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.
(h)
A staple used as an assembly device for securing the cover and combs shall be fully clinched so that the ends are flattened or turned into the cover.