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.
Surface topography of bare corrugated cardboard surfaces (A) and polymer coated surfaces (B). Color scale to right of pictures denotes height and depth in microns. Columns in table: Profile roughness parameter (Ra), the maximum height (Rt), and maximum valley depth (Rv) of uncoated corrugated cardboard surfaces (row 1) and coated (300 μm) surfaces (row 2) (C). Both pictures and table indicate tempering of roughness profile with the addition of polymer on cardboard.
