H is for Headbox

blog alphabetseries-01

Welcome to our #OKalphabetseries where we visit paper and printing terms daily. Come back each day as we weave our way through the alphabet and share our 110 years of knowledge with you.

H is Headbox
The headbox is located at the first section of the papermaking machine. It is the initial portion of the forming section or “wet end” of the machine. The headbox deposits a mixture of pulp, dyes, and fillers (furnish) through a horizontal slit across the machine's width onto the forming wire. The slit is adjustable and variations in the paper weight can be made with it. The function of the headbox is to swirl and agitate the pulp mixture to keep clots from forming. It regulates the speed, thickenss and consistency at which the furnish is delivered onto the wire.

I is for International Sizes
G is for GSM

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