发明名称 |
Method of making continuous filament reinforced structural plastic profiles using pultrusion/coextrusion |
摘要 |
A system and method are disclosed for producing a continuous filament reinforced thermoplastic profile having consistent cross section. A continuous reinforcing filament is pre-wetted with a first thermoplastic resin and introduced into a die, where it is contacted with a second thermoplastic resin extruded from an extruder at melt state. The temperature of the die is carefully controlled so that the pre-wetted filament and first resin do not cure or solidify until after they have contacted and mixed with the second thermoplastic resin. The mixture temperature is then controlled to make a substantially solidified profile pre-shape. A capping layer comprising a third thermoplastic resin is then co-extruded onto the outer surface of the pre-shape. A multistage die for bringing together the filament and thermoplastic resins and for maintaining appropriate temperatures at each stage of the profile-forming process is also disclosed.
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申请公布号 |
US2007126142(A1) |
申请公布日期 |
2007.06.07 |
申请号 |
US20050291330 |
申请日期 |
2005.12.01 |
申请人 |
ZHOU XIXIAN;JACOBS GREGORY F;WATERS ERIC S |
发明人 |
ZHOU XIXIAN;JACOBS GREGORY F.;WATERS ERIC S. |
分类号 |
B32B3/26;B32B1/00 |
主分类号 |
B32B3/26 |
代理机构 |
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地址 |
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