JPS6176828U - - Google Patents

Info

Publication number
JPS6176828U
JPS6176828U JP15889384U JP15889384U JPS6176828U JP S6176828 U JPS6176828 U JP S6176828U JP 15889384 U JP15889384 U JP 15889384U JP 15889384 U JP15889384 U JP 15889384U JP S6176828 U JPS6176828 U JP S6176828U
Authority
JP
Japan
Prior art keywords
underdrain
hard sheets
crimping
laminating
synthetic resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15889384U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP15889384U priority Critical patent/JPS6176828U/ja
Publication of JPS6176828U publication Critical patent/JPS6176828U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Sewage (AREA)

Description

【図面の簡単な説明】
第1図はこの考案の一実施例を示す斜視図、第
2図は同上使用状態を示す断面図である。 A…成層テープの截断片、1,2…硬質シート

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 互いに熱収縮率を異にする二層の硬質シー
    トを成層して形成された成層テープ若しくはその
    截断片を加熱してロツク状に捲縮せしめてなる暗
    渠排水管の被覆材。 (2) 硬質シートの少なくとも一方が合成樹脂発
    泡シートである実用新案登録請求の範囲第1項記
    載の暗渠排水管の被覆材。
JP15889384U 1984-10-19 1984-10-19 Pending JPS6176828U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15889384U JPS6176828U (ja) 1984-10-19 1984-10-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15889384U JPS6176828U (ja) 1984-10-19 1984-10-19

Publications (1)

Publication Number Publication Date
JPS6176828U true JPS6176828U (ja) 1986-05-23

Family

ID=30716860

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15889384U Pending JPS6176828U (ja) 1984-10-19 1984-10-19

Country Status (1)

Country Link
JP (1) JPS6176828U (ja)

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