| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lining material in which strength is enhanced by using a glass fiber fabric as the lining material and uniform strength is achieved by preventing the displacement of glass fibers constituting the fabric. <P>SOLUTION: The lining material to be installed in a conduit includes a laminated member 2 in which a nonwoven fabric 4 of organic fiber and a glass roving cloth 5 are laminated. The nonwoven fabric 4 is put over each surface of the glass roving cloth 5, and the nonwoven fabric 4 and the glass roving cloth 5 are joined together by a needle punch with the glass roving cloth 5 being held between two layers of the nonwoven fabric 4. <P>COPYRIGHT: (C)2012,JPO&INPIT |
