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PET paint can is a first

Kalon Decorative Products of Birstall, England, is believed to be the first to offer oil-based paints in a one-piece polyethylene terephthalate lever-lid container.

Pw 17954 Paint

The term “lever lid” refers to the fact that the lid, a separate piece, can be pried off with a screwdriver using the rim as a lever.

Light, dent-resistant and rust-proof, plastic paint cans have been widely available in the United Kingdom for some time. Until now, they’ve been injection molded of polypropylene in two pieces: an open-topped can body with a separate rim spin-welded on to accept the lid.

Why a separate rim? Because permitting the lid to fit tightly requires an undercut that would be difficult to eject from the core of the injection mold tool.

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