发明名称 |
FOAM BOARD OF POLYOLEFIN RESIN, AND METHOD FOR PRODUCTION THEREOF |
摘要 |
<p>Disclosed is a foam board of a polyolefin resin, which has an excellent thermal insulation property and an excellent sound absorption property, whose final product can be material-recycled, which is inexpensive, an which can be produced continuously. Also disclosed is a method for producing a foam board, which comprises conducting the extrusion foaming of a mixture of a polyolefin resin composition and a foaming agent by ejecting the mixture under atmosphere through an extruder equipped with a multi-hole-type die at a melt-extrusion temperature of 160 to 250°C, at an ejection amount (V) of 0.05 to 0.45 kg/hr per one opening in the die, and at a proximal resin pressure of 7 to 20 MPa at the opening of the die, wherein the polyolefin resin composition comprises a linear polypropylene resin having a melt tension of 5 to 30 g at 230°C, the foaming agent comprises at least carbon dioxide in the supercritical state, and the multi-hole-type die has an opening diameter of 0.1 to 1.0 mm and the number of openings of 50 to 5000.</p> |
申请公布号 |
WO2009001934(A1) |
申请公布日期 |
2008.12.31 |
申请号 |
WO2008JP61754 |
申请日期 |
2008.06.27 |
申请人 |
ASAHI FIBER GLASS COMPANY, LIMITED;ITADANI, TORU;ONO, MASAAKI;OZAKI, KENGO |
发明人 |
ITADANI, TORU;ONO, MASAAKI;OZAKI, KENGO |
分类号 |
B29C47/92;B29C47/12;B29K23/00;B29K105/04 |
主分类号 |
B29C47/92 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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