| 摘要 |
PROBLEM TO BE SOLVED: To provide a hose provided with markedly excellent flexibility, capable of preventing it from having a permanent set even when cold-heat cycle is applied, and being favorable, for example, as a pipe for city water and a pipe for water and hot water supply. SOLUTION: This hose 1 is produced by molding a compound containing polyethylene and ethylene copolymer into a tube, and calorie of crystal melting of the compound is 30 J/g or less. In this compound, content of comonomer component that ethylene copolymer contains is 15% weight or more of total amount of polyethylene and ethylene copolymer. In the hose produced by moldng a compound containing polyethylene and ethylene-propylene-diencopolymer into a tube, ethylene-propylene-diencopolymer is polymerized under single site catalyst. A pressure proof reinforcing layer 2 is formed at the outer periphery. COPYRIGHT: (C)2006,JPO&NCIPI
|
