Back in the day when I used to produce a lot of bagged wing I used the tube bags from ACP.Â* I would attach the breather to the inside of the bag so I didn't have to fuss with it each cycle. Â*Â* I was often able to get 20 to 30 uses out of a single bag.Â* You can see this setup with the attached breather in this very old video that I made:Â* https://vimeo.com/2357551
I also use poly tubing
for several application.Â* You can get it in rolls in various thicknesses.Â* I used the 4 mil for multi-use and the 1.5 mil for single use.Â* I used an 24'' impulse sealer
to seal the ends and an ACP vacuum port through the bag.Â* I would cut the bag longer than I needed and then cut one end just inside the seal with a scissors to open it.Â* I could then reuse it by just sealing the open end again with the impulse sealer.Â* The bag will get slightly shorter with each use.
You can also heat weld your own with poly drop cloth plastic using the technique shown in the video.Â* This video shows it's use for bladder fabrication for molding but you can use the same technique to seal bags.Â* You can go directly to minute 3 to see the sealing method.Â* https://vimeo.com/35648020
If I'm bagging molds then I often use the caulk method.Â* Wing molds can be rather heavy and difficult to slip into a tube style bag.
If you are doing vacuum infusion then the poly plastic and Stretchlon 200 is notorious for being slightly permeable and fouling the infusion.Â* I'd recommend making your bag from Stretchlon 700 or 800 for infusion.