixture thereof, each being prepared with a Ziegler-Natta or with a metallocene-based catalyst system, and from 50 to 0 wt% of a functionalised polyolefin; (b) a second layer on either side of the first layer prepared from a material that is dissimilar from that of the first layer; (c) optionally a third layer, adjacent to the first layer prepared from a material that is dissimilar from that of the first layer and that is similar to or dissimilar from that of the second layer, wherein the adhesion between the first layer and the one or two other layers is achieved by the first layer composition. A method for preparing these rotomoulded multilayer hollow packaging articles is also disclosed.