The manufacturing of multi-layer ceramic capacitors (MLCCs) involves a series of highly precise processes, including ceramic slurry coating, green sheet handling, layer stacking, and lamination. Throughout these stages, polyester film functions as a critical supporting material that helps ensure smooth production and consistent product quality. Although it is not incorporated into the final MLCC structure, its role is essential for maintaining the integrity of ultra-thin ceramic layers during processing. Alfa Chemistry is committed to providing customers with high-quality MLCC polyester film designed to support stable processing performance and consistent product quality in advanced electronic manufacturing applications.
The Role of Polyester Film in MLCC Manufacturing
(i) One of the primary applications of polyester film is as a carrier film during the ceramic tape-casting process. Ceramic slurry is coated onto the film to form thin and uniform ceramic green sheets. The polyester film provides a stable and smooth base that supports the formation, drying, and transportation of these delicate layers.
(ii) Polyester film also plays an important role in the handling and transfer of ceramic layers. As MLCCs continue to evolve toward smaller sizes and higher layer counts, the ceramic sheets used in production become increasingly thin and fragile. The film acts as a protective support, helping prevent stretching, wrinkling, contamination, or mechanical damage during movement and storage.
(iii) In addition, polyester film contributes to the precise alignment of ceramic layers during stacking and lamination. Accurate layer registration is essential for achieving the designed electrical characteristics of MLCCs.
Product Features
01
- Excellent Surface Flatness
MLCC polyester film exhibits outstanding surface flatness, providing a smooth and uniform interface during processing. This helps reduce uneven stress distribution and minimizes defects such as indentation, wrinkles, or misalignment during lamination and handling. As a result, it significantly improves process stability and supports higher production yield in precision MLCC manufacturing.
02
The film is manufactured under strict cleanroom-controlled conditions to ensure a high level of cleanliness. Its extremely low particle generation and minimal surface contamination help prevent defects in sensitive electronic processes, making it suitable for high-end MLCC production environments where purity is critical.
03
- Excellent Thermal Resistance
MLCC polyester film demonstrates strong thermal resistance, allowing it to maintain stable physical and mechanical properties under elevated processing temperatures. This ensures reliable performance during heat-intensive manufacturing steps without deformation or degradation, supporting consistent process stability.
04
- Outstanding Aging Resistance
The film offers excellent aging resistance, maintaining its structural integrity and performance characteristics even after prolonged exposure to thermal and environmental stress. This long-term stability helps ensure consistent material behavior throughout storage and repeated processing cycles.
05
- Superior Mechanical Properties
The film features enhanced mechanical performance due to its optimized polymer structure. High tensile strength provides strong resistance to stretching and breakage, while increased elastic modulus improves rigidity and structural stability, making it well-suited for high-speed automated processing environments.
Product Specification
| Cat: ACSEM-Con-0024 |
| Technical Indicators | Unit | Specification |
| Thickness | μm | 25-50 |
| Tensile Strength | MD | MPa | 200±70 |
| TD | MPa | 200±70 |
| Elongation at Break | MD | % | 160±60 |
| TD | % | 160±60 |
| Thermal Shrinkage (150°C × 30 min) | MD | % | ≤1.7 |
| TD | % | ≤1.0 |
| Surface Roughness | Ra | nm | ≤35 |
| Rz | nm | ≤700 |
Why Choose Alfa Chemistry
Alfa Chemistry provides high-quality MLCC polyester film products designed to meet diverse manufacturing requirements. Backed by extensive industry experience, stringent quality standards, and global service capabilities, we help customers achieve greater process reliability and manufacturing success. If you have any needs, please feel free to contact us.
