The highest force during trucking is in the accelerating or braking process, and transportation often causes movement and impacts on goods. During shipping, the heavy seas cause intense forces that may result in cargo movement. Transporting goods by rail may set forces four times higher than from sea or road transit. Vertical driving direction and reverse forces are incredibly tremendous. Thus, dunnage bags are recommended with the strapping and lashing system to secure cargo.
Dunnage Bags are used to secure cargo and create a bulkhead during transit. These bags are great Void Fillers to prevent movement and absorb impacts in a sea container, rail car, truck, vessel, or intermodal. Dunnage bags combine in-liner(also known as the bladder or balloon), which holds the compressed airtight at high-pressure levels, and out-liner (the cover) to give the bag shape, stability, and enormous strength. To ensure tightness even under high pressure, dunnage bags in-liner are made of specially extruded polyethene (PE-mixture).
At Humi Pak, the out-liner of the dunnage bags comes in two different materials – Kraft Paper and Woven Polypropylene (PP). Available in 1, 2, 4, and 6 ply, these bags can be applied to the in-liner in multiple layers, making it extremely strong. Woven PP dunnage bags make an excellent alternative to Paper Dunnage Bags as they are lighter and recyclable, and in addition, it is also water-resistant. During application, place the Dunnage Bags in the gaps between the cargo and start inflating the dunnage bag with compressed air. To fill the bags, use our valve systems.
At Humi Pak, the two types of valve systems available are standard valve and mega flow fast filling valve. The bag is filled enough when it sits tight and unmovable in the vault. Ensure that the bags are not overfilled with compressed air to avoid damage to the cargo.