Patent ID: 11944926
Assignee: ULTRA SMALL FIBERS, LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B  D | IPC B  D

Claim 8:
9. The method of claim 8, further comprising:
providing a source of second polymer film; and
feeding the second polymer film into the space between the circumferential surface of the first cylindrical roll and the circumferential surface of the second cylindrical roll while rotating the covered first cylindrical roll to the second angular position so that the first and second polymer films are compressed in the space to join the second polymer film to at least a portion of the first polymer film covering the circumferential surface of the first cylindrical roll;
wherein removing the cooled polymer from the first cylindrical roll as an elongate film is removing the joined second polymer film and cooled first polymer film from the first cylindrical roll as an elongate layered construct after the first and second polymer films pass through the space; and
wherein the polymer that infiltrated the nanoholes forms the array of nanofibers on a surface of the elongate layered construct.