Plastic bottle. History of invention and production

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HISTORY OF TECHNOLOGY, TECHNOLOGY, OBJECTS AROUND US
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Plastic bottle. History of invention and production

The history of technology, technology, objects around us

Directory / The history of technology, technology, objects around us

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Nathaniel Wyeth was born to the famous artist and illustrator Newell Converse Wyeth. His brother Andrew and both sisters followed in his father's footsteps, but little Nat already at the age of three showed a clear interest in mechanisms (for example, the springs and brakes of his stroller).

After graduating from the University of Pennsylvania, Nat worked for Delco, but after a while he moved to the chemical concern DuPont, where his inventive talent really showed up: from improvements such as non-clogging valves and magnetic rollers for the production of Typar polypropylene nonwoven fabric to a fully automatic machine for production of sticks of dynamite. But Nathaniel began work on his most famous invention in 1967.

In one of the conversations with colleagues, he suggested making bottles for carbonated drinks out of plastic. The interlocutors expressed the opinion that plastic would not withstand the pressure of carbon dioxide. In the evening, Nate bought a plastic bottle of detergent, at home he poured the contents into the sink, poured ginger ale inside and put it in the refrigerator. The next morning, the bottle was inflated and it was sandwiched between the shelves.

Wyeth began to experiment with different types of polymers. He knew that nylon could be strengthened by orienting its molecules, but in this case, it was necessary to increase the strength of the material in two directions! The solution was a bottle mould, striated with cross cuts, so that the polymer molecules lined up during pressing.

The final touch was the replacement of polypropylene with more flexible polyethylene terephthalate (PET). Bottles made of polyethylene terephthalate were transparent, light, strong, elastic and completely safe.

Another important advantage of polyethylene terephthalate is that it is excellent for recycling.

Although in 1973, when Nathaniel Wyeth patented the process, recycling was not a priority, as early as 1977 bottles began to be reused. And today, this polymer is a major component of recycling - this is how almost half of all polyester fibers are produced in the United States.

Plastic bottles

Plastic bottles are of great use in the household. In third world countries, where ordinary European dishes and containers are rare, plastic containers are in significant demand; in Ethiopia, used bottles are sold directly in the markets.

In African countries, sandals are made from flattened one and a half liter bottles. Bottles are used to make birdhouses, mousetraps, funnels and seedling pots, they are used to protect young rice sprouts, they are hung on the fence as a scarecrow from crows, and they are also used as waterproof caps on the tops of poles. In Indonesia, stabilizers to stabilize fishing boats.

Author: S.Apresov

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