The Bapco closure system is being used by brands from Marks & Spencer (M&S), on pickles, to Tropicana, on its US juice bottles.
"You'll never get a blown container to match perfectly with an injection-moulded cap," explained Bapco sales and marketing director Neil Fowell. "In our case, there is a primary induction weld between the laminate and the underside of the closure." This unit is welded to the neck of the filled container. "You've got a simple operational benefit, without having to check the torque of a closure or the settings for heat seal."
Bapco says the system complements lightweight plastics, such as the RPC jar used by M&S, especially well. It can also be used with thermoformed containers.
Most applications have been in the US, but the firm is now looking to Europe.