I did some batik in school and we ironed them fabric on kraft paper to get as much of the paraffin wax out as we could. It wouldn't all come out, but what was left was quite uniform.
If you need a thick layer that's uniform, I don't know. I wonder if there is a way to spray it while still hot. I think typical wax melts at 60 or 70 C. I searched for higher temp. wax for another project and found 85 C. If kitchen waxed paper works (doubt it, I missed what the project was about), extra wide rolls might be available thru industrial food supplier like Sysco. Murray --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.391 / Virus Database: 222 - Release Date: 9/19/02