How does the heat shrink wrap machine work?

As we have seen, heating pre-stretched polymer sheets allows the ordered molecules to move about and re-order themselves as a tangle of molecules, occupying a much smaller volume and causing the sheet to shrink.

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In practice, this means that putting, say, a shrink-wrap pallet cover over a pallet, and heating it the cover will start to contract and pull tight over the goods.

How to use heat shrink wrap involves the following steps:

• place goods on the pallet and loosely cover with a shrink-wrap pallet cover

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• make sure it covers everything

• gently heat to ensure even shrinkage

• when tight, stop and allow to cool.

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