Packaging material and packaging containers produced therefrom

摘要

A packaging material is disclosed for producing dimensionally stable, liquid-tight packaging containers for liquid foods. The packaging material (10) has a core layer (11) of thermoplastic and filler admixed into the thermoplastic in a quantity of between 30 and 70% of the total weight of the packaging material. The thermoplastic in the core layer (11) consists of a mixture of a first thermoplastic which may be a propylene homopolymer or an ethylene/propylene copolymer, and a second thermoplastic which is a polyethylene. The quantity of said polyethylene is between 5 and 50% of the total thermoplastic quantity of the core layer. From a web or a sheet of the packaging material, dimensionally stable, liquid-filled packaging containers can be produced by fold forming and heat sealing in a conventional manner. Such packaging containers can also be produced using other conventional techniques such as blow moulding and thermoforming.