| 摘要 |
<p>PURPOSE:To improve chlorine water resistance and adhesion endurance by making a high density polyethylene resin to the inner layer, silane graft denaturation low density polyethylene resin to the intermediate layer, and metal to the outer layer. CONSTITUTION:An aluminum pipe is made in the outer layer, the intermediate layer composed of silan graft denaturation linear low density polyethylene is extrusively coated on the inner surface of the outer layer, and moreover the inner layer composed of a high density polyethylene resin is extrusively coated concurrently with the intermediate layer on the inner surface of the intermediate layer. This enables chlorine water resistance and adhesion endurance to be improved.</p> |
