Hi all i'm new
Anyways, i'm a graphic designer (or atleast i'm learning to be)
and i learn a fair deal of printing specifications.
Do note that these specifications apply to paper printing and maybe not on silk or other cloths. (for example it could also be possible it has to be silk screen printed
http://en.wikipedia.org/wiki/Screen-printing this seems more obvious but i don't know much about that.)
- maybe what i'm about to tell is completely obvious to some, sorry -
First of all the map has to be converted to a program like Photoshop.
Second, the resolution has to be 300 dpi - this is the most common standard.
Third, the color scheme has to be CMYK (cyan, magenta, yellow, black) and not RGB. (almost all printers work with these standards).
And last but not least it has to be converted to PDF. Some printers will accept other file extensions, but ALL accept PDF.
I hope this is of any use to you guys. Keep up the good work.