I don't get to any industry trade shows, so the technology below may be news only to me.

New developments in coffee bags.

Regards
Timo

P.S. A company that makes cans of inert gas for wine preservation happens to have their warehouse only ten minutes from my house. I am going to test that approach with bags that I re-open a couple of times a day, and with a one-way-valve-modded Snapware container, which I fill with inert gas, then beans, and then more gas, and let sit for 10 days.

One way valve bags have been the industry standard since the late 70s. It gives you an extra 7 to 14 days of shelf life for our standard of fresh coffee. By SCAA standards, valve bags keeps coffee fresh for around 6 to 12 weeks.

Improvements in the mylar/foil laminates used in the packaging seem to be ongoing. I have no idea how much better a current state of the art valve bag is compared to one from 20 years ago.

Yes, I realize that the one-way valve is standard, but it looked also as though these have a sliding zip-loc enclosure in addition to some new laminates they're touting. In conjunction with the inert gas spray I am going to be testing, the sliding ziploc seal method would work best.

Roasters I've ordered from have used:

-- zip-loc (press to seal)
-- alligator clip
-- bent metal clips
-- sticky tape

The sticky tape is least reliable. After being opened and closed several times, it loses its adhesiveness and the bag always works its way open. The zip-loc works quite well, as does the alligator clip.

Regards
Timo