Plastic Washing Lines
Not sure whether you need a PET bottle washing line, a film washing line, or a rigid flake line? Start here. Rumtoo helps you choose the right system family first, then configures modules — pre-wash, hot wash, friction, sink-float, drying, and water treatment — around your actual feedstock and output target.
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The correct sequence depends on resin family, contamination profile, and final output requirement.
Debaling, pre-sorting, or wet crushing remove loose dirt and stabilize material flow before more aggressive cleaning stages begin.
Friction washers scrub labels, paper, mud, and fines. Hot wash is added when the material carries glue, oils, food residue, or stubborn contamination.
Density separation removes heavy or incompatible plastics, while repeated rinse and air separation stages improve the purity baseline before drying.
Centrifugal drying, thermal drying, or screw squeezing are matched to PET flakes, film, or rigid regrind so the output is ready for packing or pelletizing.
PET bottle lines, film washing lines, and rigid flake lines use different module sequences. Choosing the wrong family wastes capital and limits output quality from day one.
When pre-wash, hot wash, friction washing, sink-float, drying, and water treatment come from one supplier, module sizing, transfer points, and control logic are matched — not patched together after purchase.
Water recirculation, heating, sludge handling, and electrical load are sized as a system rather than module by module, reducing total utility cost and commissioning surprises.
Bought a generic washing line hoping it would handle PET, film, and rigid plastics equally well.
Rumtoo starts by identifying your primary resin family and contamination profile, then selects the correct line type before choosing individual modules.
Specified a film line but the real feedstock turned out to be mixed PET bottles and film — now neither washes well.
A proper material assessment before RFQ prevents mismatched configurations. When mixed streams are expected, Rumtoo can design split routes or hybrid sections.
Water treatment and sludge handling were not planned during line design, causing regulatory and cost problems after startup.
Rumtoo includes water recirculation, settling, and filtration in the initial scope so utility requirements are clear before installation begins.
Each module was sourced separately and integration gaps caused underperformance at transfer points.
Integrated system design ensures conveyors, pumps, tanks, and control panels are sized together with matching throughput and communication.
Core modules that usually decide purity, moisture, and downstream stability.
Layout planning matters because tanks, dryers, water treatment, access platforms, and transfer points define how easy the line is to run and maintain.
Sink-float separation is one of the most important modules in PET and rigid plastic washing when density-based separation determines the final purity baseline.
Post-consumer bottle bales requiring label removal, hot washing, sink-float separation, and < 1% final moisture for food-grade or fiber-grade flakes.
Agricultural film, shopping bags, stretch wrap, and woven bags — see our dedicated Film Recycling Line page for equipment details and model configurations.
Milk bottles, detergent containers, crates, and industrial rigid plastics where hot wash may be needed for glue, oil, or odor.
Municipal or commercial feedstock where the contamination profile requires upstream sorting, deeper washing, and more robust water treatment.
Existing plants adding hot wash, sink-float, drying modules, or water recirculation to improve output quality without rebuilding the entire facility.
| Line Family | Typical Throughput | Output Condition | Typical Utility / Layout Note |
|---|---|---|---|
| PET Bottle Line | 500-3000 kg/h | < 1% moisture, high-purity flakes | Hot wash, friction wash, and water treatment usually required |
| Film Washing Line | 300-2000 kg/h | < 3-5% moisture after matched drying | Squeezer or stronger dewatering often needed for pelletizing |
| Rigid Plastic Line | 500-3000 kg/h | Clean washed flakes for extrusion | Hot wash depends on glue, oil, odor, and application target |
| 1000 kg/h PET Reference | Around 1000 kg/h | Bottle-grade washed flake route | Roughly 400-750 m² depending on modules and utility area |
| Water System | Project-specific | Recirculated where possible | Fresh water and sludge load depend on contamination and treatment design |
Reference values vary by feedstock condition, purity target, hot wash requirement, and water-treatment scope. Final sizing is based on project data rather than a single standard line.
These inputs determine whether the line needs hot washing, deeper separation, or more aggressive drying.
Specify PET bottles, PE/PP film, rigid HDPE/PP, woven bags, or mixed streams. The process route changes significantly by resin family.
Describe labels, glue, food residue, oil, sand, stones, organics, and heavy polymer contamination such as PVC or PET carryover.
Clarify whether you need washed flakes, low-moisture film feed, or a pelletizing-ready output with a specific purity or moisture requirement.
Provide power, water, steam or electric heating availability, wastewater plan, and usable floor space for tanks, dryers, and maintenance access.
| Decision Criteria | Basic Wash Line | Rumtoo Integrated System |
|---|---|---|
| Material Matching | Same logic used for all plastics | Modules selected by resin family and contamination |
| Hot Wash Decision | Added late or omitted blindly | Included only when glue, oil, or residue justify it |
| Water Management | Often treated as an afterthought | Recirculation and sludge handling designed into the line |
| Downstream Readiness | Variable discharge moisture and purity | Output prepared for drying, storage, or pelletizing |
| Expansion Planning | Hard to retrofit later | Modular layout supports staged upgrades and line additions |
The primary resin type and contamination profile determine the system family. PET bottle bales need hot wash and sink-float; film needs densifying and squeezing; rigid flakes need force feeding and possibly hot wash. Send Rumtoo your material details for a route recommendation.
Some hybrid configurations are possible, but PET and film have very different density, drying, and downstream requirements. In most cases, dedicated lines or split routes deliver better output quality and uptime.
The main cost drivers are throughput, hot wash requirement, number of separation stages, drying method, and water treatment scope. A 500 kg/h cold-wash film line costs significantly less than a 2000 kg/h PET hot-wash line with full water recirculation.
At minimum: material type and photos, contamination description, target kg/h, desired output (washed flakes or pellets), available utilities (power, water, heating), and site footprint. The more detail you provide, the more accurate the proposal.
Share your material, contamination level, target purity, and utility conditions. Rumtoo will return a practical process route with key modules and planning notes.
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