Method for operating extrusion plants for extruding thermoplastics
A technology for thermoplastics and extrusion devices, applied in the field of extrusion devices for extruding thermoplastics, can solve problems such as thickness fluctuations of melts, and achieve the effect of simple configuration
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[0032] According to FIG. 1 , a conventional wide-slit nozzle 1 has a nozzle body 2 which can be heated by a conventional heating device 3 in order to produce extruded plastic material from a nozzle gap 4 in an extrusion device.
[0033] Here, the nozzle body 2 is subdivided, in particular in an outlet region 5 and a nozzle channel 10 , into lip elements 6 , 7 , wherein the lip parts 6 , 7 can be designed as rigid and / or flexible lips. Shaped elements 6,7.
[0034] Here, these lip elements 6, 7 or only one lip element 6 or 7 have some adjustment devices not shown in detail here, such as "fast-gap" adjustment devices or similar adjustment devices, so that automatic The nozzle gap is adjusted mechanically or mechanically with respect to the thickness of the nozzle gap. The adjusting device is used to quickly adjust the thickness of the outflow region of the nozzle element.
[0035] A disadvantage of conventional wide-slit nozzles is that the actual influence on the thickness of...
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Abstract
Description
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Application Information
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