WATER LEAKAGE SELF-REPAIR TYPE WATER IMPERMEABLE FILM

Title:

WATER LEAKAGE SELF-REPAIR TYPE WATER IMPERMEABLE FILM

Document Type and Number:

Japanese Patent JPH1043707

Kind Code:

A

Abstract:

To provide a water leakage self-repair type water impermeable film which allows the detection of a range of the occurrence of a small failure, is small in thickness and light in weight, is easy to handle on site, allows easy management after laying and has a self-repair ability.

A first layer non-woven fabric 1 and a second layer nonwoven fabric 2 of the meshes smaller than the meshes of this first layer non-woven fabric 1 are housed within two sheets of the water impermeable films 3 dispose above and below. A soln. dispersed with particles of the grain size slightly larger than the grain sizes of the meshes of the second layer non-woven fabric 2 is injected to the first layer non-woven fabric 1 and this soln. induces clogging in the second layer non-woven fabric 2.

Inventors:

YOSHIKUNI HIROSHI
WATARI YOSHIHARU
KATO BUNSHI

Application Number:

JP20498996A

Publication Date:

February 17, 1998

Filing Date:

August 02, 1996

Export Citation:

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Assignee:

KEISOKU RES CONSULTANT KK
MIZUNO KOGAKU KENKYUSHO KK

International Classes:

B09B1/00; E02B3/12; (IPC1-7): B09B1/00; E02B3/12

Attorney, Agent or Firm:

Yasuo Ishikawa

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