How to process cowhide
As a natural material, cowhide is widely used in footwear, bags, furniture and other fields. Its processing involves multiple steps, including pretreatment, tanning, finishing and other links. The following is a compilation of technical discussions and industry trends related to cowhide processing in hot topics across the Internet in the past 10 days. It combines structured data to provide you with a detailed analysis of the processing process.
1. Related data of hot topics across the entire network
| Hot search keywords | search volume index | Related processing links |
|---|---|---|
| Environmentally friendly tanning technology | 18,500 | tanning stage |
| Cowhide dyeing process | 12,300 | finishing stage |
| Automated splitting machine | 9,800 | preprocessing stage |
| Identification of first layer cowhide | 15,200 | Raw material grading |
2. Decomposition of core processes of cowhide processing
1. Preprocessing stage
| Process name | Equipment/Materials | Time taken (hours) |
|---|---|---|
| Soak in water and soften | drum pool | 6-12 |
| hair removal cleaning | Lime vulcanizing agent | 4-8 |
| Section classification | Automatic splitting machine | 2-3 |
Recent industry reports show that energy consumption in the pretreatment stage accounts for 40% of the overall processing process, and new biological enzyme hair removal technology can reduce the amount of chemical preparations by 30%.
2. Tanning stage
| Tanning method | Material ratio | pH range |
|---|---|---|
| Chrome tanning | Basic chromium sulfate 3-5% | 3.8-4.2 |
| vegetable tanning | Tannin 15-25% | 4.5-5.5 |
| aldehyde tanning | Glutaraldehyde 2-4% | 6.0-7.0 |
According to discussions at the latest technology forum, the composite tanning process (chrome-vegetable combination) can increase the tear resistance of leather by 20%, making it a hot process in the near future.
3. Post-processing stage
| finishing type | Key parameters | Temperature control(℃) |
|---|---|---|
| Dyeing | Dye dosage 1-3% | 55-60 |
| Fatliquor | Oil dosage 8-12% | 45-50 |
| embossed | Pressure 20-30MPa | 80-100 |
Social media data shows that the topic of "water-based coating technology" has increased by 120% in the past seven days, reflecting the surge in demand for environmentally friendly coatings.
3. Key points of quality control
1. Raw material screening: A recent quality inspection report pointed out that the pass rate of first-layer cowhide with a thickness of 2.0-2.5mm reached 92%.
2. Tanning monitoring: chrome tanning liquid absorption rate must be ≥85% (new industry standard)
3. Physical property index: tensile strength >20N/mm² (International Leather Association 2024 benchmark)
4. Industry development trends
1.Intelligent transformation: Leading companies have introduced an AI visual sorting system, and the defect recognition accuracy has increased to 97%.
2.sustainable materials: The vegetable-based tanning agent market size is expected to grow to $320 million in 2025
3.Customized needs: E-commerce platform data shows that personalized embossing orders have increased by 65% annually.
The current processing technology is developing in a more environmentally friendly and efficient direction. It is recommended that practitioners pay attention to:
- The latest revisions to the EU REACH regulations (updated in January 2024)
- "Water Saving Specifications for Leather Industry" issued by China Light Industry Federation
- New standards for raw material grading announced by the American Leather Association
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