Understanding the relationship between dry cleaning and ironing requires looking at what dry cleaning actually achieves. Professional dry cleaning is a waterless cleaning process that uses a chemical solvent, usually perchloroethylene (also known as perc) or hydrocarbon solvents, to dissolve and lift stains, dirt, and oils from fabric. This process is essential for garments labeled "dry clean only," but it does not include the application of heat and pressure that defines ironing.
While dry cleaning cleans, it generally does not remove wrinkles. The chemical solvents used are excellent at cleaning but poor at pressing, leaving garments looking clean but often just as wrinkled as they were when dropped off. This is because the process involves garments tumbling freely inside a perforated drum, similar to a very gentle washing machine, without the application of a heated surface.
The Dry Cleaning and Ironing Process
Once the cleaning cycle is complete, the garments are removed from the machine. At this stage, they are clean but damp with residual solvent. The final step in the finishing process is often pressing or steaming, which serves a different function than a household iron. Pressing is done with a specialized press that uses heavy, flat pressure to force out wrinkles, while steaming uses targeted vapor to relax fabric fibers.
When Steam is Used
Many modern dry cleaning facilities utilize steam technology to aid in the finishing process. A presser will use a steam iron or a press to apply heat and moisture to specific areas of the garment. The steam helps to relax the fabric, making it easier to smooth out stubborn wrinkles without applying direct, intense heat to delicate fibers.
- Delicate fabrics like silk, wool, and rayon respond well to low-temperature steaming.
- Steam helps to kill bacteria and remove light odors that washing might miss.
- The combination of solvent cleaning and steaming results in a garment that is both fresh and presentable.
The Role of the Presser
The skill of the presser is crucial in determining the final look of a dry-cleaned item. They must understand the correct temperature and pressure for each fabric type to avoid shine or damage. A professional presser will use a tailor's ham, clappers, and steam to mold the garment to its original shape, which is particularly important for structured items like jackets and dress shirts.
| Fabric Type | Iron Temperature | Dry Clean Only Note |
|---|---|---|
| Silk | Low (Silk setting) | Requires gentle pressing with a press cloth |
| Wool | Medium | Prone to scorching; steam is preferred |
| Polyester | Medium-High | Can melt if iron is too hot |
| Linen | High | Requires moisture to avoid brittle spots |
The Home Ironing Dilemma
Some customers attempt to iron their dry clean only garments at home to save money or time. This practice is generally discouraged unless the care label specifically allows for ironing. Home irons operate at temperatures that can far exceed the tolerance of dry clean only fabrics, leading to shrinkage, scorching, or the dreaded shine on wool and silk.
To mitigate risk, if you must touch up a dry clean only item at home, always turn the garment inside out and use the lowest possible setting on your iron. Placing a thin cotton press cloth between the iron and the fabric is the best way to protect the fibers from direct heat. However, for valuable or delicate items, the safest method remains taking them to a professional cleaner who can perform a proper press during the finishing stage.
