Can you tell, if a book is case- or perfect-bound?

It is only one of the tasks of every printing house to print paper using state-of-the-art printing machines. It is as important to provide the clients with a wide spectrum of follow-up processing methods to choose from, since without them, the printed material is “only” a paper printed with something. At the same time, machine binding offers literally a symphony of advanced technologies.

In this edition, we will introduce you to two basic types of bookbinding – V1 and V2. Each one of these is suitable for something else and each one naturally has its limitations.

V-one

For V1 perfect (soft) binding, we have two complete automatic lines in the LOGIK company at our disposal and therefore, we have a sufficient capacity in this respect for any number of print-runs. It is a nice sight to see the line working at full capacity. From the individual towers, the loaded blocks of the sheets of paper are removed and they are collated into each other, so that they can arrive into the wiring machine, which will fit them with staples in a fraction of a second. These might look like from an office stapler, but know, that the speed of stitching is much, much faster this time. It is significantly more effective to commit oneself to technology than to use manual stitching in this case. V1 or saddle stitching using staples is the most wide-spread type of perfect binding. Individual parts of the publication, that is, the sheets of paper, are collated into each other. For this purpose, the so-called collating line is used. The block of paper sheets is inserted into a single-groove envelope from a stiffer kind of paper (or according to the assignment) and it is stitched in the spine by staples. The other three pages are then cropped and the brochure is finished. Flat staples can be substituted by loop staples if the print is intended to be put into the file.
The V1 binding also has its standard, specifically ON 88 3750. The standard states that the maximum allowed range for perfect binding of the V1 type is 60 sheets at the maximum (120 pages) using paper with the grammage of max 70 g/m2. In higher grammages, it is 44 sheets (88 pages). The number of stitching staples is governed by the format in accordance with the standard: - up to A6 1–2 staples, - A6 to A5 2–3 staples, - for larger formats 2–4 staples.
Owing to the quality improvement of available materials and production processes, these values do not constitute a dogma anymore, and it is possible to exceed them.

V-two

For the paperback book binding V2 we even have one of the fastest machines that is in operation in the Czech Republic at our disposal. The capacity of this line is the hardly conceived 12.000 pc/h, that is, about 3.5 prints per second. And how does V2 look like? The block of paper sheets is assembled from folders or individual sheets of paper collated after one another. After gentle de-milling, these are glued together in the spine using a dispersed fusible or PUR glue and inserted or hung into a soft paper cover and then cropped on three sides.
Using V2 adhesive binding is ideal, for example, for multi-sheet magazines and catalogues, including luxurious ones. As optimal volume, the range starting with 88 inner pages is considered. Apart from the traditional V2 binding, there are also special types of binding, for instance, fitted with a hard cover, V2 with a flap and others.

Folding

However, attractive company and other prints can be created even without the use of binding. The answer is folding and it consists in – correct – folding of a sheet of printed material. Folding usually follows as the first follow-up bookbinding operation after the printing. On a folding machine designed for the B1 format, we are capable of processing up to 14 folds with the input width of up to 820 mm depending on the grammage of the material. Probably the most well-known commodity made from folded paper are touristic and other maps with various formats and purposes. Anyone, who has ever held a touristic map in their hand, knows, that folding it back into a pocket format usually requires several attempts. And yet, in fact, it seems so easy. At least when it is done by the folding line, of which we have eight in the LOGIK company at the ready. But a map is not the only folded format. There is a great number of variants – for example, for menus, various leaflets, invitations, announcements,…

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