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What Setting Do You Iron Polyester On?

Published in Ironing Fabrics 2 mins read

To iron polyester, you should use a cool to warm setting, typically around 300°F (148°C).

Polyester is a synthetic fabric that can melt or become damaged if exposed to high heat. Therefore, it's crucial to use a lower temperature setting on your iron. Based on the provided reference:

Optimal Iron Temperature for Polyester

The recommended temperature for ironing polyester is cool to warm (300°F/148°C). This is significantly lower than the settings used for natural fibers like cotton or linen.

Understanding Iron Settings

Iron temperature dials can vary, using different scales or fabric names. However, the general principle for polyester is to use a lower range:

  • Lower Settings: This means your iron should be set on one of its lower settings, potentially even its lowest.
  • Typical Number Settings: On irons that use number scales, the average setting for polyester is often a 1 or 2 maximum.

Using a temperature that is too high can cause permanent damage, such as melting, scorching, or creating shiny spots on the fabric.

Tips for Ironing Polyester

To safely iron polyester garments and achieve the best results:

  1. Check the Care Label: Always consult the garment's care label first, as it may provide specific ironing instructions.
  2. Use a Press Cloth: Placing a thin cloth (like a cotton handkerchief or a commercial press cloth) between the iron and the polyester fabric adds an extra layer of protection against heat damage.
  3. Iron Inside Out: Turning the garment inside out can also help prevent shiny marks on the right side of the fabric.
  4. Use Steam Sparingly (or Not at All): While some sources suggest low steam, high heat and steam can increase the risk of damage. Test on an inconspicuous area first if using steam.
  5. Keep the Iron Moving: Avoid leaving the iron stationary on one spot for too long.

By keeping the iron on a cool to warm setting (around 300°F / 148°C) and ideally using a protective layer, you can effectively smooth wrinkles in polyester without damaging the fabric.

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