Ocean shipping exposes filament to 30-35 days of 70-90% humidity and temperature swings from 10-45°C. Without proper packaging, filament absorbs moisture and arrives degraded. Here’s how professional packaging and documentation protect your order.
The Journey
| Stage | Duration | Risk | Protection |
|---|---|---|---|
| Factory to port | 2-5 days | Heat in container | Climate-controlled loading |
| Ocean transit | 25-35 days | Humidity 70-90% | Vacuum seal + desiccant |
| Port customs | 3-7 days | Temperature swings | Sealed packaging |
| Destination delivery | 1-3 days | Physical damage | Rigid carton + bubble wrap |
Vacuum-Sealed Packaging
Each spool is sealed in a multi-layer moisture-barrier bag with 2-3 packets of food-grade silica gel desiccant. The bag is heat-sealed (not zip-locked) to create an airtight barrier. This system is tested through 35-day simulated transit at 85% RH and 40°C.
Documentation
Every shipment includes:
- Commercial Invoice: Product names, quantities, unit values
- Packing List: Carton contents and weights
- Certificate of Analysis: Batch quality data
- Bill of Lading: Shipping document for customs clearance
- MSDS: Safety data for customs (some countries require)
What to Check on Arrival
- Vacuum seal integrity (bag should be tight around spool)
- Desiccant color (if indicator type — should not be pink)
- Spool weight (matches label)
- Diameter spot-check with micrometer (±0.03mm)
- Print a test object and compare with previous batches
Individual results depend on your printer, environment and application.