SEDIMENT INFLOW PREVENTIVE MEMBER OF POROUS PIPE FOR UNDERDRAINAGE AND SEDIMENT INFLOW PREVENTION

PURPOSE:To efficiently and permanently prevent sediment inflow to a porous pipe for under drainage by easy and safe working. CONSTITUTION:A sediment inflow preventive member 1 is manufactured by aggregating polypropylene fibers continuously curled and Thereafter, a sediment inflow protective layer i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HIRATE TOMOYUKI, GONDA YASUYUKI
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:PURPOSE:To efficiently and permanently prevent sediment inflow to a porous pipe for under drainage by easy and safe working. CONSTITUTION:A sediment inflow preventive member 1 is manufactured by aggregating polypropylene fibers continuously curled and Thereafter, a sediment inflow protective layer is made by winding the provided sediment inflow protective member 1 around a porous pipe, and sediment inflow preventive treatment is applied to the porous pipe 3 by winding a nonwoven fabric 4 around it.