发明名称 |
Extrusion apparatus and systems |
摘要 |
Systems are disclosed for forming an extrudate. The systems include an extrusion head assembly having at least a first inner bore and a second outer bore, a coagulant solution supply and a polymeric casting solution supply. The coagulant supply provides coagulant to the inner bore of the extrusion head assembly, and the polymeric casting solution supply provides a casting solution to the outer bore. Using this system, the coagulant and polymeric solution are coextruded to form an extrudate having a desired configuration. The present invention further includes a rapid action valve controlling at least one of the coagulant or polymer supplies.
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申请公布号 |
US5232712(A) |
申请公布日期 |
1993.08.03 |
申请号 |
US19910722851 |
申请日期 |
1991.06.28 |
申请人 |
BROWN UNIVERSITY RESEARCH FOUNDATION |
发明人 |
MILLS, JOHN F.;WARNER, NICHOLAS F. |
分类号 |
A61J3/07;B29C47/06;B29C47/54;B29C47/92 |
主分类号 |
A61J3/07 |
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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