| 摘要 |
PROBLEM TO BE SOLVED: To provide a marked hose free from the removing of marking, and dispensing with the maintenance such as refilling the ink. SOLUTION: In this hose made out of a synthetic resin and marked at proper intervals in the longitudinal direction of a hose main body made out of a soft synthetic resin, the marking is performed by laser, a surface of the hose is heat-processed by the focused laser beam, and the marking is performed by stripping off or carving the surface of the hose, whereby the separation and removing of the marking can not be found. Further as the refilling of ink and the like is unnecessary, the management of the manufacturing equipment can be simplified. COPYRIGHT: (C)2005,JPO&NCIPI
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