Low Cure Powder Coatings: the strategic choice for more efficient plants

Reduce consumption, increase productivity, and improve quality with Low Cure powder coatings

In an industrial environment increasingly focused on energy efficiency and environmental sustainability, adopting low-cure powder coatings (Low Cure) represents a key technical and strategic lever to improve energy performance and reduce operating costs.
Low Cure technology allows for lower curing temperatures, reducing the plant’s energy consumption and optimizing processing times – without compromising coating quality, durability, or performance. It provides an efficient, eco-friendly solution that meets the demands of modern industry.

Chemical-Physical Principles of Low Cure Technology

So, what exactly is Low Cure technology? Low Cure powder coatings – an advanced thermosetting powder technology – are formulated to cure at lower temperatures than conventional products (around 140°C–160°C instead of 180°C–200°C). Low-temperature curing is possible thanks to specially reactive resins and the use of specific catalysts that accelerate crosslinking. The chemical formulation ensures complete curing even under reduced thermal conditions, preserving all mechanical, chemical, and structural properties of the film.

Lowering the curing temperature reduces the energy required to bring the part to the target temperature and maintain it for the necessary dwell time. The thermal process must still ensure complete crosslinking to achieve the desired final performance: optimal adhesion, surface hardness, chemical resistance, and weather durability. Proper design of the thermal cycle is therefore essential to avoid defects such as poor adhesion, opacity, surface irregularities, or incomplete curing.

Thermal Monitoring and Process Control

For Low Cure coatings, monitoring the part temperature is even more critical than in traditional systems. Air temperature in the oven is not sufficient to guarantee proper application: it is necessary to measure the actual substrate temperature using thermocouples or data loggers to ensure that the effective dwell time at the curing temperature is adequate.

Complex geometries, thick parts, or materials with low thermal conductivity may delay reaching the target temperature, compromising curing and, consequently, coating performance. It is therefore recommended to carry out preliminary tests with simulated thermal curves to understand how to correctly apply low-temperature coatings on metals, especially for complex geometries or heat-sensitive materials.

Advantages of Low Cure Powder Coatings

Low-temperature coatings deliver significant benefits, positioning this solution as a smart, sustainable choice from technical, economic, and environmental perspectives:

• Energy efficiency – Reduce consumption by up to 25%, lowering production costs and CO₂ emissions, improving plant energy index and competitiveness
• Increased productivity – Faster thermal cycles and shorter waiting times allow for higher line speeds and more parts processed in the same time frame
• Environmental sustainability – Solvent-free, reduced emissions, and higher recyclability. The coatings are naturally VOC-free and heavy metal-free, contributing to regulatory compliance and operator safety

Technical Considerations for Implementation

To ensure successful application of Low Cure powder coatings, several key factors must be considered:

• Substrate conductivity – For poorly conductive materials, proper grounding or conductive primers are essential. Uniform electrostatic charge distribution prevents coverage defects
• Film melting and flow – Viscosity during melting, especially at Low Cure temperatures, directly affects film leveling and surface finish quality. To achieve optimal results, application parameters such as film thickness, line speed, and spray gun type must be carefully controlled, as each of these factors influences melting behavior and coating flow
• Powder stability – Low Cure formulations may be sensitive to storage conditions (temperature, humidity, handling). Controlled storage is recommended
• Oven thermal distribution – A homogeneous ventilation system (plenum, ducts) prevents cold spots. Oven calibration should be periodically checked
• Auxiliary technologies – Infrared (IR) panels can improve thermal efficiency on complex geometries by focusing heat on specific areas and reducing heating times
• Pretreatment – Essential for adhesion and durability, especially on difficult substrates, and must be compatible with both the coating and thermal cycle

RIPOL LC Range: technical solutions for every need

The RIPOL LC range is designed for those seeking efficiency, quality, and sustainability, offering formulations optimized for various operational conditions:

• Low Cure (LC): 160°C in 10 minutes
• Fast Cure (FC): 150°C in 15 minutes
• Ultra Low Cure (UC): 140°C in 20 minutes (for hybrid coatings)

These solutions provide up to 25% energy savings, high compatibility with sensitive substrates, and superior mechanical and chemical performance. All RIPOL coatings are VOC-free, recyclable, and heavy metal-free, meeting the strictest environmental standards.

Available in smooth, wrinkle, and textured finishes, the RIPOL LC series includes hybrid epoxy/polyester (EP/PE), epoxy, and industrial polyester systems, ensuring mechanical strength, chemical resistance, and aesthetic stability even in aggressive environments. All formulations are fully customizable to customer-specific requirements.

—

Download the brochure for detailed information on RIPOL’s Low Cure products, or contact us today for a personalised technical consultation and discover all the solutions available from RIPOL.