Кратко: A 40ft footwear load arrived with wet outer cartons and localized mold risk after ocean temperature swings (“container rain”). Box-level silica gel could not stop ceiling drip. The fix combined container desiccant poles with sealed-box A505 chips on the next bookings.
| Тип клиента | Footwear exporter (anonymous) |
|---|---|
| Материал | Mixed footwear cartons |
| Маршрут | Asia → long-haul ocean |
| Срок в пути | Multi-week ocean |
| Проблема | Wet cartons / condensation in 40ft container |
| Продукты | Контейнерный осушитель poles + A505 |
| Результат | Next loads arrived dry at carton level (по данным клиента) |
Проблема
On discharge, inspectors found damp outer cartons and humidity damage near the top tiers. Inner silica gel packs were saturated in affected boxes.
Корневая причина
- Container micro-climate — Day/night and sea temperature swings drive condensation on the roof.
- Wrong layer of protection — Shoe-box desiccant cannot intercept drips from the container ceiling.
- Loading gaps — No pole placement map; poles omitted on a rush booking.
Решение
- Hang container desiccant poles per cubic capacity before sealing the doors.
- Keep box-level A505 for spore inhibition inside sealed shoe boxes.
- Photo-verify pole positions at loading and file with the booking.
Результат
Following bookings used poles + chips. The exporter reported dry carton exteriors on arrival for those loads (по данным клиента).
Ограничения
Контейнерный осушитель does not replace dry packing or repair wet cartons already loaded. Pole count depends on container size, cargo moisture, and route — ask for a load plan rather than copying a single number.
Релевантные данные испытаний
Box-level protection still relies on vapor-phase chips: Согласно отчёту № 2025FM00761R01D Гуандунского провинциального центра микробиологического анализа и испытаний (метод DA/T 26-2000, выдан 2025-02-26) — класс роста плесени 0, 28 дней, 8 видов, бумага/ткань/кожа — видимый рост отсутствует, A505 anti-mold chips inhibit spore germination throughout the test period.
FAQ
What is container rain in footwear shipping?
Condensation from the container ceiling that wets cartons during ocean temperature changes — separate from shoe-box humidity.
Can I skip box chips if I use poles?
Not for mold-prone uppers. Poles protect the container air; chips protect the sealed box micro-environment.