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Anti-Set-Off Powder
Water Based Emulsion
Coatings |
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Rusell-Webb manufactures
more than 16 grades of Anti-Set-Off powder. All materials are carefully
selected, and the processing methods ensure the final products have good
flow and even particle size. Choosing which grade of Anti-Set-Off powder
to use is important. The correct powder will reduce the chance of press
problems, and improve working conditions. There are three main types of
powder:
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Standard Powders
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Soluble Powders
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Coated Powders
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| Standard
Powders |
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| These
Powders are manufactured from a base of food grade starches and additives
which are approved for food contact use. They consist of arrange of powders
of increasing particle size from 15 microns through to 70 microns.
The
15-25 micron powders are suitable for lithographic or letterpress printing
on paper. While the 50 and 70 micron powders are designed for carton printing |
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| Grades
Available |
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| Grade
1.5S |
15
micron |
| Grade
2 S |
20
Micron |
| Grade
2.5 S |
25
Micron |
| Grade
5 |
50
Micron |
| Grade
7 |
70
Micron |
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| Soluble
Powders- V range |
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| The
V range of powders are made with soluble base materials to aid multi-pass
printing. When more than one pass through the press is made, the powder
applied during the first pass will be washed off during the second, and
so on. Soluble powders help reduce the build up of powder on the blanket
and can be used successfully before varnishing and laminating. A full washing
pass through the press may be necessary to ensure the complete dissolving
of the last application of powder. |
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| Grades
Available |
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| Grade
2 V |
20
Micron |
| Grade
4 V |
40
Micron |
| NB:
Avoid using these powders with infra-red units |
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| Coated
Powders- R range |
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| Coated
powders are starch based but have been micro-encapsulated with a special
resin. they are free flowing, resistant to damp and give the work an extremely
smooth finish. These powders 'wet out' in oil inks and are thus suitable
for two-pass general litho work, and single pass four colour work. |
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| Coated
powder- R range |
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| Grade
1.5 R |
15
micron |
| Grade
2 R |
20
micron |
| Grade
2.5 R |
25
micron |
| Grade
3 R |
30
micron |
| Grade
5 R |
50
micron |
| Grade
6 R |
60
micron |
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Water
Based Emulsion Coatings |
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Rusell- Webb manufacture
a full range of Clearcoat water based coating for a wide variety of applications.
All Clearcoat based
coating have the following features:
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Non-yellowing
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Virtually odourless
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Excellent Scuff resistance
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Rapid Conversion possible
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Good uniform slip level
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A wide variety of finishes
available
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Gluable and Foil Blockable
unless specified
These are two distinct
products type: |
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Roller applied Clearcoat
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Ink Duct Applied Clearcoat
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| Clearcoat
- Roller Applied |
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| These
coatings are designed to be applied by any of the following methods: |
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| Dedicated
Coated Units |
As
supplied by all major press manufacturers |
| Add-on
Coated Units |
Epic,
Dahlgren, etc. |
| off-line
Varnishing Machines |
Stienmann,
Gull, etc. Most Varnishing machines can be adapted to use clear coat |
| Press
Damping Systems |
instructions
to modify the press are available |
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following are some of the products available from the Clear coat range: |
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| High
Gloss |
Heat
Resistant |
| Satin |
Water/
Grease resistant |
| Matte |
Alcohol
Resistant |
| Very
Fast drying sealer |
Blister
pack |
| Primer
for UV varnishing |
Calendering |
| Sealers
for meatless Papers and Boards |
Playing
Card |
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| Clear
coat - Duct Applied |
| These
Coatings are suitable for application through the ink duct of an offset
or letterpress printing machine |
| As
these products are water based the damping rollers should be removed and
the coating applied by the means of a dry plate. Full instructions with
regards to the setting up of the press correctly are available |
| Finishes
available |
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High Gloss/ Satin/ Matte |
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