| 摘要 |
PURPOSE: A fluid guide pipe for liquid and gas is provided to be formed conveniently and to prevent the environmental pollution according to the possibility of reuse for a fluid guide pipe by melting after disposal. CONSTITUTION: The pipe is formed by:a first thermoplastic material containing thermoplastic polyester elastomer; a second thermoplastic material having better bending strength and flexibility than the first thermoplastic material and containing polybutylene naphthalate having low tensile strength and impact strength. The first thermoplastic material contains thermoplastic elastomer of polybutylene terephthalic blocks, soft polyester glycol blocks and polybutylene naphthalate base. The thickness of the second layer is made up of 10-70 % of whole wall thickness. |
