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Separator & Materials Testing
Separator and other functional materials are evaluated through a comprehensive set of performance tests, including thickness and width uniformity, mechanical strength (puncture strength, MD/TD tensile strength), air permeability, and thermal shrinkage after coating at elevated temperature. In addition, appearance inspection, chemical compliance (RoHS), and overall performance judgement are conducted to assess material consistency and reliability. These evaluations provide critical data to verify the separator’s mechanical integrity, thermal stability, and compatibility with battery systems, supporting safe, efficient operation and long-term battery reliability.
Our Services
Item
| Canrd - Recommended List for Separator Evaluation - Case | ||
| Item | Standard Requirement | Test Equipment |
| Thickness | Overall thickness: 12 μm ± 1.5 μmAfter base film / coating: 9 μm / 12 μm | Digital micrometer |
| Width | 63.5 mm (+0.5 / −0.0 mm) | Vernier caliper |
| Puncture Strength | ≥ 350 gf | Puncture strength tester |
| Air Permeability | 150–280 sec / 100 cc | MODEL 4340 Automatic |
| MD Tensile Strength | Tensile strength ≥ 100 MPaElongation ≥ 60% | Tensile testing machine |
| TD Tensile Strength | Tensile strength ≥ 100 MPaElongation ≥ 60% | Tensile testing machine |
| Thermal Shrinkage after Coating(130 °C / 0.5 h) | MD ≤ 3.0%TD ≤ 2.0% | Constant temperature oven |
| Appearance | According to standard:• No scratches• No contamination or damage• Uniform color• No pinholes | Visual inspection |
| RoHS Compliance | ■ Yes □ No | — |
| Judgement | ■ Pass □ Fail | — |
