16 CFR 1202.4 - Matchbook general requirements.
A matchbook shall meet the following general requirements:
(c) No friction material shall be located on the inside of the cover where possible contact with the matchheads may occur during ordinary use.
(g) No part of a staple or other assembly device for securing the cover and combs shall be within or touching the friction area.
Title 16 published on 2013-01-01
no entries appear in the Federal Register after this date.