PACKAGING MATERIALS AND PACKAGING TRAYS

摘要

A packaging material and a packaging tray (26) formed therefrom, said packaging material consisting of or including a layer of absorbent plastics material having surface perforations or through perforations therein. Said absorbent plastics material will be an expanded polystyrene foam of open or closed cell construction and having a core density of 30 to 150 kg/m<2>. The packaging material may be in the form of a laminate consisting of an upper layer (12) of open cell expanded polystyrene and a lower layer (14) of closed cell expanded polystyrene. The packaging material may be provided with a surface layer of film (18) which is predominantly polystyrene based and which has through perforations therein.