**Masaki Nakaya 1,\*, Akira Uedono <sup>2</sup> and Atsushi Hotta <sup>3</sup>**


Academic Editor: Alessandro Lavacchi Received: 20 September 2015; Accepted: 20 November 2015; Published: 8 December 2015

**Abstract:** This article presents a short history and the recent advancement of the development of chemical vapor deposition technologies to form thin film gas barrier coatings on PET bottles and other plastic containers in food and beverage containers. Among different gas barrier enhancement technologies, coating can show unique performance where relatively high gas barrier enhancement is possible to various gas permeants. In this article, technologically common and different points of the current thin film coating methods in this field are summarized. This article also refers to recent market situations and technological challenges in the Japanese market.

**Keywords:** gas barrier; coating; thin film; PET bottle; DLC; SiO*x*; SiOC
