| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink supply tube which is not only excellent in fire retardancy, but also free from melt deformation even in a high temperature and, moreover, which can intercept permeation of oxygen from outside and prevent deterioration of staying ink for a long time. SOLUTION: An ink supply tube 1 has a multilayer structure. An inner layer 2 with which ink comes into contact is constituted of polyolefin of which the elasticity modulus in bending is 8000kg/cm<2> or below. An outer layer 3 is fire- retardant resin which contains a fire retardant of 5-40wt.% and of which the oxygen permeation coefficient is 1×10<-11> cc.cm/cm<2> .sec.cmHg (37 deg.C, R. H. 0%) or below. |
