1
Metered Feed (6-8 mm)
A vibratory feeder meters pre-crushed material into the mill to keep load and residence time stable.
Pulverizer Systems
Plastic Pulverizer Machines for PVC, PE, and Rotomolding Powder
Turn pre-crushed plastic granules into flow-stable powder with controlled particle size. Typical working range covers 30-120 mesh (about 125-600 microns), with configurations for rotomolding and recycling reuse.
Pulverizing Workflow
Closed-loop disc milling for stable mesh control, temperature control, and output consistency.
2
High-Speed Disc Grinding
Material passes between fixed and rotating toothed discs, where shear and attrition create target powder size.
3
Cooling + Pneumatic Transfer
Wind and water cooling remove process heat; powder is pneumatically conveyed to cyclone and collection.
4
Screening and Regrind Loop
A vibrating sieve qualifies final mesh; oversize returns automatically for regrind to improve yield.
Why Rumtoo Disc Pulverizers
Tighter Particle Size Distribution
Disc geometry and screening loop improve PSD stability for rotomolding, compounding, and downstream dosing.
Thermal Risk Control
Water/air cooling helps prevent melt sticking and polymer degradation, especially on PVC and heat-sensitive blends.
Continuous Line Integration
Ready for upstream granulation and downstream conveying, storage, and dosing modules in 24/7 operation.
Common Pulverizing Issues and Fixes
Problem
Rumtoo Solution
Powder is too broad in size, causing unstable molding or blending behavior.
Disc gap tuning plus calibrated screening narrows PSD and reduces off-spec recycle load.
Problem
Rumtoo Solution
Material softens or sticks in the mill during long runs.
Dual cooling and controlled feed loading keep grinding temperature within a safer operating window.
Problem
Rumtoo Solution
Energy cost per kilogram rises at finer mesh targets.
Match model size and target mesh upfront; optimize airflow and recirculation ratio to avoid over-grinding.
Problem
Rumtoo Solution
Dust management and housekeeping impact safety and uptime.
Closed conveying and dust collection architecture reduce airborne fines and improve shop cleanliness.
Machine and Powder Reference
Visual reference for input feed condition and final powder quality.
PVC Feedstock Reference
This reference image shows the prepared rigid PVC feed condition before fine milling, useful for evaluating pre-crush size and consistency.
- Helps confirm feed is pre-sized for stable pulverizer loading
- Useful for checking flake thickness and shape consistency
- Supports upstream crusher and feeder matching before RFQ
PVC Powder Output Reference
This image shows the final PVC powder condition after pulverizing, used to assess flowability, fineness, and downstream suitability.
- Useful for visual checks on fineness and powder uniformity
- Supports mesh target confirmation before bagging or blending
- Helps align quality expectations for reuse and compounding
Pulverizer Video Demonstration
Short operating view of the pulverizer system in production use.
Typical Application Scenarios
Rotomolding Feed Powder
LLDPE/MDPE powder preparation where users often target around 35 mesh class with stable flow and fusion behavior.
PVC Pipe and Profile Rework
Convert rigid PVC scrap into reusable powder for extrusion blending and controlled reuse programs.
PE/PP Compounding
Prepare fine powder for additive dispersion, specialty formulation, and selected masterbatch processes.
WPC and Filled Systems
Support powder preparation for formulations where feed uniformity affects extruder stability.
Engineering Plastics Trials
Pilot and pre-production milling for PC, ABS, and other brittle or semi-rigid materials after test validation.
Line Retrofit Modules
Add a powder-prep stage to existing recycling lines where downstream process needs tighter particle control.
Technical Specifications
| Model | Disc Diameter | Main Motor | Target Mesh | Typical Throughput* |
|---|---|---|---|---|
| RMP-400 | 400 mm | 37 kW | 35-80 mesh | 150-300 kg/h |
| RMP-500 | 500 mm | 55 kW | 30-100 mesh | 250-500 kg/h |
| RMP-600 | 600 mm | 75 kW | 30-120 mesh | 350-800 kg/h |
| Feed Recommendation | 6-8 mm | — | Depends on resin | Pre-crush for stable metering |
| Cooling | Water + Air | — | Critical for fine mesh | Supports lower thermal stress |
*Throughput depends on polymer type, target mesh, feed condition, moisture, and cooling utility capacity.
Pulverizer Sizing Checklist Before RFQ
These inputs improve sizing accuracy and reduce commissioning risk.
Material Profile
Specify resin family (PVC/PE/PP/PC), filler level, hardness, and whether material is heat-sensitive.
Target Particle Window
Define required mesh/micron range and oversize tolerance (e.g., 35 mesh class or 30-120 mesh band).
Capacity and Shift Pattern
Provide required kg/h, duty cycle, and seasonal ambient temperature to size motor and cooling correctly.
Utilities and Layout
Confirm power supply, cooling water/chiller options, and available footprint for feeder, cyclone, and dust collector.
System-Level Comparison
| Decision Criteria | Basic Grinding Setup | Rumtoo Disc Pulverizer System |
|---|---|---|
| Particle Size Control | Broader spread, higher rework | Disc gap + screening loop for tighter control |
| Thermal Management | Limited cooling strategy | Integrated water/air cooling options |
| Dust and Housekeeping | More open handling points | Closed transfer + collector-ready architecture |
| Maintenance Access | Longer intervention windows | Fast access to wear parts and adjustment points |
| Retrofit Compatibility | Higher interface effort | Designed for upstream/downstream module integration |
Frequently Asked Questions
Which plastics can this pulverizer process?
Typical materials include rigid PVC, PE (LDPE/HDPE/LLDPE), PP, and selected brittle engineering plastics such as PC/ABS blends, subject to feed prep and test confirmation.
What mesh or micron range can I expect?
Common working windows are about 30-120 mesh (roughly 125-600 microns), depending on resin behavior, disc setup, and screening configuration.
Why is cooling important in PVC and PE pulverizing?
Pulverizing generates friction heat. Cooling helps reduce melt sticking, protects polymer properties, and improves powder flowability and consistency during long runs.
What data should I send before model selection?
Share resin type, target mesh window, desired kg/h, feed size/moisture, and available utilities (power + cooling). This is the minimum dataset for reliable sizing.
Need a Pulverizer Configuration Proposal?
Send your material, mesh target, and throughput goal. Rumtoo will return a practical model recommendation with utility checklist.
Request Pulverizer Proposal