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Patent Searching and Data


Title:
WATER-STOPPING MATERIAL FOR LOOSE CLEARANCE
Document Type and Number:
Japanese Patent JPH07102527
Kind Code:
A
Abstract:

PURPOSE: To reduce the degree of water absorption for a foam material and to obtain therewith a water-stopping material for loose clearance that is excellent in water-stopping capacity by a method wherein the outer layer of the end on the upper side of the foam material having continuous bubbles is impregnated with water-repellent.

CONSTITUTION: The outer layer 3 of the end on the upper side 2 of a foam material having continuous bubbles 1 is impregnated with water-repellent. As occasion demands, the sides 7 are impregnated with the water-repellent. In other words, the material is made to be impermeable to water by presence of the water-repellent. On the other hand, the bubbles 1 on the end of the underside 4 are made to communicate with the outside air. In other words, the outside air can be taken easily into the foam material 1 through the end on the underside 4. Even though water gathers over a water-stopping material, a great amount of air can be taken into the foam material through the end on the underside 4. Thereby, the degree of water absorption by the foam material can be reduced, improving water-stopping capacity.


Inventors:
YAMAUCHI HIROSHI
KASHIWABARA MASAHIKO
Application Number:
JP24669093A
Publication Date:
April 18, 1995
Filing Date:
October 01, 1993
Export Citation:
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Assignee:
ASAHI KAKO KK
NITTA KK
International Classes:
E01C11/02; E01D2/00; E01D19/08; E04B1/684; E01D101/40; (IPC1-7): E01D19/08; E01C11/02; E04B1/684
Attorney, Agent or Firm:
Kazuyoshi Tsujimoto