Almost total barrier against moisture, oxygen and gas
A catalyst or intermediate that picks up moisture in transit can be worth many times the value of the whole packaging order. The rejection happens at the destination, thousands of kilometres away, where nobody can inspect anything until it is too late.
For products that spoil on contact with moisture, oxygen or light, a plain polyethylene liner is not enough.
An aluminium layer stops what polyethylene alone lets through.
The aluminium barrier drum liner uses a layer of aluminium foil laminated between polymer layers. This gives an almost total barrier against gas and moisture, with very little passing through even at the heat-seal.
This construction is used where the product has to stay in exactly the same condition over a long storage or shipping period, and keep both its original physical form and its chemical properties.
Our development work has been on the seal. A barrier film is only as good as its weakest seal, and most barrier failures happen there rather than through the film. Our 5-layer and 6-layer structures are built and sealed so that permeation at the seal stays minimal, which is what makes the barrier claim real over a long voyage.
Every one of these can be changed for your application, and a sample is supplied for trial fitment before bulk production.
Questions
A liner built from aluminium foil laminated with polyester, nylon and polyethylene layers, in 5-layer and 6-layer constructions, giving an almost total barrier against moisture, oxygen and atmospheric gases. It is used where the product inside degrades on contact with air or humidity, and where that degradation will not be discovered until the drum is opened at the destination.
When the batch is worth many times the packaging. A catalyst or pharmaceutical intermediate that picks up moisture in transit is rejected thousands of kilometres away, where nobody can inspect anything until it arrives — so the real cost is never the liner, it is the rejected batch and the freight already spent on it. Long export routes and hygroscopic products are where the arithmetic changes.
At the seal, not through the film. A barrier film is only as good as its weakest seal, and most barrier failures happen there. That is where GI PackTech has concentrated its development work: the 5-layer and 6-layer structures are built and sealed so the seal is not the limiting factor, rather than specifying an impressive film and joining it carelessly.
Catalysts, pharmaceutical intermediates, hygroscopic powders, specialty chemicals and moisture-sensitive additives. Layer count, foil thickness, seal structure and diameter are all specified per order, and a conductive variant or a desiccant pocket can be built in where the product needs static control or active moisture scavenging as well as a passive barrier.
Commonly specified with
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Every product we make is built to order, so the conversation starts with your specification rather than with our price list. Sample liners and trial covers are supplied for fitment before bulk production begins.
