The present invention relates to a composite film comprising a substrate and a bacterial cellulose film to a process for the production of the composite film and to use thereof as wound dressing.本發明關於一種複合膜,其包含一基底層及一細菌纖維膜;關於一種製造該複合膜之方法;以及關於其作為創傷敷材之用途。