1️⃣ Purpose of Texturing
- Enhance the visual texture of plastic parts
- Create product diversity and design appeal
2️⃣ What is Texturing?
- A surface treatment method for plastic molds, including:
- Sandblasting: Fine, fast, inexpensive, but low durability
- Pearskin: Moderate texture, hides mold lines, medium durability
- Leather grain: Durable, excellent effect, high cost, difficult to repair
- Special textures (wood grain, hairline, etc.): Limited to flat surfaces, non-repairable
3️⃣ Comparison of Texturing Methods
4️⃣ Pre-Texturing Inspection Points
- Sufficient mold draft angle (minimum 2°–5° depending on depth)
- Mold material consistency and hardness
- Surface presence of EDM layers or weld marks
- Forming material type (e.g., ABS/PC requires adequate draft angle)
5️⃣ Mold Manufacturing Precautions
- Avoid sulfur-containing steel
- Mandatory annealing and de-nitriding after welding
- EDM layers must be thoroughly polished before embossing
- SUS molds (e.g., STAVAX) require heat treatment before machining
6️⃣ Surface Roughness Testing (HOMMEL T1000)
7️⃣ Demolding Recommendations and Plastic Compatibility
- Reserve demolding angle ≥ 2.5° (approx. 3.5° for ABS, PC)
- Consider plastic flowability and demolding difficulty for depth and pattern density
- Recommended precision tolerance: ±0.0025mm (measured value)
8️⃣ Conclusion and Satin Finish Recommendations
- Key to successful satin finishing: uniform consistency treatment
- All satin finish designs must align with mold design and material selection
- Scientific management and test data are indispensable
| Item | Sandblasting | Pearskin Finish | Leather Grain |
| Processing Time | 1~3 days | 1~4 days | 4~7 days |
| Durable Shot Count | 5k~100k | 100k~200k | 100k~500k |
| Advantages | Fast, inexpensive, repairable | Even coverage, hides wiring | Extremely durable, resistant to damage |
| Disadvantages | Short lifespan | Deep narrow molds prone to unevenness | High cost, difficult to repair |
| Surface Texture | Ra (μm) | Rz (μm) | Rm (μm) |
| Sandblasting | 4.53 | 26.92 | 32.16 |
| Pearskin Finish | 12.18 | 58.84 | 64.88 |
| Skin Texture | 9.81 | 56.24 | 64.32 |
| Photography | 23.79 | 91.16 | 92.64 |