Protective packaging for photographic materials
A special case among the protective packaging for cultural property is packaging for photographic documents. This includes films, negative strips, paper prints, contact prints, glass plates, slides and, more recently, digital prints.
Unlike conventional archival and library materials, which are predominantly made of paper, photographic documents are made of a wide variety of materials.
Preserving such documents, many of which are very fragile, is a major challenge in the field of preservation.
The storage conditions and handling of the objects have to meet much higher requirements than for conventional archive and library materials.
In addition to consistent climate control, packaging is of crucial importance for protection against mechanical damage and chemical changes.
The following principles should be observed when planning, producing and using protective packaging for photographic materials:
All objects should be packaged individually so that chemical interactions do not occur. Additionally, mechanical damage can also be avoided in this way, e.g., friction between two paper prints can scratch the photographic layer of the print below (the dangers are even greater if several glass plates are packed together).
- As a storage unit, such small units are problematic. Therefore, an outer packaging is needed that accommodates a number of individual objects, protects them from mechanical damage and creates a manageable storage and transport unit.
- While alkaline buffering in the packaging materials is welcomed as an additional aid against acid formation in the paper and as protection against environmental influences in the case of conventional archive and library materials, photographic objects should not come into contact with it because a chemical reaction between the buffer substance and the chemicals of the photographic layers cannot be ruled out. Therefore, only unbuffered, ph-neutral paper materials should have direct contact with the photographic objects.
For the composition of the packaging elements and the selection of the materials to be processed, this means:
- Each individual photograph, each film/negative strip and especially each glass plate receives individual wrapping. The materials used for this purpose must not contain any alkaline buffer material, but must otherwise meet the requirements for age-resistant paper materials according to DIN ISO 9706, provided they are made of paper. The Photographic Activity Test (PAT) is used to prove that the photographic objects are not chemically affected. Our range includes sleeves with postfold and fourflaps for glass plates made of unbuffered photo archival paper, Melinex sleeves and glassine sleeves.
- SchemppBoxes of various designs can be used as outer packaging. Depending on whether the objects are to be stored horizontally or vertically, how large they are and how many individual items are to be placed in a box. We recommend SB 21 slip lid boxes, SB 31 hinged lid boxes or other constructions made of aging-resistant corrugated cardboard.
Standards for storage media for photographic documents:
- DIN 15549: Image recording materials – Materials for photographs – Nature of storage media.
Material for direct contact with photographic documents: