What is perm press?

Permanent Press: A Blend of Convenience and Chemistry

<a href="https://www.wikiwhat.page/kavramlar/Permanent%20press">Permanent press</a>, also known as durable press, refers to fabrics and garments that have been treated to resist wrinkles and retain their shape after washing and wearing. This innovation aimed to reduce the need for ironing, making clothing care more convenient.

The key to permanent press lies in <a href="https://www.wikiwhat.page/kavramlar/Chemical%20treatment">chemical treatment</a>. Fabrics, usually blends of cotton and synthetic fibers like polyester, are treated with resins, often formaldehyde-based, that cross-link the cellulose molecules in the cotton. This process creates a sort of memory within the fabric, allowing it to return to its original shape after being stressed or creased.

While permanent press offers convenience, it also has drawbacks. Early formaldehyde-based treatments could release <a href="https://www.wikiwhat.page/kavramlar/Formaldehyde">formaldehyde</a>, which is a known irritant and potential carcinogen. Modern treatments use lower levels of formaldehyde or alternative chemicals to mitigate this risk. Additionally, permanent press fabrics can be less breathable than untreated fabrics and may be more difficult to alter or repair. The process can also weaken the fabric over time, leading to reduced durability.

<a href="https://www.wikiwhat.page/kavramlar/Care%20instructions">Care instructions</a> for permanent press garments typically involve machine washing and tumble drying on low heat. High heat can damage the resin treatment and cause shrinkage. It's also recommended to remove the garments promptly from the dryer to prevent wrinkles from setting in.