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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Controlling Consistency of Paper Machine Stock and Broke Systems, 1997 Papermakers Conference Proceedings

Controlling Consistency of Paper Machine Stock and Broke Systems, 1997 Papermakers Conference Proceedings

Mill of the Future: The Human Resource Challenge, 1994 Papermakers Conference Proceedings

Mill of the Future: The Human Resource Challenge, 1994 Papermakers Conference Proceedings

Pressroom to Mill Feedback for Problem Solving and Product Development, 1994 Papermakers Conference Proceedings

Pressroom to Mill Feedback for Problem Solving and Product Development, 1994 Papermakers Conference Proceedings

Computer Aided Engineering of Paper Machine Dryer Sections at Kruger's Bromptonville Mill, 1997 Papermakers Conference Proceedings

Computer Aided Engineering of Paper Machine Dryer Sections at Kruger's Bromptonville Mill, 1997 Papermakers Conference Proceedings

Formation: Questions Most Often Asked by Papermakers, 1997 Engineering & Papermakers Conference Proceedings

Formation: Questions Most Often Asked by Papermakers, 1997 Engineering & Papermakers Conference Proceedings

Control of Biofil in Alkaline White Water Systems with Chlorine Dioxide, 1997 Papermakers Conference Proceedings

Control of Biofil in Alkaline White Water Systems with Chlorine Dioxide, 1997 Papermakers Conference Proceedings

Increasing Paper Making Efficiency: Four Steps to Process Chemistry Optimization, 1997 Papermakers Conference Proceedings

Increasing Paper Making Efficiency: Four Steps to Process Chemistry Optimization, 1997 Papermakers Conference Proceedings

Effect of Fines Level and Compressibility on Filtration Resistance of Fibrous Suspensions, 1999 Papermakers Conference Proceedings

Effect of Fines Level and Compressibility on Filtration Resistance of Fibrous Suspensions, 1999 Papermakers Conference Proceedings

Operating Results of a TNT Reel, 1997 Papermakers Conference Proceedings

Operating Results of a TNT Reel, 1997 Papermakers Conference Proceedings

Tetrakishydroxymethyl Phosphonium Sulfate ( THPS): A New Biocide With Environmental Benefits for Paper Mills, 1997 Papermakers Conference Proceedings

Tetrakishydroxymethyl Phosphonium Sulfate ( THPS): A New Biocide With Environmental Benefits for Paper Mills, 1997 Papermakers Conference Proceedings

Forgotten Felt Roll, 1998 Papermakers Conference Proceedings

Forgotten Felt Roll, 1998 Papermakers Conference Proceedings

Wet End Management by Controlling Consistencies and Charge, 1999 Papermakers Conference Proceedings

Wet End Management by Controlling Consistencies and Charge, 1999 Papermakers Conference Proceedings

Reducing Specific Energy in Refining with a New Key Figure and Innovative Fillings Materials, 1996 Papermakers Conference Proceedings

Reducing Specific Energy in Refining with a New Key Figure and Innovative Fillings Materials, 1996 Papermakers Conference Proceedings

Practical Considerations in the Development of STFI in Paperboard, 1999 Papermakers Conference Proceedings

Practical Considerations in the Development of STFI in Paperboard, 1999 Papermakers Conference Proceedings

Pitch or Stickies, 1996 Papermakers Conference Proceedings

Pitch or Stickies, 1996 Papermakers Conference Proceedings

Effects of Temperature, pH and Alkalinity on ASA Sizing in Alkaline Papermaking, 1996 Papermakers Conference Proceedings

Effects of Temperature, pH and Alkalinity on ASA Sizing in Alkaline Papermaking, 1996 Papermakers Conference Proceedings

Pitch Deposition in Newspring Mills Using Certain Kaolin Pigments, 1996 Papermakers Conference Proceedings

Pitch Deposition in Newspring Mills Using Certain Kaolin Pigments, 1996 Papermakers Conference Proceedings

Review of Web Heating and Wet Pressing Literature, 1999 Papermakers Conference Proceedings

Review of Web Heating and Wet Pressing Literature, 1999 Papermakers Conference Proceedings

Concert of Apparent Viscosity of Pulp for Beating Analysis and the Development of the Paper Properties, 1996 Papermakers Conference Proceedings

Concert of Apparent Viscosity of Pulp for Beating Analysis and the Development of the Paper Properties, 1996 Papermakers Conference Proceedings

Engineering Analysis of Lightweight High-Opacity Newsprint production by Fiber loading, 1999 Papermakers Conference Proceedings

Engineering Analysis of Lightweight High-Opacity Newsprint production by Fiber loading, 1999 Papermakers Conference Proceedings