Historical
T 653
Specular gloss of paper and paperboard at 20 degrees
This method is for the measurement of the specular gloss of high-gloss papers at 20ø (70ø from the plane of the paper). This method is suitable for high-gloss coated, cast-coated, lacquered, highly varnished or waxed papers, and high-gloss ink films. For the measurement of low- to moderate-gloss coated and uncoated papers and low- to moderate-gloss ink films, TAPPI T 480 "Specular Gloss of Paper and Paperboard at 75 Degrees" is preferred. Neither method is a measure of image reflecting quality. This method will provide different values for 20ø gloss than ASTM Standard D523 due to differences in optical geometry.
CONTENT PROVIDER
Technical Association of the Pulp and Paper Industry [tappi]
Technical Association of the Pulp and Paper Industry [tappi]