Are you referring to resale packaging or for storage or both?
Both. I sell my soap so when I wrap it for sale I use glassine bags and a cardboard sleeve. If I'm storing it for personal use I just pack it in cardboard boxes with no wrapping. Bars of soap will keep on curing and changing their composition over time and I don't want any moisture build up inside packaging because soap will continue to lose moisture even if it's minute amounts. I'm also trying to move to a more sustainable model in both life and sales so I want biodegradable/compostable packaging.
Even in heat-sealed in plastic soap will continue to lose moisture shrink and cure.
I am sure they will work. You can probably vacuum them but they will eventually loosen as your soap will continue to shrink, and will not be as noticeable in the mylar bags as it is in shrink wrap bags. I always liked the look of the window mylar bags and we used them in the past for some of our products but they were too expensive for my soaps. If you acquired them at a good price I say go for it. What I like is you can label the back of the bags. What color did you buy? Just curious, I have a bunch of silver ones I got at a good price and never used, but I think mine are probably bigger than you are using. I will have to look.
Mine are 4.7" X 7.9" and I got them for 5¢ each. They have a black back w/clear window. I have chose a black and white theme for my business so they fit in great. I thought about just packaging what I need for each craft show that I go to, instead of doing them all at once. If they don't really work for my soap, I have plenty of other products that I can use them for.
I will give it a try but I have a lot of uses for them if it doesn't work for the soap.
I bought them from a Chinese import store that was going out of business. Someone bought the remaining 800 before I realized what kind of deal I was getting for the 200 I bought.
I wish I could have helped you.
