--------- layers of flutes are in Double Wall corrugated board.

---------- ISO standard defines the measurement of brightness in paper.

The moisture passing through the film in a given time is measured and reported as --------- for a packaging film. 

The most common application of thermoforms is for various forms of --------- display pakcaging. 

Screen Printing Inks usually dry by a combination of ----- and ------- process.

The packaging board that has middle layer of mechanical pulp sandwiched by bleached chemical pulp