airmail paper
A lightweight paper made for printing publications
such as newspapers that are to be sent by airmail.
It usually contains fillers to improve opacity,
and is generally made in a basis weight of 10
pounds (17 X 22 – 500). Airmail paper is
also used at times for guarding sections, mending
tears, etc. For these purposes, it is preferable
that the paper have a high rag content and an
alkaline reserve of about 3%. (17 , 58 )
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