They are substances found in trees that help hold the cellulose fibers together. If lignin is not removed, it can cause the paper to lose color and deteriorate. Free sheets lack lignin.
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Foil Stamping
Discover the Art of Foil Stamped Printing with Print Peppermint What is...
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Letterpress Printing
Letterpress - make a debossed impression with the classiest printing method around.
