Coating system

摘要

A coating system is provided that includes an undercoat composition that includes a thermoplastic dispersion. In certain preferred embodiments, the coating system is a multi-coat system that includes the undercoat composition and an overcoat composition that includes a thermoplastic dispersion. In one embodiment, the coating system is suitable for use on a food-contact surface of a food or beverage container.

主权项

1. A coated article, comprising:
a twist off cap or lid closure for use in sealing a food or beverage container, comprising: a metal substrate; a multi-coat coating formed from a coating system applied to at least a portion of the metal substrate, the coating system comprising:
an overcoat layer formed from an overcoat composition comprising more than 10 wt-% of a polyester polymer, based on the total nonvolatile weight of the overcoat composition, and thermoplastic halogenated polyolefin polymer particles dispersed in an overcoat carrier; andan undercoat layer formed from an undercoat composition applied to the metal substrate comprising thermoplastic halogenated polyolefin polymer particles dispersed in an undercoat carrier; andwherein the coating system is substantially free of bound BPA; and a closure compound applied to the multi-coat coating.