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Standards
Folding endurance of paper (Schopper type tester), Test Method T 423 cm-21
Folding endurance of paper (Schopper type tester), Test Method T 423 cm-21
Standards
Opacity of paper (15/d geometry, illuminant A/2°, 89% reflectance backing and paper backing), Test Method TAPPI/ANSI T 425 om-21
Opacity of paper (15/d geometry, illuminant A/2°, 89% reflectance backing and paper backing), Test Method TAPPI/ANSI T 425 om-21
Standards
Hot water extractable acidity or alkalinity of paper, Test Method TAPPI/ANSI T 428 om-21
Hot water extractable acidity or alkalinity of paper, Test Method TAPPI/ANSI T 428 om-21
Standards
Water absorbency of bibulous papers, Test Method T 432 cm-21
Water absorbency of bibulous papers, Test Method T 432 cm-21
Standards
Hydrogen ion concentration (pH) of paper extracts (hot extraction method), Test Method T 435 om-22
Hydrogen ion concentration (pH) of paper extracts (hot extraction method), Test Method T 435 om-22
Standards
Preparation of wood for chemical analysis, Test Method T 264 cm-22
Preparation of wood for chemical analysis, Test Method T 264 cm-22
Standards
Determination of sodium, calcium, copper, iron and manganese in pulp and paper by atomic absorption spectroscopy, Test Method TAPPI/ANSI T 266 om-24
Determination of sodium, calcium, copper, iron and manganese in pulp and paper by atomic absorption spectroscopy, Test Method TAPPI/ANSI T 266 om-24
Standards
Accelerated pollutant aging of printing and writing paper by pollution chamber exposure apparatus, Test Method TAPPI/ANSI T 572 sp-21
Accelerated pollutant aging of printing and writing paper by pollution chamber exposure apparatus, Test Method TAPPI/ANSI T 572 sp-21
Journal articles
Magazine articles
Standards
On-machine visible dirt measurement on moving sheets and the relationships to standard laboratory methods, TAPPI Journal August 2020
ABSTRACT: There has been a proliferation of new sensors to measure on-machine dirt specks that employ different technologies and methodologies to perform measurements. The differences in the on-machine technologies are discussed in terms of the TAPPI and ISO standard laboratory test methods with respect to dirt detection using light reflected from, or light transmitted through, the sheet. Also discussed are the requirements for measuring sta-tistically representative areas of the sheet; the difference between the dirt physical size and Equivalent Black Area (EBA) size; and the implication of these issues when specifying cleanliness acceptance criteria.This technical brief describes on-machine visible dirt measurement’s relationship to standard laboratory testing.
Journal articles
Magazine articles
Standards
Relating bending stiffness measurements across various free span lengths, TAPPI Journal August 2020
ABSTRACT: Bending stiffness should be an intrinsic property of a material, so it is puzzling that the TAPPI Standard Test Method T 836 “Bending stiffness, four point method” specifies span lengths when testing different types of corrugated fiberboard. These specified spans often limit the samples that can be measured with this method. To better understand the relationship between bending stiffness and span length, we performed measurements on a range of materials at different spans. The results provide a practical tool enabling comparison of bending stiffness measurements made at various span lengths. Additionally, this note discusses several areas that could serve as the foundation for more fundamental work exploring the bending behavior of corrugated board.