Used plastics processing machinery valuation
An injection moulding machine is a press with a thermal process attached. Its value sits in clamp force, shot size, screw wear and whether the moulds that made it useful are part of the deal.
Key facts
Used plastics processing machinery is valued on clamp force and shot size, screw and barrel wear, hydraulic or electric drive type, control generation, and the ancillary equipment needed to run a cycle: temperature controllers, dryers, chillers, robots and granulators. Moulds are a separate asset with separate ownership.
Injection moulding: clamp force, shot size and moulds
An injection moulding machine is specified by clamp force and shot size, and priced on how close those two figures sit to the work the buyer intends to run. A large machine running a small mould is paid for capacity it does not use, and buyers discount it accordingly.
Drive type matters commercially: all-electric machines carry a premium for energy use and repeatability, hydraulic machines are priced for the maintenance they will need. The control generation decides whether the buyer can store and repeat a process, which is the whole point of the machine.
Extrusion lines and the cost of a line that does not run
An extrusion line is a chain: extruder, die, calibration, cooling, haul-off, cutter and winder or stacker. Its value is set by the weakest station, not the newest one, because a line that stops at the winder produces nothing.
Screw and barrel condition is the first question. Wear shows in output and melt quality before it shows in a gauge, and a worn screw is a known replacement cost. Downstream equipment is priced on width, speed and the condition of rollers and drives.
Blow moulding, thermoforming and recycling
Blow moulding is priced on clamp force, the number of cavities and the state of the die head, with the mould set as a separate item. Thermoforming is priced on forming area, heating zones and the condition of the chain rails, which is where most of the mechanical wear appears.
Recycling equipment is priced on throughput, the condition of the rotor or screw, and the wear protection in the cutting chamber. Granulators and shredders are often undervalued by sellers because they are seen as support equipment, yet a buyer cannot run a line without them.
Wear parts: screws, barrels and hydraulic condition
Wear parts decide the second half of the range. Screw and barrel clearance, non-return valve condition, tie-bar and platen condition, and the state of the hydraulic oil and pumps are all measurable, and all are routinely asserted rather than measured.
A documented rebuild with invoices supports the upper part of the range. An undocumented machine is not assumed to be worn out, but the range widens to include the possibility, and the buyer prices the inspection they will have to do.
Ancillary equipment that decides whether a line runs
Temperature controllers, dryers, chillers, robots, conveyors, granulators and dosing units are the difference between a machine and a production cell. Buyers price them in, and sellers who list them separately usually recover less than they add to the machine.
The same applies to spare moulds, hot-runner systems and robot grippers. Where ownership of the moulds is unclear, the valuation flags it before the number is issued, because a machine without its tooling has a different buyer group.
Frequently asked questions
Do moulds count as part of the machine value?
No. Moulds are a separate asset with their own ownership and condition questions. They are valued as an item, and the machine is valued with or without them stated explicitly.
Is an all-electric machine always worth more?
It usually carries a premium for energy use and repeatability, but the premium depends on the buyer's work. For thick-wall, low-precision parts the advantage is smaller.
How is screw wear assessed?
By measurement and by output evidence: clearance, recovery time, melt quality and the history of any rebuild. Where measurement is missing, the range widens rather than assuming the worst.
Can a whole moulding shop be valued as one lot?
It can, and it usually sells at a discount to the sum of machines because the buyer takes on removal, recommissioning and the ones that do not fit their work.
Value moulding, extrusion or recycling equipment
Send the machine list with clamp force or line width, drive type, control and screw condition, plus the mould or tooling inventory. You will receive an initial range per asset.
Related pages:
- CNC machining valuation
- Food processing machinery valuation
- Plant closure machinery disposal
- Insolvency machinery sale valuation
Updated: 2026-11-02