wenna

Understand the different questions answered by seal-strength and leak testing before approving a flexible pouch.

Review window size, material construction, privacy, artwork and supporting evidence before changing a pouch design.

A silver pouch does not reveal its construction. Compare foil and metallized options through documented structure and finished-pack trials.

Compare pouch barrier data using matching units, temperature, humidity, sample structure and test basis—not isolated numbers.

Convert mil to microns correctly and avoid comparing single-wall film thickness with a two-wall pouch measurement.

Check opening instructions on a filled, sealed pouch: placement, contrast, grip space, translation and the reclosing step.

Why zipper appearance is not proof of child resistance, and how to compare closure samples without making unsupported claims.

How buyers can specify the applicable packaging test basis without assuming ISO and US reports are interchangeable.

A document review checklist for packaging test reports: sample identity, scope, results, issuer verification and production traceability.

Understand what a zipper, first-opening seal and barrier layer each do, and which evidence to request for each packaging claim.