Diapers have been worn throughout human history, and made of cloth or disposable materials. Whereas cloth diapers are comprised of layers of fabric such as terry towelling and can be washed and reused multiple times, disposable diapers contain absorbent chemicals and are thrown away after use. The decision to use cloth or disposable diapers is a controversial one, owing to issues ranging from convenience, health, cost, and their effect on the environment. Currently, disposable diapers are the most commonly used, with Pampers and Huggies being the most well-known brands in the industry. Plastic pants can be worn over diapers to avoid leaks.

Diapers are primarily worn by children who are not yet potty trained or suffer from bedwetting. However, they can also be used by adults who suffer from incontinence or in certain circumstances where access to a toilet is unavailable. These can include the elderly, those with a physical or mental disability, and people working in extreme conditions such as astronauts. Diapers are usually worn out of necessity rather than choice, although there are exceptions; people such as infantilists and diaper fetishists wear diapers recreationally for comfort, emotional fulfillment, or sexual gratification. Terms such as "incontinence pads" can be used to refer to adult diapers.

Etymology

The word diaper originally referred to the type of cloth rather than its use ; "diaper" was the term for a pattern of small repeated geometric shapes, and later came to describe a white cotton or linen fabric with this pattern. The first cloth diapers consisted of a special type of soft tissue sheet, cut into geometric shapes. This type of pattern was called diapering and eventually gave its name to the cloth used to make diapers and then to the diaper itself. This usage stuck in the United States and Canada, but in Britain the word "nappy" took its place. Most sources believe nappy is a diminutive form of the word napkin.

Development

In the 19th century, the modern diaper began to take shape and children in Europe and North America were being diapered using cotton material, held in place with a safety pin. Cloth diapers were first mass produced in 1887 by Maria Allen in the United States.

In the 20th century, the disposable diaper gradually evolved through the inventions of several different people. In 1942, a Swedish paper company known as Pauliström created the first disposable diaper using sheets of tissue placed inside rubber pants. Four years later, an American housewife in Westport, Connecticut, Marion Donovan, developed a waterproof diaper cover known as the "Boater" using a sheet of plastic from a shower curtain; she was granted four patents for her invention, including the use of plastic snaps as opposed to safety pins. In 1947, a man named George M. Schroder invented the first diaper with disposable nonwoven fabric. Disposable diapers were introduced to the US in 1949 by Johnson & Johnson. During the 1950s, companies such as Kendall, Parke-Davis, Playtex, and Molnlycke entered the disposable diaper market. In 1956, Procter & Gamble began researching disposable diapers. Vic Mills, along with his project group including William Dehaas, both men who worked for the company, invented what would be trademarked "Pampers". Presented to Fred Wells as project p-57 (this was the plane Wells had taught American pilots to fly during WWII), Mills stated, "This one will fly." Although Pampers were conceptualized in 1959, the diapers themselves were not launched into the market until 1961. Over the next few decades, the disposable diaper industry boomed and the competition between Procter & Gamble's Pampers and Kimberly Clark's Huggies resulted in lower prices and drastic changes to diaper design. Several improvements were made, such as the introduction of refastenable tapes, the "hourglass shape" so as to reduce bulk at the crotch area, and the invention of super-absorbent material from polymers known as sodium polyacrylate.