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Standard Six‑Station Rotary Spin Coating Line for Molded Pulp Internal Barrier Coating
Production Line Composition
This integrated six‑station rotary spin coating production line consists of:
Automatic Feeding Station – servo‑driven pick‑and‑place unit with vacuum grippers, product orientation sensors, and vision‑guided positioning
Six‑Station Rotary Indexing Turntable – heavy‑duty servo‑driven rotary table with 6 programmable stations (60° indexing), precision positioning accuracy ±0.1 mm, station dwell time independently programmable
Coating Dispensing System – peristaltic pump or precision syringe pump, 0.1-50 mL dispensing range, stainless steel tank with agitator and 50-200 µm filtration, automatic viscosity control
Six Independent Spin Coating Motors – one high‑torque servo motor per station (0-3,000 RPM each), individual speed and acceleration programming per station, tool‑free fixture replacement
Centralized Exhaust & Solvent Recovery System – integrated fume extraction with HEPA filtration, activated carbon or wet scrubber treatment option
PLC Control Cabinet – industrial‑grade PLC with 10-12" touchscreen HMI, Ethernet/IP and Modbus TCP communication, 200+ recipe storage
Data Logging & Remote Access Module – USB export, cloud reporting (optional), real‑time production monitoring
Automatic Unloading & Stacking Station – pick‑and‑place robot with product counting and stacking, conveyor interface to downstream curing oven
All product contact parts are constructed from SUS304 or SUS316L food‑grade stainless steel, with the turntable and fixture plates featuring hardened and corrosion‑resistant coating.
Product Overview
This Standard Six‑Station Rotary Spin Coating Line is purpose‑built for the automated, high‑throughput application of barrier coatings to the internal surfaces of molded pulp products – including food containers (plates, bowls, clamshells), industrial packaging (trays, corner protectors), and specialized molded fiber components (electronics packaging, medical device trays).
The six‑station turntable design delivers significantly higher output than batch or single‑station systems while maintaining a compact footprint. Each station operates simultaneously on a different product, with the turntable indexing precisely between stations.
By carefully controlling the desired spin speed, each product receives a uniform centrifugal coating layer that conforms perfectly to the internal contours of the molded fiber cavity – regardless of complexity. This process ensures precise film thickness (±2 µm) and material transfer efficiency (>90%), significantly reducing waste compared to spray methods.
Applications
Food service ware – plates, bowls, clamshells, lunch boxes, cup carriers requiring water‑resistant and oil‑resistant functional coatings
Egg trays and food trays – internal barrier coating for moisture protection
Electronics packaging – anti‑static trays for semiconductors, circuit boards, hard drives
Medical device trays – sterile barrier packaging, pharmaceutical inserts
Cosmetics packaging – premium molded fiber inserts and display trays
Customization Options
This six‑station rotary spin coating line offers extensive customization for diverse production needs:
Customizable number of stations – expand from 6 to 8, 12, or 16 stations for higher throughput
Customizable turntable diameter – from 1,200 mm to 2,500 mm to accommodate larger product pallets
Customizable spin speed range – up to 5,000 RPM for ultra‑thin coatings; lower maximum speed for heavy‑viscosity coatings
Customizable product fixtures (pallets/nests) – dedicated nests per product shape with tool‑less quick‑change system; vacuum‑assisted or mechanical clamping
Customizable station layout – rearrange dispensing, spin, and drying operations across stations
Customizable coating type and compatible pump system – peristaltic for water‑based/latex, syringe for precision micro‑dispensing (0.01 mL resolution), diaphragm for high‑viscosity
Customizable drying station integration – integrate IR, hot air, or UV‑LED modules at dedicated stations
Customizable data reporting & traceability – CSV, PDF, or custom‑format exports; optional FDA 21 CFR Part 11 with electronic signatures and audit trails
Customizable loading/unloading automation – vision‑guided robotic loader/unloader, conveyor integration, or manual loading station
Customizable cleanroom compatibility – ISO 5 (Class 100) to ISO 8 (Class 100,000) with HEPA‑filtered enclosure, positive‑pressure design
Customizable voltage and frequency – for any global location (208V to 690V, 50Hz or 60Hz)
Key Features
Six‑station simultaneous operation – all stations active in parallel, maximizing throughput vs. batch systems
Continuous rotary indexing – no waiting between cycles; steady‑state production flow
Independent spin control per station – each station's motor can be set to different speed and acceleration profiles
High coating transfer efficiency – ≥90% material utilization, significantly reducing coating waste
Precision thickness control – ±2% coating weight accuracy, ±2 µm film thickness uniformity
Operator and maintenance training – 3‑5 days on‑site training included
2‑year warranty – on turntable drive, spin motors, PLC, dispensing pumps, sensors, and all electronics
Spare parts supply – guaranteed availability for 10+ years; 48‑hour global express shipping for critical components
Preventive maintenance program – annual on‑site inspection, motor calibration, pump rebuild, sensor verification, and fixture alignment check
Free sample testing and process development – send your molded pulp products; we provide coating test report, optimized spin parameters, and recommended station configuration
Remote diagnostics – VPN access to PLC for real‑time troubleshooting and software‑based parameter tuning
Packing and Shipping
Packed in export‑grade plywood cases with VCI anti‑rust film, desiccant bags, and custom‑cut foam padding
Shipped in modular sections for container loading (40ft HC containers recommended)
Sensitive control components packed separately with anti‑static and shock‑proof protection
Includes: English manual, CE certificate, electrical schematics, calibration certificates, tool kit, full spare parts kit
Shipping terms: FOB / CIF / DAP / DDP by sea, air freight for smaller systems
Lead time: 35 days for standard configuration; 50‑70 days for fully customized lines
Minimum order: 1 set
Frequently Asked Questions
How does the six‑station rotary design improve production capacity over a single‑station spin coater?
In a single‑station coater, you can only process one product at a time – load, dispense, spin (10‑30 seconds), unload – yielding 120‑360 pieces per hour at best. Our six‑station rotary system processes six products simultaneously: while Station 1 is loading a new product, Station 2 is dispensing coating, Stations 3-5 are spinning at different speeds and durations, and Station 6 is unloading the finished product. All stations operate in parallel, so total throughput approaches the spin cycle time of the slowest station. For typical 15‑second cycles, this yields 1,440 pieces per hour – a 400‑900% increase over single‑station alternatives, with the same operator attention.
Can each station be programmed with a different spin speed or this is a global setting?
Each of the six stations has its own independent servo motor and drive controller. You can program Station 1 to spin at 500 RPM for 10 seconds, Station 2 at 1,200 RPM for 8 seconds, Station 3 at 800 RPM for 15 seconds, and so on – all within the same production run. This is invaluable for multilayer coatings or when processing different product shapes simultaneously.
What types of coatings can be applied with this spin coating line?
The system is compatible with water‑based barrier coatings, bio‑polymer dispersions (PLA, PHA, PBAT), acrylic emulsions, solvent‑based lacquers, UV‑curable coatings, and low‑viscosity epoxy or polyurethane primers. For aqueous and solvent systems, the exhaust extraction system handles vapor safely. For UV‑curable coatings, we can integrate a UV‑LED curing station at a dedicated turntable position.
How do you ensure coating uniformity on deep‑draw products like bowls or cups?
The centrifugal spin method naturally distributes coating from the bottom outward toward the sidewalls. For deep‑draw parts (height>80 mm), we offer a customizable two‑stage spin profile: an initial low‑speed spin to distribute coating along the bottom surface, followed by a high‑speed spin that accelerates radially, driving the coating upward along the sidewalls. Our fixture design also incorporates recessed bottom supports that minimize contact area, ensuring the entire internal surface receives coating contact.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2007
Total Annual:
2000000-3000000
Employee Number:
150~200
Ecer Certification：
Verified Supplier
Company Profile
Dongguan Osmanuv Mechanical Equipment Co., Ltd. is a design, research, development, manufacturing as one of the UV equipment, UV equipment and coating, infrared IR equipment, professional production enterprises, automation equipment, environmental equipmen...
Company Profile
Dongguan Osmanuv Mechanical Equipment Co., Ltd. is a design, research, development, manufacturing as one of the UV equipment, UV equipment and coating, infrared IR equipment, professional production enterprises, automation equipment, environmental equipmen...
