Hi Brian, I do large PVC banners all the time, using POLYPLASS screen
ink. I suggest you use a high density sponge roller to apply the ink to the banner, the only problems are;
1. Use a well ventilated space as the PVC inks are VERY smelly and might cause a chesty cough.
2. Have at least 3 spare roller sleeves as the PVC ink attacks the sponge and the sleeve will eventually rot away.
3.Allow the banner to dry before moving it . If you nead to fold the banner after the ink has been applied DO NOT crease it or the ink in the
crease will come off, I prefer to roll up the banner.
4. Select the PVC ink colour you require and DO NOT buy it in gloss as this will stick to itself when you attenpt to roll up or fold the banner, I always use matt, or a mixture of matt and gloss together to make a silk finish, which is better to stick vinyl graphics too.