| 摘要 |
PROBLEM TO BE SOLVED: To execute inner surface coating uniformly through simple evaporation or sputtering not in an form venturing to take the reaction of gases into consid eration particularly, and enhance the barrier properties of a bottle by coating the inner surface of a bottle with SiOx in respect of its thickness or barrier properties. SOLUTION: The inner surface-coated bottle 10 is formed by creating SiOx 13 on a plastics bottle. In this instance, the plastics bottle is not specified by material; e.g. a polymeric film such as polyester can be used. However, the value of SiOx is set in the range of 1.0-2.0 in order to be readily sublimated by evaporation, and also easily specified regarding filmed matter. Also, with respect to its barrier properties, it is preferable to be on the order of 1.6-1.8. By this method, oxygen barrier properties can be improved several times, and unevenness of the thickness and ununiformity can be reduced respectively, thus enhancing barrier properties in the whole part of the bottle.
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