Blue Board

Blue Board

Blue Board is a specialized type of acid-neutralized cardboard widely used in the production of archival storage boxes and enclosures. Its name derives from the characteristic blue-grey color imparted during its manufacturing process. The board is specifically engineered to provide long-term protection for fine art, photographs, manuscripts, textiles, and other valuable or sensitive objects. Its neutral pH composition makes it resistant to acid migration, which is a primary cause of paper and artwork degradation over time.

Properties of Blue Board

• Acid-Neutralized: Blue board is buffered to ensure a pH of 7 or higher, protecting stored materials from acidic deterioration.
• Sturdy Composition: The dense cardboard provides rigidity and structural stability for storage containers.
• Archival-Grade: Designed specifically for conservation and preservation purposes, making it preferable to standard cardboard.
• Durable: Resistant to warping, bending, and crushing, ensuring longevity in storage conditions.

Applications in Archival Storage

Blue board is most often used to create archival storage boxes, folders, and protective housings for artwork and documents. It helps shield against dust, light exposure, pollutants, and physical damage. In museum and library contexts, blue board is preferred for boxing rare books, photographs, and works on paper. Framers may also employ it for custom-built enclosures to extend the preservation of clients' valuable pieces.

Conservation and Archival Considerations

Unlike ordinary corrugated cardboard, which is highly acidic, blue board has been processed to neutralize acids and often incorporates buffering agents such as calcium carbonate. This makes it suitable for long-term storage in controlled environments. However, in certain cases, especially with highly sensitive materials like photographs or protein-based artifacts, conservators may prefer unbuffered storage options to avoid chemical interactions.

Preventative Use

• Best used in climate-controlled environments where humidity and temperature remain stable.
• Can be paired with protective interleaving materials such as Glassine or Mylar for additional safeguarding.
• Acts as a physical barrier against acid migration from external materials.

Related Terms

• Archival Storage
• Corrugated Cardboard
• Coroplast
• Glassine