Size Estimation Charts Find Dirt and Defects in Industrial Materials May 23, 2011 Medical device manufacturers can implement a size estimation chart during the quality control process to find dirt and defects in industrial materials. The TAPPI T564 2011 Edition provides users with an editorially corrected standard practice on the use of the transparent chart itself. The transparent version of the TAPPI Dirt Estimation Chart must be purchased separately. The Transparent Chart was produced by request from industry segments that wanted only to have a quick size estimation method.
Dirt Estimation Chart TAPPI’s Dirt Charts are manufactured from an original negative produced on DuPont CRR film and estimate the equivalent black area (EBA) of dirt or other colored specks. The charts are processed on a rapid-access processor using Kodak/Fujifilm chemistry. Each chart is produced on photographic paper via a contacting frame with an NuArc light source and NuArc light integrator which controls the specific exposure designated for accuracy and consistency. Charts are exposed to 20 units of light.
To ensure the accuracy of the charts, each piece is measured by examining the 2.0 dot with a 100 x magnifier that has a reticle (scale) incremented in 5/10,000mm, on the lens. This opaque chart is to be used with TAPPI Test Methods T 213, T 437, and T 537. You may also be interested in TAPPI’s Size Estimation Charts. Developed from and based on the TAPPI Dirt Estimation Chart, this transparency is used to measure the size of spots, defects, or inclusions over the range of 0.02 to 5.00 square millimeters in paper and other industrial materials such as textiles or plastics.
You may also be interested in TAPPI's (Transparency) and (Transparency). Member: $41 List: $58. New Releases TAPPI Press Catalog Handbook For Pulp and Paper Technologists (The SMOOK Book), Fourth Edition The best-selling text to introduce the entire technology of pulp and paper manufacture. Nanocellulose End Users Guide and Perspectives Set Together, the two books form a complete set, and provide an in-depth study of the market for cellulose nanomaterials with critical insights for producers, processors, and end users. Check our newest additions.
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