Charts & Datasets

TAPPI has a solution for dirt -- the kind that gets into your products during the manufacturing or shipping process.  

TAPPI’s Dirt Chart cards estimate the equivalent black area (EBA) of dirt or other colored specks. The equivalent black area of a dirt speck is defined as the area of a round black spot on the white background of the TAPPI Dirt Estimation Chart that makes the same visual impression as the dirt speck on the material in which it is embedded. Dirt Estimation Charts are manufactured from an original negative on Kodak photographic paper. The paper positive is produced in a NuArc contacting frame with an Olite light source and Olix light integrator. The light integrator precisely controls the exposure. Each piece of photographic paper that is produced during the manufacturing process is evaluated with an X-Rite densitometer for correct exposure.

To ensure the accuracy of the charts, each piece is measured by examining the .20 dot with a 100 x magnifier that has a reticle (scale) incremented in 5/10,000 mm on the lens. This opaque chart can be used with TAPPI Test Methods  T 213T 437, and  T 537.  

You want to hear more? Check out TAPPI’s size estimation chart (for use with Test Method  T 564). Developed from 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.  

The TAPPI Calibrated Size Estimation Chart is a great solution for quality control applications where exact dimension specifications are required. Each Calibrated SEC comes with its own data sheet that provides an actual dot measurement area (expressed in squared mm) to correspond with the increments (dots) on the chart.

Dirt Estimation Chart  (Opaque) 
Product Code: 0109DIRT 
Member Price: $41               
Non-Member Price: $58 

Size Estimation Chart  (Transparency) 
Product Code: 0109DIRTT 
Member Price: $57               
Non-Member Price: $82

Calibrated Size Estimation Chart  (Transparency)

Product Code: 0109DIRTCAL 
Member Price: $300 
Non-Member Price: $350

 

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Books
Paper Coating Viscoelasticity and its Significance in Blade Coating

Paper Coating Viscoelasticity and its Significance in Blade Coating

Operating Experiences at Goricane Paper Mill, Medvode, Slovenia, 2000 Metered Size Press Forum

Operating Experiences at Goricane Paper Mill, Medvode, Slovenia, 2000 Metered Size Press Forum

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Books
Critical Thinking in Converting

Critical Thinking in Converting

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Language of Business, Volume II

Language of Business, Volume II

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Starch and Starch Products in Surface Sizing and Paper Coating eBook

Starch and Starch Products in Surface Sizing and Paper Coating eBook

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Flexographic Terms: A Glossary of Terms Used in Flexographic Printing on Corrugated Board

Flexographic Terms: A Glossary of Terms Used in Flexographic Printing on Corrugated Board

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Paper Machine Quality Control Systems Volume1 (book & ebook)

Paper Machine Quality Control Systems Volume1 (book & ebook)

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High Purity Pulps: Testing, Accessibility and Reactivity

High Purity Pulps: Testing, Accessibility and Reactivity

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Paper Machine Quality Control Systems Vol. 1 E-Book

Paper Machine Quality Control Systems Vol. 1 E-Book

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Glossary of Reprography and Non-Impact Printing Terms for the Paper and Printing Industries

Glossary of Reprography and Non-Impact Printing Terms for the Paper and Printing Industries

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Ensuring Workplace Competence: Developing Training and Certification Materials for Todayâ??s Empowered Workforce

Ensuring Workplace Competence: Developing Training and Certification Materials for Today’s Empowered Workforce

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Corrugator Roll Wear Measurement

Corrugator Roll Wear Measurement

Development of Metered Size Press Coating for High-Speed Operations, 2000 Metered Size Press Forum

Development of Metered Size Press Coating for High-Speed Operations, 2000 Metered Size Press Forum

Premetered Roll Coating System in Gorge De Domene, 2000 Metered Size Press Forum

Premetered Roll Coating System in Gorge De Domene, 2000 Metered Size Press Forum

Maintenance and Calibration Manuals for Rotary Diecutters and Flexo Folder-Gluers

Maintenance and Calibration Manuals for Rotary Diecutters and Flexo Folder-Gluers