The present invention provides a method for producing frozen dough which can be directly transferred from freezer to oven without a proofing or thawing step. A method of bonding films, wherein two sheets of films made of a fluororesin, are disposed so that their edges overlap each other, a central part of the overlapping portion is press-bonded under heating at a temperature within a range of from lower by 5\xb0 C. The resolution system then identifies a dynamic address name associated with the received domain name.