How to Seal Shrink Wrap

Written by elyse gibbons
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How to Seal Shrink Wrap
Shrink wrap was once used for industrial purposes, but it has now found its way into the home. (wrapped bread image by Karin Lau from

Shrink wrap is a special plastic that when heat treated will shrink and mould to shape. Shrink-wrapping food, dishes and packages provides you with a quick and easy solution to seal goods without having to buy costly equipment. Shrink-wrap bags are used to package almost any product for preservation and protection. A sealer is a small machine that seals shrink-wrap bags, but it can also be quite costly. A household hair dryer will use heat to shrivel the shrink wrap around any item at little to no cost.

Skill level:

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Things you need

  • Shrink wrap
  • Scissors
  • Blow dryer
  • Vacuum pump

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  1. 1

    Analyse what needs to be wrapped and gather the tools. Shrink wrap comes in various-sized sheets, rolls and tubes. Use the proper amount of shrink wrap required. Scissors might be needed to cut the shrink wrap, and a source of heat is required. Most people already own a pair of scissors or knife, and a hair dryer.

  2. 2

    Cut a piece of film that is large enough to go all the way around the object to be wrapped; a single sheet is preferred. Always cut a shape that is slightly larger than what is needed as the heat will cause the wrap to shrink (plus, any excess can be trimmed off later).

  3. 3

    Press the film around the object firmly. For larger items, such as a box, a vacuum pump can be used to remove large amounts of trapped air.

  4. 4

    Apply heat to the shrink-wrapped object with a household blow dryer as evenly as possible. Swiftly wave the dryer over the shrink wrap and the heat will begin to shrivel the bag around the item. The entire surface area should be dried to obtain uniform shrinkage. Stop drying when satisfied with the results.

Tips and warnings

  • With some professional equipment and a little practice, anyone can produce near-perfect results every time. If sealing shrink wrap is done often, it is recommended to buy more expensive machinery to streamline the process.

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