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    • 71. 发明授权
    • Pipe liner and a method for manufacturing same
    • 管道衬管及其制造方法
    • US5242517A
    • 1993-09-07
    • US720065
    • 1991-06-24
    • Shigeru Endoh
    • Shigeru Endoh
    • B29C63/34B29C53/48B29C63/00B29C63/28B29C65/02B29C65/48B29C65/56B29C65/62B29L23/00F16L55/165
    • B29C53/48B29C63/0047B29C63/28B29C65/56B29C65/62B29C66/4322B29C66/49B29C66/723F16L55/1656B29C65/02B29C65/48B29C66/71B29L2023/006
    • A method of manufacturing a pipe liner with which a pipe is internally lined,forming a tubular body from a lengthy rectangular belt of a resin-absorbable flexible material by sewing the longer sides of the rectangle together; andcoating either the inner or outer surface of the tubular body with an airtight plastic film, for example, by:(a) inserting the tubular resin-absorbable flexible material into the airtight plastic film tube;(b) wrapping the two-layer tube with a tubular film of release means;(c) inserting an inflatable bag into the multi-layer tube;(d) pneumatically inflating the inflatable bag to thereby radially press the multi-layer tube from inside to thereby cause the multi-layer tube to become cylindrical;(e) causing the airtight plastic film to adhere closely to the resin-absorbable flexible material by removing the air trapped between the resin-absorbable flexible material and the airtight plastic film tube by drawing the air from the resin-absorbable flexible material by means of a suction means; and(f) heating and fusing the airtight plastic film by means of a shiftable electric heater to thereby coat the resin-absorbable flexible material with the airtight plastic film.
    • 一种制造管内衬的方法,通过将矩形的长边缝合在一起,由可吸收树脂的柔性材料的长方形带形成管状体; 并用气密塑料膜涂覆管体的内表面或外表面,例如:(a)将管状可吸收树脂的柔性材料插入气密塑料薄膜管中; (b)用释放装置的管状膜包裹双层管; (c)将充气袋插入多层管中; (d)使充气袋气动膨胀,从而从内部径向挤压多层管,从而使多层管成为圆柱形; (e)通过从可吸收树脂的柔性材料中吸出空气,通过从可吸收树脂的柔性材料中吸出空气,通过除去可吸收树脂的柔性材料和气密塑料薄膜管之间的空气,使气密的塑料薄膜紧密地附着在可吸收树脂的柔性材料上 抽吸装置 和(f)通过可移动电加热器对气密塑料薄膜进行加热和熔融,由此用气密塑料薄膜涂覆可树脂吸收的柔性材料。