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7. Binding for Library Use

These quality requirements apply to volumes bound or rebound for library use. These apply in addition to the quality requirements for binding described elsewhere in this document.

7.1 Gathering and Collating

All periodical volumes shall be examined by the supplier to ensure completeness, correct issue sequences and proper sequence of pagination. Customer instructions shall determine the arrangement of title page, index, inserts, supplements, the inclusion or omission of covers, advertising and similar matters.

All volumes to be rebound for library use shall be carefully inspected by the client to achieve the most appropriate binding method considering longevity and frequency of use. The paper condition, the type and condition of the original binding and the width of the binding margin shall all be examined.

7.2 Tip-in

Maps, illustrations and folded sheets in a volume to be rebound for library use shall not be damaged during the rebinding process.

Refolding of maps or folded inserts shall be avoided wherever possible.

The map or illustration may be set out on a strip of reinforcing cloth or alkaline paper that is compatible with the weight and texture of the insert.

7.3 Stitching

Staples in side-sewn volumes shall be removed in books bound for libraries.

7.4 Sewing Tapes

For the best results in both use and longevity, tapes shall be used on all volumes sewn through the fold by hand. If agreed to by the client, the binder may substitute sewn-in cords.

In general, book blocks less than 20 cm (8 in.) bulk shall be sewn on two tapes; those between 20 cm (8 in.) and 30 cm (12 in.) on three tapes; and those over 30 cm (12 in.) on four or more tapes.

Sewing tapes shall be cotton or linen, no less than 1.25 cm (1/2 in.) wide and shall have no less than 104 warp threads per 2.5 cm (1 inch) and 32 filling threads per 2.5 cm (1 inch). The tensile strength (strip method) of the warp threads shall be no less than 29.5 kg (65 lbs.) and of the filling of threads, no less than 11 kg (24lbs.). (ANSI/NISO/LBI Z39.78-2000)

7.5 Trimming: Case Hard Cover

The trimmed book block of a case bound book intended for library use shall be between 5 mm and 6 mm (3/16 in. and 1/4 in.) smaller than the cover.

7.6 Binder's Boards

The cover boards shall be between 5 mm and 6 mm (3/16 in. and 1/4 in.) larger than the inside pages of the book block. They shall be square, even and cleanly cut. For books less than 21.5 cm x 28 cm (8 1/2 in. x 11 in.) the calliper must be greater than 2 mm (0.080 in.). For books 21.5 cm x 28 cm (8 1/2 in. x 11 in.) and over, the calliper of the binder's board must be greater than 2.5 mm (0.100 in.).

7.7 Lettering and Titles

Suppliers who bind books for library use shall keep records of periodicals and regularly bound material to ensure uniformity of lettering if each series is maintained.

7.8 Reinforcing

A reinforcing cloth strip shall be extended over the end leaves by at least 1.5 cm (5/8 in.).

7.9 Endpapers

Endpapers for books bound for library use shall meet or exceed the performance requirements outlined in Section 3.

In addition, the endpapers shall be pre-manufactured and shall contain three leaves and a reinforcing fabric. The endpaper shall have a basis weight of 120 M (Basis 25 in. x 38 in.), 90 g/m2. The reinforcing fabric shall have a thread count of 80 x 80.

7.10 Cover Material

Case Hard Cover: Unless otherwise specified, the cover material used shall be a pyroxylin impregnated fabric such as Columbia Finishing Mills "Ontario Buckram" or full equivalent.

Soft Flexible Cover: Unless otherwise specified, the cover material shall be cover stock with a minimum calliper of 2.5 mm (0.10 in.).