ExxonMobil Chemical Corp.'s propylene-ethylene copolymer Vistamaxx has been approved by the FDA for soft and hard food packaging. Whether used in films or as modifiers for polypropylene in composites, these metallocene-catalyzed TPEs comply with EU-Directive 2002/72/EC rules for food contact.
Permitted grades include: Vistamaxx 6102, ethylene mass fraction of 16%, MFR 3g/lOmin, Shore A hardness 67; Vistamaxx 6202, ethylene mass fraction 15%, MFR 20g/10min, Shore A hardness 61; Vistamaxx3000 , Ethylene mass fraction is 11%, MFR is 8g/10rain, Shore A hardness is 86.
Due to their good compatibility, these materials can provide stable film sealing properties; have a lower initial heat seal temperature and higher thermal viscosity.
They are also suitable for PP type food containers, kitchens, T: modifications of appliances and toys. Because Vistamaxx resin improves bendability and impact resistance without affecting tensile strength, it can help prevent cracking when used in the above products.
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