| 摘要 |
PROBLEM TO BE SOLVED: To provide such an anti-seismic slit material that not only separation of a impervious part can be prevented even though a supporting material for supporting a slit material main body is deformed by an earthquake, but also when it is fixed to a molding frame, there is no such hindrance that it adheres to other parts by adhesion of the impervious part, and yet cutting by saw is easy. In addition, it has availability and a swelling performance good enough to cover a gap formed in earthquakes. SOLUTION: Supporting materials which support the slit material main body constituting an anti-seismic slit material is made of poly-chloride polyvinyl resin and at an adequate portion of the supporting materials, a water stop part made of a flexible water swelling poly-chloride polyvinyl is integrally formed using a co-extrusion process.
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