摘要:
A printing or marking apparatus (20) comprises a movable marking member (26) having at least one marking device thereon, and a stationary heating structure (170) having at least one heating element for maintaining the marking device (26) at an elevated temperature. At least a portion of the stationary heating structure (170) can be exchanged, removed or modified in order to vary the amount of heat applied to the marking device (26). In a preferred embodiment, the removable portion comprises a tubular heat pipe (184) which extends into a hollow marking roll (26), and the heat pipe may be provided in different sizes or in segments which can be added or removed as desired. The disclosed apparatus (20) is of particular utility in connection with ink compositions of the type which are solid at normal room temperatures, and which are rendered liquid or flowable at elevated temperatures.
摘要:
Temperierungssystem zur Temperierung der Oberfläche von Rotationskörpern (6, 107) einer Druckmaschine. Kaltwasser (130) und Feuchtwasser (134) für diese Temperierung werden von einer einzigen Kühlanlage (190) mit einem einzigen Kälteerzeuger (192, 194, 196) gekühlt. Dabei kann wahlweise als Feuchtwasser-Offsetdruck oder als wasserloser Offsetdruck oder mit einer Kombination von beiden gedruckt werden.
摘要:
Eine verbesserte Kühlwalze zeichnet sich unter anderem dadurch aus, dass zwischen verschiedenen Leitungsabschnitten des die Kühlwalze durchsetzenden Kühlmittel-Durchflussleitungssystems (KD) diverse Strömungs-Umlenkeinrichtungen (41, 41'; 141, 141') vorgesehen sind, die so ausgebildet sind, dass der Kühlmittelstrom eine nicht rechtwinklige Strömungsrichtungsänderung erfährt.
摘要:
Provided is a printing plate cylinder to which a sleeve printing plate is detachably attached. In the printing plate cylinder, weight reduction and radiation performance can be improved, and generation of rust can be suppressed. The printing plate cylinder (1) includes a shaft portion (3) rotatable about a central axis (O), a tubular portion (5) formed cylindrically, arranged coaxially with the shaft portion (3), and arranged at a distance from an outer circumferential surface (3a) of the shaft portion (3), and a rib (7) fixed integrally to the outer circumferential surface (3a) of the shaft portion (3) and an inner circumferential surface (5b) of the tubular portion (5) and connecting the shaft portion (3) and the tubular portion (5). An air supply channel (31) is formed so as to penetrate from the outer surface of the rib (7) exposed to the outside to the outer circumferential surface (5a) of the tubular portion (5).
摘要:
The present invention relates to a thermoregulation system of rotating metal cylinders in plants for the extrusion and conversion/transformation of plastic films, wherein heating elements/means are applied to each rotating cylinder (10), wherein said heating elements/means are infrared heating elements (14), and wherein said rotating cylinder (10) consists of a metal tube (11) rotating around a fixed axis (12), rigidly connected to two side plates (13).