Watch a used 710×520 three-station positive/negative pressure thermoforming machine tested with custom molds for lunch boxes, fruit boxes and cake boxes before container loading and shipment.
For buyers planning food container, fruit box, cake box or tray production, a used three-station positive/negative pressure thermoforming machine must be checked with the correct mold and real product output before shipment. Photos can show machine appearance, but a factory test video helps confirm whether the machine, mold and product direction can work together.
This video shows a used 710×520 three-station thermoforming machine prepared for a customer project. WEIXIN Machinery customizes the mold according to the customer's product requirement, tests the machine, confirms qualified products, and arranges container loading and shipment after approval.
Why 710×520 Three-Station Thermoforming Matters
The 710×520 mm forming area is a practical direction for many disposable plastic packaging products. Compared with a plastic cup making machine, a three-station thermoforming machine is more suitable for flatter packaging products such as food containers, trays, fruit boxes, cake boxes and lids.
Positive and negative pressure forming gives better support than simple vacuum forming for many packaging products. It helps the sheet material fit the mold shape more clearly when the heating, air pressure, vacuum, mold and cutting structure are matched correctly.
Suitable Products
This machine direction can be used for products such as:
- Disposable lunch boxes
- Food containers
- Fruit boxes
- Cake boxes
- Plastic trays
- Takeaway boxes
- Packaging lids
- Similar thermoformed packaging products
The final product result still depends on material, sheet thickness, product depth, mold design and cutting layout.
Why Custom Mold Testing Is Important
For a thermoforming project, the mold decides whether the product shape, cutting edge and stacking result can meet the buyer's requirement. A used machine alone is not enough; it must be matched with the correct mold and real product test.
Custom mold testing helps confirm:
- Whether the product shape can be formed clearly
- Whether the mold matches the 710×520 forming area
- Whether the cutting and stacking direction is practical
- Whether the finished product is qualified before shipment
- Whether the buyer can approve the real production result before loading
For overseas buyers, this is a key risk-control step before arranging final payment and shipment.
Used Machine Inspection Before Shipment
A used three-station thermoforming machine should be checked before export delivery. The buyer should not rely only on a machine name or old photos.
Important checking points include:
- Forming area and product size matching
- Material type, such as PP, PS, PET or PLA
- Sheet thickness range
- Mold layout and product cavity design
- Heating, forming, cutting and stacking sections
- Positive and negative pressure system condition
- Electrical cabinet and control system condition
- Test video with real product output
- Container loading and shipment confirmation
- Whether upstream sheet extrusion equipment is needed
A real test and loading video helps the buyer see that the machine has moved from stock status to shipment preparation.
Complete Line Thinking
A used 710×520 three-station thermoforming machine can be supplied as one machine if the buyer already has sheet supply and auxiliary equipment. But for many factory projects, the better plan is a complete thermoforming production solution.
A complete production direction may include:
- PP/PS/PET sheet extrusion line
- Three-station thermoforming machine
- Custom product mold
- Chiller
- Air compressor
- Vacuum pump
- Crusher and recycling support
- Packing and stacking support
This complete-line view helps buyers avoid purchasing a used machine that cannot match their real product or material plan.
What Buyers Should Send Before Quotation
To check whether a used 710×520 three-station thermoforming machine is suitable, buyers should send:
- Product photo or drawing
- Product length, width and height
- Material type
- Sheet thickness
- Mold cavity requirement if known
- Target output
- Whether sheet extrusion equipment is already available
- Destination country and factory voltage
- New or used machine preference
With these details, WEIXIN Machinery can check the right machine direction, mold requirement, auxiliary equipment and complete production line matching.
FAQ
What products can a 710×520 three-station thermoforming machine make?
It can be used for lunch boxes, food containers, fruit boxes, cake boxes, trays, lids and similar plastic packaging products, depending on mold design and material selection.
Is this the same as a plastic cup making machine?
No. A cup making machine is normally used for deeper cups and bowls. A three-station thermoforming machine is more suitable for food boxes, trays, lids and flatter packaging products.
Why is custom mold testing needed before shipment?
Because the finished product quality depends on machine condition, mold design, sheet material and cutting layout. Testing with the customer's mold helps confirm qualified product output before loading.
Can this machine be matched with a sheet extrusion line?
Yes. If the buyer wants in-house sheet production, it can be matched with a PP/PS/PET sheet extrusion line according to sheet width, thickness and product needs.
Need a Used 710×520 Three-Station Thermoforming Machine?
If you need a used three-station positive/negative pressure thermoforming machine for lunch boxes, fruit boxes, cake boxes or food containers, send your product photo, size, material, sheet thickness and target output. WEIXIN Machinery can help check the machine, custom mold and complete production line direction before quotation.