Title:
WATER SEALING SHEET FOR CIVIL ENGINEERING
Document Type and Number:
Japanese Patent JP3286862
Kind Code:
B2
Abstract:
PURPOSE: To provide a water stop sheet having excellent weather resistance, chemical resistance, heat resistance, cold resistance, breaking load, sealing property, softness, durability, and workability at the time of execution.
CONSTITUTION: A multilayer sheet has a three-layer structure consisting of an intermediate layer and two outer layers. The intermediate layer is made of a composition (A) in which 90wt.% or below of polyethylene (1) having a density of 0.940-0.965g/cm3 and 10wt.% or above of thermoplastic resin (2) having a torsional modulus of rigidity (JIS K6730) of 400kgf/CM2 or below are mixed. Each of the outer layers is made of a composition (B) in which 10-30wt.% of polyethylene (3) having a density of 0.940-0.965g/cm3 and 70-90wt.% of thermoplastic resin (4) having a torsional modulus of rigidity (JIS K6730) of 400kgf/cm2 or below are mixed, and has a sheet breaking load of 30kgf/cm or above.
Inventors:
Hisao Yamazaki
Matsuro Sawayama
Matsuro Sawayama
Application Number:
JP15870193A
Publication Date:
May 27, 2002
Filing Date:
June 29, 1993
Export Citation:
Assignee:
Tosoh Corporation
International Classes:
B29C47/06; B32B27/08; B32B27/32; E02B3/12; E02D19/08; E02D31/00; B29L9/00; (IPC1-7): B32B27/32; E02B3/12; E02D31/00
Domestic Patent References:
| JP358839A |
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