发明名称 |
ROTARY NEEDLING PROCESS FOR MAKING NEEDLED FIBROUS STRUCTURES |
摘要 |
<p>The invention relates to rotary needling processes in which a multitude of felting needles are repeatedly driven into a fibrous structure disposed on a surface of a needle penetrable support as the support is rotated about an axis of rotation. The process according to the invention comprises the steps of removably fixing a needle penetrable sheet to a rotary needling support, the rotary needling support defining a face disposed beneath a multitude of felting needles and having a needle penetrable area, the needle penetrable sheet covering the face and being fixed to the rotary needling support outside the face; rotating the needle penetrable sheet about an axis of rotation; depositing at least a first fibrous layer on the needle penetrable sheet; cohering the first fibrous layer and the needle penetrable sheet by repeatedly driving the multitude of felting needles into the first fibrous layer and the needle penetrable sheet; and, removing the first fibrous layer and the needle penetrable sheet from the rotary needling support subsequent to the first fibrous layer and the needle penetrable sheet being cohered. According to a further aspect of the invention, a rotary needling support for use in the process is also provided. <IMAGE></p> |
申请公布号 |
HK1014998(A1) |
申请公布日期 |
2003.01.17 |
申请号 |
HK19980119209 |
申请日期 |
1998.12.30 |
申请人 |
THE B.F. GOODRICH COMPANY |
发明人 |
LINCK, JOHN S.;MORRIS, EDWARD LEE JR.;PUM, HANNES |
分类号 |
D04H18/00;(IPC1-7):D04H |
主分类号 |
D04H18/00 |
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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