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ASTM F2153 – Test for Bag Capacity

We are often asked how we consistently measure the size or capacity of our bags when they are complicated shapes and it would be impractical to actually fill them with water to measure the total capacity. In simple terms there is an international standard which we work to that is given the catchy title F2153 […]

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What is heat welding of flexible plastics?

Heat welding of flexible plastics is a way of creating a physical molecular bond between two materials which are melted and pressed together until they cool and bond. The technique has been used widely for bonding vinyl and other similar materials in everything from advertising banners to truck sides and even roofing materials. It has […]

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What is high frequency welding?

High frequency welding – which is also known as radio frequency welding – is a technique for passing extremely intense vibrations through a brass bar and onto two or more pieces of material with such an effect that the material melts underneath the bar. Once the vibrations stop, the material re-forms as a solid having […]

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What are taped seams?

In outdoor clothing and bags a technology called seam taping has been around for a number of years and to explain it quite simply it is a process whereby the holes made from sewing two pieces of material together are coated with a sticky or melted plastic tape which ensures that water can’t pass through […]

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What does Hydrostatic Head Testing refer to?

Hydrostatic head or sometimes just HH is an outdoor industry standard way of measuring how much force it takes to force water through a piece of fabric. The way that it is measured is by clamping a piece of fabric over the bottom of the tube and slowly filling the tube with water. The hydrostatic […]

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How to properly seal a dry bag

The key to getting a waterproof seal on a dry bag is to ensure that the first fold is as tight and crisp as possible. It is this fold which creates a waterproof barrier to stop any ingress. Once you have ensured that fold is as neat as possible then it is also important to […]