发明名称 |
Apparatus for injection molding multilayered articles |
摘要 |
An apparatus for injection molding two compatible polymeric materials, in which two or more plasticizing zones on a screw are used to simultaneously or sequentially plasticize the two materials into a common accumulation space through separate pathways. The charge comprising multiple layers of material is then injected into a closed mold by means of forward axial motion of the screw with respect to its enclosing barrel. Once inside the mold, the first material forms a skin layer, totally or partially surrounding the other material. In this way a part having a plurality of material properties may be produced in a single operation.
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申请公布号 |
US7004739(B2) |
申请公布日期 |
2006.02.28 |
申请号 |
US20020271615 |
申请日期 |
2002.10.16 |
申请人 |
COMMUNITY ENTERPRISES, LLC |
发明人 |
THOMSON JOEL |
分类号 |
B29C45/50;B29C45/16;B29C45/52;B29C45/60;B29C45/74 |
主分类号 |
B29C45/50 |
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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