Inspection solutions for security paper

BankSTAR PM – WS is ISRA SURFACE VISION’s answer to the particular challenges of optical inspection in the wet section of the paper machine. The system is engineered for operation in the typical rough-and-tough environment of a paper mill, with its usually high levels of humidity and dust. BankSTAR PM – WS is especially designed for the inspection and measurement of all kinds of security threads - including window threads with varying window sizes, flip thread detection and thread elongation assessment -, as well as the detection of dirt, foreign objects and other paper defects that can be optically detected as early as when the pulp is collected by the sieve in the wet section of the paper machine.

BankSTAR PM is installed at the dry end of the paper machine and detects the overwhelming majority of critical paper defects before slitting and cutting of the substrate. Inspecting the substrate at this point in the production chain is of paramount importance for production efficiency and quality assurance.

BankSTAR PM’s inspection channel in transmission checks all types of watermarks, e.g., artisanal registered/localized high-resolution watermarks, edge-/cornerstone watermarks, e-types, skew marks and cutting marks, and measures sheet length, width and geometry.

BankSTAR OV is specifically engineered for the assessment of the integrity and quality of objects and features applied in the converting steps of the security paper production process. The “OV” configuration of BankSTAR performs high-precision inspection tasks in the converting or “OV” line ‒ otherwise known as ”finishing line” or ”application line” ‒, with special focus on the application of holographic objects, iridescent print, primer print and backside foils.

BankSTAR OV is capable of performing extremely complex measurement and inspection tasks, such as checking secure window features with transparent or opaque holograms, where the hole punching, the backside foil and the centered positioning of the hologram feature within the window, as well as its integrity, must be verified.

BankSTAR CC is the most versatile and complete of all BankSTAR configurations. Housed in its own vibration-absorbing frame with high-precision rollers in front of the knife at the cross-cutter or sheeter, BankSTAR CC can inspect virtually any feature and detect virtually any defect type in security paper: dirt/spots, thin areas, wrinkles, security threads, holographic features, iridescent printing, etc.

The job of BankSTAR CC is final quality assurance and allocation of sheets to the good, doubtful and bad piles by sending the corresponding output signals to the cross-cutter. Hence, BankSTAR CC enables security paper mills to deliver 100% inspected quality to their customers.