| 摘要 |
<p>A composite packaging structure comprises a frame-like member (21) of expanded polystyrene with a peripheral step shaped to receive one end of a domestic electrical appliance to be packaged thereby, and a sheet or film of rigid impermeable material (6) shaped as a tray and peripherally bonded to the frame-like member. A process for the production of the composite packaging structure of the invention comprises hot moulding the frame-like member (2) in a mould cavity comprising two dies (7,8) opening the mould by displacement of a movable one of the dies (8), stretching the film over the fixed die (7), reclosing the mould and subjecting the contents to a second heating under pressure to heat-form the film to a tray-like shape and at the same time bond it to the frame member (2).</p> |
