Figure 7.
Combustion resistance of NFL nonwoven fabrics: (a1) burned area and (a2) corresponding cutting section of N4F4L2 and N3F5L2; (b1) burned area and (b2) corresponding cutting section of N4F4L2 and N5F3L2.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.