{"id":4202,"date":"2024-09-20T14:01:47","date_gmt":"2024-09-20T05:01:47","guid":{"rendered":"https:\/\/agus.co.jp\/en\/?p=4202"},"modified":"2024-09-20T14:01:49","modified_gmt":"2024-09-20T05:01:49","slug":"the-principle-of-vacuum-deposition-is-explained-using-snack-bags-as-an-example","status":"publish","type":"post","link":"https:\/\/agus.co.jp\/en\/?p=4202","title":{"rendered":"The principle of vacuum deposition is explained using snack bags as an example."},"content":{"rendered":"\n
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We, SUGA manufacture thin-film devices based on the vacuum principle.<\/p>\n\n\n\n

In order to familiarize you with the principles of vacuum, we will talk about a bag of snacks as an example to explain ‘vacuum evaporation’.<\/p>\n\n\n\n

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Vacuum evaporation and snacks.<\/h2>\n\n\n\n

Have you ever looked at the inside of a bag of snacks?<\/p>\n\n\n\n

Most of the time, the inside of the bag has a silver membrane.
This silvery film is a metal film and is made from ‘aluminum’.<\/p>\n\n\n\n

The ‘vacuum evaporation method’ is applied to produce this film.
Snack food bags are made of plastic film, which usually allows water vapor, oxygen, nitrogen, and carbon dioxide to pass through.<\/p>\n\n\n\n

However, if the bag contains potato chips fried in oil, the oil must be prevented from oxidation in order to preserve quality.
This is effectively prevented by the aluminum deposited bags.<\/p>\n\n\n\n

How the aluminum is deposited on the underside of the bag is shown next.<\/p>\n\n\n\n

<\/div>\n\n\n\n

‘Vacuum evaporation’ for depositing aluminum on snack bags.<\/h2>\n\n\n\n

Vacuum evaporation method is used to apply aluminum to the underside of snack bags.<\/p>\n\n\n\n

First, the principles of the vacuum evaporation method are briefly explained.<\/p>\n\n\n\n

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  1. The vacuum vessel is equipped with an evaporation source.<\/li>\n\n\n\n
  2. When an evaporating material is heated, it begins to evaporate. (Imagine steam coming out of a pan)<\/li>\n\n\n\n
  3. The evaporated material adheres to the substrate placed in the container and forms a film.<\/li>\n<\/ol>\n\n\n\n

    The deposition of films using evaporation and vacuum is known as the ‘vacuum evaporation method’.<\/p>\n\n\n\n

    \n Related article.<\/span>\n

    Is the space really a vacuum? This time let us talk about it more clearly.<\/a><\/p>\n<\/div>\n