各結果は、統計的に有意であることを確認するため、通常5組の有効な検体について平均される。この方法は 再現性とトレーサビリティの業界標準に沿ったものである。 quality assurance in paper manufacturing.
Applications ASTM D4917 Paper Static and Kinetic Friction Testing
について printing paper COF test is essential in the paper and printing industry to evaluate feedability, stackability, and runnability. Applications include:
Uncoated paper COF testing for office and commercial printing
Friction testing in label papers, packaging materials, and corrugated board
Evaluation of paper compatibility in digital and offset printing presses
Reliable COF measurements help manufacturers optimize surface treatments, reduce machine stoppage rates, and ensure customer satisfaction.
Advanced Solutions for Paper Friction Testing
Advanced Solutions for Friction Testing: COF-01 by Cell Instruments
To simplify ASTM D4917 compliance, Cell Instruments offers the COF-01 摩擦係数テスター, engineered for precision and ease-of-use. The COF-01 supports both static and kinetic COF testing in accordance with ASTM D4917 and other relevant standards.
Key advantages of COF-01 include:
Fully automated movement and force detection
High-precision load cell and real-time digital display
Suitable for printing paper COF test, uncoated paper COF test, and other materials
User-friendly interface with multi-language support
Compatible with data acquisition and report generation systems
For quality control personnel and lab technicians, COF-01 ensures fast, accurate, and repeatable testing, helping paper producers stay compliant and competitive.
FAQs
1. What is the purpose of the ASTM D4917 standard?
ASTM D4917 standardizes the procedure for measuring the static and kinetic coefficients of friction of paper, particularly uncoated printing and writing paper, to ensure consistent performance in applications like printing and packaging.
2. How does the test method simulate real-world paper behavior?
The horizontal plane method mimics the sliding of paper sheets during machine feeding and stacking, making it highly relevant for assessing frictional properties that affect real-use scenarios.
3. Can ASTM D4917 be used for coated papers or specialty papers?
While designed for uncoated papers, ASTM D4917 may be applied to other types with an understanding that results may vary in precision due to differences in surface properties.
4. What’s the difference between static and kinetic COF in paper testing?
Static COF measures the resistance to initiating motion, while kinetic COF measures resistance during continued movement. Both are essential for understanding paper handling behavior.
5. Difference between ASTM D4197 and ASTM D4198
Unlike alternative methods like ASTM D4918 (inclined plane method), ASTM D4917 provides quantitative measurements of both static and kinetic friction, which are essential for understanding the complete sliding behavior of paper. The method is especially valuable for uncoated writing and printing papers, where uniform feed performance is critical.