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This is the highest quality paper matboard available. Acid-free [8] or acid free lined – This material usually has a recycled fiber core, lined with a wood-based liner on one or both sides that has been treated [9] to prevent "short term" acid burn. Eventually the acid in the core will leach out to the surface, which can harm the artwork.
A hand-coloured photograph should be removed from the frame, retaining any original screws or nails holding the frame together. Wood panels, acidic cardboard slats, and acidic backing paper can be removed from the frame and mat-board and discarded, retaining any identifying information such as stamps or writing on the backing paper.
Foamcore, foam board, or paper-faced foam board is a lightweight and easily cut material used for mounting of photographic prints, as backing for picture framing, for making scale models, and in painting. It consists of a board of polystyrene foam clad with an outer facing of paper on either side, typically white clay-coated paper or brown ...
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.
Modern prints onto paper protected from the sun and moisture will last an incredibly long time. Prints made using newer alkaline and acid-free paper have a life expectancy of over 1,000 years for the best paper and 500 years for average grades. When it comes to older prints, the condition of a print largely depends on the technique used to make ...
However, protection behind a glassed frame is also a mixed blessing. Acids coming from the mat and backing papers lead to the discoloration of a print even if it was originally produced using acid free paper. [4] [5] A full conservation of a print preserved behind glass requires removal of all papers and treatment of the print itself by a ...