Projected area
Panel size and shape decide the clamping force and platen size.
Large & technical parts
Pallet & Large Panel Blow Molding Machines
Machines for hollow panels, pallets, barriers and other products with a large projected area, with published specifications side by side.
- Typical size
- Large projected area
- Materials
- HDPE
- Machine series
- Special-purpose machines · TDB
- Suggested models
- 2
In short
Large Panels & Pallets: what to know
Hollow panels, pallets, road barriers and table tops have a large projected area, so they need high clamping force and a large mold envelope. Tongda’s TDW-160E uses independent mold-locking cylinders for these products.
The TDW range uses an independent clamping arrangement. Product shape, mold size, projected area and required clamping force need to be considered together, along with the finished part’s load and use conditions.
Typical products
- Blow-molded pallets
- Table tops and benches
- Road barriers and guardrails
- Hollow panels and boards
Materials
- HDPE
Production process
How the production line works
- Step 01
Prepare the resin
Blow-molding grade resin, masterbatch and regrind are dosed to the product specification.
- Step 02
Extrude the parison
The extruder melts the material and the die head forms a hollow tube of controlled wall thickness.
- Step 03
Close and blow
The mold closes on the parison and compressed air forms the part against the cavity.
- Step 04
Cool and release
The part cools in the mold until it holds its shape, then the mold opens and the part is removed.
- Step 05
Trim and finish
Flash at the neck, handle and base is removed; necks are cut or reamed where required.
- Step 06
Inspect and pack
Weight, dimensions and leak tightness are checked before labeling and packing.
Selection guide
Choosing a machine
Wall distribution
Parison control keeps flat faces and corners consistent.
Load conditions
Pallets and barriers are designed and tested for their real loads.
Mold design
Ribs, inserts and kiss-offs strengthen the panel and affect cooling time.
Machine configurations
Large Panels & Pallets line configurations
TDW-160E
≤ 160 LExtrusion blow molding for large panels and tall, thin hollow products, with independent mold-locking cylinders.
- Stations
- Single
- Clamping
- 1200 kN
- Power
- 215 kW
TDB-160D
≤ 160 LAccumulator-head extrusion blow molding for 120–160 L products, with bottom blowing, servo drive and a larger platen configuration.
- Stations
- Single
- Clamping
- 740 kN
- Power
- 215 kW
| Model | Stations | Max. volume | Clamping force | Screw | Total power | Max. mold (W × H) | Datasheet |
|---|---|---|---|---|---|---|---|
| TDW-160E | Single | 160 L | 1200 kN | 120 mm | 215 kW | 1200 × 1900 mm | PDF · 1.5 MB |
| TDB-160D | Single | 160 L | 740 kN | 120 mm | 215 kW | 1000 × 1900 mm | PDF · 2.2 MB |
Suggested starting points from the published range. The final configuration depends on your product drawing, resin, weight and output target.
Video & product gallery
Large Panels & Pallets
Watch on YouTubeMachine in operation
See the large panels & pallets line running
Watch a Tongda machine producing this type of product, from parison extrusion to the finished part. For a video of a specific model or configuration, ask our team.
More machine videos
Questions from buyers
FAQ
Didn't find your answer?
Ask our engineersWhich machine makes blow-molded pallets?
The TDW-160E is designed for large panels and tall, thin hollow products. The TDB-160D is an alternative for some large parts.
Why is clamping force important for panels?
A large projected area produces a high opening force during blowing. The machine must hold the mold closed evenly across the panel.
Can you help with the panel design?
Our team can review the drawing for wall distribution, ribs and parting lines before the mold is made.
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