Drip-dry: the one-blouse world flight, memory-foam cotton, the dryer cool-down
In the spring of 1964, a pilot named Jerrie Mock flew 23,103 miles around the world, alone, wearing just one white blouse that she washed in a hotel sink every night. Hey, I'm Salt. I'm Grace. Wait—what? She only packed one shirt for the whole trip?
One white blouse and a single blue skirt outfit. It was a genuinely historic flight. Mock was the first woman to fly solo around the world. The trip took 29 days, stretching from March 19th to April 17th, 1964. But the secret to her wardrobe was the fabric itself.
That blouse was synthetic, which meant it was drip-dry. Okay, drip-dry. That's a phrase you hear in old advertisements, but what did it actually mean in practice back then? It meant liberation from the ironing board. Before the 1950s, you know, maintaining a wardrobe was, like, a grueling part-time job because you were boiling cottons on the stove, you were—starch was a whole ordeal by hand, and then you spent hours doing heavy ironing just to look presentable for the office.
Right, because untreated natural fibers just hold every single crease from the wash. Exactly. So in 1951, DuPont launches Dacron polyester. And it kicks off this huge shift in how households managed laundry with wash-and-wear clothing. You wash it, hang it up dripping wet in the bathroom, and by morning the water weight has pulled the wrinkles out.
Which is how you get around the world with no luggage. Yeah, the Smithsonian records show Mock's plane, the Spirit of Columbus, was so weighed down with extra fuel tanks and radio gear that she just just didn't have the weight allowance for a suitcase, so she washed that same synthetic blouse in her room, hung it on a shower rod, and put it on the next dawn. Wow. That's a pretty brilliant logistical tool. It worked perfectly for a solo aviator.
But as an everyday consumer product, people actually had complaints about those early synthetics. They didn't breathe well, they held onto odors, they were kind of stiff. Consumers really really missed wearing natural cotton. But I mean, I'm guessing they didn't want to go back to boiling and ironing it every week. No.
And that's, that's where the US Department of Agriculture gets involved. The USDA? Why are they working on laundry? Because they needed to save the American cotton industry from the synthetic boom. According to the Independent's 2013 obituary for a chemist named Dr.
Ruth Benerito, she led a USDA team that figured out how to make natural cotton behave like Dacron. How do you do that? It's a plant. They treated it chemically. Benerito patented a process in 1969 to cross-link the cotton fibers.
It's—uh, it essentially bonds the cellulose molecules together at a structural level. It gives the fabric a memory, so the fibers snap back into their original shape after getting wet. You're kidding. I'm not. It's sort of chemically memory-foam cotton.
And this cross-linking process gives us a brand new marketing term. It wasn't drip-dry or wash-and-wear anymore. This was permanent press. Huh. Permanent press.
I've seen that on washing machines. That's where the phrase ends up living. By about 1965, um, appliance makers like Maytag and Whirlpool realize this treated fabric comes with a physical catch. Which is what? Heat sets the wrinkles.
If you take permanent press cotton out of a hot dryer and leave it sitting in a laundry basket, the cross-linked fibers learn that new crumpled shape and lock it in. Ah, so you've ironed the wrinkles into the clothes by accident. Right. So the appliance manufacturers codified the fix right onto the machine's dial. They added a dedicated permanent press cycle to household washing machines and dryers.
Grace, how does that cycle actually work? I always just assumed it was medium heat. The wash heat is standard, but the dryer cycle introduces a dedicated cool-down phase at the end. It tumbles the clothes while blowing room-temperature air through the drum. That cools the fibers down while they're still in motion, so they don't lock into creases when the drum finally stops.
Okay, that makes sense. So the chemical innovation forced the hardware to change. Yeah, the appliance dial is basically a timeline of fabric chemistry. The drip-dry era was short, but it forced natural fibers to adapt, and then the appliances had to adapt to those natural fibers. It really did save us from the ironing board.
Though I guess you have to wonder if the whole push for synthetic permanent press clothes saved us domestic labor only to trap us in a cycle of microplastics and disposable fashion. We traded the starch for the plastic. Thanks a lot for listening to Daybrain.
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