PURETE

SARL SOGIDIS (Algeria) Adopts PURETE Automated Roller Coating Line for High-Volume Two-Tone MDF Finishing


1. Client Overview & Challenge

SARL SOGIDIS, a leading wood importer and processor in Algeria, specializes in manufacturing high-quality wood-based panels for furniture, cabinetry, and architectural decoration. Prior to upgrading, the company relied on traditional manual brushing/painting methods, which created three critical pain points:
  • Low Efficiency: Labor-intensive, multi-step painting processes limited daily output to just 300 panels (1220×2440mm), failing to meet growing market demand.
  • Inconsistent Quality: Manual application led to uneven film thickness, color variation, and poor scratch resistance, undermining product value.
  • Unsafe & Unstable Environment: High VOC emissions from solvent-based paints created harsh working conditions, while material waste drove up operational costs.

To resolve these issues and scale production, SARL SOGIDIS partnered with PURETE to deploy a fully automated two-tone roller coating line tailored to their MDF and multi-substrate finishing needs.



2. Solution: PURETE Automated Two-Tone Roller Coating Line

The custom-configured line features a robust, high-precision design optimized for large-format panels, combining mechanical stability, automation, and eco-friendly coating compatibility.

Core Technical Specifications


ParameterSpecification
Total Line Length54,000 mm
Max Panel Size1220 × 2440 mm (standard MDF/large-format boards)
Daily Production CapacityUpgraded from 300 → 800 panels/8-hour shift
Line Structure18mm thick steel welded frame for extreme stability
Drive SystemSiemens high-efficiency motors paired with RV/hyperbolic gear reducers
Key ComponentsAutomated loading/unloading station, brush cleaner, double roller coaters, IR preheating, UV curing tunnels, air knife cleaning, turnover conveyor, dual-station unloading system
Compatible CoatingsUV coatings, water-based UV, water-based paints, EB coatings, PU coatings
Supported SubstratesMDF, OSB, gypsum board, calcium silicate board, magnesium oxide board, honeycomb panels, metal sheets
Surface FinishesClear coats (to showcase wood grain), solid color paints; full/half/open pore finishes; matte, semi-gloss, and high-gloss effects

3. Key Advantages & Performance Improvements

🔹 Dramatic Efficiency Boost

The continuous, automated workflow eliminates manual bottlenecks, increasing daily output by 167% (from 300 to 800 panels). The integrated IR and UV curing modules enable in-line drying, cutting production lead times from days to hours.

🔹 Precision & Uniformity in Every Coat

  • Dual roller coaters deliver ±0.02mm control over coating thickness, ensuring 100% consistent color, film depth, and gloss across all panels.
  • The line supports simultaneous base and top coat application with perfect separation, enabling high-quality two-tone finishes in a single pass.
  • Finished surfaces boast superior scratch and abrasion resistance, meeting the strictest quality standards for furniture and architectural applications.

🔹 Significant Cost & Labor Savings

  • Reduces labor requirements by over 60% (only 3–5 operators needed for the full line).
  • Minimizes coating waste by up to 30% compared to traditional methods, lowering raw material costs.
  • Eliminates rework from uneven application, reducing material and time waste.

🔹 Eco-Friendly & Safe Production

Compatible with water-based and low-VOC UV coatings, the line meets Algerian and international green production standards, improving workplace safety while reducing environmental impact.

🔹 Built for Long-Term Stability

  • 18mm steel welded structure with cast iron integrated bases ensures zero vibration during continuous operation.
  • 2.5T load-bearing lifting seats maintain precision under full load, while Siemens motors deliver reliable performance in high-demand environments.

4. Results & Future Outlook

Since deployment, the PURETE line has transformed SARL SOGIDIS’s production capabilities:
  • Scaled high-quality panel output to meet rising demand from Algerian furniture manufacturers and construction projects.
  • Elevated product quality to compete in premium markets, with consistent finishes that meet global standards.
  • Reduced operational costs while creating a safer, more sustainable workplace.
SARL SOGIDIS now looks to expand its product range with new finishes and substrate options, leveraging the line’s flexibility to serve more customers and drive innovation in Algeria’s wood processing industry.



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阿尔及利亚辊涂-MDF双色印刷

FAQ

Q1: How Does a Roller Coating Machine Work?

roller coating machine operates by transferring liquid paint or coating material evenly onto the surface of a workpiece through a controlled roller coating process.

During operation, the paint is poured between the feed roller and the coating roller. As the rollers rotate, the coating material is evenly distributed across the roller surfaces. The workpiece is then conveyed through the roller coating conveyor system, where the coating roller presses the paint onto the panel surface. This controlled pressure ensures uniform paint transfer, completing the panel surface coating process with consistent thickness and finish.

This working principle makes roller coating machines ideal for flat panel coatingdecorative board finishing, and high-efficiency industrial coating applications.

Q2: How Many Types of Rollers Are Used in a Roller Coating Machine?

roller coating machine typically consists of several types of rollers, each serving a specific function in the roll coating production line. These rollers can be categorized as follows:

Coating Rollers

Coating rollers are responsible for transferring paint or coating material onto the panel surface. Common types include:

  • Rubber rollers

  • Silicone rollers

  • Sponge rollers

  • Laser-engraved rollers

  • PU rollers

  • Soft rollers (extra-soft silicone rollers)

Different coating rollers are selected based on paint typecoating thickness, and surface finish requirements.

Q3: What Is the Minimum Thickness Achievable with a Roller Coating Machine?

The recommended minimum workpiece thickness for a roller coating machine is 5 mm.

While thinner materials may technically pass through the machine, doing so increases the risk of the coating roller pressing against the conveyor belt. This can cause paint contamination, uneven coating, and compromised surface aesthetics, ultimately affecting overall product quality and equipment cleanliness.

Q4: What Is the Maximum Width of a Roll Coating Production Line?

The standard working width range of a roll coating production line is:

  • Minimum width: 630 mm

  • Maximum width: 2550 mm

Custom coating widths can also be designed to meet specific panel size requirementsfurniture production standards, or industrial coating needs.

Q5: Can Roller Coating Machines Be Used on Metal Substrates?

Yes, roller coating machines can be applied to certain metal substrates, such as:

  • Aluminum ceilings

  • Metal drums

For metal surface coating, proper surface pretreatmentpaint selection, and roller configuration are essential to ensure optimal adhesion and coating performance.

Q6: Where Can Roller Coating Be Applied?

Roller coating technology is widely used across multiple industries for flat or semi-flat surface finishing, including:

  • Wood flooring

  • Cabinets and wardrobes

  • Wooden doors

  • Glass panels

  • Leather products

  • Picture frames

  • Coat hangers

  • Decorative grilles

  • Game console casings

These applications benefit from high coating efficiencyuniform surface finish, and reduced material waste.

Q7: What Is the Maximum Height for Roller Coating on Workpieces with Uneven Surfaces?

Under normal circumstances, roller coating is not recommended for workpieces with uneven or complex surface structures.

Uneven surfaces can:

  • Damage coating rollers

  • Prevent complete paint coverage

  • Result in inconsistent coating thickness

For workpieces with pronounced surface irregularities or complex 3D profiles, spray coating is typically the preferred solution, as it provides better coverage and protects the roller coating equipment from premature wear.

Q8:Does the roller coating machine have requirements for the flatness of the substrate?

A8:Certain requirements apply.The substrate surface must be essentially flat, free from significant undulations or warping, as these would compromise coating uniformity.Should the substrate exhibit minor irregularities, the effect may be optimised by adding an additional primer coat or adjusting the pressure settings.

Q9:Is the daily maintenance of roller coating machines complicated?

A9:Ensure timely cleaning of the rubber rollers, conduct regular inspections of the bearings and transmission system, and maintain the cleanliness of the coating system.

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