Heatable food packaging with overpressure protection

摘要

The present invention relates to a food packaging (10), comprising a product carrier shell (12) which has at least on its outside (12a) CPET, and further comprising a cover (16) covering a receiving volume (26) of the product carrier shell (12) ) comprising a lid-film composite (19), which has a solid aluminum foil (18) and a PET foil assembly (20) connected to the aluminum foil (18), at least comprising a PET foil (22), wherein the lid (16 ) is connected to the product carrier shell (12) by means of the PET film arrangement (20) on a product side (20a) of the PET film arrangement (20) facing the product carrier shell (12), wherein a composite region in which one of the product side (20a) opposite lid side (20b) of the PET film assembly (20) faces the aluminum foil (18), comprises a permanent bonding zone (40) and a channel zone (30) other than the permanent bonding zone (40), the PET films facing (20) in the permanent connection zone (40) is permanently connected to the aluminum foil (18) and wherein the channel zone (30) from a location above the receiving volume (26) to at least the connection (24) of the lid (16) with the Product support shell (12) extends and in which aluminum foil (18) and PET foil assembly (20) are unopposed and / or connected with a lower connection force than in the permanent connection zone (40), wherein the PET foil assembly (20) in In the region of the channel zone (30) has a material weakening region (42) in which a material relationship of the PET film assembly (20) weakened or forming at least one through hole (44) which passes through the PET film assembly (20) and so in the channel zone (30) between the PET film assembly (20) and aluminum foil (18) located channel volume (46) with the receiving volume (26) connects, is completely canceled.