UL file numbers
The UL-File numbers are assigned by the organisation Underwriters Laboratories to inspect products; their main task is to help finding safety norms. It is extremely important to document the fire behaviour of plastics (Yellow-Card) and to categorise it (UL-File-Number).
The most important UL-file-numbers are:
Mylar A: E93687
Hostaphan WN: E53895
Hostaphan RN: E53895
Nomex Typ 410: E34739
Nomex Typ 411: E34739
Nomex Typ E56: E34739
Makrofol DE: E41613
Ultem WH217: E61257
Norton TH (Taimide): E231847
Noryl EFR 0735: E121652, E207780
(Source: Wikipedia, Internet, various technical books)
Since the Dr D Mueller GmbH is an UL recognized repacker the materials do not lose their UL certification during processing.