With the Muller Martini/VBF Collibri, the bookbinder can glue-off thread-sewn books in the widest variety of versions to meet customer needs…
The right Collibri version for every need
With the Collibri, the bookbinder can glue-off thread-sewn books in the widest variety of versions. He simply uses dispersion glue, hotmelt or PUR and applies glue once or twice. To accommodate every need, there is the Collibri backgluing machine from Muller Martini/VBF, available in two different lengths, with one or two exchangeable gluing stations.
The Collibri, with one gluing and one lining station, is available in two versions: one for melting adhesives (hotmelt and PUR) and one for dispersion glue.
The Collibri for hotmelt application is the compact backgluing machine for manufacturing simple products with lining. More and more frequently, books are glued-off with PUR instead of hotmelt, as PUR achieves an exceptional shelf life and excellent openability. In order to glue-off with PUR, the Collibri for hotmelt application is additionally equipped with a PUR gluing station and pre-melting device. Thanks to a separate pre-heating station with exhaust, changing between hotmelt and PUR goes very quickly.
The second version is intended for applications with dispersion glue. This gluing type manufactures book blocks of very good quality and excellent layflat characteristics. Here, a drying and pressing machine follows the Collibri in order to completely dry the book block before further processing. The block spines are quickly and efficiently dried on a four-meter long infrared drying section, with automatic adjustment and circulating fan.
All Collibri variants for one-time glue application can be equipped with a pair of pressing rollers before the gluing station. This can eliminate any spine swelling that is present.
Collibri with two gluing stations The Collibri with two gluing stations - with infra red drying in between - and a lining station allows for versatile and flexible applications. Various gluing processes can be applied with this version, through use of the exchangeable glue carriage: In the case of the primer-hotmelt process, dispersion glue is first applied to the book block spine. The book blocks are then efficiently dried on the newly developed infra red drying section with circulating fan until they are ready for trimming, and then additionally glued-off with hotmelt. This type of gluing offers a wide variety of application possibilities and represents excellent product quality.
With the two-shot Collibri, the bookbinder also has the option of gluing-off twice with dispersion glue. To do so, the second gluing station is exchanged, with only single manual move. With the double application of dispersion glue, the bookbinder can achieve the highest quality. This gluing process produces first-rate products, at any desired book block thickness. When changing from dispersion glue to hotmelt, the hotmelt gluing station can already be pre-heated while still producing with dispersion glue. Naturally, just one of the two gluing stations can also be used on this Collibri, if desired. The book blocks then receive one glue application, which can be dispersion adhesive, hotmelt or PUR (with the corresponding equipment).
In the Collibri, as a unique machine on the market, the liner is automatically trimmed from a wide reel cross-wise to the book block, positioned and pressed from below and from the side (naturally in all of its sizes). The Collibri's lining station is a true advantage, because the rolls last for a long time – with a block thickness of 20mm, a 300-metre roll lasts for 6,000 book blocks. This means true time savings and increased production output.
With the Collibri, the bookbinder can glue-off thread-sewn books in the widest variety of versions. He simply uses dispersion glue, hotmelt or PUR and applies glue once or twice. To accommodate every need, there is the Collibri backgluing machine from Muller Martini/VBF, available in two different lengths, with one or two exchangeable gluing stations.