The Kolbus DA-232 is a used book binder — sometimes referred to as a casemaker — manufactured in 2006 and currently located in Poland. Book binders of this type are used in the production of hardcover books, assembling the outer case by bonding covering material to board, folding and turning the edges, and delivering a finished case ready for attachment to a book block. Kolbus is a well-established German manufacturer with a long history of supplying binding and book-finishing machinery to commercial and industrial print and publishing operations.
This machine handles a wide range of case and board sizes. The maximum open case size is 660 × 380 mm, with a minimum of 210 × 130 mm. Fold width runs from 4 to 15 mm and bridge width from 14 to 120 mm, while the folded closed width falls within a narrow 11–14 mm range. The covering material, described as the benefit, accommodates widths from 234 to 690 mm and heights from 154 to 410 mm. Boards (cardboard) can range in thickness from 1 to 4 mm, in width from 95 to 320 mm, and in height from 130 to 380 mm. The spine board (cardboard limit) supports the same 1–4 mm thickness range with widths from 6 to 90 mm, and the roll material (role limit) accepts thicknesses of 0.3 to 0.6 mm and widths of 6 to 90 mm. Output speed reaches up to 85 cycles per minute.
Standard equipment included with the machine is extensive. A Copilot system with a touchscreen interface provides operator control. A cardboard pre-stacking belt enables automatic refilling of the board magazines using shingled feeding, reducing downtime during production runs. A label feeding belt supports both shingled feeding and stack feeding of labels up to 100 mm, and up to three caster rolls can be accommodated. The machine is equipped with a longitudinal and cross cutting device, as well as a safety waste shredder. A device for gluing and changing the roll material while the machine is running allows reel changes without stopping production. Missing-sheet and double-sheet (two-up) detection is active during separation to maintain quality control. Finished cases are delivered via a counter stack delivery system with a roller conveyor discharging to the right.
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