Features of Liquid Packaging Pouches
Liquid packaging pouches are mainly used for liquid products such as laundry detergent, fabric softener, shampoo and cleaning agents. Their features can be summarised in the following points, each of which matters once the filled pouch has to travel and be stored. One bag can also be matched with different spouts, which is how the same format covers such a range of products.
First, high mechanical strength, good heat sealing and firm closures. They suit both manual and automatic filling and sealing, and on a filling line they resist tearing under tension.
Second, good barrier performance: moisture-proof and waterproof, strongly airtight, with aroma retention, good oxygen resistance and puncture resistance, so they preserve the quality of the contents well.
Third, resistance to pressure and to dropping, without breaking or leaking. They can replace glass bottles and save on cost, and are currently a popular flexible packaging format internationally.
Fourth, strong protection: the contents are kept safe from bacteria and insects, the shape stays stable at high and low temperatures, and the pouch does not deform easily in transport or storage, so the product arrives looking as it did when it left the line.
In terms of the finished bag, the heat-seal strength is high, again resisting pressure and dropping without breaking or leaking. They can replace bottles, saving cost and improving a product's competitiveness in the market. With a spout added, the seal is strong and storage is easy, and they likewise suit manual and automatic filling and sealing.
These characteristics define where they fit: any liquid product that needs moisture protection, resistance to dropping and a lower packaging cost can consider this format. For a filling line, matching the bag type with the spout matters just as much, so selection should be confirmed together with the filling equipment. For a product that needs protection from moisture and a lower packaging cost, this is a format worth considering.
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