General Question

ninja_man's avatar

Freezer bags or regular?

Asked by ninja_man (1133points) August 29th, 2012

What is the difference between Ziploc® freezer bags and their regular bags?

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18 Answers

gailcalled's avatar

From Yahoo! answers, “The freezer bags are thicker plastic and help to stop freezer burn. If you squeeze as much air out of the bag as you seal it, it will keep what ever you’re freezing longer.”

Sunny2's avatar

The freezer bags are made of a heavier plastic. Oops. @gailcalled beat me to it.

ninja_man's avatar

@gailcalled @Sunny2 Yeah, I kinda figured that was case since one can kind of feel the difference when handling them.

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LuckyGuy's avatar

I have wondered about that myself. If the regular bags are supposedly air-tight and impervious to water, what does that make the freezer bags? double impervious?
I thought the thicker bags offered better mechanical strength. A sharp edge on the food will be less likely to poke through as the food is frozen. But, I have no data to prove this.
I use regular bags unless I have something with bones in it. I probably will save $10 over my lifetime by doing so.
@ninja_man Here’s some lurve for the question. Was it good for you? Now please wash your hands.

ninja_man's avatar

@LuckyGuy That is what I was getting at. I thought perhaps the regular bags were gas permeable, or perhaps the freezer bags had some sort of moisture absorbing barrier to help cut down on frost. Looks like they might just be a thicker plastic. Swell.

Coloma's avatar

Yes, to all of the above. The freezer bags also work very well for freezing the corpses of small mammals that you find interesting to keep for purposes of show and tell.
Ziplock Shrews, flying squirrels and such. The freezer has eyes. lol

LuckyGuy's avatar

Plastic wrap is impervious too and it is a heck of a lot thinner – but it doesn’t seal easily.

Clearly I should be doing something else now but… I just measured the wall thickness of three different type of storage bags. All numbers are with 5 micron resolution. .
Tops Resealable Snack bags – 10 micron
Glad Quart Zipper bag. – 25 micron
Boulder Twin lock Freezer – 105 micron.

I can work out the permeability to Nitrogen, Oxygen and water vapor but that will cost you. I suspect all three are very close.

@Coloma I have odd stuff in my freezer too! Elm tree leaves, wet paint brushes, ...

LuckyGuy's avatar

I just checked the thickness of Glad Cling Wrap: 11 microns. +/- 0.8 micron
You’re welcome.

I’d better get back to work.

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