Back insert
Back insert is a technical term from bookbinding . The back insert is located between the front and back covers of the book cover and consists of gray cardboard ( Schrenz ), cardboard or waste paper. The spine insert is used among other things to back sleeves or on the outside of the spine insert before coating wrong frets to fix.
Due to the low material thickness of the spine insert, it is possible to produce books with a round spine both manually and by machine in a book line . For books with a straight spine, thicker cardboard can also be used as the spine insert.
The width of the back insert for a straight back is determined as follows:
- Place the two cardboard covers separately against the book block, the distance should in any case correspond to the fold width of about 8 mm, and measure the length with the ruler. (2 × cardboard thickness + book block height)
- In the case of a round spine, the cardboard is also positioned separately (normally the width of the fold) and measured along the rounded spine. For book covers with thicker cardboard (> 3 mm), the cardboard thickness of the spine insert must be taken into account.
literature
- Fritz Wiese: The book cover: A working customer with work drawings . 7th edition, Schlüter, Hannover 2005, ISBN 3-87706-680-1
Individual evidence
- ^ Wiese, p. 261