Glassine

Glassine is a type of translucent paper. While it is often described as being transparent, resistant to grease, air and moisture, that really means relative to normal paper. It is nonetheless protective to stamps, inert and thus safe for stamps.

It is used for interleaving between album pages, particularly useful for double-sided album pages where stamps on facing pages can catch and damage each other.

The material is also used for pockets and interleaving for stickbooks.

It is also commonly used for the storage envelopes tha come in various sizes.

The material can last for decades under ideal storage comditions. It will brown and decay like paper if under constant exposure to heat, light and oxygen/oxidizing substances.

Glassine is criticized for not being fully transparent. But is is protective, potentially long-lasting and inexpensive. Acetate is an alternative material, which has pluses and minuses itself. See: acetate.





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