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Drying and Hot Spot Detection

After fibres are produced from the spinner, the blankets formed are cooled by water sprays and may be treated with solvents. They must then be dried before further processing or use. However, the spinning process sometimes throws larger globs of glass or rock into the blanket, which can be dangerous.

These larger glass or rock globs cool at a significantly slower rate than the fibres, and may be surrounded by insulating material, so they retain their heat. This means that these undetected hot spots can start a fire long after leaving the production process, potentially during warehouse storage.

By detecting hot spots in the fibre blanket at an early stage, potentially catastrophic fires can be averted. The thermal images also help ensure the fibres are sufficiently dried after cooling.

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