Peel off lid is a new type of composite technology that uses aluminum foil to bond with tinplate or coated aluminum substrate. It has the characteristics of high sealing and certain pressure resistance. Its processing technology includes: using tinplate or aluminum as the basic material, after punching, stretching, and rounding to achieve the purpose of safety and not hurting hands after opening; covering with metal composite film or ultra-high temperature resistance Sterilized composite plastic film, and then through the handle production and embossing treatment, in order to make the appearance beautiful and easy to open