| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pressure-proof hose for a drink supplying device, which does not transmit smell and taste of a constitute material, and oxygen, has high flexibility, and restrains deterioration of a physical property, even if the hose is exposed to the outdoors for a long time. SOLUTION: Polyethylene used for an innermost layer 1, and high density polyethylene used for an outermost layer 5 themselves do not have any taste or smell. Also, they have high barrier property against smell and taste of olefin base resin used for an inner layer 2 and an outer layer 4, and oxygen. Also, high density polyethylene of the outermost layer 5 is softer than polypropylene.</p> |
