Glassine is a smooth and glossypaper which is air-, water-, and grease-resistant. It is usually available in densities between 50–90 g/m2 (0.010–0.018 lb/sq ft). It istranslucent unlessdyes are added to the paper to color it or make itopaque. It is manufactured bysupercalendering: after pressing and drying, the paper web is passed through a stack of alternating steel-covered and fiber-covered rolls called a supercalender at the end of the paper machine so that the paper fibers are oriented in the same direction.[citation needed]
Glassine is most commonly used as a base for further silicone coating for the manufacture ofrelease liner. Glassine is also used as an interleaving paper inbookbinding, especially to protect fine illustrations from contact with facing pages; the paper can be manufactured with a neutralpH and can prevent damage from spilling, exposure, or rubbing. Glassineadhesive tape has been used in book repair. Inchemistry, glassine is used as an inexpensiveweighing paper. It is applied infoodservice as a barrier between strips of products (for example: meat,baked goods). Glassine is resistant togrease and facilitates separation of individual foodstuffs.[citation needed]
Glassine has been recommended for protecting the surface of stored acrylic paintings.[1] However, glassine will adhere to soft (not completely cured) and medium-rich paint, especially when stored for an extended period of time and it may cause permanent damage to the painted surface. Therefore, art conservators do not recommend that it be used to wrap paintings.Philatelists use glassineenvelopes to store stamps, andstamp hinges are made of glassine.[2] Amateurinsect collectors use glassine envelopes to store specimens temporarily in the field before they are mounted in a collection. Entomologists collecting for research may likewise use such envelopes to store whole specimens in the field. Glassine envelopes carry pharmacy reformulateddrugs andillicit drugs such ascocaine andheroin.[3][4]Photographers used glassine sleeves for many decades to safely store their processed films. Glassine is also used to packfirecrackers, as it is moisture resistant. It is used for its transparent qualities to foldorigamitessellations.[5][6] Glassine is an outer covering onpaperboard tubes, particularly those used inmodel rocketry, for water protection.
In the mid-20th century,potato chips were packaged in glassine bags.[7]Herman Lay was a pioneer of using glassine in the potato chips industry.
Law enforcement officers arrested Thevenin at that location and recovered two boxes containing approximately 60,000 individually packaged glassines of heroin.
the DEA raided NUNEZs residence in the early hours of July 31, where heroin glassine bags (used to package heroin) were found that contained the official DEA Agency emblem.
