发明名称 |
Multiple foam energy absorbing substrate assembly |
摘要 |
The present invention relates to a multiple foam substrate of predetermined shape and a method of manufacturing the substrate. The substrate is a multiple foam substrate which may be manufactured by the method with a mold having first and second mold cavities. The method includes injecting a first foam into the first mold cavity sufficiently to fill the first mold cavity and storing the first foam in the first mold cavity for a predetermined time sufficient to form a substantially non-mixing surface on the first foam. The method further includes injecting a second foam into the second mold cavity and onto the non-mixing surface on the first foam sufficiently to fill the second mold cavity. The method further includes storing the second foam in the second mold cavity for a predetermined time sufficient to bond the first foam to the second foam along the non-mixing surface.
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申请公布号 |
US6773795(B2) |
申请公布日期 |
2004.08.10 |
申请号 |
US20020245194 |
申请日期 |
2002.09.17 |
申请人 |
LEAR CORPORATION |
发明人 |
BYMA GEORGE B.;CRISTEA BRIAN A.;MUEHLBACHER RICHARD |
分类号 |
B29C44/08;B29C45/04;B29C45/16;B60R21/04;B60R21/20;B60R21/213;(IPC1-7):B32B3/06;B29C44/06 |
主分类号 |
B29C44/08 |
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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