Preservation and Care of Philatelic Materials
Subsidiary Page
24
Encapsulation
Some documents, such as fragile papers, newspaper clippings, and other paper valuables,
are often best preserved when encapsulated. Most collectors include memorabilia to
augment a special event in the collection. Encapsulation will likely appeal to such
collectors. Newspaper clippings are examples of documents whose inherent impermanence
may make expensive, time consuming treatment impractical. Newsprint is highly acidic
and can be deacidified by using Wei T'o solutions. The newspaper clipping can be
encapsulated between two sheets of Mylar film and sealed with tape. The only tape
recommended is 3M's Double-coated Film Tape #415. Be certain that the tape is no
closer than 1/8 inch from the document. Again, we warn you never to use cellulose or
cellophane "Scotch" tape or masking tape. The adhesives used with these tapes is very
corrosive. They leave a residue on whatever they come in contact with and are not
reversible. Be certain that Mylar sheet or film is used in the encapsulation process. Art
shops and some picture-framing stores can usually help you with the technique of
encapsulation and the materials required for the process.
END OF SUBSIDIARY PAGE 24
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