How Do Dry Cleaners Clean Clothing

TL;DR

Dry cleaning dates back to Ancient Rome and has evolved over time to become a safer and more efficient process using chemicals like tetrachloroethylene. Despite its effectiveness, concerns have been raised about the environmental and health impact of its primary solvent, perchloroethylene.

Transcript

What happens to clothes after being dropped off at the dry cleaners is a mystery to most. We know that our clothes come back a whole lot cleaner than when we dropped them off, but how? And who first got the bright idea to clean clothing without water? The earliest records of professional dry cleaning go all the way back to the Ancient Romans. For i... Read More

Key Insights

• 🧑‍🤝‍🧑 Dry cleaning has a long history, dating back to Ancient Rome and evolving over time.
• 💳 Jean Baptiste Jolly is credited with the modern dry cleaning method using turpentine, while Thomas Jennings invented his own dry scouring technique.
• 🥺 Early dry cleaning solvents were highly flammable and caused odor issues, leading to the search for safer alternatives.
• ❤️‍🔥 Chlorinated solvents like perchloroethylene became the go-to solvent due to their stain-removing capabilities and reduced fire risk.

Questions & Answers

Q: How did dry cleaning evolve from Ancient Rome to modern methods?

Dry cleaning started with fullers using clay and ammonia in Ancient Rome, and later Jean Baptiste Jolly discovered the use of turpentine. Thomas Jennings introduced his own dry scouring method in 1821, which paved the way for the modern dry cleaning process.

Q: What were the dangers associated with early dry cleaning solvents?

Early dry cleaning solvents like turpentine and benzene were highly flammable and could leave clothes with unpleasant odors. They posed significant risks of fire and toxicity to dry cleaners and customers.

Q: What led to the adoption of chlorinated solvents in dry cleaning?

The major risk of fire from flammable solvents pushed dry cleaners to search for a safer alternative. Chlorinated solvents like tetrachloroethylene, or "perc," gained popularity in the early 20th century due to their stain-removing capabilities without the risk of fire.

Q: Why is there concern about the use of perchloroethylene in dry cleaning?

Perchloroethylene, or "perc," is considered safe when wearing dry-cleaned clothes. However, the EPA is working to phase out perc due to its toxicity to plants and animals if accidentally released into the environment. Long-term exposure for industry workers may also pose health risks.

Summary & Key Takeaways

• Dry cleaning originated in Ancient Rome, where fullers used clay and ammonia to remove stains from delicate fabrics.

• The modern dry cleaning method was discovered by Jean Baptiste Jolly in the early 19th century, using turpentine as a solvent.

• Thomas Jennings, an African American tailor, invented and patented his own dry cleaning method in 1821, using dry scouring techniques.