printing on 100% poly fleece blankets

Does anyone have printing recommendations for 100% poly fleece throw blankets.

Blankets: Navy blue. 50" x 60".

Image area is 24" x 24"
1 color print -- white or off white.

I have read there are discharge ink systems that work on poly and synthetic garmet materials at orion-print dot com but would like to find out if anyone has had success doing so.

Thanks,
Rob

Location: 
United States