Patent ID: 6854309

Claim:
A machine which makes a gas barrier synthetic resin container by forming a diamond-like carbon film on an outer wall of a wide mouth synthetic resin container which has an opening portion, a body portion followed by the opening portion, and a bottom portion for closing the end of the body portion, the minimum inside diameter of the opening portion being larger than the maximum inside diameter of the body portion, and the machine comprising: a base which supports the opening portion; an inner electrode extending from the base into the container through the opening portion; an outer electrode which keeps the ambient space around the container supported on the base airtight; a vacuum pump which evacuates air from the ambient space around the container; a gas supply device which supplies a gas including carbon atoms into the ambient space around the container; a plasma excitation portion which generates plasma in the ambient space around the container by using the inner and outer electrodes; and a ring-shaped gas inlet which introduces the gas from the gas supply device into the ambient space around the container, the gas inlet extending around the opening portion.