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Standards
Measuring, Sampling, and Analyzing White Waters, Test Method T 656 cm-07

Measuring, Sampling, and Analyzing White Waters, Test Method T 656 cm-07

Standards
Box blank dimensioning, Test Method T 827 om-17

Box blank dimensioning, Test Method T 827 om-17

Standards
Water vapor transmission rate of paper and paperboard at 23°C and 50% RH , Test Method T 448 om-17

Water vapor transmission rate of paper and paperboard at 23°C and 50% RH , Test Method T 448 om-17

Standards
Edgewise compressive strength of corrugated fiberboard using the clamp method (short column test), Test Method T 839 om-18

Edgewise compressive strength of corrugated fiberboard using the clamp method (short column test), Test Method T 839 om-18

Standards
Water Absorption of Corrugating Medium: Boat Method, Test Method T 819 wd-17

Water Absorption of Corrugating Medium: Boat Method, Test Method T 819 wd-17

Standards
Analysis of formaldehyde in aqueous solutions and of free formaldehyde in resins, Test Method T 600 om-15

Analysis of formaldehyde in aqueous solutions and of free formaldehyde in resins, Test Method T 600 om-15

Journal articles
Magazine articles
Standards
Subscription Access
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
Subscription Access
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.

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