发明名称 |
METHOD OF INJECTION MOLDING USING RIBS AND APPARATUS THEREFOR |
摘要 |
A method of injection molding parts, including: injecting a first thermoplastic polymer into a first cavity; forming a ribbed structure comprising ribs in the first cavity, wherein each rib in the ribbed structure includes a microstructure on an outer portion of a rib; and reducing the surface imperfections in the part by overmolding a layer formed in the second cavity onto a portion of a rib by injecting a second thermoplastic polymer into the second cavity, wherein the overmolding occurs at an interface between the layer and the ribbed structure; or injecting a first thermoplastic polymer into a first cavity; forming a layer in the first cavity; and overmolding a ribbed structure comprising ribs formed in the second cavity onto a portion of the layer formed in the first cavity. In further variations gas is injected into a microchannel formed at the interface or a foaming agent is applied in the first thermoplastic polymer. |
申请公布号 |
WO2017051375(A1) |
申请公布日期 |
2017.03.30 |
申请号 |
WO2016IB55708 |
申请日期 |
2016.09.23 |
申请人 |
SABIC GLOBAL TECHNOLOGIES B.V. |
发明人 |
NEERINCX, Peter;HEERKENS, Ruud |
分类号 |
B29C45/16;B29C44/06;B29C44/08;B29C45/17 |
主分类号 |
B29C45/16 |
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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