发明名称 |
DEVICE AND PROCESS FOR CALIBRATING TUBULAR EXTRUDATES |
摘要 |
The present invention relates to a calibration device for use in a process of making a tubular article comprising a housing and a calibration sleeve providing a vertical pass-way for an extruded tubular extrudate, the housing comprising a bore, an upper opening with an upper seal and a lower opening with a lower seal; a vacuum channel connecting the bore to a vacuum source; a liquid channel for receiving a flow of liquid and connecting to a reservoir on top of the housing; and an adjustment device for controlling the liquid level in the reservoir; and the calibration sleeve comprising a body with multiple apertures and an inlet flange; the calibration sleeve removably positioned in the bore and contacting the housing via the upper and lower seals. This calibration device enables making a tubular article in a very flexible way, specifically on small scale in the laboratory; and can be operated in free or contact calibration mode, both with either dry or wet operation. The invention further relates to an extrusion system for making tubular articles from a polymer composition comprising such calibration device, and to a process applying such device or system. |
申请公布号 |
EP2750859(A2) |
申请公布日期 |
2014.07.09 |
申请号 |
EP20120756150 |
申请日期 |
2012.08.29 |
申请人 |
DSM IP ASSETS B.V. |
发明人 |
GROSS, HEINZ;QUAEDFLIEG, MATHEUS PIETER;RIJKS, LEONARDUS WILHELMUS GUILLAUME |
分类号 |
B29C47/90;B29C47/88;B29C47/92;B29C47/94 |
主分类号 |
B29C47/90 |
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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