Rigid Plastic Washing Line for PP, HDPE, PVC
Turn crates, caps, pipes, and housings into clean, dry regrind. Our rigid‑wash system removes labels, oils, and fines, then dries to sub‑3% moisture for trouble‑free pelletizing.
- Sub‑3% residual moisture
- Removes labels, oils, adhesives
- Configurable throughput and layout
Key Benefits
Quick highlights that power modern, reliable recycling operations.
Lower Moisture, Higher Yield
Consistently reach sub-3% moisture for efficient pelletizing and stable throughput.
Superior Decontamination
Removes oils, labels, glue, and fines for cleaner flakes and fewer rejects.
Built for Rigid Plastics
Optimized for PP/HDPE/PVC rigid regrind such as crates, caps, bottles, pipes, and profiles.
Efficient Utilities
Optimized washing loop cuts water and energy usage to lower operating costs.
Robust, Low-Maintenance Design
Industrial components built for uptime with simplified service and spare parts.
Scalable & Customizable
Configurable layout and capacities to match your floor plan and growth.
Supported Materials (Rigid)
Typical rigid plastics this washing line is designed to process.
PP regrind
It’s common to see them as plastic chairs, toy parts, baskets, trash cans, pipes, bottles, bottle caps, and others because they provide stronger protection for goods.
HDPE regrind
HDPE regrind is widely used in containers, plastic bottles, pipes, playground equipment, and more due to its high strength, impact resistance, and chemical durability.
PVC regrind
PVC regrind is widely used in pipes, flooring, cable insulation, and window frames due to its durability, chemical resistance, and adaptability for various applications.
ABS regrind
ABS regrind is commonly used in automotive parts, electronics housings, toys, and appliances, valued for its toughness, impact resistance, and excellent surface finish.
Mixed rigid regrind
Mixed rigid streams (e.g., crates, buckets, housings, profiles) can be configured with sorting and separation to meet your quality targets.
PET regrind
Rigid PET (e.g., bottles and trays) can be handled with the right cleaning and separation configuration.
Expandable to film lines
This page focuses on rigid plastics (PP/HDPE/PVC). If your feedstock is mainly LDPE/LLDPE film, raffia, or woven bags, we can propose a dedicated film washing configuration and equipment set.
Our Process
Six tightly integrated stages remove contamination, reduce moisture, and prepare plastics for reuse.
Pre‑Washing & Sorting
Remove large contaminants and prep materials for downstream steps.
Granulation
Uniform size reduction enables more effective cleaning and handling.
Intensive Washing
Friction cleaning lifts labels, dirt, and adhesive residues.
Separation
Sink‑float separates contaminants and isolates target materials.
Rinsing & Dewatering
Final rinsing and mechanical dewatering cut moisture significantly.
Thermal Drying
Controlled hot‑air drying achieves low residual moisture.
Process Video
See the rigid washing line workflow from pre-washing to drying.
Core Equipment
Main machines typically included in a rigid PP/HDPE/PVC washing line.
Screw Feeder Specifications
- Material: 304 stainless steel
- Shell & Blade Thickness: 3 mm
- Screen Hole Thickness: 2 mm
- Spiral Diameter: Customized per output
Primary Functions
- Convey materials
- Filter water
- Clean surface sediment
Rigid Plastic Crusher Specifications
- Rotor Speed: 400–600 RPM
- Blade Material: D2 high‑carbon, high‑chromium steel
- Cutting Arrangements: V‑shape or double‑scissor
- Screen Filter Size: 10–100 mm (custom)
Primary Functions
- Cut plastics into uniform flakes
- Pre‑clean and loosen contaminants
- Reduce dust build‑up; extend blade life
Friction Washer Specifications
- Rotor Speed: 500–600 RPM
- Water System: Top inlet, bottom outlet
- Operation: Continuous
- Cleaning Method: Friction‑based
Primary Functions
- Scrub and clean plastics
- Transport between machines
- Remove soil, sand, and contaminants
Floating Separation Tank Specifications
- Interior Width: 1000–1800 mm
- Total Length: 4–7 m
- Interior Material: 304 stainless steel
- Exterior Frame: Carbon steel
- Paddle Motors: 1.5 kW × 2 (VFD)
Key Features
- “W” shaped bottom for efficiency
- Dual‑section design to manage contamination
- Water‑based separation for PP/PE
- Simultaneous cleaning and separation
Centrifugal Dryer Dewatering Specifications
- Rotation Speed: ≈ 1,000 RPM
- Moisture Reduction: To ≈ 20–30%
- Main Components: Long shaft with paddles, mesh tunnel
- Casing: Metal container with external motor
Key Features
- Low energy, high efficiency
- Handles high water content
- Water recycling capability
Thermal Dryer Specifications
- Model: RSJ800
- Blower Power: 5.5 kW
- Heating Power: 36 kW
- Pipe Diameter: ⌀159 mm
- Pipe Material: 304 stainless steel
Key Features
- Continuous drying
- Integrated cyclone separator
- Efficient dust and fines removal
- Scalable with series units
Technical Parameters
Key outputs and configuration points for rigid PP/HDPE/PVC washing.
| Supported materials | Rigid PP/HDPE/PVC regrind; ABS and rigid PET are supported with the right separation and cleaning setup. |
|---|---|
| Typical output moisture | Target sub‑3% residual moisture with the full line and proper process tuning. |
| Process stages | Pre‑wash & sorting → granulation → intensive washing → sink‑float separation → rinsing & dewatering → thermal drying. |
| Utilities | Closed-loop water design and optimized power usage, sized to your throughput and contamination level. |
| Configuration | Throughput, layout, tank length, drying capacity, and separation options are customized per project. |
| Capacity (kg/h) | Install Power (kW) | Required Area (m2) | Required Staff | Required Steam (MPa) | Required Water (m3/h) |
|---|---|---|---|---|---|
| 500 | 162 | 500 | 4 | 0.6-0.8 | 3 |
| 1000 | 250 | 800 | 4 | 0.6-0.8 | 4 |
| 2000 | 368 | 1000 | 4 | 0.6-0.8 | 5 |
Note: Configurations vary by material and contamination level. Specifications are for reference only; contact our sales team for a complete quotation.
Delivery Scope
What you typically receive with a rigid washing line project.
- Core equipment set (feeding, granulation, washing, separation, dewatering, drying) per your agreed configuration
- Electrical control cabinet and interlocks (configured to your site voltage and safety requirements)
- Process layout support (foundation guidance, utilities plan, and line arrangement)
- Commissioning guidance and operator training (on-site or remote, depending on project)
- Spare parts and documentation package (manuals, wiring, and maintenance guidance)
Optional Configuration
Add-ons selected based on feedstock contamination and target purity.
If your feedstock is mainly LDPE/LLDPE film, raffia, or woven bags, we recommend a dedicated film washing configuration (equipment and drying method differ from rigid lines).
Hot Washer Specifications
- Operation Mode: Continuous
- Washing Method: Hot chemical bath
- Internal Mechanism: High‑speed rotary paddles
- Suitable Materials: Rigid flakes and regrind (configured by material and contamination)
Key Features
- Improves cleaning for oily/adhesive contamination
- Pairs with cold wash loop
- Continuous operation for stable throughput
Zig‑Zag Air Classifier Specifications
- Separation Medium: Air
- Sorting Method: Weight‑based separation
- Contaminants Removed: Paper/plastic labels and other light materials
Key Features
- Improves label and light contaminant removal
- Dual‑exit system for separated fractions
Customer Results
Outcomes reported by operators running rigid washing lines.
Moisture dropped below 3% and pelletizing stabilized — a big improvement to our bottom line.
Contamination removal is far better than our previous setup, with minimal maintenance demands.
Handles mixed regrind grades reliably — throughput and quality are both up.
Frequently Asked Questions
Answers to common questions to help you evaluate the best-fit solution.
Which regrind materials are supported?
This line is optimized for rigid PP/HDPE/PVC regrind (crates, caps, bottles, pipes, profiles). ABS and rigid PET are supported with the right separation. For mainly LDPE/LLDPE film or raffia, ask us for a dedicated film washing configuration.
What output moisture can I expect?
With the full line and correct setup, residual moisture typically falls below 3%.
Can the system fit our plant layout?
Yes. We customize conveyors, tanks, and dryers to suit your footprint and capacity.
How about installation and training?
On-site guidance or remote support plus operator training for a confident start-up.
Request Your Custom Proposal
Tell us about your materials, capacity goals, and space constraints. We’ll tailor a washing line that fits your operation.