a lid for closing a cup along a peripheral sealing edge and a method for producing such a lid . the lid includes at least one aluminum film and an optionally multi - layered plastic layer which is co - extruded onto the aluminum film and has a closed predetermined tearing line . the plastic layer is made of plastic based on polyethylene or plastic based on polypropylene , and the predetermined tearing line is introduced into the plastic layer preferably by means of a co 2 laser . the predetermined tearing line may be provided directly in the region of the sealing edge .