UNDERGROUND PIPE STRUCTURE

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专利权人:

TAKIRON CO LTD

发明人:

NAKAO TOSHITAKA,KUBOTA TAKEJI

申请号：

JP20040274468

公开号：

JP2006090374(A)

申请日:

2004.09.22

申请国别(地区):

日本

年份:

2006

代理人:

摘要：

PROBLEM TO BE SOLVED: To provide an underground pipe structure preventing damage and breakage due to growth of plant root from new installation to a time after long period time passes. SOLUTION: A sheet body 3 having a base material 1 ejecting ion or composition which the plant root 4 evades is equally added on a surface thereof is fixed and integrated on whole circumference of an inner wall 50 of the underground pipe. COPYRIGHT: (C)2006,JPO&NCIPI

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/