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Continuous Hot Washer System

Plastic Flake Washing Equipment

Continuous Hot Washer System

Achieve food-grade purity for PET and HDPE flakes with advanced hot chemical washing and high-friction cleaning technology.

Continuous Hot Washer System for PET and HDPE Flakes
Advantages

Chemical Cleaning Performance

Our system is engineered to deliver superior cleaning performance, ensuring your final product meets the highest quality standards.

Superior Decontamination

Hot chemical washing effectively dissolves stubborn glue, oil, and organic residues that cold washing leaves behind.

High-Efficiency Throughput

The continuous flow design eliminates downtime between batches, ensuring a consistent, high-capacity output for your entire line.

Robust Stainless Steel Build

Constructed entirely from SUS304 stainless steel for maximum durability, corrosion resistance, and to prevent material contamination.

Intense Friction Scrubbing

High-speed rotary paddles create intense friction between flakes, scrubbing surfaces clean in a single, efficient cycle.

Problem & Solution

Process Limitations

Standard washing processes fail to remove the toughest contaminants, limiting the value and application of your recycled flakes. Our hot washer is the solution.

Problem: Stubborn Contaminants

Residual label glue, oil, grease, and beverage residues remain on flakes after cold washing, leading to lower-grade, discolored, and odorous rPET.

Solution: Total Impurity Removal

The combination of hot water, chemical agents, and intense friction dissolves and scrubs away all contaminants, producing exceptionally clean, pure flakes.

Problem: Inefficient Batch Washing

Traditional batch washers create bottlenecks in a continuous recycling line, requiring downtime for loading and unloading, which lowers overall plant output.

Process

Cleaning Process Stages

A systematic, automated process that ensures every flake is thoroughly decontaminated for the highest quality results.

1

Hot Chemical Soak

Flakes enter a heated bath with a cleaning solution, which begins to break down and dissolve glues and oily residues.

2

High-Friction Scrubbing

High-speed rotary paddles vigorously agitate the flakes, forcing them to rub against each other and scrub all surfaces clean.

3

Continuous Material Flow

The system is designed for a constant, uninterrupted flow of material, ensuring consistent cleaning and maximum throughput.

4

Purified Flake Discharge

After the deep clean cycle, the exceptionally clean flakes are automatically discharged for the next stage of the washing line.

1

Hot Chemical Soak

Flakes enter a heated bath with a cleaning solution to break down glues and oily residues.

2

High-Friction Scrubbing

Rotary paddles agitate the flakes so surfaces are scrubbed clean.

3

Continuous Material Flow

A constant material flow keeps cleaning consistent and throughput high.

4

Purified Flake Discharge

Clean flakes discharge automatically for the next washing-line stage.

Applications

End-Market Applications

Producing exceptionally clean flakes is the key to accessing the most profitable markets for recycled plastics.

Food-Grade rPET Production

An essential step for any recycling plant aiming to produce rPET flakes suitable for direct food-contact packaging.

Bottle-to-Bottle Recycling

Critical for creating pure, clear flakes that can be used to manufacture new, high-quality transparent bottles.

High-Quality Polyester Fiber

Ensures the removal of all contaminants that could cause defects or discoloration in the production of fine polyester staple fiber (PSF).

Specifications

Operating Specifications

ParameterValue
Mixer Motor Power7.5KW / 11KW / 15KW
Drum Diameter1500mm / 1800mm / 2000mm
Material of ConstructionSUS304 Stainless Steel
Rotary Valve Speed50 RPM
Heating MethodSteam or Electric (Customizable)
CertificationCE (Optional)
Washing Technology Selection

Continuous Hot Washer vs Batch Steeping Tank & Cold Friction Washers

Selecting the right flake decontamination technology determines hot-melt glue removal, chemical consumption, energy efficiency, and final rPET optical transparency.

Evaluation Parameter Energycle Continuous Hot Washer Batch Atmospheric Steeping Tank Ambient Cold Friction Washer Alone
Decontamination Principle Continuous heated caustic immersion combined with high-speed rotor mechanical shear Static or low-speed soaking in heated caustic bath with batch agitation High-speed mechanical paddle impact using cold water only
Hot-Melt Glue & Oil Removal Complete dissolution of EVA adhesives, oil films, and label glues at 85°C–90°C Moderate glue softening; dissolved adhesives risk re-depositing during cooling Incapable of dissolving hot-melt glues; smears adhesive residue across flakes
Operating Mode & Throughput True 24/7 continuous inline processing with zero cycle waiting time Discontinuous batch cycles requiring lengthy filling, heating, and drainage stops Continuous high-throughput operation, but cleaning remains strictly superficial
Thermal Insulation & Steam Efficiency Fully enclosed double-skin insulated chamber minimizes thermal and chemical loss Open or poorly sealed tanks result in massive evaporative heat and caustic loss Operates at ambient temperature without thermal heating energy
Flake Optical Purity & Color Quality Produces premium bottle-to-bottle grade flakes with sparkling clarity and low yellow index Uneven flake clarity with batch-to-batch color drift and residual yellowing Hazy flake surfaces; residual adhesives scorch and cause yellowing during extrusion
Warranty and Support

Reliable Support Throughout the Equipment Lifecycle

From installation planning to routine maintenance, our service team helps keep your equipment operating safely, consistently, and efficiently.

1-Year Limited Warranty

Coverage includes manufacturing defects in major mechanical and electrical components for one year. Normal wear parts and damage caused by improper operation are handled separately.

1-year parts and workmanship coverage

Installation Guidance

We provide layout, foundation, utility, clearance, line-integration, and commissioning guidance to support a smooth installation and reliable startup.

Commissioning support

Spare Parts Supply

Replacement wear parts, bearings, seals, sensors, electrical components, and other service items are available for scheduled maintenance and long-term operation.

Long-term availability

Technical Assistance

Remote troubleshooting, operating recommendations, maintenance guidance, and optional on-site service are available when your project needs additional support.

Global service
FAQ

Common Engineering Questions

Cold washing can remove dirt and debris, but it is ineffective against stubborn contaminants like the glue from labels and residual oils or fats from the bottle’s original contents. Hot water (typically 80-90°C), combined with a chemical agent, is essential to dissolve these substances and produce the high-purity flakes required for premium applications.

A continuous system means there is no downtime between loads. Material is constantly fed in, processed, and discharged, integrating seamlessly into your washing line. This is much more efficient than a “batch” washer, which must be stopped, emptied, and refilled, creating bottlenecks and lowering the overall throughput of your facility.

The system is designed for robust, long-term operation. Routine maintenance includes checking the motor and bearings for proper lubrication and inspecting the rotary paddles and interior surfaces for wear over time. The SUS304 stainless steel construction minimizes corrosion and simplifies cleaning.

Request a Quote

Upgrade your washing line with our Continuous Hot Washer and start producing premium-grade flakes. Contact us today for a detailed proposal and to discuss your specific needs.

Process-specific equipment sizing
PET and HDPE flake washing support
Integration advice for existing lines

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