DEVICE FOR FORMING COATING FILM ON INNER SURFACE OF CONTAINER AND METHOD FOR PRODUCING CONTAINER HAVING COATED INNER SURFACE

摘要

A device for forming a coating film on the inner surface of a container comprising a plurality of film-forming chambers (21) communicating with a rotary vacuum sealing mechanism (1) through an exhaust pipe (11) to form a coating film on the inner surface of a plastic bottle B. The exhaust pipe is made of a conductive material and arranged, at a desired position in the pipe, with a honeycomb conductor (39), i.e. a breathing and conductive electric field shielding member. The film-forming chamber comprises an external electrode (27) having a cavity large enough to surround a container when it is inserted, a conductive chamber header member (32) fixed to the end face of the external electrode on the side where the mouth of the container is located through an insulating member (31) and being connected with the exhaust pipe and earthed, a member (34) being inserted into the container in the external electrode (27) from the chamber header member side and blowing coating film forming gas, and a high frequency power supply (35) as an electric field imparting means for imparting an electric field between the external electrode and the earthed chamber header member and exhaust pipe.