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Sleeve for printing cylinder, printing machine and method of replacing inner peripheral layer of sleeve for printing cylinder

Provided is a offset web press, particularly a variable cutoff type web press, which can reduce costs of replacement of a sleeve for a printing cylinder, which is deteriorated through printing operation. The sleeve for a printing cylinder, which is cylindrical and which is fitted on the outer periphery of a base shaft roll provided on the body side of the printing machine, is composed of an inner peripheral layer having a plurality of layers at least one of which is expandable or contractible with respect to a radial load, and an outer peripheral cylinder closely fitted on the outer peripheral surface of the inner peripheral layer, the inner peripheral layer and the outer peripheral layer being formed separate from each other so as to be separatable from each other. With this configuration, in order to replace the sleeve with the inner peripheral layer being deteriorated, the inner peripheral layer can be removed from the outer peripheral layer and be replaced with new one while the outer peripheral layer can be used as it is, thereby it is possible to greatly reduce the replacement costs of the sleeve, in comparison with a conventional sleeve which has been replaced with new one in its entirety.
Owner:MITSUBISHI HEAVY IND PRINTING & PACKAGING MACHINERY +2
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