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US 9,309,031 B2Granted
Bottle cap made from a material comprising polypropylene, particulate calcium carbonate and additives
AssigneeThe Procter & Gamble Company
InventorsGrant Robert Meadows, Joe Huesman, Huberto Miel Dalisay
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Abstract
An injection molded polymeric household bottle cap made of a polypropylene composition comprising: particulate CaCO3; 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 CaCO3 and having average wall thickness of at least T+10%.
Claims16
An injection moulded polymeric household bottle cap made of a polypropylene composition comprising:
- about 10% particulate CaCO3 by total weight of the composition;
- from about 0% to about 6% additive by total weight of the composition;
- and
- polypropylene;
- wherein the polypropylene composition in its solid form and with average wall thickness T has a flexural modulus being at least about 95% of the flexural modulus measured on a reference polypropylene composition substantially free of CaCO3 and having average wall thickness of at least about T+10%;
- and
- wherein the bottle cap has an average wall thickness from 0.5 mm to 10 mm;
- and
- wherein the polypropylene composition is recyclable.
6 more elements
Dependencies are inferred from the claim text.