由 caicai8478 In the grand discourse of international logistics, people often focus on speed, price, and anti-collision. However, there is a silent threat, it is invisible and has no quality, but it can destroy valuable goods without realizing it. It is——humidity and water.
Against this threat, there are a series of seemingly invisible but crucial “invisible guardians”: waterproofing and tide-proof packaging. They don’t draw attention like a sturdy outer box, but they constitute the last line of protection for the goods and are also the most important line of defense.
- “无形之教”: moisture from where?
Understanding the enemy is the first step to victory. The source of water in international transportation is more complicated than you might think:
Ocean environment: Container box in ocean shipping, Being in a high-salt, high-humidity ocean atmosphere for a long time, the temperature difference between day and night is huge.
“集装箱雨”: This is the most typical threat. When the collection box moves from the 寒冷 region to the warmer region, or when the temperature difference between day and night is strong, the water vapor in the air in the box will condense on the top wall of the box and the inner wall to form water beads, and it will fall down, as if it were raining inside the box.
雨水 & 洪水: When the cargo is waiting for loading, unloading, or transit in the open air yard, it may encounter stormy rain or 洪水.
Moisture itself: Even if there is no liquid water, a long-term high humidity environment (such as shipping) is enough to cause metal products to rust, electronic products to become damp, and paper packaging to become soft and moldy.
2、“守护者”’s armor: water-proof and tide-proof solutions
For different levels of threats, we need different levels of protection strategies.
- Basic protection: 防潮袋（Desiccant）— Anti-humidity
What it is: common silica gel desiccant (小包), chlor化calcium desiccant (吸湿能动更强).
How it works: They are like “sponges in the air” and actively absorb moisture from the environment inside the packaging, keeping the humidity below the safety threshold.
Applicable scenes: electronic products, instruments, metal parts, clothing, food, medicine, and any items sensitive to humidity. It is the first line of defense against rust and mildew.
- Middle class protection: waterproof and waterproof
Bubble Wrap: Not only shockproof, its plastic material also has certain waterproof properties.
Stretch Film/Pallet Wrap: Use plastic film to wrap the entire paper box or pallet in layers to form a uniform waterproof barrier, effectively preventing small amounts of water from splashing and moisture intrusion.
Waterproof inner bag: For goods that are particularly afraid of water, they can be sealed in a thick polyethylene plastic inner bag.
- Advanced protection: 外箱 waterproof treatment —— Frontal resistance
Waterproof coated paper box: The surface of the paper box is treated with wax or plastic coating, and its pressure resistance and waterproof performance are far superior to ordinary corrugated paper boxes.
All-round wrapping with wrapping film: After finishing the pallet, wrap the entire pallet tightly from top to bottom in several layers with wrapping film. This is currently the most cost-effective way to protect the entire cargo, and can withstand “集装米雨” and outdoor rainwater.
- Ultimate protection: 集装箱内引物 —— environmental class solution
Container desiccant bag: specially designed for container shipping, super-large size and moisture absorption, usually hung on the inner wall of the container, can effectively control the humidity inside the container, and prevent “container rain”.
Waterproof oil cloth (Tarpaulin): Waterproof oil cloth on the cargo cover inside the box, multiple layers of protection.
Cargo mat （Dunnage Bag): The air bladder filled between the goods can not only prevent the goods from shifting, but its plastic material can also block the flow of water vapor between different goods.
三、How to choose “hidden guardian” for your goods?
Cargo Type Main Risk Recommended Protection Plan
普通品商（clothing、daily goods) 受洗发预、北行法防泰袋 + wrapping film package outer box
Electronic products, precision instruments, metal interface oxidation, reinforced waterproof bag + waterproof inner bag, sealed + wrapped film wrap outer box
Metal products, machinery equipment rust, functional damage, large amount of waterproof bag + anti-rust oil/paper + wrapping film all around
Furniture、木质品受潮法、发頄集装箱 Desiccant + wrapping film whole
防泰袋 + Strictly controlled transport environment
Conclusion
In this long and variable journey of international transportation, the biggest risks are often those that cannot be seen. A successful shipment depends not only on whether the goods arrive quickly, but also on whether they arrive in perfect condition.
Investing in waterproof protection is like hiring a silent and reliable “hidden guardian” for your goods. It’s not expensive, but it can greatly avoid huge potential losses, protect your business reputation, and let you really achieve it – within the strategy, the goods will arrive safely.