TAPPI/ANSI T453 Effect of Dry Heat on Properties of Paper and Board
TAPPI/ANSI T 453 testing specifies the procedure for dry heat treatment of paper or board, and the general procedure for testing the heat-treated materials. The purpose of TAPPI/ANSI T 453 testing is to obtain, by an accelerated aging test, inferences regarding the aging qualities of the paper.
The standard TAPPI/ANSI dry heat test is based on work that has been done with printing and writing papers, but it may be used with discretion on other types of papers and boards.
When completing testing, a TAPPI/ANSI T453 test lab will essentially compare selected test properties of paper or board before and after accelerated aging in a forced ventilation oven at 105oC.
Exposure of paper or board to a hostile environment, such as some types of radiation, elevated temperature, or chemical attack over a period of hours or days, may provide information concerning:
- The natural changes that may occur in the material over a period of years and;
- The ranking of similar papers with respect to long term stability.
Hostile environments that have been used include exposure to heat, to heat and moisture, to visible and ultraviolet radiation, and to sulfur dioxide, nitrogen dioxide, and ozone gas.
Properties that may be compared before and after exposure include, but are not limited to:
- Mechanical properties, such as burst, tensile properties, folding endurance and tearing resistance;
- Optical properties, such as brightness, yellowness and opacity;
- Chemical properties, such as pH and alkali solubility.
Expert TAPPI 453 Compliance Laboratory
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