Comma Coating Machine About
The Automatic Comma Coating Machine manufactured by Mohindra Mechanical Works is engineered for the precise and uniform application of adhesives, resins, silicone, varnish and other functional coatings on flexible roll materials. Its specially designed comma knife or comma roll assembly provides accurate control over coating thickness and helps maintain consistent coating GSM across the complete web width.
The machine can process paper, BOPP, PET, polyester film, aluminium foil, PVC film, non-woven fabric and laminated substrates. It is equipped with automatic unwinding, web guiding, tension control, precision coating, multi-zone hot-air drying and controlled rewinding systems. The PLC and HMI control panel enables convenient adjustment of speed, temperature, web tension and coating parameters. Its heavy-duty fabricated structure provides stable, low-vibration operation. Working width, coating range, drying length and heating source can be customized to suit different production requirements.
Key Features
- Precision comma knife coating system
- Accurate and adjustable coating thickness
- Uniform coating across the web width
- Automatic roll-to-roll operation
- PLC with HMI touchscreen control
- Automatic web-tension control
- Automatic edge-guiding system
- Multi-zone hot-air drying chamber
- Digital temperature regulation
- Smooth unwinding and rewinding
- Hard chrome-plated precision rollers
- Heavy-duty, vibration-resistant structure
- Easy adjustment and maintenance
- Low coating-material wastage
- Customized width and drying system available
Suitable Materials
- Paper and kraft paper
- BOPP film
- PET and polyester film
- PVC film
- Aluminium foil
- Laminated packaging film
- Non-woven fabric
- Release liner
- Label stock
- Specialty flexible substrates
Suitable Coating Materials
- Water-based adhesive
- Solvent-based adhesive
- Acrylic emulsion
- Silicone coating
- Resin coating
- Release coating
- Protective varnish
- Pressure-sensitive adhesive
- Heat-seal coating
- Barrier coating
- Functional chemical coating
- Hot-melt coating with suitable configuration
Applications
- Self-adhesive label material
- Release paper and release film
- Protective film manufacturing
- Adhesive tape material
- Flexible packaging coating
- Silicone-coated paper
- Barrier-coated paper and film
- Medical and hygiene materials
- Heat-seal coated packaging material
- Industrial laminating material
- Specialty paper and film coating
- Pressure-sensitive adhesive products
Finished Products
- Adhesive-coated paper rolls
- Silicone release-paper rolls
- Coated PET and BOPP film
- Protective film rolls
- Self-adhesive label stock
- Coated aluminium foil
- Barrier-coated packaging film
- Heat-seal coated material
- Industrial adhesive laminate
- Coated non-woven material
Product Advantages
- Provides consistent coating GSM
- Offers accurate thickness adjustment
- Reduces excess coating consumption
- Produces a smooth and uniform coated surface
- Suitable for multiple flexible materials
- Supports water- and solvent-based formulations
- Maintains stable web tension at higher speeds
- Suitable for continuous industrial production
- Allows customization for specific coating processes