发明名称 |
Plastic wood fiber foam structure and method of producing same |
摘要 |
A process for producing plastic/wood fiber composite foamed structures includes the steps of pre-drying wood fiber filler; mixing it with plastic to form a mixture; feeding the mixture into an extruder; introducing and mixing a blowing agent; subject the mixture to high shear forces and extruding the mixture to produce a plastic/wood fiber composite foamed structure. The filler has a degradation temperature and an active volatization temperature. During the pre-drying step the temperature is maintained below the degradation temperature. During the mixing step the mixing temperature is maintained below the active volatilizing temperature. During the introducing and mixing step a blowing agent is introduced into the plastic/wood fiber mixture and is mixed therewith to produce a plastic/wood fiber/gas mixture. During the subjecting step the plastic/wood fiber/gas mixture is subjected to high shear forces in the presence of high pressures and the temperature is maintained below an active volatilizing temperature.
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申请公布号 |
US2002165289(A1) |
申请公布日期 |
2002.11.07 |
申请号 |
US20010005365 |
申请日期 |
2001.12.07 |
申请人 |
PARK CHUL B.;RIZVI GHAUS M.;ZHANG HAIOU |
发明人 |
PARK CHUL B.;RIZVI GHAUS M.;ZHANG HAIOU |
分类号 |
B27N1/00;B27N3/00;B27N3/28;B29C44/12;B29C47/00;B29C47/10;B29C47/50;C08J9/00;(IPC1-7):C08J9/00 |
主分类号 |
B27N1/00 |
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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