Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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bristol board

A lightweight board that can be made on either a Fourdrinier or cylinder papermaking machine. There are three types of bristols: 1) index, 2) mill, and 3) wedding. They range in thickness from 0.006 inch and greater. The original bristol board, made in Bristol. England, was a pasted board made of rag content paper, but very little bristol today is of this character. Bristols are sometimes filled, but are more commonly pasted or plied, the thicker sheets being made by pasting sheets of the same stock together until the desired thickness is attained. They are designated as 2-ply, 3-ply, etc., according to the number of sheets used. The highest grade of bristol is wedding, followed by index and mill. (17 , 234 , 320 )

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