NatureVAC Aluminum Mylar Vacuum Rolls | 15 in x 19.5 ft, 2 per Box

What the Aluminium Layer in NatureVAC Aluminum Mylar Rolls Does A metallised layer does two jobs that a plain polyethylene film cannot. It stops light completely rather than filtering it. It also cuts oxygen transmission by a large margin, which is the one that matters over months. Oxygen is what turns a stored crop stale even inside a sealed bag. Plain clear film slows oxygen, while a metallised laminate nearly stops it. The roll is 15 in wide and 19.5 ft long, with two rolls to a box. A case holds twelve boxes, so twenty-four rolls in all. Each roll carries the honeycomb channel pattern a channel sealer needs to draw air. That makes it work with NatureVAC sealers and with most other brands. Material is BPA free and made from US FDA food-safe stock. One point of practice is specific to this version of the film. A metallised film must stay out of a microwave, pierced or otherwise. Choosing an Oxygen Barrier Film Over a Clear One An oxygen barrier film costs more per foot, and it gains shelf life rather than convenience. For anything stored beyond a few months that trade is usually worth making. For a bag opened next week it is not. So the choice between this and a clear roll comes down to how long the seal has to hold. The cost of the barrier is visibility, and it is total. Nothing is visible through a metallised wall, so every bag needs a written label. Build that into the routine rather than discovering it at the back of a shelf. Cutting to length is where a roll beats a pre-cut bag. Make the bag fit the load instead of the other way round and you waste less headspace. Leave about three inches above the contents for the seal and for a second seal later. Seal twice at the open end on anything going into long storage. Two welds an inch apart survive handling that a single weld does not. Key Features Metallised aluminium layer: Blocks light completely and cuts oxygen transmission sharply. 15 in x 19.5 ft rolls: Two rolls to a box, with twelve boxes to a case. Honeycomb channel pattern: What a channel vacuum sealer needs to draw air out of the bag. Sealer compatibility: NatureVAC sealers and most other brands of channel sealer. BPA free, FDA food-safe stock: Across the roll range. Keep it out of a microwave: Metallised film is not microwave safe, pierced or not. No visibility at all: Every bag made from this roll needs a written label. Technical Specifications Specification Value Brand NatureVAC Product Aluminum Mylar vacuum seal roll SKU 794099 Roll width 15 in Roll length 19.5 ft Rolls per box 2 Case quantity 12 boxes, so 24 rolls Film Metallised aluminium laminate Colour Aluminium silver on both faces Light transmission None Visibility None Channel pattern Honeycomb Sealer compatibility NatureVAC sealers and most other brands Microwave Not suitable for this film Oven or broiler Not suitable Compliance BPA free, US FDA food-safe materials