Lunch box

The lunch box, also referred to as a lunch pail or lunch kit, is used to store food to be taken anywhere. The concept of a food container has existed for a long time, but it was not until people began using tobacco tins to carry meals in the early 20th century, followed by the use of lithographed images on metal, that the containers became a staple of youth, and a marketable product.

The lunch box has most often been used by schoolchildren to take packed lunches, or a snack, from home to school. The most common modern form is a small case with a clasp and handle, often printed with a colorful image that can either be generic or based on children's television shows or films. Use of lithographed metal to produce lunch boxes in the 1950s, 1960s, 1970s and 1980s gave way in the 1990s to use of injection-molded plastic.

A lunch kit comprises the actual "box" and a matching vacuum bottle. However, pop culture has more often embraced the singular term lunch box, which is now most commonly used.

With increasing industrialization resulting in Americans working outside the home in factories, it became unfeasible to go home to lunch every day, thus it was necessary to have something to protect and transport a meal. Since the 19th century, American industrial workers have used sturdy containers to hold hardy lunches, consisting of foods such as hard-boiled eggs, vegetables, meat, coffee, and pie. David Shayt, curator of the Smithsonian National Museum of American History, states that “Some of our earliest examples, from the 19th century, were woven baskets with handles. A meal would be wrapped in a handkerchief. Depending on your station, a fancy wooden box would be used by the wealthy.”Tinplate boxes and recycled biscuit tins commonly were used in the early 1800s, and fitted metal pails and boxes began to appear around the 1850s. Patents started to appear for lunchbox inventions in the 1860s.

The Thermos, a vacuum flask adapted for lunch box use, was introduced in 1904. The Thermos, which enabled hot or cold beverages to remain at optimal temperature until lunchtime, became a common component of the lunch box.

Lunch boxes have been manufactured using various materials. Typically, children's school lunch boxes are made of plastic or vinyl, while adult workers' lunch boxes are commonly made of metal, such as tin or aluminium, due to the greater need for durability. The aluminium variant was invented in 1954 by Leo May, a miner in Sudbury, Ontario, after he accidentally crushed his tin lunch box.

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