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  • Writer's pictureIan Haywood

What Temperature Is Best For Shrinking Shrink Film Through A Heat Tunnel?

The optimal temperature for shrinking shrink film through a heat tunnel depends on the type and thickness of the shrink film being used. Shrink films are typically made of materials like PVC, polyolefin, or polyethylene, and each of these materials has different shrink characteristics.

In general, the recommended temperature range for shrinking shrink film is between 300°F to 400°F (150°C to 200°C). However, always check the manufacturer's guidelines or specifications for the specific shrink film you are using, as they may have a recommended temperature range for their product.

It's essential to find the right balance between enough heat to achieve a tight and smooth wrap without damaging the film or causing it to burn. Higher temperatures may shrink the film more quickly, but they also increase the risk of damaging the product or creating uneven shrinkage.

Additionally, the speed at which the film passes through the heat tunnel and the tunnel's airflow can also affect the shrinkage process. It's essential to perform some tests with different temperature settings to determine the best combination for your specific application.

Always follow the safety guidelines and instructions provided by the shrink film manufacturer and the heat tunnel equipment manufacturer to ensure proper and safe usage.


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