Extruder Machines for Plastics & Film
Blown and cast film extrusion lines from Windmöller & Hölscher, recycling and reprocessing extruders from NGR, and laboratory and pilot extrusion from COLLIN. K Group is the authorized agent in Pakistan for all three.
Request a quoteWhat an extruder does, and who needs one
An extruder melts plastic and pushes it continuously through a die. What comes out the other side depends entirely on that die: a bubble of film, a flat web, a tube, a profile, or a strand that gets cut into pellets. The extruder itself is the same idea every time — a screw turning inside a heated barrel — but the machine built around it differs enormously depending on what you are making.
Three kinds of buyer come to this equipment. Film producers who need a complete line — extruder, die, cooling, haul-off and winder working as one machine — to make packaging film. Recyclers and converters who want to turn scrap, edge trim or flake back into usable pellets rather than sell it at scrap value. And developers, universities and QC labs who need the same processes at a scale where a few hundred grams of material is enough to prove something.
The distinction worth understanding early is between a line and a machine. A blown or cast film line is a building-sized installation with many subsystems, specified around your film structure and width. A recycling extruder is usually a single skid you feed. A lab extruder sits on a bench. All three are extrusion, and the buying process for each is completely different.
Film extrusion lines
Complete blown and cast film lines from Windmöller & Hölscher, for producers making packaging film at production scale.
VAREX II
W&H — blown filmModular blown film line for barrier, MDO and wide-film work.
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OPTIMEX II
W&H — blown filmBlown film machine for 3- and 5-layer PE film.
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AQUAREX
W&H — water quenchWater-quench blown film for high-gloss, high-clarity PE film.
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FILMEX II Stretch
W&H — cast filmCast line for stretch film production.
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FILMEX II CPP/CPE
W&H — cast filmCast line for CPP and CPE film.
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FILMEX II Barrier
W&H — cast filmCast line for barrier film production.
View details →Recycling and reprocessing extruders
NGR machines that take scrap, trim or flake and extrude it back into pellets. Machines that shred and extrude in one step — S:GRAN, A:GRAN and X:GRAN — are covered on our shredder machines page.
E:GRAN
NGR — film edge trimCompact repelletizing for film edge trim, in-line with the extruder.
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F:GRAN
NGR — flake reprocessingFor material that has already been shredded into flake.
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C:GRAN
NGR — wet & contaminatedThe cutting specialist for wet and contaminated material.
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C:GRAN-Twin
NGR — recycling & compoundingRecycling and compounding combined in one step.
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ECO-Twin 220
NGR — PET extrusionPET extrusion system built around twin-screw processing.
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P:REACT
NGR — food-grade PETFood-grade PET recycling, the first process with a positive EFSA opinion under the new EU rules.
View details →Laboratory and pilot extrusion
COLLIN lines for development, teaching and quality control, where the point is to run a real process on a small quantity of material.
Lab Line
COLLIN — laboratoryE and P series extruders and compounders, blown and flat film lines, calenders.
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Pilot Line
COLLIN — pilot scaleHigh-torque extruders, pilot blown and flat film lines, MDO stretching.
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Teach Line
COLLIN — teachingTable-top extruders, compounders, blown and flat film lines, roll mills.
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Medical Line
COLLIN — medicalMulti-lumen tube lines, medical extruders and compounders.
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Polytest Line
COLLIN — testingOnline rheometers and viscometers, pressure filter test.
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Food & Feed Line
COLLIN — food & feedHygienic single and twin-screw extruders, compounders and extrusion dies.
View details →Which extruder is right for you?
Five questions decide the machine, and we ask all five before quoting.
What are you actually making? The end product sets the die, and the die sets the line. Packaging film, stretch film, medical tubing and recycled pellets are four different machines, even though all four are extrusion.
What material, and in what condition? Virgin resin, regrind, wet post-consumer material and edge trim all behave differently in a screw. Contamination and moisture drive screw design, filtration and degassing more than anything else.
What form does the output take? A continuous web that gets wound, or pellets that get bagged. That single answer separates a film line from a recycling extruder and changes almost every downstream decision.
Single layer or multi-layer? Layer count drives the number of extruders, the die, and much of the cost. It is worth being honest early about whether you need barrier structures now or are building toward them.
New production line, or reprocessing what you already make? These are different budgets and different conversations. A converter adding an edge-trim recycler is solving a waste problem; a producer adding a film line is adding capacity.
What determines the price
We do not publish prices, because an extrusion line is not a catalogue item — two plants asking for “a blown film line” 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.
Width and layer count dominate. A wider die means more of everything — extruders, cooling, haul-off, winder — and each additional layer adds an extruder and complicates the die. These two decisions typically set the order of magnitude before anything else is discussed.
Automation level is the next largest factor. Gauge control, automatic profile correction, recipe management and automatic reel handling each add cost and each remove a source of daily variation. Whether they pay back depends on your labour, your scrap rate and how many changeovers you run.
Ancillary equipment is routinely underestimated: material handling and dosing, chillers and compressed air, extraction, trim recovery, and the winders and cores at the end. A line quoted without these is not a line you can run.
Installation, commissioning and training are real line items — foundations, power, shipping and the engineers who make it produce saleable film. We include them explicitly rather than leaving them to surprise you later.
Tell us what you want to produce and we will come back with a specification and a price for it.
The brands behind these machines
Windmöller & Hölscher — German manufacturers of blown film, cast film and printing machinery, and one of the reference names in flexible packaging production. Their VAREX, OPTIMEX, AQUAREX and FILMEX lines cover the film extrusion range. K Group is the authorized agent for W&H in Pakistan.
NGR — Austrian recycling-machinery manufacturers whose extruders turn production scrap, film trim and flake back into pellets, including food-grade PET. K Group is the authorized agent for NGR in Pakistan.
COLLIN — German builders of laboratory and pilot extrusion equipment used by developers, universities and QC labs to run production processes at development scale. K Group is the authorized agent for COLLIN in Pakistan.
Related: see also flexo printing machines.
Related: for coarse size reduction ahead of any of this, see shredder machines for plastics.
Interested in an extrusion line?
Speak to our machinery specialists in Pakistan for a tailored quotation.
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