Printing – Antismut device – Cleaners
Reexamination Certificate
1999-04-13
2001-12-11
Hilten, John S. (Department: 2854)
Printing
Antismut device
Cleaners
C101S425000
Reexamination Certificate
active
06327977
ABSTRACT:
The invention relates to a cleaning apparatus for a backing of a printing machine, in particular a textile printing machine, wherein the cleaning apparatus is provided with at least one rotor with rotor bristles for cleaning the backing.
With printing machines, in particular textile printing machines, a backing is used as an underlay for the products to be printed, for example a textile web, which is preferably composed of fibre-reinforced rubber or plastics. The product is stuck, preferably with a water-soluble (or non-water-based) glue onto the backing. When the product is removed, fluff and remnants of glue remain on the backing. In order to remove these and to prevent a build up of fluff, glue and dye, it is already known to clean the backing. A known cleaning apparatus is provided, in the area of a guide roller for guiding the backing, with an irrigation and a sponge extending over the entire width of the backing, which together with the irrigation makes a pre-wetting and a process of softening the water-soluble glue possible. Following this there is located a brushing mechanism with brushes and with a relatively small diameter, for example in the order of approximately 25 cm.
In order to improve the cleaning action, the invention proposes that the rotor bristles are configured as limp, flexible strips—as known per se—which in operation strike and wipe along the backing along a part of their length due to centrifugal action.
Rotors with limp, flexible strips are known in principle per se, and are used, for example, in automatic car washes. “Limp, flexible” is understood as strips which are of relatively soft material and therefore hang down limply under their own weight when the rotor is inoperative. Only by means of the rotational movement of the rotor and by means of centrifugal action do the strips project radially outwards from the rotor, before they meet with the backing. Because of the relatively large diameter of such a rotor with limp flexible strips, the strips strike the backing with a high peripheral speed and thus also remove stuck on fluff, glue remnants and dye remnants as well as other soiling (whip effect), wherein the rubbing along, that is to say the wiping of the strips along the backing is also important for the cleaning effect.
The limp flexible strips can, for example, have a circular or rectangular profile, and advantageously have a large length such that the standard distance of the axis of rotation of the rotor from the backing is approximately 30 to 70% of the length of the strips. It is advantageous when the flexibly configured rotor bristles are composed of mono-filament, multi-filament, twisted and/or rough surfaced strips.
Further advantages and details will be explained in more detail with reference to the following description of the drawing.
REFERENCES:
patent: 2648088 (1953-08-01), Bailey
patent: 2858576 (1958-11-01), Rose
patent: 3737940 (1973-06-01), Moestue et al.
patent: 3942889 (1976-03-01), Kurita et al.
patent: 4217819 (1980-08-01), Von Tluck et al.
patent: 2040811 (1980-09-01), None
U. Rutz: “Das okologishe Umfeld von Druckmaschinen”, TEXTILVEREDLUNG, vol. 30, No. 3/4, pp. 79-81.
Hilten John S.
Lorusso & Loud
Nguyen Anthony H.
Peter Zimmer KEG
LandOfFree
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