Photo: Shrink wrapped jam jars

Shrink wrapped Hartley jam jars. Photo caption: Bexthene S shrinkable polythene is employed for group packaging Hartley's jam. 12 oz jars, on a specially shaped tray vacuum formed from Bextrene polystyrene sheet, are enclosed in a sleeve of film and then passed through, a tunnel of warm air to shrink the film firmly in position. This item is part of the MoDiP BXL collection.

BXL : 0448