发明名称 |
Apparatus and method for producing kink resistant tubing |
摘要 |
Apparatus for producing flexible kink resistant tubing having one or more non-reinforced section(s) and one or more spirally-reinforced section(s). The apparatus includes a rotatable member having an extrusion passgeway for extruding a second thermoplastic material in a filament within a first thermoplastic material to form a reinforcing filament in tubing formed by the first thermoplastic material. The rotatable member is rotated at a predetermined velocity to form the reinforcing filament in a spiral or helical pattern in the wall of the tubing. A diverter valve is provided for selectively providing the second thermoplastic material so that filament reinforced and non-reinforced longitudinal sections of tubing may be formed without interruption. A method of producing such kink resistant tubing is also disclosed.
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申请公布号 |
US5059375(A) |
申请公布日期 |
1991.10.22 |
申请号 |
US19890435558 |
申请日期 |
1989.11.13 |
申请人 |
MINNESOTA MINING & MANUFACTURING COMPANY |
发明人 |
LINDSAY, ERIN J. |
分类号 |
B29C47/02;B29C47/06;B29C47/24;B29C47/58;B29C69/00 |
主分类号 |
B29C47/02 |
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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