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UNDERGROUND PIPE STRUCTURE
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/

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