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Step-by-Step Tutorial
PRACTICAL WALKTHROUGH · PARAMETERS · COMMON MISTAKES
Edible, biodegradable packaging made from natural polymers such as starch, gelatin, and chitosan.
Origin: Japanese, Thai (centuries to present) — East Asia, Southeast Asia
See full technique reference →These films are produced by extrusion of starch blends at 120–140 °C, cross‑linking gelatin with glycerol, or coating with chitosan in acetic acid. Barrier properties are enhanced by citric acid curing and glycerol plasticization, while antimicrobial activity is achieved through chitosan’s polycationic nature.
Primary Reaction
Polymer film formation via extrusion, cross‑linking, and drying.
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