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What is hot glue?

Updated: 9/24/2023
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10y ago

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Hot glue is a solid, waxy plastic material that joins materials by both cohesion and absorption. It is typically heated in a "glue gun" before being applied. Glue temperatures are primarily in ranges around 250°F (120°C) and 380°F (193°C). When it cools, any glue that has seeped into porous materials creates a hard bond. On non-porous materials, the adhesion is similar to other surface bonding glues.

Hot glue does not shrink much as it bonds (compared to volatile glues), does not require lengthy curing, and is water resistant. Most hot glues are not resistant to heat or chemical action, but some have greater tolerances.

Hot glue is used for corrugated cardboard, and for foam products that cannot be exposed to solvent glues. It is also used for some electronics applications where higher temperatures cannot be applied, and will normally not occur during operation.

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10y ago
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