MACHINE DIRECTION GRAMMAGE VARIATION MEASUREMENT (GRAVIMETRIC METHOD)

• This method describes a procedure which can be applied to determine the short term machine direction variation in mass per unit area .
• The general procedures outlined in TAPPI T 410 “Grammage of Paper and Paperboard (Weight per Unit Area)” and in TAPPI T 402 “Standard Conditioning and Testing Atmospheres for Paper, Board, Pulp Hand sheets, and Related Products,” are used as basic references for this method.
• This method provides significant accuracy and repeatability to be used for acceptance testing of papermaking equipment and for product specification.
• The apparatus required for this method is detailed in TAPPI T 410.

It Provides information on:

• Sampling
• Test specimens
• Calculations
• Keywords