Strip evenness tester
Strip Evenness Tester: Precision Material Uniformity Analysis
The strip evenness tester is a critical quality control instrument designed to assess the uniformity of rolled or sheet materials, including paper, film, metal foil, and textiles. This article details its applications, technical specifications, operational principles, and adherence to industry standards, making it a valuable resource for manufacturers seeking to enhance material consistency and production efficiency.
Applicable Standards
The tester complies with international standards such as ISO 378, TAPPI T 410, and ASTM D3764, ensuring accurate measurements for global compliance. It supports multi-industry requirements, including packaging, electronics, and automotive sectors.
Main Parameters
| Parameter | Specification |
|---|---|
| Measurement Range | 0–500 μm (thickness) / 0–100 g/m² (basis weight) |
| Precision | ±0.5% of reading |
| Test Speed | 1–50 m/min (adjustable) |
| Sample Width | Up to 2000 mm |
| Data Resolution | 0.1 μm / 0.1 g/m² |
Working Principle
The tester employs non-contact sensors (e.g., laser triangulation or beta radiation) to scan material surfaces as they pass through the measurement head. Real-time data on thickness, basis weight, or density variations is captured and analyzed to detect deviations from target uniformity.
Test Principle
- Uniformity Mapping: Sensors generate cross-web profiles to identify thickness/density fluctuations.
- Statistical Analysis: Software calculates coefficients of variation (CoV) and generates defect reports.
- Process Optimization: Data guides adjustments in raw materials, rolling speeds, or coating processes.
This tester enables proactive quality control, reduces waste, and ensures compliance with stringent industry standards. Its high-resolution output and modular design cater to diverse applications, from polymer film production to paper manufacturing.