Curious thought about Vac Sealing, bags/jars

[OpenStrife]

I was talking with my astrophysics teacher about vacuums, basically we got to a point somehow that if a vacuum is surrounded by a non-vacuum, all particle movement will be inward.

This made a lot of sense when he explained it.... This being said.... how can any odor/particle permeate outward through a vac sealed bag/jar when all particle movement is inward, and pressure is greater outside the jar/bag?

Has anyone ever actually been caught with multiple vac sealed bags? I can understand smells permeating through 1 vac sealed bags.. but multiple? How, scientifically, is this possible, when all particle travel is inward? Is this possible?

For permeation to work on a membrane there has to be random particle movement in all directions. If there is always an inward dynamic, this isn't possible, theoretically.

Any thoughts?

 

[big twinn]

I dont think the smell will permeate the bag unless the bag has very tiny microscopic holes on the surface of the plastic. Another reason a dog might alert to a vacuum sealed bag (the more likely reason) would be because the person handling the bag had some sort of cannabis residue on the surface of there fingers that microscopically coated the surface of the bag in some way (ex: a trich head/granule of kief). So always use gloves and scrub the outside with soap and warm water after completely sealed. Your correct what your teacher said about the particle movement inside of a vacuum.

 

[Guywithoutajeep]

You can bag it ten times over, but over time smell will pass through.

 

[Hammerhead]

Foodsaver type bags are for short term storage. Mylar and O2 absorbers are for long term storage.

All clear plastic bags are air permeable, meaning they can't keep air out for long. Mylar bags are at least 3 layers with aluminum in the middle, which makes them an excellent air and moisture barrier.


At most foodsaver bags are only good for a couple years in preserving food. Mylar bags are good for at least 10 years if used properly.

If the food you're storing will be consumed in a couple years the foodsaver bags would be fine. Long-term food/product storage bags and all high O2 or H2O barrier materials are NEVER transparent.


From Sorbent, a supplier of both type of bags;
http://www.sorbentsystems.com/mylar.html

 

[Hash Zeppelin]

Also remember the warmer the stinkier. The hotter organic material is the faster it breaks down therefore the more it smells. Also remember elevation. The higher elevation, the lower air pressure. If you are sending from a mountain town in Colorado to like New York City at sea level then the air will compress. If going the opposite it will expand.

 

[Wiggs Dannyboy]

If I were you, I'd go back and ask your teacher exactly what you asked in this thread. Even if the teacher isn't interested in cannabis at all, scientific minds are innately curious about these kind of questions, and I bet they would be able to answer it better than anybody in this forum.

 

[Kush_Master]

from my knowledge if you handle the buds and then touch the bags then the smell molecules or whatever will be on the outside and dogs will be able to detect them.

in howard marks book he explains that there is actually a method to get it smellproof, i think they vac seal it in small barrels and then wash down the barrels with iso-alcohol to get rid of the molecules outside on the barrels.

 

[Hash Zeppelin]

I think dogs can smell right through even ten layers of them.