Haiwang waterproof corrugated boxes replace wax boxes for produce, seafood and cold-chain goods. Our water-resistant board reaches Cobb < 30 g/m², so the boxes hold up to ice, condensation and humid sea routes. Every box is made to your size and print, in A, B, C or E flute, and shipped flat from our factory near Qingdao Port.
The board absorbs less than 30 grams of water per square metre, for wet, iced and humid conditions.
Water-resistant board holds its stacking strength better than untreated board in cold rooms and humid containers.
Replace wax boxes with corrugated boxes that need no wax coating and go into the paper recycling stream.
Water-based flexo printing in up to 4 colours, or digital printing with no plates and no minimum run.
Waxed cardboard works in the cold room, but the wax coating makes it hard to recycle. Many recycling centres reject it, so used wax boxes often end up in landfill.
Our waterproof corrugated boxes reach Cobb < 30 g/m² without a wax coating, print cleanly and are made from FSC-certified board. For buyers with recycling targets, they are a simpler box to source. Shipping heavy loads as well? See our heavy-duty shipping boxes.
We reply within 24 hours.
Waterproof shipping boxes made to your size, flute and print, with Cobb < 30 g/m² water resistance.
| Specification | Haiwang Waterproof Corrugated Boxes |
|---|---|
| Water resistance | Cobb < 30 g/m² |
| Box size | Custom, made to your dimensions |
| Board construction | 3-layer, 4-layer and 5-layer corrugated |
| Flute types | A, B, C, E |
| Box styles | Regular slotted · Telescopic lid & base · Die-cut with vent and hand holes · Custom shapes |
| Inner fittings | Corrugated partitions and dividers |
| Printing | Water-based flexo up to 4 colours · Digital printing, no plates, no minimum run |
| Max board width | 2,800 mm (Marquip corrugator) |
| Quality testing | Box compression & stacking · ECT · RCT · FCT · PAT · Burst · Tensile |
| Certifications | FSC COC (SGSHK-COC-310706) · ISO 9001 · ISO 14001 · ISO 45001 · AEO |
| Daily capacity | 300,000 m² of board and boxes |
| Shipping | Shipped flat from our factory near Qingdao Port |
From your sample request to boxes at your dock in four steps.
Send your box size, product and storage conditions. We recommend the board, flute and box style.
A physical sample made to Cobb < 30, for you to test in your own cold room or packing line.
Bulk run on our 2,800 mm Marquip corrugator with in-line quality monitoring.
Flat-packed, palletized and shipped FOB Qingdao or door to door.
Measures the stacking strength of the board edge.
Confirms how much top load the finished box holds when stacked.
Checks resistance to puncture and internal pressure.
Verifies the strength of liner and medium papers.
Checks flute rigidity under flat pressure.
Ensures the layers stay bonded under load.
Answers to what buyers ask most when switching from wax boxes. Don’t see yours? Send us a message below.
It means the board absorbs less than 30 grams of water per square metre in the Cobb test. The lower the Cobb value, the better the box resists water, ice and condensation.
No. A wax box is dipped in or coated with wax. Our boxes reach Cobb < 30 g/m² with a water-resistant treatment instead of wax, which is why buyers use them to replace wax boxes.
Yes. With no wax coating, they go into the paper recycling stream, unlike waxed cardboard, which many recyclers reject.
Yes. They are made for iced, chilled and frozen goods and for humid containers on long sea routes.
Yes. Buyers use them in place of wax boxes for seafood, poultry and fresh produce. For vented produce cartons, see our agricultural cartons.
Yes. We print in up to 4 colours with water-based flexo, or digitally with no plates and no minimum run.
