A real used three-station positive/negative pressure thermoforming machine with 910×710 mm forming area for lunch boxes, fruit boxes, egg trays, food packaging, plates, biscuit boxes and seedling trays.
For buyers searching a used three-station thermoforming machine, the first question should not be only the price. The machine must match the product size, material, sheet thickness, mold layout and cutting requirement. This used positive/negative pressure thermoforming machine is suitable for factories planning food packaging, tray and box production with a controlled equipment budget.
This machine is a 2021 used three-station positive/negative pressure thermoforming machine. The forming area is 910×710 mm, and it is designed for PP, PS, PET, PLA and PVC sheet with 0.2–2.0 mm thickness. The control system uses Delta PLC and Delta control screen. The machine has upper and lower mold movement, upper and lower punching, sheet pulling and stacker lowering servo control.
What Products Can This Machine Make?
Based on the sample products provided, this machine direction can be used for:
- Disposable lunch boxes - Fruit boxes and clear clamshell packaging - Egg trays - Food packaging trays - Product packaging inserts - Food plates - Biscuit boxes - Seedling trays
For buyers comparing a [used thermoforming machine](/used-machines.html#thermoforming), these samples are important because they show the practical application range. A three-station machine is usually selected when the product needs forming, punching/cutting and stacking in one production line.
Key Machine Information
The confirmed information for this machine includes:
- Machine type: used three-station positive/negative pressure thermoforming machine - Forming area: 910×710 mm - Suitable materials: PP, PS, PET, PLA, PVC - Sheet thickness: 0.2–2.0 mm - Control system: Delta PLC and Delta control screen - Upper mold motor: 4.5 kW - Lower mold motor: 4.5 kW - Upper punching motor: 5.5 kW - Lower punching motor: 5.5 kW - Sheet pulling motor: 4.5 kW - Stacker lowering servo: 2 kW - Power supply: 380V/50Hz, three-phase - Working efficiency: 5–15 molds/min, depending on material thickness - Production year: 2021 - Servo brand: Delta
Why Positive/Negative Pressure Matters
Positive and negative pressure forming gives more forming support than simple vacuum forming. For products such as lunch boxes, fruit boxes, egg trays and food packaging trays, the material must be pulled into the mold shape clearly. If the air pressure, vacuum, heating and mold design are not matched, the tray corners may be weak or the product thickness may not be even.
This is why buyers should provide real product photos before quotation. The same machine may need different molds, heating settings and cutting designs for egg trays, biscuit boxes or food containers.
Used Machine Buying Checks
Before buying a second-hand three-station thermoforming machine, check:
- Whether the machine can power on and run normally - Heating area and temperature control condition - Upper/lower mold movement condition - Punching and cutting station condition - Sheet pulling accuracy - PLC and control screen condition - Air, vacuum and cooling connection - Whether a test-run video can be provided before shipment - Whether the machine will be packed safely for export
A used machine is not the same as a new machine. The value comes from real condition, visible machine photos, practical test checking and product matching.
Machine Direction Compared with Vacuum Forming
If the product is a simple blister tray or insert, a [vacuum forming machine](/products/vacuum-forming-machine.html) may be enough. If the buyer needs higher-efficiency food boxes, trays or packaging products with forming and cutting in one line, a [three-station thermoforming machine](/products/thermoforming-machine.html) is usually the better direction.
What Buyers Should Send Before Quotation
Please send product photo, size, material, sheet thickness, forming depth, target output, voltage and destination port. WEIXIN Machinery can check whether this used 9171 three-station positive/negative pressure thermoforming machine matches your product, or whether another used machine is more suitable.