H.R. PLASTIC MACHINERY PVT. LTD.
Mother Baby Extruder Supplier in India
Mother Baby Extruder Supplier in India
Mother Baby Extruder Supplier in India | Two-Stage Recycling & Pelletizing Lines
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Mother Baby Extruder Supplier in India
A mother–baby extruder (two-stage recycling line) combines a heavy-duty primary extruder for melting contaminated film flakes with an inline screen changer, followed by a secondary “baby†extruder for pressure stabilization and uniform pelletizing. Ideal for LDPE/LLDPE film, raffia, woven sacks, and printed laminates, it delivers cleaner melt, lower gels, and consistent MFI. Evaluate throughput (150–1200 kg/hr), filtration area, degassing, and pelletizing type before purchase. For videos, line layouts, and selection help, explore www.hrplasticindia.com.
Working Principle & Process Flow
The primary (mother) extruder plasticizes and filters the feed with vacuum venting to remove inks, volatiles, and moisture. Melt then passes through an automatic screen changer into the secondary (baby) extruder that stabilizes pressure and pushes melt to strand or die-face pelletizing. Twin-stage architecture improves impurity handling, reduces back-pressure spikes, and protects gearboxes. SCADA/PLC logs energy (kWh/kg), alarms, and recipes for repeatable quality across shifts.
Types of Mother–Baby Extruder Lines
- Film-focused MB lines (150–350 kg/hr) with force-feed hoppers and cutter-compactor/agglomerator options for light, fluffy inputs.
- High-throughput MB systems (500–1200+ kg/hr) with larger L/D, multi-zone heating, and dual-piston screen changers for continuous production.
- MB lines for woven sack & raffia with metal separator, density tank integration, and abrasion-resistant screws/barrels.
- Food-contact rPET/rPE-ready modules using SS304 wetted parts, hot-wash compatibility, and advanced degassing for low VOC pellets.
- Custom MB lines for printed multilayer laminates with optimized filtration (80–200 mesh) and odor-control options.
Key Features & Specifications
- Automatic screen changer (hydraulic/continuous) with large filtration area to handle inks, paper, aluminum traces, and fines.
- Dual or triple vacuum venting for moisture and VOC removal; improved melt clarity and reduced odor.
- Energy-efficient IE2/IE3 motors with VFDs; documented kWh/kg for OPEX planning and audits.
- Pelletizing choices: strand, die-face hot-cut, or underwater for tight size distribution and low dust.
- PLC-SCADA with recipe management, alarm logs, preventive maintenance prompts, and remote diagnostics.
Applications in Plastics Recycling
- LDPE/LLDPE film granulation from carry bags, mulch films, and packaging trims with stable MFI for blown film/sheet.
- PP woven sack & raffia recycling to produce pellets for injection, sheet extrusion, and tape lines.
- Printed laminates and post-consumer film streams upgraded to pellets for non-food packaging and utility products.
- Industrial trim, start-up lumps, and in-house rejects reprocessed into consistent regrind pellets for captive use.
Benefits of Choosing a Mother–Baby Extruder Supplier
- Cleaner melt & fewer black specks due to staged filtration and pressure stabilization between mother and baby extruders.
- Higher uptime with continuous screen changing, robust gearboxes, and easy access for cleaning and screw pull-out.
- Lower odor and moisture thanks to optimized venting and controlled residence time across both stages.
- Predictable quality (MFI/IV, color, bulk density) improving downstream film blowing, molding, and sheet lines.
Selecting the Right Supplier in India
Compare suppliers on experience with Indian waste profiles, filtration technology, screw metallurgy, and pelletizing options. Request plant layouts, utility lists, FAT protocols, and guaranteed benchmarks (throughput, moisture, gel count). Ensure availability of spares, service teams, and operator training. Popular upgrades include stainless contact parts, water-recycling modules, odor control, gravimetric dosing, and data logging for ESG/traceability.
Operation, Maintenance & Safety Tips
- Maintain wash/segregation quality; feed consistent flake size and moisture for stable pressure and pellet size.
- Monitor melt pressure/temperature trends; schedule screen changes and back-flush cycles proactively.
- Lubricate gearboxes as per OEM intervals; inspect heaters, thermocouples, and vacuum seals weekly.
- Train operators on lockout-tagout, purging, hot-surface safety, and emergency stop procedures.
- Stock critical spares (screens, heaters, seals, breaker plates) with traceable part numbers.
FAQs – Mother Baby Extruder Supplier
1. What capacities are typical for mother–baby extruders?
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Common ranges are 150–1200 kg/hr depending on polymer, contamination level, and filtration area. Modular designs allow scaling by screw diameter and motor size without redesigning the whole line.
2. When should I choose die-face pelletizing over strand?
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Die-face hot-cut is preferred for films and lower viscosity melts requiring uniform pellets with minimal strands. Strand is economical and suits cleaner feeds; underwater suits high outputs and tight distributions.
3. How does the baby extruder improve quality?
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It stabilizes melt pressure/temperature after primary filtration, reducing surges, smoothing pellet size, and lowering gels/defects in downstream film or sheet extrusion.
4. What utilities are required for a mid-size line?
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Three-phase power, process water for vacuum seals and cooling, and compressed air for pneumatics. Plan for water recycling and an ETP to manage wash effluents where applicable.
5. Which materials run best on MB lines?
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LDPE/LLDPE films, PP woven sacks/raffia, trim waste, and printed laminates. PET variants require dedicated hot-wash and controlled IV with stainless contact parts.
Contact Details
Talk to our specialists today for tailored solutions and fast assistance.
Company: Hr Plastic India
Phone: +91 95102-05025
WhatsApp: Chat on WhatsApp
Email: [email protected]
Website: www.hrplasticindia.com
Address: Office Address :- 3, Abhishree Industrial Park, B/h. G.V.M.M., Near Odhav Circle, Ahmedabad-382415.
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