Patent ID: 11498319

Abstract:
The invention relates to a composite film (1), preferably intended for use in the construction industry and/or preferably for use as a construction film, having at least one functional layer (2), at least one outer protective layer (3) and at least one inner protective layer (4), the functional layer (2) being arranged between the outer protective layer (3) and the inner protective layer (4). According to the invention, it is provided that the functional layer (2) is formed as at least a single-layer membrane layer, that the outer protective layer (3) and the inner protective layer (4) are formed as a nonwoven layer comprising a polyolefin, and that the outer protective layer (3) and/or the inner protective layer (4) comprises at least one bicomponent fiber (5) having a first component (6) and a second component (7), the first component (6) comprising a first polymer and the second component (7) comprising a second polymer as constituent.