there is disclosed an apparatus for applying top end stops to a fastener stringer chain substantially in a continuous cycle of operation , wherein a first means is provided to effect the fusing and shaping of a strip of plastic film for application to the chain and a second means is provided to effect the cutting of the chain to which the film strip has been applied in the form of a top end stop . said first and second means are arranged so that both shaping and cutting take place at the same working station without having to transfer the chain for the two different operations .