Cyrel round Technical. Technical

Transcription

1 Cyrel round Technical Technical

2 Product Characteristics Cyrel round Thin Thin wall, continuous sleeve Base sleeve and a thin polymer layer Thin plate technology for sleeves resulting in quality benefits Only usable on a compressible adapter Cyrel round Thin requires appropriate handling Cyrel round Classic Thick wall, continuous sleeve Thick plate technology for sleeves resulting in higher robustness Excellent ink transfer on rough substrates Depending on press conditions, this product can be used directly on air cylinders or a hard adapter

3 Cyrel round Sleeve Concept 6-8 bar pressure aircushion slide on sleeve air disconnected sleeve fixed in position Base Mandrel Adapter Sleeve 6-8 bar pressure aircushion slide off sleeve Cyrel round sleeve

4 Cyrel round - Product Specification [mm] Property Criteria Cyrel* round Thin Cyrel* round Classic Basesleeve Material fiber+resin fiber+resin Thickness 0,33 mm 0,68 mm Polymer Thickness Approx mm Approx mm Sleeve Total thickness Approx mm Approx mm Durometer 75 Shore A 66 Shore A Min. circumference 280 mm 290 mm Dimensions Max. circumference 820 mm 960 mm Max. length 1750 mm 1750 mm Min. length contact DuPont contact DuPont Charakteristics Relief 0,7 mm (+-0,1mm) 0,7 mm (+-0,1mm) Tonal range 1-98% 1-95% print-characteristic similar to high durometer thin-plate similar to high durometer 2.54mm-plate LAMS-layer Laser-sensitivity similar to digital Cyrel*-plates similar to digital Cyrel*-plates Optical density air-pressure for mounting tolerances of rawsleeve Pressure ca. 3-4 bar ca. 4-5 bar Flow-rate ca. 12 l/sec ca. 12 l/sec Within a sleeve mm mm Sleeve to sleeve mm mm

5 Cyrel round - Product Specification [inch] Property Criteria Cyrel* round Thin Cyrel* round Classic Basesleeve Material fiber+resin fiber+resin Thickness 0,33 mm / 0.013" 0,68 mm / 0.027" Polymer Thickness Approx mm / 0.074" Approx mm / 0.100" Total thickness Approx mm / 0.087" Approx mm / 0.127" Sleeve Durometer 75 Shore A 66 Shore A Dimensions Charakteristics 11.25" (1/4" circular pitch) 11.25" (1/4" circular pitch) " rep. / 3.600" dia. (diam. 10-pitch) " rep. / 3.600" print-diam. / 36 teeth 32.25" / 129 teeth (1/4" circular pitch) 37.75" / 151 teeth (1/4" circular pitch) " rep. / " dia. (diam. 10-pitch) " rep. / " dia. (diam. 10-pitch) Max. length " " Min. length contact DuPont contact DuPont Relief 0.028" ± 0.004" 0.024" ± 0.004" Tonal range 1-98% 1-95% print-characteristic similar to high durometer thin-plate similar to high durometer 100 mil-plate LAMS-layer Laser-sensitivity similar to digital Cyrel*-plates similar to digital Cyrel*-plates Optical density air-pressure for mounting tolerances of rawsleeve Min. size Max. size Pressure ca. 3-4 bar ca. 4-5 bar Flow-rate ca. 12 l/sec ca. 12 l/sec Within a sleeve ± " ± " Sleeve to sleeve ± " ± "

6 Cylinder Geometries in STORK System Repeat-length diameter air-cylinder Repeat-length diameter air-cylinder Repeat-length diameter air-cylinder air-cylinder-diameters according to Stork-system [mm] [mm] [mm] [mm] [mm] [mm] , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,514 For Stork-sizes of 820mm or more the wallthickness , ,697 changes to 3.25mm

7 Cyrel round Repeat Lengths [inch] 1/4 in. circular pitch BCD (in.) for BCD (in.) for # gear print print in. undercut in. undercut teeth repeat (in.) diameter (in.) Cyrel round Classic Cyrel round Thin Spreadsheet available: Cyrel round sleeve BCD size calculator.xls 1/10 in. diametral pitch BCD (in.) for BCD (in.) for # gear print print in. undercut in. undercut teeth repeat (in.) diameter (in.) Cyrel round Classic Cyrel round Thin Cont.

8 Cyrel round - Wall Thicknesses [mm] Cyrel round Classic sleeve-wall thickness 3.17 mm polymer 2.49 mm base sleeve 0.68 mm Cyrel round Thin sleeve-wall thickness 1.57 mm polymer 1.24 mm base sleeve 0.33 mm 450er Stork, Ø136,989 mm 450er Stork, Ø136,989 mm Repeat 450 mm Repeat 440 mm

9 Cyrel round - Wall Thicknesses [inch] Cyrel round Classic sleeve-wall thickness 1.27 for radial undercut polymer base sleeve Cyrel round Thin sleeve-wall thickness 0.87 for radial undercut polymer base sleeve Ø Ø Repeat teeth Repeat teeth

10 Cyrel round - Adapter Types Cyrel round Thin on compressible adapter Cyrel round Classic on a hard Adapter Polymer compressible Layer PU-layer Polymer Base sleeve PU-layer Base sleeve

11 Cyrel round Press Adapters Compressible print-adapters Compressible adapters enable a reduction of weight, costs and change-over time on the press Inner/outer diameters, airholes, notches etc. are equivalent to the hard bridge-adapters They have a compressible top-layer. The functionality can be compared to a compressible tape, but they can be used for many print-runs The compressible adapter is a MUST for printing with Cyrel round Thin The print-characteristic can be adjusted to the press with different foam-hardnesses (e.g. soft, medium and firm)

12 Cyrel round Press Adapters Hard bridge-adapters Adapters enable a reduction of weight and cost vs. steel-cylinders In most cases hard adapters are just used for imaging blanks on the CDI The inner diameter matches the outer diameter of the CDI s steel-/carbon-mandrel, the outer diameter corresponds to the inner diameter of the sleeve The adapter has got airholes on the edge (usualy 4 to 8 depending on repeat) guiding the air from the airholes of the cylinder to the surface of the adapter It should have additional airholes on the face depending on lenght and repeat The adapter should have a interlock to lock the adapter on the mandrel s registerpin, otherwise the adapter could slip when mounting the printform In case of simple designs and good press-conditions the hard bridge adapter can be used as a print adapter in combination with Cyrel round Classic

13 Cyrel round - Print Characteristics Cyrel round Thin vs. Classic output (%) Classic 300m/min, cyan 133lpi Thin 300m/min, cyan 133lpi linear example data (%) Cyrel round Classic prints with a higher dot gain compared to Thin

14 Cyrel round - Handling Recommendations When setting the sleeve start with the upper edge of the adapter/air cylinder, not the lower edge

15 Cyrel round - Handling Recommendations Apply only light pressure when setting the sleeve at the adapter/air-cylinder to avoid nicks, kinks, cracks or other damage to the sleeve edge.

16 Cyrel round - Handling Recommendations Please apply pressure only from the side during mounting of the sleeve. Otherwise the sleeve will be squeezed and can be damaged.

17 Cyrel round - Handling Recommendations The adapter/air-cylinder should have a chamfer to assist during mounting, otherwise mounting is nearly impossible

18 Cyrel round - Handling Recommendations If an adapter is used it should be insured that it is fixed properly for sleeve mounting and demounting. For example, a pin-notch locking system as shown below.

19 Cyrel round - Handling Recommendations The compressed air flow system is critical for smooth mounting and demounting. Main influencing factors are air pressure and flow rate The hole position and hole pattern on adapter/air-cylinder must provide adequate air flow under the sleeve. Mounting air pressure is 4 8 bar ( psi) and volume of not less than 12 liters/sec. (0.42 cubic ft./sec.) The inner diameter air lines should be not less than 6 mm. This assumes adapter/air cylinder diameter tolerance of -0, mm (-0, in.). If the mounting requires too much force, this can result in a (reversible) torsion of the sleeve. The surface of the adapters/air cylinders should be clean. The air supply should be dry and clean.

20 Cyrel round - Repeat Lengths Available repeats are based on the Stork-System with increments of 10 mm (example 340 mm, 350 mm...). Advantages Open system within the industry standard Cost advantages due to a limited number of necessary toolings Simplified communication (only type and repeat is necessary) Options for variable print lengths (not matching 10mm steps) Gearless presses allow to shorten or elongate the repeat on press Vary the thickness of the polymer-layer while maintaining the standardized inner diameter

21 Cyrel round - Repeat Lengths Mounted on the same Stork-Adapter a Cyrel round Thin sleeve prints a 10 mm shorter repeat vs. a Cyrel round Classic sleeve The Stork-System is based on a wall thickness of 3,125 mm Cyrel round Classic (wall thickness 3,17mm) is directly related to the Stork-size Cyrel round Thin (wall thickness 1,57mm) is indirectly related to the Stork-size

22 Cyrel round Logistic robust single sleeve box example for storage area

23 Cyrel round - Sleeve Storage Requires the same conditions as the storage of plates Should be stored either vertical or horizontal in the special transport box No limitations regarding storage time for printed sleeves under appropriate conditions

24 Cyrel round - Sleeve Cleaning The rules an recommendations for cleaning of Cyrel photopolymer plate cleaning also apply to Cyrel round sleeves We recommend a mixture of Ethanol (~90%) and Ethylacetate (max. 10%) For manual cleaning a brush with natural bristles should be used Plastic bristles tend to brittle after time and often show sharp edges After cleaning the sleeve should dry before storage

25 Cyrel round - Sleeve equipment Cyrel round main exposure unit Cyrel round Inliner for a fully automated processing, drying and finishing

26 Cyrel round Sleeve equipment floor plan example

27 Du Pont de Nemours (Deutschland) GmbH DuPont Imaging Technologies, Hugennottenallee 173, Neu-Isenburg, Germany Copyright 2008, Du Pont de Nemours (Deutschland) GmbH Published and Recorded in 2008 by: Packaging Graphics European Marketing Info: Recorded in Europe All rights reserved worldwide. No part of this publication may be reproduced or transmitted in any form, or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without the prior written permission of Du Pont de Nemours (Deutschland) GmbH. The DuPont Oval, DuPont TM, The miracles of science TM and Cyrel DuPont or its affiliates. are registered trademarks or trademarks of

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