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Pu foam expanding

When you have your little repair project around the house, such as blocking a hole or filling a gap, Haohai PU foam is a good assistant! You might have noticed how it swells up after you spray it out of the can. So how does this Haohai expandable filler foam work? 

PU foam is short for polyurethane foam, a peculiar material which expands when it is in contact with air. There are two primary components inside the can that combine when you press the button and spray: polyol resin and isocyanate. When the two ingredients mix, they cause a chemical reaction that generates a gas. This gas gets trapped in the bubbles of the foam, making it expand and grow larger. 

How to Properly Use PU Foam for Maximum Expansion?

Here are a few things to remember to ensure you get the best performance from your Haohai PU foam. Shake the can well before opening to ensure that the ingredients are thoroughly mixed. Then, when you’re ready to clean, hold the can upside down and spray momentarily before each use in order to eliminate trapped air in the nozzle which can lead to the foam drying and clogging it. Clean the nozzles by just wiping it with a damp cloth every after use. Lastly, work in a well-ventilated space to ensure you don’t breathe in any fumes from the foam itself. 

Why choose Haohai Pu foam expanding?

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