I need some expert suggestion regarding the CPET tray Sealing.
we manufacturing frozen foods ( Process: cooking- chilling meat portion- assembling with rice warm around 75F and then blast freeze it)
Afterwards remove the product from blast freezer and transferred to film sealing (set temp for heat 375F) Seal Dwell time 3Sec.
However CPET trays is not sealing some of the area. The film is removing. (Causes: I assume in the assembly line they scoop the portioning of the components but some of the components are oily/grease which dropped on the lip of the container. Thus, its not stick properly.
Is there any food grade wipes can we use to wipe the oily/grease area before sealing.
we have customer complain regarding the seal. And we have to fix it by 7 days or we may breach our contract.