Leather Filling Agent
Leather filling agent is an acrylic polymer or protein-based compound that fills the loose, open fiber network of cowhide flanks and bellies, producing a more uniform cross-section and improving overall leather quality. It penetrates deep into the corium layer to deposit polymer chains that bind loose fibers together, adding body and firmness. Enables production of high-quality shoe uppers and garment leather from previously lower-grade hides.
Technical Specifications
| pH | 4.0–7.0 |
| ionicity | Anionic / Amphoteric |
| appearance | White to cream emulsion or liquid |
| solid content | 25–40% |
| penetration depth | Full cross-section |
Applications
- Loose hide belly and flank filling
- Shoe upper leather quality improvement
- Garment leather uniformity enhancement
- Split leather filling and upgrading
- Automotive leather hide optimization
Key Features
- Deep penetration to fill loose fiber structure
- Improves cross-section uniformity significantly
- Upgrades lower grade hides to premium quality
- Compatible with retanning and fatliquoring agents
