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In the field of refrigerator manufacturing, achieving high-quality, durable, and uniform coatings on refrigerator shelves and grids is crucial for product performance and aesthetics. The Automatic/manual Fluidized Bed Dip Powder Coating Equipment Line is a professional solution tailored to this demand. It integrates advanced fluidization technology, flexible automation options, and environmental compliance, making it an ideal choice for medium-scale enterprises seeking cost-effectiveness and coating excellence.
Product Overview
This equipment line is specifically designed for thermoplastic powder coating processes, with a core focus on providing uniform, high-adhesion coatings for refrigerator shelves, grids, and similar metal workpieces. It offers three operation modes—full-automatic, semi-automatic, and manual—to adapt to different production scales and workflow needs. All key parameters, including equipment size, power, and output capacity, can be fully customized based on your specific coating processes and production requirements.
Key Technical Parameters
Parameter Category |
Specification Details |
Certification |
ISO, CE, CCS, LR, ABS |
Automatic Grade |
Automatic, Semi-automatic, Manual (optional) |
After-sales Service |
Lifetime support |
Customization |
Fully customizable (size, power, output, etc.) |
Equipment Condition |
Brand new |
Equipment Type |
Dip powder coating equipment |
Power Source |
Electric |
Heating Source |
Electricity, Gas, or Diesel (optional) |
Transport Package |
Wooden packaging (for safe shipping) |
Specification |
Customized based on workpiece size and production needs |
Origin |
China |
Minimum Order Quantity |
1 Piece |
FOB Port |
Shanghai |
Payment Terms |
T/T, L/C, PayPal, Other (negotiable) |
Delivery Time |
20 days (subject to customization requirements) |
Core Working Principle
The equipment operates on the scientific principle of fluidization, ensuring even coating coverage and strong adhesion. The process is divided into three key stages:
-
Fluidized Bed Generation: Thermoplastic powder is stored in a dedicated chamber. Controlled airflow is introduced from the bottom of the chamber, suspending and agitating the powder particles to create a "fluid-like" state (similar to liquid behavior). This forms a stable, uniform powder "fluid layer" ready for coating.
2. Preheating & Dip Coating: Refrigerator shelves (or other metal workpieces) are first preheated to a specific temperature. After pre-treatment (e.g., degreasing, derusting), the workpieces are transported into the fluidized bed—automatically by a conveying system (for automatic/semi-automatic models) or manually (for manual models). The preheated workpiece melts the powder particles on contact, and the powder adheres uniformly to the surface via thermal adsorption.
3. Curing & Forming: The coated workpieces are transferred to a post-heat oven (curing channel). High-temperature heating melts, levels, and cures the powder, forming a dense, smooth, and durable thermoplastic coating on the shelf surface. The final coating resists wear, corrosion, and daily impacts—ideal for refrigerator interior use.
Key Product Advantages1. High Degree of Automation (for Automatic/Semi-automatic Models)
Equipped with a Programmable Logic Controller (PLC), the automatic and semi-automatic models can independently complete workpiece conveying, dip coating depth adjustment, and powder replenishment. This minimizes manual intervention, reduces operational errors, and improves production consistency—critical for large-batch refrigerator shelf manufacturing.
2. Excellent Coating Performance
The fluidized powder layer is evenly distributed, enabling full coverage of complex workpiece structures (e.g., shelf grooves, edges, and grid gaps). The coating thickness is precisely controllable, and the final finish boasts strong adhesion, wear resistance, and corrosion resistance—meeting the long-term use requirements of refrigerator shelves.
3. High Efficiency & Energy Saving
• Powder Utilization: Over 95% of the thermoplastic powder is utilized, significantly reducing raw material waste compared to traditional spraying processes. Unattached powder can be recycled and reused, lowering material costs.
• Energy Efficiency: Adopts a high-efficiency heating module, reducing energy consumption by 10%-15% compared to similar coating equipment on the market.
4. Environmental Compliance
The entire coating process produces no solvent volatilization, fully complying with global industrial environmental protection emission standards. Recyclable powder also minimizes solid waste generation, aligning with green manufacturing trends.
Applicable Scenarios & Workpiece Compatibility
While optimized for refrigerator shelves and grids, this equipment line is versatile enough for other industries and workpieces:
1. Target Industry for Refrigerator Production
• Workpieces: Refrigerator wire shelves, plastic-coated shelves, grid partitions, and door inner liners (metal parts).
• Material Requirement: Suitable for metals such as steel, aluminum, and zinc alloys (common materials for refrigerator shelves).
2. Extended Industrial Applications
• Automotive manufacturing: Chassis parts, fasteners, and small metal components.
• Hardware tools: Wrench handles, screwdriver shafts, and plier heads.
• Home appliance production: Washing machine inner tubs, oven door hinges, and air conditioner metal brackets.
• Medical equipment: Small metal accessories (e.g., instrument frames).
3. Workpiece Size Compatibility
Conventional fluidized bed tank volume ranges from 100L to 500L. For oversized or specially shaped workpieces (e.g., extra-long refrigerator shelves), custom tank sizes are available upon request.
We specializes in the R&D, production, and export of thermoplastic polymers, thermoplastic powder coatings, PVC plastisol liquid coatings, and supporting dip coating equipment.
• Quality Control: Strict inspections from raw material warehousing to final product packaging ensure consistent product quality and stability.
• Technical Team: The polymer branch has experienced senior technicians and skilled production workers to support coating material and equipment optimization.
• Manufacturing Scale: The machinery branch operates a 10,000-square-meter production workshop, enabling efficient and streamlined equipment manufacturing.
We are committed to providing global customers with integrated coating solutions—combining high-performance materials and reliable equipment—to enhance your production efficiency and product competitiveness.
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