Lid for a foodstuff packaging unit such as a yoghurt cup and the like comprises an embossed aluminum foil whose embossing takes the form of roughly sinusoidal lines with a specified range of period lengths

摘要

The lid for a foodstuff packaging unit such as a yoghurt cup and the like comprises an embossed aluminum foil whose embossing takes the form of roughly sinusoidal lines with a period length between 20 mm and 150 mm.