How to Choose a Coffee Bag Barrier Structure for US Retail

Most US micro-roasters underestimate how humidity and UV exposure degrade aroma within 14 days of filling. A standard PET/AL/PE laminate with a degassing valve remains the most predictable structure for 250g–1kg SKUs shipped DDP.

When you spec thickness, target 100–120 micron for hand-fill operations and 120–140 micron for automated vertical form-fill. Always request COA-backed oxygen transmission data — not just a marketing "high barrier" claim.

Windy recommends locking your dieline before artwork: valve placement, tear notch, and bottom gusset width directly affect freight cube and therefore your landed DDP quote.