Ok I ordered Some mylar and 02 absorbers... After I Fill The Mylar and drop in The absorber Should I get most of the Air Out before sealing? Any Vids On Useing Mylar on Here I looked for some... Thanks Dave
I seen the Dollar Store Has Hair Straightner for 11 bucks... I have 20 of the 1 gallon Bags and 100- 300 cc o2 absorbers on the way... Its a Start... The bags are 10x14 7mm mylarJust squeeze out as much air as you can and seal. Avoid the temptation to vacuum seal. O2 absorbers don't work right in a vacuum and mylar isn't designed for it anyway. The O2 absorber will do the rest.
You might try an electric hair straightener for sealing the bags. I found it works smoother, easier, and makes a wider seal than the iron method.
Again we see poor advice being given about vacuum sealing, O2 absorbers and Mylar.I vacuum seal my Mylar bags with a Food saver. I use a 2000 cc Oxygen Absorber inside the bag. I don't want the oxygen absorber to work since it is not needed. In a few year I will be opening the bucket. Inside will be a perfectly good oxygen absorber. I might not have the food saver or electric power if I want to reseal the Mylar bag. If the Mylar bag was to leak the oxygen absorber would start to work. The bucket itself would now be the final protection since I use Gamma lids which are air tight.
Oxygen Absorbers don't work under negative pressure or a 29 inch vac.A oxygen Absorber will get hot if its working right. You can use hang warmers instead of using oxygen absorbers.
Mylar bags can hold a vacuum.
I am not so sure that MR_SLOW is the one giving poor advice on the matter of use of O2 absorbers in conjunction with partially vacuum sealing of mylar bags.Again we see poor advice being given about vacuum sealing, O2 absorbers and Mylar.
First Mylar isn't designed to work with a vacuum. Nothing is gained and much is lost be doing this. If it were a better way manufacturers would be doing it but don't.
As to O2 absorbers I'll repost some simple math that I did for another thread and then you figure which is better.
So, would you prefer .1cc of O2 or 66 cc's of O2 around your food? Since O2 absorbers don't work well, if at all, in a vacuum you will still have all that O2 around your food.
(The “10 inch” remark relates to the use of one of their heat sealers.)Vacuum Sealers
You can seal bag up to 10 inch wide, and the vacuum in fact removes enough air to allow the use of a smaller oxygen absorbers. To guarantee a three years minimum shelf life, we still recommend a 300 cc Oxygen Absorbing Packet.
PAKDRY 7500 Back to Main Page
PAKDRY7500 is a 7.5 mil thick (minimum) high moisture and gas (oxygen, carbon dioxide et al) barrier film with a dual layer of both 48 gauge polyester and 60 gauge biaxially oriented nylon providing very high tensile strength and resistance to puncture, making this product suitable for vacuum packaging applications and for very large bags including cargo container liners. As an FDA approved substrate for food contact the 6.0 mil MINIMUM metallocene P.E. sealant layer has made this the product of choice for bulk food, fine pharmaceutical powders and medical device engineering specifications.
NOTE: Our PAKDRY7500 structure is 7.5 mils minimum with an FDA approved sealant layer.
A vacuum doesn't remove as much O2 as an O2 absorber would. So just using the O2 absorber in mylar would better protect the food. Secondly, O2 absorbers apparently have their own shelf life. 6-8 months if I remember right. They also contain a small amount of moisture to get the reaction started. Everything wants to reach equilibrium, so the dry food is going to act like a dessicant, removing the moisture from the O2 absorber over time. So you really aren't achieving anything this way.I vacuum seal my Mylar bags with a Food saver. I use a 2000 cc Oxygen Absorber inside the bag. I don't want the oxygen absorber to work since it is not needed. In a few year I will be opening the bucket. Inside will be a perfectly good oxygen absorber. I might not have the food saver or electric power if I want to reseal the Mylar bag. If the Mylar bag was to leak the oxygen absorber would start to work. The bucket itself would now be the final protection since I use Gamma lids which are air tight.
A partial vacuum perhaps. But where do we draw the line at "partial"? The O2 absorbers require the headspace gas to work correctly. Since there's no benefit to the vacuum, as the O2 absorber does a better job on it's own anyway, why trust it?I personally do not feel that an O2 absorber is affected by a partial vacuum. There is still plenty of O2 left after applying a vacuum, so why would it not absorb that? However, I agree that there is no need to apply a vacuum before sealing a mylar bag when an O2 absorber is used, and indeed, the higher vacuum force may contribute to a bag failure. When sealed correctly, the o2 absorber will cause a mild vacuum in the bag as the decrease in O2 will lower the partial pressure inside the bag, creating the ideal environment for long term food storage.
i agree. have only done 50 bags but still holding strong.The best advice is to just package foods like the food storage companies are doing it. They know what they're doing already. Trying to second guess the process leaves room for too many errors.
So you're happy having more O2 in with your food, than you would have just using the O2 absorber alone? I guess I just don't see the logic. Apparently neither do the long term food storage companies.I vacuum seal my Mylar bags using a food saver. It has been modified to seal Mylar. I also throw in a oxygen absorber packet. Holds fine and i think it will do the job.
did you read my statement? I do not complicate things. I fill the bag up, get rid of excess air by pressing down on the bag after dropping in an O2 absorber and seal it. The O2 absorber then creates the partial vacuum.A partial vacuum perhaps. But where do we draw the line at "partial"? The O2 absorbers require the headspace gas to work correctly. Since there's no benefit to the vacuum, as the O2 absorber does a better job on it's own anyway, why trust it?
If it was a better method, the food storage companies would use it. We already know for a fact that what they are doing works. Do we know for a fact that what you suggest does? Why complicated things when there is no improvement to be gained? The combination of vacuum, partial or not, and O2 absorbers does not lower the O2 level more than the O2 absorber itself would have done. I see no benefit to the risk.