发明名称 |
A climate control duct and method of making it |
摘要 |
A process for producing a blow-molded foam is described. The blow-molded foam includes foamed cells, an average cell diameter of the foamed cells in a thickness direction of a wall defining the blow-molded foam being less than 300 µm, a standard deviation of a cell diameter of the foamed cell in the thickness direction of the wall being less than 40 µm. The process comprise kneading a polyolefin-based resin containing a foaming agent mixed therewith in an extruder (35), and then retaining the polyolefin-based resin at a cylinder-shaped space (9) defined between a mandrel (7) and a die outer cylinder (8), and extruding a parison (12) between split mold blocks (13) from a die slit (11) at an extrusion rate of 700 kg/h or more by use of a ring-shaped piston (10) after a predetermined amount of the resin is retained at the cylinder-shaped space (9) and carrying out blow molding after clamping by blowing air into the parison. |
申请公布号 |
EP2261004(B1) |
申请公布日期 |
2014.12.17 |
申请号 |
EP20090728880 |
申请日期 |
2009.03.31 |
申请人 |
KYORAKU CO., LTD |
发明人 |
ONODERA, MASAAKI;SUMI, TAKEHIKO;TAMADA, TERUO;IGARASHI, YU;OHNO, YOSHINORI |
分类号 |
B29C49/04;B29C44/34;B29C49/00;B29C49/48;B29K23/00;B29K105/04;B29L23/00;B29L31/30;B60H1/00 |
主分类号 |
B29C49/04 |
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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