| Printing Products Home|  Dampening Sleeves Home |  Technical Literature | Sample  Request | Material Safety Data Sheets |

Rogers Dampening Sleeves

Product Information

Description

The Rogers Dampening Sleeve is a non-woven, seamless, water shrinkable, fibrous composite covering for the dampening roller or form roller of an offset printing press. It absorbs, stores and meters fountain solution from the vibrator roller to the plate.

The Rogers Dampening Sleeve consists of water-absorbing synthetic fibers that maintain a reservoir within the sleeve. The sleeve releases a small amount of solution providing minimum moisture to the plate.

Installation
To prepare the Dampening Sleeve for installation, follow this procedure.

Roller Measurement:

Check dampening form roller diameter using a vernier periphery tape correct to 0.001 inch (0.025 mm).

Mounting the Sleeve:

Remove dampening form roller from the printing press. Make sure roller is free of ink particles and glaze. Hold the roller in a vertical
position and slip the sleeve over the roller.

 

 

 

 

 

01.jpg (7398 bytes)


Shrinking the Sleeve:

Soak the sleeve for 3 minutes in 80° - 100° F (27° - 38° C) water. Cooler water will slow shrinkage rate. Hot water over 100° F
(38° C) can cause shredding. Trim any excess sleeve to 1/4 inch (6.35 mm)
overhang of the roller.

02.jpg (4198 bytes)


Press Installation
Install the dampening sleeve following the press manufacturer's instructions. Be sure to:

  • Wet the dampening sleeve mounted on the dampening form roller to prevent damage when handling
  • Keep the dampening sleeve clean
  • Seat and lubricate roller bearings

Setting Form Roller
Make all dampening form roller adjustments with the dampening sleeve
thoroughly wet.

Setting Vibrator to Form Roller
Insert 1 inch (24.4 mm) wide strips of 0.004 inch (0.1mm) film or metal between the dampening form roller and the vibrator. Place the strips at both ends and the center of the rollers. Check for a firm, even pull on the strips. Adjust if necessary.

Setting Form Roller to Plate
Insert the 0.004 inch (0.1 mm) strips of film or metal between the dampening form roller and the plate at both ends and center.

Drop the dampener against the plate and check for a "just snug" uniform pull on all three strips. Adjust if necessary.

Running Adjustment
Adjust the dampening form roller for a slight bounce at each end of the roller shaft as the dampener enters and leaves the plate cylinder gap.

Cleaning
Before handling or using any chemical, be sure to read the Material Safety Data Sheet for health hazard data, precautionary information and suggested first aid.

To clean the dampening sleeve on press:

  • Apply Rogers Cleaner Conditioner to a clean, dry cloth and thoroughly wipe the
    dampening sleeve.
  • Wipe the dampening sleeve with a water-dampened, clean cloth to remove excess
    Cleaner Conditioner.

To clean the dampening sleeve off press:
Lightly soiled dampening sleeves

  • Apply cleaner conditioner to a clean, dry cloth and thoroughly wipe the dampening sleeve.
  • Rinse thoroughly with water.

Heavily soiled dampening sleeves

  • Apply a non-oily solvent to a clean, dry cloth and thoroughly wipe the dampening sleeve.
  • Apply cleaner conditioner to a clean, dry cloth and thoroughly wipe the dampening sleeve.
  • Rinse thoroughly with water.
Removal

To remove a worn dampening sleeve, wet the sleeve with water. Cut the sleeve
edge and tear the sleeve from the roller in a spiral pattern. An alternative
method for dampening sleeve removal is to slit the sleeve lengthwise with a "roofing knife". Be sure the cutting edge of the knife is recessed to avoid
cutting the roller.

 

stretch.gif (1541 bytes)
Roller Specifications

Durometer: 30-40 Shore A2 for rollers with 1/4 inch (6.35 mm) or more rubber thickness.

Rubber Compound: Formulated to obtain oil, water, solvent and compression-set resistance
to meet operating conditions.

Eccentricity: 0.003 inch (0.08 mm) maximum.

In-Roll Variation: 0.003 inch (0.08 mm) maximum.

Surface: "As ground" finish providing a light texture or grain to the roller surface.

For the sleeve to fit properly, the dampening form roller must be ground to the diameter listed
for the sleeve code in the Roller Diameter Table.

All trademarks listed above are registered trademarks of their respective companies.

 

Roller Diameter Table

Sleeve
Code		 Inches
(+/-0.004)		 Millimeters
(0.10)		 Sleeve
Code		 Inches
(+/-0.004)		 Millimeters
(0.10)

130
172
185
188
197
205
210
222
230
247
251
260
272
280
285

1.310
1.735
1.860
1.890
1.985
2.065
2.110
2.235
2.310
2.485
2.527
2.615
2.740
2.815
2.865

33.27
44.07
47.24
48.01
50.42
52.45
53.59
56.77
58.67
63.12
64.19
66.42
69.60
71.50
72.77

297
303
313
322
335
347
360
378
391
397
413
428
447
497

2.990
3.051
3.145
3.240
3.365
3.490
3.615
3.801
3.925
3.990
4.149
4.300
4.490
4.990

  75.95
  77.50
  79.88
  82.30
  85.47
  88.65
  91.82
  96.55
  99.70
101.35
105.38
109.22
114.05
126.75

 

Rogers Corporation, High Performance Foams Division
One Technology Drive, Rogers, CT 06263-0217
Phone: 860 774-9605/ Fax: 860 779-5780/ Site Feedback:
Copyright ©2006 Rogers Corporation, All Rights Reserved - Disclaimer - Privacy Policy - Security Statement 
 ISO 9002 Registered Firm

The world runs better with Rogers.™