To blast into Teflon paper or not

Iv got a small blasting tube and want to do some smaller runs and conserve product so I bought some SlickSheet. As I understand it there is a certain viscosity and small amount of Butane that needs to remain in the teflon paper otherwise it will stick.
Should I blast directly into my pyrex container or into the this Slick Sheet that I got? Iv got scrapping tools also.

Both work! Chose your poison!

More important is safety: https://web.archive.org/web/20150329224943/https://skunkpharmresearch.com/butane-safety/

Blasted today into pyrex dish outside, then water bath. Pretty darn safe with half a can of butane.
Cold was great I think, everything frozen and done outside at 20. Fun day of scraping tomorrow and 4 hours on 110 deg with vacuum.