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Quebracho Bark Extract Vegetable Tannins For Leather Tanning
Product Details:
Payment & Shipping Terms:
| Minimum Order Quantity: | 25kg |
|---|---|
| Price: | 60~70USD |
| Packaging Details: | 25kg/barrel |
| Delivery Time: | 5-10days |
| Payment Terms: | L/C,T/T,Western Union,MoneyGram |
| Supply Ability: | 1000T |
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Detail Information |
Product Description
Quality indicators
| index | unit | Cold melt | Hot melt |
| Tannin | ％ | ≧67 | ≧71 |
| Non-tannin | ％ | ≦30 | ≦26 |
| Insoluble matter | ％ | ≦2.5 | ≦3.5 |
| Water content | ％ | ≦12 | ≦12 |
In leather tanning, tannin gum stabilizes animal hides by interacting with collagen fibers. Here's the specific mechanism:
Mechanism of Action
Collagen Bonding: Tannins form hydrogen bonds and other interactions with collagen fibers in the hide.
Cross-Linking: This creates cross-links between fibers, increasing the hide's stability and preventing decomposition.
Water Resistance: The cross-linking reduces water solubility, enhancing moisture resistance.
Process
Preparation: Hides are soaked and cleaned to remove impurities.
Tanning: Immersed in a tannin-rich solution, allowing tannins to penetrate and bond with the collagen.
Drying: The treated hides are dried, completing the tanning process.
Benefits
Durability: Results in robust, long-lasting leather.
Flexibility: Maintains the leather's flexibility.
Natural Finish: Provides a desirable color and texture.
Tannin gum is a natural, effective choice for environmentally conscious leather tanning.