STP-SL Double layer Thermal CTP Plate

STP-SL Double layer Thermal CTP Plate has high chemical resistance when printing. Designed to provide printers with excellent prepress productivity and high run lengths without post-baking. With high sensitivity and resolution, it is suitable for reproducing up to 20 μm FM random screens. STP-SL is suitable for a variety of printing such as packaging with or without UV inks, metallic or conventional inks, and can achieve long run lengths without post-baking.
STP-SL Double layer Thermal CTP Plate
Key Features
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Holds the finest detail without the need to back mask
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Quick wash out
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Requires minimum impression settings, giving good balance between solids and screens
Advantage

High sensitivity / high productivity.

High stability in tonal reproduction.

Long runs on press without post-baking.

Resistant to UV inks and solvents.

Low consumption of developer and replenisher.

High compatibility with different developers.

Technical specifications
Type Positive working thermal
Substrate Electromechanical grained and anodized aluminium
Coating Color Blue
Plate Gauges 0,15 / 0,15 P / 0,20 / 0,30 / 0,40 mm
Application Sheet-fed and Coldset / Heatset web presses
Laser Characteristics IR - Infrared laser
Spectral Sensitivity 800-830 nm
Energy Required 100-110 mJ/cm²
Screen Reproduction 1 - 99% @ 400 l.p.i.
Resolution Up to 5080 d.p.i. and FM screen 20 µm
Safelight Daylight handling
Development Use Strong developers and replenishers
Processing Conditions Temperature: 23 ±1℃
Dev. Time: 30±5 seconds
Finishing Gum Use Strong Gum for standard process
Run Length 150.000 impressions – UV ink
400.000 impressions – Conventional ink
Shelf Life 18 months
Storage Conditions Temperature: Up to 30˚ C
Relative Humidity: Up to 70%

*Run-Length varies with its printing conditions and imaging content

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Latest updates
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Aug 06,2026
Packaging printers face a fundamental choice when selecting printing plates: hard plates or flexible printing plates? The answer depends on your substrates, run lengths, design complexity, and press c
Jul 29,2026
Packaging printers face a unique set of demands: short runs, frequent design changes, a growing variety of substrates, and pressure to switch to water-based inks. Traditional printing plates often str
Jul 20,2026
A pressroom that routinely loses plates to edge damage, light fogging, or developer contamination is not suffering from a manufacturing defect in most cases. The culprit is almost always found upstrea
Jul 13,2026
A flexo plate that loses fine highlight dots or develops surface cracking after a few thousand impressions is rarely defective from the factory. In most cases, the damage began long before it appeared

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