Good answer to a very vague question.There are huge numbers of variables in this one. One of the significant ones is the color of the fabric. Another is the collimation of the laser. 10 meters is a large distance, most industrial units do it within a couple of cm.
Lasers have changed over the years, I'm frankly out of date. I used to service a 10W CO2 laser that melted solder, and we had a YAG laser that used 25 or so laser diodes to pump it, it was used to cut ceramics. If the collimation is tight you could get by with under a watt, as a guess.
by Aaron Carman
by Aaron Carman
by Jake Hertz
by Dale Wilson