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Premier Boxes, Folders & Envelopes
A Storage System and Its History The New CXD Premier Boxboard |
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We laminate the board immediately prior to a box making. Die cutting when the board is still damp from laminating means that the board does not crack. Other boxes where the board is laminated and stored prior to being die cut are prone to cracking.
THE STORAGE SYSTEM
In 1981, Christopher Clarkson, while Conservation Officer at the Bodleian Library, designed a system of die-cut boxes, folders and shelf envelopes. CXD product codes for The Clarkson System incorporate (a e) of the standardised shelf sizes (a g), inaugurated in 1883 by Dr. E. W. B. Nicholson, reflecting traditional European formats. Two Oriental and four modern sizes were added by Clarkson to complete the eleven storage formats required. This well known system caters for the majority of protection problems in Libraries and Archives and reduces to a far smaller percentage those items requiring tailored boxing either phased (made from the same quality archival boxboard) or permanent cloth covered boxes. Guard fascicules which complete the system are designed to fit three of the die-cut box sizes. Introductory pamphlets are available which discuss the protection system and the design of the die-cut envelope folders and boxes in detail. We list the main points below:
SHELF ENVELOPES
Grain of card long wise so the envelope stands well on the shelf. Long side opening to help insertion and extraction of fragile items. Seams are at short sides, no seam runs across centre. A blind border line indicates the largest format that can be placed in that particular envelope. A blind box marks placement of shelf-mark.
ARCHIVAL FOLDERS
Two thickness adjustments for items of 12 mm thickness to 19 mm thickness. The folders have H slots cut through them to allow a tape tie to be used if required. Based on this design, and also available, are the pHase 3tm Folder Boxes which are made of heavier weight Premier boxboard and which take items up to 140 mm thick.
BOXES
A drop-spine design, the most commonly used type of box, allowing for the insertion and extraction of fragile books safely. Clarkson designed these boxes with double walls on three sides of the base and for additional strength, they were to be assembled with brass wire staples (no staples are exposed on the inside of closed box). As an alternative to brass staples the box design also offers the possibility of glue assembly. The boxes are self locking by means of oblong tabs which fit into the double wall. A characteristic of the design are the curved spine flaps which enclose the open ends of the spine when the box is closed. In 1993, eight new photographic sizes of drop spine boxes were added to the range by Conservation by Design.
LARGER FORMATS
In 1983 two die cut boxes were designed to house newspapers and periodicals horizontally. These boxes are for glue construction and are designed to limit twist and distortion when full.
ADDITIONAL DESIGNS
In addition to the Clarkson System we offer a variety of other designs for boxes, folders and envelopes which are all made from Premier grade material. Boxes can still be made using Original quality boxboard if budget restraints demand an even lower cost.
