发明名称 |
Sealing material |
摘要 |
The present invention provides a sealing material having excellent water resistance for a long time. A sealing material A of the present invention comprises: a rubber resin sheet 1; and a thermoplastic resin foam layer 2 formed at least on one surface of the rubber resin sheet 1. The sealing material A has a 25% compressive strength in a thickness direction of 2 to 40 kPa as measured in accordance with JIS K6767 and the thermoplastic resin foam layer 2 has a closed cell ratio of 10 to 60%. As a result, the sealing material A has excellent water resistance right after the use thereof and even after a long time has elapsed, and is suitably used in various applications. |
申请公布号 |
US8962122(B2) |
申请公布日期 |
2015.02.24 |
申请号 |
US200812733307 |
申请日期 |
2008.08.22 |
申请人 |
Sekisui Chemical Co., Ltd. |
发明人 |
Adachi Kouichi;Hyoudou Shunji;Konishi Yasuhiro |
分类号 |
B32B3/26;E04B1/68;B32B5/18;B32B7/02;B32B25/08;C09K3/10;E04B1/66;F16J15/10 |
主分类号 |
B32B3/26 |
代理机构 |
Wenderoth, Lind & Ponack, L.L.P. |
代理人 |
Wenderoth, Lind & Ponack, L.L.P. |
主权项 |
1. A sealing material comprising:
a rubber resin sheet; and a thermoplastic resin foam layer formed at least on one surface of the rubber resin sheet, wherein the sealing material has a 25% compressive strength in a thickness direction of 2 to 40 kPa as measured in accordance with JIS K6767, the thermoplastic resin foam layer has a closed cell ratio of 10 to 60% and at least three hole portions formed thereon, wherein the at least three hole portions comprise an opened edge and have a depth of 25 to 80% of a thickness of the thermoplastic resin foam layer, and the at least three hole portions are disposed so that a center of the opened edge of each hole portion is equally spaced from that of the center of the opened edge of an adjacent hole portion at a distance of 0.5 to 5 mm, and the rubber resin sheet does not have a hole portion disposed therein. |
地址 |
Osaka JP |