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2. Mat (picture framing) - Wikipedia

   en.wikipedia.org/wiki/Mat_(picture_framing)

   While most newer mats are acid-free, there are some papers that contain acid and one should ask the picture framer about the acid content of the mats if the desired life of the piece being framed is more than 75–100 years. The difference is important for the long term protection of the piece because acidic mats can cause what is called mat ...

3. Fiberboard - Wikipedia

   en.wikipedia.org/wiki/Fiberboard

   Wax prevents fibers from clumping together during storage. Chips in the case of particle board are also sprayed with a suitable adhesive before the next steps. Fibers or chips are arranged into a uniform "mat" on a conveyor belt. This mat is pre-compressed and then hot-pressed. Hot-pressing activates the adhesive and glues the fibers or chips ...

4. Foamcore - Wikipedia

   en.wikipedia.org/wiki/Foamcore

   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 ...

5. Paper chemicals - Wikipedia

   en.wikipedia.org/wiki/Paper_chemicals

   Chemical pulping involves dissolving lignin in order to extract the cellulose from the wood fiber. The different processes of chemical pulping include the Kraft process, which uses caustic soda and sodium sulfide and is the most common; alternatively, the use of sulfurous acid is known as the sulfite process, the neutral sulfite semichemical is treated as a third process separate from sulfite ...

6. Mass deacidification - Wikipedia

   en.wikipedia.org/wiki/Mass_deacidification

   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.

7. Acid-free paper - Wikipedia

   en.wikipedia.org/wiki/Acid-free_paper

   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.