To provide a vessel with a gas indicator which can easily determine, by a simple configuration, the presence or absence of defects such as pin holes, poor sealing, or the like for a plastic vessel.
The vessel 1 provided with a gas indicator under this invention comprises a storage section 3 demarcated by a fusion-bonded portion 2. Two strips of multi-layer film that constitute the vessel 1 respectively comprise a seal layer, for the innermost layer, that is made of a resin allowing carbon dioxide gas to permeate therethrough, and a gas barrier layer preventive of the permeation of carbon dioxide gas being laid at an outer layer side of the seal layer, while in a strip of the multi-layer film, a gas indicator 5 is provided between the seal layer and the gas barrier layer.
INOUE TADAAKI
TANAKA HIROMI
YUYAMA KOHEI
Hiroyuki Okamoto
Mio Kawasaki