to my detriment, i don’t know my hitches!
so if anyone knows these knots, let us know!
i won’t even take a guess. some of it’s because i hit my head pretty bad a week ago and still prone to glitchy cognition
i’m also interested in the machine that does this!
a different knot at each end with some strong thread connecting tag with tea.
the tag knot and the filter bag knot
so there’s no staple or glue,
tiny tiny knots
tea drinking tip -
the filter bags filter some of the the taste,
so i tear small nicks in the paper where it’s folded.
leaf tea is better but sometimes there’s a need for filter bags,
so, i’m not a complete tea snob,
just make the nicks in the bag 
I’m abashed to admit that I never read this post,
and here I am thinking that I might be the lone
knotter paying attention to such in-our-midst knottings!
Examining tea-bag knots takes some care, prying
open w/Xacto knife point, looking w/magnifier, sometimes.
I’ve seen some variety, and am pretty sure that in some
cases there is the same Tangle at bag as at tag, BUT the
loading --so, the Knots-- differs :: a timber hitch structure
–maybe a Fig.8 so disposed (for which ABoK has its own #)–
is loaded per normal at one point, like you show for the bag
above; but then at the tag, the S.Part leads into the twisted
part, reverse loading!