PA/PE or plain PE: when do you need nylon?
PE is cheaper, but it lets oxygen through and punctures easily. Here is where nylon pays for itself.
Seafood
Vacuum bag or shrink bag: which one for your product?
Both remove air. One stays loose at the edges, the other tightens around the product.
Smooth or embossed vacuum bags
Chamber machines and external sealers need different bags. The wrong one leaves air in the pack.
Choosing vacuum bag gauge for frozen seafood
Thicker is not always better. Match the gauge to the product, the weight and the cold chain.
Why vacuum packs lose their vacuum: five common causes
Most leakers come from the seal, not the film. Here is what to check first.
How to read a packaging spec
What “200 × 300 mm / 90 μm / 3-side seal” tells you, and the two numbers people get wrong.