Titre : |
Keeping an eye on extrusion : Measurement of diameter, wall thickness, eccentricity and sagging during production |
Type de document : |
texte imprimé |
Auteurs : |
Harry Prunk, Auteur |
Année de publication : |
2017 |
Article en page(s) : |
p. 44-47 |
Langues : |
Anglais (eng) |
Catégories : |
Matières plastiques -- Extrusion Mesure Mesure -- Instruments Tubes
|
Index. décimale : |
668.4 Plastiques, vinyles |
Résumé : |
Online measuring devices with connected control are nowadays a standard in extrusion lines for online quality control, process stability and cost reduction. The article provides an overview on conventional as well as innovative measurement technologies and discusses their advantages and limits regarding their use in extrusion lines. |
Note de contenu : |
- Measuring the diameter
- Additional measurement of wall thickness and eccentricity
- Measurement of large plastic tubes
- FIGURES : 1. Scanning method with rotating mirror : the time during which the sensor signal is shadowed determines the diameter - 3. Projection method by using optics with CCD line sensor - 3. Diffraction analysis of the CCD line sensor signal : the method does not need optics or moving parts - 4. X-ray measuring system in a tube extrusion line - 5. Measuring principle on the basis of millimeter waves technology : from the run time difference of the reflected signals diameter, wall thickness and sagging can be determined - 6. For large plastic tubes : Measuring system for tubes up to 3200 mm outer diameter on the basis of the millimeter waves technology |
En ligne : |
https://drive.google.com/file/d/1mJBDQkjyhIz2P9UCGL3rB-jsON3uvrZ1/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28482 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 4 (04/2017) . - p. 44-47