Shredder Machines for Plastics
Coarse size reduction for plastics recycling and production waste — single-shaft, double-shaft and combined shredder-granulator machines from Herbold and Lundberg Tech, with NGR shredder-extruder combinations. K Group is the authorized agent in Pakistan.
Request a quoteWhat a plastics shredder does, and who needs one
A shredder is the first machine in most size-reduction lines. It takes material that is too large, too thick or too awkward to feed anything else — purge lumps, rejected mouldings, pipe, sheet, bales, drums, film rolls — and reduces it to a coarse, conveyable fraction. What comes out is not yet regranulate; it is material a granulator, washing line or extruder can actually accept.
Three kinds of plant tend to need one. Recyclers processing post-consumer or post-industrial material, where input arrives baled or mixed and nothing downstream can take it as delivered. Converters generating production waste — start-up lumps, edge trim, rejected parts — who want to put that material back through their own process rather than sell it at scrap value. And processors handling bulky rigid items, where the problem is simply that the part will not fit through a granulator throat.
The distinction that matters most in practice is between shredding and granulating. A shredder runs slowly with high torque and is built to survive contamination and inconsistent input. A granulator runs fast and produces a controlled particle size, but is far less tolerant of what you feed it. Many plants need both, in sequence.
Shredders we supply
EWS / DWS
Herbold — single & double-shaftSingle-shaft and double-shaft shredders for bulky, thick-walled plastics and mixed input.
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WasteShredder
Lundberg Tech — bulk item shredderBulk item shredding for production waste, rejected parts and offcuts at the machine.
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HGM
Herbold — shredder-granulatorShredding and granulating in one housing, where floor space and handling steps matter.
View details →Shredder-extruder combinations
These shred and extrude in one step, so what leaves the machine is regranulate rather than flake — worth considering if your goal is pellets you can feed straight back into production.
S:GRAN
NGR — shredder-feeder-extruderNGR's flagship shredder-feeder-extruder for industrial scrap, shredding straight into the screw.
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A:GRAN
NGR — compact combinationA compact shredder-feeder-extruder for scrap created in industrial processes.
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X:GRAN
NGR — high outputA high-output shredder-feeder-extruder for plastic waste of varied shapes and sizes.
View details →Which shredder is right for you?
Five questions decide the machine, and we ask all five before quoting.
What is the input, physically? Not the polymer — the form. Bales, lumps, pipe, sheet, film on cores and rejected mouldings all load a rotor differently, and the same material in two forms can point at two different machines.
How contaminated is it? Post-consumer material carries metal, stone and grit. That drives cutter material, screen design and how much protection the machine needs upstream and downstream.
What happens next? A shredder feeding a washing line has a different job from one feeding a granulator or an extruder. The downstream machine sets the output specification, not the shredder.
What output size do you actually need? Coarse output is cheaper to produce and easier on the machine. Asking a shredder for a fine, tightly-controlled particle is usually the wrong tool — that is a granulator's job.
Single-shaft, double-shaft, or a combination? Single-shaft with a hydraulic ram suits bulky, thick-walled parts. Double-shaft handles awkward mixed input at lower speed. A combined shredder-granulator does both jobs in one housing where floor space is short.
One more thing worth knowing: if your input is genuinely oversized — full bales, large pipe sections, complete rolls — the answer may be a pre-cutting stage rather than a bigger shredder. Herbold's HGS guillotine exists for exactly that.
What determines the price
We do not publish prices, because a shredder is not a catalogue item — two plants asking for “a plastic shredder” can be quoted very differently. What we can do is be clear about what moves the number, so you can size a budget before asking.
Rotor design and shaft count set the starting point. A single-shaft machine with a hydraulic ram, a double-shaft machine running slowly on mixed input, and a combined shredder-granulator are three different builds. Rotor diameter and length, cutter geometry and how the knives are held all follow from that choice.
Input material and contamination drive the specification harder than most buyers expect. Clean production scrap is undemanding. Post-consumer material carrying metal, stone and grit calls for tougher cutter material, heavier bearings and protection upstream and downstream — and that is a different machine, not an option on the same one.
Output size and throughput class pull in opposite directions. A finer, more tightly controlled output means a smaller screen and more work per kilogram, so holding throughput while reducing particle size costs more on both counts. Being honest about what the downstream process actually needs is the cheapest decision available.
Ancillary equipment is routinely underestimated: infeed conveyors and hoppers, metal detection and magnets to protect the rotor, extraction, and the granulator or washing line the shredder feeds. A shredder quoted alone is rarely a working installation.
Installation, commissioning and training are real line items — foundations, power, shipping and the engineers who commission the machine and teach your operators to change knives safely. We include them explicitly rather than leaving them to surprise you later.
Tell us what you need to shred and we will come back with a specification and a price for it.
The brands behind these machines
Herbold Meckesheim — German size-reduction and washing specialists whose range spans shredders, granulators, pulverizers, plastcompactors and complete washing lines. Their EWS and DWS shredders and the HGM shredder-granulator sit at the coarse end of that range. K Group is the authorized agent for Herbold in Pakistan.
Lundberg Tech — Danish waste-handling specialists focused on capturing production waste at the machine that makes it, rather than trucking it away. The WasteShredder handles bulky rejects and offcuts as part of that approach. K Group is the authorized agent for Lundberg Tech in Pakistan.
NGR — Austrian recycling-machinery manufacturers whose single-step machines combine shredding, feeding and extrusion so that scrap becomes regranulate in one pass. K Group is the authorized agent for NGR in Pakistan.
Related: see also flexo printing machines.
Related: for melting and repelletizing what comes out of a shredder, see extruder machines for plastics & film.
Interested in a shredder for your plant?
Speak to our machinery specialists in Pakistan for a tailored quotation.
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