ブックタイトルConservation and Restoration of Western Paper

概要

Conservation and Restoration of Western Paper

Photo 34a Mylar tabPhoto 34b Tabs securing the documentPhoto 35a Inserting the mounted document into thepreservation casePhoto 35b Installing the UV filter anti-reflective glass lidPhoto 36 The new display case with the Proclamationof the Constitution at the Canadian Museumof Human Rights, Winnipeg, Manitobaall the security requirements when thedocument is on public display.Case designs for prestigious Americandocuments at the Library of Congress wereused as a starting point for the collaborationbetween CCI and LAC. Our collectionsmanager worked closely with a CCI scientistto design a case that is airtight, glazed withanti-reflective glass, and machined from asingle anodized aluminum block. It is alsofitted to provide an anoxic environment inthe future 18 .The aluminum block was milled toprovide cavities for a dessicant (silica gel), anatmospheric pollutant scavenger (charcoalcloth), and a bellow (heat-sealed marvelseal) to regulate small changes in air pressureinside the airtight case (Photos 33a,b).The document is mounted on an anodizedmetal plate with a specially designed passivesystem of mylar tabs that are secured withmagnets (Photos 34a,b). The UV filteranti-reflective glazing is incorporated intoa lid that is secured with screws and sealed80