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CoLibri is a commercial book covering system commonly used in libraries to create custom-fitted polyethylene book covers to protect and preserve paperback, hardcover, and/or red rotted leather bindings. This system requires a special CoLibri welding machine that heat-seals and trims the CoLibri covers together around the book (see Fig. 1).
CoLibri covers are:
Most often used by CCH to secure publisher's jackets over contemporary hardcover books.
Made from durable, non-toxic, water resistant, and 100% recyclable polyethylene material.
Transparent and flexible, and can be easily removed or replaced without damaging the book.
Available in three standard sizes that can be adjusted to fit a wide range of books.
Fig 1. - A standard CoLibri welding machine. Illustration by Jake Shonborn.
Constructing Colibri Covers
Choose a standard sized CoLibri cover that is slightly larger than the size of the book.
Insert the back book cover into the right sleeve of the CoLibri cover, and align the bottom edge of the book with the bottom of the sleeve.
Slide the excess sleeve material under the sealing bar and align the top of the book with the welding line (illustrated by the green box).
Hold down the levers on the sealing bar to weld and trim off the excess sleeve material.
Following the procedure in Step 1, weld and trim the excess sleeve material at the book's fore-edge.
Carefully open the book to insert the front cover into the left CoLibri sleeve.