Abstract: The present invention provides method of DLC film coating a plastic container by DLC film coating the container in an apparatus, where the apparatus comprises a container side electrode which forms one portion of a pressure-reducing chamber and a facing electrode, where the container side electrode is formed so that the average inner hole diameter (R2) of the inner wall surrounding a neck portion is smaller than the average inner hole diameter (R1) of the inner wall surrounding the body portion, and the average distance (d2) between the outer wall of the container and the inner wall of the container side electrode in a horizontal cross section with respect to the vertical direction of the container at the neck portion becomes longer than the average distance (d1) between the outer wall of the container and the inner wall of the container side electrode.

Abstract: The present invention provides a plastic container having a inner wall surface coated with DLC film which has same level of oxygen barrier property as prior art and can prevent a coloring of the DLC film formed on a neck portion of the container, manufacturing apparatus therefor and manufacturing method thereof.

Abstract: The present invention provides a plastic container or bottle having an inner wall surface coated with a DLC film which has the same level of oxygen barrier property as prior art DLC coated containers while at the same time preventing the coloration of the neck portion found in the containers of the prior art. The DLC film formed on the neck portion of the inventive bottle has a lower graphite mixing proportion than the DLC film formed on body portion, and the oxygen permeability of the container is less than or equal to 0.0050 ml/container (500 ml PET container)/day. The apparatus and the method of producing such a bottle are also described.

Abstract: It is an object of the present invention to generate stable plasma and carry out continuous discharge while at the same time preventing the adherence of dust to a mouth side electrode by arranging the mouth side electrode outside the container to face a container side electrode.

Abstract: The present invention provides a plastic container having a inner wall surface coated with DLC film which has same level of oxygen barrier property as prior art and can prevent a coloring of the DLC film formed on a neck portion of the container, manufacturing apparatus therefor and manufacturign method thereof.