Bottle cap made from a material comprising polypropylene, particulate calcium carbonate and additives

摘要

An injection moulded polymeric household bottle cap made of a polypropylene composition comprising: particulate CaCO 3 ; additive; and polypropylene; wherein the polypropylene composition in its solid form and with average wall thickness T has a flexural modulus, measured according to ASTM D790-07, being at least 95% of the flexural modulus measured on a reference polypropylene composition being substantially free of CaCO 3 and having average wall thickness of at least T+10%.