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The term "Hollinger" refers to the manufacturer, Hollinger Metal Edge, a company founded in 1945 in Arlington, Virginia. Hollinger Metal Edge worked with officials at the Library of Congress and National Archives of the United States to develop acid free papers, storage boxes and envelopes that would preserve archival collections. [1]
If the original binding is too deteriorated, the book may be rebound with new archival safe materials. [62] Whole leaves or sheets of weak or brittle paper are reinforced by backing each sheet with another sheet of paper. Japanese paper is sometimes used as a backing, adhered with a starch paste. [63] A book conservator examining pages of a ...
Polyester sleeves, acid-free folders, and pH buffered document boxes are common supportive protective enclosures whose selection must match the media's chemical and physical properties. [1] Other considerations in preserving paper/books are: Damaging light, particularly UV light, which fades and destroys media over time by breaking down the ...
All materials should be acid-free for conservation. The depth of the box is normally about five inches, if it is not made for a specific object, and various standard sizes are made, with traditional names including "royal", "imperial", "elephant" and others. Ones for very old books will typically be custom made to an exact size.
The company Hercules Incorporated developed the first alkaline sizing in the 1950s that made acid-free paper possible. [10] Despite the advances in paper making and the identification of and concern around the brittle book problem, it took decades before the adoption of ANSI NISO Standard Z39.48-1984 - Permanence of Paper for Publications and Documents in Libraries in 1984.
Mass deacidification—along with microfilm and lamination—was developed during the early and mid-20th century as a response to the chemical process of hydrolysis by which the fibers that constitute paper, providing its structure and strength, have their bonds broken, resulting in paper that becomes increasingly brittle over time.
Cellulose diacetate film was first created by the German chemists Arthur Eichengrün and Theodore Becker, who patented it under the name Cellit, from a process they devised in 1901 for the direct acetylation of cellulose at a low temperature to prevent its degradation, which permitted the degree of acetylation to be controlled, thereby avoiding total conversion to its triacetate.
The photographic glass plates are stored vertically on the long side of the plate in storage boxes whose material is free of acid, lignin, polyvinyl chloride (PVC), dye, sulfur, and alum. The acidity of any paper storage used should show a pH between 7 and 8.5. [26] Glass plates should not be packed tightly and should not rub against each other.
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