Tannery Leather Chemistry — How Full-Grain Napa Leather Is Made

The ETRNLY Journal — Artisan Stories & Craft Essays

About This Article — Leather is a chemical transformation of raw hide into a durable, beautiful mater

Leather is a chemical transformation of raw hide into a durable, beautiful material. Our master artisans explain the chemistry of how ETRNLY's full-grain Napa leather is produced.

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A raw animal hide is mostly protein and water. Left untreated, it would decompose within days. The tanning process interrupts that decomposition by chemically crosslinking the hide's collagen fibres — transforming a perishable material into leather that can last centuries.

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