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Adding more metal during the metallization process increases barrier properties.

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in Food Packaging Technology by (63.0k points)
Adding more metal during the metallization process increases barrier properties.

(a) True

(b) False

This question was addressed to me in unit test.

My question is based upon Blending and Vapor Deposition in Thermoplastics topic in chapter Thermoplastic Polymers Properties & Processing of Food Packaging Technology

1 Answer

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Right choice is (a) True

For explanation: The given statement is true. Metallization process has a strong and complex effect on the development of adhesive and barrier properties of metallized films. Thicker films leads to adhesion problems and even flaking, if the metallized layer becomes too thick. The thinner coatings tend to be full of pinholes and may even be transmitted lights to some degree.

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