Plastic Carry Bag Shredder and Plastic Bag Recycling Machine
Carry bags jam ordinary grinders: they wrap, tangle and stall the rotor. A dual shaft carry bag shredder grips the film and tears it through instead, which makes it the first plastic bag recycling machine in any bag line. Shred poly bags from collection centres, malls and dry-waste facilities on a plastic bag shredder built by Raj Electricals since 1985.
The Carry Bag & Poly Bag Waste Challenge
Carry bags are the most visible plastic waste in India and the least loved by recyclers. They arrive in volume from every direction: kabadiwala and waste-collector networks, mall and retail back-rooms, housing society dry-waste rooms, and the municipal dry waste collection centres (DWCCs) that segregate household plastic. The Plastic Waste Management Rules have banned the thinnest bags and pushed carry bags to a minimum thickness of 120 microns, but enforcement seizures and legacy waste mean enormous quantities of mixed poly bags still need processing every single day.
The problem is the material’s behaviour, not its chemistry. Carry bags are LDPE or HDPE film, among the easiest plastics to re-pelletize once densified. But loose bags are nearly weightless: a full godown of bags may hold only a few hundred kilograms, so storage and transport costs eat the margin. Worse, film is the classic machine-killer. In a high-speed grinder, bags float above the blades, wrap around the rotor shaft and choke the screen, and operators spend more time cutting tangles off the machine than running it. Processing carry bags economically starts with a shredder designed for film behaviour.
The Right Carry Bag Shredder for Film
Film needs grip. A dual shaft shredder runs two counter-rotating shafts with interlocked blades at low speed and high torque: bags are pulled positively down into the shear zone and torn through, instead of riding on top of a spinning rotor. Carry bags are a documented application on Raj Electricals’ dual shaft machines, the same platform that shreds non-woven bags, cement sacks and film-type waste. A dual shaft shredder is the standard recommendation, sized to your daily film intake, with the heavy all-metal build these machines share.
Plan the line around what comes after the shredder. Dual shaft output is an uneven shredded strip, the right feed for the agglomerator or densifier that gives film enough bulk density to pelletize. If your stream includes baled or compacted bag lumps, the S3-600 single shaft shredder with its 600 × 1000 mm side-feeding hopper handles dense blocks at 300–500 kg/hr, so confirm your material at a trial. If non-woven bags dominate your collection mix (common since the carry bag bans), see our non woven bag shredder page for that fabric. Mixed municipal streams carry moisture and dirt, so we recommend MS construction with periodic blade attention, and a feeding discipline that keeps stones and metal out of the chamber.
For the full route from loose bags to reusable plastic, read our guide to the polythene bag recycling machine line. If you are setting up a plastic waste recycling plant around bag waste, our recycling business guide covers the machines, the steps and what decides the cost.
Carry Bag Shredding Process, From Loose Bags to Granules
- Collection & sorting Bags are separated from paper, rigid plastic and wet waste. PVC film and metallised pouches go to separate lots
- De-baling & foreign-object check Compressed bales are loosened. Stones, metal and glass are removed before the material reaches the blades
- Dual shaft shredding Bags are fed loose. Interlocked blades grip the film and tear it into strips without wrapping
- Washing (if contaminated) Municipal-stream film is washed downstream to remove dirt and organics before melting
- Agglomeration & densification Shredded film is densified into crumb with enough bulk density for the extruder
- Pelletizing & reuse Reprocessed LDPE/HDPE granules go into pipes, sheets, new film and molded products
Recommended Carry Bag Shredder Machines
A dual shaft all-rounder for loose bags, a fabric specialist for non-woven streams, and a single shaft for baled lumps.
Technical Specifications Comparison
| Specification | Dual-Shaft Shredder | DS5007 Dual-Shaft Shredder | S3-600 Single Shaft Shredder |
|---|---|---|---|
| Machine type | Dual shaft shredder | Dual shaft shredder | Single shaft shredder |
| Motor power | 5.0 HP to 80.0 HP (13 models) | 7.5 HP / 5.52 kW | 30 HP / 22.07 kW |
| Capacity | 250-350 kg/hr to 2600-3000 kg/hr by model | 350-450 kg/hr | 300–500 kg/hr |
| Feed | Manual feeding, top hopper | Loose bags and fabric | 600 × 1000 mm side feeding hopper |
| Handles | Loose poly bags plus mixed plastic scrap | PP non-woven carry bags and fabric | Baled/compacted lumps, dense blocks |
| Output | Uneven shredded strips | Shredded fabric strips | Pieces sized by a 40 mm screen |
| Best for | Mixed bag and plastic streams | Non-woven-dominated streams | Dense baled film lumps |
| Get Quote → | Get Quote → | Get Quote → |
Plastic Bag Recycling Machine Applications and Industries
Bag waste comes from very different places, and where it comes from decides how it arrives and which machine it needs.
Municipal dry waste collection centres
Mixed poly bags from household dry waste, collected loose in gunny bags. Sort out paper, rigid plastic and wet waste, shred the film on a dual shaft shredder, then sell the shred or send it on to agglomeration.
Malls, retail and warehouses
Back-room carry bags and packaging film, usually cleaner than municipal film. These often skip washing and go from the shredder straight to agglomeration.
Kabadiwalas, aggregators and recyclers
Bags bought in bales from collectors. Loosen the bales and feed the film to the dual shaft, while dense, compacted lumps suit the S3-600 single shaft shredder.
Film reprocessors and agglomerator units
Shredded bag film as feed for agglomerators and densifiers, then the pellet line. Shredding first gives the agglomerator an even feed and lets you weigh and trade the material by the tonne.
What comes out of the carry bag shredder is an uneven strip, not granules. Washing, agglomeration and pelletizing follow it, and the reprocessed LDPE and HDPE go into pipes, sheets, new film and molded products.
Not sure which machine fits your bag waste?
Tell our technical team what your collection mix looks like (polythene, non-woven, baled or loose) and we’ll recommend the right machine, free.
Why Choose Raj Electricals
Building machines since 1985: carry bags, non-woven bags and cement sacks are documented applications on our dual shaft shredders.
Frequently Asked Questions
Is there really a market for shredded carry bags?
Yes, LDPE and HDPE film is one of the most reprocessed plastics in India. Once shredded, washed where needed and agglomerated, the material extrudes into reprocessed granules used in pipes, sheets, new film and molded goods. Film reprocessors and agglomerator operators buy shredded bag material by the tonne. What they will not buy is loose, unsorted bags, because the handling cost exceeds the material value. Shredding is the step that converts a storage nuisance into a tradeable raw material.
Why do plastic bags jam ordinary grinders and shredders?
Three behaviours: film floats, wraps and stretches. In a high-speed blade grinder, near-weightless bags ride the air current above the blades instead of entering the cut. Whatever does catch tends to wrap around the rotor shaft in layers until the motor stalls. And stretchy PE film absorbs blade impact instead of fracturing the way rigid plastic does. A dual shaft shredder avoids all three by gripping the film between interlocked, counter-rotating blades and tearing it through at low speed: see how the dual shaft platform works.
Can you put a garbage bag in a shredder?
Not in an office paper shredder: film wraps around its cutters and jams it. In an industrial dual shaft shredder, yes: empty garbage bags are LDPE or HDPE film like carry bags, and they shred the same way. Empty the bags first, and keep food and wet waste, glass, metal and stones out of the feed. Bags still full of mixed household waste need a waste processing line, not a plastic recycling machine.
Do collected bags need washing before shredding?
No, shred first, wash after. Washing whole bags is impractical: they trap water, nest inside each other and refuse to dry. The standard line order is sort, shred, then wash the shredded film, because small strips wash and dry far more efficiently. What you must do before shredding is remove non-film contaminants (stones, metal, glass and wet organic waste) both to protect the blades and to keep the output saleable. Clean retail and mall bags often skip washing entirely and go straight to agglomeration.
Can one machine handle polythene bags and non-woven bags together?
Mechanically, yes: a dual shaft shredder tears both, because the cutting action does not distinguish PE film from PP fabric. The issue is downstream: PE and PP are different polymers, and a mixed shred sells at mixed-plastic prices, while segregated streams each fetch more. If your collection is dominated by non-woven bags, the DS5007 dual shaft shredder with a sorted PP-only stream earns better realisation. Most dry-waste centres sort by bag type first and shred in campaign runs: same machine, separate batches.
What capacity does a municipal dry waste centre or aggregator need?
Work from your daily film intake in kilograms. We size the dual shaft model against that figure so an 8-hour shift clears your intake with steady feeding, comfortably ahead of most ward-level DWCC film volumes, which leaves headroom for growth or second-shift aggregation. Remember that loose bags feed slower than their rated weight suggests because of their volume, so practical throughput depends on feeding discipline. Send us your daily intake and we will size the machine, or walk through our machine selection guide first.
How much does a plastic shredder machine cost?
There is no list price, because every machine is quoted to the job. The price follows the type and model (a dual shaft shredder for loose bags, a single shaft for baled lumps), its capacity and motor, your material, MS or SS construction, options such as a conveyor or a control panel, and how you feed and discharge it. Our guide to plastic shredder machine price explains each factor. Send us your bag mix and daily intake and we will size the machine and quote it.
Can we see the machine run on our own collected bags first?
Yes. Collection-centre material varies enormously (moisture, dirt load, bag mix), so a trial on your actual material is the surest test. Bring a representative gunny or two from a normal collection day, not a cleaned-up sample, and you will see realistic feeding behaviour, throughput and output. Contact us to arrange one.
Get a Free Quote for a Plastic Carry Bag Shredder
Tell us your bag mix, daily intake and whether the material arrives loose or baled. Our technical team replies with a machine recommendation and a quotation. No spam, no obligation.
102/103/104, Madhu Industrial Estate, Old Nagardas Road, Mogra Lane, Andheri East, Mumbai – 400069
9:00 AM – 6:00 PM, all seven days
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